/* roulang page: index */
:root {
            --color-primary: #0d1b2a;
            --color-secondary: #1b2838;
            --color-accent: #d4a574;
            --color-accent-light: #f0d5b8;
            --color-bg: #ffffff;
            --color-bg-alt: #f7f8fa;
            --color-dark-bg: #0b1524;
            --color-text: #1c2b3a;
            --color-text-weak: #6c7a89;
            --color-border: #e8ecf0;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, .05);
            --shadow-md: 0 12px 36px rgba(0, 0, 0, .08);
            --shadow-lg: 0 24px 64px rgba(0, 0, 0, .10);
            --container: 1200px;
            --section-space: 88px;
            --transition: .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input {
            font-family: inherit;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }

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

        .nav-item {
            position: relative;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 999px;
            transition: all var(--transition);
        }

        .nav-item:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }

        .nav-item.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 20px;
            right: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-bg-alt);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            color: var(--color-text);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            isolation: isolate;
            padding: 80px 0;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, .78) 0%, rgba(13, 27, 42, .55) 55%, rgba(13, 27, 42, .75) 100%);
            z-index: -1;
        }

        .hero-content {
            max-width: 820px;
            padding: 0 24px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .25);
            background: rgba(255, 255, 255, .1);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }

        .hero-title {
            font-size: clamp(40px, 6vw, 68px);
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            letter-spacing: 2px;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, .25);
        }

        .hero-subtitle {
            font-size: clamp(16px, 2vw, 20px);
            color: rgba(255, 255, 255, .82);
            line-height: 1.8;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #0d1b2a;
            box-shadow: 0 8px 24px rgba(212, 165, 116, .35);
        }

        .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(212, 165, 116, .45);
        }

        .btn-outline {
            background: rgba(255, 255, 255, .08);
            color: #fff;
            border-color: rgba(255, 255, 255, .4);
            backdrop-filter: blur(8px);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .7);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            flex-wrap: wrap;
        }

        .hero-stat {
            text-align: center;
            color: rgba(255, 255, 255, .9);
        }

        .hero-stat-num {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
        }

        .hero-stat-label {
            font-size: 13px;
            opacity: .75;
            margin-top: 4px;
            letter-spacing: 1px;
        }

        /* ===== Sections common ===== */
        .section {
            padding: var(--section-space) 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-dark {
            background: var(--color-dark-bg);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-primary);
            margin-bottom: 14px;
        }

        .section-dark .section-head h2 {
            color: #fff;
        }

        .section-head p {
            color: var(--color-text-weak);
            font-size: 16px;
            line-height: 1.7;
        }

        .section-dark .section-head p {
            color: rgba(255, 255, 255, .6);
        }

        /* ===== Features ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            transition: all var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(212, 165, 116, .4);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(212, 165, 116, .18), rgba(212, 165, 116, .1));
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin: 0 auto 20px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* ===== Categories ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-dark-bg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .category-card img {
            width: 100%;
            height: 230px;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .category-card:hover img {
            transform: scale(1.05);
        }

        .category-card-body {
            padding: 26px 24px;
            background: #fff;
            border: 1px solid var(--color-border);
            border-top: none;
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .category-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            transition: gap var(--transition);
        }

        .card-link:hover {
            gap: 12px;
        }

        .card-link i {
            font-size: 13px;
        }

        /* ===== Latest posts ===== */
        .post-list {
            max-width: 880px;
            margin: 0 auto;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .post-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 22px 28px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition);
        }

        .post-item:last-child {
            border-bottom: none;
        }

        .post-item:hover {
            background: var(--color-bg-alt);
        }

        .post-badge {
            flex-shrink: 0;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(212, 165, 116, .15);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
        }

        .post-title {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .post-title a:hover {
            color: var(--color-accent);
        }

        .post-date {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--color-text-weak);
            white-space: nowrap;
        }

        .empty-tip {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-weak);
            font-size: 15px;
        }

        /* ===== Rank ===== */
        .rank-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .rank-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            display: flex;
            align-items: center;
            gap: 18px;
            transition: all var(--transition);
        }

        .rank-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }

        .rank-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--color-accent);
            width: 36px;
            text-align: center;
            flex-shrink: 0;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .rank-bar {
            height: 6px;
            border-radius: 6px;
            background: var(--color-bg-alt);
            overflow: hidden;
        }

        .rank-bar-fill {
            height: 100%;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
            transition: width 1s ease;
        }

        .rank-hot {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--color-text-weak);
            background: var(--color-bg-alt);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .rank-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .rank-cover img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        /* ===== Chapter grid ===== */
        .chapter-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .chapter-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .chapter-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .chapter-cover {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

        .chapter-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .chapter-cover .chapter-label {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(13, 27, 42, .8);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
        }

        .chapter-body {
            padding: 20px;
        }

        .chapter-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .chapter-body p {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .chapter-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
            font-size: 13px;
            color: var(--color-text-weak);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .stat-card {
            text-align: center;
            padding: 40px 24px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .12);
            transition: all var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            letter-spacing: 1px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            list-style: none;
            gap: 16px;
        }

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

        .faq-item summary i {
            color: var(--color-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary i {
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat fixed;
            isolation: isolate;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, .85), rgba(13, 27, 42, .7));
            z-index: -1;
        }

        .cta-content {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 36px;
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0b1524;
            color: rgba(255, 255, 255, .65);
            padding: 72px 0 36px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 28px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ===== Focus visible ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(212, 165, 116, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --section-space: 72px;
            }

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

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

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

            .rank-wrapper {
                grid-template-columns: 1fr;
            }

            .rank-cover {
                display: none;
            }

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

        @media (max-width: 768px) {
            :root {
                --section-space: 56px;
                --container: 100%;
            }

            .container {
                padding: 0 20px;
            }

            .header-inner {
                height: 64px;
            }

            .nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                display: none;
                gap: 4px;
            }

            .nav.open {
                display: flex;
            }

            .nav-item {
                padding: 12px 16px;
                border-radius: 12px;
            }

            .nav-item.active::after {
                display: none;
            }

            .nav-item.active {
                background: rgba(212, 165, 116, .12);
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                min-height: 70vh;
                padding: 60px 0;
            }

            .hero-stats {
                gap: 24px;
            }

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

            .post-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 18px 20px;
            }

            .post-title {
                white-space: normal;
            }

            .post-date {
                font-size: 12px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-num {
                font-size: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-actions .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .rank-item {
                padding: 16px;
                gap: 12px;
                flex-wrap: wrap;
            }

            .rank-hot {
                display: none;
            }

            .faq-item summary {
                padding: 18px 20px;
                font-size: 15px;
            }

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

/* roulang page: category1 */
:root{
  --primary:#2563eb;
  --primary-dark:#1e40af;
  --primary-light:#eff6ff;
  --accent:#f59e0b;
  --accent-light:#fef3c7;
  --bg:#f8fafc;
  --bg-white:#ffffff;
  --text:#0f172a;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --shadow:0 8px 30px rgba(15,23,42,.07);
  --shadow-lg:0 20px 50px rgba(15,23,42,.1);
  --max-w:1200px;
  --header-h:72px;
  --transition:.3s ease;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);height:var(--header-h)}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--text);letter-spacing:.5px}
.logo-dot{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.15);flex-shrink:0}
.nav{display:flex;align-items:center;gap:8px}
.nav-item{position:relative;padding:8px 16px;font-size:15px;font-weight:500;color:var(--text-weak);border-radius:999px;transition:all var(--transition)}
.nav-item:hover{color:var(--primary);background:var(--primary-light)}
.nav-item.active{color:var(--primary);font-weight:600}
.nav-item.active::after{content:'';position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:20px;height:3px;border-radius:3px;background:var(--primary)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--text);cursor:pointer;padding:6px 10px;border-radius:8px}
.nav-toggle:hover{background:var(--bg);color:var(--primary)}

/* Hero */
.page-hero{position:relative;padding:110px 0 90px;background:linear-gradient(135deg,rgba(15,23,42,.82),rgba(37,99,235,.75)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;text-align:center}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 20%,rgba(245,158,11,.25),transparent)}
.page-hero .container{position:relative;z-index:2}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 18px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);font-size:14px;font-weight:600;letter-spacing:1px;margin-bottom:20px}
.page-hero h1{font-size:44px;line-height:1.2;font-weight:800;margin-bottom:18px;letter-spacing:1px}
.page-hero p{font-size:18px;max-width:640px;margin:0 auto;color:rgba(255,255,255,.82);line-height:1.8}
.hero-breadcrumb{margin-top:26px;font-size:14px;color:rgba(255,255,255,.7)}
.hero-breadcrumb a{color:rgba(255,255,255,.9);font-weight:600}
.hero-breadcrumb a:hover{color:var(--accent)}

/* Section common */
.section{padding:90px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-eyebrow{display:inline-block;padding:4px 14px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:16px}
.section-head h2{font-size:34px;line-height:1.3;font-weight:800;letter-spacing:.5px;margin-bottom:12px}
.section-head p{color:var(--text-weak);font-size:17px;line-height:1.7}

/* Overview */
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.overview-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.overview-media img{width:100%;height:480px;object-fit:cover;transition:transform .6s ease}
.overview-media:hover img{transform:scale(1.03)}
.overview-media::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(15,23,42,.35))}
.overview-content h2{font-size:32px;font-weight:800;margin-bottom:16px;line-height:1.35}
.overview-content p{color:var(--text-weak);font-size:16px;margin-bottom:20px}
.overview-list{display:flex;flex-direction:column;gap:14px;margin:24px 0 32px}
.overview-list li{display:flex;align-items:flex-start;gap:12px;padding:14px 18px;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);transition:all var(--transition)}
.overview-list li:hover{border-color:var(--primary);transform:translateX(6px)}
.overview-list i{color:var(--primary);font-size:18px;margin-top:3px}
.overview-list strong{font-weight:700}
.overview-list span{display:block;color:var(--text-weak);font-size:14px;line-height:1.6}

/* Features */
.features{background:var(--bg-white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:36px 30px;text-align:center;transition:all var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent;background:var(--bg-white)}
.feature-icon{width:64px;height:64px;border-radius:18px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 20px;transition:all var(--transition)}
.feature-card:hover .feature-icon{background:var(--primary);color:#fff}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-weak);font-size:15px;color:var(--text-weak)}

/* Steps */
.steps{position:relative}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:20px}
.step-item{position:relative;text-align:center;padding:0 20px}
.step-item::after{content:'';position:absolute;top:36px;left:60%;width:80%;height:2px;background:linear-gradient(90deg,var(--primary),var(--primary-light));z-index:0}
.step-item:last-child::after{display:none}
.step-num{position:relative;z-index:2;width:72px;height:72px;border-radius:50%;background:var(--bg-white);border:2px solid var(--primary);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;margin:0 auto 20px;box-shadow:0 0 0 8px rgba(37,99,235,.08);transition:all var(--transition)}
.step-item:hover .step-num{background:var(--primary);color:#fff;box-shadow:0 0 0 12px rgba(37,99,235,.14)}
.step-item h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step-item p{color:var(--text-weak);font-size:14px;line-height:1.7;padding:0 8px}

/* Stats */
.stats{background:linear-gradient(135deg,#0f172a,#1e3a8a);color:#fff;padding:80px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stat-num{font-size:44px;font-weight:800;letter-spacing:-1px;margin-bottom:4px;background:linear-gradient(90deg,#fff,#93c5fd);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:15px;color:rgba(255,255,255,.75);letter-spacing:1px}

/* Security */
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.security-content h2{font-size:32px;font-weight:800;margin-bottom:20px;line-height:1.3}
.security-content p{color:var(--text-weak);margin-bottom:24px}
.security-list{display:grid;gap:16px}
.security-list li{display:flex;gap:14px;align-items:flex-start;padding:18px 20px;background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius);transition:all var(--transition)}
.security-list li:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.security-list i{color:var(--primary);font-size:20px;margin-top:2px}
.security-list strong{display:block;font-size:16px;margin-bottom:4px}
.security-list span{font-size:14px;color:var(--text-weak);line-height:1.6}
.security-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.security-media img{width:100%;height:520px;object-fit:cover}
.security-media::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(37,99,235,.25),transparent 60%);z-index:1}

/* FAQ */
.faq{background:var(--bg-white);border-top:1px solid var(--border)}
.faq-wrap{max-width:760px;margin:0 auto}
.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:all var(--transition)}
.faq-item:hover{border-color:var(--primary)}
.faq-item summary{list-style:none;cursor:pointer;padding:22px 28px;font-weight:600;font-size:17px;display:flex;align-items:center;gap:16px;transition:color var(--transition)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;margin-left:auto;color:var(--primary);transition:transform var(--transition);font-size:14px}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item[open] summary{color:var(--primary)}
.faq-item p{padding:0 28px 22px;color:var(--text-weak);font-size:15px;line-height:1.8}

/* CTA */
.cta{padding:100px 0;position:relative;background:linear-gradient(135deg,rgba(37,99,235,.95),rgba(30,64,175,.95)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;text-align:center}
.cta h2{font-size:36px;font-weight:800;margin-bottom:16px}
.cta p{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:36px;max-width:560px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 34px;border-radius:999px;font-size:16px;font-weight:700;border:none;cursor:pointer;transition:all var(--transition)}
.btn-primary{background:#fff;color:var(--primary)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,0,0,.18)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-outline:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-3px)}

/* Footer */
.site-footer{background:#0f172a;color:#94a3b8;padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:56px;padding-bottom:50px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .logo{color:#fff;font-size:20px}
.footer-brand p{margin-top:18px;font-size:15px;line-height:1.8;color:#94a3b8}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:28px;height:3px;border-radius:3px;background:var(--primary)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#94a3b8;font-size:15px;transition:all var(--transition)}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-col li{font-size:15px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:24px 0;font-size:14px;color:#64748b}
.footer-bottom span:last-child{letter-spacing:1px}

/* Responsive */
@media (max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:30px 0}
  .step-item::after{display:none}
  .overview-grid,.security-grid{grid-template-columns:1fr;gap:40px}
  .overview-media img,.security-media img{height:360px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .site-header .nav{position:fixed;top:var(--header-h);left:0;right:0;background:var(--bg-white);flex-direction:column;padding:20px 24px;gap:6px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);display:flex;transform:translateY(-120%);opacity:0;visibility:hidden;transition:all .4s ease;z-index:99}
  .site-header .nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-item{width:100%;padding:12px 18px;text-align:left;border-radius:10px}
  .nav-item.active::after{display:none}
  .nav-item.active{background:var(--primary-light)}
  .nav-toggle{display:block}
  .page-hero{padding:70px 0 60px}
  .page-hero h1{font-size:32px}
  .section{padding:70px 0}
  .section-head h2{font-size:28px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .page-hero p{font-size:15px}
  .features-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .overview-media img,.security-media img{height:260px}
  .stats-grid{grid-template-columns:1fr}
  .section-head h2{font-size:24px}
  .cta h2{font-size:28px}
  .cta-btns{flex-direction:column;align-items:center}
  .btn{width:100%;justify-content:center}
}

/* roulang page: article */
:root {
        --primary: #0f2a43;
        --primary-light: #1a3a5c;
        --primary-dark: #081826;
        --accent: #d4a86a;
        --accent-light: #e8c894;
        --accent-dark: #b8894d;
        --bg: #f5f6f8;
        --bg-white: #ffffff;
        --bg-soft: #eef1f5;
        --text: #1e293d;
        --text-light: #64748b;
        --border: #e2e8f0;
        --radius: 14px;
        --radius-sm: 8px;
        --shadow-sm: 0 2px 8px rgba(15, 42, 67, 0.06);
        --shadow-md: 0 8px 24px rgba(15, 42, 67, 0.08);
        --shadow-lg: 0 16px 40px rgba(15, 42, 67, 0.12);
        --space-xs: 8px;
        --space-sm: 16px;
        --space-md: 24px;
        --space-lg: 40px;
        --space-xl: 64px;
        --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    }

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

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

    body {
        font-family: var(--font);
        font-size: 16px;
        line-height: 1.75;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
    }

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

    a {
        color: inherit;
        text-decoration: none;
        transition: color 0.2s ease;
    }

    button {
        font-family: var(--font);
        cursor: pointer;
        border: none;
        background: none;
    }

    input,
    textarea {
        font-family: var(--font);
    }

    .container {
        max-width: 1240px;
        margin: 0 auto;
        padding: 0 var(--space-md);
    }

    .site-header {
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: var(--space-md);
    }

    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--primary);
        letter-spacing: 0.03em;
        white-space: nowrap;
    }

    .logo-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 0 4px rgba(212, 168, 106, 0.2);
        flex-shrink: 0;
    }

    .nav {
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .nav-item {
        padding: 8px 16px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-light);
        border-radius: 50px;
        position: relative;
        transition: all 0.25s ease;
    }

    .nav-item:hover {
        color: var(--primary);
        background: var(--bg-soft);
    }

    .nav-item.active {
        color: var(--primary);
        font-weight: 600;
    }

    .nav-item.active::after {
        content: "";
        position: absolute;
        left: 16px;
        right: 16px;
        bottom: 2px;
        height: 2px;
        border-radius: 2px;
        background: var(--accent);
    }

    .nav-toggle {
        display: none;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: var(--primary);
        border-radius: var(--radius-sm);
        border: 1px solid var(--border);
        background: var(--bg-white);
        transition: all 0.2s ease;
    }

    .nav-toggle:hover {
        background: var(--bg-soft);
        border-color: var(--accent);
    }

    .page-banner {
        position: relative;
        padding: 80px 0 64px;
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }

    .page-banner::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(8, 24, 38, 0.88) 0%, rgba(15, 42, 67, 0.72) 55%, rgba(212, 168, 106, 0.25) 100%);
    }

    .banner-content {
        position: relative;
        z-index: 2;
        max-width: 860px;
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.72);
        margin-bottom: 20px;
    }

    .breadcrumb a {
        color: rgba(255, 255, 255, 0.85);
        transition: color 0.2s;
    }

    .breadcrumb a:hover {
        color: var(--accent-light);
    }

    .breadcrumb .sep {
        color: rgba(255, 255, 255, 0.4);
    }

    .banner-badge {
        display: inline-block;
        padding: 6px 16px;
        background: var(--accent);
        color: var(--primary-dark);
        font-size: 13px;
        font-weight: 600;
        border-radius: 50px;
        letter-spacing: 0.06em;
        margin-bottom: 18px;
        box-shadow: 0 4px 16px rgba(212, 168, 106, 0.3);
    }

    .banner-content h1 {
        font-size: 40px;
        line-height: 1.3;
        font-weight: 800;
        color: #ffffff;
        margin-bottom: 16px;
        letter-spacing: -0.01em;
    }

    .banner-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        color: rgba(255, 255, 255, 0.78);
        font-size: 14px;
    }

    .banner-meta span {
        display: inline-flex;
        align-items: center;
        gap: 7px;
    }

    .banner-meta i {
        color: var(--accent-light);
    }

    .article-section {
        padding: var(--space-xl) 0;
        position: relative;
    }

    .article-section::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 80px;
        background: linear-gradient(to bottom, var(--bg), transparent);
        z-index: 0;
    }

    .article-grid {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 360px;
        gap: var(--space-lg);
        position: relative;
        z-index: 1;
    }

    .article-main {
        min-width: 0;
    }

    .article-paper {
        background: var(--bg-white);
        border-radius: var(--radius);
        box-shadow: var(--shadow-md);
        padding: 48px 52px;
        margin-bottom: var(--space-lg);
    }

    .article-head {
        margin-bottom: 32px;
        padding-bottom: 24px;
        border-bottom: 1px solid var(--border);
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 16px 24px;
    }

    .head-meta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-light);
    }

    .head-meta i {
        color: var(--accent);
    }

    .head-badge {
        display: inline-block;
        padding: 4px 14px;
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        border-radius: 50px;
        letter-spacing: 0.04em;
    }

    .heat-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 4px 12px;
        background: rgba(212, 168, 106, 0.12);
        color: var(--accent-dark);
        font-size: 13px;
        font-weight: 600;
        border-radius: 50px;
    }

    .heat-badge i {
        color: #e2574c;
    }

    .article-body {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text);
    }

    .article-body p {
        margin-bottom: 1.6em;
    }

    .article-body h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--primary);
        margin: 2em 0 0.9em;
        padding-bottom: 0.45em;
        border-bottom: 2px solid var(--accent);
        letter-spacing: -0.01em;
    }

    .article-body h3 {
        font-size: 21px;
        font-weight: 600;
        color: var(--primary);
        margin: 1.8em 0 0.8em;
    }

    .article-body h4 {
        font-size: 18px;
        font-weight: 600;
        color: var(--primary);
        margin: 1.6em 0 0.6em;
    }

    .article-body ul,
    .article-body ol {
        margin: 0 0 1.6em;
        padding-left: 1.5em;
    }

    .article-body li {
        margin-bottom: 0.5em;
    }

    .article-body ul li::marker {
        color: var(--accent);
    }

    .article-body ol li::marker {
        color: var(--accent);
        font-weight: 600;
    }

    .article-body blockquote {
        margin: 2em 0;
        padding: 18px 24px;
        border-left: 4px solid var(--accent);
        background: var(--bg-soft);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-light);
        font-size: 15px;
    }

    .article-body blockquote p {
        margin-bottom: 0.4em;
    }

    .article-body blockquote p:last-child {
        margin-bottom: 0;
    }

    .article-body img {
        border-radius: var(--radius);
        box-shadow: var(--shadow-md);
        margin: 2em auto;
    }

    .article-body a {
        color: var(--accent-dark);
        border-bottom: 1px dashed var(--accent);
    }

    .article-body a:hover {
        color: var(--primary);
        border-bottom-style: solid;
    }

    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 2em 0;
        font-size: 15px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }

    .article-body table th,
    .article-body table td {
        padding: 12px 16px;
        border: 1px solid var(--border);
        text-align: left;
    }

    .article-body table th {
        background: var(--primary);
        color: #fff;
        font-weight: 600;
        border-color: var(--primary);
    }

    .article-body table tr:nth-child(even) {
        background: var(--bg-soft);
    }

    .article-body code {
        background: var(--bg-soft);
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 2px 8px;
        font-size: 14px;
        color: var(--primary);
    }

    .article-body pre {
        background: var(--primary-dark);
        color: #e8e8e8;
        padding: 20px 24px;
        border-radius: var(--radius-sm);
        overflow-x: auto;
        margin: 2em 0;
        font-size: 14px;
        line-height: 1.7;
    }

    .article-body pre code {
        background: transparent;
        border: none;
        color: inherit;
        padding: 0;
    }

    .article-body hr {
        border: none;
        border-top: 1px solid var(--border);
        margin: 2.5em 0;
    }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 32px;
        padding-top: 24px;
        border-top: 1px solid var(--border);
    }

    .tag-label {
        font-size: 14px;
        color: var(--text-light);
        font-weight: 600;
        margin-right: 4px;
    }

    .tag-item {
        display: inline-block;
        padding: 6px 16px;
        background: var(--bg-soft);
        border: 1px solid var(--border);
        border-radius: 50px;
        font-size: 13px;
        color: var(--text);
        transition: all 0.25s ease;
    }

    .tag-item:hover {
        background: var(--accent);
        border-color: var(--accent);
        color: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(212, 168, 106, 0.25);
    }

    .article-footer-nav {
        display: flex;
        gap: 12px;
        margin-top: 32px;
        padding-top: 16px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 28px;
        border-radius: 50px;
        font-size: 15px;
        font-weight: 600;
        transition: all 0.3s ease;
        cursor: pointer;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: 0 4px 16px rgba(15, 42, 67, 0.25);
    }

    .btn-primary:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(15, 42, 67, 0.3);
    }

    .btn-outline {
        background: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(15, 42, 67, 0.18);
    }

    .btn-accent {
        background: var(--accent);
        color: var(--primary-dark);
        box-shadow: 0 4px 16px rgba(212, 168, 106, 0.3);
    }

    .btn-accent:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(212, 168, 106, 0.4);
    }

    .sidebar {
        display: flex;
        flex-direction: column;
        gap: var(--space-md);
        min-width: 0;
    }

    .side-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        box-shadow: var(--shadow-md);
        padding: 28px;
        border: 1px solid rgba(226, 232, 240, 0.5);
    }

    .side-title {
        font-size: 18px;
        font-weight: 700;
        color: var(--primary);
        margin-bottom: 20px;
        display: flex;
        align-items: center;
        gap: 10px;
        padding-bottom: 14px;
        border-bottom: 1px solid var(--border);
    }

    .side-title::before {
        content: "";
        width: 4px;
        height: 18px;
        background: var(--accent);
        border-radius: 2px;
    }

    .toc-list {
        display: flex;
        flex-direction: column;
        gap: 4px;
        max-height: 320px;
        overflow-y: auto;
    }

    .toc-item {
        display: block;
        padding: 8px 12px;
        font-size: 14px;
        color: var(--text-light);
        border-radius: var(--radius-sm);
        border-left: 2px solid transparent;
        transition: all 0.2s ease;
        line-height: 1.5;
    }

    .toc-item:hover {
        color: var(--primary);
        background: var(--bg-soft);
        border-left-color: var(--accent);
    }

    .toc-item.toc-sub {
        padding-left: 28px;
        font-size: 13px;
    }

    .latest-list {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .latest-item {
        display: flex;
        gap: 12px;
        padding: 10px;
        border-radius: var(--radius-sm);
        transition: background 0.2s ease;
        align-items: flex-start;
    }

    .latest-item:hover {
        background: var(--bg-soft);
    }

    .latest-index {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        border-radius: 8px;
        background: var(--bg-soft);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        font-weight: 700;
        color: var(--accent-dark);
    }

    .latest-item:hover .latest-index {
        background: var(--accent);
        color: var(--primary-dark);
    }

    .latest-title {
        font-size: 14px;
        line-height: 1.5;
        color: var(--text);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        transition: color 0.2s;
    }

    .latest-item:hover .latest-title {
        color: var(--accent-dark);
    }

    .latest-date {
        font-size: 12px;
        color: var(--text-light);
        margin-top: 3px;
    }

    .tip-card {
        background: linear-gradient(145deg, var(--primary) 0%, var(--primary-light) 100%);
        color: #fff;
        border: none;
        position: relative;
        overflow: hidden;
    }

    .tip-card::after {
        content: "";
        position: absolute;
        top: -40px;
        right: -40px;
        width: 120px;
        height: 120px;
        border-radius: 50%;
        background: rgba(212, 168, 106, 0.15);
    }

    .tip-card .side-title {
        color: #fff;
        border-bottom-color: rgba(255, 255, 255, 0.2);
    }

    .tip-card .side-title::before {
        background: var(--accent);
    }

    .tip-text {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255, 255, 255, 0.9);
        margin-bottom: 18px;
    }

    .tip-list {
        list-style: none;
        padding: 0;
    }

    .tip-list li {
        position: relative;
        padding-left: 22px;
        margin-bottom: 10px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.85);
    }

    .tip-list li::before {
        content: "\f058";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        left: 0;
        top: 1px;
        color: var(--accent);
        font-size: 14px;
    }

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

    .section-head {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 32px;
        gap: 20px;
    }

    .section-title {
        font-size: 30px;
        font-weight: 800;
        color: var(--primary);
        letter-spacing: -0.02em;
        position: relative;
        padding-left: 18px;
    }

    .section-title::before {
        content: "";
        position: absolute;
        left: 0;
        top: 4px;
        bottom: 4px;
        width: 5px;
        background: var(--accent);
        border-radius: 3px;
    }

    .section-sub {
        font-size: 15px;
        color: var(--text-light);
        margin-top: 6px;
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .rel-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        border: 1px solid rgba(226, 232, 240, 0.6);
        transition: all 0.35s ease;
        display: flex;
        flex-direction: column;
    }

    .rel-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: transparent;
    }

    .rel-thumb {
        position: relative;
        aspect-ratio: 16/10;
        overflow: hidden;
        background: var(--bg-soft);
    }

    .rel-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .rel-card:hover .rel-thumb img {
        transform: scale(1.05);
    }

    .rel-thumb::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(8, 24, 38, 0.25), transparent 60%);
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .rel-card:hover .rel-thumb::after {
        opacity: 1;
    }

    .rel-badge {
        position: absolute;
        top: 14px;
        left: 14px;
        z-index: 2;
        padding: 5px 14px;
        background: rgba(15, 42, 67, 0.85);
        backdrop-filter: blur(6px);
        color: #fff;
        font-size: 12px;
        font-weight: 600;
        border-radius: 50px;
        letter-spacing: 0.03em;
    }

    .rel-body {
        padding: 22px 24px 24px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .rel-body h3 {
        font-size: 17px;
        line-height: 1.55;
        font-weight: 600;
        color: var(--text);
        margin-bottom: 10px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        transition: color 0.2s;
    }

    .rel-card:hover .rel-body h3 {
        color: var(--accent-dark);
    }

    .rel-meta {
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 12px;
        color: var(--text-light);
        margin-top: auto;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }

    .rel-meta span {
        display: inline-flex;
        align-items: center;
        gap: 5px;
    }

    .rel-meta i {
        color: var(--accent);
        font-size: 11px;
    }

    .stats-section {
        padding: 70px 0;
        background: linear-gradient(145deg, var(--primary-dark) 0%, var(--primary) 100%);
        position: relative;
        overflow: hidden;
    }

    .stats-section::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        opacity: 0.08;
    }

    .stats-section .container {
        position: relative;
        z-index: 2;
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
    }

    .stat-item {
        text-align: center;
        padding: 24px 16px;
        border-radius: var(--radius);
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        transition: all 0.3s ease;
    }

    .stat-item:hover {
        background: rgba(255, 255, 255, 0.08);
        transform: translateY(-4px);
        border-color: rgba(212, 168, 106, 0.3);
    }

    .stat-num {
        font-size: 42px;
        font-weight: 800;
        color: var(--accent);
        line-height: 1.2;
        margin-bottom: 8px;
        font-variant-numeric: tabular-nums;
    }

    .stat-label {
        font-size: 15px;
        color: rgba(255, 255, 255, 0.8);
        font-weight: 500;
    }

    .faq-section {
        padding: var(--space-xl) 0;
        background: var(--bg);
    }

    .faq-grid {
        max-width: 880px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background: var(--bg-white);
        border-radius: var(--radius);
        border: 1px solid var(--border);
        padding: 22px 28px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .faq-item:hover {
        border-color: var(--accent);
        box-shadow: var(--shadow-sm);
    }

    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 16px;
        font-weight: 600;
        color: var(--text);
    }

    .faq-q i {
        color: var(--accent);
        font-size: 14px;
        transition: transform 0.3s ease;
        flex-shrink: 0;
    }

    .faq-item.open .faq-q i {
        transform: rotate(180deg);
    }

    .faq-a {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, margin-top 0.35s ease;
        font-size: 15px;
        color: var(--text-light);
        line-height: 1.8;
    }

    .faq-item.open .faq-a {
        max-height: 300px;
        margin-top: 14px;
    }

    .cta-section {
        padding: 70px 0;
        position: relative;
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }

    .cta-card {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        border-radius: 24px;
        padding: 56px 48px;
        text-align: center;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }

    .cta-card::before {
        content: "";
        position: absolute;
        top: -80px;
        right: -80px;
        width: 200px;
        height: 200px;
        border-radius: 50%;
        background: rgba(212, 168, 106, 0.2);
    }

    .cta-card::after {
        content: "";
        position: absolute;
        bottom: -60px;
        left: -60px;
        width: 150px;
        height: 150px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.06);
    }

    .cta-card h2 {
        font-size: 32px;
        font-weight: 800;
        color: #fff;
        margin-bottom: 14px;
        position: relative;
        z-index: 2;
        letter-spacing: -0.02em;
    }

    .cta-card p {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.8);
        max-width: 560px;
        margin: 0 auto 28px;
        position: relative;
        z-index: 2;
        line-height: 1.8;
    }

    .cta-btns {
        position: relative;
        z-index: 2;
        display: flex;
        gap: 14px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .btn-white {
        background: #fff;
        color: var(--primary);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }

    .btn-white:hover {
        background: var(--accent-light);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.12);
        color: #fff;
        border: 2px solid rgba(255, 255, 255, 0.6);
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.2);
        border-color: #fff;
        transform: translateY(-2px);
    }

    .not-found {
        text-align: center;
        padding: 60px 20px;
    }

    .not-found-icon {
        font-size: 56px;
        color: var(--accent);
        margin-bottom: 24px;
        display: inline-block;
        animation: pulse 2s ease infinite;
    }

    @keyframes pulse {
        0%,
        100% {
            transform: scale(1);
        }
        50% {
            transform: scale(1.05);
        }
    }

    .not-found h2 {
        font-size: 30px;
        color: var(--primary);
        margin-bottom: 12px;
    }

    .not-found p {
        color: var(--text-light);
        margin-bottom: 28px;
    }

    .site-footer {
        background: var(--primary-dark);
        color: rgba(255, 255, 255, 0.7);
        padding: 64px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .footer-brand .logo {
        color: #fff;
        font-size: 22px;
        margin-bottom: 16px;
    }

    .footer-brand .logo-dot {
        background: var(--accent);
        box-shadow: 0 0 0 4px rgba(212, 168, 106, 0.15);
    }

    .footer-brand p {
        font-size: 15px;
        line-height: 1.85;
        max-width: 320px;
        color: rgba(255, 255, 255, 0.6);
    }

    .footer-col h4 {
        color: #fff;
        font-size: 17px;
        font-weight: 600;
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px;
    }

    .footer-col h4::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 32px;
        height: 3px;
        background: var(--accent);
        border-radius: 2px;
    }

    .footer-col ul {
        list-style: none;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .footer-col ul li {
        font-size: 14px;
    }

    .footer-col ul li a {
        color: rgba(255, 255, 255, 0.65);
        transition: all 0.25s;
        display: inline-block;
        position: relative;
        padding-left: 0;
    }

    .footer-col ul li a:hover {
        color: var(--accent);
        transform: translateX(4px);
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 24px 0;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.4);
        flex-wrap: wrap;
        gap: 10px;
    }

    @media (max-width: 1024px) {
        .article-grid {
            grid-template-columns: 1fr;
        }

        .sidebar {
            flex-direction: row;
            flex-wrap: wrap;
            gap: var(--space-md);
        }

        .side-card {
            flex: 1 1 calc(50% - var(--space-md) / 2);
            min-width: 260px;
        }

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

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

    @media (max-width: 768px) {
        .container {
            padding: 0 20px;
        }

        .site-header .header-inner {
            height: 64px;
        }

        .nav {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: var(--bg-white);
            flex-direction: column;
            align-items: stretch;
            padding: 16px 20px 24px;
            gap: 4px;
            box-shadow: var(--shadow-lg);
            border-bottom: 1px solid var(--border);
            transform: translateY(-120%);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            border-radius: 0 0 var(--radius) var(--radius);
        }

        .nav.open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .nav-item {
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 16px;
        }

        .nav-item.active {
            background: var(--bg-soft);
        }

        .nav-item.active::after {
            display: none;
        }

        .nav-toggle {
            display: inline-flex;
        }

        .banner-content h1 {
            font-size: 30px;
        }

        .page-banner {
            padding: 56px 0 44px;
        }

        .article-paper {
            padding: 28px 22px;
        }

        .article-body {
            font-size: 15px;
        }

        .article-body h2 {
            font-size: 22px;
        }

        .article-body h3 {
            font-size: 18px;
        }

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

        .sidebar {
            flex-direction: column;
            gap: var(--space-sm);
        }

        .side-card {
            flex: 1 1 auto;
            min-width: 0;
        }

        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .stat-num {
            font-size: 32px;
        }

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

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

        .cta-card {
            padding: 40px 24px;
        }

        .cta-card h2 {
            font-size: 24px;
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .footer-brand {
            grid-column: 1 / -1;
        }

        .section-title {
            font-size: 24px;
        }

        .btn {
            padding: 10px 22px;
            font-size: 14px;
        }

        .article-footer-nav {
            flex-wrap: wrap;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .logo {
            font-size: 17px;
        }

        .banner-content h1 {
            font-size: 25px;
        }

        .banner-meta {
            gap: 12px;
            font-size: 13px;
        }

        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .stat-item {
            padding: 16px 12px;
        }

        .stat-num {
            font-size: 28px;
        }

        .stat-label {
            font-size: 12px;
        }

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

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }

        .footer-brand {
            grid-column: 1;
        }

        .footer-bottom {
            flex-direction: column;
            justify-content: center;
            text-align: center;
        }

        .article-head {
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .cta-card {
            padding: 36px 18px;
        }

        .cta-btns {
            flex-direction: column;
            align-items: stretch;
        }

        .cta-btns .btn {
            justify-content: center;
        }

        .section-head {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }

        .section-title {
            font-size: 22px;
            padding-left: 14px;
        }
    }

/* roulang page: category2 */
:root {
            --primary: #ff7a1a;
            --primary-light: #ffb347;
            --primary-bg: rgba(255, 122, 26, .12);
            --bg: #0b0f17;
            --bg-soft: #111827;
            --card: #151d29;
            --card-hover: #1a2436;
            --border: #1f2a3c;
            --text: #f2f4f8;
            --text-weak: #8a94a6;
            --text-mute: #5b6578;
            --gold: #f5c451;
            --green: #3ddc97;
            --red: #ff5252;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 20px 50px rgba(0, 0, 0, .35);
            --shadow-sm: 0 8px 24px rgba(0, 0, 0, .25);
            --transition: .3s ease;
            --container-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

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

        button {
            font: inherit;
            border: none;
            background: none;
            cursor: pointer;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 23, .85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .5px;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px rgba(255, 122, 26, .18);
            flex-shrink: 0;
        }

        .nav {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .nav-item {
            position: relative;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            border-radius: 999px;
            transition: color var(--transition), background var(--transition);
        }

        .nav-item:hover {
            color: var(--text);
            background: rgba(255, 255, 255, .04);
        }

        .nav-item.active {
            color: var(--text);
        }

        .nav-item.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 2px;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 18px;
            background: rgba(255, 255, 255, .03);
            transition: border-color var(--transition), background var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            background: var(--primary-bg);
        }

        main {
            overflow: hidden;
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 36px;
            line-height: 1.25;
            letter-spacing: .5px;
            font-weight: 800;
        }

        .section-head p {
            color: var(--text-weak);
            margin-top: 14px;
            font-size: 16px;
        }

        .page-hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 23, .93) 0%, rgba(11, 15, 23, .76) 50%, rgba(255, 122, 26, .28) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(255, 122, 26, .12);
            border: 1px solid rgba(255, 122, 26, .3);
            letter-spacing: 1px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero-content h1 {
            font-size: 48px;
            line-height: 1.18;
            margin: 22px 0 18px;
            font-weight: 800;
            letter-spacing: 1px;
        }

        .hero-content p {
            font-size: 17px;
            color: var(--text-weak);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 14px;
            margin-top: 32px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #141414;
            box-shadow: 0 8px 24px rgba(255, 122, 26, .3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(255, 122, 26, .4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 6px 20px rgba(255, 122, 26, .25);
        }

        .btn-ghost {
            border: 1px solid var(--border);
            color: var(--text);
            background: rgba(255, 255, 255, .04);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .08);
            border-color: rgba(255, 255, 255, .25);
            transform: translateY(-2px);
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .btn-dark {
            background: #141414;
            color: #fff;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
        }

        .btn-dark:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(0, 0, 0, .4);
        }

        .btn:focus-visible,
        .filter-tag:focus-visible,
        .nav-toggle:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 44px;
        }

        .filter-tag {
            padding: 8px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            background: var(--card);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .filter-tag:hover {
            color: var(--text);
            border-color: var(--primary);
            background: var(--primary-bg);
        }

        .filter-tag.active {
            color: #141414;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-color: transparent;
            font-weight: 600;
            box-shadow: 0 6px 20px rgba(255, 122, 26, .25);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .activity-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
            display: flex;
            flex-direction: column;
        }

        .activity-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(255, 122, 26, .35);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 3 / 4;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .activity-card:hover .card-cover img {
            transform: scale(1.05);
        }

        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 15, 23, .55), transparent 65%);
        }

        .hot-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: linear-gradient(135deg, #ff5252, #ff7a1a);
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 82, 82, .3);
            letter-spacing: .5px;
        }

        .status-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            z-index: 2;
            background: rgba(0, 0, 0, .55);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--green);
            border: 1px solid rgba(61, 220, 151, .3);
        }

        .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .card-body>p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
            margin-bottom: 18px;
            flex: 1;
        }

        .progress {
            height: 6px;
            background: rgba(255, 255, 255, .06);
            border-radius: 99px;
            overflow: hidden;
        }

        .progress-fill {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 99px;
        }

        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 16px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .card-meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: color var(--transition), transform var(--transition);
        }

        .card-link:hover {
            color: var(--primary-light);
        }

        .ranking-section {
            position: relative;
            background: url('/assets/images/backpic/back-3.png') center / cover;
            background-attachment: fixed;
        }

        .ranking-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 23, .93);
        }

        .ranking-section .container {
            position: relative;
            z-index: 2;
        }

        .ranking-list {
            max-width: 820px;
            margin: 0 auto;
            background: rgba(21, 29, 41, .8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 8px 28px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 8px;
            border-bottom: 1px solid var(--border);
        }

        .ranking-item:last-child {
            border-bottom: none;
        }

        .rank-num {
            width: 40px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-mute);
            text-align: center;
            font-style: italic;
            line-height: 1;
        }

        .rank-1 .rank-num {
            color: var(--gold);
        }

        .rank-2 .rank-num {
            color: #c0c4cc;
        }

        .rank-3 .rank-num {
            color: #cd8a5e;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-info h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 7px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-bar {
            height: 6px;
            max-width: 360px;
            background: rgba(255, 255, 255, .06);
            border-radius: 99px;
            overflow: hidden;
        }

        .rank-bar span {
            display: block;
            height: 100%;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
        }

        .rank-score {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-light);
            min-width: 48px;
            text-align: right;
        }

        .rank-trend {
            color: var(--green);
            font-size: 14px;
            width: 28px;
            text-align: right;
        }

        .rank-trend.down {
            color: var(--red);
        }

        .timeline {
            max-width: 780px;
            margin: 0 auto;
            position: relative;
            padding-left: 30px;
            border-left: 2px solid var(--border);
        }

        .timeline-item {
            position: relative;
            padding: 0 0 44px 32px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -9px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 5px rgba(255, 122, 26, .15);
        }

        .timeline-date {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary-light);
            background: var(--primary-bg);
            border: 1px solid rgba(255, 122, 26, .25);
            padding: 4px 16px;
            border-radius: 999px;
        }

        .timeline-date span {
            color: var(--text-weak);
            font-weight: 500;
            font-size: 13px;
        }

        .timeline-content {
            background: var(--card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 22px 24px;
            margin-top: 14px;
            transition: border-color var(--transition), transform var(--transition);
        }

        .timeline-content:hover {
            border-color: rgba(255, 122, 26, .3);
            transform: translateX(4px);
        }

        .timeline-content h4 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .timeline-content p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            position: relative;
            padding: 36px 24px 30px;
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            text-align: center;
            transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .step-item:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .step-num {
            font-size: 38px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--primary);
            line-height: 1;
            display: block;
            margin-bottom: 16px;
        }

        .step-item h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, .1);
        }

        .faq-item.open {
            border-color: rgba(255, 122, 26, .35);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .faq-question::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--text-weak);
            transition: transform .35s ease;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }

        .faq-answer p {
            padding: 0 24px 22px;
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
        }

        .cta-section {
            padding: 50px 0 96px;
        }

        .cta-inner {
            background: linear-gradient(135deg, rgba(255, 122, 26, .92), rgba(245, 196, 81, .92));
            border-radius: 28px;
            padding: 64px 48px;
            text-align: center;
            color: #141414;
            position: relative;
            overflow: hidden;
        }

        .cta-inner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, .12);
            border-radius: 50%;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
        }

        .cta-inner p {
            margin: 14px auto 30px;
            font-size: 16px;
            max-width: 520px;
            color: rgba(0, 0, 0, .75);
        }

        .cta-note {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-size: 13px;
            color: rgba(20, 20, 20, .7);
        }

        .cta-note i {
            font-size: 12px;
        }

        .site-footer {
            background: #0a0e15;
            border-top: 1px solid var(--border);
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo {
            font-size: 19px;
        }

        .footer-brand p {
            color: var(--text-weak);
            margin-top: 14px;
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-weak);
            transition: color var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--primary-light);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: var(--text-mute);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .section-head {
                margin-bottom: 40px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .page-hero {
                min-height: 420px;
                padding: 60px 20px;
            }

            .hero-content h1 {
                font-size: 34px;
            }

            .hero-content p {
                font-size: 15px;
            }

            .hero-btns {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }

            .btn {
                width: 100%;
                max-width: 300px;
            }

            .nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 23, .97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 28px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-16px);
                opacity: 0;
                visibility: hidden;
                transition: transform .3s ease, opacity .3s ease, visibility .3s ease;
                gap: 4px;
            }

            .nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-item {
                padding: 12px 16px;
                border-radius: 12px;
                text-align: center;
                font-size: 16px;
            }

            .nav-item.active::after {
                display: none;
            }

            .nav-item.active {
                background: var(--primary-bg);
                color: var(--primary-light);
            }

            .nav-toggle {
                display: flex;
            }

            .ranking-section {
                background-attachment: scroll;
            }

            .ranking-list {
                padding: 8px 16px;
            }

            .ranking-item {
                gap: 14px;
                padding: 16px 6px;
            }

            .rank-num {
                font-size: 18px;
                width: 30px;
            }

            .rank-score {
                font-size: 17px;
                min-width: 40px;
            }

            .timeline {
                padding-left: 20px;
            }

            .timeline-item {
                padding-left: 24px;
            }

            .cta-inner {
                padding: 44px 24px;
                border-radius: 22px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }

            .cta-inner p {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 17px;
            }

            .nav {
                top: 64px;
            }

            .card-grid,
            .step-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .card-cover {
                aspect-ratio: 4 / 3;
            }

            .page-hero {
                padding: 48px 16px;
                min-height: 380px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 5px 14px;
            }

            .filter-tag {
                padding: 7px 16px;
                font-size: 13px;
            }

            .timeline-content {
                padding: 18px;
            }

            .timeline-content h4 {
                font-size: 16px;
            }

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

            .faq-answer p {
                padding: 0 18px 18px;
            }

            .cta-section {
                padding: 40px 0 64px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #141a33;
            --primary-light: #252d52;
            --primary-soft: #eceef8;
            --accent: #f0b53e;
            --accent-dark: #d99a24;
            --accent-soft: #fdf3dd;
            --bg: #f7f8fc;
            --surface: #ffffff;
            --text: #1c1e2a;
            --text-weak: #6b7080;
            --border: #e5e7f0;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 10px 32px rgba(20, 26, 51, 0.07);
            --shadow-hover: 0 18px 44px rgba(20, 26, 51, 0.13);
            --space: 110px;
            --space-sm: 60px;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }

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

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

        ul {
            list-style: none;
        }

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
            transition: all .25s ease;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: .3px;
        }

        .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(240, 181, 62, 0.22);
            flex-shrink: 0;
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 38px;
        }

        .nav-item {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            padding: 28px 0 26px;
            letter-spacing: .5px;
            transition: color .25s ease;
        }

        .nav-item::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform .3s ease;
        }

        .nav-item:hover {
            color: var(--primary);
        }

        .nav-item:hover::after,
        .nav-item.active::after {
            transform: scaleX(1);
        }

        .nav-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 18px;
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 130px 0 120px;
            background: linear-gradient(135deg, rgba(20, 26, 51, 0.92), rgba(30, 38, 70, 0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -120px;
            top: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 181, 62, 0.18), transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 40px;
            padding: 7px 18px;
            font-size: 13px;
            letter-spacing: 1px;
            color: #f5d489;
            margin-bottom: 28px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: .5px;
            margin-bottom: 22px;
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .4px;
            transition: all .3s ease;
        }

        .btn-primary {
            background: var(--accent);
            color: #1c1e2a;
            box-shadow: 0 8px 24px rgba(240, 181, 62, 0.3);
        }

        .btn-primary:hover {
            background: #ffc655;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(240, 181, 62, 0.4);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 54px;
            padding-top: 34px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-stats .stat {
            text-align: left;
        }

        .hero-stats .stat b {
            display: block;
            font-size: 30px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-stats .stat span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        /* Section base */
        .section {
            padding: var(--space) 0;
        }

        .section-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 58px;
        }

        .section-head .tag {
            display: inline-block;
            background: var(--accent-soft);
            color: #b57f16;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            border-radius: 40px;
            padding: 6px 16px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* Guide steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .step-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 38px 32px;
            position: relative;
            transition: all .3s ease;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }

        .step-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            opacity: 0.6;
            line-height: 1;
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .step-card p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        .step-card i {
            position: absolute;
            top: 30px;
            right: 28px;
            font-size: 22px;
            color: var(--border);
        }

        /* Hot chapters */
        .hot-list {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }

        .hot-card {
            position: relative;
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all .35s ease;
        }

        .hot-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .hot-cover {
            position: relative;
            aspect-ratio: 3/4;
            overflow: hidden;
        }

        .hot-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .hot-card:hover .hot-cover img {
            transform: scale(1.06);
        }

        .hot-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(20, 26, 51, 0.55), transparent 55%);
        }

        .hot-rank {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            border-radius: 8px;
            padding: 5px 12px;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .hot-rank.top {
            background: var(--accent);
            color: #1c1e2a;
        }

        .hot-tag {
            position: absolute;
            right: 12px;
            top: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.9);
            color: #b57f16;
            font-size: 12px;
            font-weight: 600;
            border-radius: 30px;
            padding: 4px 12px;
            backdrop-filter: blur(6px);
        }

        .hot-info {
            padding: 18px 18px 22px;
        }

        .hot-info h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .hot-info p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .hot-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        .heat-bar {
            height: 4px;
            background: var(--border);
            border-radius: 4px;
            margin-top: 12px;
            overflow: hidden;
        }

        .heat-bar span {
            display: block;
            height: 100%;
            background: linear-gradient(90deg, var(--accent), #ffd380);
            border-radius: 4px;
        }

        /* Schedule */
        .schedule-wrap {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .schedule-text h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .schedule-text p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.85;
            margin-bottom: 26px;
        }

        .schedule-list {
            margin-top: 8px;
        }

        .schedule-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }

        .schedule-item:last-child {
            border-bottom: none;
        }

        .schedule-day {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: var(--primary-soft);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: .5px;
        }

        .schedule-item.updated .schedule-day {
            background: var(--accent-soft);
            color: #b57f16;
        }

        .schedule-item .info {
            flex: 1;
        }

        .schedule-item .info b {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
        }

        .schedule-item .info span {
            font-size: 13px;
            color: var(--text-weak);
        }

        .schedule-status {
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 30px;
            background: var(--primary-soft);
            color: var(--primary);
        }

        .schedule-status.published {
            background: #e5f7eb;
            color: #1a9d54;
        }

        .schedule-status.pending {
            background: #fef1e3;
            color: #d97914;
        }

        .progress-blocks {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px;
            box-shadow: var(--shadow);
        }

        .progress-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }

        .progress-title b {
            font-size: 17px;
            color: var(--primary);
        }

        .progress-title span {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent-dark);
        }

        .progress-item {
            margin-bottom: 22px;
        }

        .progress-item:last-child {
            margin-bottom: 0;
        }

        .progress-item .meta {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            margin-bottom: 8px;
        }

        .progress-item .meta b {
            font-weight: 600;
            color: var(--text);
        }

        .progress-item .meta span {
            color: var(--text-weak);
            font-size: 13px;
        }

        .progress-track {
            height: 8px;
            background: var(--primary-soft);
            border-radius: 10px;
            overflow: hidden;
        }

        .progress-track i {
            display: block;
            height: 100%;
            border-radius: 10px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            position: relative;
        }

        .progress-track i::after {
            content: "";
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #fff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
        }

        /* Insight grid */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .insight-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .insight-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .insight-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .insight-card:hover::before {
            opacity: 1;
        }

        .insight-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-soft);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .insight-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .insight-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .insight-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .insight-link i {
            transition: transform .3s ease;
        }

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

        /* Article list */
        .content-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .content-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .content-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .content-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .content-card:hover .content-cover img {
            transform: scale(1.05);
        }

        .content-cover .tag {
            position: absolute;
            left: 14px;
            top: 14px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            border-radius: 30px;
            padding: 5px 14px;
        }

        .content-body {
            padding: 24px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .content-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .content-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 18px;
        }

        .content-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        .content-meta .more {
            color: var(--accent-dark);
            font-weight: 600;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 30px;
            margin-bottom: 18px;
            transition: all .3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: transparent;
        }

        .faq-item h3 {
            font-size: 16.5px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3 i {
            color: var(--accent);
            font-size: 15px;
        }

        .faq-item p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.8;
            padding-left: 26px;
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(20, 26, 51, 0.95), rgba(30, 38, 70, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .cta-inner {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-inner h2 span {
            color: var(--accent);
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .cta-inner .btn {
            padding: 16px 38px;
            font-size: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 66px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 18px;
            font-size: 18px;
        }

        .footer-brand .logo .logo-dot {
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(240, 181, 62, 0.25);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 16px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color .25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-col ul li {
            font-size: 14px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Focus */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(240, 181, 62, 0.5);
            outline-offset: 2px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --space: 80px;
                --space-sm: 48px;
            }

            .hot-list {
                grid-template-columns: repeat(4, 1fr);
            }

            .hot-card:nth-child(5) {
                display: none;
            }

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

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

        @media (max-width: 768px) {
            .nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 28px 22px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                transform: translateY(-130%);
                transition: transform .35s ease;
                z-index: 99;
            }

            .nav.open {
                transform: translateY(0);
            }

            .nav-item {
                width: 100%;
                padding: 15px 0;
                border-bottom: 1px solid var(--border);
                font-size: 16px;
            }

            .nav-item:last-child {
                border-bottom: none;
            }

            .nav-item::after {
                display: none;
            }

            .nav-item.active {
                color: var(--accent-dark);
            }

            .nav-toggle {
                display: flex;
            }

            .hero {
                padding: 90px 0 80px;
            }

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

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

            .hero-stats {
                flex-wrap: wrap;
                gap: 28px;
            }

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

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

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

            .hot-card:nth-child(5) {
                display: block;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }

            .hero {
                padding: 70px 0 60px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero-stats .stat b {
                font-size: 24px;
            }

            .section-card h2 {
                font-size: 26px;
            }

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

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

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

            .cta-inner h2 {
                font-size: 27px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }