/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #dc2626;
            --primary-dark: #b91c1c;
            --primary-light: #ef4444;
            --accent: #d4a843;
            --accent-light: #e4b94f;
            --bg-deep: #0a0a15;
            --bg-card: #121225;
            --bg-card-hover: #1a1a35;
            --bg-elevated: #1e1e3a;
            --text-primary: #f1f1f1;
            --text-secondary: #a0a0b8;
            --text-muted: #6b6b85;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(220, 38, 38, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header / 导航卡片面板 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 16px 0;
            background: rgba(10, 10, 21, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .header.scrolled {
            background: rgba(10, 10, 21, 0.95);
            box-shadow: var(--shadow-md);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* Logo */
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.5px;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }
        .logo .logo-text {
            background: linear-gradient(135deg, var(--text-primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* 导航卡片面板 */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 6px 10px;
            box-shadow: var(--shadow-sm);
        }

        .nav-panel .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
            background: transparent;
            border: none;
            white-space: nowrap;
        }
        .nav-panel .nav-item i {
            font-size: 14px;
            opacity: 0.7;
        }
        .nav-panel .nav-item:hover {
            background: var(--bg-card-hover);
            color: var(--text-primary);
        }
        .nav-panel .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(220, 38, 38, 0.3);
        }
        .nav-panel .nav-item.active i {
            opacity: 1;
        }

        .nav-cta {
            background: var(--accent);
            color: #0a0a15 !important;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.3);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            width: 44px;
            height: 44px;
            font-size: 20px;
            color: var(--text-primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-card-hover);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            text-align: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(10, 10, 21, 0.85) 0%,
                    rgba(10, 10, 21, 0.6) 50%,
                    rgba(10, 10, 21, 0.85) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 30%, rgba(220, 38, 38, 0.08) 0%, transparent 70%);
            z-index: 1;
        }
        .hero * {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 880px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(220, 38, 38, 0.2);
            border: 1px solid rgba(220, 38, 38, 0.3);
            border-radius: 100px;
            padding: 8px 20px;
            font-size: 14px;
            color: var(--primary-light);
            margin-bottom: 24px;
            backdrop-filter: blur(10px);
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero-title {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 20px;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 17px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(220, 38, 38, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(220, 38, 38, 0.4);
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--border-light);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 17px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat-number {
            font-size: 36px;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 100px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-light);
            background: rgba(220, 38, 38, 0.1);
            border: 1px solid rgba(220, 38, 38, 0.2);
            padding: 4px 16px;
            border-radius: 100px;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .section-title {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .section-title .highlight {
            color: var(--accent);
        }
        .section-desc {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== 核心说明 ===== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .about-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .about-image:hover img {
            transform: scale(1.03);
        }
        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--bg-deep) 0%, transparent 50%);
            opacity: 0.3;
        }
        .about-text h3 {
            font-size: 28px;
            margin-bottom: 20px;
        }
        .about-text p {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .about-feature {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
        }
        .about-feature i {
            color: var(--accent);
            font-size: 16px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(212, 168, 67, 0.1);
            border-radius: 50%;
            flex-shrink: 0;
        }
        .about-feature span {
            font-size: 15px;
            font-weight: 500;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            position: relative;
            transition: var(--transition);
            counter-increment: step;
        }
        .step-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .step-card::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
        }
        .step-card .step-icon {
            font-size: 40px;
            color: var(--accent);
            margin-bottom: 16px;
            margin-top: 8px;
        }
        .step-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 分类入口 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, var(--bg-deep) 0%, transparent 60%);
            opacity: 0.4;
        }
        .category-card .card-body {
            padding: 24px;
        }
        .category-card .card-body h4 {
            font-size: 18px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .category-card .card-body h4 i {
            color: var(--accent);
            font-size: 16px;
        }
        .category-card .card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--primary-light);
            background: rgba(220, 38, 38, 0.08);
            padding: 4px 14px;
            border-radius: 100px;
            font-weight: 500;
        }

        /* ===== 最新资讯 / CMS 列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .news-card .news-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-card .news-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
        }
        .news-card .news-body {
            padding: 20px;
        }
        .news-card .news-body .news-date {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }
        .news-card .news-body h4 {
            font-size: 17px;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-card .news-body .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
        }
        .news-card .news-body .news-link:hover {
            gap: 10px;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        .news-empty i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .news-empty p {
            font-size: 18px;
            color: var(--text-secondary);
        }

        /* ===== 注册优势 / 数据 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .advantage-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .advantage-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .advantage-card .adv-icon {
            font-size: 40px;
            color: var(--accent);
            margin-bottom: 16px;
            width: 72px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            background: rgba(212, 168, 67, 0.08);
            border-radius: 50%;
        }
        .advantage-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
        }
        .advantage-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .advantage-card .adv-number {
            font-size: 42px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .advantage-card .adv-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-item .faq-question:hover {
            color: var(--accent);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(220, 38, 38, 0.1);
            border-radius: 50%;
            color: var(--primary-light);
            transition: var(--transition);
            font-size: 14px;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item .faq-answer p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
            position: relative;
            padding: 100px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 21, 0.92) 0%, rgba(10, 10, 21, 0.7) 100%);
        }
        .cta-section * {
            position: relative;
            z-index: 2;
        }
        .cta-content {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .cta-content .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: transparent;
            color: var(--text-primary);
            border: 2px solid var(--text-primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 17px;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-light:hover {
            background: var(--text-primary);
            color: var(--bg-deep);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 15px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .footer-links a {
            font-size: 14px;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent);
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            visibility: hidden;
            z-index: 999;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 44px;
            }
            .about-grid {
                gap: 40px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 70px;
            }
            .header {
                padding: 12px 0;
            }
            .nav-panel {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 16px;
                right: 16px;
                flex-direction: column;
                background: var(--bg-card);
                border: 1px solid var(--border-color);
                border-radius: var(--radius-md);
                padding: 8px;
                box-shadow: var(--shadow-lg);
            }
            .nav-panel.open {
                display: flex;
            }
            .nav-panel .nav-item {
                width: 100%;
                justify-content: flex-start;
                padding: 14px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-panel .nav-cta {
                width: 100%;
                justify-content: center;
                margin-top: 4px;
            }
            .menu-toggle {
                display: flex;
            }

            .hero {
                min-height: 90vh;
                padding: 100px 20px 60px;
            }
            .hero-title {
                font-size: 34px;
            }
            .hero-subtitle {
                font-size: 17px;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 28px;
                margin-top: 36px;
            }
            .hero-stat-number {
                font-size: 28px;
            }

            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-desc {
                font-size: 16px;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .about-image img {
                height: 260px;
            }
            .about-features {
                grid-template-columns: 1fr;
            }
            .about-text h3 {
                font-size: 24px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .advantages-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .faq-item .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .cta-content h2 {
                font-size: 28px;
            }
            .cta-content p {
                font-size: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
                font-size: 15px;
            }
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .news-card .news-img {
                height: 140px;
            }
            .category-card .card-img {
                height: 160px;
            }
            .cta-content .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .cta-content .btn-group .btn-primary,
            .cta-content .btn-group .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }

        @media (min-width: 769px) {
            .nav-panel {
                display: flex !important;
            }
            .menu-toggle {
                display: none !important;
            }
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #c8102e;
            --primary-dark: #a00d24;
            --primary-light: #e81e3e;
            --secondary: #1a1a2e;
            --secondary-light: #2a2a4e;
            --accent: #f5c518;
            --accent-dark: #d4a814;
            --bg-dark: #0d0d1a;
            --bg-card: #16162a;
            --bg-card-hover: #1e1e3a;
            --bg-section: #12122a;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0c8;
            --text-muted: #707090;
            --border-color: rgba(200, 16, 46, 0.3);
            --border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --font-heading: 'Inter', 'Segoe UI', system-ui, sans-serif;
            --container-max: 1200px;
            --header-height: 80px;
        }

        /* ===== 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-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 28px; border-radius: 50px;
            font-size: 15px; font-weight: 600; line-height: 1;
            border: none; cursor: pointer;
            transition: var(--transition);
            text-decoration: none; white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary); color: #fff;
            box-shadow: 0 4px 20px rgba(200, 16, 46, 0.4);
        }
        .btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(200, 16, 46, 0.5); }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent; color: var(--text-primary);
            border: 2px solid var(--border-color);
        }
        .btn-outline:hover { background: rgba(200, 16, 46, 0.15); border-color: var(--primary); color: var(--primary-light); transform: translateY(-2px); }
        .btn-accent {
            background: var(--accent); color: #1a1a2e;
            box-shadow: 0 4px 20px rgba(245, 197, 24, 0.3);
        }
        .btn-accent:hover { background: var(--accent-dark); color: #1a1a2e; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(245, 197, 24, 0.4); }
        .btn-sm { padding: 8px 18px; font-size: 13px; }
        .btn-lg { padding: 16px 36px; font-size: 17px; }

        /* ===== Header / Nav Panel ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0;
            z-index: 1000; height: var(--header-height);
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .header.scrolled { background: rgba(13, 13, 26, 0.98); box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 20px; font-weight: 800; color: var(--text-primary);
            text-decoration: none; letter-spacing: -0.5px;
        }
        .logo-icon {
            width: 40px; height: 40px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; color: #fff; box-shadow: 0 4px 12px rgba(200, 16, 46, 0.3);
        }
        .logo-text { background: linear-gradient(135deg, #fff, #c8c8e0); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .nav-panel {
            display: flex; align-items: center; gap: 6px;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 8px; border-radius: 50px;
            border: 1px solid var(--border-light);
            backdrop-filter: blur(10px);
        }
        .nav-item {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 16px; border-radius: 50px;
            font-size: 14px; font-weight: 500; color: var(--text-secondary);
            text-decoration: none; transition: var(--transition);
            white-space: nowrap;
        }
        .nav-item i { font-size: 14px; }
        .nav-item:hover { background: rgba(255, 255, 255, 0.08); color: var(--text-primary); }
        .nav-item.active { background: var(--primary); color: #fff; box-shadow: 0 4px 15px rgba(200, 16, 46, 0.3); }
        .nav-item.active:hover { background: var(--primary-dark); }
        .nav-cta {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 20px; border-radius: 50px;
            font-size: 14px; font-weight: 600; color: #1a1a2e;
            background: var(--accent); text-decoration: none;
            transition: var(--transition); white-space: nowrap;
            box-shadow: 0 4px 15px rgba(245, 197, 24, 0.2);
        }
        .nav-cta:hover { background: var(--accent-dark); color: #1a1a2e; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(245, 197, 24, 0.3); }
        .nav-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 24px; cursor: pointer; padding: 8px; border-radius: 8px; }
        .nav-toggle:hover { background: rgba(255,255,255,0.05); }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed; bottom: 30px; right: 30px;
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--primary); color: #fff;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; box-shadow: var(--shadow-md);
            opacity: 0; visibility: hidden; transform: translateY(20px);
            transition: var(--transition); z-index: 999; border: none; cursor: pointer;
        }
        .back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

        /* ===== Hero Banner (Article) ===== */
        .article-hero {
            position: relative; padding: 140px 0 80px; margin-top: var(--header-height);
            min-height: 360px; display: flex; align-items: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15; z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(13,13,26,0.85) 0%, rgba(22,22,42,0.7) 100%);
            z-index: 1;
        }
        .article-hero .container { position: relative; z-index: 2; width: 100%; }
        .article-hero .breadcrumb {
            display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
            font-size: 14px; color: var(--text-muted); margin-bottom: 20px;
        }
        .article-hero .breadcrumb a { color: var(--text-secondary); }
        .article-hero .breadcrumb a:hover { color: var(--primary-light); }
        .article-hero .breadcrumb span { color: var(--text-primary); }
        .article-hero .category-badge {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 16px; border-radius: 50px;
            background: rgba(200,16,46,0.2); border: 1px solid var(--border-color);
            color: var(--primary-light); font-size: 13px; font-weight: 500;
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: clamp(28px, 4vw, 48px);
            font-weight: 800; line-height: 1.2; max-width: 900px;
            background: linear-gradient(135deg, #fff 60%, #b0b0c8);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .article-meta {
            display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
            margin-top: 24px; font-size: 14px; color: var(--text-secondary);
        }
        .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-meta span { display: flex; align-items: center; }

        /* ===== Article Main Content ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-dark);
        }
        .article-layout {
            display: grid; grid-template-columns: 1fr 320px; gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--border-light); overflow: hidden;
            padding: 48px 56px; box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image {
            width: 100%; height: auto; border-radius: var(--radius-md);
            margin-bottom: 32px; box-shadow: var(--shadow-md);
        }
        .article-body .content {
            font-size: 17px; line-height: 1.9; color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 20px; }
        .article-body .content h2 { font-size: 24px; margin: 40px 0 16px; color: var(--text-primary); }
        .article-body .content h3 { font-size: 20px; margin: 32px 0 12px; color: var(--text-primary); }
        .article-body .content ul, .article-body .content ol { margin: 16px 0; padding-left: 24px; }
        .article-body .content li { margin-bottom: 8px; list-style: disc; }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }
        .article-body .content a:hover { color: var(--accent); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px;
            margin: 24px 0; background: rgba(200,16,46,0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic; color: var(--text-primary);
        }
        .article-body .content img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-sm); }
        .article-body .content .wp-block-table { overflow-x: auto; margin: 24px 0; }
        .article-body .content table { width: 100%; border-collapse: collapse; font-size: 15px; }
        .article-body .content th, .article-body .content td { padding: 12px 16px; border: 1px solid var(--border-light); text-align: left; }
        .article-body .content th { background: rgba(200,16,46,0.1); color: var(--text-primary); font-weight: 600; }
        .article-body .content td { color: var(--text-secondary); }
        .article-body .content code { background: rgba(255,255,255,0.05); padding: 2px 8px; border-radius: 4px; font-size: 14px; color: var(--accent); }
        .article-body .content pre { background: rgba(0,0,0,0.3); padding: 20px; border-radius: var(--radius-md); overflow-x: auto; margin: 24px 0; }
        .article-body .content pre code { background: none; padding: 0; color: var(--text-secondary); }

        .article-tags {
            display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
            margin-top: 40px; padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 14px; border-radius: 50px;
            background: rgba(255,255,255,0.05); border: 1px solid var(--border-light);
            color: var(--text-secondary); font-size: 13px; transition: var(--transition);
        }
        .article-tags .tag:hover { background: rgba(200,16,46,0.1); border-color: var(--border-color); color: var(--primary-light); }

        .article-share {
            display: flex; align-items: center; gap: 12px;
            margin-top: 20px; padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span { font-size: 14px; color: var(--text-muted); }
        .article-share a {
            width: 40px; height: 40px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            background: rgba(255,255,255,0.05); color: var(--text-secondary);
            font-size: 16px; transition: var(--transition); border: 1px solid var(--border-light);
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex; flex-direction: column; gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--border-light); padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h3 {
            font-size: 18px; font-weight: 700; margin-bottom: 16px;
            display: flex; align-items: center; gap: 10px;
        }
        .sidebar-card h3 i { color: var(--primary-light); }
        .sidebar-card .latest-item {
            display: flex; gap: 12px; padding: 12px 0;
            border-bottom: 1px solid var(--border-light); transition: var(--transition);
        }
        .sidebar-card .latest-item:last-child { border-bottom: none; padding-bottom: 0; }
        .sidebar-card .latest-item:hover { padding-left: 8px; }
        .sidebar-card .latest-item .thumb {
            width: 60px; height: 60px; border-radius: var(--radius-sm);
            object-fit: cover; flex-shrink: 0; background: var(--bg-section);
        }
        .sidebar-card .latest-item .info h4 {
            font-size: 14px; font-weight: 600; color: var(--text-primary);
            line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
        }
        .sidebar-card .latest-item .info .date { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
        .sidebar-card .latest-item:hover h4 { color: var(--primary-light); }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none; text-align: center; padding: 32px 24px;
        }
        .sidebar-cta h3 { color: #fff; justify-content: center; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 14px; margin-bottom: 20px; }
        .sidebar-cta .btn { background: #fff; color: var(--primary); }
        .sidebar-cta .btn:hover { background: var(--accent); color: #1a1a2e; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0; background: var(--bg-section);
            border-top: 1px solid var(--border-light);
        }
        .related-section h2 {
            font-size: 28px; font-weight: 800; margin-bottom: 40px;
            text-align: center;
        }
        .related-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-lg);
            border: 1px solid var(--border-light); overflow: hidden;
            transition: var(--transition); box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--border-color); }
        .related-card .thumb {
            width: 100%; height: 200px; object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .related-card .info { padding: 20px 24px 24px; }
        .related-card .info .cat {
            display: inline-block; padding: 4px 12px; border-radius: 50px;
            font-size: 12px; font-weight: 500; background: rgba(200,16,46,0.15);
            color: var(--primary-light); margin-bottom: 10px;
        }
        .related-card .info h3 { font-size: 18px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
        .related-card .info h3 a { color: var(--text-primary); }
        .related-card .info h3 a:hover { color: var(--primary-light); }
        .related-card .info p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .info .meta { font-size: 12px; color: var(--text-muted); margin-top: 12px; display: flex; align-items: center; gap: 16px; }

        /* ===== Footer ===== */
        .footer {
            background: var(--secondary); border-top: 1px solid var(--border-light);
            padding: 60px 0 30px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { font-size: 18px; margin-bottom: 16px; }
        .footer-brand p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; max-width: 360px; }
        .footer-col h5 { font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 14px; color: var(--text-secondary); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-col ul li a i { width: 20px; color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid var(--border-light); padding-top: 24px;
            display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom p { font-size: 13px; color: var(--text-muted); }
        .footer-links { display: flex; gap: 16px; }
        .footer-links a { font-size: 13px; color: var(--text-secondary); }
        .footer-links a:hover { color: var(--primary-light); }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center; padding: 80px 20px;
        }
        .not-found .icon { font-size: 64px; color: var(--primary-light); margin-bottom: 24px; }
        .not-found h2 { font-size: 32px; margin-bottom: 12px; }
        .not-found p { color: var(--text-secondary); margin-bottom: 24px; font-size: 16px; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 70px; }
            .nav-panel { display: none; position: absolute; top: var(--header-height); left: 16px; right: 16px; background: rgba(13,13,26,0.98); border-radius: var(--radius-md); flex-direction: column; padding: 16px; gap: 8px; border: 1px solid var(--border-light); backdrop-filter: blur(20px); }
            .nav-panel.open { display: flex; }
            .nav-item, .nav-cta { width: 100%; justify-content: center; padding: 12px 16px; }
            .nav-toggle { display: block; }
            .article-hero { padding: 100px 0 50px; min-height: 280px; }
            .article-body { padding: 24px 20px; }
            .article-body .content { font-size: 15px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 24px; }
            .article-meta { gap: 12px; font-size: 13px; }
            .article-body { padding: 16px; }
            .article-body .content table { font-size: 13px; }
            .article-body .content th, .article-body .content td { padding: 8px 10px; }
            .related-card .thumb { height: 180px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #c8102e;
            --primary-dark: #a00d24;
            --primary-light: #e81e3e;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d44;
            --accent: #f5c518;
            --accent-dark: #d4a814;
            --bg-body: #0d0d1a;
            --bg-card: #16162a;
            --bg-card-hover: #1e1e38;
            --bg-section: #111122;
            --bg-section-alt: #0a0a18;
            --text-primary: #f0f0f8;
            --text-secondary: #b0b0c8;
            --text-muted: #707088;
            --border-color: #2a2a44;
            --border-light: #3a3a54;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 40px rgba(200, 16, 46, 0.15);
            --shadow-glow-accent: 0 0 40px rgba(245, 197, 24, 0.1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --container-padding: 20px;
            --nav-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

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

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            width: 100%;
        }

        /* ===== Navigation ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .logo .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            box-shadow: 0 0 20px rgba(200, 16, 46, 0.3);
        }
        .logo .logo-text {
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            padding: 4px 6px;
            border-radius: 60px;
            border: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-item i {
            font-size: 14px;
            opacity: 0.7;
        }
        .nav-item:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-item.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
        }
        .nav-item.active i {
            opacity: 1;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 20px rgba(200, 16, 46, 0.3);
            transition: all var(--transition);
            white-space: nowrap;
            margin-left: 4px;
        }
        .nav-cta i {
            font-size: 14px;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(200, 16, 46, 0.45);
            color: #fff;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
            z-index: 1001;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--bg-section) 0%, var(--secondary) 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.85) 0%, rgba(26, 26, 46, 0.75) 100%);
        }
        .banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(200, 16, 46, 0.2);
            border: 1px solid rgba(200, 16, 46, 0.3);
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .banner-badge i {
            font-size: 12px;
        }
        .banner h1 {
            font-size: 46px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .banner h1 span {
            color: var(--primary-light);
        }
        .banner p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .banner-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 6px 30px rgba(200, 16, 46, 0.35);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(200, 16, 46, 0.5);
            color: #fff;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--border-light);
            transform: translateY(-3px);
            color: var(--text-primary);
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header h2 i {
            color: var(--primary-light);
            margin-right: 10px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Cards Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(200, 16, 46, 0.2), rgba(200, 16, 46, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary-light);
            margin-bottom: 18px;
            border: 1px solid rgba(200, 16, 46, 0.15);
        }
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .card .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 11px;
            font-weight: 600;
            background: rgba(200, 16, 46, 0.15);
            color: var(--primary-light);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 600;
            color: var(--primary-light);
            font-size: 14px;
        }
        .card .card-link i {
            transition: transform var(--transition);
        }
        .card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== Cover Card ===== */
        .cover-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            border-color: var(--border-light);
        }
        .cover-card .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .cover-card .cover-body {
            padding: 22px 20px 24px;
        }
        .cover-card .cover-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cover-card .cover-body p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .cover-card .cover-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .cover-card .cover-meta i {
            margin-right: 4px;
        }

        /* ===== Steps / Timeline ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 30px 24px 26px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-card::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(200, 16, 46, 0.3);
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-light);
        }
        .step-card .step-icon {
            font-size: 32px;
            color: var(--primary-light);
            margin-bottom: 14px;
            margin-top: 6px;
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(200, 16, 46, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary-light);
            transition: transform var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== Stats / Data ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-light);
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 38px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-section) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            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: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 70px 20px;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
        .cta-section .btn-primary {
            font-size: 18px;
            padding: 16px 44px;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }
        .footer-brand .logo {
            margin-bottom: 16px;
            font-size: 20px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 13px;
            width: 18px;
            color: var(--text-muted);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
        }
        .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--text-primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 16px;
                --nav-height: 64px;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-panel {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 13, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                border: none;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all var(--transition-slow);
                gap: 10px;
            }
            .nav-panel.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-item {
                width: 100%;
                justify-content: center;
                padding: 12px 18px;
                font-size: 15px;
            }
            .nav-cta {
                width: 100%;
                justify-content: center;
                margin-left: 0;
                padding: 12px 18px;
            }

            .banner {
                padding: 70px 0 50px;
                min-height: 300px;
            }
            .banner h1 {
                font-size: 30px;
            }
            .banner p {
                font-size: 15px;
            }

            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }

            .grid-3,
            .grid-2,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-number {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }

            .cta-section .container {
                padding: 50px 16px;
            }
            .cta-section h2 {
                font-size: 26px;
            }

            .banner-actions .btn-primary,
            .banner-actions .btn-secondary {
                padding: 12px 26px;
                font-size: 14px;
            }
            .cover-card .cover-img {
                height: 160px;
            }
        }

        @media (max-width: 520px) {
            .banner h1 {
                font-size: 24px;
            }
            .banner p {
                font-size: 14px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 13px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 14px;
                padding: 0 16px 14px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 22px;
                font-size: 14px;
            }
            .nav-item {
                font-size: 14px;
                padding: 10px 14px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .w-full {
            width: 100%;
        }
        .relative {
            position: relative;
        }