/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0B1B3A;
            --primary-light: #0E2A5A;
            --primary-dark: #081026;
            --accent: #22D3EE;
            --accent-blue: #3B82F6;
            --secondary: #7C6FF0;
            --text-main: #E2E8F0;
            --text-sub: #94A3B8;
            --text-title: #F8FAFC;
            --text-link: #7DD3FC;
            --border-glass: rgba(255, 255, 255, 0.12);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --bg-glass-hover: rgba(255, 255, 255, 0.1);
            --radius-lg: 24px;
            --radius-md: 16px;
            --shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 30px 60px rgba(34, 211, 238, 0.15);
            --glow: 0 0 24px rgba(34, 211, 238, 0.4);
            --glow-strong: 0 0 40px rgba(34, 211, 238, 0.6);
            --transition: all 0.3s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
            --nav-height: 72px;
            --section-padding: 100px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: radial-gradient(ellipse at top, var(--primary) 0%, var(--primary-dark) 100%);
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background-image:
                radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.08) 50%, transparent 50%),
                radial-gradient(1px 1px at 80px 120px, rgba(255, 255, 255, 0.06) 50%, transparent 50%),
                radial-gradient(1px 1px at 200px 60px, rgba(255, 255, 255, 0.07) 50%, transparent 50%),
                radial-gradient(1.5px 1.5px at 320px 180px, rgba(124, 111, 240, 0.12) 50%, transparent 50%);
            background-size: 400px 400px;
            pointer-events: none;
            z-index: 0;
        }
        a {
            color: var(--text-link);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            color: var(--text-title);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== 通用按钮 ===== */
        .btn {
            border-radius: 12px;
            font-weight: 600;
            padding: 12px 28px;
            transition: var(--transition);
            border: none;
            font-size: 15px;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
            border-radius: 14px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-primary.btn-glow {
            background: linear-gradient(135deg, #22D3EE, #3B82F6);
            color: var(--primary-dark);
            box-shadow: var(--glow);
            border-radius: 14px;
        }
        .btn-primary.btn-glow:hover,
        .btn-primary.btn-glow:focus {
            box-shadow: var(--glow-strong);
            transform: translateY(-2px);
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            color: #fff;
        }
        .btn-primary.btn-glow:active {
            transform: scale(0.97);
        }
        .btn-glass {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(10px);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
            height: var(--nav-height);
        }
        .site-header.scrolled {
            background: rgba(11, 27, 58, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .site-header .navbar {
            padding: 0;
            height: var(--nav-height);
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-title);
            letter-spacing: 0.02em;
        }
        .navbar-brand:hover {
            color: var(--accent);
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 16px;
            box-shadow: var(--glow);
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 8px;
        }
        .navbar-nav .nav-link {
            color: rgba(226, 232, 240, 0.85);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 18px;
            border-radius: 10px;
            position: relative;
            transition: color 0.3s, background 0.3s;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }
        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent-blue));
            transition: transform 0.3s ease;
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                background: rgba(11, 27, 58, 0.95);
                backdrop-filter: blur(20px);
                border: 1px solid var(--border-glass);
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
                font-size: 16px;
            }
            .navbar-nav .nav-link::after {
                display: none;
            }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(11, 27, 58, 0.82), rgba(8, 16, 38, 0.92)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
            text-align: center;
            padding: 120px 0 80px;
        }
        .hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 200px;
            background: linear-gradient(to top, var(--primary-dark), transparent);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            font-size: 14px;
            color: var(--text-main);
            letter-spacing: 0.05em;
            backdrop-filter: blur(10px);
            margin-bottom: 24px;
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #ffffff 0%, #A5D8FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }
        .hero-sub {
            font-size: 20px;
            color: rgba(226, 232, 240, 0.85);
            line-height: 1.7;
            max-width: 680px;
            margin: 0 auto 40px;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: center;
            padding: 20px 28px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            min-width: 130px;
        }
        .stat-num {
            display: block;
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            text-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 4px;
            display: block;
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: var(--section-padding) 0;
            position: relative;
            z-index: 1;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 60px;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 30px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 36px;
            margin-bottom: 16px;
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 17px;
        }
        @media (max-width: 991.98px) {
            .section {
                --section-padding: 70px;
            }
            .section-head h2 {
                font-size: 28px;
            }
        }

        /* ===== 品牌故事区 ===== */
        .about {
            background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 100%);
        }
        .about-img-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .about-img-wrap img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            display: block;
            border-radius: var(--radius-lg);
        }
        .about-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 27, 58, 0.3), transparent);
        }
        .about-tag {
            margin-bottom: 14px;
        }
        .about h2 {
            font-size: 32px;
            margin-bottom: 24px;
        }
        .about-text p {
            color: var(--text-sub);
            margin-bottom: 18px;
            font-size: 16px;
            line-height: 1.9;
        }
        .about-points {
            list-style: none;
            padding: 0;
            margin: 24px 0 32px;
        }
        .about-points li {
            padding: 8px 0;
            color: var(--text-main);
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .about-points li i {
            color: var(--accent);
            font-size: 18px;
            width: 24px;
            text-align: center;
        }

        /* ===== 核心服务区 ===== */
        .services {
            background: var(--primary-dark);
        }
        .service-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 36px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
        }
        .service-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: var(--shadow-hover);
            background: rgba(255, 255, 255, 0.08);
        }
        .service-card-lg {
            padding: 0;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            min-height: 420px;
        }
        .service-card-lg img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: 0;
        }
        .service-card-body {
            padding: 30px 36px 36px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .service-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            color: var(--primary-dark);
            margin-bottom: 20px;
            box-shadow: var(--glow);
        }
        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .service-card p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }
        .service-card-row {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .service-card-row .service-icon {
            margin-bottom: 0;
            flex-shrink: 0;
        }
        .service-card-row .service-text h3 {
            margin-bottom: 6px;
        }

        /* ===== 最新信息列表 ===== */
        .latest {
            background: var(--primary);
        }
        .latest-list {
            max-width: 960px;
            margin: 0 auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.03);
            overflow: hidden;
        }
        .latest-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 24px 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s;
        }
        .latest-item:last-child {
            border-bottom: none;
        }
        .latest-item:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        .latest-date {
            flex-shrink: 0;
            width: 100px;
            font-size: 14px;
            color: var(--text-sub);
            font-family: "SF Mono", "Cascadia Code", monospace;
        }
        .latest-content {
            flex: 1;
            min-width: 0;
        }
        .latest-content h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }
        .latest-content h3 a {
            color: var(--text-title);
        }
        .latest-content h3 a:hover {
            color: var(--accent);
        }
        .latest-content p {
            color: var(--text-sub);
            font-size: 14px;
            margin: 0;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 480px;
        }
        .latest-category {
            flex-shrink: 0;
        }
        .latest-category .badge {
            background: rgba(124, 111, 240, 0.15);
            color: var(--secondary);
            border: 1px solid rgba(124, 111, 240, 0.3);
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 30px;
            font-size: 13px;
        }
        .latest-link {
            flex-shrink: 0;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-link);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.3s;
        }
        .latest-link:hover {
            color: var(--accent);
            gap: 10px;
        }
        .latest-empty {
            padding: 60px 20px;
            text-align: center;
            color: var(--text-sub);
        }
        .latest-empty i {
            font-size: 40px;
            color: rgba(255, 255, 255, 0.15);
            margin-bottom: 16px;
            display: block;
        }
        .latest-empty p {
            margin: 0;
        }
        .section-cta {
            text-align: center;
            margin-top: 40px;
        }
        @media (max-width: 767.98px) {
            .latest-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .latest-date {
                width: auto;
                font-size: 13px;
                flex-basis: 100%;
            }
            .latest-category {
                display: none;
            }
            .latest-content p {
                white-space: normal;
            }
        }

        /* ===== 精选内容卡区 ===== */
        .featured {
            background: var(--primary-dark);
        }
        .feature-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(34, 211, 238, 0.35);
        }
        .feature-card-img {
            position: relative;
            overflow: hidden;
        }
        .feature-card-img img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
            border-radius: 0;
        }
        .feature-card:hover .feature-card-img img {
            transform: scale(1.04);
        }
        .feature-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 16, 38, 0.6), transparent);
        }
        .feature-card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 4px 14px;
            border-radius: 30px;
            background: rgba(11, 27, 58, 0.7);
            backdrop-filter: blur(8px);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }
        .feature-card-body {
            padding: 26px;
        }
        .feature-card-body h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .feature-card-body h3 a {
            color: var(--text-title);
        }
        .feature-card-body h3 a:hover {
            color: var(--accent);
        }
        .feature-card-body p {
            color: var(--text-sub);
            font-size: 14px;
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .feature-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-sub);
        }
        .feature-card-meta .card-link {
            color: var(--text-link);
            font-weight: 600;
            transition: gap 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .feature-card-meta .card-link:hover {
            gap: 8px;
            color: var(--accent);
        }

        /* ===== 信任区 ===== */
        .trust {
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
        }
        .trust::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .trust .container {
            position: relative;
            z-index: 1;
        }
        .trust-stats {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin: 50px 0 60px;
        }
        .trust-stat {
            text-align: center;
            padding: 36px 40px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(8px);
            min-width: 200px;
            transition: var(--transition);
        }
        .trust-stat:hover {
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-4px);
        }
        .trust-stat .num {
            font-size: 44px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            display: block;
        }
        .trust-stat p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 8px 0 0;
        }
        .trust-logos {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .trust-logo {
            padding: 14px 28px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: rgba(148, 163, 184, 0.6);
            font-size: 15px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .trust-logo i {
            font-size: 14px;
        }
        .trust-logo:hover {
            color: var(--text-main);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .trust-quote {
            max-width: 680px;
            margin: 50px auto 0;
            text-align: center;
            padding: 32px 40px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .trust-quote p {
            font-size: 18px;
            color: var(--text-main);
            font-style: italic;
            margin: 0;
            line-height: 1.8;
        }
        .trust-quote .cite {
            display: block;
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-sub);
            font-style: normal;
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--primary);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(34, 211, 238, 0.25);
        }
        .accordion-button {
            background: transparent;
            color: var(--text-title);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border-radius: var(--radius-md);
            transition: background 0.3s;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(34, 211, 238, 0.06);
            color: var(--accent);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }
        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2322D3EE'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.3s;
        }
        .accordion-body {
            background: transparent;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 24px 24px;
        }
        .accordion-body strong {
            color: var(--text-main);
        }

        /* ===== CTA / 订阅区 ===== */
        .contact {
            background: var(--primary-dark);
        }
        .contact-box {
            max-width: 780px;
            margin: 0 auto;
            text-align: center;
            padding: 70px 60px;
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
            border: 1px solid var(--border-glass);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }
        .contact-box::before {
            content: "";
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(34, 211, 238, 0.12), transparent);
            border-radius: 50%;
        }
        .contact-box h2 {
            font-size: 32px;
            margin-bottom: 12px;
        }
        .contact-box p {
            color: var(--text-sub);
            font-size: 16px;
            margin-bottom: 32px;
        }
        .subscribe-form {
            display: flex;
            gap: 0;
            max-width: 520px;
            margin: 0 auto;
            border-radius: 50px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: box-shadow 0.3s, border-color 0.3s;
        }
        .subscribe-form:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
        }
        .subscribe-form input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 14px 24px;
            font-size: 15px;
            color: var(--text-main);
            outline: none;
            min-width: 0;
            height: 52px;
        }
        .subscribe-form input::placeholder {
            color: rgba(148, 163, 184, 0.7);
        }
        .subscribe-form button {
            background: linear-gradient(135deg, var(--accent), var(--accent-blue));
            border: none;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 15px;
            padding: 0 32px;
            cursor: pointer;
            transition: filter 0.3s, box-shadow 0.3s;
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            filter: brightness(1.1);
            box-shadow: var(--glow);
        }
        .contact-links {
            margin-top: 24px;
            display: flex;
            justify-content: center;
            gap: 24px;
            font-size: 14px;
            color: var(--text-sub);
            flex-wrap: wrap;
        }
        .contact-links a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        @media (max-width: 767.98px) {
            .contact-box {
                padding: 50px 24px;
            }
            .subscribe-form {
                flex-direction: column;
                border-radius: 16px;
            }
            .subscribe-form button {
                height: 48px;
                width: 100%;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 70px 0 0;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-title);
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            font-size: 14px;
        }
        .footer-desc {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-sub);
            font-size: 15px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            color: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.25);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--text-title);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }
        .footer-col ul a {
            color: var(--text-sub);
            transition: color 0.3s;
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-sub);
        }
        .footer-contact li i {
            color: var(--accent);
            width: 16px;
            font-size: 13px;
        }
        .footer-bottom {
            margin-top: 50px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(148, 163, 184, 0.6);
        }
        .footer-bottom p {
            margin: 0;
        }
        @media (max-width: 991.98px) {
            .footer-col {
                margin-bottom: 30px;
            }
        }

        /* ===== Scroll top ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            color: var(--text-main);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s ease;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            color: var(--accent);
            border-color: var(--accent);
            box-shadow: var(--glow);
        }

        /* ===== 响应式覆盖 ===== */
        @media (max-width: 1199.98px) {
            .hero h1 {
                font-size: 42px;
            }
        }
        @media (max-width: 991.98px) {
            .hero h1 {
                font-size: 34px;
            }
            .hero-sub {
                font-size: 17px;
            }
            .about-img-wrap img {
                height: 320px;
            }
        }
        @media (max-width: 767.98px) {
            .hero {
                padding-top: 110px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-stats {
                gap: 16px;
            }
            .stat-item {
                min-width: 100px;
                padding: 16px 18px;
            }
            .stat-num {
                font-size: 24px;
            }
            .service-card-row {
                flex-direction: column;
                text-align: center;
            }
            .service-card-row .service-icon {
                margin-bottom: 12px;
            }
            .trust-stat {
                min-width: 140px;
                padding: 24px 20px;
            }
            .trust-stat .num {
                font-size: 32px;
            }
            .contact-box {
                padding: 40px 20px;
            }
        }
        @media (max-width: 575.98px) {
            .btn-lg {
                padding: 12px 24px;
                width: 100%;
                max-width: 320px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-sub {
                font-size: 16px;
            }
            .section-head h2 {
                font-size: 24px;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #0B1B3A;
        --primary-light: #0E2A5A;
        --primary-dark: #081026;
        --accent: #22D3EE;
        --accent-blue: #3B82F6;
        --secondary: #7C6FF0;
        --text-main: #E2E8F0;
        --text-sub: #94A3B8;
        --text-dim: #64748B;
        --title-color: #F8FAFC;
        --border-glass: rgba(255, 255, 255, 0.12);
        --bg-glass: rgba(255, 255, 255, 0.06);
        --bg-card: #132747;
        --radius-lg: 24px;
        --radius-md: 16px;
        --radius-sm: 12px;
        --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.25);
        --shadow-hover: 0 30px 60px rgba(34, 211, 238, 0.15);
        --glow-primary: 0 0 24px rgba(34, 211, 238, 0.4);
        --glow-primary-hover: 0 0 40px rgba(34, 211, 238, 0.65);
        --transition-base: all 0.3s ease;
        --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-family);
        background: radial-gradient(ellipse at 20% 0%, var(--primary-light) 0%, var(--primary) 40%, var(--primary-dark) 100%);
        background-attachment: fixed;
        color: var(--text-main);
        line-height: 1.8;
        font-size: 16px;
        overflow-x: hidden;
    }

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

    a {
        color: #7DD3FC;
        text-decoration: none;
        transition: var(--transition-base);
    }

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

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

    :focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
        box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
        border-radius: 4px;
    }

    .container {
        max-width: 1200px;
        padding-left: 20px;
        padding-right: 20px;
    }

    section {
        padding: 90px 0;
        position: relative;
    }

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

    .section-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(124, 111, 240, 0.15);
        border: 1px solid rgba(124, 111, 240, 0.3);
        color: #B9B2F5;
        font-size: 13px;
        font-weight: 600;
        padding: 6px 18px;
        border-radius: 50px;
        letter-spacing: 0.02em;
        margin-bottom: 16px;
    }

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

    .section-title {
        color: var(--title-color);
        font-size: 34px;
        font-weight: 700;
        letter-spacing: -0.01em;
        line-height: 1.3;
        margin-bottom: 14px;
    }

    @media (max-width: 992px) {
        .section-title {
            font-size: 28px;
        }
    }

    .section-subtitle {
        color: var(--text-sub);
        font-size: 16px;
        line-height: 1.8;
        max-width: 720px;
        margin-left: auto;
        margin-right: auto;
    }

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

    /* 顶部导航 */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: transparent;
        transition: var(--transition-base);
        padding: 0;
    }

    .site-header.scrolled {
        background: rgba(11, 27, 58, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border-glass);
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    }

    .site-header .navbar {
        padding: 0;
        min-height: 72px;
        flex-wrap: nowrap;
    }

    .site-header .navbar-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--title-color);
        letter-spacing: 0.01em;
        padding: 0;
        margin: 0;
    }

    .site-header .navbar-brand:hover {
        color: var(--title-color);
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--accent), var(--accent-blue));
        border-radius: 10px;
        color: var(--primary-dark);
        font-size: 15px;
        box-shadow: 0 0 16px rgba(34, 211, 238, 0.35);
    }

    .navbar-collapse {
        justify-content: flex-end;
    }

    .navbar-nav {
        align-items: center;
        gap: 4px;
    }

    .nav-item {
        position: relative;
    }

    .nav-link {
        color: var(--text-sub) !important;
        font-size: 15px;
        font-weight: 500;
        padding: 10px 18px !important;
        border-radius: 8px;
        transition: var(--transition-base);
        position: relative;
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 18px;
        right: 18px;
        height: 2px;
        background: linear-gradient(90deg, var(--accent), var(--accent-blue));
        border-radius: 2px;
        transform: scaleX(0);
        transform-origin: left center;
        transition: transform 0.3s ease;
    }

    .nav-link:hover {
        color: var(--title-color) !important;
        text-shadow: 0 0 12px rgba(34, 211, 238, 0.4);
    }

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

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

    .navbar-toggler {
        border: 1px solid rgba(255, 255, 255, 0.2);
        background: rgba(255, 255, 255, 0.05);
        border-radius: 8px;
        padding: 6px 10px;
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
    }

    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
    }

    @media (max-width: 991px) {
        .site-header .navbar {
            min-height: 64px;
        }

        .navbar-collapse {
            background: rgba(11, 27, 58, 0.96);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 20px;
            margin-top: 12px;
            box-shadow: var(--shadow-lg);
        }

        .navbar-nav {
            align-items: flex-start;
            gap: 4px;
            width: 100%;
            margin-bottom: 12px;
        }

        .nav-link {
            padding: 12px 16px !important;
            width: 100%;
            font-size: 16px;
        }

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

        .nav-link:hover {
            background: rgba(34, 211, 238, 0.08);
        }

        .navbar-collapse .btn {
            width: 100%;
            margin-left: 0 !important;
        }
    }

    /* 按钮 */
    .btn {
        border-radius: 10px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        transition: var(--transition-base);
        border: none;
        line-height: 1.6;
    }

    .btn-glow {
        background: linear-gradient(135deg, #22D3EE, #3B82F6);
        color: #0B1B3A;
        box-shadow: var(--glow-primary);
    }

    .btn-glow:hover {
        color: #0B1B3A;
        box-shadow: var(--glow-primary-hover);
        transform: translateY(-2px);
    }

    .btn-glow:active {
        transform: scale(0.97);
    }

    .btn-ghost {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: var(--text-main);
        backdrop-filter: blur(10px);
    }

    .btn-ghost:hover {
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.5);
        color: #fff;
        transform: translateY(-2px);
    }

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

    .btn-lg {
        padding: 14px 36px;
        font-size: 16px;
    }

    .btn:focus {
        box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
    }

    .btn-link-custom {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: #7DD3FC;
        font-weight: 600;
        font-size: 15px;
        background: none;
        border: none;
        padding: 0;
        position: relative;
        transition: var(--transition-base);
    }

    .btn-link-custom::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 1px;
        background: var(--accent);
        transform: scaleX(0.3);
        transform-origin: left center;
        transition: transform 0.3s ease;
    }

    .btn-link-custom:hover {
        color: var(--accent);
    }

    .btn-link-custom:hover::after {
        transform: scaleX(1);
    }

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

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

    /* Hero */
    .hero-section {
        min-height: 100vh;
        display: flex;
        align-items: center;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        background-attachment: scroll;
        position: relative;
        padding: 140px 0 100px;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11, 27, 58, 0.6) 0%, rgba(11, 27, 58, 0.8) 50%, rgba(8, 16, 38, 0.95) 100%);
    }

    .hero-section::after {
        content: '';
        position: absolute;
        inset: 0;
        background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Ccircle cx='2' cy='2' r='1' fill='rgba(255,255,255,0.15)'/%3E%3Ccircle cx='20' cy='8' r='0.6' fill='rgba(255,255,255,0.1)'/%3E%3Ccircle cx='35' cy='20' r='1.2' fill='rgba(255,255,255,0.08)'/%3E%3Ccircle cx='8' cy='30' r='0.6' fill='rgba(255,255,255,0.12)'/%3E%3Ccircle cx='30' cy='35' r='0.8' fill='rgba(255,255,255,0.1)'/%3E%3C/svg%3E") repeat;
    }

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

    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(12px);
        border-radius: 50px;
        padding: 8px 22px;
        font-size: 14px;
        font-weight: 500;
        color: var(--text-main);
        margin-bottom: 28px;
    }

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

    .hero-title {
        font-size: 48px;
        font-weight: 800;
        color: var(--title-color);
        letter-spacing: -0.01em;
        line-height: 1.25;
        margin-bottom: 24px;
        text-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
    }

    .hero-title .gradient-text {
        background: linear-gradient(135deg, #22D3EE, #7C6FF0);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        display: inline-block;
    }

    .hero-subtitle {
        font-size: 18px;
        color: var(--text-sub);
        max-width: 640px;
        margin: 0 auto 40px;
        line-height: 1.8;
    }

    .hero-actions {
        display: flex;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
        margin-bottom: 60px;
    }

    .hero-metrics {
        display: flex;
        justify-content: center;
        gap: 48px;
        flex-wrap: wrap;
    }

    .hero-metric-item {
        text-align: center;
        padding: 16px 24px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-md);
        backdrop-filter: blur(8px);
        min-width: 140px;
    }

    .hero-metric-num {
        font-size: 32px;
        font-weight: 700;
        color: var(--title-color);
        line-height: 1.3;
        display: block;
    }

    .hero-metric-label {
        font-size: 13px;
        color: var(--text-sub);
    }

    @media (max-width: 992px) {
        .hero-title {
            font-size: 36px;
        }
        .hero-metrics {
            gap: 16px;
        }
        .hero-metric-item {
            min-width: 120px;
            padding: 12px 16px;
        }
        .hero-metric-num {
            font-size: 26px;
        }
    }

    @media (max-width: 576px) {
        .hero-section {
            padding: 120px 0 80px;
        }
        .hero-title {
            font-size: 30px;
        }
        .hero-subtitle {
            font-size: 16px;
        }
        .hero-actions {
            flex-direction: column;
            align-items: center;
        }
        .hero-actions .btn {
            width: 100%;
            max-width: 280px;
        }
        .hero-metrics {
            gap: 12px;
        }
        .hero-metric-item {
            min-width: calc(50% - 12px);
            padding: 12px;
        }
        .hero-metric-num {
            font-size: 24px;
        }
    }

    /* 平台优势综合 */
    .advantages-section {
        background: var(--primary-dark);
        position: relative;
        z-index: 1;
    }

    .advantages-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.3), transparent);
    }

    .advantage-card {
        background: var(--bg-glass);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: 36px 28px;
        height: 100%;
        backdrop-filter: blur(10px);
        transition: var(--transition-base);
        position: relative;
        overflow: hidden;
    }

    .advantage-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: linear-gradient(90deg, var(--accent), var(--accent-blue));
        transform: scaleX(0);
        transform-origin: left;
        transition: transform 0.4s ease;
    }

    .advantage-card:hover {
        transform: translateY(-6px);
        border-color: rgba(34, 211, 238, 0.3);
        box-shadow: var(--shadow-hover);
        background: rgba(255, 255, 255, 0.08);
    }

    .advantage-card:hover::before {
        transform: scaleX(1);
    }

    .advantage-icon {
        width: 64px;
        height: 64px;
        border-radius: var(--radius-md);
        background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(59, 130, 246, 0.2));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        color: var(--accent);
        margin-bottom: 22px;
        border: 1px solid rgba(34, 211, 238, 0.2);
        transition: var(--transition-base);
    }

    .advantage-card:hover .advantage-icon {
        box-shadow: 0 0 30px rgba(34, 211, 238, 0.3);
        transform: scale(1.05);
    }

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

    .advantage-card p {
        font-size: 15px;
        color: var(--text-sub);
        margin-bottom: 0;
        line-height: 1.8;
    }

    /* 核心服务 */
    .services-section {
        background: var(--primary);
        position: relative;
    }

    .services-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(11, 27, 58, 0.85);
        z-index: 0;
    }

    .services-section .container {
        position: relative;
        z-index: 1;
    }

    .service-item {
        background: var(--bg-card);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: var(--transition-base);
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .service-item:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(34, 211, 238, 0.25);
    }

    .service-thumb {
        position: relative;
        height: 200px;
        overflow: hidden;
        background: var(--primary-light);
    }

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

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

    .service-thumb::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 40%, rgba(8, 16, 38, 0.3) 100%);
    }

    .service-tag {
        position: absolute;
        top: 16px;
        left: 16px;
        z-index: 2;
        background: rgba(11, 27, 58, 0.8);
        border: 1px solid rgba(34, 211, 238, 0.3);
        color: var(--accent);
        font-size: 12px;
        font-weight: 600;
        padding: 4px 14px;
        border-radius: 50px;
        backdrop-filter: blur(6px);
    }

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

    .service-body h3 {
        font-size: 19px;
        font-weight: 700;
        color: var(--title-color);
        margin-bottom: 10px;
    }

    .service-body p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
        flex: 1;
        margin-bottom: 16px;
    }

    .service-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 14px;
    }

    .service-meta span {
        font-size: 13px;
        color: var(--text-dim);
    }

    .service-meta i {
        color: var(--accent);
        font-size: 14px;
        transition: transform 0.3s ease;
    }

    .service-item:hover .service-meta i {
        transform: translateX(4px);
    }

    /* 场景 */
    .scenario-section {
        background: var(--primary-dark);
    }

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

    .scenario-card {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius-lg);
        padding: 32px;
        transition: var(--transition-base);
        position: relative;
        overflow: hidden;
    }

    .scenario-card::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background: linear-gradient(180deg, var(--accent), var(--secondary));
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .scenario-card:hover {
        background: rgba(255, 255, 255, 0.06);
        border-color: rgba(34, 211, 238, 0.2);
    }

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

    .scenario-card .scenario-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(124, 111, 240, 0.15);
        border: 1px solid rgba(124, 111, 240, 0.25);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: #A5A0F8;
        margin-bottom: 18px;
    }

    .scenario-card h3 {
        font-size: 18px;
        font-weight: 700;
        color: var(--title-color);
        margin-bottom: 10px;
    }

    .scenario-card p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 0;
    }

    @media (max-width: 768px) {
        .scenario-row {
            grid-template-columns: 1fr;
        }
    }

    /* 服务流程 */
    .process-section {
        background: var(--primary);
    }

    .process-step {
        text-align: center;
        position: relative;
        padding: 30px 20px;
    }

    .process-step::after {
        content: '';
        position: absolute;
        top: 45px;
        right: -30%;
        width: 60%;
        height: 2px;
        background: linear-gradient(90deg, rgba(34, 211, 238, 0.4), rgba(34, 211, 238, 0.05));
        z-index: 0;
    }

    .process-step:last-child::after {
        display: none;
    }

    .step-circle {
        width: 72px;
        height: 72px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: rgba(34, 211, 238, 0.08);
        border: 2px solid var(--accent);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        font-weight: 700;
        color: var(--accent);
        box-shadow: 0 0 30px rgba(34, 211, 238, 0.2);
        position: relative;
        z-index: 1;
    }

    .step-circle::after {
        content: '';
        position: absolute;
        inset: -6px;
        border-radius: 50%;
        border: 1px solid rgba(34, 211, 238, 0.15);
        animation: pulseRing 2.5s ease-out infinite;
    }

    @keyframes pulseRing {
        0% {
            transform: scale(1);
            opacity: 1;
        }
        100% {
            transform: scale(1.3);
            opacity: 0;
        }
    }

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

    .process-step p {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.6;
        margin-bottom: 0;
        max-width: 180px;
        margin-left: auto;
        margin-right: auto;
    }

    @media (max-width: 992px) {
        .process-step::after {
            display: none;
        }
    }

    /* 数据统计 */
    .stats-section {
        background: linear-gradient(135deg, #0E2A5A, #0B1B3A);
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
        text-align: center;
    }

    .stat-number {
        font-size: 44px;
        font-weight: 800;
        line-height: 1.2;
        background: linear-gradient(135deg, var(--accent), var(--accent-blue));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        display: block;
        margin-bottom: 8px;
    }

    .stat-label {
        font-size: 14px;
        color: var(--text-sub);
        letter-spacing: 0.05em;
    }

    @media (max-width: 768px) {
        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 30px 20px;
        }
        .stat-number {
            font-size: 34px;
        }
    }

    /* FAQ */
    .faq-section {
        background: var(--primary-dark);
    }

    .faq-item {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-md);
        margin-bottom: 16px;
        overflow: hidden;
        transition: var(--transition-base);
    }

    .faq-item:hover {
        border-color: rgba(34, 211, 238, 0.25);
    }

    .faq-item.active {
        border-color: rgba(34, 211, 238, 0.35);
        box-shadow: 0 0 30px rgba(34, 211, 238, 0.08);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 20px 24px;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        color: var(--title-color);
        user-select: none;
        position: relative;
        transition: var(--transition-base);
    }

    .faq-question::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 3px;
        background: linear-gradient(180deg, var(--accent), var(--secondary));
        border-radius: 0 4px 4px 0;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .faq-item.active .faq-question::before {
        opacity: 1;
    }

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

    .faq-question .faq-icon {
        width: 28px;
        height: 28px;
        min-width: 28px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.08);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        color: var(--text-sub);
        transition: var(--transition-base);
        margin-left: 16px;
    }

    .faq-item.active .faq-question .faq-icon {
        background: rgba(34, 211, 238, 0.15);
        color: var(--accent);
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        padding: 0 24px;
        font-size: 15px;
        color: var(--text-sub);
        line-height: 1.8;
    }

    .faq-item.active .faq-answer {
        max-height: 300px;
        padding-bottom: 20px;
    }

    /* CTA */
    .cta-section {
        background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        position: relative;
        padding: 100px 0;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(11, 27, 58, 0.92), rgba(14, 42, 90, 0.88));
    }

    .cta-section .container {
        position: relative;
        z-index: 1;
        text-align: center;
    }

    .cta-title {
        font-size: 38px;
        font-weight: 800;
        color: var(--title-color);
        margin-bottom: 18px;
        line-height: 1.3;
    }

    .cta-desc {
        font-size: 17px;
        color: var(--text-sub);
        max-width: 560px;
        margin: 0 auto 40px;
        line-height: 1.8;
    }

    .cta-form {
        display: flex;
        max-width: 480px;
        margin: 0 auto 20px;
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 50px;
        padding: 6px;
        backdrop-filter: blur(12px);
    }

    .cta-form input {
        flex: 1;
        background: transparent;
        border: none;
        outline: none;
        color: var(--title-color);
        font-size: 15px;
        padding: 10px 20px;
        min-height: 44px;
    }

    .cta-form input::placeholder {
        color: var(--text-dim);
    }

    .cta-form input:focus {
        box-shadow: none;
    }

    .cta-form .btn {
        border-radius: 50px;
        padding: 10px 28px;
        font-size: 14px;
        min-height: 44px;
        white-space: nowrap;
    }

    .cta-sub-links {
        display: flex;
        justify-content: center;
        gap: 24px;
        flex-wrap: wrap;
        font-size: 14px;
        color: var(--text-dim);
    }

    .cta-sub-links a {
        color: var(--text-sub);
    }

    .cta-sub-links a:hover {
        color: var(--accent);
    }

    @media (max-width: 576px) {
        .cta-section {
            padding: 70px 0;
        }
        .cta-title {
            font-size: 28px;
        }
        .cta-form {
            flex-direction: column;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-form input {
            text-align: center;
        }
        .cta-form .btn {
            width: 100%;
            margin-top: 6px;
        }
    }

    /* 页脚 */
    .site-footer {
        background: #081026;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding: 70px 0 0;
        position: relative;
    }

    .site-footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.2), transparent);
    }

    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 20px;
        font-weight: 700;
        color: var(--title-color);
        margin-bottom: 16px;
    }

    .footer-desc {
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
        margin-bottom: 20px;
        max-width: 320px;
    }

    .footer-social {
        display: flex;
        gap: 10px;
    }

    .footer-social a {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        color: var(--text-sub);
        transition: var(--transition-base);
    }

    .footer-social a:hover {
        background: rgba(34, 211, 238, 0.1);
        border-color: rgba(34, 211, 238, 0.4);
        color: var(--accent);
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(34, 211, 238, 0.15);
    }

    .footer-col h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--title-color);
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 12px;
    }

    .footer-col h4::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        width: 24px;
        height: 2px;
        background: linear-gradient(90deg, var(--accent), transparent);
        border-radius: 2px;
    }

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

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

    .footer-col ul a {
        color: var(--text-sub);
        font-size: 14px;
        transition: var(--transition-base);
        display: inline-block;
        position: relative;
    }

    .footer-col ul a::before {
        content: '›';
        margin-right: 8px;
        color: var(--accent);
        opacity: 0;
        transform: translateX(-4px);
        transition: all 0.3s ease;
        display: inline-block;
    }

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

    .footer-col ul a:hover::before {
        opacity: 1;
        transform: translateX(0);
    }

    .footer-contact li {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-sub);
        font-size: 14px;
    }

    .footer-contact li i {
        width: 20px;
        text-align: center;
        color: var(--accent);
        font-size: 14px;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        margin-top: 50px;
        padding: 24px 0;
        text-align: center;
    }

    .footer-bottom p {
        font-size: 13px;
        color: var(--text-dim);
        margin-bottom: 0;
    }

    .footer-bottom a {
        color: var(--text-sub);
    }

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

    /* 通用元素 */
    .btn-primary {
        --bs-btn-bg: transparent;
        --bs-btn-border-color: transparent;
        --bs-btn-hover-bg: transparent;
        --bs-btn-hover-border-color: transparent;
    }

    .card {
        --bs-card-bg: transparent;
        --bs-card-border-color: transparent;
    }

    /* 动画 */
    @keyframes floatY {
        0%, 100% {
            transform: translateY(0);
        }
        50% {
            transform: translateY(-10px);
        }
    }

    /* 响应式通用 */
    @media (max-width: 768px) {
        body {
            font-size: 15px;
        }
    }

    @media (max-width: 576px) {
        .section-title {
            font-size: 24px;
        }
        .hero-title {
            font-size: 28px;
        }
    }

/* roulang page: article */
:root {
            --primary: #0B1B3A;
            --primary-light: #0E2A5A;
            --primary-dark: #081026;
            --accent: #22D3EE;
            --accent-blue: #3B82F6;
            --secondary: #7C6FF0;
            --text: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255,255,255,0.06);
            --glass-bg-hover: rgba(255,255,255,0.09);
            --glass-border: rgba(255,255,255,0.12);
            --glass-border-hover: rgba(34,211,238,0.5);
            --radius-lg: 24px;
            --radius-md: 16px;
            --shadow-lg: 0 20px 40px rgba(0,0,0,0.25);
            --shadow-glow: 0 30px 60px rgba(34,211,238,0.15);
            --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
            --transition: all .3s ease;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{
            font-family:var(--font-sans);
            font-size:16px;
            line-height:1.8;
            color:var(--text);
            background:
                radial-gradient(ellipse at 20% 50%,rgba(14,42,90,.4) 0%,transparent 50%),
                radial-gradient(ellipse at 80% 20%,rgba(124,111,240,.12) 0%,transparent 40%),
                linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 50%,var(--primary-dark) 100%);
            background-attachment:fixed;
            overflow-x:hidden;
        }
        body::before{
            content:'';
            position:fixed;
            inset:0;
            z-index:-1;
            background-image:
                radial-gradient(1px 1px at 10% 20%,rgba(255,255,255,.7) 0,transparent 100%),
                radial-gradient(1px 1px at 30% 60%,rgba(255,255,255,.5) 0,transparent 100%),
                radial-gradient(1.5px 1.5px at 50% 15%,rgba(255,255,255,.8) 0,transparent 100%),
                radial-gradient(1px 1px at 70% 45%,rgba(255,255,255,.6) 0,transparent 100%),
                radial-gradient(1px 1px at 85% 25%,rgba(255,255,255,.7) 0,transparent 100%),
                radial-gradient(1px 1px at 15% 75%,rgba(255,255,255,.5) 0,transparent 100%),
                radial-gradient(1px 1px at 60% 85%,rgba(255,255,255,.6) 0,transparent 100%),
                radial-gradient(1.5px 1.5px at 90% 60%,rgba(255,255,255,.5) 0,transparent 100%);
            background-size:150px 150px;
            pointer-events:none;
            opacity:.4;
        }
        .container{max-width:1200px}
        a{color:var(--accent);text-decoration:none;transition:var(--transition)}
        a:hover{color:#7dd3fc}
        img{max-width:100%}
        button{font-family:inherit}

        /* 按钮 */
        .btn{
            border-radius:14px;
            font-weight:600;
            padding:12px 28px;
            transition:var(--transition);
            border:none;
        }
        .btn:focus-visible,.form-control:focus-visible{
            outline:none;
            box-shadow:0 0 0 3px rgba(34,211,238,.3);
        }
        .btn-primary{
            background:linear-gradient(135deg,var(--accent),var(--accent-blue));
            color:#0B1B3A;
            box-shadow:0 0 24px rgba(34,211,238,.35);
        }
        .btn-primary:hover,.btn-primary:focus{
            background:linear-gradient(135deg,#67e8f9,#60a5fa);
            color:#0B1B3A;
            box-shadow:0 0 40px rgba(34,211,238,.6);
            transform:translateY(-2px);
        }
        .btn-primary:active{transform:scale(.97)}
        .btn-glow{animation:glowPulse 3s ease-in-out infinite}
        @keyframes glowPulse{
            0%,100%{box-shadow:0 0 24px rgba(34,211,238,.35)}
            50%{box-shadow:0 0 36px rgba(34,211,238,.6)}
        }
        .btn-outline-light{
            background:rgba(255,255,255,.08);
            color:#E2E8F0;
            border:1px solid rgba(255,255,255,.3);
        }
        .btn-outline-light:hover{
            background:rgba(255,255,255,.15);
            color:#fff;
            border-color:rgba(255,255,255,.5);
            transform:translateY(-2px);
        }
        .btn-sm{padding:8px 20px;font-size:14px}

        /* 导航 */
        .site-header{
            position:sticky;
            top:0;
            z-index:1000;
            background:rgba(8,16,38,.5);
            backdrop-filter:blur(20px);
            -webkit-backdrop-filter:blur(20px);
            border-bottom:1px solid rgba(255,255,255,.06);
            transition:var(--transition);
        }
        .site-header.scrolled{
            background:rgba(11,27,58,.9);
            box-shadow:0 10px 30px rgba(0,0,0,.3);
            border-bottom-color:rgba(255,255,255,.1);
        }
        .navbar{padding:0}
        .navbar-brand{
            display:flex;
            align-items:center;
            gap:10px;
            color:#F8FAFC;
            font-size:20px;
            font-weight:700;
            padding:14px 0;
            letter-spacing:.02em;
        }
        .navbar-brand:hover{color:#F8FAFC}
        .brand-icon{
            width:36px;
            height:36px;
            border-radius:50%;
            background:linear-gradient(135deg,var(--accent),var(--accent-blue));
            display:inline-flex;
            align-items:center;
            justify-content:center;
            color:#0B1B3A;
            font-size:15px;
            box-shadow:0 0 16px rgba(34,211,238,.5);
        }
        .navbar-nav .nav-link{
            color:var(--text-secondary);
            font-size:15px;
            font-weight:500;
            padding:8px 16px;
            border-radius:10px;
            transition:var(--transition);
            position:relative;
        }
        .navbar-nav .nav-link:hover,.navbar-nav .nav-link:focus{
            color:#F8FAFC;
            background:rgba(255,255,255,.06);
            text-shadow:0 0 20px rgba(34,211,238,.3);
        }
        .navbar-nav .nav-link.active{
            color:var(--accent);
            background:rgba(34,211,238,.1);
        }
        .navbar-nav .nav-link.active::after{
            content:'';
            position:absolute;
            left:16px;
            right:16px;
            bottom:2px;
            height:2px;
            background:linear-gradient(90deg,var(--accent),var(--accent-blue));
            border-radius:2px;
        }
        .navbar-toggler{
            border:1px solid rgba(255,255,255,.2);
            padding:8px 10px;
        }
        .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(34,211,238,.3)}
        .navbar-toggler-icon{
            background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28226,232,240,0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* 面包屑 */
        .breadcrumb-wrap{
            padding:32px 0 8px;
            border-bottom:1px solid rgba(255,255,255,.04);
        }
        .breadcrumb{margin:0;background:transparent;flex-wrap:nowrap;overflow:hidden}
        .breadcrumb-item{font-size:13px;display:flex;align-items:center}
        .breadcrumb-item a{color:var(--text-secondary);transition:var(--transition)}
        .breadcrumb-item a:hover{color:var(--accent)}
        .breadcrumb-item.active{
            color:var(--text);
            max-width:280px;
            overflow:hidden;
            text-overflow:ellipsis;
            white-space:nowrap;
        }
        .breadcrumb-item+.breadcrumb-item::before{
            content:'›';
            color:rgba(255,255,255,.4);
            padding:0 8px;
        }

        /* 文章主体 */
        .article-section{
            padding:48px 0 80px;
        }
        .article-header{margin-bottom:24px}
        .article-tags{
            display:flex;
            gap:8px;
            flex-wrap:wrap;
            margin-bottom:14px;
        }
        .badge-tag{
            display:inline-block;
            padding:5px 16px;
            border-radius:50px;
            font-size:12px;
            font-weight:600;
            color:var(--accent);
            background:rgba(34,211,238,.12);
            border:1px solid rgba(34,211,238,.3);
            letter-spacing:.04em;
        }
        .article-header h1{
            font-size:clamp(28px,4vw,42px);
            font-weight:800;
            line-height:1.35;
            color:#F8FAFC;
            margin-bottom:20px;
            letter-spacing:-.015em;
        }
        .article-meta{
            display:flex;
            flex-wrap:wrap;
            gap:24px;
            color:var(--text-secondary);
            font-size:14px;
        }
        .article-meta span{
            display:inline-flex;
            align-items:center;
            gap:8px;
        }
        .article-meta i{color:var(--accent);font-size:13px}
        .article-cover{margin-bottom:32px}
        .article-cover img{
            width:100%;
            border-radius:24px;
            object-fit:cover;
            box-shadow:var(--shadow-lg);
            border:1px solid rgba(255,255,255,.08);
        }

        /* 正文 */
        .article-content{
            font-size:17px;
            line-height:1.95;
            color:#D8E1EC;
        }
        .article-content h2{
            font-size:28px;
            font-weight:700;
            color:#F8FAFC;
            margin:40px 0 16px;
            letter-spacing:-.01em;
        }
        .article-content h3{
            font-size:22px;
            font-weight:600;
            color:#F8FAFC;
            margin:32px 0 14px;
        }
        .article-content p{margin-bottom:20px}
        .article-content ul,.article-content ol{
            padding-left:24px;
            margin-bottom:20px;
        }
        .article-content li{margin-bottom:8px}
        .article-content blockquote{
            border-left:3px solid var(--accent);
            background:rgba(34,211,238,.08);
            padding:16px 20px;
            border-radius:0 12px 12px 0;
            margin:24px 0;
            color:#CBD5E1;
            font-style:normal;
        }
        .article-content a{
            color:var(--accent);
            text-decoration:underline;
            text-decoration-color:rgba(34,211,238,.4);
            transition:var(--transition);
        }
        .article-content a:hover{
            color:#7dd3fc;
            text-decoration-color:#7dd3fc;
        }
        .article-content img{
            max-width:100%;
            border-radius:14px;
            margin:24px 0;
        }
        .article-content table{
            width:100%;
            margin:24px 0;
            border-collapse:collapse;
            background:rgba(255,255,255,.04);
            border-radius:12px;
            overflow:hidden;
        }
        .article-content table th,
        .article-content table td{
            padding:12px 16px;
            border-bottom:1px solid rgba(255,255,255,.08);
            text-align:left;
            font-size:15px;
        }
        .article-content table th{
            background:rgba(255,255,255,.08);
            font-weight:600;
            color:#F8FAFC;
        }
        .article-content table tr:last-child td{border-bottom:none}
        .article-content code{
            background:rgba(124,111,240,.15);
            color:#a5b4fc;
            padding:2px 6px;
            border-radius:6px;
            font-size:14px;
        }
        .article-content pre{
            background:rgba(8,16,38,.7);
            border:1px solid rgba(255,255,255,.08);
            border-radius:12px;
            padding:20px;
            overflow-x:auto;
            margin:24px 0;
        }
        .article-content pre code{
            background:transparent;
            color:#E2E8F0;
            padding:0;
        }

        /* 文末操作 */
        .article-more{
            margin-top:40px;
            padding-top:24px;
            border-top:1px solid rgba(255,255,255,.08);
            text-align:center;
        }
        .more-link{
            display:inline-flex;
            align-items:center;
            gap:8px;
            color:var(--accent);
            font-weight:600;
            font-size:15px;
            padding:10px 24px;
            border-radius:50px;
            border:1px solid rgba(34,211,238,.3);
            background:rgba(34,211,238,.08);
            transition:var(--transition);
        }
        .more-link:hover{
            background:rgba(34,211,238,.18);
            border-color:rgba(34,211,238,.6);
            transform:translateY(-2px);
            color:var(--accent);
        }
        .more-link i{font-size:13px;transition:transform .3s}
        .more-link:hover i{transform:translateX(4px)}

        /* 空态 */
        .article-empty{
            background:var(--glass-bg);
            border:1px solid var(--glass-border);
            border-radius:var(--radius-lg);
            padding:60px 32px;
            text-align:center;
        }
        .article-empty i{
            font-size:48px;
            color:var(--text-muted);
            margin-bottom:16px;
        }
        .article-empty h2{
            font-size:24px;
            color:#F8FAFC;
            margin-bottom:12px;
        }
        .article-empty p{
            color:var(--text-secondary);
            margin-bottom:24px;
        }

        /* 返回入口 */
        .article-back{
            margin-top:40px;
            text-align:center;
        }
        .btn-back{
            display:inline-flex;
            align-items:center;
            gap:8px;
            padding:12px 28px;
            border-radius:50px;
            background:var(--glass-bg);
            border:1px solid var(--glass-border);
            color:var(--text-secondary);
            font-size:14px;
            font-weight:600;
            transition:var(--transition);
        }
        .btn-back:hover{
            color:var(--accent);
            border-color:rgba(34,211,238,.4);
            background:var(--glass-bg-hover);
            transform:translateX(-4px);
        }

        /* 侧边栏 */
        .sidebar-wrap{
            position:sticky;
            top:100px;
        }
        .sidebar-card{
            background:var(--glass-bg);
            border:1px solid var(--glass-border);
            border-radius:var(--radius-lg);
            padding:28px;
            margin-bottom:24px;
            backdrop-filter:blur(12px);
            -webkit-backdrop-filter:blur(12px);
            transition:var(--transition);
        }
        .sidebar-card:hover{
            border-color:rgba(255,255,255,.18);
        }
        .sidebar-card h3{
            font-size:18px;
            font-weight:700;
            color:#F8FAFC;
            margin-bottom:20px;
            padding-bottom:14px;
            border-bottom:1px solid rgba(255,255,255,.08);
            position:relative;
        }
        .sidebar-card h3::after{
            content:'';
            position:absolute;
            bottom:-1px;
            left:0;
            width:42px;
            height:3px;
            background:linear-gradient(90deg,var(--accent),var(--accent-blue));
            border-radius:2px;
        }
        .sidebar-brand{
            text-align:center;
            padding:8px 0 4px;
        }
        .sidebar-brand .brand-icon{
            width:52px;
            height:52px;
            font-size:22px;
            margin-bottom:12px;
        }
        .sidebar-brand h4{
            font-size:18px;
            font-weight:700;
            color:#F8FAFC;
            margin-bottom:8px;
        }
        .sidebar-brand p{
            font-size:13px;
            color:var(--text-secondary);
            line-height:1.7;
            margin-bottom:16px;
        }
        .sidebar-nav{
            list-style:none;
            padding:0;
            margin:0;
        }
        .sidebar-nav li{
            margin-bottom:4px;
        }
        .sidebar-nav a{
            display:flex;
            align-items:center;
            gap:10px;
            padding:10px 14px;
            border-radius:10px;
            color:var(--text-secondary);
            font-size:14px;
            font-weight:500;
            transition:var(--transition);
        }
        .sidebar-nav a i{
            width:18px;
            text-align:center;
            color:var(--accent);
            font-size:13px;
        }
        .sidebar-nav a:hover{
            background:rgba(255,255,255,.06);
            color:#F8FAFC;
            padding-left:18px;
        }
        .sidebar-hot-list{
            list-style:none;
            padding:0;
            margin:0;
        }
        .sidebar-hot-list li{
            padding:12px 0;
            border-bottom:1px solid rgba(255,255,255,.06);
        }
        .sidebar-hot-list li:last-child{
            border-bottom:none;
            padding-bottom:0;
        }
        .sidebar-hot-list a{
            color:var(--text);
            font-size:14px;
            font-weight:500;
            line-height:1.6;
            display:block;
            transition:var(--transition);
        }
        .sidebar-hot-list a:hover{
            color:var(--accent);
        }
        .sidebar-hot-list .hot-date{
            font-size:12px;
            color:var(--text-muted);
            margin-top:4px;
        }

        /* 相关推荐 */
        .related-section{
            padding:60px 0 90px;
            background:linear-gradient(180deg,transparent,rgba(8,16,38,.4));
        }
        .related-section .section-title{
            font-size:32px;
            font-weight:700;
            color:#F8FAFC;
            text-align:center;
            margin-bottom:40px;
            position:relative;
        }
        .section-title i{
            color:var(--accent);
            margin-right:10px;
            font-size:28px;
        }
        .related-card{
            background:var(--glass-bg);
            border:1px solid var(--glass-border);
            border-radius:var(--radius-lg);
            overflow:hidden;
            transition:var(--transition);
            height:100%;
        }
        .related-card:hover{
            transform:translateY(-6px);
            border-color:var(--glass-border-hover);
            box-shadow:var(--shadow-glow);
        }
        .related-card-img{
            padding:10px 10px 0;
        }
        .related-card-img img{
            width:100%;
            border-radius:16px;
            object-fit:cover;
            aspect-ratio:16/9;
        }
        .related-card-body{
            padding:20px 22px 24px;
        }
        .related-card-body .rel-date{
            font-size:13px;
            color:var(--text-muted);
            margin-bottom:8px;
        }
        .related-card-body h4{
            font-size:18px;
            font-weight:700;
            color:#F8FAFC;
            line-height:1.5;
            margin-bottom:10px;
        }
        .related-card-body h4 a{
            color:inherit;
        }
        .related-card-body h4 a:hover{
            color:var(--accent);
        }
        .related-card-body p{
            font-size:14px;
            color:var(--text-secondary);
            line-height:1.7;
            margin-bottom:14px;
        }
        .related-card-body .rel-link{
            font-size:14px;
            font-weight:600;
            color:var(--accent);
        }
        .related-card-body .rel-link i{
            font-size:12px;
            margin-left:4px;
            transition:transform .3s;
        }
        .related-card-body .rel-link:hover i{
            transform:translateX(4px);
        }

        /* 页脚 */
        .site-footer{
            background:var(--primary-dark);
            border-top:1px solid rgba(255,255,255,.08);
            padding:70px 0 30px;
            position:relative;
            z-index:2;
        }
        .footer-brand{
            display:flex;
            align-items:center;
            gap:10px;
            color:#F8FAFC;
            font-size:20px;
            font-weight:700;
            margin-bottom:12px;
        }
        .footer-desc{
            color:var(--text-muted);
            font-size:14px;
            line-height:1.8;
            margin-bottom:20px;
            max-width:340px;
        }
        .footer-social{
            display:flex;
            gap:10px;
        }
        .footer-social a{
            width:40px;
            height:40px;
            border-radius:50%;
            display:flex;
            align-items:center;
            justify-content:center;
            background:rgba(255,255,255,.06);
            border:1px solid rgba(255,255,255,.1);
            color:var(--text-secondary);
            font-size:14px;
            transition:var(--transition);
        }
        .footer-social a:hover{
            background:rgba(34,211,238,.15);
            border-color:rgba(34,211,238,.4);
            color:var(--accent);
            transform:translateY(-3px);
        }
        .footer-col h4{
            font-size:16px;
            font-weight:600;
            color:#F8FAFC;
            margin-bottom:18px;
            position:relative;
            padding-bottom:10px;
        }
        .footer-col h4::after{
            content:'';
            position:absolute;
            left:0;
            bottom:0;
            width:24px;
            height:2px;
            background:linear-gradient(90deg,var(--accent),var(--accent-blue));
            border-radius:2px;
        }
        .footer-col ul{
            list-style:none;
            padding:0;
            margin:0;
        }
        .footer-col ul li{
            margin-bottom:10px;
        }
        .footer-col ul a{
            color:var(--text-secondary);
            font-size:14px;
            transition:var(--transition);
        }
        .footer-col ul a:hover{
            color:var(--accent);
            padding-left:4px;
        }
        .footer-contact li{
            color:var(--text-secondary);
            font-size:14px;
            display:flex;
            align-items:center;
            gap:10px;
        }
        .footer-contact i{
            color:var(--accent);
            font-size:13px;
            width:16px;
        }
        .footer-bottom{
            margin-top:50px;
            padding-top:24px;
            border-top:1px solid rgba(255,255,255,.08);
            text-align:center;
            display:flex;
            flex-wrap:wrap;
            justify-content:center;
            gap:12px 24px;
        }
        .footer-bottom p{
            margin:0;
            color:var(--text-muted);
            font-size:13px;
        }

        /* 响应式 */
        @media (max-width:991.98px){
            .sidebar-wrap{
                position:static;
                margin-top:48px;
            }
            .navbar-collapse{
                background:rgba(8,16,38,.95);
                backdrop-filter:blur(20px);
                -webkit-backdrop-filter:blur(20px);
                border-radius:0 0 var(--radius-md) var(--radius-md);
                padding:16px 20px;
                border:1px solid rgba(255,255,255,.06);
                border-top:none;
                margin-top:0;
            }
            .navbar-nav .nav-link{
                padding:12px 16px;
                font-size:16px;
            }
            .navbar-collapse .btn{
                margin-top:16px;
                width:100%;
                margin-left:0 !important;
            }
        }
        @media (max-width:767.98px){
            .breadcrumb-wrap{padding:20px 0 0}
            .article-section{padding:28px 0 60px}
            .article-meta{gap:12px;font-size:13px}
            .article-header h1{font-size:26px}
            .related-section{padding:40px 0 70px}
            .related-section .section-title{font-size:26px}
            .site-footer{padding:50px 0 24px}
            .footer-bottom{flex-direction:column;gap:8px}
            .footer-col{margin-bottom:28px}
        }
        @media (max-width:575.98px){
            .navbar-brand{font-size:17px}
            .article-content{font-size:16px;line-height:1.85}
            .article-content h2{font-size:23px}
            .article-back .btn-back{width:100%;justify-content:center}
            .article-more .more-link{width:100%;justify-content:center}
        }

/* roulang page: category2 */
:root {
            --bg-deep: #081026;
            --bg-mid: #0B1B3A;
            --bg-light: #0E203C;
            --accent: #22D3EE;
            --accent-2: #3B82F6;
            --secondary: #8B5CF6;
            --text-light: #F8FAFC;
            --text-body: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(255, 255, 255, 0.12);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.25);
            --shadow-glow: 0 0 24px rgba(34, 211, 238, 0.35);
            --section-space: 110px;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
            --font-display: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background-color: var(--bg-deep);
            background-image:
                radial-gradient(circle at 88% 5%, rgba(59, 130, 246, 0.16), transparent 26%),
                radial-gradient(circle at 8% 92%, rgba(139, 92, 246, 0.1), transparent 24%);
            background-repeat: no-repeat;
            color: var(--text-body);
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -2;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 72px 72px;
            mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 78%);
            -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 78%);
        }

        a {
            color: #7DD3FC;
            text-decoration: none;
            transition: all 0.2s ease;
        }

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

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

        p {
            margin: 0 0 1rem;
        }

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

        section {
            scroll-margin-top: 110px;
        }

        .container {
            max-width: 1220px;
        }

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

        .section-head {
            margin-bottom: 52px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            color: var(--text-light);
            font-weight: 800;
            font-size: clamp(1.85rem, 3vw, 2.6rem);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 780px;
            font-size: 16px;
            line-height: 1.85;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1090;
            height: auto;
            border-bottom: 1px solid transparent;
            transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header .navbar {
            padding: 0;
            min-height: 78px;
        }

        .site-header.scrolled {
            background: rgba(8, 16, 38, 0.82);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.28);
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: #fff;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, #22D3EE, #3B82F6 70%, #7C6FF0);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.45);
            color: #081026;
            font-size: 16px;
        }

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

        .navbar-nav .nav-link {
            color: rgba(226, 232, 240, 0.86);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 16px !important;
            border-radius: 999px;
            position: relative;
            transition: color 0.25s ease, background 0.25s ease;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            background: rgba(34, 211, 238, 0.12);
            box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.34);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 2px;
            width: 18px;
            height: 2px;
            border-radius: 999px;
            background: #22D3EE;
            transform: translateX(-50%);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.8);
        }

        .navbar-toggler {
            border: 0;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
        }

        .navbar-toggler:focus {
            outline: 2px solid rgba(34, 211, 238, 0.6);
            outline-offset: 2px;
            box-shadow: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='rgba(255,255,255,.9)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .btn {
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18), var(--shadow-glow);
        }

        .btn-primary {
            color: #081026;
            background: linear-gradient(135deg, #22D3EE, #3B82F6);
            border: none;
            border-radius: 12px;
            padding: 13px 30px;
            font-weight: 700;
            box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            box-shadow: 0 0 40px rgba(34, 211, 238, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            color: #081026;
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn.btn-sm {
            padding: 9px 22px;
            font-size: 14px;
            border-radius: 999px;
        }

        .btn-outline-light {
            color: #E2E8F0;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.32);
            border-radius: 12px;
            padding: 12px 28px;
            backdrop-filter: blur(8px);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-glow {
            animation: starBreath 3.2s ease-in-out infinite;
        }

        @keyframes starBreath {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(34, 211, 238, 0.28), 0 8px 28px rgba(59, 130, 246, 0.2);
            }
            50% {
                box-shadow: 0 0 44px rgba(34, 211, 238, 0.52), 0 8px 38px rgba(59, 130, 246, 0.38);
            }
        }

        .page-hero {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 94vh;
            padding: 215px 0 130px;
            overflow: hidden;
            background-image:
                radial-gradient(circle at 68% 32%, rgba(59, 130, 246, 0.18), transparent 22%),
                linear-gradient(180deg, rgba(8, 16, 38, 0.72), rgba(8, 16, 38, 0.95)),
                url("/assets/images/backpic/back-2.png");
            background-size: cover;
            background-position: center;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: auto -10% -20% -10%;
            height: 40%;
            background: radial-gradient(ellipse at center, rgba(34, 211, 238, 0.1), transparent 65%);
            pointer-events: none;
        }

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

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.14);
            border: 1px solid rgba(34, 211, 238, 0.35);
            color: #7DD3FC;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 22px;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.1);
        }

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

        .hero-title {
            color: #F8FAFC;
            font-family: var(--font-display);
            font-weight: 800;
            font-size: clamp(3.1rem, 6vw, 5.2rem);
            line-height: 1.12;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
        }

        .hero-title span {
            background: linear-gradient(120deg, #22D3EE, #7DD3FC, #A5B4FC);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-text {
            max-width: 760px;
            color: #CBD5E1;
            font-size: clamp(1rem, 1.3vw, 1.18rem);
            line-height: 2;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 46px;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            padding: 18px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            max-width: 760px;
        }

        .hero-trust li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #A9B5C6;
            font-size: 14px;
        }

        .hero-trust li i {
            color: #22D3EE;
            font-size: 15px;
        }

        .split-block {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            align-items: center;
            gap: 68px;
        }

        .split-block .eyebrow {
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            letter-spacing: 0.12em;
            margin-bottom: 12px;
        }

        .split-block h2 {
            color: #F8FAFC;
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            line-height: 1.34;
            font-weight: 800;
            margin-bottom: 22px;
            letter-spacing: -0.02em;
        }

        .split-copy {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.95;
        }

        .split-copy strong {
            color: #DFE9F2;
            font-weight: 600;
        }

        .visual-wrap {
            position: relative;
        }

        .visual-main {
            border-radius: 30px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.16);
            box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.1);
            background: linear-gradient(135deg, #0B1B3A, #11264A);
        }

        .visual-main img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            min-height: 320px;
            max-height: 440px;
        }

        .visual-note {
            position: absolute;
            right: -12px;
            bottom: 32px;
            background: linear-gradient(145deg, rgba(17, 38, 74, 0.98), rgba(8, 16, 38, 0.92));
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 20px;
            padding: 16px 20px;
            box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(20px);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #E2E8F0;
        }

        .visual-note i {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: #081026;
            background: linear-gradient(135deg, #22D3EE, #8B5CF6);
        }

        .section-topic {
            background: linear-gradient(180deg, rgba(10, 22, 45, 0.62), rgba(8, 16, 38, 0.85));
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .topic-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.028));
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            width: 100%;
            height: 100%;
            padding: 32px 30px 28px;
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(18px);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.09), 0 20px 45px rgba(0, 0, 0, 0.16);
            transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
        }

        .topic-card:hover {
            transform: translateY(-7px);
            border-color: rgba(34, 211, 238, 0.44);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 30px 60px rgba(34, 211, 238, 0.14);
        }

        .topic-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(59, 130, 246, 0.2));
            box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.28);
            color: #67E8F9;
            font-size: 22px;
            margin-bottom: 24px;
        }

        .topic-card h3 {
            color: #F8FAFC;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .topic-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            flex: 1;
        }

        .topic-meta {
            margin-top: 24px;
            color: #67E8F9;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: gap 0.25s ease;
        }

        .topic-card:hover .topic-meta {
            gap: 14px;
        }

        .quality-panel {
            background: rgba(255, 255, 255, 0.035);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 30px;
            overflow: hidden;
            padding: 54px 0 46px;
            position: relative;
        }

        .quality-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 86% 0%, rgba(139, 92, 246, 0.16), transparent 42%), radial-gradient(circle at 8% 100%, rgba(34, 211, 238, 0.12), transparent 36%);
            pointer-events: none;
        }

        .quality-panel .container {
            position: relative;
            z-index: 1;
        }

        .quality-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .quality-card {
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 30px 26px;
            min-height: 220px;
            display: flex;
            flex-direction: column;
        }

        .quality-card .q-icon {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(34, 211, 238, 0.1);
            color: #22D3EE;
            margin-bottom: 22px;
            font-size: 17px;
        }

        .quality-card:nth-child(2) .q-icon {
            background: rgba(139, 92, 246, 0.14);
            color: #A78BFA;
        }

        .quality-card:nth-child(3) .q-icon {
            background: rgba(56, 189, 248, 0.14);
            color: #56C2F8;
        }

        .quality-card h3 {
            color: #F1F5F9;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .quality-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        .manifesto {
            position: relative;
            padding: 110px 0;
            background-image:
                linear-gradient(180deg, rgba(8, 16, 38, 0.92), rgba(8, 16, 38, 0.86)),
                url("/assets/images/backpic/back-3.png");
            background-size: cover;
            background-position: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .manifesto-inner {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .manifesto-inner .quote-mark {
            color: var(--accent);
            font-size: 40px;
            display: block;
            margin-bottom: 22px;
            opacity: 0.8;
        }

        .manifesto-inner p {
            color: var(--text-light);
            font-size: clamp(1.2rem, 2vw, 1.7rem);
            font-weight: 700;
            line-height: 1.65;
            letter-spacing: 0.01em;
            margin-bottom: 26px;
            text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .manifesto-inner small {
            color: var(--text-muted);
            font-size: 15px;
            letter-spacing: 0.06em;
        }

        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }

        .accordion-item {
            background: rgba(255, 255, 255, 0.035);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 18px;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
        }

        .accordion-button {
            background: transparent;
            border: 0;
            color: #F1F5F9;
            font-weight: 600;
            font-size: 16px;
            padding: 22px 26px;
            line-height: 1.7;
            position: relative;
            transition: background 0.3s ease, color 0.3s ease;
        }

        .accordion-button:not(.collapsed) {
            background: linear-gradient(90deg, rgba(34, 211, 238, 0.11), transparent);
            color: #A5F3FC;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(34, 211, 238, 0.5);
            outline-offset: -2px;
        }

        .accordion-button::after {
            filter: invert(1) brightness(1.5);
            opacity: 0.8;
        }

        .accordion-button:not(.collapsed)::after {
            filter: invert(1) brightness(1.8) drop-shadow(0 0 6px rgba(34, 211, 238, 0.8));
        }

        .accordion-body {
            padding: 0 26px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.9;
        }

        .contact-cta {
            position: relative;
            padding: 110px 0;
            background-image:
                radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.2), transparent 42%),
                linear-gradient(180deg, #0A1633, #081026);
        }

        .contact-cta::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 0;
            width: 620px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.5), transparent);
            transform: translateX(-50%);
        }

        .cta-panel {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-panel h2 {
            color: #fff;
            font-weight: 800;
            font-size: clamp(1.9rem, 3.6vw, 3rem);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .cta-panel .lead-copy {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto 38px;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 12px;
        }

        .contact-form .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: stretch;
            justify-content: center;
        }

        .form-control {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 14px;
            color: #F1F5F9;
            min-height: 50px;
            padding: 12px 18px;
            font-size: 15px;
            flex: 1 1 220px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }

        .form-control:focus {
            background: rgba(255, 255, 255, 0.09);
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.14), 0 0 20px rgba(34, 211, 238, 0.1);
            color: #fff;
        }

        .form-control::placeholder {
            color: #64748B;
        }

        .contact-form .btn-submit {
            flex: 0 0 auto;
            min-width: 146px;
        }

        .form-status {
            margin-top: 6px;
            color: var(--accent);
            font-size: 14px;
            min-height: 24px;
        }

        .contact-contact-info {
            margin-top: 20px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 28px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .contact-contact-info a,
        .contact-contact-info span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .contact-contact-info i {
            color: var(--accent);
        }

        .site-footer {
            background: #060B1A;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 70px 0 26px;
        }

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

        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            font-size: 14px;
        }

        .footer-desc {
            color: #7C8AA3;
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 24px;
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.14);
            color: #A7B2C5;
            font-size: 16px;
            transition: all 0.25s ease;
        }

        .footer-social a:hover {
            color: #081026;
            background: linear-gradient(135deg, #22D3EE, #8B5CF6);
            border-color: transparent;
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.38);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            color: #E2E8F0;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-col ul li a {
            color: #8494AA;
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.25s ease;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 5px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #8494AA;
            font-size: 14px;
        }

        .footer-contact i {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 42px;
            padding-top: 26px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: #5B6D85;
            font-size: 13px;
        }

        .footer-bottom a {
            color: #6C7D96;
        }

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

        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        ::selection {
            background: rgba(34, 211, 238, 0.25);
            color: #fff;
        }

        @media (max-width: 1199.98px) {
            .split-block {
                gap: 48px;
            }
            .quality-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991.98px) {
            .section {
                --section-space: 76px;
            }
            .site-header.scrolled {
                background: rgba(8, 16, 38, 0.94);
            }
            .navbar-collapse {
                background: rgba(8, 16, 38, 0.98);
                border: 1px solid rgba(255, 255, 255, 0.1);
                border-radius: 20px;
                padding: 14px 18px;
                margin-top: 12px;
                box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42);
                backdrop-filter: blur(24px);
            }
            .navbar-nav {
                align-items: stretch;
                gap: 2px;
            }
            .navbar-nav .nav-link {
                border-radius: 12px;
                padding: 12px 18px !important;
            }
            .navbar-nav .nav-link.active::after {
                left: 18px;
                bottom: 8px;
                transform: none;
                width: 10px;
                height: 10px;
                border-radius: 50%;
            }
            .navbar-nav .nav-link.active {
                box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.28);
            }
            .navbar .btn {
                margin: 14px 4px 10px;
                width: 100%;
            }
            .page-hero {
                padding: 178px 0 90px;
                min-height: 88vh;
            }
            .split-block {
                grid-template-columns: 1fr;
            }
            .visual-wrap {
                max-width: 540px;
                margin: 0 auto;
            }
            .visual-note {
                right: 6px;
                bottom: 18px;
            }
            .quality-grid {
                grid-template-columns: 1fr 1fr;
            }
            .manifesto {
                padding: 90px 0;
            }
            .contact-cta {
                padding: 88px 0;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                --section-space: 62px;
            }
            .hero-title {
                font-size: clamp(2.55rem, 12vw, 3.4rem);
            }
            .hero-trust {
                gap: 16px;
                flex-direction: column;
                padding-top: 18px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .quality-grid {
                grid-template-columns: 1fr;
            }
            .quality-panel {
                border-radius: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .contact-contact-info {
                flex-direction: column;
                gap: 12px;
            }
            .topic-card {
                padding: 26px 22px;
            }
        }

        @media (max-width: 575.98px) {
            .page-hero {
                min-height: 92vh;
                padding: 160px 0 80px;
            }
            .hero-kicker {
                font-size: 12px;
            }
            .hero-text {
                font-size: 16px;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .split-copy {
                font-size: 15px;
            }
            .visual-note {
                left: 12px;
                right: 12px;
                bottom: -20px;
                justify-content: center;
            }
            .visual-main img {
                max-height: 300px;
                min-height: 240px;
            }
            .accordion-button {
                padding: 18px 18px;
                font-size: 15px;
            }
            .accordion-body {
                padding: 0 18px 20px;
            }
            .cta-panel h2 {
                font-size: 1.7rem;
            }
            .contact-form .btn-submit {
                width: 100%;
            }
            .footer-social a {
                width: 44px;
                height: 44px;
            }
        }