/* roulang page: index */
:root {
            --primary: #0a2540;
            --primary-light: #133a5e;
            --accent: #2563eb;
            --accent-light: #3b82f6;
            --bg: #f8fafc;
            --bg-alt: #eef2f7;
            --white: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(10, 37, 64, 0.06);
            --shadow-md: 0 8px 32px rgba(10, 37, 64, 0.10);
            --shadow-lg: 0 16px 48px rgba(10, 37, 64, 0.14);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: all 0.25s ease;
            --header-height: 76px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.35;
            font-weight: 700;
        }
        p {
            margin: 0;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }
        .grid-container {
            max-width: 1280px;
        }
        .section-pad {
            padding: 96px 0;
        }
        .bg-alt {
            background: var(--bg-alt);
        }
        .text-center {
            text-align: center;
        }
        .section-head {
            margin-bottom: 52px;
        }
        .section-head h2 {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.1);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            border: 2px solid transparent;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(37, 99, 235, 0.4);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: #fff;
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: var(--bg-alt);
            border-color: var(--bg-alt);
        }
        .btn-block {
            width: 100%;
            padding: 14px 24px;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 16px;
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid var(--accent);
            color: var(--accent);
            padding: 10px 26px;
            font-size: 14px;
        }
        .btn-secondary:hover {
            background: var(--accent);
            color: #fff;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            max-width: 1280px;
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 25px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            display: inline-flex;
            align-items: center;
            gap: 2px;
            line-height: 1;
        }
        .logo span {
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 38px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 2px;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.2px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 4px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .main-nav a.active::after {
            transform: scaleX(1);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--white);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero */
        .hero {
            position: relative;
            padding: calc(var(--header-height) + 80px) 0 90px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(130deg, rgba(10, 37, 64, 0.96) 0%, rgba(10, 37, 64, 0.82) 45%, rgba(37, 99, 235, 0.45) 100%);
        }
        .hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            color: #fff;
            padding-right: 40px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 40px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: #7dd3fc;
        }
        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin-bottom: 32px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .hero-trust {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero-trust span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust i {
            color: #7dd3fc;
        }
        .hero-card {
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 36px 32px;
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .hero-card-head {
            text-align: center;
            margin-bottom: 28px;
        }
        .hero-card-head h3 {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .hero-card-head span {
            font-size: 13px;
            color: var(--text-light);
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
        }
        .form-group label i {
            margin-right: 4px;
            color: var(--accent);
        }
        .form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            transition: var(--transition);
            background: var(--bg);
            color: var(--text);
            outline: none;
        }
        .form-group input:focus {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
        }
        .form-group input::placeholder {
            color: #94a3b8;
        }
        .form-extra {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            margin: 14px 0 20px;
            color: var(--text-light);
        }
        .form-extra label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
        }
        .form-extra input[type="checkbox"] {
            width: 16px;
            height: 16px;
            accent-color: var(--accent);
        }
        .form-extra a {
            color: var(--accent);
            font-weight: 500;
        }
        .form-extra a:hover {
            text-decoration: underline;
        }
        .hero-card-foot {
            text-align: center;
            font-size: 12px;
            color: var(--text-light);
            margin-top: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .hero-card-foot i {
            color: #10b981;
        }

        /* Features */
        .features {
            background: var(--bg);
        }
        .feature-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 26px;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(37, 99, 235, 0.04));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Categories */
        .categories {
            background: var(--bg-alt);
        }
        .category-card {
            display: block;
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            height: 100%;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .cat-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .cat-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(10, 37, 64, 0.55) 100%);
        }
        .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .cat-img img {
            transform: scale(1.06);
        }
        .cat-body {
            padding: 26px 24px 28px;
        }
        .cat-body h3 {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .cat-body p {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }
        .cat-link i {
            transition: transform 0.25s ease;
        }
        .category-card:hover .cat-link i {
            transform: translateX(4px);
        }

        /* News */
        .news-section {
            background: var(--bg);
        }
        .news-section .section-head {
            text-align: left;
            margin-bottom: 0;
        }
        .news-section .section-head h2 {
            font-size: 34px;
        }
        .news-section .section-head p {
            margin: 0 0 24px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: block;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateX(4px);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 8px;
        }
        .news-cat {
            display: inline-block;
            background: rgba(37, 99, 235, 0.1);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
        }
        .news-date {
            font-size: 12px;
            color: var(--text-light);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .news-item h3 {
            font-size: 17px;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
            transition: var(--transition);
        }
        .news-item:hover h3 {
            color: var(--accent);
        }
        .news-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-empty {
            background: var(--white);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 48px;
            text-align: center;
            color: var(--text-light);
        }
        .news-empty i {
            font-size: 32px;
            margin-bottom: 12px;
            display: block;
        }

        /* Stats */
        .stats-section {
            background: url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat;
            position: relative;
            padding: 80px 0;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 37, 64, 0.95), rgba(37, 99, 235, 0.8));
        }
        .stats-section .grid-container {
            position: relative;
            z-index: 2;
        }
        .stat-block {
            text-align: center;
            color: #fff;
            padding: 24px;
        }
        .stat-num {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .stat-block p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
        }

        /* Process */
        .process {
            background: var(--bg);
        }
        .process-step {
            text-align: center;
            padding: 32px 20px;
            position: relative;
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: var(--white);
            border: 2px solid var(--accent);
            color: var(--accent);
            font-size: 16px;
            font-weight: 800;
            box-shadow: var(--shadow-sm);
            margin-bottom: 20px;
        }
        .process-step h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Advantages */
        .advantages {
            background: var(--bg-alt);
        }
        .advantages img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }
        .advantages .section-tag {
            margin-bottom: 12px;
        }
        .advantages h2 {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 28px;
        }
        .advantage-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .advantage-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .advantage-item:last-child {
            border-bottom: none;
        }
        .advantage-item i {
            font-size: 22px;
            color: var(--accent);
            background: rgba(37, 99, 235, 0.1);
            width: 46px;
            height: 46px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .advantage-item h3 {
            font-size: 17px;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .advantage-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* FAQ */
        .faq {
            background: var(--bg);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            box-shadow: var(--shadow-sm);
            border-color: rgba(37, 99, 235, 0.3);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 18px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 0;
        }

        /* CTA */
        .cta-section {
            padding: 48px 0 96px;
            background: var(--bg);
        }
        .cta-box {
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 72px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 37, 64, 0.9), rgba(37, 99, 235, 0.65));
        }
        .cta-box>* {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: 34px;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 0;
        }
        .site-footer .grid-container {
            padding-bottom: 48px;
        }
        .footer-logo {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: block;
            margin-bottom: 16px;
        }
        .footer-logo span {
            color: var(--accent-light);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 300px;
        }
        .site-footer h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .site-footer h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent-light);
            border-radius: 2px;
        }
        .site-footer ul li {
            margin-bottom: 12px;
            font-size: 14px;
        }
        .site-footer ul li a {
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 38px;
            }
            .hero {
                padding: calc(var(--header-height) + 60px) 0 60px;
            }
            .hero-card {
                padding: 28px 22px;
            }
            .stat-num {
                font-size: 38px;
            }
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 64px 0;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                padding: 16px 24px;
                flex-direction: column;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 8px;
                font-size: 16px;
                border-bottom: 1px solid var(--bg-alt);
            }
            .main-nav a::after {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .hero-content {
                padding-right: 0;
                text-align: center;
                margin-bottom: 40px;
            }
            .hero-content p {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-trust {
                justify-content: center;
            }
            .hero-card {
                margin: 0 auto;
                max-width: 420px;
            }
            .news-section .section-head {
                text-align: center;
                margin-bottom: 32px;
            }
            .news-section .section-head p {
                margin-left: auto;
                margin-right: auto;
            }
            .advantages h2 {
                font-size: 28px;
            }
            .advantages img {
                margin-bottom: 32px;
            }
            .cta-box {
                padding: 48px 24px;
            }
            .cta-box h2 {
                font-size: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-buttons .btn {
                width: 100%;
                margin-bottom: 8px;
            }
            .hero-trust {
                flex-direction: column;
                gap: 8px;
                align-items: center;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .stat-num {
                font-size: 32px;
            }
            .process-step {
                padding: 20px 12px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a4b8c;
            --primary-dark: #0f3460;
            --primary-light: #4a7cc9;
            --accent: #d4a843;
            --accent-light: #f0d894;
            --bg-light: #f5f8fc;
            --bg-white: #ffffff;
            --text-dark: #1b2a41;
            --text-body: #4a5a6f;
            --text-muted: #7d8fa4;
            --border-light: #e4ebf3;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 10px rgba(15, 52, 96, 0.06);
            --shadow-md: 0 8px 30px rgba(15, 52, 96, 0.10);
            --shadow-lg: 0 20px 50px rgba(15, 52, 96, 0.14);
            --transition: all 0.35s ease;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul, ol { list-style: none; }
        .grid-container { max-width: 1200px; }
        
        /* ===== Header 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            display: inline-flex;
            align-items: baseline;
        }
        .logo span { color: var(--accent); font-weight: 700; }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 40px;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--primary); background: rgba(26,75,140,0.06); }
        .main-nav a.active { color: var(--primary); font-weight: 600; background: rgba(26,75,140,0.08); }
        .main-nav a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            padding: 8px;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover { background: rgba(26,75,140,0.06); }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        
        /* ===== Hero 内页 Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #2d6cb8 100%);
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -40px;
            right: -20px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(212,168,67,0.14);
            filter: blur(60px);
        }
        .page-hero .grid-container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.14);
            border: 1px solid rgba(255,255,255,0.22);
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i { color: var(--accent-light); }
        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-hero h1 span { color: var(--accent-light); }
        .page-hero p.lead {
            font-size: 17px;
            line-height: 1.8;
            max-width: 640px;
            opacity: 0.92;
            margin-bottom: 28px;
        }
        .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: #1b2a41;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.7);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.18);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.45);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.10);
            border-color: #fff;
            transform: translateY(-2px);
        }
        
        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            padding: 18px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }
        .breadcrumb-bar ul { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; }
        .breadcrumb-bar li { color: var(--text-muted); display: flex; align-items: center; gap: 8px; }
        .breadcrumb-bar li::after { content: "/"; color: #c5d0dd; }
        .breadcrumb-bar li:last-child::after { display: none; }
        .breadcrumb-bar li:last-child { color: var(--primary); font-weight: 500; }
        .breadcrumb-bar a:hover { color: var(--accent); }

        /* ===== 板块通用 ===== */
        .section-block { padding: 80px 0; }
        .section-block.alt-bg { background: var(--bg-white); }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(26,75,140,0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 32px;
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-header p { font-size: 15px; color: var(--text-muted); line-height: 1.75; }
        .section-divider { border: 0; height: 1px; background: linear-gradient(to right, transparent, var(--border-light), transparent); margin: 0; }

        /* ===== 登录方式卡片 ===== */
        .method-grid .card-method {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-method:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(26,75,140,0.18);
        }
        .method-img { overflow: hidden; height: 200px; position: relative; }
        .method-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
        .card-method:hover .method-img img { transform: scale(1.05); }
        .method-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 50%, rgba(15,52,96,0.35));
        }
        .method-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
        .method-body .method-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: rgba(26,75,140,0.08);
            color: var(--primary);
        }
        .method-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .method-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; flex: 1; }
        .method-body .method-link {
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .method-body .method-link:hover { color: var(--accent); gap: 10px; }

        /* ===== 登录流程 ===== */
        .step-section { background: linear-gradient(180deg, #f0f4fa 0%, var(--bg-light) 100%); }
        .step-card {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            height: 100%;
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 8px 20px rgba(26,75,140,0.28);
            position: relative;
            z-index: 1;
        }
        .step-card::before {
            content: "";
            position: absolute;
            top: 46px;
            right: 16%;
            width: 68%;
            height: 2px;
            background: radial-gradient(circle, var(--border-light) 20%, transparent 60%);
            z-index: 0;
        }
        .cell:last-child .step-card::before { display: none; }
        .step-card h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
        .step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

        /* ===== 数据统计 ===== */
        .stats-band {
            padding: 60px 0;
            background: var(--primary-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.14;
        }
        .stats-band .grid-container { position: relative; z-index: 1; }
        .stat-item { text-align: center; padding: 20px 10px; }
        .stat-item .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label { font-size: 15px; opacity: 0.85; letter-spacing: 0.5px; }

        /* ===== 内容列表 ===== */
        .content-list-item {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 24px 28px;
            transition: var(--transition);
            margin-bottom: 16px;
        }
        .content-list-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
        .content-list-item .cl-icon {
            flex: 0 0 44px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(26,75,140,0.07);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
        }
        .content-list-item .cl-body { flex: 1; }
        .content-list-item .cl-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            transition: var(--transition);
        }
        .content-list-item:hover .cl-title { color: var(--primary); }
        .content-list-item .cl-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
        .content-list-item .cl-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            background: rgba(26,75,140,0.05);
            color: var(--primary);
            border-radius: 20px;
            padding: 3px 12px;
        }
        .content-list-item .cl-more {
            flex: 0 0 32px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition);
        }
        .content-list-item:hover .cl-more { background: var(--primary); color: #fff; }

        /* ===== FAQ 手风琴 ===== */
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(26,75,140,0.2); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            user-select: none;
        }
        .faq-question i { color: var(--primary); font-size: 14px; transition: transform 0.3s ease; flex: 0 0 auto; }
        .faq-item.open .faq-question i { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px dashed var(--border-light);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-band {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 60px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-band::after {
            content: "";
            position: absolute;
            top: -50px;
            right: -30px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(212,168,67,0.15);
            filter: blur(50px);
        }
        .cta-band .grid-container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
        .cta-content { flex: 1; min-width: 260px; }
        .cta-content h2 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
        .cta-content p { opacity: 0.88; font-size: 15px; }
        .cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #122438;
            color: #9fb0c3;
            padding: 60px 0 0;
            font-size: 14px;
        }
        .site-footer .footer-brand { margin-bottom: 20px; }
        .site-footer .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .site-footer .footer-logo span { color: var(--accent); }
        .site-footer p { line-height: 1.7; color: #8a9db2; max-width: 320px; }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 8px;
        }
        .site-footer h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .site-footer ul li { margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
        .site-footer ul li a:hover { color: var(--accent-light); padding-left: 4px; }
        .site-footer ul li i { color: var(--accent); width: 16px; text-align: center; }
        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
        }
        .footer-bottom p { margin: 0; font-size: 13px; color: #74879b; max-width: none; }
        .footer-bottom a { color: #8fa3b8; }
        .footer-bottom a:hover { color: #fff; }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .header-inner { padding: 0 20px; }
            .page-hero h1 { font-size: 34px; }
            .section-block { padding: 60px 0; }
        }
        @media screen and (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 99;
                gap: 4px;
            }
            .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
            .main-nav a { padding: 12px 16px; text-align: center; }
            .main-nav a.active::after { display: none; }
            .main-nav a.active { background: rgba(26,75,140,0.08); border-radius: 8px; }
            .nav-toggle { display: flex; }
            .page-hero { padding: 70px 0 56px; }
            .page-hero h1 { font-size: 28px; }
            .page-hero p.lead { font-size: 15px; }
            .section-header h2 { font-size: 26px; }
            .section-block { padding: 48px 0; }
            .content-list-item { flex-wrap: wrap; padding: 18px 20px; gap: 14px; }
            .cta-band .grid-container { flex-direction: column; text-align: center; }
            .cta-actions { justify-content: center; }
            .stat-item .stat-num { font-size: 30px; }
            .step-card::before { display: none; }
            .footer-bottom p { text-align: center; }
        }
        @media screen and (max-width: 520px) {
            .header-inner { height: 64px; padding: 0 16px; }
            .logo { font-size: 20px; }
            .main-nav { top: 64px; }
            .page-hero h1 { font-size: 24px; }
            .hero-actions .btn { padding: 10px 20px; font-size: 14px; width: 100%; }
            .section-header h2 { font-size: 22px; }
            .method-body { padding: 20px; }
            .faq-question { font-size: 14px; padding: 16px 18px; }
        }

/* roulang page: article */
:root {
    --primary: #16233c;
    --primary-light: #2a4070;
    --accent: #c9a24b;
    --accent-light: #e8c87a;
    --bg: #f4f6fa;
    --bg-deep: #0f1a30;
    --text: #1e2a3a;
    --text-light: #5a6b7f;
    --border: #e3e8ef;
    --white: #ffffff;
    --radius: 16px;
    --radius-lg: 24px;
    --radius-sm: 10px;
    --shadow: 0 8px 28px rgba(18, 32, 55, .08);
    --shadow-lg: 0 18px 48px rgba(18, 32, 55, .14);
    --transition: .32s cubic-bezier(.22, .68, .35, 1);
    --space: 88px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.logo {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -.5px;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 2px;
}
.logo span { color: var(--accent); font-weight: 700; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    transition: var(--transition);
    letter-spacing: .2px;
}
.main-nav a:hover { color: var(--primary); background: #edf1f7; }
.main-nav a.active {
    color: var(--primary);
    font-weight: 700;
    background: linear-gradient(135deg, #f0f3f8, #e6ebf3);
}
.main-nav a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    transform: translateX(-50%);
}
.nav-toggle { display: none; background: none; border: none; cursor: pointer; width: 44px; height: 44px; border-radius: 12px; padding: 10px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--primary); border-radius: 3px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero banner */
.article-hero {
    position: relative;
    background: var(--bg-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 76px 0 72px;
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(15,26,48,.94) 0%, rgba(15,26,48,.82) 55%, rgba(22,35,60,.65) 100%);
}
.article-hero .container { position: relative; z-index: 2; max-width: 900px; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255,255,255,.58);
    margin-bottom: 22px;
    letter-spacing: .4px;
}
.breadcrumb a { color: rgba(255,255,255,.78); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 11px; }
.article-hero h1 {
    color: #fff;
    font-size: 38px;
    line-height: 1.3;
    font-weight: 800;
    letter-spacing: -.4px;
    margin-bottom: 22px;
    max-width: 760px;
}
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; color: rgba(255,255,255,.68); font-size: 14px; }
.hero-meta .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(201,162,75,.18);
    border: 1px solid rgba(201,162,75,.4);
    color: var(--accent-light);
    padding: 4px 14px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 600;
}
.hero-meta .meta-item { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { color: var(--accent-light); }

/* Article main */
.article-main { padding: 70px 0 30px; }
.article-layout .grid-x { row-gap: 48px; }
.article-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 46px 48px;
    border: 1px solid var(--border);
}
.article-body { font-size: 16.5px; line-height: 1.9; color: #2a3444; }
.article-body p { margin-bottom: 1.35em; }
.article-body h2 { font-size: 24px; font-weight: 700; color: var(--primary); margin: 1.4em 0 .6em; letter-spacing: -.2px; }
.article-body h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin: 1.2em 0 .5em; }
.article-body ul, .article-body ol { margin: 0 0 1.4em 1.6em; }
.article-body li { margin-bottom: .4em; }
.article-body blockquote { border-left: 3px solid var(--accent); background: #f7f4ee; padding: 18px 22px; border-radius: 0 12px 12px 0; color: #4a5568; margin: 1.4em 0; font-style: normal; }
.article-body img { border-radius: var(--radius); margin: 1.4em 0; box-shadow: var(--shadow); }
.article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--accent); }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); }
.article-tags .tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: #f1f4f9;
    color: var(--text-light);
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.not-found-box { text-align: center; padding: 70px 20px; }
.not-found-box i { font-size: 52px; color: var(--accent); margin-bottom: 20px; }
.not-found-box h2 { font-size: 28px; color: var(--primary); margin-bottom: 12px; font-weight: 800; }
.not-found-box p { color: var(--text-light); margin-bottom: 28px; font-size: 15px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: .3px;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(22,35,60,.25); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(22,35,60,.32); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(201,162,75,.3); }
.btn-accent:hover { background: #b8933e; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(201,162,75,.36); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.45); }
.btn-outline:hover { background: rgba(255,255,255,.12); border-color: #fff; transform: translateY(-2px); }
.btn:focus-visible, a:focus-visible { outline: 3px solid rgba(201,162,75,.55); outline-offset: 3px; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 28px; }
.side-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 26px;
    box-shadow: 0 4px 18px rgba(18,32,55,.04);
    transition: var(--transition);
}
.side-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.side-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}
.side-nav { list-style: none; margin: 0; padding: 0; }
.side-nav li { border-bottom: 1px solid #f0f2f6; }
.side-nav li:last-child { border-bottom: none; }
.side-nav a { display: flex; align-items: center; gap: 10px; padding: 12px 0; font-size: 14.5px; color: var(--text-light); font-weight: 500; transition: var(--transition); }
.side-nav a i { color: var(--accent); font-size: 13px; width: 18px; text-align: center; }
.side-nav a:hover { color: var(--primary); padding-left: 6px; }
.side-nav a.active { color: var(--primary); font-weight: 700; }
.side-feature { list-style: none; margin: 0; padding: 0; }
.side-feature li { display: flex; gap: 12px; padding: 10px 0; font-size: 14px; color: var(--text-light); align-items: flex-start; }
.side-feature li i { color: var(--accent); font-size: 15px; margin-top: 3px; width: 20px; text-align: center; }
.contact-line { display: flex; align-items: center; gap: 12px; padding: 10px 0; font-size: 14px; color: var(--text-light); }
.contact-line i { color: var(--accent); font-size: 15px; width: 20px; text-align: center; }
.contact-line a { color: var(--primary); font-weight: 600; }
.contact-line a:hover { color: var(--accent); }
.faq-mini { margin-top: 6px; }
.faq-mini details { border-bottom: 1px solid #f0f2f6; padding: 12px 0; }
.faq-mini details:last-child { border-bottom: none; }
.faq-mini summary { font-size: 14px; font-weight: 600; color: var(--text); cursor: pointer; list-style: none; display: flex; align-items: center; gap: 8px; transition: var(--transition); }
.faq-mini summary::before { content: "\f078"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 10px; color: var(--accent); transition: var(--transition); }
.faq-mini details[open] summary::before { transform: rotate(180deg); }
.faq-mini summary:hover { color: var(--primary); }
.faq-mini p { font-size: 13px; color: var(--text-light); line-height: 1.7; padding: 10px 0 4px 24px; margin: 0; }
.service-badge-box { display: flex; align-items: center; gap: 16px; padding: 18px; background: linear-gradient(135deg, #f7f4ee, #f0f3f8); border-radius: var(--radius-sm); }
.service-badge-box i { font-size: 28px; color: var(--accent); }
.service-badge-box span { font-size: 13px; font-weight: 600; color: var(--primary); line-height: 1.5; }

/* Related section */
.related-section { padding: 64px 0 80px; }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: 1.4px; margin-bottom: 12px; }
.section-label::before { content: ""; width: 22px; height: 2px; background: var(--accent); border-radius: 2px; }
.section-title { font-size: 32px; font-weight: 800; color: var(--primary); letter-spacing: -.6px; margin-bottom: 14px; }
.section-desc { font-size: 15px; color: var(--text-light); max-width: 580px; margin-bottom: 40px; }
.related-grid { row-gap: 28px; }
.related-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px rgba(18,32,55,.05);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(201,162,75,.3); }
.related-card .card-img { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s cubic-bezier(.2, .6, .3, 1); }
.related-card:hover .card-img img { transform: scale(1.06); }
.related-card .card-img::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,26,48,0) 45%, rgba(15,26,48,.38)); }
.related-card .card-body { padding: 26px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.card-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--accent); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 10px; }
.related-card h3 { font-size: 19px; font-weight: 700; color: var(--primary); line-height: 1.4; margin-bottom: 10px; letter-spacing: -.2px; }
.related-card h3 a:hover { color: var(--accent); }
.related-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; }
.card-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); margin-top: 16px; transition: var(--transition); }
.card-link i { font-size: 12px; transition: transform var(--transition); }
.card-link:hover { color: var(--accent); }
.card-link:hover i { transform: translateX(4px); }

/* CTA */
.cta-section { position: relative; padding: 88px 0; background: var(--bg-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, rgba(15,26,48,.95), rgba(22,35,60,.72)); }
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: -.5px; }
.cta-inner h2 span { color: var(--accent-light); }
.cta-inner p { color: rgba(255,255,255,.75); font-size: 16px; line-height: 1.8; margin-bottom: 34px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-note { margin-top: 22px; font-size: 13px; color: rgba(255,255,255,.45); display: flex; align-items: center; justify-content: center; gap: 8px; }
.cta-note i { color: var(--accent-light); }

/* Footer */
.site-footer { background: var(--bg-deep); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.site-footer .grid-x { row-gap: 40px; }
.footer-brand .footer-logo { font-size: 26px; font-weight: 800; color: #fff; letter-spacing: -.4px; }
.footer-brand .footer-logo span { color: var(--accent-light); }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; max-width: 360px; color: rgba(255,255,255,.6); }
.site-footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; letter-spacing: .4px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer ul li { margin-bottom: 10px; font-size: 14px; }
.site-footer ul a { color: rgba(255,255,255,.62); transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.site-footer ul a:hover { color: var(--accent-light); padding-left: 4px; }
.site-footer ul i { width: 18px; color: var(--accent-light); font-size: 13px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 46px; padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.4); }
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--accent-light); }

/* Responsive */
@media (max-width: 1024px) {
    :root { --space: 64px; }
    .article-card { padding: 36px 32px; }
    .article-hero h1 { font-size: 30px; }
    .section-title { font-size: 28px; }
    .sidebar { margin-top: 12px; }
}
@media (max-width: 768px) {
    .header-inner { height: 62px; }
    .main-nav {
        position: fixed;
        top: 62px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: stretch;
        padding: 14px 24px 24px;
        gap: 8px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 24px 40px rgba(18,32,55,.12);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        border-radius: 0 0 18px 18px;
    }
    .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
    .main-nav a { padding: 14px 18px; font-size: 16px; text-align: center; }
    .main-nav a.active::after { display: none; }
    .nav-toggle { display: flex; }
    .article-hero { padding: 58px 0 54px; }
    .article-hero h1 { font-size: 26px; }
    .article-main { padding: 48px 0 20px; }
    .article-card { padding: 28px 22px; border-radius: var(--radius); }
    .article-body { font-size: 15.5px; line-height: 1.85; }
    .section-title { font-size: 24px; }
    .related-section { padding: 44px 0 56px; }
    .cta-section { padding: 60px 0; }
    .cta-inner h2 { font-size: 26px; }
    .cta-actions { flex-direction: column; align-items: center; }
    .btn { width: 100%; max-width: 320px; }
    .site-footer .grid-x > .cell { text-align: center; }
    .footer-brand p { margin-left: auto; margin-right: auto; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-inner { padding: 0 16px; }
    .article-hero h1 { font-size: 22px; }
    .hero-meta { gap: 10px; }
    .article-card { padding: 20px 16px; }
    .section-title { font-size: 21px; }
    .section-desc { font-size: 14px; }
    .related-card .card-body { padding: 20px 18px; }
    .cta-inner h2 { font-size: 22px; }
    .cta-inner p { font-size: 14px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a6b4a;
            --primary-dark: #0f4d33;
            --primary-light: #e8f5ee;
            --accent: #d4a853;
            --accent-dark: #b8893a;
            --bg: #f7f9f8;
            --bg-white: #ffffff;
            --bg-dark: #0e1f1a;
            --text: #1c2a24;
            --text-weak: #6b7a72;
            --border: #e2eae5;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(15, 50, 35, 0.08);
            --shadow-hover: 0 14px 40px rgba(15, 50, 35, 0.15);
            --transition: all 0.3s ease;
            --spacing-section: 90px;
            --max-width: 1200px;
        }

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(26, 107, 74, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 234, 229, 0.7);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            border-bottom-color: transparent;
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }

        .logo {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .logo span {
            color: var(--primary);
            position: relative;
        }

        .logo span::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0.6);
            transform-origin: left;
            transition: var(--transition);
        }

        .logo:hover span::after {
            transform: scaleX(1);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            padding: 8px 4px;
            position: relative;
            letter-spacing: 0.3px;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .main-nav a:hover {
            color: var(--text);
        }

        .main-nav a:hover::after {
            width: 100%;
        }

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

        .main-nav a.active::after {
            width: 100%;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 内页 Banner ===== */
        .page-banner {
            position: relative;
            padding: 160px 0 90px;
            background: linear-gradient(135deg, rgba(5, 32, 22, 0.89) 0%, rgba(12, 66, 44, 0.78) 55%, rgba(26, 107, 74, 0.72) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.22) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -80%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 100px;
            padding: 8px 20px;
            font-size: 13px;
            letter-spacing: 1px;
            color: #d4e8df;
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }

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

        .page-banner h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -1px;
            color: #ffffff;
        }

        .page-banner h1 .highlight {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }

        .page-banner p {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            max-width: 600px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            justify-content: center;
        }

        .btn-primary {
            background: var(--accent);
            color: #1c2a24;
            box-shadow: 0 4px 18px rgba(212, 168, 83, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 168, 83, 0.45);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

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

        .btn-dark:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(15, 77, 51, 0.3);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 24px 0;
            font-size: 14px;
            color: var(--text-weak);
            border-bottom: 1px solid var(--border);
            background: var(--bg-white);
        }

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

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

        .breadcrumb .separator {
            color: #c0ccc4;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== 安全核心板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }

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

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 100px;
            letter-spacing: 1px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

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

        /* ===== 安全能力卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

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

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

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.08);
        }

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

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

        /* ===== 安全防护措施（深色块） ===== */
        .security-showcase {
            background: linear-gradient(135deg, #0e1f1a 0%, #142e24 60%, #1a3d2f 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .security-showcase::before {
            content: "";
            position: absolute;
            top: 20%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 168, 83, 0.18) 0%, transparent 70%);
            border-radius: 50%;
        }

        .security-showcase .section-title {
            color: #fff;
        }

        .security-showcase .section-desc {
            color: rgba(255, 255, 255, 0.75);
        }

        .security-showcase .section-tag {
            background: rgba(212, 168, 83, 0.2);
            color: var(--accent);
        }

        .security-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            position: relative;
            z-index: 2;
        }

        .security-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 30px;
            display: flex;
            gap: 20px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .security-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(212, 168, 83, 0.35);
            transform: perspective(800px) translateY(-3px);
        }

        .security-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: #1c2a24;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .security-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .security-body p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 安全流程 / 步骤 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 40px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            position: relative;
            transition: var(--transition);
        }

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

        .step-item::before {
            counter-increment: step;
            content: "0" counter(step);
            display: block;
            font-size: 42px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 20px;
            transition: var(--transition);
        }

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

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* ===== 安全工具 / 图片卡片 ===== */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        .tool-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .tool-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .tool-card-body {
            padding: 30px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .tool-card-tag {
            display: inline-block;
            align-self: flex-start;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .tool-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .tool-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .tool-card-link {
            margin-top: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
        }

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

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

        /* ===== 数据统计条 ===== */
        .stats-ribbon {
            background: var(--primary-dark);
            padding: 50px 0;
            color: #fff;
        }

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

        .stat-item .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 8px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

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

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

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

        .faq-question {
            padding: 22px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

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

        .faq-answer-inner {
            padding: 0 28px 24px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }

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

        .cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
        }

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

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            line-height: 1.7;
        }

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

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0e1f1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
            font-size: 14px;
        }

        .footer-brand {
            padding-right: 30px;
        }

        .footer-logo {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 16px;
        }

        .footer-logo span {
            color: var(--accent);
        }

        .footer-brand p {
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .site-footer h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .site-footer ul li i {
            margin-right: 8px;
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            margin-top: 50px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

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

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 70px;
            }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }

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

        @media (max-width: 768px) {
            :root {
                --spacing-section: 55px;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                right: 0;
                background: var(--bg-white);
                width: 280px;
                height: calc(100vh - 64px);
                flex-direction: column;
                align-items: flex-start;
                padding: 40px 30px;
                gap: 24px;
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.08);
                transform: translateX(100%);
                transition: transform 0.35s ease;
                border-radius: 0 0 0 var(--radius);
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .main-nav a {
                font-size: 17px;
            }

            .nav-toggle {
                display: flex;
            }

            .page-banner {
                padding: 130px 0 70px;
            }

            .page-banner h1 {
                font-size: 32px;
            }

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

            .section-title {
                font-size: 28px;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px 20px;
            }

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

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

            .tool-grid {
                gap: 24px;
            }

            .tool-card img {
                height: 180px;
            }

            .footer-brand {
                padding-right: 0;
                margin-bottom: 30px;
            }
        }

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

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

            .btn {
                width: 100%;
            }

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

            .page-banner h1 {
                font-size: 27px;
            }

            .feature-card {
                padding: 30px 24px;
            }

            .security-item {
                flex-direction: column;
                padding: 24px;
            }

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

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

/* roulang page: category3 */
:root {
            --primary: #1a5cff;
            --primary-dark: #0c3a8f;
            --primary-light: #eaf1ff;
            --primary-glow: rgba(26, 92, 255, 0.18);
            --accent: #ff6b35;
            --bg-light: #f4f7fc;
            --bg-white: #ffffff;
            --text-strong: #15233c;
            --text-body: #465069;
            --text-weak: #8b94a7;
            --border: #e4eaf2;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 26px;
            --shadow-card: 0 4px 22px rgba(21, 35, 60, 0.07);
            --shadow-hover: 0 14px 38px rgba(21, 35, 60, 0.14);
            --transition: all 0.32s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --header-h: 78px;
            --space-section: 88px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "sans-serif";
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.72;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button {
            font-family: inherit;
        }

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

        /* ---------- 顶部导航 ---------- */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-h);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.5px;
            line-height: 1.2;
            display: inline-flex;
            align-items: center;
        }

        .logo span {
            color: var(--primary);
            position: relative;
        }

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

        .main-nav a {
            padding: 9px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 24px;
            position: relative;
            transition: var(--transition);
            line-height: 1.4;
        }

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

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
            box-shadow: inset 0 0 0 1px rgba(26, 92, 255, 0.12);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            border-radius: 10px;
            transition: var(--transition);
        }

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

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-strong);
            margin: 4px 0;
            border-radius: 3px;
            transition: var(--transition);
        }

        /* ---------- 页面Banner ---------- */
        .page-banner {
            background: linear-gradient(135deg, #0d1730 0%, #16294d 48%, #1a5cff 100%);
            color: #fff;
            padding: 96px 0 88px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("/assets/images/backpic/back-1.png") center/cover no-repeat;
            opacity: 0.22;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.22) 0%, transparent 70%);
            border-radius: 50%;
        }

        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 840px;
            margin: 0 auto;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 14px;
            letter-spacing: 0.4px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }

        .banner-badge i {
            color: #ffd166;
        }

        .page-banner h1 {
            font-size: 46px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #fff;
        }

        .page-banner h1 span {
            color: #ffd166;
        }

        .page-banner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            margin: 0 auto 0;
            line-height: 1.8;
        }

        .banner-meta {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .banner-meta-item {
            text-align: center;
            padding: 10px 8px;
        }

        .banner-meta-item strong {
            display: block;
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .banner-meta-item span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.66);
            letter-spacing: 0.5px;
        }

        /* ---------- 介绍板块 ---------- */
        .section-block {
            padding: var(--space-section) 0;
        }

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

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

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .intro-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .intro-image img {
            width: 100%;
            height: 440px;
            object-fit: cover;
        }

        .intro-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 23, 48, 0.25) 0%, transparent 40%);
            pointer-events: none;
        }

        .intro-badge {
            position: absolute;
            bottom: 24px;
            left: 24px;
            background: rgba(255, 255, 255, 0.94);
            border-radius: 14px;
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
            z-index: 2;
            backdrop-filter: blur(8px);
        }

        .intro-badge i {
            font-size: 26px;
            color: var(--primary);
        }

        .intro-badge strong {
            display: block;
            font-size: 16px;
            color: var(--text-strong);
            line-height: 1.3;
        }

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

        .intro-content .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 24px;
            margin-bottom: 16px;
        }

        .intro-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-strong);
            line-height: 1.4;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
        }

        .intro-content p {
            font-size: 16px;
            color: var(--text-body);
            margin-bottom: 14px;
            line-height: 1.8;
        }

        .feature-list {
            list-style: none;
            margin: 26px 0 0;
            padding: 0;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 9px 0;
            font-size: 15px;
            color: var(--text-body);
        }

        .feature-list li i {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
        }

        /* ---------- 服务分类卡片 ---------- */
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 24px;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: -0.5px;
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            max-width: 660px;
            margin: 0 auto;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 38px 30px 34px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), #6ea8ff);
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .service-card .icon-wrap {
            width: 74px;
            height: 74px;
            border-radius: 22px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 22px;
            transition: var(--transition);
        }

        .service-card:hover .icon-wrap {
            background: var(--primary);
        }

        .service-card .icon-wrap i {
            font-size: 28px;
            color: var(--primary);
            transition: var(--transition);
        }

        .service-card:hover .icon-wrap i {
            color: #fff;
        }

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

        .service-card p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .service-card .tag-row {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .service-card .tag-row .mini-tag {
            font-size: 12px;
            background: var(--bg-light);
            color: var(--text-body);
            padding: 4px 12px;
            border-radius: 16px;
        }

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

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

        .process-item {
            text-align: center;
            position: relative;
            padding: 24px 16px 10px;
        }

        .process-item .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px var(--primary-glow);
            position: relative;
            z-index: 2;
        }

        .process-item::before {
            content: "";
            position: absolute;
            top: 52px;
            left: calc(50% + 36px);
            width: calc(100% - 72px);
            height: 2px;
            background: linear-gradient(90deg, var(--border), var(--primary-light));
        }

        .process-item:last-child::before {
            display: none;
        }

        .process-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ---------- 服务承诺 ---------- */
        .stats-section {
            background: linear-gradient(135deg, #0d1730, #16294d 60%, #1a3f7a);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("/assets/images/backpic/back-2.png") center/cover no-repeat;
            opacity: 0.12;
        }

        .stats-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stats-item {
            text-align: center;
            color: #fff;
            padding: 12px 8px;
        }

        .stats-item i {
            font-size: 30px;
            color: #ffd166;
            margin-bottom: 14px;
            display: block;
        }

        .stats-item strong {
            display: block;
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .stats-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
            display: block;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.08);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 8px 28px rgba(26, 92, 255, 0.1);
        }

        .faq-question {
            padding: 22px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-strong);
            font-size: 16px;
            user-select: none;
            gap: 20px;
        }

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-question .faq-icon i {
            font-size: 13px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
        }

        .faq-item.open .faq-icon i {
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 24px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            background: linear-gradient(135deg, #0d1730, #1a4f9e);
            padding: 72px 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("/assets/images/backpic/back-3.png") center/cover no-repeat;
            opacity: 0.15;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

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

        .btn-custom {
            display: inline-block;
            background: #fff;
            color: var(--primary);
            padding: 14px 38px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(255, 255, 255, 0.3);
            color: var(--primary-dark);
        }

        .btn-outline {
            display: inline-block;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            margin-left: 14px;
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ---------- 联系信息 ---------- */
        .contact-section {
            padding: 72px 0;
            background: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .contact-item {
            text-align: center;
            padding: 40px 24px 36px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: var(--transition);
            background: var(--bg-white);
        }

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

        .contact-item i {
            font-size: 30px;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }

        .contact-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .contact-item p {
            color: var(--text-weak);
            font-size: 15px;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: #0d1730;
            color: rgba(255, 255, 255, 0.68);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .site-footer .footer-brand {
            margin-bottom: 20px;
        }

        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .footer-brand .footer-logo span {
            color: #6ea8ff;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            margin-top: 14px;
            max-width: 340px;
            line-height: 1.8;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .site-footer h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            border-radius: 2px;
            background: #6ea8ff;
        }

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

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.58);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .site-footer ul li i {
            margin-right: 10px;
            color: #6ea8ff;
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            margin-top: 30px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.42);
            transition: var(--transition);
        }

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

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

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 44px;
            }

            .process-item::before {
                display: none;
            }

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 28px;
            }

            .intro-grid {
                gap: 40px;
            }

            .page-banner h1 {
                font-size: 38px;
            }
        }

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

            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px 24px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
                border-bottom: 1px solid var(--border);
                gap: 8px;
            }

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

            .main-nav a {
                padding: 14px 16px;
                width: 100%;
                text-align: center;
                border-radius: 10px;
                font-size: 15px;
            }

            .nav-toggle {
                display: block;
            }

            .page-banner {
                padding: 68px 0 60px;
            }

            .page-banner h1 {
                font-size: 32px;
            }

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

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

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

            .intro-image img {
                height: 300px;
            }

            .service-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .process-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .contact-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

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

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

            .banner-meta {
                gap: 20px;
            }

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

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

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

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

            .header-inner {
                padding: 0 16px;
            }

            .logo {
                font-size: 22px;
            }

            .page-banner {
                padding: 48px 0 44px;
            }

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

            .page-banner p {
                font-size: 15px;
            }

            .section-header h2 {
                font-size: 24px;
            }

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

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

            .btn-outline {
                margin-left: 0;
                margin-top: 14px;
            }

            .banner-meta {
                flex-direction: column;
                gap: 12px;
                margin-top: 24px;
            }

            .banner-meta-item {
                padding: 6px;
            }

            .intro-image img {
                height: 240px;
            }

            .intro-badge {
                bottom: 14px;
                left: 14px;
                padding: 10px 14px;
            }

            .intro-badge strong {
                font-size: 14px;
            }

            .intro-badge span {
                font-size: 12px;
            }

            .contact-item {
                padding: 28px 16px;
            }
        }