/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-light: #2c5f8a;
            --primary-dark: #0e2439;
            --accent: #c8a96e;
            --accent-hover: #b89456;
            --bg-main: #f7f6f3;
            --bg-white: #ffffff;
            --bg-dark: #16283a;
            --text-main: #2d2d2d;
            --text-light: #6b7280;
            --border-soft: #e8e4dd;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 10px 32px rgba(26, 58, 92, 0.1);
            --shadow-lg: 0 16px 48px rgba(26, 58, 92, 0.16);
            --transition: all 0.3s ease;
            --space-section: 88px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-main);
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        ul, ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1, h2, h3, h4, h5 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary-dark);
        }
        p {
            margin: 0;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(232, 228, 221, 0.8);
            box-shadow: 0 2px 20px rgba(26, 58, 92, 0.04);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-menu > li > a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            transition: var(--transition);
        }
        .nav-menu > li > a:hover {
            background: rgba(200, 169, 110, 0.12);
            color: var(--primary);
        }
        .nav-menu > li > a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 40px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(200, 169, 110, 0.35);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(200, 169, 110, 0.45);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            border: 1px solid var(--border-soft);
            background: #fff;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(135deg, rgba(14, 36, 57, 0.92), rgba(26, 58, 92, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 120px 0 140px;
            overflow: hidden;
        }
        .hero__inner {
            max-width: 860px;
        }
        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(6px);
            margin-bottom: 28px;
        }
        .hero h1 {
            font-size: 52px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }
        .hero__sub {
            font-size: 20px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            max-width: 660px;
        }
        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 24px rgba(200, 169, 110, 0.4);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(200, 169, 110, 0.5);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        .hero__wave {
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            line-height: 0;
        }
        .hero__wave svg {
            display: block;
            width: 100%;
            height: 80px;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 17px;
            color: var(--text-light);
            max-width: 680px;
            line-height: 1.8;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-white);
        }
        .feature-card {
            padding: 36px 30px;
            border-radius: var(--radius-lg);
            background: #fafaf8;
            border: 1px solid var(--border-soft);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            background: linear-gradient(135deg, rgba(26, 58, 92, 0.08), rgba(200, 169, 110, 0.15));
            color: var(--primary);
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 19px;
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Categories ===== */
        .cat-section {
            background: var(--bg-main);
        }
        .cat-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border-soft);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .cat-card__media {
            position: relative;
            height: 220px;
            overflow: hidden;
        }
        .cat-card__media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .cat-card:hover .cat-card__media img {
            transform: scale(1.06);
        }
        .cat-card__media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 36, 57, 0.5), transparent 60%);
        }
        .cat-card__tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 6px 16px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
        }
        .cat-card__body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .cat-card__body h3 {
            font-size: 21px;
            margin-bottom: 12px;
        }
        .cat-card__body p {
            font-size: 15px;
            color: var(--text-light);
            flex: 1;
            line-height: 1.7;
        }
        .cat-card__link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 20px;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
        }
        .cat-card__link:hover {
            color: var(--accent-hover);
            gap: 14px;
        }

        /* ===== News 列表 ===== */
        .news-section {
            background: var(--bg-white);
        }
        .news-card {
            background: #fafaf8;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .news-card__cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--accent);
            margin-bottom: 12px;
            text-transform: uppercase;
        }
        .news-card h3 {
            font-size: 18px;
            line-height: 1.5;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card__meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-soft);
            padding-top: 16px;
        }
        .news-empty {
            text-align: center;
            padding: 60px 24px;
            color: var(--text-light);
            font-size: 16px;
            background: #fafaf8;
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-soft);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg-main);
        }
        .step-item {
            position: relative;
            text-align: center;
            padding: 36px 24px;
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            background: var(--primary);
            color: #fff;
            margin: 0 auto 20px;
            box-shadow: 0 6px 20px rgba(26, 58, 92, 0.25);
            position: relative;
            z-index: 1;
        }
        .step-item::before {
            content: '';
            position: absolute;
            top: 64px;
            left: -50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--border-soft), var(--accent));
            z-index: 0;
        }
        .step-item:first-child::before {
            display: none;
        }
        .step-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            max-width: 240px;
            margin: 0 auto;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-dark);
            color: #fff;
            padding: 70px 0;
        }
        .stat-item {
            text-align: center;
            padding: 24px;
        }
        .stat-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Testimonial ===== */
        .quote-section {
            background: var(--bg-white);
        }
        .quote-card {
            background: #fafaf8;
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-soft);
            position: relative;
        }
        .quote-card__text {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-main);
            margin-bottom: 24px;
            font-style: italic;
        }
        .quote-card__author {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .quote-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .quote-card__author-info {
            font-size: 14px;
        }
        .quote-card__author-info strong {
            display: block;
            font-size: 15px;
            color: var(--primary);
        }
        .quote-card__author-info span {
            color: var(--text-light);
            font-size: 13px;
        }
        .quote-icon {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 40px;
            color: rgba(200, 169, 110, 0.25);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-main);
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-item summary {
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--primary-dark);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 26px;
            font-weight: 400;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 88px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(200, 169, 110, 0.15);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -5%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            color: #fff;
            font-size: 36px;
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 17px;
            margin-bottom: 32px;
        }
        .cta-subscribe {
            display: flex;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto;
        }
        .cta-subscribe input {
            flex: 1;
            padding: 14px 20px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 15px;
            outline: none;
            transition: var(--transition);
        }
        .cta-subscribe input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .cta-subscribe input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.18);
        }
        .cta-subscribe .btn-primary {
            white-space: nowrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #101f2e;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 30px;
            font-size: 14px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand i {
            color: var(--accent);
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 24px;
        }
        .footer-links {
            display: grid;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 64px;
            }
            .hero h1 {
                font-size: 40px;
            }
            .section-title {
                font-size: 30px;
            }
            .step-item::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-soft);
                box-shadow: 0 20px 40px rgba(26, 58, 92, 0.1);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: var(--transition);
                border-radius: 0 0 20px 20px;
            }
            .nav-menu.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-menu > li > a {
                padding: 14px 16px;
                border-radius: 12px;
                width: 100%;
            }
            .nav-cta {
                display: none;
            }
            .hero {
                padding: 80px 0 100px;
            }
            .hero h1 {
                font-size: 32px;
                line-height: 1.35;
            }
            .hero__sub {
                font-size: 17px;
            }
            .cta-subscribe {
                flex-direction: column;
            }
            .cta-subscribe .btn-primary {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .nav-logo {
                font-size: 16px;
            }
            .nav-logo i {
                font-size: 20px;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero__sub {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero__actions {
                flex-direction: column;
            }
            .step-item {
                padding: 24px 12px;
            }
            .stat-number {
                font-size: 32px;
            }
            .quote-card {
                padding: 28px 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        /* Foundation 修正 */
        .grid-container {
            max-width: 1200px;
            padding: 0 24px;
        }
        @media (max-width: 520px) {
            .grid-container {
                padding: 0 18px;
            }
        }
        .cell {
            min-width: 0;
        }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #FF6B35;
            --primary-dark: #E85D2A;
            --primary-light: #FFF0EA;
            --secondary: #4ECDC4;
            --dark: #1A1A2E;
            --dark-2: #2D3436;
            --text: #2D3436;
            --text-light: #7B8D93;
            --border: #EAECEF;
            --bg-light: #F7F8FC;
            --bg-white: #FFFFFF;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 36px rgba(255, 107, 53, 0.15);
            --transition: all 0.3s ease;
            --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
        }

        /* ============ 基础重置 ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg-white);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        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;
            border: none;
            outline: none;
            background: none;
        }
        i,
        svg {
            vertical-align: middle;
        }

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

        /* ============ 顶部导航 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(26, 26, 46, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 24px;
        }
        .nav-logo span {
            background: linear-gradient(135deg, #FF6B35, #FFA06B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0;
        }
        .nav-menu li {
            margin: 0;
        }
        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 50px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }
        .nav-menu a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu a.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 20px rgba(255, 107, 53, 0.35);
        }
        .nav-menu a i {
            font-size: 14px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 18px rgba(255, 107, 53, 0.3);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(255, 107, 53, 0.45);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* ============ 页面 Hero ============ */
        .page-hero {
            position: relative;
            padding: 160px 0 100px;
            background: linear-gradient(rgba(26, 26, 46, 0.75), rgba(26, 26, 46, 0.6)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(transparent, var(--bg-white));
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .page-hero .hero-badge i {
            color: var(--primary);
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 1px;
            text-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        .page-hero h1 span {
            color: var(--primary);
        }
        .page-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-primary,
        .hero-actions .btn-outline {
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .hero-actions .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(255, 107, 53, 0.5);
        }
        .hero-actions .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .hero-actions .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ============ 通用板块 ============ */
        .section {
            padding: 90px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }
        .section-head .section-tag {
            display: inline-block;
            padding: 6px 18px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ============ 流程板块 ============ */
        .process-section {
            padding-bottom: 80px;
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .process-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .process-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .process-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .process-card:hover::before {
            opacity: 1;
        }
        .process-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            margin: 0 auto 20px;
            transition: var(--transition);
        }
        .process-card:hover .process-number {
            background: var(--primary);
            color: #fff;
        }
        .process-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .process-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ============ 注册方式卡片 ============ */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .method-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
        }
        .method-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .method-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .method-card:hover .card-img img {
            transform: scale(1.05);
        }
        .method-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 40%, rgba(0, 0, 0, 0.4));
        }
        .method-card .card-body {
            padding: 28px;
        }
        .method-card .card-body .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .method-card .card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .method-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .method-card .card-body .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .method-card .card-body .card-link:hover {
            gap: 10px;
        }

        /* ============ 数据统计 ============ */
        .stats-section {
            background: linear-gradient(135deg, var(--dark) 0%, #2E2E4A 100%);
            position: relative;
            color: #fff;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.15);
            filter: blur(60px);
        }
        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(78, 205, 196, 0.12);
            filter: blur(50px);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .stat-item {
            padding: 30px 20px;
        }
        .stat-item .stat-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .stat-item .stat-num {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.2;
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.8));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 6px;
        }

        /* ============ 注意事项 ============ */
        .notes-section {
            background: var(--bg-light);
        }
        .notes-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .notes-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }
        .notes-content .intro {
            color: var(--text-light);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .notes-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .notes-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg-white);
            padding: 18px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .notes-list li:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }
        .notes-list li i {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }
        .notes-list li .note-text h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .notes-list li .note-text p {
            font-size: 14px;
            color: var(--text-light);
        }
        .notes-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
        }
        .notes-img img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(255, 107, 53, 0.1);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            background: transparent;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 24px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 20%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 38px;
            background: #fff;
            color: var(--primary);
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
            position: relative;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand i {
            color: var(--primary);
            font-size: 26px;
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .site-footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            transition: var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .site-footer .footer-links a i {
            font-size: 10px;
            color: var(--primary);
        }
        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            margin-top: 50px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ============ 响应式 ============ */
        @media screen and (max-width: 1024px) {
            .page-hero {
                padding: 130px 0 80px;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .methods-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .notes-wrapper {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media screen and (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--dark);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px;
                gap: 6px;
                border-radius: 0 0 16px 16px;
                transform: translateY(-150%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-menu a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .page-hero {
                padding: 110px 0 70px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .section {
                padding: 60px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .methods-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 30px;
            }
            .notes-list li {
                padding: 14px 16px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section .btn-white {
                padding: 12px 30px;
                font-size: 14px;
            }
            .site-footer {
                padding: 50px 0 0;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 100px 0 60px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .process-card {
                padding: 24px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 16px 10px;
            }
            .stat-item .stat-icon {
                font-size: 26px;
            }
            .stat-item .stat-num {
                font-size: 26px;
            }
            .stat-item .stat-label {
                font-size: 13px;
            }
            .notes-img img {
                height: 280px;
            }
        }

/* roulang page: article */
:root {
            --primary: #5b6ef5;
            --primary-dark: #4452d8;
            --secondary: #f0a93e;
            --accent: #12b981;
            --bg-body: #f7f8fc;
            --bg-white: #ffffff;
            --bg-soft: #edf0ff;
            --bg-deep: #141b3d;
            --text-main: #1e2437;
            --text-weak: #6f768b;
            --border: #e6e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-xs: 0 2px 8px rgba(20, 27, 61, .05);
            --shadow-md: 0 10px 30px rgba(20, 27, 61, .08);
            --shadow-lg: 0 22px 56px rgba(20, 27, 61, .12);
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 32px;
            --space-lg: 56px;
            --space-xl: 88px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: none;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input,
        textarea {
            font-family: inherit;
        }

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

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

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(20, 27, 61, .05);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 16px;
        }

        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: .3px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-logo i {
            font-size: 24px;
            color: var(--primary);
        }

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

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

        .nav-menu li {
            margin: 0;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 18px;
            border-radius: 999px;
            color: var(--text-main);
            font-size: 14.5px;
            font-weight: 500;
            transition: background .25s, color .25s, box-shadow .25s;
        }

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

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 5px 16px rgba(91, 110, 245, .32);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 999px;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            box-shadow: 0 5px 18px rgba(68, 82, 216, .32);
            transition: transform .25s, box-shadow .25s;
            border: none;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(68, 82, 216, .38);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 8px;
            border-radius: var(--radius-sm);
            line-height: 1;
        }

        .nav-toggle:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 88px 0 74px;
            background: linear-gradient(135deg, rgba(20, 27, 61, .92) 0%, rgba(68, 82, 216, .82) 55%, rgba(91, 110, 245, .72) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 255, 255, .14) 0%, transparent 68%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 340px;
            height: 340px;
            background: radial-gradient(circle, rgba(240, 169, 62, .18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .75);
            transition: color .2s;
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb i {
            font-size: 12px;
            opacity: .65;
        }

        .post-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(240, 169, 62, .22);
            border: 1px solid rgba(240, 169, 62, .45);
            color: var(--secondary);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: .4px;
        }

        .article-hero h1 {
            font-size: clamp(28px, 4.6vw, 44px);
            font-weight: 800;
            line-height: 1.35;
            max-width: 900px;
            margin: 0 auto 22px;
            color: #fff;
            text-shadow: 0 2px 18px rgba(0, 0, 0, .22);
        }

        .post-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, .82);
        }

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

        .post-meta i {
            color: rgba(255, 255, 255, .6);
        }

        /* ===== Post Content ===== */
        .post-section {
            padding: 64px 0 70px;
        }

        .post-main-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .post-body {
            padding: 48px 52px;
        }

        .article-body {
            font-size: 16.5px;
            line-height: 1.95;
            color: #333a4d;
        }

        .article-body p {
            margin-bottom: 24px;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-main);
            margin: 44px 0 18px;
            padding-left: 15px;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text-main);
            margin: 34px 0 14px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 24px 0;
            padding-left: 26px;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
        }

        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 24px;
            background: var(--bg-soft);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: #444b63;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: var(--shadow-md);
        }

        .article-body a {
            font-weight: 600;
            border-bottom: 1px solid rgba(91, 110, 245, .4);
            padding-bottom: 1px;
        }

        .post-footer-info {
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
        }

        .post-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .post-tags .tag-label {
            font-size: 14px;
            color: var(--text-weak);
        }

        .post-tags a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--bg-soft);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            transition: background .2s, color .2s;
        }

        .post-tags a:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 70px 30px;
        }

        .not-found-box i {
            font-size: 56px;
            color: var(--secondary);
            margin-bottom: 18px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .not-found-box p {
            color: var(--text-weak);
            margin-bottom: 26px;
            font-size: 16px;
        }

        .not-found-box .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            box-shadow: 0 5px 18px rgba(91, 110, 245, .3);
            transition: transform .25s, box-shadow .25s, background .25s;
            border: none;
        }

        .not-found-box .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(91, 110, 245, .4);
            color: #fff;
        }

        /* ===== Sidebar ===== */
        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border);
            margin-bottom: 24px;
        }

        .widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .widget-title::after {
            content: '';
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 2px;
        }

        .widget-title i {
            color: var(--primary);
        }

        .widget-banner {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            min-height: 150px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 26px 20px;
            background: linear-gradient(135deg, rgba(20, 27, 61, .88), rgba(68, 82, 216, .76)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            color: #fff;
            margin-bottom: 20px;
        }

        .widget-banner h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .widget-banner p {
            font-size: 13.5px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 16px;
        }

        .widget-banner a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            transition: transform .2s, box-shadow .2s;
        }

        .widget-banner a:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, .2);
            color: var(--primary-dark);
        }

        .quick-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .quick-links li {
            margin: 0;
            border-bottom: 1px dashed var(--border);
        }

        .quick-links li:last-child {
            border-bottom: none;
        }

        .quick-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 13px 4px;
            color: var(--text-main);
            font-size: 14.5px;
            font-weight: 500;
            transition: color .2s, padding-left .25s;
        }

        .quick-links a i {
            color: var(--primary);
            font-size: 13px;
            transition: transform .25s;
        }

        .quick-links a:hover {
            color: var(--primary);
            padding-left: 10px;
        }

        .quick-links a:hover i {
            transform: translateX(4px);
        }

        .help-card {
            background: linear-gradient(135deg, rgba(240, 169, 62, .12), rgba(18, 185, 129, .08));
            border: 1px solid rgba(240, 169, 62, .3);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .help-card i {
            font-size: 24px;
            color: var(--secondary);
            margin-top: 2px;
        }

        .help-card h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .help-card p {
            font-size: 13.5px;
            color: var(--text-weak);
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .help-card a {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
        }

        /* ===== Related Topic Cards ===== */
        .related-section {
            background: var(--bg-white);
            padding: var(--space-xl) 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--bg-soft);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .5px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3.4vw, 36px);
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto;
        }

        .topic-card {
            height: 100%;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            transition: transform .3s, box-shadow .3s, border-color .3s;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(91, 110, 245, .4);
        }

        .topic-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }

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

        .topic-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .topic-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .topic-card-body .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            transition: gap .25s;
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-xl) 0;
            background: var(--bg-body);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            transition: box-shadow .3s, border-color .3s;
        }

        .faq-item.active {
            border-color: rgba(91, 110, 245, .4);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            transition: color .2s;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform .3s;
            font-size: 15px;
            flex-shrink: 0;
        }

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

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

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.9;
            border-top: 1px solid var(--border);
            margin: 0 24px;
            padding: 16px 0 22px;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: var(--space-xl) 0;
            background: linear-gradient(135deg, rgba(20, 27, 61, .92), rgba(68, 82, 216, .85)),
                url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 220px;
            background: radial-gradient(ellipse, rgba(255, 255, 255, .12) 0%, transparent 70%);
            border-radius: 50%;
        }

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

        .cta-section h2 {
            font-size: clamp(26px, 3.6vw, 38px);
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            background: #fff;
            color: var(--primary);
            padding: 14px 34px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(0, 0, 0, .18);
            transition: transform .25s, box-shadow .25s;
            border: none;
        }

        .btn-light:hover {
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, .24);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            border: 2px solid rgba(255, 255, 255, .75);
            color: #fff;
            padding: 12px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: background .25s, transform .25s, border-color .25s;
            background: transparent;
            margin-left: 12px;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 30px;
            font-size: 14px;
        }

        .site-footer .grid-container {
            max-width: 1200px;
        }

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

        .footer-brand i {
            color: var(--secondary);
            font-size: 22px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, .65);
            line-height: 1.8;
            margin-bottom: 22px;
            max-width: 360px;
            font-size: 14px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            color: rgba(255, 255, 255, .75);
            font-size: 16px;
            transition: background .25s, transform .25s, color .25s;
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .site-footer h4[style] {
            font-size: 16px !important;
            font-weight: 700 !important;
            color: #fff !important;
            margin-bottom: 22px !important;
            letter-spacing: .5px;
        }

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

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            transition: color .2s, padding-left .25s;
        }

        .footer-links a i {
            font-size: 11px;
            color: rgba(255, 255, 255, .35);
            transition: color .2s;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }

        .footer-links a:hover i {
            color: var(--secondary);
        }

        .footer-bottom {
            margin-top: 56px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .1);
            display: flex;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, .45);
            font-size: 13px;
        }

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

            .post-body {
                padding: 38px 34px;
            }

            .nav-menu a {
                padding: 8px 13px;
                font-size: 13.5px;
            }
        }

        @media screen and (max-width: 768px) {
            .site-header {
                position: sticky;
            }

            .nav-wrap {
                height: 64px;
            }

            .nav-logo {
                font-size: 15.5px;
            }

            .nav-logo i {
                font-size: 20px;
            }

            .nav-menu {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 20px 18px;
                box-shadow: 0 16px 30px rgba(20, 27, 61, .1);
                border-bottom: 1px solid var(--border);
                display: none;
                border-radius: 0;
                margin: 0;
            }

            .nav-menu.open {
                display: flex;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
            }

            .nav-menu li {
                width: 100%;
            }

            .nav-menu a {
                display: flex;
                width: 100%;
                padding: 13px 12px;
                border-radius: var(--radius-sm);
                font-size: 15px;
                justify-content: flex-start;
            }

            .nav-menu a.active {
                border-radius: var(--radius-sm);
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .article-hero {
                padding: 60px 0 52px;
            }

            .breadcrumb {
                margin-bottom: 18px;
                font-size: 13px;
            }

            .post-meta {
                gap: 14px;
            }

            .post-section {
                padding: 40px 0;
            }

            .post-body {
                padding: 30px 22px;
            }

            .article-body {
                font-size: 15.5px;
            }

            .post-footer-info {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }

            .related-section,
            .faq-section,
            .cta-section {
                padding: var(--space-lg) 0;
            }

            .cta-section p {
                font-size: 15.5px;
            }

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

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

        @media screen and (max-width: 520px) {
            :root {
                --space-lg: 44px;
                --space-xl: 56px;
            }

            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .article-hero h1 {
                font-size: 25px;
            }

            .post-meta {
                flex-direction: column;
                gap: 10px;
                align-items: center;
            }

            .post-body {
                padding: 24px 16px;
            }

            .article-body h2 {
                font-size: 21px;
                margin-top: 32px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .sidebar-widget {
                padding: 20px 18px;
            }

            .section-head {
                margin-bottom: 34px;
            }

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

            .faq-question {
                padding: 16px 18px;
                font-size: 14.5px;
            }

            .faq-answer {
                margin: 0 18px;
                font-size: 14px;
            }

            .footer-brand {
                font-size: 16px;
            }

            .not-found-box {
                padding: 40px 16px;
            }
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --bg: #f8fafc;
            --bg-alt: #eef2ff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --white: #ffffff;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
            --transition: all .3s ease;
        }

        /* ========== Reset / Base ========== */
        * {
            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: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(79, 70, 229, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container,
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 12px rgba(15, 23, 42, 0.05);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: .5px;
        }
        .nav-logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-menu a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .nav-menu a:hover {
            color: var(--primary);
            background: var(--bg-alt);
        }
        .nav-menu a.active {
            color: var(--primary);
            background: var(--bg-alt);
            font-weight: 700;
            box-shadow: inset 0 0 0 1px rgba(79, 70, 229, 0.12);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--text);
            padding: 8px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 100px 0 100px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(79, 70, 229, 0.82) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 70px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 70' preserveAspectRatio='none'%3E%3Cpath d='M0,35 C300,70 600,0 1200,35 L1200,70 L0,70 Z' fill='%23f8fafc'/%3E%3C/svg%3E") center/cover no-repeat;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
        }
        .page-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-hero .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .page-hero .breadcrumb i {
            font-size: 10px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 14px;
            color: #fff;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            margin-bottom: 22px;
            letter-spacing: .5px;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .page-hero .hero-sub {
            font-size: 18px;
            max-width: 680px;
            margin: 0 auto 36px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(79, 70, 229, 0.4);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 80px 0;
        }
        .section-soft {
            background: var(--bg-alt);
        }
        .section-head {
            max-width: 760px;
            margin: 0 auto 50px;
            text-align: center;
        }
        .section-tag {
            display: inline-block;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== 核心安全服务卡片 ========== */
        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 26px 30px;
            text-align: center;
            height: 100%;
            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), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 20px;
            font-size: 28px;
            color: #fff;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
        }
        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 流程步骤 ========== */
        .process-step {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 26px;
            height: 100%;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-num {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            border-radius: 14px;
            margin-bottom: 18px;
            box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 常见登录问题卡片 ========== */
        .problem-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .problem-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .problem-thumb {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .problem-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.15), transparent 55%);
        }
        .problem-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .problem-card:hover .problem-thumb img {
            transform: scale(1.06);
        }
        .problem-body {
            padding: 26px 26px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .problem-tag {
            align-self: flex-start;
            background: rgba(245, 158, 11, 0.12);
            color: #b45309;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 100px;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .problem-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
            line-height: 1.4;
        }
        .problem-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 0;
        }
        .problem-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            margin-top: 18px;
            transition: var(--transition);
        }
        .problem-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ========== 数据统计 ========== */
        .stats-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: rgba(79, 70, 229, 0.25);
            border-radius: 50%;
            filter: blur(60px);
        }
        .stats-section .section-head h2 {
            color: #fff;
        }
        .stats-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .stats-section .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent-light);
        }
        .stat-item {
            text-align: center;
            padding: 20px 10px;
        }
        .stat-num {
            font-size: 52px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: 1px;
        }
        .stat-label {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 10px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.open {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            background: var(--white);
            transition: var(--transition);
            border-radius: var(--radius-sm);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
            font-size: 18px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-answer-inner p {
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 76px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            filter: blur(40px);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: rgba(245, 158, 11, 0.2);
            border-radius: 50%;
            filter: blur(50px);
        }
        .cta-section .grid-container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .cta-section p {
            font-size: 17px;
            opacity: .92;
            max-width: 640px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 0;
            font-size: 15px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .footer-brand i {
            color: var(--accent);
            font-size: 28px;
        }
        .footer-desc {
            line-height: 1.8;
            margin-bottom: 22px;
            max-width: 360px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 12px;
            color: rgba(255, 255, 255, 0.8);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-links a i {
            font-size: 11px;
            color: var(--accent);
        }
        .footer-bottom {
            margin-top: 52px;
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom span {
            line-height: 1.6;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-hero {
                padding: 80px 0 90px;
            }
            .page-hero h1 {
                font-size: 36px;
            }
            .section {
                padding: 66px 0;
            }
            .section-head h2 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 18px 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
                transform: translateY(-130%);
                transition: transform .35s ease;
                border-radius: 0 0 20px 20px;
                margin: 0;
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-menu a {
                justify-content: center;
                padding: 12px 18px;
                border-radius: 14px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                display: none;
            }
            .nav-logo span {
                font-size: 17px;
            }
            .page-hero {
                padding: 64px 0 76px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-sub {
                font-size: 16px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 15px;
            }
            .stat-num {
                font-size: 42px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .cta-section h2 {
                font-size: 27px;
            }
        }
        @media (max-width: 520px) {
            .page-hero {
                padding: 52px 0 66px;
            }
            .page-hero h1 {
                font-size: 25px;
                letter-spacing: .3px;
            }
            .page-hero .hero-sub {
                font-size: 15px;
                line-height: 1.7;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding: 48px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 23px;
            }
            .service-card {
                padding: 28px 20px 24px;
            }
            .process-step {
                padding: 26px 20px;
            }
            .problem-thumb {
                height: 170px;
            }
            .problem-body {
                padding: 22px 20px;
            }
            .faq-question {
                padding: 17px 18px;
                font-size: 15px;
            }
            .faq-answer-inner {
                padding: 0 18px 20px;
                font-size: 14px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 23px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .stat-num {
                font-size: 38px;
            }
            .footer-bottom {
                font-size: 13px;
            }
        }