/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f2b4a;
            --primary-light: #1a3f66;
            --primary-dark: #081b2e;
            --accent: #c9a84c;
            --accent-light: #dfc16a;
            --accent-dark: #a88a32;
            --bg: #f7f8fa;
            --bg-alt: #eef0f4;
            --bg-dark: #0a1a2b;
            --text: #1a202c;
            --text-light: #4a5568;
            --text-muted: #8a95a5;
            --border: #e2e6ed;
            --border-light: #f0f2f5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 43, 74, 0.06);
            --shadow: 0 8px 30px rgba(15, 43, 74, 0.08);
            --shadow-lg: 0 20px 60px rgba(15, 43, 74, 0.12);
            --shadow-accent: 0 8px 30px rgba(201, 168, 76, 0.25);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1360px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 标题层级 ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
            font-weight: 800;
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            margin-bottom: 16px;
        }
        h3 {
            font-size: clamp(1.3rem, 2.2vw, 1.75rem);
        }
        h4 {
            font-size: 1.2rem;
        }

        /* ===== 间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section-sm {
            padding: 50px 0;
        }
        .section-lg {
            padding: 110px 0;
        }
        .gap-row {
            margin-bottom: 48px;
        }
        .gap-col {
            margin-bottom: 32px;
        }

        /* ===== 导航 Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
            background: rgba(255, 255, 255, 0.98);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            position: relative;
            padding: 4px 0;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2.5px;
            background: var(--accent);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background: var(--accent);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .nav-cta i {
            font-size: 0.8rem;
        }
        .nav-cta:hover {
            background: var(--accent);
            color: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-accent);
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201, 168, 76, 0.08) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 40px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 76, 0.15);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(201, 168, 76, 0.2);
            margin-bottom: 28px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            color: #fff;
            margin-bottom: 20px;
            line-height: 1.15;
        }
        .hero h1 .highlight {
            color: var(--accent);
        }
        .hero p {
            font-size: clamp(1.05rem, 1.6vw, 1.25rem);
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark) !important;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(201, 168, 76, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff !important;
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent) !important;
            background: rgba(201, 168, 76, 0.08);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 50px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-stat {
            color: #fff;
        }
        .hero-stat .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-light);
            font-size: 1.1rem;
            max-width: 580px;
            margin: 0 auto;
        }
        .section-title .accent-line {
            display: inline-block;
            width: 48px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-top: 12px;
        }

        /* ===== 卡片 ===== */
        .card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card .icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .card h4 {
            margin-bottom: 10px;
            color: var(--primary);
        }
        .card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.65;
        }
        .card .tag {
            display: inline-block;
            background: var(--bg-alt);
            color: var(--text-light);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 14px;
        }

        /* ===== 特色卡片（大图） ===== */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .feature-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .feature-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 43, 74, 0.4), transparent);
        }
        .feature-card .card-body {
            padding: 26px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .card-body h4 {
            margin-bottom: 8px;
        }
        .feature-card .card-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            flex: 1;
        }
        .feature-card .card-footer {
            padding: 0 24px 24px;
            margin-top: auto;
        }

        /* ===== 资讯列表 ===== */
        .post-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .post-item:last-child {
            border-bottom: none;
        }
        .post-item .thumb {
            flex-shrink: 0;
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            background-size: cover;
            background-position: center;
            background-color: var(--bg-alt);
        }
        .post-item .info {
            flex: 1;
            min-width: 0;
        }
        .post-item .info h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
        }
        .post-item .info h4 a {
            color: var(--text);
        }
        .post-item .info h4 a:hover {
            color: var(--accent);
        }
        .post-item .info .meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .post-item .info .meta i {
            margin-right: 4px;
        }
        .post-item .info .excerpt {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 6px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-alt);
            border-radius: var(--radius);
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            text-align: center;
            padding: 24px 16px;
            position: relative;
        }
        .step-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--accent);
            color: var(--primary-dark);
            transform: scale(1.05);
        }
        .step-item h4 {
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-light);
            font-size: 0.92rem;
            max-width: 240px;
            margin: 0 auto;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: flex;
                align-items: center;
                justify-content: center;
                color: var(--border);
                font-size: 1.5rem;
            }
        }

        /* ===== 分类入口 ===== */
        .cat-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .cat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
            border-color: var(--accent);
        }
        .cat-card .cat-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .cat-card h4 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .cat-card p {
            color: var(--text-light);
            font-size: 0.88rem;
        }
        .cat-card .cat-count {
            margin-top: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            background: var(--bg-alt);
            padding: 2px 14px;
            border-radius: 50px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(201, 168, 76, 0.1) 0%, transparent 60%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .logo span {
            background: linear-gradient(135deg, #fff, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer p {
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            display: block;
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            display: inline;
            margin: 0 4px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-stats {
                gap: 28px;
                flex-wrap: wrap;
            }
            .step-connector {
                display: none;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 24px 28px;
                gap: 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                align-items: stretch;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                font-size: 1.05rem;
                padding: 8px 0;
            }
            .nav-links .nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                min-height: 90vh;
            }
            .hero h1 {
                font-size: clamp(1.8rem, 8vw, 2.6rem);
            }
            .hero-stats {
                gap: 20px;
                padding-top: 28px;
                margin-top: 36px;
            }
            .hero-stat .num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-lg {
                padding: 70px 0;
            }
            .post-item {
                flex-direction: column;
                gap: 14px;
            }
            .post-item .thumb {
                width: 100%;
                height: 160px;
            }
            .site-footer .columns {
                margin-bottom: 32px;
            }
            .card {
                padding: 24px 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-stat .num {
                font-size: 1.2rem;
            }
            .hero-stat .label {
                font-size: 0.75rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
            .feature-card .card-img {
                height: 150px;
            }
            .post-item .thumb {
                height: 120px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                font-size: 0.88rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .text-accent {
            color: var(--accent);
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a1a2e;
            --text-body: #3d3d5c;
            --text-muted: #7a7a9a;
            --text-light: #e8ecf4;
            --border-color: #e2e6f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.08), 0 6px 20px rgba(0,0,0,0.04);
            --shadow-xl: 0 40px 80px rgba(0,0,0,0.10);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 72px;
            --space-3xl: 100px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.3; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }

        /* ===== Site Header (极简高端文字导航) ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled { background: rgba(255,255,255,0.98); box-shadow: 0 1px 20px rgba(0,0,0,0.06); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            max-width: 1200px; margin: 0 auto; padding: 14px 20px;
            gap: 20px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 22px; color: var(--primary); letter-spacing: -0.3px;
            transition: opacity var(--transition);
        }
        .logo i { color: var(--accent); font-size: 24px; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.85; }
        .nav-toggle { display: none; font-size: 24px; color: var(--primary); padding: 6px 10px; border-radius: var(--radius-sm); transition: background var(--transition); }
        .nav-toggle:hover { background: rgba(0,0,0,0.04); }
        .nav-links {
            display: flex; align-items: center; gap: 28px;
        }
        .nav-links a {
            position: relative;
            font-size: 15px; font-weight: 500; color: var(--text-body);
            padding: 6px 0;
            letter-spacing: 0.2px;
            transition: color var(--transition);
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%) scaleX(0);
            width: 80%; height: 2.5px; background: var(--accent); border-radius: 4px;
            transition: transform var(--transition);
        }
        .nav-links a:hover { color: var(--primary); }
        .nav-links a:hover::after { transform: translateX(-50%) scaleX(1); }
        .nav-links a.active { color: var(--primary); font-weight: 600; }
        .nav-links a.active::after { transform: translateX(-50%) scaleX(1); background: var(--accent); }
        .nav-cta {
            background: var(--accent) !important; color: var(--primary-dark) !important;
            padding: 8px 20px !important; border-radius: 50px !important; font-weight: 600 !important;
            display: flex; align-items: center; gap: 8px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition) !important;
        }
        .nav-cta i { font-size: 14px; transition: transform var(--transition); }
        .nav-cta:hover { background: var(--accent-light) !important; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,168,56,0.30) !important; }
        .nav-cta:hover i { transform: translateX(3px); }
        .nav-cta::after { display: none !important; }
        .nav-cta.active { background: var(--accent) !important; color: var(--primary-dark) !important; }

        /* ===== Page Hero / Banner ===== */
        .page-hero {
            position: relative; margin-top: 72px; padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a44 50%, var(--primary-dark) 100%);
            overflow: hidden; min-height: 360px; display: flex; align-items: center;
        }
        .page-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .page-hero .container { position: relative; z-index: 2; text-align: center; }
        .page-hero h1 {
            font-size: 44px; font-weight: 800; color: #fff; letter-spacing: -0.5px;
            margin-bottom: 16px; line-height: 1.2;
        }
        .page-hero h1 span { color: var(--accent); }
        .page-hero p {
            font-size: 18px; color: rgba(255,255,255,0.75); max-width: 680px; margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-hero .hero-tags {
            display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 10px;
        }
        .page-hero .hero-tags span {
            background: rgba(255,255,255,0.10); backdrop-filter: blur(6px);
            padding: 6px 16px; border-radius: 50px; font-size: 13px; color: rgba(255,255,255,0.80);
            border: 1px solid rgba(255,255,255,0.08);
        }

        /* ===== Section Common ===== */
        .section { padding: var(--space-2xl) 0; }
        .section-title {
            font-size: 32px; font-weight: 700; color: var(--text-dark);
            text-align: center; margin-bottom: 12px; letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 17px; color: var(--text-muted); text-align: center;
            max-width: 600px; margin: 0 auto 48px; line-height: 1.6;
        }
        .section-light { background: var(--bg-white); }
        .section-dark { background: var(--bg-dark); }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.6); }

        /* ===== Cards ===== */
        .card-platform {
            background: var(--bg-white); border-radius: var(--radius-md);
            padding: 32px 28px; height: 100%;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex; flex-direction: column;
        }
        .card-platform:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
        .card-platform .icon-wrap {
            width: 56px; height: 56px; border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(232,168,56,0.12), rgba(232,168,56,0.04));
            display: flex; align-items: center; justify-content: center;
            margin-bottom: 18px; font-size: 24px; color: var(--accent);
        }
        .card-platform h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; color: var(--text-dark); }
        .card-platform p { font-size: 14px; color: var(--text-muted); line-height: 1.6; flex: 1; }
        .card-platform .badge {
            display: inline-block; margin-top: 16px; padding: 4px 14px;
            border-radius: 50px; font-size: 12px; font-weight: 500;
            background: rgba(232,168,56,0.12); color: var(--accent-dark);
            align-self: flex-start;
        }

        /* ===== Step / Process ===== */
        .step-item {
            display: flex; gap: 24px; align-items: flex-start;
            padding: 24px 0; border-bottom: 1px solid var(--border-color);
        }
        .step-item:last-child { border-bottom: none; }
        .step-num {
            flex-shrink: 0; width: 44px; height: 44px; border-radius: 50%;
            background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 18px;
        }
        .step-content { flex: 1; }
        .step-content h4 { font-size: 17px; font-weight: 600; margin-bottom: 4px; color: var(--text-dark); }
        .step-content p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-md);
            margin-bottom: 12px; overflow: hidden;
            border: 1px solid var(--border-color); box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 18px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 16px; color: var(--text-dark);
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(0,0,0,0.01); }
        .faq-question i { color: var(--accent); font-size: 18px; transition: transform var(--transition); }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px; font-size: 15px; color: var(--text-muted); line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 34px; font-weight: 700; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 28px; }
        .cta-btn {
            display: inline-flex; align-items: center; gap: 10px;
            background: var(--accent); color: var(--primary-dark); font-weight: 700;
            padding: 16px 40px; border-radius: 50px; font-size: 17px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-btn:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(232,168,56,0.35); color: var(--primary-dark); }
        .cta-btn i { transition: transform var(--transition); }
        .cta-btn:hover i { transform: translateX(4px); }

        /* ===== Site Footer (复用片段) ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 24px; font-size: 14px;
        }
        .site-footer .logo { color: #fff; margin-bottom: 8px; display: inline-flex; }
        .site-footer .logo span { -webkit-text-fill-color: #fff; background: none; color: #fff; }
        .site-footer .logo i { color: var(--accent); }
        .site-footer p { line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 360px; }
        .site-footer h5 {
            font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer a {
            display: block; color: rgba(255,255,255,0.55); margin-bottom: 8px;
            transition: color var(--transition); font-size: 14px;
        }
        .site-footer a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px; margin-top: 32px; text-align: center;
            font-size: 13px; color: rgba(255,255,255,0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .page-hero h1 { font-size: 36px; }
            .section-title { font-size: 28px; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-links {
                position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
                background: rgba(255,255,255,0.98); backdrop-filter: blur(20px);
                flex-direction: column; padding: 40px 24px; gap: 20px;
                transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
                align-items: flex-start; overflow-y: auto;
            }
            .nav-links.open { transform: translateX(0); }
            .nav-links a { font-size: 18px; padding: 8px 0; }
            .nav-cta { align-self: flex-start; margin-top: 8px; }
            .page-hero { padding: 60px 0 48px; margin-top: 64px; min-height: 300px; }
            .page-hero h1 { font-size: 30px; }
            .page-hero p { font-size: 16px; }
            .section { padding: var(--space-xl) 0; }
            .section-title { font-size: 24px; }
            .section-subtitle { font-size: 15px; margin-bottom: 32px; }
            .card-platform { padding: 24px 20px; }
            .step-item { flex-direction: column; gap: 12px; }
            .step-num { width: 36px; height: 36px; font-size: 15px; }
            .cta-section h2 { font-size: 26px; }
            .cta-btn { padding: 14px 32px; font-size: 15px; }
            .site-footer .grid-x > .cell { margin-bottom: 24px; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 10px 16px; }
            .logo { font-size: 18px; }
            .logo i { font-size: 20px; }
            .page-hero h1 { font-size: 24px; }
            .page-hero p { font-size: 14px; }
            .section-title { font-size: 22px; }
            .faq-question { font-size: 14px; padding: 14px 16px; }
            .faq-answer { font-size: 13px; padding: 0 16px 14px; }
            .card-platform .icon-wrap { width: 44px; height: 44px; font-size: 20px; }
        }

        /* ===== Misc Utilities ===== */
        .text-accent { color: var(--accent); }
        .mt-1 { margin-top: var(--space-md); }
        .mt-2 { margin-top: var(--space-lg); }
        .mb-1 { margin-bottom: var(--space-md); }
        .mb-2 { margin-bottom: var(--space-lg); }
        .gap-md { gap: var(--space-md); }
        .gap-lg { gap: var(--space-lg); }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f2b4a;
            --primary-light: #1a4a7a;
            --primary-dark: #091c32;
            --accent: #d4a54a;
            --accent-hover: #c4943a;
            --accent-light: #f0d89a;
            --bg-body: #f4f6fb;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-section-alt: #eef1f7;
            --bg-dark: #0a1929;
            --text-primary: #0b1a2e;
            --text-body: #2c3e50;
            --text-muted: #6b7a8d;
            --text-white: #f0f4f8;
            --text-light: #a0b4c8;
            --border-light: #e2e8f0;
            --border-card: #e8edf4;
            --shadow-sm: 0 2px 8px rgba(15,43,74,0.06);
            --shadow-md: 0 6px 20px rgba(15,43,74,0.08);
            --shadow-lg: 0 16px 40px rgba(15,43,74,0.10);
            --shadow-hover: 0 12px 32px rgba(15,43,74,0.14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --transition: 0.28s cubic-bezier(0.25,0.46,0.45,0.94);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.3; }

        /* ===== Container ===== */
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; width: 100%; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Site Header ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky; top: 0; z-index: 1000;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(6px);
            background: rgba(255,255,255,0.96);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.3px;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, var(--primary) 40%, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { opacity: 0.92; }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--primary); padding: 6px 10px; border-radius: var(--radius-sm); }
        .nav-toggle:hover { background: var(--bg-section-alt); }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 0; height: 2px; background: var(--accent); border-radius: 4px;
            transition: width var(--transition);
        }
        .nav-links a:hover { color: var(--primary); background: rgba(15,43,74,0.04); }
        .nav-links a:hover::after { width: 60%; }
        .nav-links a.active { color: var(--primary); font-weight: 600; }
        .nav-links a.active::after { width: 60%; }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--accent), #c4943a);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(212,165,74,0.35);
            margin-left: 6px;
        }
        .nav-links a.nav-cta::after { display: none; }
        .nav-links a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212,165,74,0.45); background: linear-gradient(135deg, #c4943a, #b8842e); }
        .nav-links a.nav-cta i { margin-right: 6px; font-size: 0.85rem; }

        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; height: 60px; }
            .nav-toggle { display: block; }
            .nav-links {
                position: fixed; top: 60px; left: 0; right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s ease;
                z-index: 999;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .nav-links a::after { display: none; }
            .nav-links a.nav-cta { margin-left: 0; margin-top: 6px; text-align: center; }
        }

        /* ===== Hero / Article Banner ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: var(--primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: var(--text-white);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(9,28,50,0.88) 30%, rgba(15,43,74,0.70) 70%, rgba(10,25,41,0.60));
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .article-hero .breadcrumb a { color: var(--accent-light); text-decoration: none; }
        .article-hero .breadcrumb a:hover { color: #fff; }
        .article-hero .breadcrumb span { color: var(--text-light); }
        .article-hero .breadcrumb i { font-size: 0.7rem; margin: 0 4px; color: var(--text-light); }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 20px;
            letter-spacing: -0.4px;
            word-break: break-word;
        }
        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            align-items: center;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .article-hero .meta .category-tag {
            background: var(--accent);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }
        .article-hero .meta i { margin-right: 6px; color: var(--accent); }
        .article-hero .meta span { display: flex; align-items: center; }

        @media (max-width: 768px) {
            .article-hero { padding: 50px 0 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .meta { gap: 12px 20px; font-size: 0.85rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero .meta { flex-direction: column; align-items: flex-start; gap: 8px; }
        }

        /* ===== Article Content ===== */
        .article-content-wrap {
            padding: 50px 0 60px;
            background: var(--bg-white);
        }
        .article-content-inner {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 32px;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px auto;
            box-shadow: var(--shadow-md);
        }
        .article-body ul, .article-body ol {
            margin: 16px 0 24px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--bg-section-alt);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 28px 0;
            font-style: italic;
            color: var(--text-primary);
        }
        .article-body a { color: var(--primary-light); text-decoration: underline; }
        .article-body a:hover { color: var(--accent); }
        .article-body .cms-table-wrap { overflow-x: auto; margin: 24px 0; }
        .article-body table { width: 100%; border-collapse: collapse; border-radius: var(--radius-sm); overflow: hidden; }
        .article-body table th { background: var(--primary); color: #fff; padding: 12px 16px; font-weight: 600; }
        .article-body table td { padding: 10px 16px; border-bottom: 1px solid var(--border-light); }
        .article-body table tr:nth-child(even) { background: var(--bg-section-alt); }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .article-not-found h2 { font-size: 1.6rem; color: var(--text-primary); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; font-size: 1.05rem; }
        .article-not-found a { display: inline-block; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-xl); font-weight: 600; }
        .article-not-found a:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== Section Shared ===== */
        .section { padding: 70px 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-dark { background: var(--bg-dark); color: var(--text-white); }
        .section-title { font-size: 2rem; font-weight: 800; color: var(--text-primary); margin-bottom: 12px; }
        .section-subtitle { font-size: 1.05rem; color: var(--text-muted); max-width: 640px; margin-bottom: 40px; }
        .section-dark .section-title { color: #fff; }
        .section-dark .section-subtitle { color: var(--text-light); }
        .section-centered { text-align: center; }
        .section-centered .section-subtitle { margin-left: auto; margin-right: auto; }

        @media (max-width: 768px) {
            .section { padding: 50px 0; }
            .section-title { font-size: 1.6rem; }
        }

        /* ===== Related Cards ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 10px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: var(--accent-light); }
        .related-card .card-img {
            height: 180px;
            background: var(--bg-section-alt);
            overflow: hidden;
            position: relative;
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .related-card:hover .card-img img { transform: scale(1.06); }
        .related-card .card-img .tag {
            position: absolute; top: 12px; left: 12px;
            background: var(--accent); color: var(--primary-dark);
            padding: 2px 12px; border-radius: var(--radius-xl);
            font-size: 0.75rem; font-weight: 600;
        }
        .related-card .card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
        .related-card .card-body h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body h4 a { color: var(--text-primary); text-decoration: none; }
        .related-card .card-body h4 a:hover { color: var(--primary-light); }
        .related-card .card-body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .meta { font-size: 0.78rem; color: var(--text-muted); display: flex; justify-content: space-between; align-items: center; }
        .related-card .card-body .meta i { margin-right: 4px; }
        .related-empty { grid-column: 1 / -1; text-align: center; padding: 30px; color: var(--text-muted); font-size: 1rem; }

        @media (max-width: 1024px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } }

        /* ===== Platform Guide Section ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .guide-grid .guide-image { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-lg); }
        .guide-grid .guide-image img { width: 100%; display: block; }
        .guide-grid .guide-text h3 { font-size: 1.6rem; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
        .guide-grid .guide-text p { color: var(--text-muted); margin-bottom: 16px; font-size: 1rem; line-height: 1.75; }
        .guide-grid .guide-text ul { margin-top: 12px; }
        .guide-grid .guide-text ul li { margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; color: var(--text-body); }
        .guide-grid .guide-text ul li i { color: var(--accent); margin-top: 2px; min-width: 18px; }

        @media (max-width: 768px) {
            .guide-grid { grid-template-columns: 1fr; gap: 28px; }
            .guide-grid .guide-image { order: -1; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--bg-white);
            transition: background var(--transition);
            user-select: none;
        }
        .faq-question:hover { background: var(--bg-section-alt); }
        .faq-question i { color: var(--accent); font-size: 1.1rem; transition: transform 0.3s ease; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1a4a7a);
            padding: 70px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            background-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .cta-section p { font-size: 1.05rem; color: var(--text-light); max-width: 600px; margin: 0 auto 30px; }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: var(--radius-xl);
            box-shadow: 0 6px 24px rgba(212,165,74,0.40);
            transition: all var(--transition);
            text-decoration: none;
        }
        .cta-section .cta-btn:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(212,165,74,0.55); background: #c4943a; color: var(--primary-dark); }
        .cta-section .cta-btn i { font-size: 1.1rem; }

        @media (max-width: 768px) {
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section .cta-btn { padding: 14px 28px; font-size: 1rem; }
        }

        /* ===== Site Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 50px 0 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-footer .logo { color: #fff; margin-bottom: 8px; }
        .site-footer .logo span { -webkit-text-fill-color: #fff; background: none; }
        .site-footer p { font-size: 0.92rem; line-height: 1.7; color: var(--text-light); }
        .site-footer h5 { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 16px; letter-spacing: 0.3px; }
        .site-footer a {
            display: block;
            color: var(--text-light);
            font-size: 0.92rem;
            padding: 4px 0;
            transition: all var(--transition);
            text-decoration: none;
        }
        .site-footer a:hover { color: var(--accent); padding-left: 4px; }
        .site-footer .footer-bottom {
            margin-top: 36px;
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.06);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .site-footer .grid-x .cell { margin-bottom: 28px; }
            .site-footer .footer-bottom { margin-top: 20px; }
        }

        /* ===== Utilities ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Mobile tweaks ===== */
        @media (max-width: 520px) {
            .article-body { font-size: 0.98rem; }
            .section-title { font-size: 1.4rem; }
        }