/* roulang page: index */
:root {
            --el-bg: #0F1728;
            --el-bg-2: #131F36;
            --el-bg-3: #1A2A47;
            --el-card: rgba(255, 255, 255, .045);
            --el-card-solid: rgba(24, 39, 70, .84);
            --el-border: rgba(255, 255, 255, .12);
            --el-border-hover: rgba(93, 150, 255, .35);
            --el-blue: #3E7BFA;
            --el-accent: #34D9D0;
            --el-text: #EAF1FF;
            --el-subtext: #AEBFDE;
            --el-muted: #90A7CE;
            --el-gold: #F6B44B;
            --el-success: #3FCB79;
            --el-radius-lg: 24px;
            --el-radius-md: 16px;
            --el-radius-sm: 12px;
            --el-radius-pill: 999px;
            --el-shadow: 0 24px 60px rgba(8, 16, 40, .35);
            --el-space: 96px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
            background:
                radial-gradient(circle at 85% 4%, rgba(62, 123, 250, .16), transparent 32rem),
                radial-gradient(circle at 10% 92%, rgba(52, 217, 208, .08), transparent 28rem),
                var(--el-bg);
            color: var(--el-text);
            font-size: 17px;
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        .grid-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }

        section[id] {
            scroll-margin-top: 90px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s, opacity .25s, border-color .25s, box-shadow .25s;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: transparent;
        }

        input:focus-visible,
        button:focus-visible,
        a:focus-visible,
        textarea:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--el-blue);
            outline-offset: 3px;
            border-radius: 6px;
        }

        ::selection {
            background: rgba(62, 123, 250, .4);
            color: white;
        }

        .container-fluid {
            padding: 0;
        }

        .section {
            padding: var(--el-space) 0;
        }

        .section-soft {
            background: rgba(19, 31, 54, .35);
            border-top: 1px solid rgba(255, 255, 255, .06);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .section-head {
            max-width: 860px;
            margin-bottom: 48px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            letter-spacing: 1px;
            color: var(--el-accent);
            background: rgba(52, 217, 208, .08);
            padding: 7px 16px;
            border-radius: var(--el-radius-pill);
            border: 1px solid rgba(52, 217, 208, .18);
            margin-bottom: 18px;
            font-weight: 600;
        }

        .section-head h2 {
            font-size: clamp(28px, 3.4vw, 40px);
            font-weight: 600;
            line-height: 1.35;
            letter-spacing: -.02em;
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--el-subtext);
            font-size: 16px;
            max-width: 68ch;
            line-height: 1.8;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            min-height: 46px;
            padding: 12px 24px;
            border-radius: var(--el-radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.3;
            transition: transform .25s, box-shadow .25s, border-color .25s, background .25s, color .25s;
            border: 1px solid transparent;
            letter-spacing: .01em;
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, var(--el-blue), var(--el-accent));
            border-color: rgba(255, 255, 255, .35);
            box-shadow: 0 10px 32px rgba(62, 123, 250, .32), 0 0 0 1px rgba(255, 255, 255, .08) inset;
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            transform: translateY(-2px);
            box-shadow: 0 18px 44px rgba(62, 123, 250, .42), 0 0 0 1px rgba(255, 255, 255, .14) inset;
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 8px 20px rgba(62, 123, 250, .28);
        }

        .btn-ghost {
            color: var(--el-text);
            background: rgba(255, 255, 255, .05);
            border-color: rgba(255, 255, 255, .15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .btn-ghost:hover {
            border-color: rgba(93, 150, 255, .5);
            background: rgba(255, 255, 255, .08);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-action {
            min-height: 48px;
            padding: 11px 20px;
            border-radius: var(--el-radius-pill);
            border: 1px solid rgba(255, 255, 255, .14);
            background: rgba(255, 255, 255, .05);
            color: var(--el-text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            transition: .25s;
        }

        .btn-action i {
            color: var(--el-muted);
            transition: .25s;
        }

        .btn-action:hover {
            border-color: rgba(62, 123, 250, .48);
            background: rgba(62, 123, 250, .12);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-action.active {
            color: #fff;
            border-color: rgba(246, 180, 75, .48);
            background: rgba(246, 180, 75, .12);
        }

        .btn-action.active i {
            color: var(--el-gold);
        }

        .small-btn {
            min-height: 36px;
            padding: 6px 15px;
            font-size: 14px;
            border-radius: var(--el-radius-sm);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border-radius: var(--el-radius-pill);
            padding: 5px 13px;
            font-size: 13px;
            background: rgba(62, 123, 250, .1);
            color: #afc4ff;
            border: 1px solid rgba(62, 123, 250, .2);
        }

        .tag-cyan {
            background: rgba(52, 217, 208, .1);
            color: #7ce8e1;
            border-color: rgba(52, 217, 208, .2);
        }

        .icon-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--el-gold);
            display: inline-block;
        }

        /* Header Navigation */
        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: background .3s, box-shadow .3s, backdrop-filter .3s, border-color .3s;
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            position: fixed;
            background: rgba(15, 23, 40, .92);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .09);
            box-shadow: 0 12px 40px rgba(8, 16, 40, .25);
        }

        .navbar {
            display: flex;
            align-items: center;
            gap: 22px;
            min-height: 78px;
            flex-wrap: wrap;
            position: relative;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -.02em;
            color: #fff;
        }

        .brand-mark {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--el-blue), var(--el-accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            letter-spacing: 0;
            font-weight: 700;
            box-shadow: 0 8px 22px rgba(62, 123, 250, .4), 0 0 0 1px rgba(255, 255, 255, .16) inset;
        }

        .brand-name {
            line-height: 1.2;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            min-height: 40px;
            padding: 8px 14px;
            border-radius: var(--el-radius-sm);
            font-size: 15px;
            color: var(--el-subtext);
            font-weight: 500;
            transition: .25s;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(62, 123, 250, .14);
            box-shadow: inset 0 0 0 1px rgba(62, 123, 250, .25);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-left: auto;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--el-radius-pill);
            padding: 3px 6px 3px 16px;
            min-height: 42px;
            transition: .25s;
            width: 216px;
        }

        .header-search i {
            color: var(--el-muted);
            font-size: 14px;
            margin-right: 4px;
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--el-text);
            font-size: 14px;
            width: 100%;
            line-height: 1.4;
        }

        .header-search input::placeholder {
            color: var(--el-muted);
        }

        .header-search:focus-within {
            border-color: rgba(62, 123, 250, .55);
            background: rgba(62, 123, 250, .1);
            box-shadow: 0 0 0 4px rgba(62, 123, 250, .12);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 12px;
            color: #fff;
            background: rgba(255, 255, 255, .05);
            font-size: 18px;
            line-height: 1;
            transition: .25s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .1);
        }

        .nav-check {
            display: none;
        }

        /* Hero */
        .hero {
            position: relative;
            background-color: var(--el-bg-2);
            min-height: 100vh;
            overflow: hidden;
            display: flex;
            align-items: stretch;
        }

        .hero-bg-mask {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(15, 23, 40, .84), rgba(15, 23, 40, .66), rgba(15, 23, 40, .44), rgba(15, 23, 40, .8));
            z-index: 1;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
            will-change: transform;
        }

        .hero-inner {
            position: relative;
            z-index: 5;
            align-items: center;
            min-height: 100vh;
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 128px 28px 92px;
            gap: 40px;
        }

        .hero-hero {
            position: relative;
            z-index: 5;
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 128px 28px 80px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 52px;
            flex-wrap: wrap;
        }

        .hero-content {
            flex: 1 1 580px;
            max-width: 670px;
            z-index: 6;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .15);
            padding: 8px 18px;
            border-radius: var(--el-radius-pill);
            color: var(--el-text);
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            margin-bottom: 28px;
        }

        .hero-badge i {
            color: var(--el-accent);
        }

        .hero h1 {
            font-size: clamp(34px, 4.8vw, 61px);
            line-height: 1.22;
            font-weight: 700;
            letter-spacing: -.03em;
            margin-bottom: 24px;
            color: #fff;
            max-width: 13em;
        }

        .hero-sub {
            font-size: 18px;
            line-height: 1.9;
            color: var(--el-subtext);
            max-width: 58ch;
            margin-bottom: 28px;
        }

        .hero-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .hero-chip {
            font-size: 13px;
            color: #dbe9ff;
            border: 1px solid rgba(255, 255, 255, .12);
            background: rgba(255, 255, 255, .04);
            border-radius: var(--el-radius-pill);
            padding: 6px 13px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-visual {
            flex: 0 0 420px;
            position: relative;
            display: none;
        }

        .hero-card-wrap {
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .16);
            backdrop-filter: blur(22px) saturate(140%);
            -webkit-backdrop-filter: blur(22px) saturate(140%);
            border-radius: 28px;
            box-shadow: var(--el-shadow), 0 0 0 1px rgba(255, 255, 255, .08) inset;
            padding: 14px;
        }

        .hero-card-wrap img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: 21px;
            background: var(--el-bg-3);
        }

        .hero-card-body {
            padding: 18px 12px 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .hero-card-body strong {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
        }

        .hero-card-body span {
            display: block;
            color: var(--el-muted);
            font-size: 13px;
        }

        .hero-card-link {
            min-height: 38px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--el-accent);
            font-size: 14px;
            border: 1px solid rgba(52, 217, 208, .25);
            background: rgba(52, 217, 208, .08);
            padding: 0 14px;
            border-radius: var(--el-radius-pill);
        }

        .hero-card-link:hover {
            background: rgba(52, 217, 208, .16);
            color: #fff;
        }

        /* Catalog section */
        .catalog-stack {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .catalog-row {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--el-card);
            border: 1px solid var(--el-border);
            border-radius: var(--el-radius-md);
            padding: 18px 20px;
            overflow: hidden;
            transition: transform .28s, box-shadow .28s, border-color .28s, background .28s;
            min-height: 132px;
        }

        .catalog-row:hover {
            background: rgba(255, 255, 255, .075);
            border-color: rgba(93, 150, 255, .3);
            transform: translateY(-3px);
            box-shadow: 0 14px 38px rgba(8, 16, 40, .3), 0 0 0 1px rgba(93, 150, 255, .1);
        }

        .catalog-num {
            flex: 0 0 74px;
            font-size: 48px;
            font-weight: 700;
            line-height: 1;
            background: linear-gradient(145deg, var(--el-blue), var(--el-accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            opacity: .7;
            text-align: center;
        }

        .catalog-cover {
            flex: 0 0 152px;
            height: 96px;
            border-radius: 14px;
            overflow: hidden;
            position: relative;
            background: var(--el-bg-3);
            border: 1px solid rgba(255, 255, 255, .1);
        }

        .catalog-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s;
        }

        .catalog-row:hover .catalog-cover img {
            transform: scale(1.04);
        }

        .catalog-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 7px;
            min-width: 220px;
        }

        .catalog-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
        }

        .catalog-info p {
            color: var(--el-subtext);
            font-size: 14px;
            line-height: 1.75;
            max-width: 62ch;
            margin: 0;
        }

        .catalog-action {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--el-muted);
            font-size: 14px;
            font-weight: 500;
            min-height: 42px;
            padding: 0 15px;
            border-radius: var(--el-radius-pill);
            border: 1px solid rgba(255, 255, 255, .12);
            transition: .25s;
        }

        .catalog-row:hover .catalog-action {
            color: #fff;
            border-color: rgba(62, 123, 250, .45);
            background: rgba(62, 123, 250, .12);
        }

        .catalog-action i {
            transition: transform .25s;
        }

        .catalog-row:hover .catalog-action i {
            transform: translateX(3px);
        }

        /* Highlight Spot */
        .spot-block {
            background: var(--el-card);
            border: 1px solid var(--el-border);
            border-radius: var(--el-radius-lg);
            overflow: hidden;
            margin-bottom: 26px;
            transition: border-color .25s, box-shadow .25s;
        }

        .spot-block:hover {
            border-color: rgba(93, 150, 255, .2);
            box-shadow: 0 18px 48px rgba(8, 16, 40, .28);
        }

        .spot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }

        .spot-grid.reversed .spot-grid-item:first-child {
            order: 2;
        }

        .spot-visual {
            position: relative;
            min-height: 320px;
            background: var(--el-bg-3);
        }

        .spot-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .spot-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 23, 40, .55), transparent);
        }

        .spot-visual .spot-img-tone {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: flex-end;
            padding: 18px;
            z-index: 2;
            color: #fff;
            font-size: 14px;
            background: linear-gradient(0deg, rgba(15, 23, 40, .6), transparent 45%);
        }

        .spot-body {
            padding: clamp(24px, 4vw, 52px);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            justify-content: center;
            color: var(--el-subtext);
            gap: 14px;
            background: rgba(22, 35, 60, .5);
        }

        .spot-body h3 {
            color: #fff;
            font-size: clamp(22px, 2.6vw, 32px);
            line-height: 1.4;
            font-weight: 600;
            max-width: 18ch;
        }

        .spot-body p {
            line-height: 1.8;
            margin: 0;
            max-width: 52ch;
        }

        .spot-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 2px;
        }

        /* User Scene Cards */
        .scene-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin: 0;
        }

        .scene-card {
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .12);
            padding: 31px 28px;
            border-radius: var(--el-radius-lg);
            transition: transform .28s, border-color .28s, background .28s;
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .scene-card:hover {
            transform: translateY(-5px);
            border-color: rgba(93, 150, 255, .32);
            background: rgba(255, 255, 255, .07);
        }

        .scene-card-icon {
            width: 54px;
            height: 54px;
            border-radius: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            color: var(--el-accent);
            background: rgba(52, 217, 208, .12);
            border: 1px solid rgba(52, 217, 208, .2);
        }

        .scene-card-icon.blue {
            color: #9db9ff;
            background: rgba(62, 123, 250, .12);
            border-color: rgba(62, 123, 250, .2);
        }

        .scene-card-icon.gold {
            color: var(--el-gold);
            background: rgba(246, 180, 75, .12);
            border-color: rgba(246, 180, 75, .2);
        }

        .scene-card h3 {
            font-size: 21px;
            color: #fff;
            font-weight: 600;
        }

        .scene-card p {
            color: var(--el-subtext);
            font-size: 15px;
            line-height: 1.8;
        }

        .scene-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--el-accent);
            margin-top: 8px;
            font-weight: 500;
            font-size: 14px;
        }

        /* News CMS Region */
        .cms-news-region {
            max-width: 1140px;
            margin: 0 auto;
        }

        .news-list {
            list-style: none;
            margin: 0;
        }

        .news-item {
            background: var(--el-card);
            border: 1px solid var(--el-border);
            border-radius: var(--el-radius-md);
            padding: 28px 28px;
            transition: border-color .25s, background .25s, transform .25s;
            margin-bottom: 15px;
        }

        .news-item:hover {
            border-color: rgba(93, 150, 255, .35);
            background: rgba(255, 255, 255, .07);
            transform: translateY(-2px);
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .news-meta time {
            color: var(--el-muted);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .news-item h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            margin: 0 0 10px;
        }

        .news-item h3 a {
            color: #fff;
        }

        .news-item h3 a:hover {
            color: #bcd3ff;
        }

        .news-item .news-desc {
            color: var(--el-subtext);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 15px;
            max-width: 70ch;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--el-accent);
            font-size: 14px;
            font-weight: 600;
        }

        .news-link i {
            transition: transform .25s;
        }

        .news-link:hover i {
            transform: translateX(4px);
        }

        .news-empty {
            border: 1px dashed rgba(255, 255, 255, .2);
            border-radius: var(--el-radius-md);
            background: rgba(255, 255, 255, .025);
            padding: 50px 28px;
            text-align: center;
            color: var(--el-muted);
            font-size: 15px;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--el-radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: .25s;
        }

        .faq-item:hover {
            border-color: rgba(93, 150, 255, .22);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 21px 24px;
            font-size: 17px;
            color: #fff;
            font-weight: 600;
            cursor: pointer;
            line-height: 1.5;
            list-style: none;
        }

        .faq-question::-webkit-details-marker {
            display: none;
        }

        .faq-question::marker {
            content: "";
        }

        .faq-icon {
            position: relative;
            width: 26px;
            height: 26px;
            flex: 0 0 26px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .24);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform .3s, border-color .3s, background .3s;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            width: 12px;
            height: 2px;
            background: var(--el-subtext);
            border-radius: 2px;
            transition: background .3s, transform .3s;
        }

        .faq-icon::after {
            transform: rotate(90deg);
        }

        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            border-color: rgba(52, 217, 208, .5);
        }

        .faq-item[open] .faq-icon::before,
        .faq-item[open] .faq-icon::after {
            background: var(--el-accent);
        }

        .faq-answer {
            padding: 0 24px 24px;
            color: var(--el-subtext);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid rgba(255, 255, 255, .05);
        }

        .faq-answer p {
            padding-top: 17px;
            margin: 0;
            max-width: 68ch;
        }

        /* CTA / Subscribe */
        .cta-area {
            position: relative;
            background-color: var(--el-bg-2);
            overflow: hidden;
        }

        .cta-area::before,
        .cta-area::after {
            content: "";
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            filter: blur(120px);
            z-index: 0;
            pointer-events: none;
        }

        .cta-area::before {
            background: rgba(62, 123, 250, .18);
            top: -150px;
            right: -80px;
        }

        .cta-area::after {
            background: rgba(52, 217, 208, .1);
            left: -60px;
            bottom: -100px;
        }

        .cta-wrap {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 28px;
        }

        .cta-panel {
            background: var(--el-card-solid);
            border: 1px solid rgba(255, 255, 255, .13);
            border-radius: var(--el-radius-lg);
            padding: clamp(24px, 4vw, 46px);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--el-shadow);
        }

        .cta-panel h3 {
            font-size: 24px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-panel p {
            color: var(--el-subtext);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 42ch;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .form-status {
            display: flex;
            align-items: center;
            gap: 9px;
            min-height: 42px;
            margin-top: 16px;
            color: var(--el-success);
            background: rgba(63, 203, 121, .1);
            border: 1px solid rgba(63, 203, 121, .25);
            border-radius: var(--el-radius-sm);
            padding: 8px 14px;
            font-size: 14px;
            overflow: hidden;
            max-height: 0;
            opacity: 0;
            margin: 0;
            padding: 0 14px;
            transition: .35s;
        }

        .form-status.show {
            max-height: 60px;
            padding: 9px 14px;
            margin-top: 16px;
            opacity: 1;
        }

        .subscription-form {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 12px;
        }

        .subscription-form .email-input {
            flex: 1 1 250px;
            min-height: 48px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: var(--el-radius-sm);
            padding: 0 18px;
            color: var(--el-text);
            outline: none;
            transition: .25s;
        }

        .subscription-form .email-input::placeholder {
            color: var(--el-muted);
        }

        .subscription-form .email-input:focus {
            border-color: rgba(62, 123, 250, .75);
            box-shadow: 0 0 0 4px rgba(62, 123, 250, .14);
            background: rgba(255, 255, 255, .1);
        }

        /* Footer */
        .site-footer {
            background: #0B121F;
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding: 66px 0 30px;
            position: relative;
            overflow: hidden;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(62, 123, 250, .5), transparent);
        }

        .foot-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 48px;
        }

        .foot-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .foot-brand .brand-mark {
            width: 40px;
            height: 40px;
            border-radius: 13px;
            font-size: 13px;
        }

        .foot-grid h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .foot-grid ul li + li {
            margin-top: 9px;
        }

        .foot-grid ul a {
            color: var(--el-muted);
            font-size: 14px;
        }

        .foot-grid ul a:hover {
            color: var(--el-accent);
        }

        .foot-desc {
            font-size: 13px;
            color: var(--el-muted);
            line-height: 1.8;
            max-width: 35ch;
        }

        .foot-note {
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding-top: 24px;
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            color: var(--el-muted);
            font-size: 13px;
            line-height: 1.7;
        }

        .foot-note a {
            color: var(--el-muted);
        }

        .foot-note a:hover {
            color: #fff;
        }

        .sr-only {
            position: absolute !important;
            width: 1px;
            height: 1px;
            margin: -1px;
            padding: 0;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Responsive */
        @media screen and (max-width: 1200px) {
            .hero-hero {
                gap: 34px;
            }

            .hero-visual {
                flex-basis: 360px;
                display: none;
            }

            .catalog-row {
                padding: 16px;
            }

            .catalog-num {
                flex-basis: 58px;
                font-size: 38px;
            }

            .catalog-cover {
                flex-basis: 128px;
            }
        }

        @media screen and (max-width: 1023px) {
            :root {
                --el-space: 68px;
            }

            .nav-actions {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .nav-links {
                position: absolute;
                top: calc(100% + 12px);
                left: -12px;
                right: -12px;
                background: rgba(15, 23, 40, .98);
                border: 1px solid rgba(255, 255, 255, .12);
                border-radius: var(--el-radius-md);
                padding: 16px;
                display: flex;
                flex-direction: column;
                align-items: stretch;
                opacity: 0;
                transform: translateY(-10px);
                pointer-events: none;
                transition: .25s;
                box-shadow: var(--el-shadow);
                z-index: 60;
            }

            .nav-links a {
                justify-content: flex-start;
                min-height: 44px;
            }

            .nav-check:checked ~ .nav-links {
                opacity: 1;
                transform: translateY(0);
                pointer-events: auto;
            }

            .nav-check:focus-visible ~ label {
                outline: 2px solid var(--el-blue);
            }

            .spot-grid,
            .spot-grid.reversed {
                grid-template-columns: 1fr;
            }

            .spot-grid.reversed .spot-grid-item:first-child {
                order: 0;
            }

            .spot-visual {
                min-height: 220px;
            }

            .spot-visual img {
                min-height: 220px;
            }

            .spot-body {
                padding: 26px 24px;
            }

            .scene-list {
                grid-template-columns: 1fr 1fr;
            }

            .cta-wrap {
                grid-template-columns: 1fr;
            }

            .foot-grid {
                grid-template-columns: 1fr 1fr;
            }

            .hero-hero {
                padding-left: 22px;
                padding-right: 22px;
            }

            .hero-card-wrap {
                display: none;
            }
        }

        @media screen and (max-width: 767px) {
            .grid-container {
                padding: 0 18px;
            }

            body {
                font-size: 16px;
            }

            .section {
                padding: 54px 0;
            }

            .navbar {
                min-height: 68px;
            }

            .brand {
                font-size: 19px;
            }

            .brand-mark {
                width: 38px;
                height: 38px;
            }

            .hero-inner {
                padding: 105px 18px 70px;
            }

            .hero h1 {
                font-size: 34px;
                line-height: 1.25;
            }

            .hero-sub {
                font-size: 16px;
            }

            .catalog-row {
                flex-wrap: wrap;
                padding: 18px 16px;
                gap: 14px;
            }

            .catalog-num {
                flex: 0 0 48px;
                font-size: 34px;
            }

            .catalog-cover {
                flex-basis: 100%;
                height: 150px;
            }

            .catalog-cover img {
                height: 150px;
            }

            .catalog-info h3 {
                font-size: 19px;
            }

            .catalog-action {
                width: 100%;
                justify-content: center;
            }

            .scene-list {
                grid-template-columns: 1fr;
            }

            .news-item {
                padding: 22px 18px;
            }

            .news-item h3 {
                font-size: 18px;
            }

            .foot-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                margin-bottom: 32px;
            }

            .foot-note {
                flex-direction: column;
            }

            .hero-chips {
                gap: 8px;
            }

            .btn {
                width: 100%;
            }

            .hero-actions .btn {
                width: auto;
                flex: 1;
            }

            .spot-visual {
                min-height: 174px;
            }

            .spot-visual img {
                min-height: 174px;
            }

            .faq-question {
                font-size: 15px;
            }
        }

        @media screen and (max-width: 380px) {
            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .catalog-cover,
            .catalog-cover img {
                height: 120px;
            }
        }

/* roulang page: category1 */
:root {
    --deep-bg: #0F1728;
    --night-bg: #131F36;
    --card-bg: rgba(255, 255, 255, .045);
    --primary-blue: #3E7BFA;
    --accent-cyan: #34D9D0;
    --info-blue: #90A7CE;
    --text-main: #EAF1FF;
    --text-sub: #AEBFDE;
    --warn-gold: #F6B44B;
    --success-green: #3FCB79;
    --border-glass: rgba(255, 255, 255, .12);
    --border-hover: rgba(93, 150, 255, .35);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --radius-pill: 999px;
    --shadow-soft: 0 20px 60px rgba(8, 16, 40, .35);
    --shadow-up: 0 28px 80px rgba(8, 20, 50, .45);
    --container: 1240px;
    --ease: cubic-bezier(.22, .72, .24, 1);
    --header-height: 76px;
}
* {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif;
    background: var(--deep-bg);
    color: var(--text-main);
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle at center, rgba(62, 123, 250, .18), transparent 70%);
    pointer-events: none;
    z-index: 0;
}
body::after {
    content: "";
    position: fixed;
    bottom: -160px;
    right: -100px;
    width: 640px;
    height: 640px;
    background: radial-gradient(circle at center, rgba(52, 217, 208, .10), transparent 70%);
    pointer-events: none;
    z-index: 0;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: var(--text-main);
    text-decoration: none;
    transition: color .25s var(--ease);
}
button,
input {
    font-family: inherit;
}
ul,
ol {
    margin: 0;
    padding: 0;
}
h1, h2, h3, h4, p {
    margin-top: 0;
}
h1, h2, h3, h4 {
    line-height: 1.3;
    letter-spacing: .01em;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.shell {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 22px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .3s var(--ease);
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), #2a9bd8 45%, var(--accent-cyan));
    color: #fff;
    border-color: rgba(255, 255, 255, .35);
    box-shadow: 0 8px 32px rgba(52, 217, 208, .28), inset 0 1px 0 rgba(255, 255, 255, .22);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 44px rgba(62, 123, 250, .42), 0 0 0 1px rgba(52, 217, 208, .2);
    color: #fff;
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 6px 20px rgba(52, 217, 208, .22);
}
.btn-ghost {
    background: rgba(255, 255, 255, .07);
    color: var(--text-main);
    border-color: var(--border-glass);
    backdrop-filter: blur(12px);
}
.btn-ghost:hover {
    border-color: rgba(120, 177, 255, .45);
    background: rgba(255, 255, 255, .12);
    color: #fff;
    transform: translateY(-2px);
}
.btn-warm {
    background: rgba(246, 180, 75, .13);
    color: #FFD58A;
    border-color: rgba(246, 180, 75, .35);
}
.btn-warm:hover {
    background: rgba(246, 180, 75, .24);
    border-color: rgba(246, 180, 75, .65);
    color: #FFE3AF;
}
.small-btn {
    min-height: 42px;
    padding: 0 16px;
    font-size: 14px;
}
.large-btn {
    min-height: 54px;
    padding: 0 32px;
    font-size: 16px;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99;
    height: var(--header-height);
    background: rgba(15, 23, 40, .32);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    transition: background .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
}
.site-header.scrolled {
    background: rgba(15, 23, 40, .92);
    box-shadow: 0 12px 40px rgba(5, 10, 24, .35);
    border-color: rgba(255, 255, 255, .10);
}
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
    gap: 28px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .02em;
}
.brand:hover {
    opacity: .88;
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
    color: #fff;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: -1px;
    box-shadow: 0 0 0 1px rgba(255, 255, 255, .25), 0 10px 28px rgba(52, 217, 208, .22);
}
.brand-name {
    color: #fff;
    white-space: nowrap;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-links a {
    display: flex;
    align-items: center;
    min-height: 40px;
    padding: 0 12px;
    color: var(--text-sub);
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .01em;
}
.nav-links a:hover {
    color: #fff;
    background: rgba(255, 255, 255, .08);
}
.nav-links a.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(62, 123, 250, .28), rgba(52, 217, 208, .15));
    border: 1px solid rgba(120, 177, 255, .3);
}
.nav-check,
.nav-toggle {
    display: none;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.header-search {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 200px;
    min-height: 42px;
    padding: 0 14px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: var(--radius-pill);
    color: var(--info-blue);
    transition: border-color .3s, background .3s, box-shadow .3s;
}
.header-search:focus-within {
    background: rgba(255, 255, 255, .10);
    border-color: rgba(120, 177, 255, .45);
    box-shadow: 0 0 0 3px rgba(62, 123, 250, .16);
}
.header-search i {
    font-size: 14px;
}
.header-search input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: 0;
    outline: 0;
    color: var(--text-main);
    font-size: 14px;
}
.header-search input::placeholder {
    color: rgba(174, 191, 222, .66);
}

.hero-category {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    min-height: 92vh;
    padding: calc(var(--header-height) + 50px) 0 60px;
    background:
        linear-gradient(90deg, rgba(9, 15, 30, .72), rgba(15, 23, 40, .62)),
        url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    overflow: hidden;
}
.hero-category::before {
    content: "";
    position: absolute;
    width: 640px;
    height: 640px;
    right: -120px;
    top: 10%;
    background: radial-gradient(circle, rgba(62, 123, 250, .35), transparent 65%);
    pointer-events: none;
}
.hero-category::after {
    content: "";
    position: absolute;
    inset: auto 0 0 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--deep-bg));
    pointer-events: none;
}
.hero-inner {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 60px;
}
.hero-copy {
    flex: 1 1 58%;
    position: relative;
    z-index: 2;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 32px;
    padding: 0 14px;
    border-radius: var(--radius-pill);
    background: rgba(52, 217, 208, .14);
    border: 1px solid rgba(52, 217, 208, .25);
    color: #aff5f2;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .02em;
    margin-bottom: 24px;
}
.hero-title {
    margin-bottom: 20px;
    font-size: clamp(38px, 5vw, 62px);
    line-height: 1.18;
    font-weight: 700;
    letter-spacing: -.012em;
    max-width: 11em;
}
.hero-sub {
    max-width: 62ch;
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-sub);
    margin-bottom: 36px;
}
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 38px;
}
.stat-item {
    min-width: 120px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .09);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}
.stat-num {
    display: block;
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}
.stat-label {
    display: block;
    font-size: 13px;
    color: var(--info-blue);
    margin-top: 4px;
}
.hero-visual {
    flex: 0 1 38%;
    position: relative;
    z-index: 2;
    max-width: 420px;
    margin-left: auto;
}
.hero-card-preview {
    padding: 20px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .16);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(20px) saturate(130%);
    -webkit-backdrop-filter: blur(20px) saturate(130%);
}
.hero-card-preview img {
    border-radius: 16px;
    aspect-ratio: 16/10;
    object-fit: cover;
    box-shadow: 0 16px 40px rgba(5, 10, 24, .45);
}
.preview-caption {
    padding: 12px 4px 2px;
    font-size: 14px;
    color: var(--text-sub);
}
.preview-caption strong {
    display: block;
    color: #fff;
    font-size: 16px;
    margin-bottom: 4px;
    font-weight: 600;
}

.section-block {
    padding: 94px 0;
    position: relative;
    z-index: 1;
}
.section-dark {
    background: rgba(8, 14, 27, .6);
    border-top: 1px solid rgba(255, 255, 255, .06);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 46px;
}
.kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: .08em;
    margin-bottom: 12px;
    text-transform: uppercase;
}
.section-title {
    font-size: clamp(28px, 3.4vw, 42px);
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
    letter-spacing: -.01em;
}
.section-desc {
    color: var(--text-sub);
    max-width: 68ch;
    font-size: 16px;
    line-height: 1.85;
    margin-top: 12px;
}

.module-index-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.module-index {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px 22px;
    border-radius: var(--radius-md);
    background: var(--card-bg);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
    transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.module-index:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: 0 18px 44px rgba(5, 12, 30, .35);
}
.module-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    font-size: 18px;
    font-weight: 700;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-blue), rgba(62, 123, 250, .5));
    border: 1px solid rgba(255, 255, 255, .2);
}
.module-index:nth-child(2) .module-num {
    background: linear-gradient(135deg, #415fbd, rgba(65, 95, 189, .5));
}
.module-index:nth-child(3) .module-num {
    background: linear-gradient(135deg, #2fa8b4, rgba(47, 168, 180, .5));
}
.module-index:nth-child(4) .module-num {
    background: linear-gradient(135deg, #7e6adb, rgba(126, 106, 219, .5));
}
.module-content {
    flex: 1;
    min-width: 0;
}
.module-content h3 {
    margin-bottom: 6px;
    font-size: 20px;
    font-weight: 600;
}
.module-content p {
    margin: 0;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.75;
}
.module-arrow {
    color: var(--info-blue);
    font-size: 16px;
    flex-shrink: 0;
    transition: transform .25s var(--ease), color .25s;
}
.module-index:hover .module-arrow {
    transform: translateX(4px);
    color: var(--accent-cyan);
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.scope-card {
    padding: 28px 24px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, .035);
    border: 1px solid rgba(255, 255, 255, .09);
    position: relative;
}
.scope-card i {
    display: inline-flex;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 18px;
    background: rgba(62, 123, 250, .12);
    border: 1px solid rgba(62, 123, 250, .24);
    color: #9cc2ff;
    margin-bottom: 18px;
}
.scope-card h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
}
.scope-card p {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.85;
    margin: 0 0 14px;
}
.scope-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .08);
    color: var(--info-blue);
    font-size: 12px;
    font-weight: 500;
}
.tag-blue {
    background: rgba(62, 123, 250, .13);
    border-color: rgba(62, 123, 250, .24);
    color: #b4d0ff;
}

.content-anchor {
    scroll-margin-top: 110px;
}
.feature-block {
    display: flex;
    align-items: center;
    gap: 48px;
    margin-bottom: 76px;
}
.feature-block:last-child {
    margin-bottom: 0;
}
.feature-reverse {
    flex-direction: row-reverse;
}
.feature-media {
    flex: 0 1 48%;
    position: relative;
}
.feature-media img {
    width: 100%;
    aspect-ratio: 16/11;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, .13);
    box-shadow: var(--shadow-soft);
}
.feature-media::after {
    content: "";
    position: absolute;
    inset: 18px -18px -18px 18px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(62, 123, 250, .10), rgba(52, 217, 208, .08));
    z-index: -1;
}
.feature-info {
    flex: 1 1 48%;
}
.feature-info .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 14px;
    letter-spacing: .04em;
}
.feature-info h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 14px;
    line-height: 1.35;
}
.feature-info > p {
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 20px;
}
.feature-points {
    list-style: none;
}
.feature-points li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 14px;
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.8;
}
.feature-points li i {
    width: 22px;
    height: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 4px;
    border-radius: 8px;
    background: rgba(52, 217, 208, .13);
    color: var(--accent-cyan);
    font-size: 12px;
}

.quick-table {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.quick-row {
    display: grid;
    grid-template-columns: 1.1fr 1.2fr 2fr;
    gap: 18px;
    align-items: center;
    padding: 17px 20px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .09);
    transition: border-color .25s, background .25s;
}
.quick-row:hover {
    border-color: rgba(120, 177, 255, .35);
    background: rgba(255, 255, 255, .06);
}
.quick-head {
    background: rgba(62, 123, 250, .08);
    border-color: rgba(62, 123, 250, .22);
    font-weight: 600;
    color: #b6d4ff;
}
.quick-name {
    font-weight: 600;
    font-size: 15px;
    color: #fff;
}
.quick-loc {
    color: var(--warn-gold);
    font-size: 14px;
}
.quick-desc {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.8;
}

.scenario-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.scenario-card {
    padding: 28px 24px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .10);
    backdrop-filter: blur(12px);
    transition: border-color .3s, transform .3s;
}
.scenario-card:hover {
    border-color: rgba(120, 177, 255, .45);
    transform: translateY(-4px);
}
.scenario-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(62, 123, 250, .18), rgba(52, 217, 208, .10));
    border: 1px solid rgba(120, 177, 255, .30);
    color: #cddbff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 22px;
}
.scenario-card h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
}
.scenario-card p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.85;
    margin-bottom: 16px;
}
.scenario-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.scenario-card li {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    font-size: 13px;
    color: var(--info-blue);
}
.scenario-card li i {
    color: var(--success-green);
    font-size: 12px;
    margin-top: 5px;
}

.related-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.related-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: rgba(255, 255, 255, .05);
    border: 1px solid var(--border-glass);
    transition: border-color .3s, transform .3s, box-shadow .3s;
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(120, 177, 255, .4);
    box-shadow: var(--shadow-up);
}
.related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform .6s var(--ease);
}
.related-card:hover img {
    transform: scale(1.04);
}
.related-body {
    padding: 24px 22px;
}
.related-body h3 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 10px;
}
.related-body p {
    color: var(--text-sub);
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.8;
}
.inline-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-cyan);
    font-size: 14px;
    font-weight: 600;
}
.inline-link:hover {
    color: #fff;
}

.faq-panel {
    max-width: 980px;
    margin: 0 auto;
}
.faq-row {
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, .10);
    background: rgba(255, 255, 255, .04);
    margin-bottom: 14px;
    overflow: hidden;
}
.faq-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    min-height: 58px;
}
.faq-head h3 {
    font-size: 17px;
    font-weight: 600;
    margin: 0;
    color: #fff;
    line-height: 1.5;
}
.faq-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    color: var(--info-blue);
    border: 1px solid rgba(255, 255, 255, .13);
    border-radius: 10px;
    transition: transform .3s var(--ease), color .3s, border-color .3s;
}
.faq-body {
    display: none;
    padding: 0 24px 22px;
    color: var(--text-sub);
    font-size: 15px;
    line-height: 1.9;
    border-top: 1px solid rgba(255, 255, 255, .06);
    padding-top: 16px;
    margin-top: -2px;
}

.cta-area {
    padding: 78px 0;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 70% 30%, rgba(62, 123, 250, .24), transparent 46%), radial-gradient(circle at 10% 90%, rgba(52, 217, 208, .12), transparent 42%);
    border-top: 1px solid rgba(255, 255, 255, .08);
}
.cta-box {
    background: rgba(20, 32, 58, .62);
    border: 1px solid rgba(120, 177, 255, .20);
    border-radius: 28px;
    padding: 54px 56px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    max-width: 1000px;
    margin: 0 auto;
}
.cta-box h2 {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 700;
    margin-bottom: 14px;
}
.cta-box p {
    color: var(--text-sub);
    font-size: 16px;
    max-width: 58ch;
    margin: 0 auto 30px;
    line-height: 1.8;
}
.cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}
.fav-note {
    margin-top: 18px;
    font-size: 13px;
    color: var(--info-blue);
}
.fav-note i {
    color: var(--warn-gold);
}

.site-footer {
    background: #0a1222;
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding: 60px 0 30px;
    position: relative;
    z-index: 1;
}
.site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(52, 217, 208, .5), rgba(62, 123, 250, .5), transparent);
}
.foot-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 40px;
    margin-bottom: 44px;
}
.foot-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.foot-brand .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 15px;
}
.foot-desc {
    color: var(--text-sub);
    font-size: 14px;
    line-height: 1.8;
    max-width: 40ch;
    margin: 0;
}
.site-footer h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
}
.site-footer ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.site-footer ul a {
    color: var(--text-sub);
    font-size: 14px;
}
.site-footer ul a:hover {
    color: #fff;
}
.foot-note {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    padding-top: 22px;
    font-size: 13px;
    color: rgba(174, 191, 222, .8);
}

@media (max-width: 1024px) {
    .shell {
        padding: 0 22px;
    }
    .hero-inner {
        gap: 36px;
    }
    .hero-visual {
        flex-basis: 36%;
        max-width: 360px;
    }
    .module-content h3 {
        font-size: 19px;
    }
    .scope-grid,
    .scenario-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-block {
        gap: 32px;
    }
    .related-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }
    .navbar {
        flex-wrap: wrap;
        padding: 0;
        gap: 0;
    }
    .brand {
        order: 1;
    }
    .nav-actions {
        order: 2;
        margin-left: auto;
    }
    .nav-toggle {
        order: 3;
        display: inline-flex;
        width: 44px;
        height: 44px;
        margin-left: 8px;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        color: #fff;
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .10);
        font-size: 18px;
        cursor: pointer;
    }
    .nav-links {
        order: 5;
        display: none;
        flex: 0 1 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        width: auto;
        margin-top: 14px;
        padding: 16px;
        border-radius: 16px;
        background: rgba(15, 23, 40, .96);
        border: 1px solid rgba(255, 255, 255, .10);
        box-shadow: 0 20px 50px rgba(3, 8, 20, .5);
    }
    .nav-links a {
        min-height: 48px;
        padding: 0 14px;
        justify-content: flex-start;
        border-radius: 12px;
        border: 1px solid transparent;
    }
    .nav-links a.active {
        border-color: rgba(120, 177, 255, .25);
    }
    .nav-check:checked ~ .nav-links {
        display: flex;
    }
    .header-search {
        min-width: 0;
        width: 42px;
        padding: 0 12px;
        border-color: transparent;
        background: rgba(255, 255, 255, .06);
    }
    .header-search input {
        display: none;
    }
    .header-search i {
        margin: 0 auto;
    }
    .small-btn:not(.btn-inline) {
        display: none;
    }
    .btn-inline {
        min-height: 40px;
        padding: 0 12px;
        font-size: 13px;
    }
    .hero-category {
        min-height: auto;
        padding: calc(var(--header-height) + 40px) 0 60px;
    }
    .hero-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 34px;
    }
    .hero-title {
        font-size: 38px;
    }
    .hero-visual {
        max-width: 100%;
        flex: 1 1 100%;
        width: 100%;
    }
    .hero-card-preview {
        display: block;
    }
    .scope-grid,
    .scenario-cards,
    .related-cards {
        grid-template-columns: 1fr;
    }
    .module-index {
        align-items: flex-start;
        flex-wrap: wrap;
        padding: 18px;
    }
    .module-arrow {
        display: none;
    }
    .feature-block {
        flex-direction: column;
        gap: 30px;
        margin-bottom: 60px;
    }
    .feature-reverse {
        flex-direction: column;
    }
    .feature-media,
    .feature-info {
        flex: 1 1 100%;
    }
    .quick-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px 14px;
    }
    .quick-desc {
        grid-column: 1 / -1;
        padding-top: 4px;
    }
    .section-block {
        padding: 70px 0;
    }
    .foot-grid {
        grid-template-columns: 1fr 1fr;
        gap: 34px;
    }
}

@media (max-width: 520px) {
    .shell {
        padding: 0 16px;
    }
    .brand-name {
        font-size: 16px;
    }
    .brand-mark {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        font-size: 13px;
    }
    .nav-actions {
        gap: 4px;
    }
    .btn-inline {
        padding: 0 10px;
    }
    .hero-copy {
        padding-top: 6px;
    }
    .hero-title {
        font-size: 32px;
    }
    .hero-sub {
        font-size: 15px;
    }
    .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
    .hero-card-preview {
        padding: 12px;
    }
    .section-head {
        margin-bottom: 30px;
    }
    .section-title {
        font-size: 26px;
    }
    .scope-grid {
        grid-template-columns: 1fr;
    }
    .scope-card,
    .scenario-card {
        padding: 22px 18px;
    }
    .cta-box {
        padding: 36px 18px;
        border-radius: 22px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .quick-row {
        grid-template-columns: 1fr;
    }
    .quick-desc {
        grid-column: auto;
    }
    .foot-grid {
        grid-template-columns: 1fr;
    }
    .foot-note {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* roulang page: article */
:root {
            --bg-deep: #0F1728;
            --bg-raise: #131F36;
            --glass-bg: rgba(255, 255, 255, .045);
            --glass-strong: rgba(255, 255, 255, .075);
            --blue: #3E7BFA;
            --cyan: #34D9D0;
            --cyan-blue: linear-gradient(135deg, #3E7BFA 0%, #29B8D2 55%, #34D9D0 100%);
            --text-main: #EAF1FF;
            --text-sub: #AEBFDE;
            --text-weak: #90A7CE;
            --text-line: rgba(255, 255, 255, .12);
            --danger-warn: #F6B44B;
            --success: #3FCB79;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 12px;
            --shadow-soft: 0 22px 55px rgba(8, 16, 40, .35);
            --container-w: 1240px;
            --header-h: 74px;
            --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
            --ease: cubic-bezier(.22, .61, .36, 1);
        }

        *,
        *:before,
        *:after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            background: var(--bg-deep);
            color: var(--text-main);
            font-family: var(--font-cn);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            left: -10vw;
            top: -10vw;
            width: 54vw;
            height: 54vw;
            background: radial-gradient(circle, rgba(62, 123, 250, .10) 0%, transparent 62%);
            pointer-events: none;
            z-index: 0;
        }
        body::after {
            content: "";
            position: fixed;
            right: -14vw;
            bottom: -10vw;
            width: 48vw;
            height: 48vw;
            background: radial-gradient(circle, rgba(52, 217, 208, .07) 0%, transparent 62%);
            pointer-events: none;
            z-index: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        button,
        input {
            font-family: inherit;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .grid-container {
            max-width: var(--container-w);
        }
        .section-pad {
            padding: 96px 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 46px;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .3s var(--ease);
            line-height: 1.3;
            background: transparent;
            color: var(--text-main);
            letter-spacing: .01em;
            white-space: nowrap;
        }
        .btn i {
            font-size: 15px;
        }
        .btn-primary {
            background: var(--cyan-blue);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fff;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .18), 0 10px 28px rgba(52, 217, 208, .16);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, .28), 0 16px 36px rgba(52, 217, 208, .28);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .05);
            border-color: var(--text-line);
            color: var(--text-main);
            backdrop-filter: blur(8px);
        }
        .btn-ghost:hover {
            border-color: rgba(147, 190, 255, .46);
            background: rgba(255, 255, 255, .09);
            color: #fff;
        }
        .btn-warn {
            border-color: rgba(246, 180, 75, .55);
            color: var(--danger-warn);
            background: rgba(246, 180, 75, .07);
        }
        .btn-warn:hover {
            background: rgba(246, 180, 75, .14);
            color: #FFD98E;
            border-color: rgba(255, 210, 130, .75);
        }
        .btn.loading,
        .btn:disabled {
            opacity: .65;
            cursor: not-allowed;
        }
        .small-btn {
            min-height: 40px;
            padding: 7px 14px;
            font-size: 13px;
        }
        .sr-only {
            position: absolute !important;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(1px, 1px, 1px, 1px);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            color: var(--text-main);
            backdrop-filter: blur(10px);
        }
        .badge i {
            color: var(--cyan);
            font-size: 12px;
        }
        .chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12.5px;
            line-height: 1.5;
            border-radius: 999px;
            background: rgba(62, 123, 250, .12);
            border: 1px solid rgba(62, 123, 250, .26);
            color: var(--text-sub);
        }

        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            width: 100%;
            z-index: 50;
            height: var(--header-h);
            background: rgba(12, 20, 36, .38);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .09);
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
        }
        .site-header.is-scrolled {
            position: fixed;
            background: rgba(15, 23, 40, .93);
            backdrop-filter: blur(23px) saturate(140%);
            -webkit-backdrop-filter: blur(23px) saturate(140%);
            box-shadow: 0 14px 38px rgba(4, 9, 24, .42);
            border-bottom-color: rgba(129, 163, 255, .18);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: var(--header-h);
            flex-wrap: wrap;
        }
        .navbar .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--text-main);
            font-size: 20px;
            font-weight: 600;
            letter-spacing: .5px;
        }
        .navbar .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--cyan-blue);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 8px 20px rgba(43, 177, 216, .16);
            border: 1px solid rgba(255, 255, 255, .14);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 3px;
            flex-wrap: wrap;
        }
        .nav-links a {
            position: relative;
            padding: 8px 16px;
            font-size: 15px;
            color: var(--text-sub);
            border-radius: 999px;
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
            line-height: 1.4;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .05);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(62, 123, 250, .16);
            border: 1px solid rgba(93, 150, 255, .3);
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: -2px;
            transform: translateX(-50%);
            width: 14px;
            height: 2px;
            border-radius: 2px;
            background: var(--cyan);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 0 12px;
            height: 40px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .11);
            background: rgba(255, 255, 255, .05);
            transition: border-color .25s, box-shadow .25s, background .25s;
        }
        .header-search i {
            color: var(--text-weak);
            font-size: 13px;
            pointer-events: none;
        }
        .header-search input {
            max-width: 126px;
            border: 0;
            outline: 0;
            background: transparent;
            color: var(--text-main);
            font-size: 13px;
            line-height: 1;
            padding: 0;
            box-shadow: none;
        }
        .header-search input::placeholder {
            color: var(--text-weak);
        }
        .header-search:focus-within,
        .header-search:has(input:focus) {
            border-color: rgba(93, 150, 255, .68);
            box-shadow: 0 0 0 3px rgba(62, 123, 250, .14);
            background: rgba(255, 255, 255, .085);
        }
        .nav-check,
        .nav-toggle {
            display: none;
        }

        .post-hero {
            position: relative;
            min-height: 60vh;
            display: flex;
            align-items: center;
            padding: 148px 0 70px;
            background:
                linear-gradient(180deg, rgba(15, 23, 40, .62) 0%, rgba(15, 23, 40, .84) 100%),
                url('/assets/images/backpic/back-2.webp') center 32% / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            overflow: hidden;
        }
        .post-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(800px 320px at 18% 0%, rgba(62, 123, 250, .14), transparent 68%),
                radial-gradient(780px 360px at 86% 100%, rgba(52, 217, 208, .08), transparent 68%);
            pointer-events: none;
        }
        .post-hero .hero-inner {
            position: relative;
            z-index: 2;
        }
        .post-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 7px;
            color: var(--text-weak);
            font-size: 13.5px;
            margin-bottom: 24px;
        }
        .post-breadcrumb a {
            transition: color .2s;
        }
        .post-breadcrumb a:hover {
            color: var(--cyan);
        }
        .post-breadcrumb i {
            font-size: 11px;
            opacity: .7;
        }
        .post-cate-row {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 18px;
        }
        .post-title {
            max-width: 940px;
            font-size: clamp(28px, 4.2vw, 46px);
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin: 0 0 18px;
            text-align: left;
        }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            margin: 20px 0 0;
            color: var(--text-sub);
            font-size: 14px;
        }
        .post-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .post-meta .meta-item i {
            color: var(--cyan);
            font-size: 13px;
            opacity: .78;
        }
        .meta-avatar {
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 12px;
            color: #fff;
            background: var(--cyan-blue);
            border: 1px solid rgba(255, 255, 255, .2);
        }

        .article-section {
            position: relative;
            z-index: 2;
            padding-top: 70px;
            padding-bottom: 30px;
        }
        .article-grid {
            align-items: flex-start;
            row-gap: 38px;
        }
        .article-panel {
            position: relative;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .11);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-soft);
            padding: clamp(22px, 4vw, 56px);
            overflow: hidden;
        }
        .article-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, rgba(52, 217, 208, .65), rgba(62, 123, 250, .65), transparent);
            pointer-events: none;
        }
        .article-panel .panel-feet {
            margin-top: 44px;
            padding-top: 28px;
            border-top: 1px dashed rgba(255, 255, 255, .1);
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .panel-feet .ft-text {
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-width: 0;
        }
        .panel-feet .ft-label {
            color: var(--text-weak);
            font-size: 13px;
            margin-bottom: -2px;
        }

        .article-body {
            color: #DDE8FA;
            font-size: 17px;
            line-height: 1.85;
            text-align: left;
            max-width: 100%;
        }
        .article-body p {
            margin: 0 0 1.45em;
            max-width: 68ch;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: #fff;
            line-height: 1.32;
            font-weight: 600;
            letter-spacing: -0.01em;
            text-align: left;
            margin: 2em 0 .9em;
        }
        .article-body h2 {
            font-size: 27px;
            padding-left: 16px;
            border-left: 4px solid var(--cyan);
            border-radius: 3px;
        }
        .article-body h3 {
            font-size: 22px;
        }
        .article-body h4 {
            font-size: 18px;
            color: var(--text-main);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em;
            padding-left: 1.45em;
        }
        .article-body li {
            margin-bottom: .5em;
        }
        .article-body li::marker {
            color: var(--cyan);
        }
        .article-body blockquote {
            margin: 1.8em 0;
            background: rgba(62, 123, 250, .09);
            border-left: 4px solid rgba(52, 217, 208, .8);
            padding: 18px 24px;
            border-radius: 0 14px 14px 0;
            color: #C6D8F5;
        }
        .article-body blockquote p {
            margin-bottom: .3em;
        }
        .article-body a {
            color: var(--cyan);
            text-decoration: underline;
            text-underline-offset: 5px;
            text-decoration-color: rgba(52, 217, 208, .38);
        }
        .article-body a:hover {
            color: #7DF1EB;
            text-decoration-color: currentColor;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5em 0;
            border: 1px solid rgba(255, 255, 255, .08);
        }
        .article-body figure {
            margin: 1.7em 0;
            text-align: center;
        }
        .article-body figcaption {
            display: block;
            text-align: center;
            font-size: 13.5px;
            color: var(--text-weak);
            margin-top: 8px;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.7em 0;
            font-size: 15px;
        }
        .article-body th,
        .article-body td {
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .02);
            padding: 11px 15px;
            text-align: left;
        }
        .article-body th {
            background: rgba(62, 123, 250, .10);
            color: #fff;
            font-weight: 600;
        }

        .article-missing {
            padding: 50px 10px;
            text-align: center;
            color: var(--text-sub);
        }
        .article-missing i {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            margin: 0 auto 20px;
            border: 2px dashed rgba(255, 255, 255, .22);
            border-radius: 50%;
            font-size: 30px;
            color: var(--text-weak);
        }
        .article-missing h2 {
            font-size: 24px;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .article-missing p {
            margin: 0 auto 24px;
            max-width: 380px;
        }
        .article-missing .btn {
            margin-top: 6px;
        }

        .article-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 22px;
        }
        .article-actions .share-panel {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
        }
        .icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            color: var(--text-sub);
            border: 1px solid rgba(255, 255, 255, .15);
            background: rgba(255, 255, 255, .035);
            cursor: pointer;
            transition: all .25s ease;
            line-height: 1;
        }
        .icon-btn i {
            font-size: 15px;
        }
        .icon-btn:hover {
            border-color: rgba(93, 150, 255, .5);
            color: #fff;
            background: rgba(62, 123, 250, .1);
        }
        .icon-btn.liked {
            color: var(--danger-warn);
            border-color: rgba(246, 180, 75, .6);
            background: rgba(246, 180, 75, .08);
        }
        .btn-like {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            height: 42px;
            border-radius: 999px;
        }

        .post-source-note {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-weak);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, .08);
            background: rgba(255, 255, 255, .02);
            padding: 13px 16px;
        }
        .post-source-note i {
            color: var(--cyan);
            font-size: 14px;
        }

        .side-inner {
            position: sticky;
            top: 96px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .side-card {
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .04);
            backdrop-filter: blur(14px);
            border-radius: var(--radius-md);
            padding: 20px;
        }
        .side-card h3 {
            font-size: 16px;
            margin: 0 0 14px;
            font-weight: 600;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: .02em;
        }
        .side-card h3 i {
            color: var(--cyan);
            font-size: 14px;
        }
        .side-meta-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .side-meta-list li {
            display: flex;
            justify-content: space-between;
            gap: 14px;
            padding: 9px 0;
            font-size: 14px;
            color: var(--text-sub);
            border-bottom: 1px dashed rgba(255, 255, 255, .08);
        }
        .side-meta-list li:last-child {
            border-bottom: 0;
        }
        .side-meta-list .title {
            color: var(--text-weak);
            flex-shrink: 0;
        }
        .side-meta-list .value {
            color: var(--text-main);
            text-align: right;
            word-break: break-all;
        }
        .side-nav-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .side-nav-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 12px;
            border-radius: 10px;
            color: var(--text-sub);
            font-size: 14px;
            border: 1px solid transparent;
            transition: all .22s ease;
        }
        .side-nav-links a span {
            line-height: 1.5;
        }
        .side-nav-links a i {
            color: var(--text-weak);
            font-size: 13px;
            transition: transform .25s ease;
        }
        .side-nav-links a:hover {
            background: rgba(62, 123, 250, .1);
            border-color: rgba(93, 150, 255, .2);
            color: #fff;
        }
        .side-nav-links a:hover i {
            transform: translateX(4px);
            color: var(--cyan);
        }
        .side-inner-note {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            display: flex;
            gap: 8px;
            padding-top: 12px;
            margin-top: 6px;
            border-top: 1px dashed rgba(255, 255, 255, .1);
        }
        .side-inner-note i {
            color: var(--cyan);
        }
        .side-backtop {
            width: 100%;
        }

        .extended-section {
            position: relative;
            padding: 108px 0 40px;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 34px;
            flex-wrap: wrap;
        }
        .section-head .section-title {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 8px;
            text-align: left;
        }
        .section-head .section-desc {
            color: var(--text-sub);
            margin: 0;
            font-size: 15px;
            max-width: 520px;
        }
        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--text-sub);
            font-size: 14px;
            flex-shrink: 0;
        }
        .section-more i {
            transition: transform .3s ease;
        }
        .section-more:hover {
            color: var(--cyan);
        }
        .section-more:hover i {
            transform: translateX(4px);
        }

        .related-grid {
            row-gap: 22px;
            column-gap: 22px;
        }
        .related-card {
            height: 100%;
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .045);
            overflow: hidden;
            transition: all .3s var(--ease);
            backdrop-filter: blur(8px);
        }
        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(93, 150, 255, .35);
            background: rgba(255, 255, 255, .065);
            box-shadow: 0 20px 44px rgba(8, 16, 40, .45);
        }
        .related-cover {
            display: block;
            aspect-ratio: 16 / 9;
            background-color: var(--bg-raise);
            overflow: hidden;
            position: relative;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s var(--ease);
        }
        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }
        .related-info {
            padding: 18px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-title {
            display: block;
            font-size: 18px;
            line-height: 1.45;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
            max-width: 100%;
        }
        .related-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
            margin: 0 0 14px;
            flex: 1;
        }
        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-size: 14px;
            margin-top: 4px;
        }
        .related-link i {
            transition: transform .25s ease;
        }
        .related-card:hover .related-link i {
            transform: translateX(4px);
        }

        .cta-block {
            position: relative;
            margin: 80px 0 0;
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .1);
            background: var(--bg-raise);
            padding: clamp(28px, 5vw, 64px);
            text-align: center;
        }
        .cta-block::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(620px 250px at 16% 18%, rgba(62, 123, 250, .14), transparent 60%),
                radial-gradient(680px 280px at 88% 85%, rgba(52, 217, 208, .12), transparent 60%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 780px;
            margin: 0 auto;
        }
        .cta-icon {
            width: 66px;
            height: 66px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(62, 123, 250, .13);
            border: 1px solid rgba(93, 150, 255, .32);
            color: var(--cyan);
            font-size: 24px;
            margin-bottom: 24px;
        }
        .cta-block h2 {
            font-size: clamp(23px, 3vw, 32px);
            font-weight: 700;
            margin: 0 0 12px;
            line-height: 1.35;
        }
        .cta-block p {
            color: var(--text-sub);
            margin: 0 auto 28px;
            max-width: 600px;
            font-size: 16px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }
        .copy-tip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            margin-top: 18px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            background: rgba(63, 201, 121, .1);
            border: 1px solid rgba(63, 201, 121, .3);
            color: #7EE7B0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(5px);
            transition: all .3s ease;
        }
        .copy-tip.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .copy-tip.error {
            background: rgba(246, 180, 75, .1);
            border-color: rgba(246, 180, 75, .24);
            color: #FFE3AF;
        }

        .site-footer {
            position: relative;
            border-top: 1px solid rgba(255, 255, 255, .08);
            background: #0A111F;
            margin-top: 80px;
            padding: 70px 0 24px;
            font-size: 14px;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 8%;
            right: 18%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(52, 217, 208, .6), transparent);
        }
        .foot-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .foot-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-main);
            font-size: 21px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .foot-brand .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--cyan-blue);
            color: #fff;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 700;
            border: 1px solid rgba(255, 255, 255, .18);
        }
        .foot-desc {
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 12px;
            max-width: 46ch;
        }
        .site-footer h4 {
            color: #CFE0FF;
            font-size: 15px;
            font-weight: 600;
            margin: 6px 0 13px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 9px;
        }
        .site-footer ul a {
            color: var(--text-sub);
            transition: color .2s, padding-left .25s ease;
            padding-left: 0;
        }
        .site-footer ul a:hover {
            color: var(--cyan);
            padding-left: 5px;
        }
        .foot-note {
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding-top: 25px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-weak);
        }

        @media (max-width: 1024px) {
            .foot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .nav-links {
                order: 5;
                width: 100%;
                justify-content: flex-start;
                gap: 6px;
                padding-top: 6px;
            }
            .navbar {
                gap: 10px;
            }
            .post-hero {
                min-height: auto;
                padding: 135px 0 54px;
            }
            .article-panel {
                padding: 30px;
            }
            .side-inner {
                position: static;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 66px;
            }
            .grid-container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .section-pad {
                padding: 60px 0;
            }
            .navbar {
                gap: 0;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 42px;
                height: 42px;
                border-radius: 12px;
                font-size: 19px;
                color: var(--text-main);
                background: rgba(255, 255, 255, .06);
                border: 1px solid rgba(255, 255, 255, .12);
                cursor: pointer;
                margin-left: auto;
                order: 2;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                order: 3;
                background: rgba(15, 23, 40, .96);
                border: 1px solid rgba(255, 255, 255, .1);
                border-radius: 16px;
                padding: 14px;
                margin-top: 10px;
                box-shadow: 0 22px 42px rgba(4, 8, 20, .5);
            }
            .nav-links a {
                font-size: 15px;
                padding: 12px 12px;
            }
            .nav-links a.active {
                border: 0;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-check:checked~.nav-links {
                display: flex;
            }
            .nav-actions {
                margin-left: auto;
                order: 2;
            }
            .header-search {
                display: none;
            }
            .navbar .brand {
                margin-right: auto;
                font-size: 17px;
            }
            .small-btn {
                padding: 7px 10px;
                font-size: 12px;
            }
            .post-title {
                font-size: clamp(26px, 5vw, 34px);
            }
            .post-hero {
                padding-top: 116px;
            }
            .article-section {
                padding-top: 32px;
            }
            .article-panel {
                border-radius: 18px;
                padding: 22px 18px;
            }
            .article-body p {
                font-size: 16px;
            }
            .article-actions {
                gap: 8px;
            }
            .extended-section {
                padding-top: 64px;
            }
            .related-card {
                max-width: 520px;
                margin-left: auto;
                margin-right: auto;
            }
            .cta-block {
                padding: 34px 16px;
                margin-top: 55px;
            }
            .cta-buttons .btn {
                width: 100%;
            }
        }

        @media (min-width: 640px) and (max-width: 1024px) {
            .article-grid .cell:first-child {
                padding-right: 0;
            }
        }
        @media (max-width: 520px) {
            .post-meta {
                gap: 10px 14px;
            }
            .meta-item span {
                word-break: break-all;
            }
            .foot-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }
            .post-cate-row {
                gap: 8px;
            }
            .article-panel:hover {
                transform: none;
            }
            .btn,
            .icon-btn {
                min-height: 44px;
            }
            .badge {
                font-size: 12px;
                padding: 5px 11px;
            }
            .foot-note {
                justify-content: flex-start;
                align-items: flex-start;
                flex-direction: column;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *:before,
            *:after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #0F1728;
            --color-bg-up: #131F36;
            --color-glass: rgba(255, 255, 255, .045);
            --color-brand: #3E7BFA;
            --color-accent: #34D9D0;
            --color-info: #90A7CE;
            --color-text: #EAF1FF;
            --color-text-2: #AEBFDE;
            --color-warn: #F6B44B;
            --color-success: #3FCB79;
            --border-color: rgba(255, 255, 255, .12);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 20px 50px rgba(8, 16, 40, .35);
            --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition-base: all .3s ease;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background: var(--color-primary);
            color: var(--color-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            top: -20%;
            right: -5%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(62, 123, 250, .11) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        body::after {
            content: "";
            position: fixed;
            bottom: 10%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(52, 217, 208, .05) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
        }
        a {
            color: var(--color-text);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover,
        a:focus {
            color: var(--color-accent);
            outline: none;
        }
        button:focus,
        input:focus,
        textarea:focus {
            outline: 2px solid rgba(62, 123, 250, .55);
            outline-offset: 2px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .grid-container {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 2;
        }
        @media screen and (max-width: 640px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 23, 40, .58);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            box-shadow: 0 2px 20px rgba(0, 0, 0, .08);
        }
        .site-header.scrolled {
            position: fixed;
            background: rgba(15, 23, 40, .92);
            border-bottom-color: rgba(255, 255, 255, .12);
            box-shadow: 0 8px 30px rgba(0, 0, 0, .16);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 74px;
            gap: 18px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 22px;
            letter-spacing: .5px;
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-brand), #2563eb);
            border: 1px solid rgba(255, 255, 255, .28);
            border-radius: 10px;
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 18px rgba(62, 123, 250, .26);
        }
        .brand-name {
            color: var(--color-text);
            white-space: nowrap;
        }
        .nav-check {
            display: none;
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--color-text);
            padding: 8px 10px;
            cursor: pointer;
        }
        .nav-toggle:hover {
            color: var(--color-brand);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links a {
            display: block;
            padding: 8px 16px;
            border-radius: 999px;
            color: var(--color-info);
            font-size: 15px;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition-base);
        }
        .nav-links a:hover,
        .nav-links a:focus {
            color: #fff;
            background: rgba(62, 123, 250, .22);
        }
        .nav-links a.active {
            color: #fff;
            background: rgba(62, 123, 250, .32);
            box-shadow: inset 0 0 0 1px rgba(62, 123, 250, .5);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 999px;
            padding: 0 16px;
            height: 42px;
            width: 190px;
        }
        .header-search i {
            color: var(--color-info);
            font-size: 14px;
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            color: var(--color-text);
            font-size: 14px;
            width: 100%;
        }
        .header-search input::placeholder {
            color: var(--color-text-2);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 24px;
            cursor: pointer;
            transition: var(--transition-base);
            border: none;
            line-height: 1.2;
            min-height: 44px;
        }
        .btn i {
            font-size: 15px;
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .16);
            color: var(--color-text);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(52, 217, 208, .5);
            color: var(--color-text);
            transform: translateY(-1px);
        }
        .small-btn {
            min-height: 38px;
            padding: 6px 16px;
            font-size: 14px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-brand) 0%, #2563eb 50%, #1e7a7c 100%);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .28);
            box-shadow: 0 0 12px rgba(62, 123, 250, .25), 0 4px 14px rgba(52, 217, 208, .12);
        }
        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 24px rgba(62, 123, 250, .55), 0 6px 20px rgba(52, 217, 208, .24);
        }
        .btn-accent {
            background: linear-gradient(135deg, var(--color-accent), #209d95);
            color: #0A1929;
            font-weight: 700;
            border: 1px solid rgba(255, 255, 255, .18);
        }
        .btn-accent:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 22px rgba(52, 217, 208, .45);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .2);
            color: var(--color-text);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: 0 0 10px rgba(52, 217, 208, .16);
        }
        .btn-block {
            width: 100%;
        }
        @media screen and (max-width: 1023px) {
            .nav-toggle {
                display: block;
                z-index: 20;
            }
            .nav-links {
                position: fixed;
                top: 74px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: flex-start;
                background: rgba(15, 23, 40, .97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 20px 24px 28px;
                gap: 8px;
                display: none;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
                box-shadow: 0 18px 40px rgba(0, 0, 0, .44);
            }
            .nav-check:checked+.nav-toggle+.nav-links {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                font-size: 16px;
            }
            .nav-actions .btn-ghost {
                display: none;
            }
            .header-search {
                width: 42px;
                padding: 0 12px;
            }
            .header-search input {
                display: none;
            }
            .header-search i {
                font-size: 16px;
                margin: 0 auto;
            }
        }
        @media screen and (max-width: 520px) {
            .navbar {
                gap: 8px;
            }
            .brand-name {
                font-size: 18px;
                letter-spacing: 0;
            }
            .brand-mark {
                min-width: 32px;
                height: 32px;
                font-size: 13px;
                border-radius: 8px;
            }
            .brand {
                font-size: 18px;
                gap: 8px;
            }
        }

        /* ===== Banner ===== */
        .secure-banner {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 150px 0 80px;
            background: linear-gradient(180deg, var(--color-primar) 0%, var(--color-bg-up) 100%);
            background-size: cover;
            background-position: center;
            background-image: url("/assets/images/backpic/back-2.webp");
            overflow: hidden;
        }
        .secure-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(155deg, rgba(15, 23, 40, .86) 0%, rgba(15, 23, 40, .66) 60%, rgba(19, 31, 54, .82) 100%);
            z-index: 1;
        }
        .secure-banner-cnt {
            position: relative;
            z-index: 3;
            max-width: 980px;
        }
        .art-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--color-accent);
            margin-bottom: 22px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .art-badge i {
            font-size: 13px;
        }
        .secure-banner h1 {
            font-size: 48px;
            line-height: 1.22;
            font-weight: 800;
            color: var(--color-text);
            margin: 0 0 20px;
            letter-spacing: 1px;
        }
        .secure-banner h1 .word-space {
            margin-right: .22em;
        }
        .secure-banner h1 .outline-text {
            background: linear-gradient(135deg, #ffffff 30%, #a4c7ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .secure-banner p.lead {
            color: var(--color-text-2);
            font-size: 17px;
            line-height: 1.85;
            max-width: 68ch;
            margin-bottom: 34px;
        }
        .banner-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .banner-meta {
            display: flex;
            gap: 28px;
            margin-top: 34px;
            flex-wrap: wrap;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-info);
        }
        .meta-item i {
            color: var(--color-accent);
        }
        @media screen and (max-width: 767px) {
            .secure-banner {
                min-height: 540px;
                padding-top: 130px;
            }
            .secure-banner h1 {
                font-size: 32px;
                line-height: 1.3;
            }
            .secure-banner p.lead {
                font-size: 15px;
            }
            .banner-actions {
                gap: 12px;
            }
            .banner-meta {
                gap: 16px;
            }
        }

        /* ===== common base ===== */
        .section-pad {
            padding: 85px 0;
        }
        .section-tight {
            padding: 50px 0;
        }
        .sec-head {
            margin-bottom: 46px;
        }
        .sec-head .sec-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .sec-head .sec-tag i {
            font-size: 16px;
        }
        .sec-head h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 14px;
            color: var(--color-text);
        }
        .sec-head p {
            font-size: 15px;
            color: var(--color-text-2);
            max-width: 70ch;
            line-height: 1.8;
        }
        .sec-center {
            text-align: center;
        }
        .sec-center p {
            margin-left: auto;
            margin-right: auto;
        }
        @media screen and (max-width: 767px) {
            .section-pad {
                padding: 56px 0;
            }
            .sec-head {
                margin-bottom: 34px;
            }
            .sec-head h2 {
                font-size: 26px;
                line-height: 1.4;
            }
        }

        /* ===== 安全防护核心 ===== */
        .security-core {
            position: relative;
        }
        .core-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 18px;
        }
        .core-card {
            background: var(--color-glass);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
            transition: var(--transition-base);
            overflow: hidden;
        }
        .core-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-brand), transparent);
            opacity: 0;
            transition: var(--transition-base);
        }
        .core-card:hover {
            border-color: rgba(93, 150, 255, .35);
            background: rgba(255, 255, 255, .07);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .core-card:hover::before {
            opacity: 1;
        }
        .core-icon {
            width: 46px;
            height: 46px;
            background: rgba(62, 123, 250, .14);
            border: 1px solid rgba(62, 123, 250, .18);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            color: var(--color-brand);
            margin-bottom: 18px;
        }
        .core-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 9px;
            color: var(--color-text);
        }
        .core-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-2);
            margin-bottom: 16px;
        }
        .core-card .mini-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--color-tint);
            background: rgba(52, 217, 208, .14);
            padding: 4px 9px;
            border-radius: 999px;
        }
        @media screen and (max-width: 1023px) {
            .core-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media screen and (max-width: 540px) {
            .core-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 保护流程 ===== */
        .process-band {
            background: rgba(255, 255, 255, .03);
            border-top: 1px solid rgba(255, 255, 255, .06);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            position: relative;
            overflow: hidden;
        }
        .process-grid {
            display: flex;
            gap: 24px;
            margin: 0 -12px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .process-grid .process-col {
            flex: 0 0 calc(33.333% - 24px);
            max-width: calc(33.333% - 24px);
            margin: 0 12px;
        }
        .process-item {
            background: rgba(255, 255, 255, .04);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            border: 1px solid transparent;
            border-color: rgba(255, 255, 255, .1);
            transition: var(--transition-base);
            height: 100%;
            position: relative;
        }
        .process-item:hover {
            border-color: rgba(52, 217, 208, .35);
            transform: translateY(-4px);
        }
        .process-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-brand), #34D9D0);
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            margin-bottom: 18px;
        }
        .process-item h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }
        .process-item p {
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .process-item ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .process-item li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            color: var(--color-info);
            padding: 5px 0;
            line-height: 1.7;
        }
        .process-item li i {
            color: var(--color-success);
            margin-top: 4px;
            font-size: 13px;
        }
        @media screen and (max-width: 1023px) {
            .process-grid .process-col {
                flex: 0 0 calc(50% - 16px);
                max-width: calc(50% - 16px);
                margin: 0 8px;
            }
        }
        @media screen and (max-width: 640px) {
            .process-grid {
                gap: 14px;
                margin: 0;
            }
            .process-grid .process-col {
                flex: 0 0 100%;
                max-width: 100%;
                margin: 0 0 8px;
            }
        }

        /* ===== 安全场景区块 ===== */
        .scene-area {
            position: relative;
        }
        .scene-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-bottom: 40px;
        }
        .scene-card {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .scene-card:hover {
            border-color: rgba(93, 150, 255, .4);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
        }
        .scene-card .scene-img {
            height: 216px;
            background-size: cover;
            background-position: center;
        }
        .scene-card .scene-infos {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .scene-tags {
            margin-bottom: 8px;
        }
        .scene-tags .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(62, 123, 250, .13);
            color: #8ab0ff;
            border: 1px solid rgba(62, 123, 250, .16);
        }
        .scene-card h3 {
            font-size: 20px;
            color: var(--color-text);
            margin-bottom: 10px;
            font-weight: 800;
        }
        .scene-card p {
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.75;
            margin-bottom: 18px;
        }
        .scene-foot {
            margin-top: auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding-top: 14px;
        }
        .scene-foot .link-more {
            font-size: 14px;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-base);
        }
        .scene-foot .link-more i {
            transition: var(--transition-base);
        }
        .scene-foot .link-more:hover i {
            transform: translateX(3px);
        }
        @media screen and (max-width: 1023px) {
            .scene-wrap {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 安全管理清单 ===== */
        .checklist-area {
            background: linear-gradient(145deg, #131F36, #0F1728);
        }
        .checklist-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px 32px;
        }
        .check-cell {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: rgba(255, 255, 255, .04);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            border: 1px solid rgba(255, 255, 255, .1);
            transition: var(--transition-base);
        }
        .check-cell:hover {
            background: rgba(255, 255, 255, .07);
            border-color: rgba(52, 217, 208, .35);
        }
        .check-icon {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 10px;
            background: rgba(52, 217, 208, .12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 16px;
            border: 1px solid rgba(52, 217, 208, .18);
        }
        .check-cell h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .check-cell p {
            font-size: 13px;
            line-height: 1.7;
            color: var(--color-text-2);
        }
        @media screen and (max-width: 767px) {
            .checklist-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 内容列表（简介型） ===== */
        .cms-news-region {
            margin-top: 20px;
        }
        .news-list-v {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            gap: 18px;
            padding: 20px;
            background: var(--color-glass);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-md);
            transition: var(--transition-base);
        }
        .news-item:hover {
            border-color: rgba(93, 150, 255, .35);
            transform: translateX(4px);
        }
        .news-item .thumb {
            display: block;
            width: 120px;
            height: 86px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-item-content {
            flex: 1;
        }
        .meta-line {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 6px;
            font-size: 12px;
            color: var(--color-info);
        }
        .meta-line .tag-cat {
            color: var(--color-accent);
            background: rgba(52, 217, 208, .1);
            padding: 3px 10px;
            border-radius: 999px;
        }
        .meta-line .date {
            color: var(--color-text-2);
        }
        .news-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .news-item p {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.7;
        }
        .empty-news {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 60px 32px;
            border: 1px dashed rgba(255, 255, 255, .22);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .03);
            text-align: center;
        }
        .empty-news i {
            font-size: 30px;
            color: var(--color-info);
            opacity: .55;
        }
        .empty-news span {
            color: var(--color-text-2);
            font-size: 15px;
        }
        @media screen and (max-width: 648px) {
            .news-item .thumb {
                width: 92px;
                height: 76px;
            }
            .news-item {
                gap: 12px;
                padding: 14px;
            }
            .meta-line {
                flex-wrap: wrap;
                gap: 10px;
            }
        }

        /* ---- 相关专题 ---- */
        .related-area {
            background: #131F36;
            border-top: 1px solid rgba(255, 255, 255, .04);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 22px;
        }
        .rel-card {
            display: flex;
            gap: 18px;
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: var(--transition-base);
        }
        .rel-card:hover {
            border-color: rgba(93, 150, 255, .4);
            transform: translateY(-3px);
            background: rgba(255, 255, 255, .07);
        }
        .rel-thumb {
            width: 66px;
            height: 66px;
            min-width: 66px;
            border-radius: var(--radius-sm);
            object-fit: cover;
        }
        .rel-cnt {
            flex: 1;
        }
        .rel-cnt .rel-label {
            font-size: 12px;
            color: var(--color-accent);
            display: block;
            margin-bottom: 4px;
        }
        .rel-cnt h3 {
            font-size: 17px;
            line-height: 1.45;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .rel-cnt p {
            font-size: 13px;
            color: var(--color-text-2);
            line-height: 1.65;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rel-cnt a {
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-brand);
        }
        .rel-cnt a i {
            font-size: 13px;
            transition: var(--transition-base);
        }
        .rel-cnt a:hover i {
            transform: translateX(3px);
        }
        @media screen and (max-width: 767px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .rel-card {
                padding: 16px;
                gap: 14px;
            }
            .rel-thumb {
                width: 56px;
                height: 56px;
                min-width: 56px;
            }
        }

        /* ===== FAQ ===== */
        .faq-bg {
            position: relative;
        }
        .faq-list {
            max-width: 920px;
            margin: 0 auto 30px;
        }
        .faq-item {
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            min-height: 56px;
            transition: var(--transition-base);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-toggle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            position: relative;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            transition: var(--transition-base);
        }
        .faq-item summary .faq-toggle::before,
        .faq-item summary .faq-toggle::after {
            content: "";
            background: var(--color-accent);
            position: absolute;
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .faq-item summary .faq-toggle::before {
            width: 10px;
            height: 1.5px;
        }
        .faq-item summary .faq-toggle::after {
            width: 1.5px;
            height: 10px;
        }
        .faq-item[open] summary .faq-toggle::after {
            opacity: 0;
            transform: rotate(90deg) scale(.5);
        }
        .faq-item[open] summary {
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            color: var(--color-accent);
        }
        .faq-ans {
            padding: 4px 24px 22px;
        }
        .faq-ans p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-2);
            margin-bottom: 12px;
        }
        .faq-ans ul {
            list-style: none;
            margin: 10px 0 0;
            padding: 0;
        }
        .faq-ans li {
            position: relative;
            padding-left: 22px;
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-bottom: 6px;
        }
        .faq-ans li::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 50%;
            position: absolute;
            left: 0;
            top: 10px;
        }
        @media screen and (max-width: 640px) {
            .faq-item summary {
                padding: 16px 16px;
                font-size: 15px;
                gap: 10px;
            }
            .faq-ans {
                padding: 4px 16px 18px;
            }
        }

        /* ===== CTA ===== */
        .cta-area {
            position: relative;
            padding: 60px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(62, 123, 250, .12), rgba(52, 217, 208, .06));
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            text-align: center;
            padding: 58px 40px;
            position: relative;
        }
        .cta-box::before {
            content: "";
            width: 420px;
            height: 220px;
            background: radial-gradient(circle, rgba(62, 123, 250, .18) 0%, transparent 72%);
            position: absolute;
            left: 50%;
            top: -30%;
            transform: translateX(-50%);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 18px;
        }
        .cta-box p {
            font-size: 16px;
            line-height: 1.8;
            max-width: 58ch;
            margin-left: auto;
            margin-right: auto;
            color: var(--color-text-2);
            margin-bottom: 32px;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        @media screen and (max-width: 767px) {
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 25px;
            }
        }

        /* ===== footer ===== */
        .site-footer {
            background: #0B1120;
            border-top: 1px solid rgba(255, 255, 255, .08);
            position: relative;
            z-index: 4;
        }
        .site-footer::before {
            content: "";
            display: block;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(62, 123, 250, .3), rgba(52, 217, 208, .24), transparent);
        }
        .foot-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 0.9fr 1.2fr;
            gap: 36px;
            padding: 48px 0 34px;
        }
        .foot-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 800;
        }
        .foot-brand .ft-mark {
            background: linear-gradient(135deg, #3E7BFA, #1e3a80);
            color: #fff;
            border-radius: 8px;
            display: inline-flex;
            min-width: 34px;
            height: 34px;
            align-items: center;
            justify-content: center;
            padding: 0 4px;
        }
        .foot-desc {
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-top: 12px;
        }
        .site-footer h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .2px;
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li a {
            display: block;
            color: var(--color-text-2);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition-base);
        }
        .site-footer ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .foot-note {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--color-text-2);
            gap: 12px;
            flex-wrap: wrap;
        }
        @media screen and (max-width: 1023px) {
            .foot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media screen and (max-width: 640px) {
            .foot-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .foot-note {
                padding-top: 18px;
                flex-direction: column;
                align-items: flex-start;
                line-height: 1.7;
            }
        }

        /* feature section */
        .feature-pair {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 48px;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-bg-up);
            border: 1px solid rgba(255, 255, 255, .08);
        }
        .feature-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            border-radius: calc(var(--radius-lg) - 1px);
        }
        .feature-copy h3 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.42;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .feature-copy p {
            color: var(--color-text-2);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 22px;
        }
        .feature-copy ul {
            list-style: none;
            margin: 0 0 18px;
            padding: 0;
        }
        .feature-copy li {
            color: var(--color-info);
            font-size: 15px;
            display: flex;
            align-items: center;
            margin-bottom: 10px;
        }
        .feature-copy li i {
            color: var(--color-accent);
            margin-right: 10px;
            font-size: 15px;
            min-width: 16px;
        }
        .feature-copy .btn {
            margin-right: 8px;
        }
        @media screen and (max-width: 1023px) {
            .feature-pair {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-copy h3 {
                font-size: 23px;
                line-height: 1.5;
            }
        }
        @media screen and (max-width: 640px) {
            .feature-image img {
                height: 220px;
            }
        }

        /* 合集编号条目 */
        .catalog-list {
            max-width: 900px;
        }
        .chapter-item {
            display: flex;
            gap: 20px;
            background: rgba(255, 255, 255, .04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, .1);
            padding: 22px 24px;
            margin-bottom: 16px;
            transition: var(--transition-base);
        }
        .chapter-item:hover {
            border-color: rgba(52, 217, 208, .45);
            background: rgba(255, 255, 255, .08);
            transform: translateX(4px);
        }
        .chapter-num {
            width: 42px;
            height: 42px;
            min-width: 42px;
            background: rgba(52, 217, 208, .08);
            border: 1px solid rgba(52, 217, 208, .28);
            color: var(--color-accent);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            line-height: 1;
        }
        .chapter-cnt {
            flex: 1;
        }
        .chapter-cnt h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .chapter-cnt p {
            font-size: 14px;
            color: var(--color-text-2);
            line-height: 1.8;
            margin-bottom: 10px;
        }
        .chapter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .chapter-tags span {
            font-size: 12px;
            color: var(--color-tint);
            background: rgba(255, 255, 255, .05);
            padding: 4px 10px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .1);
        }
        @media screen and (max-width: 640px) {
            .chapter-item {
                padding: 16px;
                gap: 14px;
            }
        }
        .mt-2{
            margin-top:10px;
        }

/* roulang page: category2 */
/* ===== CSS设计变量 ===== */
        :root {
            --color-bg: #0F1728;
            --color-bg-elevated: #131F36;
            --color-glass: rgba(255, 255, 255, .045);
            --color-glass-strong: rgba(255, 255, 255, .09);
            --color-primary: #3E7BFA;
            --color-accent: #34D9D0;
            --color-info: #90A7CE;
            --color-text-main: #EAF1FF;
            --color-text-secondary: #AEBFDE;
            --color-warning: #F6B44B;
            --color-success: #3FCB79;
            --color-border: rgba(255, 255, 255, .12);
            --color-border-hover: rgba(93, 150, 255, .35);
            --radius-large: 24px;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-tag: 999px;
            --shadow-card: 0 18px 44px rgba(8, 16, 40, .25);
            --shadow-btn: 0 0 22px rgba(52, 217, 208, .22);
            --space-section: 96px;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, sans-serif;
        }
        
        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        
        body::before {
            content: "";
            position: fixed;
            top: -10%;
            left: -20%;
            width: 60vw;
            height: 60vh;
            background: radial-gradient(circle at center, rgba(62, 123, 250, .18), transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        
        body::after {
            content: "";
            position: fixed;
            bottom: -10%;
            right: -20%;
            width: 55vw;
            height: 55vh;
            background: radial-gradient(circle at center, rgba(52, 217, 208, .08), transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color .2s ease;
        }
        
        a:hover {
            color: var(--color-text-main);
        }
        
        ul, ol {
            list-style: none;
        }
        
        button {
            font-family: var(--font-sans);
            cursor: pointer;
        }
        
        input, textarea {
            font-family: var(--font-sans);
        }
        
        /* 通用容器 */
        .grid-container {
            max-width: 1240px;
            width: 100%;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        /* 辅助类 */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        
        /* ===== Header Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 23, 40, .6);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: background .3s ease, box-shadow .3s ease;
        }
        
        .site-header.is-scrolled {
            background: rgba(15, 23, 40, .93);
            box-shadow: 0 8px 28px rgba(8, 16, 40, .35);
        }
        
        .site-header .navbar {
            display: flex;
            align-items: center;
            min-height: 72px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        
        .brand {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 9px;
            background: linear-gradient(135deg, var(--color-primary), #1A5CDE);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: -.3px;
            background-clip: border-box;
            box-shadow: 0 0 16px rgba(62, 123, 250, .3);
        }
        
        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-main);
            letter-spacing: 1px;
            white-space: nowrap;
        }
        
        .nav-check {
            display: none;
        }
        
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            background: rgba(255, 255, 255, .04);
            font-size: 18px;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
            flex: 1;
            justify-content: flex-end;
            flex-wrap: nowrap;
        }
        
        .nav-links > a {
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 9px 14px;
            border-radius: 8px;
            white-space: nowrap;
            transition: all .2s ease;
            line-height: 1.4;
        }
        
        .nav-links > a:hover {
            color: var(--color-text-main);
            background: rgba(255, 255, 255, .06);
        }
        
        .nav-links > a.active {
            color: var(--color-text-main);
            background: rgba(62, 123, 250, .15);
            box-shadow: inset 0 0 0 1px rgba(62, 123, 250, .3);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            flex-shrink: 0;
        }
        
        .nav-links.active + .nav-actions {
            margin-left: 0;
        }
        
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 6px 14px;
            height: 40px;
            transition: border-color .2s ease;
            max-width: 190px;
        }
        
        .header-search i {
            color: var(--color-info);
            font-size: 14px;
        }
        
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--color-text-main);
            font-size: 14px;
            width: 120px;
        }
        
        .header-search input::placeholder {
            color: var(--color-info);
        }
        
        .header-search input:focus {
            background: transparent;
            box-shadow: none;
        }
        
        .header-search:focus-within {
            border-color: rgba(52, 217, 208, .5);
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 26px;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            text-decoration: none;
            line-height: 1.4;
            height: auto;
        }
        
        .btn i {
            font-size: .92em;
        }
        
        .btn-ghost {
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--color-border);
            color: var(--color-text-main);
            backdrop-filter: blur(6px);
        }
        
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .3);
            color: #fff;
            transform: translateY(1px);
            box-shadow: none;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #3E7BFA, #2AA8C7);
            color: #fff;
            box-shadow: var(--shadow-btn), inset 0 1px 0 rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .08);
            position: relative;
        }
        
        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 36px rgba(52, 217, 208, .35), inset 0 1px 0 rgba(255, 255, 255, .2);
            color: #fff;
            filter: brightness(1.06);
        }
        
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(52, 217, 208, .2);
        }
        
        .small-btn {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 10px;
            height: 40px;
        }
        
        /* ===== Hero Section ===== */
        .access-hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 120px;
            padding-bottom: 90px;
            overflow: hidden;
            background-image: linear-gradient(0deg, var(--color-bg) 0%, rgba(15, 23, 40, .55) 45%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-attachment: initial;
        }
        
        .access-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(0deg, var(--color-bg) 0%, transparent 90%);
            pointer-events: none;
        }
        
        .access-hero .hero-grid {
            position: relative;
            z-index: 2;
            align-items: center;
        }
        
        .access-hero .hero-copy {
            max-width: 640px;
        }
        
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(62, 123, 250, .12);
            border: 1px solid rgba(62, 123, 250, .25);
            border-radius: var(--radius-tag);
            padding: 6px 16px;
            font-size: 14px;
            color: #8FB3FF;
            margin-bottom: 28px;
            font-weight: 500;
        }
        
        .access-hero h1 {
            font-size: 48px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-text-main);
            letter-spacing: 1px;
            margin-bottom: 18px;
        }
        
        .access-hero h1 .highlight {
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .access-hero .hero-sub {
            font-size: 18px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            max-width: 560px;
            margin-bottom: 36px;
        }
        
        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        
        .hero-note {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-info);
            font-size: 14px;
            background: rgba(0, 0, 0, .2);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-tag);
            padding: 7px 16px;
            margin-top: 22px;
            width: fit-content;
        }
        
        .hero-note i {
            color: var(--color-accent);
        }
        
        .hero-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-large);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 28px;
            box-shadow: var(--shadow-card);
            max-width: 420px;
            margin-left: auto;
        }
        
        .hero-card .card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        
        .hero-card .card-header span {
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        
        .hero-card .card-header strong {
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-main);
        }
        
        .hero-card .card-header .status-dot {
            display: inline-flex;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 8px rgba(63, 203, 121, .6);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: .5; }
        }
        
        .hero-card .access-path {
            display: flex;
            align-items: center;
            margin-bottom: 22px;
        }
        
        .hero-card .path-step {
            flex: 1;
            text-align: center;
        }
        
        .hero-card .path-step .icon-circle {
            width: 42px;
            height: 42px;
            margin: 0 auto 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .07);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 16px;
        }
        
        .hero-card .path-step.step-active .icon-circle {
            background: rgba(62, 123, 250, .18);
            border-color: rgba(62, 123, 250, .5);
            color: #8FB3FF;
            box-shadow: 0 0 14px rgba(62, 123, 250, .2);
        }
        
        .hero-card .path-step.step-active .icon-circle i {
            color: #8FB3FF;
        }
        
        .hero-card .path-step p {
            font-size: 12px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }
        
        .hero-card .path-line {
            width: 28px;
            height: 1px;
            background: rgba(255, 255, 255, .15);
            margin: 0 2px;
            flex-shrink: 0;
        }
        
        .hero-card .path-line.animated {
            background: linear-gradient(90deg, rgba(62, 123, 250, .4), rgba(52, 217, 208, .4));
        }
        
        .hero-card .step-tip {
            background: rgba(52, 217, 208, .06);
            border-left: 2px solid var(--color-accent);
            border-radius: 0 8px 8px 0;
            padding: 12px 16px;
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        
        .hero-card .step-tip i {
            color: var(--color-accent);
            margin-right: 6px;
        }
        
        .hero-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .hero-card .card-footer a {
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        /* ===== Section common styles ===== */
        .section-block {
            padding: var(--space-section) 0;
            position: relative;
        }
        
        .section-head {
            margin-bottom: 48px;
        }
        
        .section-head .section-tag {
            display: inline-block;
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 2px;
            margin-bottom: 12px;
        }
        
        .section-head h2 {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        
        .section-head p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 68ch;
            line-height: 1.85;
            margin-bottom: 0;
        }
        
        .section-head.light-on-dark h2 {
            color: #fff;
        }

        .section-title {
            font-size: 20px;
            color: var(--color-info);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }
        
        .section-title i {
            color: var(--color-primary);
        }
        
        /* 标题编号 */
        .section-num::before {
            content: "0" counter(section);
            counter-increment: section;
            display: inline-flex;
            width: 26px;
            height: 26px;
            border-radius: 8px;
            background: rgba(62, 123, 250, .13);
            border: 1px solid rgba(62, 123, 250, .25);
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            margin-right: 10px;
        }
        
        /* ===== 卖点 info cards ===== */
        .features-band {
            counter-reset: section;
            background: rgba(255, 255, 255, .02);
            border-top: 1px solid rgba(255, 255, 255, .04);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        
        .feature-card {
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            height: 100%;
            transition: all .3s ease;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        
        .feature-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        
        .feature-card .icon-box {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            background-color: rgba(62, 123, 250, .1);
            color: var(--color-primary);
            border: 1px solid rgba(62, 123, 250, .15);
        }
        
        .feature-card.accent-card .icon-box {
            background-color: rgba(52, 217, 208, .1);
            color: var(--color-accent);
            border-color: rgba(52, 217, 208, .15);
        }
        
        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .feature-card p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        
        /* ===== 访问流程 accessibility steps ===== */
        .steps-wrap {
            counter-reset: step;
            max-width: 820px;
            margin: 0 auto;
            position: relative;
        }
        
        .steps-wrap::before {
            content: "";
            position: absolute;
            left: 34px;
            top: 30px;
            bottom: 100px;
            width: 2px;
            background: linear-gradient(180deg, rgba(62, 123, 250, .2), rgba(52, 217, 208, .15));
            border-radius: 2px;
        }
        
        .step-item {
            position: relative;
            display: flex;
            gap: 24px;
            padding: 24px 0;
        }
        
        .step-item .step-num {
            flex-shrink: 0;
            width: 68px;
            text-align: right;
        }
        
        .step-item .step-num span {
            display: inline-flex;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-bg-elevated);
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 16px;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 0 4px rgba(62, 123, 250, .12);
        }
        
        .step-item .step-box {
            flex: 1;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            transition: border-color .25s ease;
            backdrop-filter: blur(6px);
        }
        
        .step-item .step-box:hover {
            border-color: var(--color-border-hover);
        }
        
        .step-item.step-even .step-num span {
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(52, 217, 208, .1);
        }
        
        .step-item h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--color-text-main);
        }
        
        .step-item p {
            color: var(--color-text-secondary);
            font-size: 15px;
            margin-bottom: 0;
            max-width: 62ch;
        }
        
        .step-item .inner-link {
            margin-top: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
        }
        
        /* ===== 适用场景 Scenario ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }
        
        .scenario-card {
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all .3s ease;
        }
        
        .scenario-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
        }
        
        .scenario-card .scenario-icon {
            color: var(--color-primary);
            font-size: 26px;
            margin-bottom: 16px;
        }
        
        .scenario-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-main);
        }
        
        .scenario-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        
        /* ===== 内容/文档列表 ===== */
        .content-band {
            background: rgba(255, 255, 255, .015);
            border-top: 1px solid rgba(255, 255, 255, .04);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        
        .access-guide-row {
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all .3s ease;
            overflow: hidden;
        }
        
        .access-guide-row:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }
        
        .access-guide-row .guide-text {
            padding: 32px;
        }
        
        .guide-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(62, 123, 250, .3);
            background: rgba(62, 123, 250, .08);
            color: #8FB3FF;
            border-radius: var(--radius-tag);
            padding: 3px 14px;
            font-size: 12px;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        
        .access-guide-row h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        
        .access-guide-row p {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }
        
        .guide-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        
        .guide-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-info);
            font-size: 13px;
        }
        
        .guide-meta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-main);
            font-weight: 500;
        }
        
        .guide-meta a i {
            transition: transform .2s ease;
            color: var(--color-accent);
        }
        
        .guide-meta a:hover i {
            transform: translateX(3px);
        }
        
        .access-guide-row .guide-image {
            min-height: 260px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        
        .access-guide-row .guide-image::after {
            content: "";
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: linear-gradient(90deg, var(--color-bg) 0%, transparent 45%);
            opacity: .6;
        }
        
        /* ===== 相关推荐相关专题 ===== */
        .topics-band {
            background: rgba(255, 255, 255, .02);
            border-top: 1px solid rgba(255, 255, 255, .04);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
            overflow: hidden;
        }
        
        .topic-chip {
            display: flex;
            flex-direction: row;
            align-items: center;
            gap: 18px;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-large);
            padding: 28px 32px;
            height: 100%;
            transition: all .3s ease;
        }
        
        .topic-chip:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }
        
        .topic-chip .topic-index {
            font-size: 28px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-style: normal;
            flex-shrink: 0;
            min-width: 48px;
            text-align: center;
        }
        
        .topic-chip .topic-body {
            flex: 1;
        }
        
        .topic-chip .topic-body h4 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        
        .topic-chip .topic-body span {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: block;
        }
        
        .topic-chip .arrow-link {
            color: var(--color-accent);
            font-size: 20px;
            transition: transform .2s ease;
        }
        
        .topic-chip:hover .arrow-link {
            transform: translateX(6px);
        }
        
        /* ===== 使用小贴士 value points ===== */
        .tips-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }
        
        .tip-item {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--color-glass);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-tag);
            padding: 12px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            transition: border-color .2s ease;
        }
        
        .tip-item i {
            color: var(--color-accent);
            font-size: 14px;
        }
        
        /* ===== FAQ ===== */
        .faq-band {
            background: rgba(15, 23, 40, .3);
            position: relative;
        }
        
        .faq-list {
            max-width: 880px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        
        .faq-item:hover {
            border-color: rgba(255, 255, 255, .2);
        }
        
        .faq-item summary {
            cursor: pointer;
            padding: 22px 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--color-text-main);
            font-size: 17px;
            font-weight: 500;
            line-height: 1.6;
            transition: color .2s ease;
        }
        
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        
        .faq-item summary::after {
            content: "\f107";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--color-primary);
            font-size: 16px;
            transition: transform .3s ease;
            flex-shrink: 0;
            text-rendering: auto;
        }
        
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        
        .faq-item summary:hover {
            color: #fff;
        }
        
        .faq-answer {
            padding: 0 30px 24px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            font-size: 15px;
            max-width: 72ch;
        }
        
        .faq-item[open] .faq-answer {
            animation: fadeIn .3s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-6px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .faq-answer a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        
        /* ===== CTA Section ===== */
        .cta-band {
            background-image: radial-gradient(circle at 80% 20%, rgba(62, 123, 250, .18), transparent 45%),
                radial-gradient(circle at 10% 80%, rgba(52, 217, 208, .1), transparent 35%);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        
        .cta-band .cta-inner {
            text-align: center;
            background: var(--color-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-large);
            padding: 64px 40px;
            max-width: 860px;
            margin: 0 auto;
            position: relative;
            box-shadow: var(--shadow-card);
        }
        
        .cta-band h2 {
            font-size: 36px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-text-main);
            margin-bottom: 16px;
        }
        
        .cta-band p {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
        }
        
        .cta-note {
            font-size: 14px;
            color: var(--color-info);
            margin-top: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        /* ===== 收藏 / 分享 actions ===== */
        .share-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }
        
        .action-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 14px;
            color: var(--color-text-main);
            transition: all .2s ease;
            line-height: 1.4;
            cursor: pointer;
        }
        
        .action-btn:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .25);
            transform: translateY(-1px);
        }
        
        .action-btn.fav-ing {
            color: var(--color-warning);
            border-color: rgba(246, 180, 75, .3);
            background: rgba(246, 180, 75, .08);
        }
        
        .action-btn i {
            font-size: 14px;
        }
        
        .inline-tip {
            background: rgba(63, 203, 121, .08);
            border: 1px solid rgba(63, 203, 121, .25);
            border-radius: var(--radius-btn);
            color: var(--color-text-secondary);
            padding: 8px 20px;
            font-size: 14px;
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: opacity .2s ease;
        }
        
        .inline-tip i {
            color: var(--color-success);
        }
        
        /* ===== Footer ===== */
        .site-footer {
            background: #0C1122;
            padding-top: 60px;
            border-top: 1px solid rgba(255, 255, 255, .06);
            position: relative;
            z-index: 2;
        }
        
        .site-footer .foot-grid {
            display: grid;
            grid-template-columns: 2.2fr 1fr 1fr 1.4fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        
        .foot-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-main);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
        }
        
        .foot-brand .brand-mark {
            background: rgba(62, 123, 250, .25);
            border: 1px solid rgba(62, 123, 250, .45);
            border-radius: 6px;
            box-shadow: none;
        }
        
        .foot-desc {
            font-size: 14px;
            color: var(--color-info);
            line-height: 1.75;
            margin-top: 12px;
            margin-bottom: 0;
        }
        
        .foot-grid h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-main);
            margin-bottom: 18px;
            position: relative;
        }
        
        .foot-grid ul li {
            margin-bottom: 10px;
        }
        
        .foot-grid ul a {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            transition: all .2s ease;
        }
        
        .foot-grid ul a:hover {
            color: var(--color-accent);
            padding-left: 3px;
        }
        
        .foot-note {
            border-top: 1px solid rgba(255, 255, 255, .05);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        
        .foot-note span {
            font-size: 13px;
            color: rgba(144, 167, 206, .8);
            line-height: 1.6;
        }
        
        /* ===== Scroll top ===== */
        .scroll-top {
            position: fixed;
            right: 28px;
            bottom: 28px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(15, 23, 40, .8);
            border: 1px solid var(--color-border);
            color: var(--color-text-main);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: all .25s ease;
            backdrop-filter: blur(10px);
        }
        
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        
        .scroll-top:hover {
            background: rgba(62, 123, 250, .3);
            border-color: var(--color-primary);
            color: #fff;
        }
        
        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            :root {
                --space-section: 70px;
            }
            
            .brand-name {
                font-size: 16px;
            }
            
            .nav-links > a {
                padding: 8px 10px;
                font-size: 14px;
            }
            
            .small-btn {
                display: none;
            }
            
            .header-search {
                max-width: 160px;
            }
            
            .access-hero h1 {
                font-size: 40px;
            }
            
            .foot-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-card {
                max-width: 340px;
            }
        }
        
        @media screen and (max-width: 768px) {
            :root {
                --space-section: 60px;
            }
            
            .site-header {
                background: rgba(15, 23, 40, .85);
            }
            
            .site-header .navbar {
                min-height: 64px;
                flex-wrap: wrap;
                padding: 8px 0;
            }
            
            .nav-toggle {
                display: flex;
                margin-left: auto;
            }
            
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(15, 23, 40, .98);
                border: 1px solid var(--color-border);
                border-radius: var(--radius-card);
                padding: 18px;
                gap: 4px;
                margin-top: 10px;
                align-items: flex-start;
            }
            
            .nav-check:checked ~ .nav-links {
                display: flex;
            }
            
            .nav-links > a {
                display: block;
                width: 100%;
                padding: 12px 14px;
                font-size: 15px;
            }
            
            .nav-actions {
                display: none;
            }
            
            .access-hero {
                min-height: auto;
                padding-top: 140px;
                padding-bottom: 60px;
            }
            
            .access-hero h1 {
                font-size: 34px;
                line-height: 1.35;
            }
            
            .access-hero .hero-sub {
                font-size: 16px;
            }
            
            .hero-card {
                margin: 32px 0 0;
                max-width: 100%;
            }
            
            .section-head h2 {
                font-size: 28px;
            }
            
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            
            .steps-wrap::before {
                left: 19px;
            }
            
            .step-item {
                gap: 12px;
            }
            
            .step-item .step-num {
                min-width: 44px;
                width: 44px;
            }
            
            .step-item .step-num span {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            
            .foot-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            
            .foot-note {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .access-guide-grid [class*="column"] + [class*="column"] {
                padding-top: 0;
            }
            
            .access-guide-row .guide-image {
                min-height: 200px;
                border-radius: 0 0 0 0;
            }
            
            .cta-inner {
                padding: 40px 24px;
            }
            
            .cta-band h2 {
                font-size: 28px;
            }
            
            .guide-meta {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            
            .share-actions {
                justify-content: flex-start;
            }
        }

        @media screen and (max-width: 520px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            
            .section-block {
                --space-section: 46px;
            }
            
            .access-hero h1 {
                font-size: 28px;
            }
            
            .access-hero .hero-sub {
                font-size: 15px;
                line-height: 1.75;
            }
            
            .section-head h2 {
                font-size: 24px;
            }
            
            .section-head p {
                font-size: 14px;
            }
            
            .feature-card {
                padding: 24px 18px;
            }
            
            .feature-card h3 {
                font-size: 18px;
            }
            
            .topic-chip {
                padding: 22px;
                align-items: flex-start;
                flex-direction: column;
                gap: 14px;
            }
            
            .topic-chip .topic-index {
                font-size: 22px;
                min-width: 30px;
                text-align: left;
            }
            
            .access-guide-row .guide-text {
                padding: 22px;
            }
            
            .step-item {
                padding: 16px 0;
            }
            
            .step-item .step-box {
                padding: 18px;
            }
            
            .step-item .step-num {
                min-width: 36px;
                width: 36px;
            }
            
            .step-item .step-num span {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            
            .fag-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            
            .faq-answer {
                padding: 0 18px 18px;
                font-size: 14px;
            }
            
            .form-box {
                padding: 20px;
            }
            
            .cta-band {
                padding: 60px 0;
            }
            
            .cta-band h2 {
                font-size: 24px;
            }
            
            .cta-actions .btn {
                flex: 1;
            }
            
            .scroll-top {
                right: 18px;
                bottom: 18px;
            }
        }
        
        .access-guide-row-row {
            margin-bottom: 18px;
        }

/* roulang page: category4 */
:root {
            --bg: #0F1728;
            --bg2: #131F36;
            --bg3: #111A2D;
            --panel: rgba(255, 255, 255, .045);
            --glass: rgba(255, 255, 255, .07);
            --blue: #3E7BFA;
            --cyan: #34D9D0;
            --muted: #90A7CE;
            --text: #EAF1FF;
            --sub: #AEBFDE;
            --gold: #F6B44B;
            --green: #3FCB79;
            --line: rgba(255, 255, 255, .12);
            --line-strong: rgba(93, 150, 255, .35);
            --radius-lg: 24px;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 22px 55px rgba(8, 16, 40, .35);
            --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, BlinkMacSystemFont, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(640px 420px at 8% 4%, rgba(62, 123, 250, .12), transparent 65%),
                radial-gradient(720px 500px at 92% 12%, rgba(52, 217, 208, .08), transparent 60%),
                radial-gradient(760px 600px at 50% 108%, rgba(62, 123, 250, .10), transparent 70%);
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: 100%;
            line-height: 1.15;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 .5em;
            color: var(--text);
            line-height: 1.35;
            font-weight: 700;
        }

        p {
            margin: 0 0 1em;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        .skip-link {
            position: fixed;
            left: 18px;
            top: -70px;
            z-index: 300;
            padding: 10px 18px;
            border-radius: 12px;
            background: var(--blue);
            color: #fff;
            transition: top .3s ease;
        }

        .skip-link:focus {
            top: 18px;
        }

        .grid-container {
            max-width: 1240px;
            padding-left: 32px;
            padding-right: 32px;
        }

        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 120;
            background: rgba(15, 23, 40, .46);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
        }

        .site-header.is-scrolled {
            position: fixed;
            background: rgba(15, 23, 40, .92);
            border-bottom-color: rgba(255, 255, 255, .12);
            box-shadow: 0 12px 40px rgba(8, 16, 40, .4);
        }

        .navbar {
            position: relative;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: flex-start;
            min-height: 84px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            margin-right: 34px;
            flex-shrink: 0;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--blue), var(--cyan));
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: .2px;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22), 0 10px 24px rgba(62, 123, 250, .28);
        }

        .brand-name {
            font-size: 21px;
            font-weight: 800;
            letter-spacing: .5px;
            color: #fff;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 44px;
            padding: 8px 14px;
            border-radius: 12px;
            color: var(--sub);
            font-size: 15px;
            font-weight: 500;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .06);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(62, 123, 250, .18);
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--blue), var(--cyan));
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            min-height: 44px;
            padding: 0 12px 0 16px;
            border: 1px solid var(--line);
            border-radius: 999px;
            background: rgba(255, 255, 255, .06);
            transition: border-color .25s ease, background .25s ease;
        }

        .header-search:focus-within {
            border-color: rgba(62, 123, 250, .65);
            background: rgba(255, 255, 255, .09);
        }

        .header-search i {
            color: var(--muted);
            font-size: 13px;
        }

        .header-search input {
            width: 138px;
            border: 0;
            padding: 8px 0;
            background: transparent;
            color: var(--text);
            font-size: 14px;
            outline: none;
        }

        .header-search input::placeholder {
            color: var(--muted);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            min-height: 44px;
            padding: .72rem 1.55rem;
            border: 0;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, #3E7BFA, #20B2C5);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .18), 0 0 26px rgba(52, 217, 208, .22);
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            transform: translateY(-1px);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22), 0 0 40px rgba(52, 217, 208, .30), 0 14px 28px rgba(8, 16, 40, .25);
            color: #fff;
        }

        .btn-ghost {
            color: var(--text);
            border: 1px solid var(--line);
            background: rgba(255, 255, 255, .07);
        }

        .btn-ghost:hover,
        .btn-ghost:focus-visible {
            border-color: rgba(155, 188, 255, .6);
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }

        .small-btn {
            min-height: 44px;
            padding: .55rem 1.05rem;
            border-radius: 999px;
            font-size: 14px;
            white-space: nowrap;
        }

        .nav-toggle {
            display: none;
        }

        .nav-check {
            position: absolute;
            width: 0;
            height: 0;
            opacity: 0;
            pointer-events: none;
        }

        .hero-category {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: 150px 0 96px;
            background:
                linear-gradient(180deg, rgba(15, 23, 40, .82) 0%, rgba(15, 23, 40, .72) 44%, rgba(15, 23, 40, .96) 100%),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
        }

        .hero-category .grid-container {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 7px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .16);
            background: rgba(255, 255, 255, .06);
            color: var(--sub);
            font-size: 14px;
            font-weight: 500;
            letter-spacing: .5px;
        }

        .hero-eyebrow i {
            color: var(--cyan);
        }

        .hero-title {
            max-width: 13em;
            margin: 24px 0 20px;
            font-size: clamp(42px, 6vw, 62px);
            line-height: 1.16;
            letter-spacing: .5px;
        }

        .hero-sub {
            max-width: 56ch;
            margin: 0 0 30px;
            color: var(--sub);
            font-size: 17px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-card {
            position: relative;
            margin-left: auto;
            max-width: 440px;
            padding: 22px;
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .075);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow);
        }

        .hero-card-img {
            border-radius: 18px;
            overflow: hidden;
            margin-bottom: 18px;
            border: 1px solid rgba(255, 255, 255, .08);
        }

        .hero-card-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .hero-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .hero-card ul li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            color: #D6E2FA;
            font-size: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
        }

        .hero-card ul li:last-child {
            border-bottom: 0;
        }

        .hero-card ul li b {
            color: var(--cyan);
            font-weight: 700;
        }

        .hero-card-note {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, .09);
            color: var(--muted);
            font-size: 13px;
        }

        .band {
            position: relative;
            padding: 88px 0;
        }

        .band-soft {
            background: rgba(255, 255, 255, .025);
            border-top: 1px solid rgba(255, 255, 255, .05);
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            color: #8DE0E0;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
        }

        .eyebrow::before {
            content: "";
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--blue), var(--cyan));
        }

        .section-title {
            margin-bottom: 18px;
            font-size: clamp(28px, 4vw, 38px);
            line-height: 1.3;
        }

        .section-lead {
            max-width: 68ch;
            color: var(--sub);
            font-size: 16px;
            line-height: 1.9;
        }

        .value-card {
            height: 100%;
            padding: 26px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .045);
            transition: border-color .3s ease, transform .3s ease, background .3s ease;
        }

        .value-card:hover {
            border-color: rgba(93, 150, 255, .35);
            background: rgba(255, 255, 255, .07);
            transform: translateY(-3px);
        }

        .value-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            margin-bottom: 16px;
            border-radius: 14px;
            color: var(--cyan);
            background: rgba(52, 217, 208, .12);
            border: 1px solid rgba(52, 217, 208, .22);
            font-size: 18px;
        }

        .value-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .value-card p {
            color: var(--sub);
            font-size: 14px;
            margin: 0;
        }

        .catalog-section {
            padding: 92px 0;
        }

        .catalog-list {
            display: grid;
            gap: 16px;
        }

        .catalog-row {
            display: flex;
            align-items: center;
            gap: 22px;
            width: 100%;
            padding: 24px 26px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .04);
            transition: border-color .3s ease, transform .3s ease, background .3s ease;
        }

        .catalog-row:hover {
            transform: translateY(-2px);
            border-color: var(--line-strong);
            background: rgba(255, 255, 255, .07);
        }

        .catalog-num {
            font-size: 28px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(62, 123, 250, .7);
            line-height: 1;
            min-width: 76px;
        }

        .catalog-body {
            flex: 1;
        }

        .catalog-body strong {
            display: block;
            font-size: 19px;
            color: #F4F7FF;
            margin-bottom: 4px;
        }

        .catalog-body span {
            display: block;
            color: var(--sub);
            font-size: 14px;
        }

        .catalog-arrow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .13);
            color: var(--muted);
            transition: all .3s ease;
        }

        .catalog-row:hover .catalog-arrow {
            background: var(--blue);
            color: #fff;
            border-color: var(--blue);
            transform: translateX(3px);
        }

        .service-section {
            padding: 96px 0;
            border-top: 1px solid rgba(255, 255, 255, .05);
            background:
                radial-gradient(600px 360px at 15% 35%, rgba(62, 123, 250, .08), transparent 60%),
                radial-gradient(500px 360px at 92% 80%, rgba(52, 217, 208, .06), transparent 60%);
        }

        .service-card {
            height: 100%;
            padding: 30px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .05);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
            transition: border-color .3s ease, transform .3s ease;
        }

        .service-card:hover {
            transform: translateY(-3px);
            border-color: rgba(93, 150, 255, .4);
        }

        .service-card.primary-card {
            background:
                linear-gradient(145deg, rgba(62, 123, 250, .12), rgba(255, 255, 255, .05)),
                rgba(255, 255, 255, .03);
        }

        .service-card .card-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border: 1px solid rgba(52, 217, 208, .22);
            border-radius: 999px;
            background: rgba(52, 217, 208, .08);
            color: #8DE0E0;
            font-size: 13px;
            font-weight: 600;
        }

        .service-card h3 {
            margin-top: 20px;
            font-size: 22px;
        }

        .service-card p {
            color: var(--sub);
            margin-bottom: 18px;
            font-size: 14px;
        }

        .service-list li {
            position: relative;
            padding: 7px 0 7px 26px;
            color: #C9D7F0;
            font-size: 14px;
            border-bottom: 1px dashed rgba(255, 255, 255, .07);
        }

        .service-list li:last-child {
            border-bottom: 0;
        }

        .service-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 600;
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--cyan);
            font-size: 13px;
        }

        .scene-section {
            padding: 96px 0;
        }

        .scene-card {
            height: 100%;
            background: rgba(255, 255, 255, .045);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 28px;
        }

        .scene-card .scene-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 16px;
            background: rgba(62, 123, 250, .13);
            border: 1px solid rgba(62, 123, 250, .2);
            color: var(--blue);
            font-size: 18px;
        }

        .scene-card h3 {
            margin-top: 22px;
            font-size: 18px;
        }

        .scene-card p {
            color: var(--sub);
            font-size: 14px;
            margin-bottom: 0;
        }

        .process-section {
            padding: 96px 0;
            border-top: 1px solid rgba(255, 255, 255, .05);
            background: var(--bg2);
            position: relative;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .process-step {
            position: relative;
            padding: 30px 24px 26px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .045);
            border: 1px solid var(--line);
            height: 100%;
        }

        .process-step .step-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 13px;
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--blue), var(--cyan));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            box-shadow: 0 0 22px rgba(62, 123, 250, .28);
        }

        .process-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--sub);
            font-size: 14px;
            margin: 0;
        }

        .faq-section {
            padding: 96px 0;
            background: rgba(255, 255, 255, .025);
            border-top: 1px solid rgba(255, 255, 255, .05);
            border-bottom: 1px solid rgba(255, 255, 255, .05);
        }

        .faq-list {
            display: grid;
            gap: 14px;
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: rgba(255, 255, 255, .05);
            overflow: hidden;
            transition: border-color .3s ease, background .3s ease;
        }

        .faq-item.open {
            border-color: rgba(62, 123, 250, .4);
            background: rgba(255, 255, 255, .075);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            width: 100%;
            padding: 22px 26px;
            background: transparent;
            border: 0;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            min-height: 58px;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, .04);
        }

        .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid var(--line);
            font-size: 14px;
            color: var(--cyan);
            transition: transform .3s ease, background .3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(52, 217, 208, .12);
            border-color: rgba(52, 217, 208, .35);
        }

        .faq-answer {
            max-height: 0;
            opacity: 0;
            overflow: hidden;
            transition: max-height .35s ease, opacity .35s ease, padding .35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 420px;
            opacity: 1;
            padding: 0 26px 24px;
        }

        .faq-answer p {
            color: var(--sub);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
        }

        .cta-zone {
            position: relative;
            padding: 100px 0;
            overflow: hidden;
            background:
                radial-gradient(680px 420px at 18% 50%, rgba(62, 123, 250, .16), transparent 60%),
                radial-gradient(620px 400px at 88% 30%, rgba(52, 217, 208, .10), transparent 60%);
        }

        .cta-inner {
            position: relative;
            z-index: 3;
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 28px;
            padding: clamp(32px, 5vw, 62px);
            background: rgba(255, 255, 255, .055);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            text-align: center;
        }

        .cta-inner h2 {
            font-size: clamp(26px, 3.4vw, 38px);
            margin-bottom: 12px;
        }

        .cta-inner p {
            max-width: 640px;
            margin: 0 auto 30px;
            color: var(--sub);
            font-size: 16px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }

        .btn-favorite.is-liked {
            background: var(--gold);
            color: #241900;
            border-color: var(--gold);
            box-shadow: 0 0 28px rgba(246, 180, 75, .25);
        }

        .inline-status {
            min-height: 24px;
            margin-top: 18px;
            color: var(--green);
            font-size: 14px;
        }

        .site-footer {
            position: relative;
            background: #0C1322;
            border-top: 1px solid rgba(255, 255, 255, .07);
            padding: 70px 0 30px;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, transparent, rgba(62, 123, 250, .55), rgba(52, 217, 208, .5), transparent);
        }

        .foot-grid {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr 1.1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .foot-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .foot-brand .brand-mark {
            width: 38px;
            height: 38px;
            font-size: 14px;
            border-radius: 12px;
        }

        .foot-desc {
            color: #8FA1C2;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .site-footer h4 {
            font-size: 16px;
            margin-bottom: 16px;
            color: #CBD6F2;
        }

        .site-footer ul li {
            margin-bottom: 10px;
        }

        .site-footer ul li a {
            color: #8FA1C2;
            font-size: 14px;
            line-height: 1.7;
        }

        .site-footer ul li a:hover {
            color: var(--cyan);
        }

        .foot-note {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 28px;
            color: #7689AD;
            font-size: 13px;
        }

        @media (max-width: 1199px) {
            .grid-container {
                padding-left: 26px;
                padding-right: 26px;
            }

            .brand {
                margin-right: 16px;
            }

            .header-search input {
                width: 100px;
            }

            .hero-title {
                font-size: 44px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .foot-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 1025px) {
            .nav-check,
            .nav-toggle {
                display: none;
            }
        }

        @media (max-width: 1024px) {
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 44px;
                height: 44px;
                margin-left: auto;
                border-radius: 12px;
                border: 1px solid var(--line);
                color: var(--text);
                background: rgba(255, 255, 255, .06);
                cursor: pointer;
            }

            .nav-actions {
                margin-left: 8px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                padding: 16px 20px;
                background: rgba(15, 23, 40, .97);
                border: 1px solid rgba(255, 255, 255, .1);
                border-radius: 18px;
                backdrop-filter: blur(20px) saturate(130%);
                -webkit-backdrop-filter: blur(20px) saturate(130%);
                box-shadow: 0 18px 45px rgba(8, 16, 40, .4);
            }

            .nav-links a {
                justify-content: center;
                min-height: 48px;
            }

            .nav-links a.active::after {
                display: none;
            }

            .nav-check:checked~.nav-links {
                display: flex;
            }

            .nav-check:checked~.nav-toggle {
                border-color: rgba(62, 123, 250, .5);
            }

            .hero-category {
                min-height: auto;
                padding: 140px 0 84px;
            }

            .hero-title {
                max-width: 12em;
                font-size: 42px;
            }

            .hero-visual {
                margin-top: 32px;
            }

            .hero-card {
                max-width: 100%;
            }

            .catalog-row {
                padding: 20px 18px;
            }

            .grid-container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (max-width: 900px) {
            .header-search {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .grid-container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .navbar {
                min-height: 72px;
            }

            .brand {
                margin-right: 0;
                margin-left: 0;
            }

            .brand-name {
                font-size: 18px;
            }

            .brand-mark {
                width: 38px;
                height: 38px;
            }

            .nav-actions .btn-ghost {
                display: none;
            }

            .hero-category {
                padding-top: 118px;
            }

            .hero-title {
                font-size: 34px;
                line-height: 1.25;
            }

            .hero-sub {
                font-size: 15px;
            }

            .hero-actions .btn {
                width: 100%;
                margin-bottom: 4px;
            }

            .band,
            .catalog-section,
            .service-section,
            .scene-section,
            .process-section,
            .faq-section,
            .cta-zone {
                padding: 62px 0;
            }

            .section-lead {
                font-size: 15px;
            }

            .catalog-num {
                min-width: 56px;
                font-size: 22px;
            }

            .catalog-arrow {
                display: none;
            }

            .catalog-body strong {
                font-size: 17px;
            }

            .service-card,
            .value-card,
            .scene-card,
            .process-step {
                padding: 22px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .process-section .section-head,
            .service-section .section-head,
            .catalog-section .section-head {
                margin-bottom: 28px;
            }

            .faq-question {
                padding: 18px 18px;
                font-size: 15px;
            }

            .faq-item.open .faq-answer {
                padding: 0 18px 20px;
            }

            .cta-inner {
                border-radius: 20px;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .foot-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 36px;
            }

            .foot-note {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 420px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-name {
                font-size: 17px;
            }

            .nav-links {
                left: -6px;
                right: -6px;
            }

            .hero-card {
                padding: 16px;
            }
        }

        :focus-visible {
            outline: 3px solid rgba(62, 123, 250, .7);
            outline-offset: 2px;
            border-radius: 6px;
        }