/* roulang page: index */
:root {
            --brand: #0284c7;
            --brand-dark: #0c4a6e;
            --ink: #0f172a;
            --ink-light: #64748b;
            --gold: #f59e0b;
            --bg: #f8fafc;
            --card-border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.15);
        }

        .nav-desktop {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 76px;
            gap: 20px;
        }

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

        .nav-right {
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: #94a3b8;
            border-radius: 999px;
            transition: all .25s ease;
            white-space: nowrap;
        }

        .nav-link i {
            font-size: 13px;
            opacity: .7;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--gold);
            background: rgba(245, 158, 11, 0.1);
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 1px;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 8px 16px;
            white-space: nowrap;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--gold);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.6);
        }

        .mobile-toggle {
            display: none;
        }

        .mobile-menu {
            display: none;
            padding: 12px 20px 20px;
            background: #0f172a;
            border-top: 1px solid rgba(148, 163, 184, 0.1);
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            color: #94a3b8;
            font-size: 16px;
            border-radius: 10px;
            transition: all .2s;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--gold);
            background: rgba(245, 158, 11, 0.08);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 720px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, rgba(2, 132, 199, 0.88), rgba(8, 47, 73, 0.96)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 20%, rgba(245, 158, 11, 0.15), transparent 60%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            padding: 60px 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: 2px;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .hero p {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.92);
            max-width: 640px;
            margin: 0 auto 36px;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 12px;
            transition: all .3s ease;
            cursor: pointer;
            border: 2px solid transparent;
        }

        .btn-gold {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #fff;
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.35);
        }

        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat .num {
            font-size: 36px;
            font-weight: 800;
            color: var(--gold);
        }

        .hero-stat .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
        }

        /* Section common */
        .section {
            padding: 100px 0;
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-header .tag-line {
            display: inline-block;
            padding: 5px 16px;
            background: rgba(2, 132, 199, 0.1);
            color: var(--brand);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            color: var(--ink);
            margin-bottom: 16px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--ink-light);
            line-height: 1.7;
        }

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

        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 32px;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow);
            transition: all .35s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(2, 132, 199, 0.3);
        }

        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: linear-gradient(135deg, #e0f2fe, #bae6fd);
            color: var(--brand);
            margin-bottom: 20px;
            transition: all .3s ease;
        }

        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--brand), #0369a1);
            color: #fff;
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--ink);
        }

        .feature-card p {
            font-size: 15px;
            color: var(--ink-light);
            line-height: 1.75;
        }

        /* Category grid */
        .category-section {
            background: #fff;
        }

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

        .category-card {
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--card-border);
            background: #fff;
            box-shadow: var(--shadow);
            transition: all .35s ease;
            position: relative;
        }

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

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

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

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

        .category-card .cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.5), transparent 60%);
        }

        .category-card .body {
            padding: 28px 28px 32px;
        }

        .category-card .tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .tag {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(2, 132, 199, 0.08);
            color: var(--brand);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
        }

        .category-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .category-card p {
            font-size: 15px;
            color: var(--ink-light);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .category-card .card-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
            transition: gap .3s ease;
        }

        .category-card .card-btn:hover {
            gap: 12px;
            color: var(--brand-dark);
        }

        /* News area */
        .news-section {
            background: var(--bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
        }

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

        .news-item {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow);
            transition: all .3s ease;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
            border-color: rgba(2, 132, 199, 0.25);
        }

        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: #e2e8f0;
        }

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

        .news-content {
            flex: 1;
        }

        .news-content .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 13px;
        }

        .news-content .meta .cat {
            background: rgba(245, 158, 11, 0.1);
            color: #d97706;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 600;
        }

        .news-content .meta time {
            color: #94a3b8;
        }

        .news-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-content h3 a:hover {
            color: var(--brand);
        }

        .news-content p {
            font-size: 14px;
            color: var(--ink-light);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--card-border);
            padding: 28px;
            box-shadow: var(--shadow);
        }

        .sidebar-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid rgba(2, 132, 199, 0.1);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--brand);
        }

        .hot-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .hot-tags a {
            padding: 4px 14px;
            background: #f1f5f9;
            border-radius: 999px;
            font-size: 13px;
            color: var(--ink-light);
            transition: all .2s;
        }

        .hot-tags a:hover {
            background: rgba(2, 132, 199, 0.1);
            color: var(--brand);
        }

        .notice-list {
            list-style: none;
        }

        .notice-list li {
            padding: 10px 0;
            border-bottom: 1px dashed #e2e8f0;
            font-size: 14px;
            color: var(--ink-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .notice-list li:last-child {
            border-bottom: none;
        }

        .notice-list li::before {
            content: '•';
            color: var(--gold);
            font-weight: bold;
        }

        /* Process section */
        .process-section {
            background: #0f172a;
            color: #fff;
        }

        .process-section .section-header h2 {
            color: #fff;
        }

        .process-section .section-header p {
            color: #94a3b8;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .process-step {
            position: relative;
            padding: 36px 28px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            transition: all .3s ease;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateY(-4px);
        }

        .process-step .step-num {
            font-size: 42px;
            font-weight: 900;
            color: rgba(245, 158, 11, 0.4);
            margin-bottom: 14px;
            line-height: 1;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            color: #94a3b8;
            line-height: 1.7;
        }

        /* Stats band */
        .stats-band {
            background: linear-gradient(135deg, #0369a1, #0c4a6e);
            padding: 80px 0;
        }

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

        .stat-block {
            padding: 32px 20px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
        }

        .stat-block .value {
            font-size: 42px;
            font-weight: 900;
            color: #fbbf24;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-block .label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
        }

        /* FAQ */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            transition: box-shadow .3s ease;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            color: var(--ink);
            transition: background .3s ease;
            text-align: left;
            width: 100%;
        }

        .faq-question:hover {
            background: #f8fafc;
        }

        .faq-question .icon {
            color: var(--brand);
            font-size: 18px;
            transition: transform .3s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            display: none;
            padding: 0 28px 24px;
            font-size: 15px;
            color: var(--ink-light);
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(2, 132, 199, 0.9), rgba(8, 47, 73, 0.95)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 36px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            margin-bottom: 28px;
        }

        .footer-brand .logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            max-width: 320px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #94a3b8;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all .25s;
        }

        .footer-links a:hover {
            color: var(--gold);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
        }

        .footer-bottom a {
            color: #94a3b8;
        }

        .footer-bottom a:hover {
            color: var(--gold);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 44px;
            }
            .feature-grid,
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: flex;
                justify-content: space-between;
                height: 64px;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 44px;
                height: 44px;
                color: #fff;
                font-size: 22px;
                border-radius: 10px;
                cursor: pointer;
                transition: background .2s;
            }
            .mobile-toggle:hover {
                background: rgba(255, 255, 255, 0.08);
            }
            .mobile-menu {
                display: block;
            }
            .mobile-menu.hidden {
                display: none;
            }
            .section {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 30px;
            }
            .hero {
                min-height: 560px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-cta {
                flex-direction: column;
                align-items: center;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat .num {
                font-size: 28px;
            }
            .feature-grid,
            .category-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 28px;
                letter-spacing: 1px;
            }
            .hero p {
                font-size: 15px;
            }
            .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .cta-buttons {
                flex-direction: column;
            }
        }

/* roulang page: article */
:root {
    --brand: #f59e0b;
    --brand-dark: #d97706;
    --brand-light: #fbbf24;
    --bg: #f8f7f4;
    --border: #e9e5de;
    --radius: 16px;
    --shadow-card: 0 4px 24px rgba(0,0,0,.06);
    --shadow-hover: 0 12px 36px rgba(0,0,0,.1);
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: #1f1e2e;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; transition: all .25s ease; }
  img { display: block; max-width: 100%; }
  button { font-family: inherit; }

  .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

  /* ===== 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 rgba(0,0,0,.06);
  }
  .nav-desktop { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
  .nav-left, .nav-right { display: flex; align-items: center; gap: 8px; flex: 1; }
  .nav-right { justify-content: flex-end; }
  .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: #3d3d4e;
    white-space: nowrap;
    transition: all .25s ease;
  }
  .nav-link i { font-size: 13px; color: #b45309; opacity: .7; }
  .nav-link:hover { background: #fef9c3; color: #b45309; transform: translateY(-1px); }
  .nav-link.active { background: #f59e0b; color: #fff; box-shadow: 0 4px 14px rgba(245,158,11,.35); }
  .nav-link.active i { color: #fff; opacity: 1; }
  .nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: #12111e;
    letter-spacing: .5px;
    white-space: nowrap;
  }
  .logo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 0 0 24px rgba(245,158,11,.7);
    display: inline-block;
  }
  .mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: #12111e;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
  }
  .mobile-toggle:hover { background: #f5f5f7; }
  .mobile-menu {
    display: none;
    background: #fff;
    border-top: 1px solid #f0efeb;
    padding: 16px 24px 24px;
  }
  .mobile-menu a {
    display: block;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    color: #3d3d4e;
    margin-bottom: 4px;
  }
  .mobile-menu a:hover { background: #fef9c3; color: #b45309; }
  .mobile-menu a.active { background: #f59e0b; color: #fff; }
  .mobile-menu.hidden { display: none; }

  @media (max-width: 1024px) {
    .nav-link { padding: 8px 10px; font-size: 13px; }
    .nav-logo { font-size: 18px; }
  }
  @media (max-width: 768px) {
    .nav-left a, .nav-right a { display: none; }
    .nav-left, .nav-right { flex: 0; }
    .nav-desktop { justify-content: space-between; }
    .mobile-toggle { display: inline-flex; }
    .mobile-menu { display: block; }
    .mobile-menu.hidden { display: none; }
    .nav-logo { order: -1; }
  }

  /* ===== Article Hero ===== */
  .article-hero {
    position: relative;
    padding: 80px 0 64px;
    background: linear-gradient(135deg, rgba(18,17,30,.92), rgba(18,17,30,.75)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff;
  }
  .article-hero .container { position: relative; z-index: 2; }
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,.6);
    margin-bottom: 24px;
  }
  .breadcrumb a { color: rgba(255,255,255,.8); }
  .breadcrumb a:hover { color: #fbbf24; }
  .breadcrumb i { font-size: 10px; color: rgba(255,255,255,.4); }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(245,158,11,.2);
    border: 1px solid rgba(245,158,11,.5);
    color: #fbbf24;
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    backdrop-filter: blur(8px);
  }
  .article-hero h1 {
    font-size: clamp(26px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 16px;
    letter-spacing: .5px;
  }
  .hero-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: rgba(255,255,255,.7);
  }
  .hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
  .hero-meta i { color: #f59e0b; }

  /* ===== Article body ===== */
  .article-body { padding: 56px 0 64px; }
  .article-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 48px;
    align-items: start;
  }
  .article-main {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 40px;
    border: 1px solid var(--border);
  }
  .article-content { font-size: 16px; line-height: 2; color: #3d3d4e; }
  .article-content p { margin-bottom: 1.4em; }
  .article-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: #12111e;
    margin: 1.6em 0 .8em;
    padding-left: 16px;
    border-left: 4px solid var(--brand);
  }
  .article-content h3 { font-size: 19px; font-weight: 700; color: #12111e; margin: 1.4em 0 .6em; }
  .article-content ul, .article-content ol { margin: 0 0 1.4em 1.5em; }
  .article-content li { margin-bottom: .5em; }
  .article-content blockquote {
    background: #fef9c3;
    border-left: 4px solid var(--brand);
    padding: 16px 24px;
    border-radius: 0 12px 12px 0;
    margin: 1.4em 0;
    color: #78510a;
    font-style: italic;
  }
  .article-content img { border-radius: 12px; margin: 1.5em 0; }
  .article-content a { color: #d97706; border-bottom: 1px dashed rgba(217,119,6,.4); }
  .article-content a:hover { color: #b45309; border-bottom-color: #b45309; }

  .tag-section {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 28px;
    margin-top: 32px;
    border-top: 1px solid #f0efeb;
  }
  .tag-item {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: #f5f5f7;
    border-radius: 999px;
    font-size: 13px;
    color: #3d3d4e;
    transition: all .25s ease;
  }
  .tag-item:hover { background: #fef9c3; color: #b45309; transform: translateY(-1px); }
  .share-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 24px;
    margin-top: 24px;
    border-top: 1px solid #f0efeb;
  }
  .share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f5f5f7;
    color: #3d3d4e;
    font-size: 15px;
    transition: all .25s ease;
  }
  .share-btn:hover { background: var(--brand); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(245,158,11,.3); }

  /* ===== Sidebar ===== */
  .article-sidebar { display: flex; flex-direction: column; gap: 28px; }
  .sidebar-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 28px;
    border: 1px solid var(--border);
  }
  .sidebar-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #12111e;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .sidebar-card h3 i { color: var(--brand); }
  .sidebar-list { list-style: none; padding: 0; margin: 0; }
  .sidebar-list li { border-bottom: 1px solid #f0efeb; }
  .sidebar-list li:last-child { border-bottom: none; }
  .sidebar-list a {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 0;
  }
  .sidebar-list a:hover .link-title { color: #d97706; }
  .sidebar-list .link-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--brand);
    background: #fef9c3;
    border-radius: 8px;
    padding: 2px 8px;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .sidebar-list .link-title { font-size: 14px; font-weight: 500; color: #3d3d4e; line-height: 1.5; transition: color .2s; }
  .sidebar-cta {
    background: linear-gradient(135deg, #12111e, #2d2a44);
    border: none;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .sidebar-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 20%, rgba(245,158,11,.25), transparent 60%);
  }
  .sidebar-cta h3 { color: #fff; justify-content: center; }
  .sidebar-cta p { font-size: 14px; color: rgba(255,255,255,.7); margin-bottom: 20px; position: relative; z-index: 1; }
  .sidebar-cta .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--brand);
    color: #12111e;
    font-weight: 700;
    padding: 10px 24px;
    border-radius: 999px;
    font-size: 14px;
    transition: all .25s ease;
    position: relative;
    z-index: 1;
  }
  .sidebar-cta .cta-btn:hover { background: var(--brand-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,.35); }

  /* ===== Discussion ===== */
  .discussion-section { padding: 72px 0; background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .section-title { font-size: 30px; font-weight: 800; color: #12111e; text-align: center; letter-spacing: .5px; }
  .section-subtitle { text-align: center; color: #5b5b6b; font-size: 15px; margin-top: 8px; }
  .discussion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
  }
  .discussion-card {
    background: #f8f7f4;
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--border);
    transition: all .3s ease;
  }
  .discussion-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); background: #fff; }
  .discussion-card .user-row { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
  .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
  }
  .avatar-1 { background: linear-gradient(135deg, #f59e0b, #d97706); }
  .avatar-2 { background: linear-gradient(135deg, #6366f1, #4f46e5); }
  .avatar-3 { background: linear-gradient(135deg, #10b981, #059669); }
  .avatar-4 { background: linear-gradient(135deg, #f43f5e, #e11d48); }
  .discussion-card .user-name { font-size: 14px; font-weight: 600; color: #12111e; }
  .discussion-card .user-time { font-size: 12px; color: #9ca3af; }
  .discussion-card p { font-size: 14px; color: #3d3d4e; line-height: 1.7; margin-bottom: 14px; }
  .discussion-card .vote-row { display: flex; align-items: center; gap: 14px; }
  .vote-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #5b5b6b;
    padding: 4px 12px;
    border-radius: 999px;
    background: #f0efeb;
    transition: all .2s;
  }
  .vote-btn:hover { background: #fef9c3; color: #b45309; }

  /* ===== Related ===== */
  .related-section { padding: 72px 0; }
  .related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
  }
  .related-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all .3s ease;
  }
  .related-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
  .related-card .card-img { height: 160px; overflow: hidden; position: relative; }
  .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
  .related-card:hover .card-img img { transform: scale(1.06); }
  .related-card .card-img .cat-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(245,158,11,.9);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
  }
  .related-card .card-body { padding: 20px; }
  .related-card .card-body h4 { font-size: 16px; font-weight: 700; color: #12111e; line-height: 1.5; margin-bottom: 8px; }
  .related-card .card-body h4 a:hover { color: #d97706; }
  .related-card .card-body .post-meta { display: flex; gap: 12px; font-size: 12px; color: #9ca3af; }

  /* ===== FAQ ===== */
  .faq-section { padding: 72px 0; background: #12111e; color: #fff; position: relative; overflow: hidden; }
  .faq-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(245,158,11,.15), transparent 50%);
  }
  .faq-section .container { position: relative; z-index: 1; }
  .faq-section .section-title { color: #fff; }
  .faq-section .section-subtitle { color: rgba(255,255,255,.6); }
  .faq-grid { max-width: 860px; margin: 44px auto 0; display: grid; gap: 14px; }
  .faq-item {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 14px;
    padding: 0;
    overflow: hidden;
    transition: border-color .3s;
  }
  .faq-item:hover { border-color: rgba(245,158,11,.4); }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    background: none;
    border: none;
    color: #fff;
    text-align: left;
    width: 100%;
    gap: 16px;
  }
  .faq-question i { color: var(--brand); font-size: 14px; transition: transform .3s; flex-shrink: 0; }
  .faq-item.open .faq-question i { transform: rotate(45deg); }
  .faq-answer {
    display: none;
    padding: 0 24px 20px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,.7);
  }
  .faq-item.open .faq-answer { display: block; }

  /* ===== CTA ===== */
  .cta-section { padding: 72px 0; }
  .cta-banner {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 24px;
    padding: 48px 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(217,119,6,.3);
  }
  .cta-banner::before {
    content: '';
    position: absolute;
    right: -40px;
    top: -40px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
  }
  .cta-banner::after {
    content: '';
    position: absolute;
    right: 60px;
    bottom: -60px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
  }
  .cta-banner h2 { font-size: 28px; font-weight: 800; color: #12111e; margin-bottom: 6px; position: relative; z-index: 1; }
  .cta-banner p { font-size: 15px; color: rgba(18,17,30,.7); max-width: 500px; position: relative; z-index: 1; }
  .cta-banner .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #12111e;
    color: #fff;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 999px;
    font-size: 15px;
    transition: all .25s ease;
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 24px rgba(0,0,0,.2);
  }
  .cta-banner .btn-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,.3); background: #2d2a44; }

  /* ===== Footer ===== */
  .site-footer {
    background: #12111e;
    color: rgba(255,255,255,.7);
    padding: 64px 0 32px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
  }
  .footer-brand .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
  }
  .footer-brand p { font-size: 14px; line-height: 1.8; max-width: 360px; }
  .footer-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; }
  .footer-links { list-style: none; padding: 0; margin: 0; }
  .footer-links li { margin-bottom: 12px; }
  .footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,.7);
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .footer-links a i { font-size: 10px; color: var(--brand); }
  .footer-links a:hover { color: var(--brand-light); transform: translateX(3px); }
  .footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 28px;
    font-size: 13px;
    color: rgba(255,255,255,.4);
  }
  .footer-bottom a { color: rgba(255,255,255,.5); }
  .footer-bottom a:hover { color: var(--brand-light); }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  }
  @media (max-width: 768px) {
    .article-hero { padding: 48px 0 40px; }
    .article-main { padding: 24px; border-radius: 16px; }
    .article-content { font-size: 15px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .cta-banner { padding: 32px 24px; flex-direction: column; text-align: center; }
    .cta-banner p { margin: 0 auto; }
    .section-title { font-size: 24px; }
    .related-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
    .container { padding: 0 16px; }
  }
  @media (max-width: 520px) {
    .article-hero h1 { font-size: 22px; }
    .hero-meta { gap: 12px; font-size: 13px; }
    .tag-section, .share-bar { flex-wrap: wrap; }
    .related-grid { grid-template-columns: 1fr; }
    .discussion-grid { grid-template-columns: 1fr; }
    .article-main { padding: 20px 16px; }
  }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --card: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset / Base ===== */
        *,
        *::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;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        select {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 16px rgba(15, 23, 42, 0.05);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: 74px;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-left {
            justify-content: flex-start;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .nav-logo {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.6);
        }
        .nav-link {
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 7px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-link i {
            font-size: 0.85rem;
            opacity: 0.9;
        }
        .nav-link:hover {
            background: var(--bg-alt);
            color: var(--primary);
            border-color: var(--border);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 23, 42, 0.25);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--bg-alt);
        }
        .mobile-menu {
            background: #fff;
            padding: 12px 20px 20px;
            border-top: 1px solid var(--border);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.hidden {
            display: none;
        }
        .mobile-menu:not(.hidden) {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            background: var(--bg-alt);
        }
        .mobile-menu a.active {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 13px 32px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            line-height: 1.2;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 4px 24px rgba(245, 158, 11, 0.35);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(245, 158, 11, 0.45);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.65);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        .btn-white:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(245, 158, 11, 0.12);
            color: var(--accent-dark);
            border: 1px solid rgba(245, 158, 11, 0.25);
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .badge-light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
        }
        .badge-dark {
            background: rgba(15, 23, 42, 0.06);
            color: var(--primary);
            border-color: rgba(15, 23, 42, 0.08);
        }

        /* ===== 板块标题 ===== */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            margin-top: 16px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.02rem;
            color: var(--text-weak);
            margin-top: 14px;
            line-height: 1.8;
        }

        /* ===== 顶部横幅 ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.93) 0%, rgba(30, 41, 59, 0.78) 100%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            padding: 110px 0 90px;
            color: #fff;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-top: 18px;
        }
        .page-banner p {
            max-width: 640px;
            margin: 20px auto 0;
            font-size: 1.08rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
        }
        .banner-actions {
            margin-top: 34px;
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 8px;
        }
        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .banner-breadcrumb a:hover {
            color: var(--accent);
        }
        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 数据统计条 ===== */
        .stats-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 30px 0;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.03);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 12px 8px;
            border-right: 1px solid var(--border);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* ===== 入口卡片 ===== */
        .section-block {
            padding: 90px 0;
        }
        .section-block-alt {
            background: var(--bg);
        }
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .entry-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .entry-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(245, 158, 11, 0.3);
        }
        .entry-card-media {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--primary-light);
        }
        .entry-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .entry-card:hover .entry-card-media img {
            transform: scale(1.05);
        }
        .entry-card-media .media-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }
        .entry-card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .entry-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            background: var(--primary);
            margin-bottom: 18px;
            box-shadow: 0 6px 18px rgba(15, 23, 42, 0.2);
        }
        .entry-card-icon.gold {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 6px 18px rgba(245, 158, 11, 0.3);
        }
        .entry-card-icon.green {
            background: #10b981;
            box-shadow: 0 6px 18px rgba(16, 185, 129, 0.25);
        }
        .entry-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .entry-card p {
            font-size: 0.92rem;
            color: var(--text-weak);
            line-height: 1.75;
            margin-bottom: 20px;
            flex: 1;
        }
        .entry-card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            margin-top: auto;
        }
        .entry-card-meta .tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--text-weak);
            background: var(--bg-alt);
            padding: 4px 12px;
            border-radius: 999px;
        }

        /* ===== 流程步骤 ===== */
        .steps-wrapper {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }
        .steps-wrapper::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), rgba(245, 158, 11, 0.15));
            z-index: 0;
            border-radius: 999px;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 10px;
        }
        .step-num {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            margin: 0 auto 22px;
            border: 4px solid #fff;
            box-shadow: 0 8px 28px rgba(15, 23, 42, 0.2);
        }
        .step-item:nth-child(2) .step-num {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.3);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.7;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ===== 安全提示 ===== */
        .tips-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            position: relative;
            overflow: hidden;
            padding: 100px 0;
        }
        .tips-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.08;
        }
        .tips-section .container {
            position: relative;
            z-index: 1;
        }
        .tips-section .section-title {
            color: #fff;
        }
        .tips-section .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .tip-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 26px 28px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }
        .tip-item:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateX(6px);
        }
        .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .tip-item h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .tip-item p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.open {
            border-color: rgba(245, 158, 11, 0.4);
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 22px 28px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-dark);
        }
        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--text-weak);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            color: var(--primary);
            transform: rotate(135deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 28px 24px;
            font-size: 0.93rem;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(120deg, #0f172a, #1e293b);
            color: #fff;
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.12);
            top: -200px;
            right: -120px;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            bottom: -150px;
            left: -100px;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
        }
        .cta-section p {
            max-width: 520px;
            margin: 16px auto 0;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            line-height: 1.8;
        }
        .cta-actions {
            margin-top: 34px;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b1220;
            color: #94a3b8;
            padding: 60px 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand p {
            line-height: 1.8;
            color: #64748b;
            margin-top: 12px;
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            color: #94a3b8;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-links a i {
            font-size: 0.65rem;
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: #64748b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .nav-desktop .nav-left a,
            .nav-desktop .nav-right a {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-desktop {
                min-height: 64px;
            }
            .nav-logo {
                font-size: 1.25rem;
            }
            .page-banner {
                padding: 80px 0 64px;
            }
            .page-banner h1 {
                font-size: 2.1rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 16px 8px;
            }
            .stat-item:nth-child(3),
            .stat-item:nth-child(4) {
                border-bottom: none;
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrapper {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 30px;
            }
            .steps-wrapper::before {
                display: none;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 18px;
            }
            .nav-logo {
                font-size: 1.05rem;
            }
            .page-banner {
                padding: 64px 0 52px;
            }
            .page-banner h1 {
                font-size: 1.65rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .banner-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .banner-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .section-block {
                padding: 60px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .entry-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .tip-item {
                padding: 20px;
                flex-direction: column;
            }
            .faq-question {
                padding: 18px 20px;
                font-size: 0.95rem;
            }
            .faq-answer-inner {
                padding: 0 20px 20px;
                padding-top: 16px;
            }
            .cta-section {
                padding: 64px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-deep: #1e3a8a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
            --shadow-hover: 0 2px 6px rgba(0,0,0,.08), 0 16px 40px rgba(0,0,0,.12);
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            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;
        }

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: 0 2px 16px rgba(15, 23, 42, .04);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 16px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-link i {
            font-size: 14px;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .nav-link:hover {
            background: #f1f5f9;
            color: var(--primary);
            border-color: var(--border);
        }

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

        .nav-link.active {
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary-deep);
            border-color: #bfdbfe;
            font-weight: 600;
        }

        .nav-link.active i {
            color: var(--primary);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-deep);
            letter-spacing: .5px;
            line-height: 1.2;
            flex-shrink: 0;
            padding: 0 8px;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 20px rgba(245, 158, 11, .6);
            flex-shrink: 0;
        }

        .mobile-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 12px 16px 20px;
            gap: 6px;
            border-top: 1px solid var(--border);
            background: #fff;
        }

        .mobile-menu.hidden {
            display: none;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .mobile-menu a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .mobile-menu a.active {
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary-deep);
            font-weight: 600;
        }

        /* ===== Page Hero ===== */
        .cat-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 110px 0 90px;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 58, 138, .78) 45%, rgba(245, 158, 11, .35));
            z-index: 1;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 340px;
            height: 340px;
            background: radial-gradient(circle, rgba(245, 158, 11, .35), transparent 70%);
            z-index: 1;
        }

        .cat-hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .cat-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .3);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 24px;
        }

        .cat-hero h1 {
            color: #fff;
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }

        .cat-hero-lead {
            color: rgba(255, 255, 255, .88);
            font-size: 18px;
            line-height: 1.7;
            max-width: 620px;
            margin-bottom: 36px;
        }

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

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 44px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, .2);
        }

        .stat-item strong {
            display: block;
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            line-height: 1.2;
        }

        .stat-item span {
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            color: #1e293b;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(245, 158, 11, .35);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, .45);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .22);
            border-color: rgba(255, 255, 255, .6);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            background: transparent;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, .3);
        }

        /* ===== Sections ===== */
        .section {
            padding: 96px 0;
        }

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

        .section-dark {
            background: linear-gradient(135deg, #0f172a, #1e3a8a);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 999px;
            background: #eff6ff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

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

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

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

        .section-dark .section-head p {
            color: rgba(255, 255, 255, .75);
        }

        .section-dark .section-tag {
            background: rgba(255, 255, 255, .12);
            color: var(--accent-light);
        }

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

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #bfdbfe;
        }

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

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            counter-reset: step;
        }

        .step-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-deep));
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .step-card p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.75;
        }

        .step-tip {
            margin-top: 16px;
            padding: 12px 16px;
            background: #fffbeb;
            border-left: 3px solid var(--accent);
            border-radius: 8px;
            font-size: 13.5px;
            color: #92400e;
        }

        /* ===== Rank List ===== */
        .rank-wrap {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 48px;
            align-items: center;
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 18px 22px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .rank-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: #bfdbfe;
            transform: translateX(6px);
        }

        .rank-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            font-style: italic;
            min-width: 42px;
            text-align: center;
        }

        .rank-item:nth-child(1) .rank-num {
            color: var(--accent);
        }

        .rank-item:nth-child(2) .rank-num {
            color: var(--primary);
        }

        .rank-item:nth-child(3) .rank-num {
            color: #2563eb;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 3px;
        }

        .rank-info p {
            font-size: 13.5px;
            color: var(--text-weak);
        }

        .rank-badge {
            padding: 5px 14px;
            border-radius: 999px;
            background: #eff6ff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
        }

        .rank-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .rank-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 380px;
        }

        .rank-visual-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .88));
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 32px;
        }

        .rank-visual-overlay h4 {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .rank-visual-overlay p {
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
        }

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

        .topic-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }

        .topic-card:hover {
            background: rgba(255, 255, 255, .12);
            border-color: rgba(245, 158, 11, .5);
            transform: translateY(-4px);
        }

        .topic-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(245, 158, 11, .2);
            color: var(--accent-light);
            font-size: 12.5px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .topic-card h3 {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .topic-card p {
            color: rgba(255, 255, 255, .68);
            font-size: 13.5px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .topic-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: rgba(255, 255, 255, .6);
            font-size: 13px;
        }

        .topic-meta i {
            color: var(--accent-light);
            margin-right: 5px;
        }

        /* ===== User Reviews ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .review-stars {
            color: var(--accent);
            font-size: 15px;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }

        .review-card blockquote {
            font-size: 15px;
            line-height: 1.75;
            color: var(--text);
            font-style: normal;
            margin-bottom: 22px;
            min-height: 78px;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .avatar-1 {
            background: linear-gradient(135deg, #3b82f6, #1e40af);
        }

        .avatar-2 {
            background: linear-gradient(135deg, #f59e0b, #b45309);
        }

        .avatar-3 {
            background: linear-gradient(135deg, #10b981, #065f46);
        }

        .review-user strong {
            display: block;
            font-size: 15px;
            font-weight: 700;
        }

        .review-user span {
            font-size: 13px;
            color: var(--text-weak);
        }

        .avatar-group {
            display: flex;
            align-items: center;
            margin-top: 28px;
        }

        .avatar-group .avatar {
            width: 34px;
            height: 34px;
            font-size: 12px;
            border: 2px solid #fff;
            margin-left: -8px;
        }

        .avatar-group .avatar:first-child {
            margin-left: 0;
        }

        .avatar-g-1 {
            background: linear-gradient(135deg, #6366f1, #4338ca);
        }

        .avatar-g-2 {
            background: linear-gradient(135deg, #ec4899, #be185d);
        }

        .avatar-g-3 {
            background: linear-gradient(135deg, #14b8a6, #0f766e);
        }

        .avatar-g-4 {
            background: linear-gradient(135deg, #f97316, #c2410c);
        }

        .avatar-more {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            border: 2px solid #fff;
            background: var(--bg-alt);
            color: var(--text-weak);
            font-size: 11px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: -8px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .faq-item:hover {
            border-color: #bfdbfe;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            color: var(--primary);
            transition: transform .3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

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

        .faq-item.active .faq-answer {
            max-height: 260px;
        }

        .faq-answer-inner {
            padding: 0 26px 22px;
            font-size: 14.5px;
            line-height: 1.8;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background-size: cover;
            background-position: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(30, 58, 138, .88));
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .78);
            font-size: 16.5px;
            margin-bottom: 32px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Notice Bar ===== */
        .notice-bar {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 18px 24px;
            background: #fffbeb;
            border-top: 1px solid #fde68a;
            border-bottom: 1px solid #fde68a;
            font-size: 14.5px;
            color: #92400e;
            text-align: center;
        }

        .notice-bar i {
            color: var(--accent);
            font-size: 18px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, .85);
            padding: 72px 0 0;
        }

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

        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, .6);
            font-size: 14.5px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .65);
            font-size: 14.5px;
            transition: var(--transition);
        }

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

        .footer-links i {
            font-size: 10px;
            opacity: .7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 26px 0;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, .5);
            font-size: 13.5px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }

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

            .rank-visual img {
                min-height: 280px;
            }
        }

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

            .nav-left,
            .nav-right {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .nav-desktop {
                height: 68px;
            }

            .nav-logo {
                font-size: 19px;
            }

            .mobile-menu {
                display: flex;
            }

            .cat-hero {
                padding: 76px 0 56px;
            }

            .cat-hero h1 {
                font-size: 32px;
            }

            .cat-hero-lead {
                font-size: 16px;
            }

            .hero-stats {
                gap: 24px;
                margin-top: 32px;
                padding-top: 26px;
            }

            .stat-item strong {
                font-size: 22px;
            }

            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 27px;
            }

            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

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

            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .review-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }

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

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

            .cta-inner h2 {
                font-size: 26px;
            }
        }

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

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

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

            .cat-hero h1 {
                font-size: 27px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 14px;
            }

            .stat-item {
                display: flex;
                align-items: center;
                gap: 12px;
            }

            .stat-item strong {
                font-size: 20px;
            }

            .cat-hero-actions {
                flex-direction: column;
            }

            .cat-hero-actions .btn-primary,
            .cat-hero-actions .btn-ghost {
                width: 100%;
            }

            .rank-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .rank-badge {
                align-self: flex-start;
            }

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

            .faq-answer-inner {
                padding: 0 20px 20px;
                padding-top: 14px;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-ghost {
                width: 100%;
            }

            .notice-bar {
                flex-direction: column;
                gap: 8px;
                font-size: 13px;
                padding: 16px;
            }
        }

/* roulang page: category3 */
:root {
            --brand: #f59e0b;
            --brand-dark: #d97706;
            --brand-light: #fef3c7;
            --ink: #0f172a;
            --ink-soft: #475569;
            --mist: #f8fafc;
            --line: #e2e8f0;
            --radius: 14px;
            --radius-sm: 10px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 10px rgba(2, 6, 23, .06);
            --shadow: 0 12px 32px rgba(2, 6, 23, .08);
            --shadow-lg: 0 24px 50px rgba(2, 6, 23, .14);
            --container: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: #fff;
            color: var(--ink);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: 0 1px 12px rgba(2, 6, 23, .04);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            height: 72px;
            position: relative;
        }
        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-right {
            justify-content: flex-end;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #334155;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 13px;
            color: #94a3b8;
            transition: color .25s;
        }
        .nav-link:hover {
            color: var(--brand-dark);
            background: #fef9ec;
        }
        .nav-link:hover i {
            color: var(--brand);
        }
        .nav-link.active {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #fff;
            box-shadow: 0 4px 16px rgba(245, 158, 11, .3);
        }
        .nav-link.active i {
            color: #fff;
        }
        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 900;
            letter-spacing: 1px;
            color: var(--ink);
            padding: 0 8px;
            transition: transform .25s;
        }
        .nav-logo:hover {
            transform: scale(1.03);
        }
        .logo-dot {
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: var(--brand);
            box-shadow: 0 0 18px rgba(245, 158, 11, .65);
            display: inline-block;
        }
        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: #f1f5f9;
            color: var(--ink);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: background .2s;
        }
        .mobile-toggle:hover {
            background: var(--brand-light);
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--line);
            padding: 12px 24px 20px;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.hidden {
            display: none;
        }
        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            color: #334155;
            background: #f8fafc;
            transition: background .2s, color .2s;
        }
        .mobile-menu a i {
            width: 20px;
            text-align: center;
            color: #94a3b8;
        }
        .mobile-menu a.active {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #fff;
        }
        .mobile-menu a.active i {
            color: #fff;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 76px 0 84px;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, .94) 0%, rgba(15, 23, 42, .82) 50%, rgba(120, 53, 15, .65) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 22px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .75);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: #fbbf24;
        }
        .breadcrumb span {
            color: #fbbf24;
        }
        .hero-title {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 900;
            line-height: 1.2;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 18px;
        }
        .hero-title .highlight {
            color: #fbbf24;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            max-width: 640px;
            margin-bottom: 30px;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fef3c7;
            backdrop-filter: blur(4px);
            transition: all .25s;
        }
        .hero-tag:hover {
            background: rgba(255, 255, 255, .2);
            border-color: #fbbf24;
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, .18);
            border: 1px solid rgba(245, 158, 11, .4);
            color: #fde68a;
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
            backdrop-filter: blur(4px);
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 900;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 15px;
            color: #64748b;
            max-width: 640px;
            line-height: 1.8;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        .section-bar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-dark);
            background: var(--brand-light);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        /* ===== 筛选标签 ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 36px;
        }
        .filter-btn {
            padding: 9px 22px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #475569;
            background: #f1f5f9;
            border: 1px solid transparent;
            transition: all .25s;
        }
        .filter-btn:hover {
            background: #fef3c7;
            color: var(--brand-dark);
        }
        .filter-btn.active {
            background: var(--ink);
            color: #fff;
            box-shadow: 0 6px 18px rgba(15, 23, 42, .18);
        }

        /* ===== 活动卡片 ===== */
        .activity-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .activity-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(226, 232, 240, .6);
            box-shadow: var(--shadow-sm);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .activity-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(245, 158, 11, .4);
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
        }
        .card-img-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .activity-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            background: rgba(15, 23, 42, .82);
            color: #fbbf24;
            backdrop-filter: blur(6px);
            letter-spacing: .5px;
        }
        .card-tag.hot {
            background: rgba(245, 158, 11, .92);
            color: #fff;
        }
        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #94a3b8;
            margin-bottom: 12px;
        }
        .card-meta .hot-count {
            color: #f59e0b;
            font-weight: 700;
        }
        .card-title {
            font-size: 18px;
            font-weight: 800;
            line-height: 1.45;
            color: var(--ink);
            margin-bottom: 10px;
            transition: color .25s;
        }
        .activity-card:hover .card-title {
            color: var(--brand-dark);
        }
        .card-desc {
            font-size: 14px;
            color: #64748b;
            line-height: 1.7;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--brand-dark);
            transition: gap .25s;
        }
        .card-link:hover {
            gap: 12px;
        }

        /* ===== 排行榜 ===== */
        .ranking-section {
            background: linear-gradient(145deg, #f8fafc, #fef9ec);
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border-radius: 18px;
            padding: 18px 24px;
            border: 1px solid rgba(226, 232, 240, .5);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }
        .ranking-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow);
            border-color: rgba(245, 158, 11, .3);
        }
        .rank-num {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 18px;
            font-weight: 900;
            background: #f1f5f9;
            color: #94a3b8;
        }
        .ranking-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #fff;
            box-shadow: 0 6px 18px rgba(245, 158, 11, .3);
        }
        .ranking-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #94a3b8, #64748b);
            color: #fff;
        }
        .ranking-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #c084fc, #a855f7);
            color: #fff;
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .rank-progress {
            height: 6px;
            border-radius: 999px;
            background: #e2e8f0;
            overflow: hidden;
            max-width: 320px;
        }
        .rank-progress .bar {
            height: 100%;
            border-radius: 999px;
            background: linear-gradient(90deg, #fbbf24, #f59e0b);
            box-shadow: 0 0 10px rgba(245, 158, 11, .4);
        }
        .rank-stat {
            text-align: right;
            font-size: 14px;
            color: #64748b;
            flex-shrink: 0;
        }
        .rank-stat strong {
            color: var(--brand-dark);
            font-size: 16px;
        }

        /* ===== 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            position: relative;
            background: #fff;
            border-radius: 18px;
            padding: 32px 24px;
            text-align: center;
            border: 1px solid rgba(226, 232, 240, .5);
            box-shadow: var(--shadow-sm);
            transition: all .3s;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            color: var(--brand-dark);
        }
        .step-num {
            position: absolute;
            top: 14px;
            right: 18px;
            font-size: 14px;
            font-weight: 900;
            color: #e2e8f0;
        }
        .step-title {
            font-size: 16px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .step-desc {
            font-size: 13px;
            color: #64748b;
            line-height: 1.7;
        }

        /* ===== 安全提示 ===== */
        .safe-tip {
            background: linear-gradient(135deg, #0f172a, #1e293b);
            border-radius: 24px;
            padding: 40px 44px;
            position: relative;
            overflow: hidden;
        }
        .safe-tip::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .12);
        }
        .safe-tip-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .safe-tip h3 {
            font-size: 26px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 14px;
        }
        .safe-tip p {
            color: rgba(255, 255, 255, .8);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .safe-tip-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .safe-tip-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: rgba(255, 255, 255, .06);
            border-radius: 14px;
            padding: 14px 18px;
            color: rgba(255, 255, 255, .9);
            font-size: 14px;
            line-height: 1.7;
            border: 1px solid rgba(255, 255, 255, .08);
        }
        .safe-tip-list li i {
            color: #fbbf24;
            margin-top: 2px;
            font-size: 13px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid rgba(226, 232, 240, .5);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all .3s;
        }
        .faq-item.open {
            border-color: rgba(245, 158, 11, .4);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            cursor: pointer;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--brand-dark);
        }
        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--brand-light);
            color: var(--brand-dark);
            font-size: 13px;
            transition: transform .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: var(--brand);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px 70px;
        }
        .faq-answer p {
            font-size: 14px;
            color: #475569;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            border-radius: 28px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: .12;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, .9);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 800;
            background: #fff;
            color: var(--brand-dark);
            box-shadow: 0 8px 30px rgba(0, 0, 0, .15);
            transition: all .3s;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, .2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            margin-top: 72px;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            color: #94a3b8;
            max-width: 420px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
        }
        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 30px;
            height: 3px;
            border-radius: 3px;
            background: var(--brand);
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: #94a3b8;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: color .2s, padding-left .2s;
        }
        .footer-links a:hover {
            color: #fbbf24;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 22px 0 26px;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .activity-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .safe-tip-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-link {
                display: none;
            }
            .nav-desktop {
                justify-content: space-between;
                height: 64px;
                padding: 0 16px;
            }
            .nav-logo {
                font-size: 18px;
                margin: 0 auto;
            }
            .mobile-toggle {
                display: flex;
                position: absolute;
                right: 16px;
            }
            .mobile-menu {
                display: flex;
            }
            .page-hero {
                padding: 56px 0 64px;
            }
            .filter-bar {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 8px;
                -webkit-overflow-scrolling: touch;
            }
            .filter-btn {
                flex-shrink: 0;
            }
            .ranking-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 16px;
            }
            .rank-stat {
                text-align: left;
                width: 100%;
                padding-left: 64px;
            }
            .safe-tip {
                padding: 32px 24px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .activity-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .nav-logo {
                font-size: 16px;
            }
            .nav-logo .logo-dot {
                width: 8px;
                height: 8px;
            }
            .hero-title {
                font-size: 30px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 18px 56px;
            }
        }