/* roulang page: index */
:root {
            --primary: #1e5eff;
            --primary-dark: #0f3fbf;
            --primary-light: #e8eeff;
            --accent: #ff6a00;
            --accent-light: #fff0e6;
            --dark: #0f172a;
            --text: #334155;
            --text-light: #64748b;
            --bg: #f8fafc;
            --white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -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;
        }

        input,
        textarea {
            font-family: inherit;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: box-shadow 0.35s ease, border-color 0.35s ease;
        }

        .site-header.scrolled {
            border-bottom: 1px solid var(--border);
            box-shadow: 0 6px 30px rgba(15, 23, 42, 0.06);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), #7b5eff);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 16px rgba(30, 94, 255, 0.3);
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            font-size: 15px;
            color: var(--text);
            padding: 9px 18px;
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }

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

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-header {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(30, 94, 255, 0.25);
        }

        .btn-header:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 94, 255, 0.35);
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .mobile-menu {
            display: none;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 16px 24px 12px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            border-radius: 12px;
            font-weight: 500;
            color: var(--text);
            font-size: 15px;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 680px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0b1120 0%, #1e3a5f 55%, #1e5eff33 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 17, 32, 0.7) 0%, rgba(11, 17, 32, 0.3) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding-top: 80px;
            padding-bottom: 80px;
            width: 100%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 7px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            margin-bottom: 24px;
        }

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

        .hero h1 {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.12;
            letter-spacing: -1px;
            margin-bottom: 20px;
            max-width: 580px;
        }

        .hero .subtitle {
            font-size: clamp(15px, 1.8vw, 19px);
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.7;
            max-width: 540px;
            margin-bottom: 36px;
        }

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

        .hero-btn-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.2);
        }

        .hero-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(255, 255, 255, 0.3);
        }

        .hero-btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(8px);
        }

        .hero-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            transform: translateY(-3px);
        }

        .hero-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            padding: 24px;
            backdrop-filter: blur(12px);
            max-width: 420px;
            margin-left: auto;
        }

        .hero-card-title {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .hero-card-number {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-card-list {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hero-card-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 12px 16px;
        }

        .hero-card-item .name {
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 500;
        }

        .hero-card-item .status {
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            background: rgba(255, 106, 0, 0.2);
            padding: 4px 10px;
            border-radius: 50px;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: 80px 0;
        }

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

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 800;
            color: var(--dark);
            margin-top: 14px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .section-desc {
            color: var(--text-light);
            font-size: 16px;
            margin-top: 10px;
            max-width: 600px;
            line-height: 1.7;
        }

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

        /* ===== 核心服务卡片 ===== */
        .service-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 32px 26px;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 18px;
            background: var(--primary-light);
            color: var(--primary);
            transition: var(--transition);
        }

        .service-card:hover .service-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .service-card p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.65;
        }

        /* ===== 分类入口 ===== */
        .category-card {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            background-image: url('/assets/images/coverpic/cover-1.png');
            background-size: cover;
            background-position: center;
            transition: var(--transition);
        }

        .category-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 23, 42, 0.82) 0%, rgba(15, 23, 42, 0.2) 100%);
            transition: var(--transition);
        }

        .category-card:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }

        .category-card-body {
            position: relative;
            z-index: 2;
            padding: 32px;
            color: #fff;
            width: 100%;
        }

        .category-card-body h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .category-card-body p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 16px;
            max-width: 400px;
            line-height: 1.6;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            color: #fff;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }

        .category-card-link:hover {
            background: var(--accent);
            border-color: var(--accent);
        }

        /* ===== 最新资讯卡片 ===== */
        .article-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .article-card-image {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

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

        .article-card:hover .article-card-image img {
            transform: scale(1.08);
        }

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

        .article-card .badge {
            display: inline-flex;
            align-items: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            align-self: flex-start;
            margin-bottom: 10px;
        }

        .article-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
        }

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

        .article-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: #94a3b8;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* ===== 深色统计 ===== */
        .dark-band {
            background: linear-gradient(135deg, #0b1120 0%, #1e3a5f 60%, #1e5eff33 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
            color: #fff;
        }

        .dark-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

        .dark-band .container-custom {
            position: relative;
            z-index: 2;
        }

        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-6px);
        }

        .stat-number {
            font-size: clamp(32px, 4vw, 48px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        /* ===== 流程 ===== */
        .flow-step {
            position: relative;
            text-align: center;
            padding: 32px 20px;
        }

        .flow-step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 8px 24px rgba(30, 94, 255, 0.3);
        }

        .flow-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .flow-step p {
            font-size: 14px;
            color: var(--text-light);
            max-width: 200px;
            margin: 0 auto;
        }

        .flow-arrow {
            position: absolute;
            top: 50%;
            right: -20px;
            transform: translateY(-50%);
            color: var(--border);
            font-size: 20px;
            z-index: 2;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--white);
            border-radius: 16px;
            border: 1px solid var(--border);
            padding: 24px 28px;
            transition: var(--transition);
            height: 100%;
        }

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

        .faq-question {
            font-weight: 700;
            font-size: 16px;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }

        .faq-question .q-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .faq-answer {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
            padding-left: 38px;
        }

        .faq-answer .a-label {
            font-weight: 700;
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== CTA ===== */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, #7b5eff 100%);
            border-radius: 24px;
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }

        .cta-banner .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-banner h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 500px;
        }

        .btn-cta {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.2);
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(255, 255, 255, 0.3);
        }

        .cta-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

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

        .cta-stat .num {
            font-size: 28px;
            font-weight: 800;
        }

        .cta-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0f1e;
            color: #94a3b8;
            padding: 60px 0 0;
        }

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

        .footer-brand .logo-icon {
            background: linear-gradient(135deg, var(--primary), #7b5eff);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 320px;
            color: #64748b;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: #94a3b8;
            transition: color 0.3s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            margin-top: 48px;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero {
                min-height: 580px;
            }
            .hero-content {
                padding-top: 60px;
                padding-bottom: 60px;
            }
            .hero-card {
                max-width: 360px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .container-custom {
                padding: 0 20px;
            }
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
            }
            .header-cta .btn-header {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .hero {
                min-height: auto;
                padding: 60px 0;
            }
            .hero-content {
                padding-top: 40px;
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-card {
                margin-left: 0;
                margin-top: 40px;
                max-width: 100%;
            }
            .hero-btn-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btn-primary,
            .hero-btn-secondary {
                justify-content: center;
            }
            .cta-banner {
                padding: 40px 24px;
                border-radius: 20px;
            }
            .cta-stats {
                gap: 16px;
                margin-top: 24px;
            }
            .flow-arrow {
                display: none;
            }
            .footer-bottom {
                margin-top: 32px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
                border-radius: 10px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero .subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .stat-number {
                font-size: 28px;
            }
            .faq-item {
                padding: 20px;
            }
            .faq-answer {
                padding-left: 0;
                margin-top: 8px;
            }
            .card-feature {
                padding: 24px 18px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
            .cta-banner p {
                font-size: 14px;
            }
            .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #3b82f6;
            --accent: #06b6d4;
            --accent-light: #ecfeff;
            --ink: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-soft: #f8fafc;
            --border: #e2e8f0;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, .08);
            --shadow-lg: 0 24px 56px rgba(0, 0, 0, .14);
            --header-h: 72px;
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-main);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 18px;
            }
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-sm);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            width: 100%;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: .5px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, .35);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 auto;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 2px;
            border-radius: 8px;
            transition: color .25s ease;
        }

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

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

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

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 6px 14px;
            border-radius: 99px;
            background: rgba(16, 185, 129, .1);
            color: #059669;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(16, 185, 129, .2);
        }

        .btn-primary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            transition: all .25s ease;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(37, 99, 235, .32);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(37, 99, 235, .4);
        }

        .btn-ghost {
            background: #fff;
            color: var(--text-main);
            border: 1px solid var(--border);
        }

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            background: #fff;
            transition: all .25s ease;
        }

        .mobile-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            padding: 18px 24px 22px;
            flex-direction: column;
            gap: 6px;
            z-index: 99;
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .mobile-menu.open {
            max-height: 480px;
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 14px 6px;
            font-size: 16px;
            border-bottom: 1px solid #f1f5f9;
        }

        .mobile-menu .nav-link.active::after {
            display: none;
        }

        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .header-actions .btn-ghost,
            .header-actions .status-badge {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .mobile-menu {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .brand {
                font-size: 17px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .header-actions .btn-primary {
                display: none;
            }
        }

        /* ===== Hero 横幅 ===== */
        .hero-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 132px 0 120px;
            color: #fff;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, .9) 0%, rgba(30, 64, 175, .72) 55%, rgba(6, 182, 212, .55) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            backdrop-filter: blur(8px);
            padding: 7px 18px;
            border-radius: 99px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .3px;
            margin-bottom: 24px;
        }

        .hero-content h1 {
            font-size: 46px;
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            color: #7dd3fc;
        }

        .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
            max-width: 620px;
            margin-bottom: 32px;
        }

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

        .btn-light {
            background: #fff;
            color: var(--ink);
            border-radius: 10px;
            font-weight: 600;
            padding: 14px 28px;
            font-size: 15px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 34px rgba(0, 0, 0, .24);
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, .5);
            color: #fff;
            border-radius: 10px;
            font-weight: 500;
            padding: 14px 28px;
            font-size: 15px;
            transition: all .25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .06);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .14);
            border-color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .hero-banner {
                padding: 84px 0 72px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .btn-light,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--primary);
            text-transform: uppercase;
            background: rgba(37, 99, 235, .08);
            padding: 6px 18px;
            border-radius: 99px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--ink);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-head {
                margin-bottom: 38px;
            }
        }

        /* ===== 数据卡 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .stat-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }

        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, .3);
        }

        .stat-number {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
            font-weight: 500;
        }

        .stat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(37, 99, 235, .08);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
        }

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

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

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            counter-reset: step;
        }

        .step-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 34px 26px 30px;
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(6, 182, 212, .35);
        }

        .step-num {
            position: absolute;
            top: 18px;
            right: 20px;
            font-size: 44px;
            font-weight: 800;
            color: rgba(37, 99, 235, .1);
            line-height: 1;
        }

        .step-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 8px 18px rgba(37, 99, 235, .25);
            margin-bottom: 20px;
        }

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

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

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

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

        /* ===== 功能卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, .3);
        }

        .feature-img-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .feature-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

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

        .feature-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(15, 23, 42, .55));
        }

        .feature-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 99px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, .12);
        }

        .feature-body {
            padding: 26px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

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

        .feature-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            flex: 1;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .25s ease;
        }

        .feature-link:hover {
            gap: 14px;
        }

        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-img-wrap {
                height: 190px;
            }
        }

        /* ===== 技巧板块 ===== */
        .tips-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .tips-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

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

        .tips-media .tips-caption {
            position: absolute;
            left: 20px;
            bottom: 20px;
            right: 20px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-radius: 14px;
            padding: 16px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
            box-shadow: var(--shadow-md);
        }

        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .tip-item {
            display: flex;
            gap: 16px;
            padding: 22px 24px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: all .3s ease;
        }

        .tip-item:hover {
            border-color: rgba(6, 182, 212, .4);
            box-shadow: var(--shadow-md);
            transform: translateX(6px);
        }

        .tip-item-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(6, 182, 212, .1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .tip-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 4px;
        }

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

        @media (max-width: 768px) {
            .tips-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .tips-media img {
                height: 260px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 0;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, .3);
            box-shadow: var(--shadow-sm);
        }

        .faq-item[open] {
            border-color: rgba(37, 99, 235, .4);
            box-shadow: var(--shadow-md);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            user-select: none;
            transition: color .25s ease;
        }

        .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: 13px;
            color: var(--text-muted);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

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

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

        .faq-answer {
            padding: 0 26px 24px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-band {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 60%, #0e7490 100%);
            border-radius: 28px;
            padding: 64px 56px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(6, 182, 212, .35), transparent 45%);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, .85);
            max-width: 460px;
        }

        .cta-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-band {
                padding: 44px 26px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .cta-inner {
                flex-direction: column;
                text-align: center;
            }
            .cta-btns {
                justify-content: center;
                width: 100%;
            }
            .cta-btns .btn-light,
            .cta-btns .btn-outline-light {
                flex: 1;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 72px 0 34px;
            margin-top: 30px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }

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

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

        .footer-bottom {
            margin-top: 52px;
            padding-top: 24px;
            border-top: 1px solid rgba(148, 163, 184, .15);
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ===== 焦点状态 ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(37, 99, 235, .5);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* ===== 减少动画偏好 ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                transition-duration: .01ms !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --accent: #06b6d4;
            --accent-light: #cffafe;
            --secondary: #f59e0b;
            --dark: #0f172a;
            --darker: #020617;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(2, 6, 23, 0.06);
            --shadow: 0 8px 30px rgba(2, 6, 23, 0.08);
            --shadow-lg: 0 16px 48px rgba(2, 6, 23, 0.14);
        }

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

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

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        button, input, select, textarea {
            font: inherit;
            color: inherit;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--dark);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 999px;
            padding: 12px 28px;
            border: 2px solid transparent;
            cursor: pointer;
            transition: all 0.3s ease;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.28);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.38);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--dark);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
        }

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

        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }

        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--border-light);
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 500;
            transition: all 0.25s ease;
            cursor: default;
        }

        .tag-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 10px rgba(2, 6, 23, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.02em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-link i {
            font-size: 13px;
            opacity: 0.75;
        }

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

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
        }

        .nav-link.active i {
            opacity: 1;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: var(--bg-white);
            color: var(--text-main);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .menu-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .article-breadcrumb {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .breadcrumb-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-muted);
            transition: color 0.2s;
        }

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

        .breadcrumb-sep {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb-current {
            color: var(--text-main);
            font-weight: 600;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
        }

        .article-hero {
            position: relative;
            padding: 72px 0 80px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
            text-align: center;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(2, 6, 23, 0.9) 0%, rgba(37, 99, 235, 0.82) 60%, rgba(6, 182, 212, 0.6) 100%);
            z-index: 1;
        }

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

        .article-hero-inner {
            max-width: 860px;
            margin: 0 auto;
            padding-top: 20px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 24px;
        }

        .article-hero h1 {
            font-size: clamp(26px, 4vw, 44px);
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 20px;
            text-shadow: 0 2px 24px rgba(0, 0, 0, 0.2);
        }

        .article-hero-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 20px;
        }

        .article-hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-hero-desc {
            max-width: 700px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
        }

        .article-main {
            background: var(--bg-light);
            padding: 64px 0;
        }

        .article-content-card {
            max-width: 860px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 56px;
            border: 1px solid var(--border-light);
        }

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

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin: 40px 0 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin: 32px 0 14px;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            margin: 24px 0 12px;
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body ul {
            list-style: disc;
            padding-left: 24px;
            margin-bottom: 24px;
        }

        .article-body ol {
            list-style: decimal;
            padding-left: 24px;
            margin-bottom: 24px;
        }

        .article-body li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-light);
            padding: 18px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 28px 0;
            color: var(--text-muted);
            font-style: normal;
        }

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

        .article-body img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            margin: 28px auto;
        }

        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
            word-break: break-all;
        }

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

        .article-body code {
            background: var(--border-light);
            padding: 3px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: var(--primary-dark);
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
        }

        .article-body pre {
            background: var(--darker);
            color: #e2e8f0;
            padding: 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 28px 0;
            font-size: 14px;
            line-height: 1.7;
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
            overflow: hidden;
            border-radius: var(--radius);
        }

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

        .article-body th {
            background: var(--bg-light);
            font-weight: 600;
            color: var(--dark);
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 14px;
        }

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

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }

        .share-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
        }

        .share-btn {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text-muted);
            font-size: 15px;
            transition: all 0.25s ease;
        }

        .share-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .share-wechat:hover {
            background: #07c160;
            color: #fff;
        }

        .share-weibo:hover {
            background: #e6162d;
            color: #fff;
        }

        .share-qq:hover {
            background: #12b7f5;
            color: #fff;
        }

        .article-not-found {
            text-align: center;
            padding: 40px 20px;
        }

        .not-found-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 28px;
            margin-bottom: 20px;
        }

        .article-not-found h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .related-section {
            background: var(--bg-white);
            padding: 80px 0;
        }

        .section-heading {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-heading h2 {
            font-size: clamp(24px, 3vw, 34px);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-heading p {
            color: var(--text-muted);
            font-size: 15px;
        }

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

        .news-card {
            display: block;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.35s ease;
        }

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

        .news-thumb {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--bg-light);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .thumb-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .news-card-body {
            padding: 24px;
        }

        .news-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .news-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .read-more {
            color: var(--primary);
            font-weight: 600;
            transition: gap 0.2s ease;
        }

        .related-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 32px;
            color: var(--text-muted);
            background: var(--bg-light);
            border-radius: var(--radius);
            font-size: 15px;
        }

        .faq-section {
            background: var(--bg-light);
            padding: 80px 0;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 0;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .faq-item[open] {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            list-style: none;
            gap: 16px;
            user-select: none;
        }

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

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

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

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-answer p {
            margin-bottom: 8px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--darker) 0%, #1e3a8a 60%, var(--primary) 100%);
            padding: 72px 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.12);
            filter: blur(60px);
        }

        .cta-card {
            position: relative;
            z-index: 2;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-card h2 {
            color: #fff;
            font-size: clamp(24px, 3vw, 36px);
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

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

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

        .site-footer {
            background: var(--darker);
            color: #cbd5e1;
            padding: 64px 0 28px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            font-size: 15px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #94a3b8;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 14px;
            padding: 5px 0;
            display: inline-flex;
            align-items: center;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            color: #64748b;
            font-size: 14px;
        }

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

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

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 20px;
                gap: 8px;
                box-shadow: 0 16px 40px rgba(2, 6, 23, 0.12);
                border-bottom: 1px solid var(--border-light);
                display: none;
                z-index: 99;
            }

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

            .nav-link {
                padding: 12px 18px;
                border-radius: 12px;
                justify-content: flex-start;
            }

            .header-actions {
                gap: 8px;
            }

            .header-cta {
                display: none;
            }

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

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

            .article-hero {
                padding: 48px 0 56px;
            }

            .article-content-card {
                padding: 32px 24px;
                border-radius: var(--radius);
            }

            .article-main {
                padding: 40px 0;
            }

            .faq-section {
                padding: 56px 0;
            }

            .related-section {
                padding: 56px 0;
            }

            .cta-section {
                padding: 56px 0;
            }

            .footer-bottom {
                margin-top: 32px;
            }
        }

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

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

            .article-hero h1 {
                font-size: 24px;
            }

            .article-hero-desc {
                font-size: 14px;
            }

            .article-body {
                font-size: 15px;
                line-height: 1.85;
            }

            .article-content-card {
                padding: 24px 18px;
            }

            .article-share {
                flex-wrap: wrap;
            }

            .breadcrumb-current {
                max-width: 180px;
            }

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

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