/* roulang page: index */
:root {
            --primary: #3b5bfd;
            --primary-dark: #1e3dc7;
            --primary-light: #eef1ff;
            --secondary: #7c3aed;
            --secondary-light: #f3eeff;
            --accent: #06b6d4;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --text: #1e293b;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-soft: #f1f5f9;
            --border: #e2e8f0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
            vertical-align: middle;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        .section {
            padding: 90px 0;
        }

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

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 48px;
        }

        .section-head-left {
            max-width: 640px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.4px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            line-height: 1.7;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
            padding: 10px 20px;
            border-radius: 100px;
            background: var(--primary-light);
            transition: all 0.3s ease;
        }

        .section-link:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(2px);
        }

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

        .section-link i {
            transition: transform 0.3s ease;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.4s ease;
            box-shadow: 0 2px 20px rgba(15, 23, 42, 0.04);
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 78px;
        }

        .logo {
            font-size: 24px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 6px 16px rgba(59, 91, 253, 0.3);
            flex-shrink: 0;
        }

        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav .nav-item a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            border-radius: 100px;
            transition: all 0.3s ease;
            position: relative;
        }

        .main-nav .nav-item a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            padding: 10px 24px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(99, 102, 241, 0.4);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1002;
        }

        .hamburger span {
            width: 26px;
            height: 2px;
            background: var(--dark);
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .hamburger.active li {
            transform: translateY(-100%);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* Mobile Nav */
        @media (max-width: 1024px) {
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: min(400px, 85vw);
                height: 100vh;
                background: var(--bg-white);
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 100px 40px 40px;
                transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: -20px 0 60px rgba(0, 0, 0, 0.1);
                z-index: 1001;
            }

            .main-nav.open {
                right: 0;
            }

            .main-nav .nav-list {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                width: 100%;
                margin-bottom: 40px;
            }

            .main-nav .nav-item a {
                font-size: 18px;
                padding: 12px 0;
                border-radius: 0;
                width: 100%;
            }

            .main-nav .nav-item a:hover,
            .main-nav .nav-item a.active {
                background: none;
                color: var(--primary);
            }

            .nav-cta {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
            }

            .hamburger {
                display: flex;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            padding: 120px 0 100px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 61, 199, 0.75) 60%, rgba(124, 58, 237, 0.7) 100%);
            z-index: 1;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
            top: -200px;
            right: -200px;
            z-index: 1;
        }

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

        .hero-content {
            max-width: 720px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(10px);
            border-radius: 100px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 28px;
            color: rgba(255, 255, 255, 0.95);
        }

        .hero-badge i {
            color: rgba(255, 255, 255, 0.8);
        }

        .hero-title {
            font-size: 62px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -2px;
            margin-bottom: 24px;
            color: #fff;
            text-shadow: 0 4px 40px rgba(0, 0, 0, 0.3);
        }

        .hero-text {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 40px;
            max-width: 600px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: 100px;
            border: none;
            cursor: pointer;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(99, 102, 241, 0.5);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            backdrop-filter: blur(8px);
        }

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
        }

        .btn-light:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat .num {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            letter-spacing: -1px;
        }

        .hero-stat .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

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

        .card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-sm);
        }

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

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

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.4) 0%, transparent 40%);
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .card:hover .card-cover::after {
            opacity: 1;
        }

        .card-body {
            padding: 28px;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
        }

        .card-title {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--dark);
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

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

        .card-text {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 16px;
        }

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

        .card-link i {
            transition: transform 0.3s ease;
        }

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

        /* Feature Section */
        .feature-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }

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

        .feature-item {
            padding: 36px;
            border-radius: var(--radius-lg);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all 0.4s ease;
        }

        .feature-item:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
        }

        .feature-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .feature-item p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Category Cards */
        .category-section {
            background: var(--bg);
        }

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

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            display: block;
        }

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

        .category-card .category-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }

        .category-card .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .category-card:hover .category-cover img {
            transform: scale(1.08);
        }

        .category-card .category-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--dark) 0%, transparent 60%);
            z-index: 1;
        }

        .category-card .category-info {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            z-index: 2;
            color: #fff;
        }

        .category-card .category-info h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-card .category-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .category-card .category-meta {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* Content List */
        .content-section {
            background: var(--bg-white);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .content-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            border-radius: var(--radius-md);
            background: var(--bg);
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        .content-item:hover {
            border-color: var(--primary);
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
        }

        .content-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-soft);
        }

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

        .content-item:hover .content-thumb img {
            transform: scale(1.05);
        }

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

        .content-category {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 100px;
            margin-bottom: 8px;
        }

        .content-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 6px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .content-title:hover {
            color: var(--primary);
        }

        .content-excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            margin-bottom: 8px;
        }

        .content-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .content-meta i {
            font-size: 12px;
        }

        /* Statistics */
        .stats-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 91, 253, 0.3), transparent 70%);
            top: -150px;
            right: -100px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }

        .stat-block {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
            transition: all 0.4s ease;
        }

        .stat-block:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Steps */
        .steps-section {
            background: var(--bg);
        }

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

        .step-item {
            position: relative;
            padding: 40px 32px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            transition: all 0.4s ease;
        }

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

        .step-number {
            font-size: 56px;
            font-weight: 900;
            line-height: 1;
            color: var(--primary-light);
            margin-bottom: 16px;
            transition: color 0.4s ease;
        }

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

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: all 0.3s ease;
            overflow: hidden;
        }

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

        .faq-header {
            padding: 22px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-header .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-body {
            padding: 0 28px 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }

        .faq-item.active .faq-body {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            top: -200px;
            right: -100px;
        }

        .cta-inner {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            line-height: 1.8;
        }

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

        .cta-actions .btn-light {
            padding: 16px 40px;
            font-size: 16px;
        }

        .cta-actions .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            padding: 16px 40px;
            font-size: 16px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

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

        .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            margin-top: 16px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 4px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all 0.3s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 6px;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-soft);
        }

        ::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .section {
                padding: 70px 0;
            }
            .section-title {
                font-size: 32px;
            }
            .cards-grid,
            .category-grid,
            .feature-grid,
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 44px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stat .num {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 55px 0;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 36px;
            }
            .section-title {
                font-size: 28px;
            }
            .hero-title {
                font-size: 36px;
                letter-spacing: -1px;
            }
            .hero-text {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .cards-grid,
            .category-grid {
                grid-template-columns: 1fr;
            }
            .feature-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-number {
                font-size: 32px;
            }
            .content-item {
                flex-direction: column;
            }
            .content-thumb {
                width: 100%;
                height: 180px;
            }
            .cta-inner h2 {
                font-size: 30px;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero {
                padding: 90px 0 70px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 20px;
            }
            .section-title {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .content-thumb {
                height: 140px;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-in-up {
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* Focus States */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(59, 91, 253, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Utility */
        .text-center {
            text-align: center;
        }

        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mt-4 {
            margin-top: 32px;
        }

/* roulang page: category1 */
:root {
            --primary: #2a3b63;
            --primary-light: #3b4f7e;
            --accent: #ff6b4a;
            --accent-hover: #f55432;
            --grad-main: linear-gradient(135deg, #1d2b4e 0%, #2a3b63 60%, #344b7a 100%);
            --bg: #f5f7fc;
            --card-bg: #ffffff;
            --text: #1f2937;
            --text-light: #6b7280;
            --text-weak: #9ca3af;
            --border: #e7eaf2;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 12px 40px rgba(42, 59, 99, 0.08);
            --shadow-hover: 0 20px 50px rgba(42, 59, 99, 0.14);
            --space-section: 5.5rem;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html { scroll-behavior: smooth; font-size: 16px; }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a { text-decoration: none; color: inherit; transition: color 0.25s ease; }

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

        h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.35; margin: 0 0 0.5em; color: var(--text); }

        h1 { font-size: 2.6rem; letter-spacing: 0.02em; }
        h2 { font-size: 2.1rem; margin-bottom: 0.8em; }
        h3 { font-size: 1.3rem; }

        p { margin: 0 0 1em; }

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

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

        .section-alt { background: #ffffff; }

        .section-head {
            max-width: 680px;
            margin: 0 auto 3.2rem;
            text-align: center;
        }

        .section-head .subtitle {
            display: inline-block;
            background: rgba(255, 107, 74, 0.1);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.35rem 1.2rem;
            border-radius: 100px;
            letter-spacing: 0.06em;
            margin-bottom: 1.2rem;
        }

        .section-head h2 { font-size: 2rem; margin-bottom: 0.6rem; }

        .section-head p { color: var(--text-light); font-size: 1.05rem; }

        /* ====== 导航 ====== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(16px);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(231, 234, 242, 0.7);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled { box-shadow: 0 8px 40px rgba(31, 41, 55, 0.1); }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 2rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: var(--grad-main);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            box-shadow: 0 8px 20px rgba(42, 59, 99, 0.3);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-item a {
            display: inline-block;
            padding: 0.5rem 1.05rem;
            border-radius: 100px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            transition: all var(--transition);
        }

        .nav-item a:hover { background: rgba(42, 59, 99, 0.08); color: var(--primary); }

        .nav-item a.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(42, 59, 99, 0.28);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--accent);
            color: #fff;
            padding: 0.55rem 1.3rem;
            border-radius: 100px;
            font-size: 0.92rem;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(255, 107, 74, 0.3);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(255, 107, 74, 0.4); }

        .mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            background: rgba(42, 59, 99, 0.08);
            border-radius: 12px;
            font-size: 1.2rem;
            color: var(--primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background 0.3s;
        }

        .mobile-toggle:hover { background: rgba(42, 59, 99, 0.14); }

        /* ====== 分类页 Banner ====== */
        .page-banner {
            position: relative;
            padding: 12rem 0 6rem;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            isolation: isolate;
            overflow: hidden;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(20, 32, 58, 0.92) 0%, rgba(35, 52, 92, 0.78) 55%, rgba(60, 82, 130, 0.55) 100%);
            z-index: -1;
        }

        .page-banner .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.45rem 1.2rem;
            border-radius: 100px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 1.6rem;
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
        }

        .page-banner .breadcrumb a:hover { color: #fff; }

        .page-banner .breadcrumb i { font-size: 0.7rem; color: rgba(255, 255, 255, 0.5); }

        .page-banner h1 {
            color: #ffffff;
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .page-banner .banner-desc {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 640px;
            line-height: 1.8;
        }

        .banner-search {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(255, 255, 255, 0.96);
            border-radius: 60px;
            padding: 0.45rem 0.45rem 0.45rem 1.5rem;
            max-width: 540px;
            margin-top: 2.2rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
        }

        .banner-search i { color: var(--text-weak); }

        .banner-search input {
            flex: 1;
            border: none;
            outline: none;
            font-size: 0.95rem;
            background: transparent;
            padding: 0.6rem 0;
        }

        .banner-search button {
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: 60px;
            padding: 0.7rem 1.8rem;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.3s;
            white-space: nowrap;
        }

        .banner-search button:hover { background: var(--accent-hover); }

        /* ====== 概览卡片 ====== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: -2.5rem;
            position: relative;
            z-index: 2;
        }

        .overview-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2.2rem 1.8rem;
            box-shadow: var(--shadow);
            border: 1px solid rgba(231, 234, 242, 0.6);
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }

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

        .overview-card .card-icon {
            width: 58px;
            height: 58px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 1.4rem;
            box-shadow: 0 10px 22px rgba(42, 59, 99, 0.18);
        }

        .overview-card:nth-child(1) .card-icon { background: linear-gradient(135deg, #3b4f7e, #5b6fa8); }
        .overview-card:nth-child(2) .card-icon { background: linear-gradient(135deg, #ff6b4a, #ff9a76); }
        .overview-card:nth-child(3) .card-icon { background: linear-gradient(135deg, #14b8a6, #2dd4bf); }

        .overview-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

        .overview-card p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 0.8rem; }

        .overview-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.82rem;
            color: var(--text-weak);
        }

        /* ====== 内容列表 ====== */
        .content-list {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }

        .content-card {
            display: flex;
            align-items: stretch;
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.6rem;
            box-shadow: var(--shadow);
            border: 1px solid rgba(231, 234, 242, 0.5);
            transition: transform var(--transition), box-shadow var(--transition);
            gap: 1.8rem;
            overflow: hidden;
        }

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

        .content-card .card-thumb {
            width: 280px;
            min-height: 200px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
            background: #eef1f8;
        }

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

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

        .content-card .card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 0.4rem 0; }

        .card-tags { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: rgba(42, 59, 99, 0.08);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.85rem;
            border-radius: 100px;
        }

        .tag-hot { background: rgba(255, 107, 74, 0.12); color: var(--accent); }

        .content-card h3 { font-size: 1.35rem; margin-bottom: 0.5rem; }

        .content-card h3 a:hover { color: var(--accent); }

        .content-card .card-excerpt { color: var(--text-light); font-size: 0.95rem; line-height: 1.8; margin-bottom: 1rem; }

        .card-info {
            display: flex;
            align-items: center;
            gap: 1.4rem;
            font-size: 0.85rem;
            color: var(--text-weak);
        }

        .card-info span { display: inline-flex; align-items: center; gap: 0.35rem; }

        .card-info .read-more {
            margin-left: auto;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap 0.3s, color 0.3s;
        }

        .card-info .read-more:hover { color: var(--accent); gap: 0.7rem; }

        /* ====== 流程步骤 ====== */
        .steps-section {
            background: var(--grad-main);
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            top: -200px;
            right: -150px;
        }

        .steps-section .section-head h2 { color: #ffffff; }

        .steps-section .section-head p { color: rgba(255, 255, 255, 0.7); }

        .steps-section .section-head .subtitle { background: rgba(255, 255, 255, 0.15); color: #ffffff; }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.8rem;
            position: relative;
            z-index: 2;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: transform var(--transition), background var(--transition);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.16);
            transform: translateY(-6px);
        }

        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 1.2rem;
            border-radius: 50%;
            background: #fff;
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
        }

        .step-card h3 { color: #fff; font-size: 1.1rem; margin-bottom: 0.5rem; }

        .step-card p { color: rgba(255, 255, 255, 0.75); font-size: 0.88rem; margin-bottom: 0; }

        /* ====== 资源列表 ====== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .resource-item {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            background: var(--card-bg);
            border-radius: var(--radius-sm);
            padding: 1.4rem 1.5rem;
            box-shadow: 0 6px 20px rgba(42, 59, 99, 0.06);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .resource-item:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: rgba(42, 59, 99, 0.2); }

        .resource-icon {
            width: 48px;
            height: 48px;
            flex-shrink: 0;
            border-radius: 14px;
            background: rgba(42, 59, 99, 0.08);
            color: var(--primary);
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s, color 0.3s;
        }

        .resource-item:hover .resource-icon { background: var(--primary); color: #fff; }

        .resource-item h4 { font-size: 1.05rem; margin-bottom: 0.2rem; }

        .resource-item p { color: var(--text-light); font-size: 0.85rem; margin-bottom: 0; line-height: 1.5; }

        .resource-item span { font-size: 0.75rem; color: var(--text-weak); }

        /* ====== FAQ ====== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

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

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

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.3rem 1.6rem;
            font-weight: 700;
            font-size: 1.02rem;
            cursor: pointer;
            color: var(--text);
            list-style: none;
            transition: color 0.3s;
        }

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

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

        .faq-item summary i {
            font-size: 0.9rem;
            color: var(--accent);
            transition: transform 0.3s;
            flex-shrink: 0;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 107, 74, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .faq-item .faq-body { padding: 0 1.6rem 1.4rem; color: var(--text-light); font-size: 0.95rem; line-height: 1.8; }

        /* ====== CTA ====== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            padding: 6rem 0;
            isolation: isolate;
            text-align: center;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(42, 59, 99, 0.94), rgba(29, 43, 78, 0.88));
            z-index: -1;
        }

        .cta-section h2 { color: #fff; font-size: 2.2rem; max-width: 640px; margin: 0 auto 1rem; }

        .cta-section p { color: rgba(255, 255, 255, 0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #fff;
            padding: 0.9rem 2.2rem;
            border-radius: 60px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 12px 34px rgba(255, 107, 74, 0.4);
            transition: all var(--transition);
        }

        .cta-btn:hover { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 18px 44px rgba(255, 107, 74, 0.5); }

        .cta-note { margin-top: 1.2rem; font-size: 0.85rem; color: rgba(255, 255, 255, 0.5); }

        /* ====== 页脚 ====== */
        .site-footer {
            background: #101a30;
            color: rgba(255, 255, 255, 0.65);
            padding: 4.5rem 0 2rem;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 3rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo { color: #fff; margin-bottom: 1.2rem; }

        .footer-brand .logo .logo-icon { background: rgba(255, 255, 255, 0.12); color: #fff; box-shadow: none; }

        .footer-brand p { margin-bottom: 0; line-height: 1.8; }

        .footer-title {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
        }

        .footer-links { display: flex; flex-direction: column; gap: 0.7rem; }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-links a:hover { color: #fff; padding-left: 6px; }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding-top: 2rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom p { margin: 0; }

        /* ====== 响应式 ====== */
        @media screen and (max-width: 1024px) {
            .overview-grid { grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
            .steps-grid { grid-template-columns: repeat(4, 1fr); gap: 1rem; }
            .cards-3 { grid-template-columns: repeat(2, 1fr); }
            .content-card .card-thumb { width: 220px; min-height: 180px; }
        }

        @media screen and (max-width: 768px) {
            .section { padding: 4rem 0; }
            h2 { font-size: 1.7rem; }
            .page-banner h1 { font-size: 2.2rem; }

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

            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                max-height: calc(100vh - 72px);
                overflow-y: auto;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 1.5rem 2rem 2rem;
                box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
                gap: 1.2rem;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: all 0.3s ease;
            }

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

            .nav-list { flex-direction: column; align-items: stretch; gap: 0.4rem; }

            .nav-item a { display: block; padding: 0.8rem 1.2rem; border-radius: 12px; }

            .nav-cta { justify-content: center; }

            .overview-grid { grid-template-columns: 1fr; gap: 1rem; }

            .content-card { flex-direction: column; padding: 1.2rem; }

            .content-card .card-thumb { width: 100%; min-height: 200px; }

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

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

            .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }

            .cta-section { padding: 4.5rem 0; }
        }

        @media screen and (max-width: 520px) {
            .header-inner { height: 64px; }

            .logo span:last-child { font-size: 1rem; }
            .logo-icon { width: 38px; height: 38px; }

            .main-nav { top: 64px; padding: 1.2rem 1.2rem 1.5rem; }

            .page-banner { padding: 8rem 0 4rem; }

            .page-banner h1 { font-size: 1.8rem; }

            .page-banner .banner-desc { font-size: 1rem; }

            .banner-search {
                flex-wrap: wrap;
                border-radius: 18px;
                padding: 0.7rem;
            }

            .banner-search input { flex-basis: calc(100% - 2rem); border-radius: 12px; background: #f3f4f8; padding: 0.7rem 1rem; margin-bottom: 0.5rem; }

            .banner-search button { width: 100%; border-radius: 12px; justify-content: center; }

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

            .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }

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

            .section-head h2 { font-size: 1.6rem; }

            .card-info { flex-wrap: wrap; gap: 0.6rem; }

            .card-info .read-more { margin-left: 0; }
        }

/* roulang page: category2 */
:root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --primary-dark: #1d4ed8;
            --accent: #28527a;
            --accent-light: #f97316;
            --bg: #f8fafc;
            --bg-alt: #0f172a;
            --surface: #ffffff;
            --surface-glass: rgba(255, 255, 255, 0.92);
            --text: #0f172a;
            --text-light: #475569;
            --text-faint: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 16px;
            --radius-lg: 24px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 36px rgba(15, 23, 42, 0.12);
            --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

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

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

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

        a:hover {
            color: var(--primary-dark);
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

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

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

        .section-padding {
            padding: 88px 0;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            color: var(--text-light);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 600;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .badge-secondary {
            background: rgba(249, 115, 22, 0.1);
            color: var(--accent-light);
            border-color: rgba(249, 115, 22, 0.2);
        }

        /* ===== Header Nav ===== */
        .main-header {
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 14px 0;
            box-shadow: 0 1px 16px rgba(15, 23, 42, 0.04);
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

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

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .nav-item a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 9999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }

        .nav-item a:hover {
            background: rgba(37, 99, 235, 0.06);
            color: var(--primary);
        }

        .nav-item a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.28);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 9999px;
            background: var(--accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
        }

        .hamburger {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--border-light);
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
            color: var(--text);
        }

        .hamburger:hover {
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
        }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            z-index: 1;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.4) 100%);
            z-index: 2;
        }

        .page-hero .container {
            position: relative;
            z-index: 3;
        }

        .page-hero .badge {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            color: #fff;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            max-width: 700px;
        }

        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
        }

        .hero-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 9999px;
            backdrop-filter: blur(10px);
        }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 40px;
        }

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

        .category-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.2);
        }

        .category-card .category-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
        }

        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .category-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }

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

        .card-tag {
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 9999px;
            background: var(--border-light);
            color: var(--text-light);
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 20px;
            transition: var(--transition);
        }

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

        /* ===== Content Cards ===== */
        .content-card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .content-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }

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

        .content-card:hover .card-img img {
            transform: scale(1.04);
        }

        .card-img-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

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

        .content-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-faint);
            margin-bottom: 12px;
        }

        .content-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .content-card h3 a {
            color: var(--text);
        }

        .content-card h3 a:hover {
            color: var(--primary);
        }

        .content-card .card-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .content-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-faint);
        }

        .card-user-info {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
        }

        .card-user-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
        }

        .card-stats {
            display: flex;
            gap: 14px;
            font-size: 13px;
        }

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

        /* ===== Featured Section ===== */
        .featured-section {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            margin: 40px 0;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 0;
            border: 1px solid var(--border-light);
        }

        .featured-media {
            position: relative;
            min-height: 360px;
            overflow: hidden;
        }

        .featured-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .featured-media .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 72px;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        .featured-media .play-btn:hover {
            transform: translate(-50%, -50%) scale(1.08);
            box-shadow: 0 12px 40px rgba(37, 99, 235, 0.4);
        }

        .featured-content {
            padding: 48px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .featured-content .badge {
            margin-bottom: 16px;
            align-self: flex-start;
        }

        .featured-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .featured-content p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .featured-list {
            margin-bottom: 24px;
        }

        .featured-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: var(--text-light);
        }

        .featured-list li i {
            color: var(--primary);
            margin-top: 4px;
        }

        /* ===== Data / Stats Section ===== */
        .stats-section {
            background: var(--bg-alt);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.88);
        }

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

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stats-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stats-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }

        .stats-item i {
            font-size: 32px;
            color: var(--accent-light);
            margin-bottom: 16px;
        }

        .stats-item .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stats-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Timeline / Process ===== */
        .timeline-section {
            background: var(--bg);
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 40px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, transparent, var(--border), var(--border), transparent);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            display: flex;
            margin-bottom: 48px;
            align-items: flex-start;
        }

        .timeline-item:nth-child(odd) {
            flex-direction: row-reverse;
            text-align: left;
        }

        .timeline-item .timeline-content {
            width: calc(50% - 32px);
            background: var(--surface);
            padding: 28px;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .timeline-item .timeline-dot {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
            position: absolute;
            left: 50%;
            top: 36px;
            transform: translateX(-50%);
            z-index: 2;
        }

        .timeline-item .timeline-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

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

        /* ===== Quote / User Experience ===== */
        .quote-section {
            background: linear-gradient(135deg, #f0f5ff, #ffffff, #fcf4ff);
            padding: 88px 0;
        }

        .quote-card {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 48px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            position: relative;
        }

        .quote-card::before {
            content: '\201C';
            position: absolute;
            top: -20px;
            left: 40px;
            font-size: 120px;
            color: rgba(37, 99, 235, 0.1);
            line-height: 1;
            z-index: 0;
        }

        .quote-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            font-size: 24px;
            color: #fff;
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
        }

        .quote-text {
            font-size: 22px;
            line-height: 1.8;
            color: var(--text);
            font-weight: 500;
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }

        .quote-user {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .quote-user img {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
        }

        .quote-user-name {
            font-weight: 600;
            font-size: 15px;
        }

        .quote-user-desc {
            font-size: 13px;
            color: var(--text-faint);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            padding: 72px 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.85);
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 9999px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: #fff;
            color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--bg);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }

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

        /* ===== Accordion / FAQ ===== */
        .faq-section {
            background: var(--bg);
        }

        .accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .accordion-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-hover);
        }

        .accordion-header {
            padding: 22px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            user-select: none;
        }

        .accordion-header:hover {
            color: var(--primary);
        }

        .accordion-header i {
            font-size: 14px;
            color: var(--text-faint);
            transition: var(--transition);
        }

        .accordion-item.active .accordion-header i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .accordion-content p {
            padding: 0 24px 24px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Newsletter Form ===== */
        .newsletter-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
        }

        .newsletter-form input {
            flex: 1;
            padding: 14px 20px;
            border-radius: 9999px;
            border: 1px solid var(--border);
            background: var(--surface);
            font-size: 15px;
            color: var(--text);
            transition: var(--transition);
        }

        .newsletter-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }

        .newsletter-form button {
            padding: 14px 28px;
            border-radius: 9999px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .newsletter-form button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
        }

        /* ===== Search Section ===== */
        .search-section {
            background: var(--surface);
            padding: 40px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .search-box {
            max-width: 620px;
            margin: 0 auto;
            position: relative;
        }

        .search-box input {
            width: 100%;
            padding: 16px 24px 16px 52px;
            border-radius: 9999px;
            border: 2px solid var(--border);
            background: var(--bg);
            font-size: 15px;
            transition: var(--transition);
        }

        .search-box input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
        }

        .search-box i {
            position: absolute;
            left: 22px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-faint);
            font-size: 16px;
        }

        /* ===== Tag Cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 24px;
        }

        .tag-cloud a {
            padding: 8px 18px;
            border-radius: 9999px;
            background: var(--surface);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-alt);
            color: rgba(255, 255, 255, 0.8);
            padding: 72px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            margin-top: 16px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 32px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Mobile Responsive ===== */
        @media screen and (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .section-title {
                font-size: 30px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media screen and (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }

            .main-header .container {
                flex-wrap: wrap;
            }

            .hamburger {
                display: flex;
                margin-left: auto;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 0;
                gap: 12px;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .nav-item a {
                border-radius: 10px;
                padding: 12px 16px;
                justify-content: center;
            }

            .nav-cta {
                justify-content: center;
                border-radius: 10px;
            }

            .page-hero {
                padding: 72px 0 60px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero p {
                font-size: 16px;
            }

            .card-grid,
            .card-grid.cols-2 {
                grid-template-columns: 1fr;
            }

            .featured-section {
                grid-template-columns: 1fr;
            }

            .featured-media {
                min-height: 240px;
            }

            .featured-content {
                padding: 32px 24px;
            }

            .quote-text {
                font-size: 18px;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item,
            .timeline-item:nth-child(odd) {
                flex-direction: column;
                padding-left: 48px;
                text-align: left !important;
            }

            .timeline-item .timeline-content {
                width: 100%;
            }

            .timeline-item .timeline-dot {
                left: 20px;
            }

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

            .newsletter-form {
                flex-direction: column;
            }

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

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

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

            .logo {
                font-size: 16px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

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

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

            .hero-meta {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .quote-card {
                padding: 32px 20px;
            }

            .quote-text {
                font-size: 16px;
            }

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

        /* ===== Focus visible accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
            --primary: #1476a8;
            --primary-dark: #0a4e78;
            --primary-light: #dff1fa;
            --secondary: #f0a530;
            --secondary-dark: #d4881a;
            --dark: #0c2233;
            --dark-2: #123f5c;
            --bg-main: #f4f7fa;
            --bg-card: #ffffff;
            --text-main: #1e2a33;
            --text-weak: #6d7f8e;
            --border: #e2e9f0;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-full: 999px;
            --shadow-sm: 0 2px 10px rgba(12, 34, 51, .06);
            --shadow-md: 0 8px 30px rgba(12, 34, 51, .09);
            --shadow-lg: 0 20px 60px rgba(12, 34, 51, .14);
            --space-section: 88px;
        }

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

        html { scroll-behavior: smooth; }

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-main);
            color: var(--text-main);
            line-height: 1.6;
            font-size: 16px;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
        a:hover { color: var(--primary-dark); }
        ul, ol { margin: 0; padding: 0; list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 36, 55, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.22rem;
            font-weight: 800;
            color: #fff;
            white-space: nowrap;
            letter-spacing: .5px;
        }
        .logo:hover { color: #fff; }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--secondary), #ff7a45);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            color: #fff;
            box-shadow: 0 4px 16px rgba(240, 165, 48, .4);
        }
        .main-nav { display: flex; align-items: center; gap: 10px; }
        .nav-list { display: flex; align-items: center; gap: 4px; }
        .nav-item a {
            display: block;
            padding: 9px 18px;
            border-radius: 999px;
            color: rgba(255, 255, 255, .82);
            font-weight: 600;
            font-size: .94rem;
            transition: all .25s ease;
        }
        .nav-item a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .1);
        }
        .nav-item a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(20, 118, 168, .35);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--secondary), #ff7a45);
            color: #fff;
            font-weight: 700;
            font-size: .9rem;
            white-space: nowrap;
            box-shadow: 0 6px 22px rgba(240, 165, 48, .35);
            transition: all .3s ease;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(240, 165, 48, .45);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            padding: 8px 10px;
            cursor: pointer;
            border-radius: 8px;
        }
        .nav-toggle:hover { background: rgba(255, 255, 255, .08); }
        .nav-toggle:focus { outline: 3px solid rgba(255, 255, 255, .25); }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 90px 0 70px;
            color: #fff;
            overflow: hidden;
        }
        .article-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(140deg, rgba(8, 30, 45, .94), rgba(12, 52, 78, .82)), radial-gradient(circle at 80% 20%, rgba(20, 118, 168, .3), transparent 60%);
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .72);
            margin-bottom: 22px;
        }
        .breadcrumb a { color: rgba(255, 255, 255, .78); transition: color .2s ease; }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb .current { color: rgba(255, 255, 255, .55); }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 165, 48, .18);
            border: 1px solid rgba(240, 165, 48, .5);
            color: #ffd28f;
            font-size: .82rem;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .category-badge i { font-size: .75rem; }
        .article-hero h1 {
            font-size: clamp(1.7rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 16px;
            max-width: 860px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .2);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: .92rem;
            color: rgba(255, 255, 255, .78);
        }
        .hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
        .hero-meta i { color: rgba(240, 165, 48, .9); }

        /* ===== 正文区 ===== */
        .article-main-section {
            padding: var(--space-section) 0 0;
            background: var(--bg-main);
        }
        .article-content-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 44px 48px;
        }
        .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 34px;
            box-shadow: var(--shadow-md);
        }
        .article-cover img { width: 100%; height: auto; object-fit: cover; }

        .article-body {
            font-size: 1.03rem;
            line-height: 1.9;
            color: #2c3a46;
        }
        .article-body p { margin: 0 0 1.45em; }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 1.6em 0 .8em;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            color: var(--dark);
        }
        .article-body h3 {
            font-size: 1.22rem;
            font-weight: 700;
            margin: 1.4em 0 .6em;
            color: var(--dark);
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.4em;
            padding-left: 1.6em;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: .5em; }
        .article-body blockquote {
            margin: 1.6em 0;
            padding: 18px 24px;
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--primary-dark);
            font-style: normal;
        }
        .article-body a { text-decoration: underline; text-underline-offset: 3px; }
        .article-body img { border-radius: var(--radius-md); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
        .article-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; }
        .article-body th, .article-body td { padding: 10px 14px; border: 1px solid var(--border); text-align: left; }
        .article-body th { background: var(--primary-light); color: var(--primary-dark); font-weight: 700; }

        .article-bottom-tools {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            margin-top: 36px;
            padding-top: 26px;
            border-top: 1px solid var(--border);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .82rem;
            font-weight: 600;
            transition: all .25s ease;
        }
        .tag:hover { background: var(--primary); color: #fff; }
        .copy-link-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: none;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: .85rem;
            font-weight: 600;
            color: var(--text-weak);
            cursor: pointer;
            transition: all .3s ease;
        }
        .copy-link-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .copy-link-btn:focus { outline: 3px solid rgba(20, 118, 168, .15); }

        /* ===== 侧边栏 ===== */
        .sidebar { padding-left: 4px; }
        .sidebar .cell { margin-bottom: 24px; }
        .widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            margin-bottom: 26px;
            border: 1px solid rgba(226, 233, 240, .6);
        }
        .widget-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.08rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 18px;
        }
        .widget-title i {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: .88rem;
        }
        .widget-text { font-size: .92rem; color: var(--text-weak); line-height: 1.7; margin-bottom: 14px; }
        .widget-list li { border-bottom: 1px solid var(--border); }
        .widget-list li:last-child { border-bottom: none; }
        .widget-list a {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 11px 0;
            color: var(--text-main);
            font-size: .92rem;
            font-weight: 500;
            line-height: 1.45;
            transition: all .25s ease;
        }
        .widget-list a:hover { color: var(--primary); padding-left: 4px; }
        .widget-list .time {
            font-size: .78rem;
            color: var(--text-weak);
            font-weight: 400;
            white-space: nowrap;
            margin-top: 2px;
        }
        .widget-cats li { margin-bottom: 10px; }
        .widget-cats a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 16px;
            background: var(--bg-main);
            border-radius: var(--radius-md);
            color: var(--text-main);
            font-weight: 600;
            font-size: .9rem;
            border: 1px solid transparent;
            transition: all .25s ease;
        }
        .widget-cats a:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
            border-color: var(--primary);
        }
        .widget-cats a i { font-size: .8rem; opacity: .7; }

        .widget-ad-card {
            background: linear-gradient(135deg, var(--dark), var(--dark-2));
            border-radius: var(--radius-md);
            padding: 26px 22px;
            color: rgba(255, 255, 255, .88);
            margin-bottom: 26px;
            position: relative;
            overflow: hidden;
        }
        .widget-ad-card::after {
            content: "";
            position: absolute;
            right: -30px;
            top: -30px;
            width: 110px;
            height: 110px;
            border-radius: 50%;
            background: rgba(240, 165, 48, .15);
        }
        .widget-ad-card h4 { color: #fff; font-size: 1.05rem; margin-bottom: 8px; }
        .widget-ad-card p { font-size: .88rem; line-height: 1.6; margin-bottom: 16px; }
        .widget-ad-card .btn {
            background: var(--secondary);
            color: #fff;
            padding: 8px 18px;
            font-size: .84rem;
        }
        .widget-ad-card .btn:hover { background: #ffb84d; }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: var(--space-section) 0;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 18px;
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0;
        }
        .section-head .section-sub {
            color: var(--text-weak);
            font-size: .94rem;
            max-width: 400px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .rel-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(226, 233, 240, .7);
            box-shadow: var(--shadow-sm);
            transition: all .35s ease;
        }
        .rel-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .rel-card-cover {
            position: relative;
            overflow: hidden;
            height: 168px;
        }
        .rel-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .rel-card:hover .rel-card-cover img { transform: scale(1.05); }
        .rel-card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10, 30, 45, .6));
        }
        .rel-card-cat {
            position: absolute;
            left: 14px;
            bottom: 12px;
            z-index: 2;
            background: rgba(240, 165, 48, .92);
            color: #fff;
            font-size: .72rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
        }
        .rel-card-body { padding: 18px 18px 20px; }
        .rel-card-body h3 { font-size: .98rem; line-height: 1.5; margin: 0 0 8px; color: var(--dark); }
        .rel-card-body h3 a { color: var(--dark); transition: color .25s ease; }
        .rel-card-body h3 a:hover { color: var(--primary); }
        .rel-card-body p {
            font-size: .84rem;
            color: var(--text-weak);
            line-height: 1.6;
            margin: 0 0 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rel-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: .78rem;
            color: var(--text-weak);
        }
        .rel-card-meta i { margin-right: 4px; color: var(--primary); }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 84px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
        }
        .cta-section .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 30, 45, .92), rgba(14, 55, 82, .86));
        }
        .cta-inner { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; }
        .cta-inner h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin: 0 0 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            font-size: 1rem;
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 13px 30px;
            border-radius: 999px;
            font-weight: 700;
            font-size: .95rem;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            text-decoration: none;
        }
        .btn:focus { outline: 3px solid rgba(20, 118, 168, .25); }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1d9ed0);
            color: #fff;
            box-shadow: 0 8px 24px rgba(20, 118, 168, .35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 34px rgba(20, 118, 168, .45);
            color: #fff;
        }
        .btn-ghost-light {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .45);
            color: #fff;
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== 内容未找到 ===== */
        .not-found-panel {
            text-align: center;
            padding: 80px 30px;
        }
        .not-found-panel .nf-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 24px;
            border-radius: 24px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .not-found-panel h2 { font-size: 1.5rem; color: var(--dark); margin-bottom: 10px; }
        .not-found-panel p { color: var(--text-weak); margin-bottom: 26px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: .9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
            margin: 0;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a {
            color: rgba(255, 255, 255, .6);
            font-size: .9rem;
            transition: color .25s ease, padding-left .25s ease;
        }
        .footer-links a:hover { color: var(--secondary); padding-left: 5px; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 22px 0;
            font-size: .84rem;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom p { margin: 0; }

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

        @media screen and (max-width: 768px) {
            :root { --space-section: 64px; }
            .nav-toggle { display: block; }
            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                align-items: stretch;
                padding: 14px 20px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
                box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
                display: none;
            }
            .main-nav.nav-open { display: flex; }
            .nav-list { flex-direction: column; gap: 4px; }
            .nav-item a { padding: 12px 16px; text-align: center; }
            .nav-cta { justify-content: center; margin-top: 8px; }
            .article-hero { padding: 60px 0 44px; }
            .article-content-wrap { padding: 28px 20px; }
            .sidebar { padding-left: 0; margin-top: 28px; }
            .related-grid { grid-template-columns: 1fr; }
            .cta-section { padding: 56px 0; }
            .cta-inner h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media screen and (max-width: 520px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .header-inner { height: 64px; }
            .logo { font-size: 1rem; }
            .logo-icon { width: 34px; height: 34px; font-size: .9rem; }
            .article-hero h1 { font-size: 1.4rem; }
            .related-grid { grid-template-columns: 1fr; }
            .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
            .article-bottom-tools { flex-direction: column; align-items: flex-start; }
            .footer-grid { grid-template-columns: 1fr; }
        }

/* roulang page: category3 */
/* ========== 设计系统变量 ========== */
        :root {
            --primary: #0e7c86;
            --primary-dark: #0a5c66;
            --primary-light: #d4efef;
            --accent: #ffb347;
            --accent-dark: #e8891a;
            --bg: #f7f5f1;
            --bg-white: #ffffff;
            --dark: #102a43;
            --dark-soft: #1c3d5a;
            --text: #1f2d3d;
            --text-muted: #62748c;
            --border: #e2e8f0;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(16, 42, 67, 0.05);
            --shadow-md: 0 8px 28px rgba(16, 42, 67, 0.08);
            --shadow-lg: 0 18px 48px rgba(16, 42, 67, 0.14);
            --transition: all 0.25s ease-in-out;
        }

        /* ========== 基础重置 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ========== 头部导航 ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.18rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 14px rgba(14, 124, 134, 0.32);
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 22px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-item a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .nav-item a:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        .nav-item a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(14, 124, 134, 0.28);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #222;
            font-weight: 600;
            font-size: 0.92rem;
            box-shadow: 0 4px 16px rgba(255, 179, 71, 0.35);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(255, 179, 71, 0.45);
            color: #111;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text);
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
        }

        /* ========== Hero 横幅 ========== */
        .page-hero {
            position: relative;
            padding: 84px 0 64px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 28, 44, 0.88), rgba(14, 124, 134, 0.74));
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.28);
            font-size: 0.85rem;
            letter-spacing: 0.04em;
            backdrop-filter: blur(6px);
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .page-hero p {
            max-width: 640px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.98rem;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--accent);
            color: #222;
            box-shadow: 0 6px 18px rgba(255, 179, 71, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 179, 71, 0.42);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.55);
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(4px);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
            border-color: #fff;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 72px 0;
        }

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

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 18px;
            margin-bottom: 38px;
        }

        .section-head h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.3;
            color: var(--text);
        }

        .section-head .sub-text {
            color: var(--text-muted);
            margin-top: 8px;
            font-size: 0.98rem;
            line-height: 1.7;
            max-width: 560px;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.92rem;
            padding: 8px 14px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #fff;
            transition: var(--transition);
        }

        .section-link:hover {
            border-color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ========== 精选分享卡片 ========== */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .feature-card .cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .feature-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .cover-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(14, 124, 134, 0.92);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .feature-card .body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .feature-card .meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.75rem;
        }

        .feature-card .body h3 {
            font-size: 1.14rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
        }

        .feature-card .body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        /* ========== 数据面板 ========== */
        .stats-section {
            position: relative;
            background: var(--dark) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            padding: 76px 0;
            color: #fff;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 28, 44, 0.92), rgba(14, 110, 120, 0.8));
        }

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

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

        .stat-item {
            padding: 28px 18px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 6px;
            background: linear-gradient(135deg, #fff, var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.78);
            font-weight: 500;
        }

        /* ========== 热门话题标签 ========== */
        .topic-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .topic-chip {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .topic-chip:hover {
            border-color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .topic-chip .num {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 2px 10px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* ========== 用户分享列表 ========== */
        .share-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .share-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .share-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }

        .avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .share-content {
            flex: 1;
            min-width: 0;
        }

        .share-head {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }

        .share-name {
            font-weight: 700;
            font-size: 1rem;
        }

        .share-stars {
            color: var(--accent-dark);
            font-size: 0.82rem;
            letter-spacing: 2px;
        }

        .share-time {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .share-content p {
            font-size: 0.94rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .share-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 10px;
        }

        .share-tags span {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 0.76rem;
            font-weight: 600;
        }

        /* ========== 阅读推荐列表 ========== */
        .read-list {
            display: flex;
            flex-direction: column;
        }

        .read-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 8px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .read-item:hover {
            background: var(--bg-white);
            padding-left: 16px;
            padding-right: 16px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .read-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

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

        .read-info h3 {
            font-size: 1.02rem;
            font-weight: 600;
            margin-bottom: 3px;
        }

        .read-info p {
            font-size: 0.84rem;
            color: var(--text-muted);
        }

        .read-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-shrink: 0;
            text-align: right;
        }

        /* ========== FAQ 折叠面板 ========== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

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

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

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            font-size: 1rem;
        }

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

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

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

        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.94rem;
            line-height: 1.8;
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 42, 55, 0.92), rgba(14, 124, 134, 0.82));
        }

        .cta-section>* {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.02rem;
            max-width: 600px;
            margin: 0 auto 28px;
            color: rgba(255, 255, 255, 0.88);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #0d2137;
            color: #cbd5e1;
            padding: 60px 0 0;
            margin-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

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

        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #222;
            box-shadow: 0 4px 14px rgba(255, 179, 71, 0.3);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.85;
            color: #94a3b8;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: #8296b0;
        }

        /* ========== 响应式断点 ========== */
        @media screen and (max-width: 1024px) {
            .page-hero {
                padding: 68px 0 54px;
            }

            .page-hero h1 {
                font-size: 2.05rem;
            }

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

        @media screen and (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .logo {
                font-size: 1rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }

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

            .main-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px 20px;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border);
                gap: 14px;
                display: none;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .nav-item a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-md);
            }

            .nav-cta {
                justify-content: center;
            }

            .section {
                padding: 52px 0;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .section-head h2 {
                font-size: 1.55rem;
            }

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

            .stat-number {
                font-size: 2rem;
            }

            .cta-section {
                padding: 44px 24px;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

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

            .page-hero h1 {
                font-size: 1.7rem;
            }

            .page-hero p {
                font-size: 0.96rem;
            }
        }

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

            .page-hero {
                padding: 48px 0 40px;
            }

            .page-hero h1 {
                font-size: 1.4rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

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

            .share-item {
                padding: 16px;
                gap: 12px;
            }

            .avatar {
                width: 42px;
                height: 42px;
                font-size: 0.9rem;
            }

            .share-head {
                gap: 8px;
            }

            .read-item {
                flex-wrap: wrap;
                gap: 10px;
            }

            .read-meta {
                text-align: left;
                width: 100%;
                padding-left: 60px;
            }

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

        /* ========== 可访问性焦点状态 ========== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(14, 124, 134, 0.4);
            outline-offset: 2px;
            border-radius: 6px;
        }