/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b1a2e;
            --primary-light: #1a2d4a;
            --primary-dark: #060f1a;
            --accent: #c9a84c;
            --accent-light: #e8c76a;
            --accent-dark: #a8882e;
            --bg-dark: #0b1a2e;
            --bg-mid: #1a2d4a;
            --bg-light: #f8f6f2;
            --bg-white: #ffffff;
            --text-dark: #1a1a2e;
            --text-light: #f0f0f0;
            --text-muted: #8899aa;
            --text-body: #2c3e50;
            --border: rgba(201, 168, 76, 0.2);
            --border-light: rgba(255, 255, 255, 0.08);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 40px rgba(201, 168, 76, 0.15);
            --radius: 16px;
            --radius-sm: 8px;
            --radius-xl: 24px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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-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(--accent);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-light);
        }

        button,
        input,
        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;
        }

        /* ===== 通用标题 ===== */
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            transition: var(--transition);
            background: rgba(11, 26, 46, 0.15);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-header.scrolled {
            background: rgba(11, 26, 46, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(201, 168, 76, 0.15);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 4px 0;
            transition: var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-list a:hover {
            color: var(--text-light);
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .nav-list a.active {
            color: var(--accent-light);
        }
        .nav-list a.active::after {
            width: 100%;
            background: var(--accent-light);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary) !important;
            padding: 8px 20px !important;
            border-radius: 100px;
            font-weight: 600 !important;
            font-size: 0.9rem !important;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(201, 168, 76, 0.3);
        }
        .nav-cta::after {
            display: none !important;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(201, 168, 76, 0.4);
            color: var(--primary) !important;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
        }
        .hamburger span {
            width: 26px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 26, 46, 0.85) 0%, rgba(11, 26, 46, 0.6) 50%, rgba(11, 26, 46, 0.85) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 76, 0.15);
            border: 1px solid rgba(201, 168, 76, 0.3);
            border-radius: 100px;
            padding: 6px 18px;
            font-size: 0.85rem;
            color: var(--accent-light);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: 4rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -0.03em;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /* 倒计时 */
        .countdown {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 16px 24px;
            min-width: 80px;
            text-align: center;
        }
        .countdown-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .countdown-item .label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-top: 4px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 100px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 25px rgba(201, 168, 76, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(201, 168, 76, 0.35);
            color: var(--primary);
        }
        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-light);
            padding: 14px 36px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-light);
            transform: translateY(-3px);
        }

        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: rgba(255, 255, 255, 0.3);
            font-size: 1.6rem;
            animation: bounceDown 2s infinite;
        }
        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ===== 品牌故事 ===== */
        .section-brand {
            padding: 100px 0;
            background: var(--bg-white);
        }
        .brand-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .brand-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .brand-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }
        .brand-image:hover img {
            transform: scale(1.03);
        }
        .brand-text .section-title {
            font-size: 2.4rem;
        }
        .brand-text p {
            color: var(--text-body);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .brand-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 24px;
        }
        .brand-feature {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 500;
            color: var(--primary);
        }
        .brand-feature i {
            color: var(--accent);
            font-size: 1.2rem;
            width: 28px;
            text-align: center;
        }

        /* ===== 分类入口 ===== */
        .section-categories {
            padding: 100px 0;
            background: var(--bg-light);
        }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            cursor: pointer;
            display: block;
            color: inherit;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            color: inherit;
        }
        .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(1.08);
        }
        .category-card .card-img .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 26, 46, 0.6), transparent);
        }
        .category-card .card-body {
            padding: 24px;
        }
        .category-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-dark);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .category-card .card-tag i {
            transition: var(--transition);
        }
        .category-card:hover .card-tag i {
            transform: translateX(4px);
        }

        /* ===== 最新资讯 ===== */
        .section-news {
            padding: 100px 0;
            background: var(--bg-white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--bg-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            display: block;
            color: inherit;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            color: inherit;
        }
        .news-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .news-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .card-img img {
            transform: scale(1.05);
        }
        .news-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .news-card .card-body {
            padding: 20px 24px 24px;
        }
        .news-card .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .card-body .meta i {
            margin-right: 4px;
        }
        .news-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.1rem;
            background: var(--bg-light);
            border-radius: var(--radius);
        }
        .news-empty i {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== 数据统计 ===== */
        .section-stats {
            padding: 100px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .section-stats::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(8px);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .num span {
            font-size: 1.6rem;
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 400;
            letter-spacing: 0.03em;
        }
        .stat-item i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
            opacity: 0.8;
        }

        /* ===== 服务特色 ===== */
        .section-features {
            padding: 100px 0;
            background: var(--bg-light);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(201, 168, 76, 0.12), rgba(201, 168, 76, 0.05));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .icon {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== 流程 ===== */
        .section-process {
            padding: 100px 0;
            background: var(--bg-white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--accent), rgba(201, 168, 76, 0.2), var(--accent));
            z-index: 0;
        }
        .step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }
        .step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            margin: 0 auto 20px;
            border: 3px solid var(--accent);
            box-shadow: 0 0 0 4px var(--bg-white);
        }
        .step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 100px 0;
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 0, 0, 0.04);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 1rem;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 100px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        .cta-content .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            max-width: 280px;
            line-height: 1.7;
        }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            color: rgba(255, 255, 255, 0.3);
            font-size: 0.82rem;
        }
        .footer-bottom .social {
            display: flex;
            gap: 16px;
        }
        .footer-bottom .social a {
            color: rgba(255, 255, 255, 0.3);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-bottom .social a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 3.2rem;
            }
            .brand-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .brand-image img {
                height: 300px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-list {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(11, 26, 46, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 32px;
                gap: 20px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
            }
            .hamburger {
                display: flex;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .countdown {
                gap: 12px;
            }
            .countdown-item {
                padding: 12px 16px;
                min-width: 64px;
            }
            .countdown-item .num {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .brand-features {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 32px 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .nav-cta {
                display: inline-flex;
                width: auto;
                align-self: flex-start;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                max-width: 320px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .countdown-item {
                padding: 10px 12px;
                min-width: 56px;
            }
            .countdown-item .num {
                font-size: 1.4rem;
            }
            .countdown-item .label {
                font-size: 0.7rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .num {
                font-size: 1.6rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .step .step-num {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .faq-question {
                font-size: 0.92rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px 16px;
                font-size: 0.88rem;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .brand-image img {
                height: 220px;
            }
            .category-card .card-img {
                height: 160px;
            }
            .news-card .card-img {
                height: 150px;
            }
            .feature-card {
                padding: 28px 20px;
            }
            .feature-card .icon {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #d4a017;
            --clr-primary-light: #f0c75e;
            --clr-primary-dark: #b8860b;
            --clr-secondary: #1a1a2e;
            --clr-accent: #e94560;
            --clr-bg: #0b0b1a;
            --clr-bg-alt: #12122a;
            --clr-bg-card: #1a1a35;
            --clr-text: #f5f5fa;
            --clr-text-muted: #a0a0c0;
            --clr-text-dark: #0b0b1a;
            --clr-border: rgba(212, 160, 23, 0.25);
            --clr-border-light: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --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(212, 160, 23, 0.15);
            --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --max-width: 1200px;
            --header-height: 76px;
        }

        /* ===== 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-main);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: clamp(2.2rem, 6vw, 4rem);
        }
        h2 {
            font-size: clamp(1.6rem, 4vw, 2.6rem);
        }
        h3 {
            font-size: clamp(1.15rem, 2.5vw, 1.5rem);
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--clr-text-muted);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        .badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 11, 26, 0.55);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid var(--clr-border-light);
            transition: var(--transition);
            box-shadow: none;
        }
        .site-header.scrolled {
            background: rgba(11, 11, 26, 0.92);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            border-bottom-color: var(--clr-border);
        }
        .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: 1.6rem;
            font-weight: 800;
            color: var(--clr-primary-light);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.8rem;
            color: var(--clr-primary);
        }
        .logo span {
            background: linear-gradient(135deg, #f5d47a, var(--clr-primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--clr-primary);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-list a:hover {
            color: #fff;
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .nav-list a.active {
            color: var(--clr-primary-light);
        }
        .nav-list a.active::after {
            width: 100%;
            background: var(--clr-primary-light);
        }
        .nav-list .nav-cta {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 20px rgba(212, 160, 23, 0.35);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list .nav-cta::after {
            display: none !important;
        }
        .nav-list .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 160, 23, 0.5);
            background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-primary));
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--clr-text);
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
            z-index: 1001;
        }

        /* ===== Hero Banner ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 11, 26, 0.85), rgba(26, 26, 46, 0.7));
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(212, 160, 23, 0.12), transparent 70%);
            z-index: 0;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .category-hero .hero-content h1 {
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f5d47a, #fff, var(--clr-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero .hero-content p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 640px;
            margin: 0 auto 24px;
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-item .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--clr-primary-light);
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== Guide Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--clr-border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--clr-border);
            box-shadow: var(--shadow-md), var(--shadow-glow);
        }
        .guide-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }
        .guide-card .card-img .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(212, 160, 23, 0.92);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .guide-card .card-body {
            padding: 24px;
        }
        .guide-card .card-body h3 {
            margin-bottom: 8px;
            color: #fff;
            font-size: 1.2rem;
        }
        .guide-card .card-body p {
            font-size: 0.92rem;
            color: var(--clr-text-muted);
            margin-bottom: 16px;
        }
        .guide-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 24px 20px;
            border-top: 1px solid var(--clr-border-light);
            font-size: 0.85rem;
            color: var(--clr-text-muted);
        }
        .guide-card .card-footer .read-more {
            color: var(--clr-primary-light);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-footer .read-more:hover {
            gap: 12px;
        }

        /* ===== Timeline / Process ===== */
        .timeline-section {
            background: var(--clr-bg-alt);
            position: relative;
        }
        .timeline-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--clr-primary), var(--clr-primary-dark), transparent);
        }
        .timeline-item {
            position: relative;
            padding-left: 72px;
            margin-bottom: 40px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item .tl-icon {
            position: absolute;
            left: 12px;
            top: 0;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.15);
            z-index: 1;
        }
        .timeline-item .tl-content h4 {
            color: var(--clr-primary-light);
            margin-bottom: 4px;
            font-size: 1.1rem;
        }
        .timeline-item .tl-content p {
            font-size: 0.92rem;
            color: var(--clr-text-muted);
            margin-bottom: 0;
        }

        /* ===== Highlight / Featured ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .featured-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--clr-border-light);
            transition: var(--transition);
        }
        .featured-item:hover {
            border-color: var(--clr-border);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .featured-item .fi-icon {
            font-size: 2.4rem;
            color: var(--clr-primary-light);
            margin-bottom: 16px;
        }
        .featured-item h4 {
            color: #fff;
            margin-bottom: 8px;
        }
        .featured-item p {
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--clr-border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-border);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            background: transparent;
            transition: var(--transition);
            width: 100%;
            text-align: left;
        }
        .faq-item .faq-q i {
            transition: transform 0.3s ease;
            color: var(--clr-primary-light);
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--clr-text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(212, 160, 23, 0.08), rgba(26, 26, 46, 0.9));
            text-align: center;
            position: relative;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            max-width: 540px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, 0.6);
        }
        .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #fff;
            box-shadow: 0 4px 20px rgba(212, 160, 23, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(212, 160, 23, 0.5);
        }
        .btn-outline {
            background: transparent;
            color: var(--clr-primary-light);
            border: 2px solid var(--clr-primary);
        }
        .btn-outline:hover {
            background: var(--clr-primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-secondary);
            padding: 64px 0 24px;
            border-top: 1px solid var(--clr-border-light);
        }
        .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: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.25);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom .social {
            display: flex;
            gap: 12px;
        }
        .footer-bottom .social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .footer-bottom .social a:hover {
            background: var(--clr-primary);
            color: #fff;
            transform: scale(1.1);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hero-stats {
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: rgba(11, 11, 26, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 80px 32px 40px;
                gap: 20px;
                transition: right 0.4s ease;
                box-shadow: -8px 0 40px rgba(0, 0, 0, 0.6);
                border-left: 1px solid var(--clr-border-light);
                align-items: flex-start;
            }
            .nav-list.open {
                right: 0;
            }
            .nav-list a {
                font-size: 1.1rem;
            }
            .nav-list .nav-cta {
                margin-top: 16px;
                padding: 12px 28px !important;
                font-size: 1rem;
            }
            .category-hero {
                min-height: 340px;
                padding: 100px 20px 60px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stats .stat-item .num {
                font-size: 1.8rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr 1fr;
            }
            .timeline::before {
                left: 18px;
            }
            .timeline-item {
                padding-left: 54px;
            }
            .timeline-item .tl-icon {
                left: 4px;
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
            .section-padding {
                padding: 56px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.3rem;
            }
            .logo i {
                font-size: 1.4rem;
            }
            .category-hero .hero-content h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-content p {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
            .hero-stats .stat-item .num {
                font-size: 1.6rem;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .btn-group {
                flex-direction: column;
            }
            .guide-card .card-body {
                padding: 16px;
            }
            .guide-card .card-footer {
                padding: 12px 16px 16px;
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 14px;
            }
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Stagger animation (optional) ===== */
        .stagger-fade {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp 0.6s ease forwards;
        }
        .stagger-fade:nth-child(1) {
            animation-delay: 0.05s;
        }
        .stagger-fade:nth-child(2) {
            animation-delay: 0.1s;
        }
        .stagger-fade:nth-child(3) {
            animation-delay: 0.15s;
        }
        .stagger-fade:nth-child(4) {
            animation-delay: 0.2s;
        }
        .stagger-fade:nth-child(5) {
            animation-delay: 0.25s;
        }
        .stagger-fade:nth-child(6) {
            animation-delay: 0.3s;
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-border);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-primary-dark);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
    :root {
        --primary: #C9A84C;
        --primary-light: #E8D48B;
        --primary-dark: #A88A2E;
        --accent: #7B2D8E;
        --accent-light: #A54EB8;
        --bg-dark: #0A0A1A;
        --bg-card: #14142A;
        --bg-card-hover: #1C1C3A;
        --bg-elevated: #1A1A32;
        --text-primary: #FFFFFF;
        --text-secondary: rgba(255,255,255,0.85);
        --text-weak: rgba(255,255,255,0.5);
        --border-light: rgba(255,255,255,0.08);
        --border-glow: rgba(201,168,76,0.25);
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
        --shadow-glow: 0 0 40px rgba(201,168,76,0.15);
        --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
        --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
        --container-max: 1200px;
        --header-height: 76px;
    }

    /* ===== 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);
        background: var(--bg-dark);
        color: var(--text-secondary);
        line-height: 1.7;
        font-size: 16px;
        overflow-x: hidden;
    }
    a { color: var(--primary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-light); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { color: var(--text-primary); line-height: 1.3; font-weight: 700; }

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

    /* ===== Header / Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(10,10,26,0.55);
        backdrop-filter: blur(24px) saturate(1.4);
        -webkit-backdrop-filter: blur(24px) saturate(1.4);
        border-bottom: 1px solid var(--border-light);
        transition: var(--transition);
    }
    .site-header.scrolled {
        background: rgba(10,10,26,0.92);
        box-shadow: 0 4px 30px rgba(0,0,0,0.6);
    }
    .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: 12px;
        font-size: 24px;
        font-weight: 800;
        color: var(--text-primary);
        letter-spacing: 1px;
    }
    .logo i {
        color: var(--primary);
        font-size: 28px;
        filter: drop-shadow(0 0 12px rgba(201,168,76,0.4));
    }
    .logo span {
        background: linear-gradient(135deg, var(--primary-light), var(--primary));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .nav-list {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .nav-list a {
        padding: 8px 20px;
        border-radius: 30px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        transition: var(--transition);
        position: relative;
        letter-spacing: 0.3px;
    }
    .nav-list a:hover {
        color: var(--text-primary);
        background: rgba(255,255,255,0.06);
    }
    .nav-list a.active {
        color: var(--primary);
        background: rgba(201,168,76,0.12);
        box-shadow: inset 0 0 0 1px rgba(201,168,76,0.2);
    }
    .nav-list a.nav-cta {
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        color: #0A0A1A;
        font-weight: 700;
        padding: 8px 24px;
        box-shadow: 0 4px 20px rgba(201,168,76,0.3);
        border-radius: 30px;
    }
    .nav-list a.nav-cta:hover {
        transform: translateY(-2px) scale(1.02);
        box-shadow: 0 8px 30px rgba(201,168,76,0.4);
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: #0A0A1A;
    }
    .nav-list a.nav-cta i { margin-right: 6px; }
    .menu-toggle {
        display: none;
        background: none;
        color: var(--text-primary);
        font-size: 26px;
        cursor: pointer;
        padding: 8px;
        border-radius: 8px;
        transition: var(--transition);
    }
    .menu-toggle:hover { background: rgba(255,255,255,0.06); }

    /* ===== Article Banner ===== */
    .article-banner {
        position: relative;
        padding: 140px 0 80px;
        margin-top: var(--header-height);
        min-height: 420px;
        display: flex;
        align-items: center;
        background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        isolation: isolate;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(10,10,26,0.88) 0%, rgba(10,10,26,0.55) 60%, rgba(123,45,142,0.25) 100%);
        z-index: 1;
    }
    .article-banner::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(0deg, var(--bg-dark) 0%, transparent 50%);
        z-index: 1;
    }
    .article-banner .container {
        position: relative;
        z-index: 2;
        width: 100%;
    }
    .article-banner-content {
        max-width: 850px;
    }
    .article-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 6px 18px;
        background: rgba(201,168,76,0.15);
        border: 1px solid rgba(201,168,76,0.3);
        border-radius: 30px;
        color: var(--primary-light);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 24px;
        backdrop-filter: blur(8px);
    }
    .article-badge i { font-size: 14px; }
    .article-banner-content h1 {
        font-size: clamp(28px, 4.5vw, 52px);
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 20px;
        background: linear-gradient(135deg, #FFFFFF 60%, var(--primary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        align-items: center;
        color: var(--text-weak);
        font-size: 14px;
    }
    .article-meta span {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta i { color: var(--primary); opacity: 0.7; }
    .article-meta .meta-category {
        padding: 4px 14px;
        background: rgba(123,45,142,0.2);
        border: 1px solid rgba(123,45,142,0.3);
        border-radius: 20px;
        color: var(--accent-light);
        font-weight: 600;
        font-size: 13px;
    }

    /* ===== Article Body ===== */
    .article-body {
        padding: 60px 0 40px;
        background: var(--bg-dark);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 48px;
        align-items: start;
    }
    .article-main {
        background: var(--bg-card);
        border-radius: var(--radius-lg);
        padding: 48px 40px;
        border: 1px solid var(--border-light);
        box-shadow: var(--shadow-card);
    }
    .article-main .article-content {
        font-size: 16.5px;
        line-height: 1.9;
        color: var(--text-secondary);
    }
    .article-main .article-content p {
        margin-bottom: 20px;
    }
    .article-main .article-content h2 {
        font-size: 24px;
        margin-top: 40px;
        margin-bottom: 16px;
        color: var(--text-primary);
    }
    .article-main .article-content h3 {
        font-size: 20px;
        margin-top: 32px;
        margin-bottom: 12px;
        color: var(--text-primary);
    }
    .article-main .article-content ul,
    .article-main .article-content ol {
        margin-bottom: 20px;
        padding-left: 24px;
    }
    .article-main .article-content li {
        margin-bottom: 8px;
        list-style: disc;
    }
    .article-main .article-content blockquote {
        border-left: 4px solid var(--primary);
        padding: 16px 24px;
        margin: 24px 0;
        background: rgba(201,168,76,0.05);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-secondary);
        font-style: italic;
    }
    .article-main .article-content img {
        border-radius: var(--radius-md);
        margin: 28px 0;
        box-shadow: var(--shadow-card);
    }
    .article-main .article-content a {
        color: var(--primary);
        border-bottom: 1px solid rgba(201,168,76,0.3);
        padding-bottom: 1px;
    }
    .article-main .article-content a:hover {
        border-bottom-color: var(--primary);
        color: var(--primary-light);
    }

    /* ===== Article Sidebar ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 32px;
    }
    .sidebar-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 28px 24px;
        border: 1px solid var(--border-light);
        box-shadow: var(--shadow-card);
    }
    .sidebar-card h3 {
        font-size: 18px;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .sidebar-card h3 i { color: var(--primary); }
    .sidebar-card .info-row {
        display: flex;
        justify-content: space-between;
        padding: 10px 0;
        border-bottom: 1px solid var(--border-light);
        font-size: 14px;
    }
    .sidebar-card .info-row:last-child { border-bottom: none; }
    .sidebar-card .info-row .label { color: var(--text-weak); }
    .sidebar-card .info-row .value { color: var(--text-secondary); font-weight: 500; }
    .sidebar-share {
        display: flex;
        gap: 12px;
        margin-top: 12px;
    }
    .sidebar-share a {
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: rgba(255,255,255,0.06);
        color: var(--text-secondary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        transition: var(--transition);
        border: 1px solid var(--border-light);
    }
    .sidebar-share a:hover {
        background: var(--primary);
        color: #0A0A1A;
        border-color: var(--primary);
        transform: translateY(-3px);
    }

    /* ===== Article Footer ===== */
    .article-footer-bar {
        padding: 40px 0 60px;
        background: var(--bg-dark);
        border-top: 1px solid var(--border-light);
    }
    .article-footer-bar .container {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .article-tags a {
        padding: 6px 16px;
        background: rgba(255,255,255,0.04);
        border: 1px solid var(--border-light);
        border-radius: 20px;
        font-size: 13px;
        color: var(--text-weak);
        transition: var(--transition);
    }
    .article-tags a:hover {
        background: rgba(201,168,76,0.1);
        border-color: rgba(201,168,76,0.3);
        color: var(--primary-light);
    }
    .article-nav-links {
        display: flex;
        gap: 12px;
    }
    .article-nav-links a {
        padding: 8px 20px;
        border-radius: 30px;
        background: rgba(255,255,255,0.04);
        border: 1px solid var(--border-light);
        color: var(--text-secondary);
        font-size: 14px;
        transition: var(--transition);
    }
    .article-nav-links a:hover {
        background: rgba(201,168,76,0.1);
        border-color: rgba(201,168,76,0.3);
        color: var(--primary-light);
    }

    /* ===== Related Posts ===== */
    .related-section {
        padding: 60px 0;
        background: var(--bg-dark);
        border-top: 1px solid var(--border-light);
    }
    .related-section .section-header {
        text-align: center;
        margin-bottom: 44px;
    }
    .related-section .section-header h2 {
        font-size: 32px;
        font-weight: 800;
        background: linear-gradient(135deg, #FFFFFF, var(--primary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .related-section .section-header p {
        color: var(--text-weak);
        margin-top: 8px;
        font-size: 16px;
    }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-light);
        transition: var(--transition);
        box-shadow: var(--shadow-card);
    }
    .related-card:hover {
        transform: translateY(-6px);
        border-color: rgba(201,168,76,0.2);
        box-shadow: 0 16px 48px rgba(0,0,0,0.5);
    }
    .related-card .card-img {
        width: 100%;
        aspect-ratio: 16/10;
        object-fit: cover;
        border-radius: 0;
    }
    .related-card .card-body {
        padding: 18px 20px 22px;
    }
    .related-card .card-body h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 8px;
        line-height: 1.4;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .card-body h4 a {
        color: var(--text-primary);
        transition: var(--transition);
    }
    .related-card .card-body h4 a:hover { color: var(--primary-light); }
    .related-card .card-body .card-meta {
        font-size: 13px;
        color: var(--text-weak);
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-card .card-body .card-meta i { color: var(--primary); opacity: 0.6; }
    .related-card .card-body .card-tag {
        display: inline-block;
        padding: 2px 12px;
        background: rgba(123,45,142,0.15);
        border-radius: 12px;
        font-size: 12px;
        color: var(--accent-light);
        margin-bottom: 10px;
    }

    /* ===== CTA Section ===== */
    .cta-section {
        padding: 80px 0;
        background: linear-gradient(135deg, rgba(123,45,142,0.12), rgba(201,168,76,0.08));
        border-top: 1px solid var(--border-light);
        border-bottom: 1px solid var(--border-light);
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.08;
        z-index: 0;
    }
    .cta-section .container {
        position: relative;
        z-index: 1;
        text-align: center;
    }
    .cta-section h2 {
        font-size: clamp(24px, 3.5vw, 40px);
        font-weight: 800;
        margin-bottom: 16px;
    }
    .cta-section p {
        font-size: 18px;
        color: var(--text-weak);
        max-width: 640px;
        margin: 0 auto 32px;
    }
    .cta-section .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 14px 40px;
        background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        color: #0A0A1A;
        font-weight: 700;
        font-size: 17px;
        border-radius: 40px;
        box-shadow: 0 6px 30px rgba(201,168,76,0.3);
        transition: var(--transition);
        border: none;
        cursor: pointer;
    }
    .cta-section .cta-btn:hover {
        transform: translateY(-3px) scale(1.02);
        box-shadow: 0 12px 40px rgba(201,168,76,0.4);
        background: linear-gradient(135deg, var(--primary), var(--primary-light));
        color: #0A0A1A;
    }

    /* ===== FAQ Section ===== */
    .faq-section {
        padding: 64px 0;
        background: var(--bg-dark);
    }
    .faq-section .section-header {
        text-align: center;
        margin-bottom: 44px;
    }
    .faq-section .section-header h2 {
        font-size: 32px;
        font-weight: 800;
        background: linear-gradient(135deg, #FFFFFF, var(--primary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .faq-section .section-header p {
        color: var(--text-weak);
        margin-top: 8px;
        font-size: 16px;
    }
    .faq-grid {
        max-width: 820px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        padding: 20px 28px;
        transition: var(--transition);
        cursor: pointer;
    }
    .faq-item:hover { border-color: rgba(201,168,76,0.15); }
    .faq-item .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 17px;
        font-weight: 600;
        color: var(--text-primary);
    }
    .faq-item .faq-question i {
        color: var(--primary);
        font-size: 20px;
        transition: var(--transition);
        flex-shrink: 0;
    }
    .faq-item.active .faq-question i { transform: rotate(180deg); }
    .faq-item .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding-top: 16px;
    }

    /* ===== Not Found State ===== */
    .not-found-box {
        text-align: center;
        padding: 60px 24px;
    }
    .not-found-box i {
        font-size: 56px;
        color: var(--text-weak);
        opacity: 0.3;
        margin-bottom: 20px;
    }
    .not-found-box h2 {
        font-size: 28px;
        margin-bottom: 12px;
    }
    .not-found-box p {
        color: var(--text-weak);
        margin-bottom: 24px;
        font-size: 16px;
    }
    .not-found-box .back-home {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 28px;
        background: var(--primary);
        color: #0A0A1A;
        font-weight: 700;
        border-radius: 30px;
        transition: var(--transition);
    }
    .not-found-box .back-home:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
    }

    /* ===== Footer (shared) ===== */
    .site-footer {
        background: #0D0D20;
        border-top: 1px solid var(--border-light);
        padding: 60px 0 30px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.8fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .logo { margin-bottom: 16px; }
    .footer-brand p { font-size: 14px; color: var(--text-weak); line-height: 1.7; max-width: 320px; }
    .footer-col h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 18px;
        color: var(--text-primary);
        letter-spacing: 0.5px;
    }
    .footer-col a {
        display: block;
        padding: 5px 0;
        font-size: 14px;
        color: var(--text-weak);
        transition: var(--transition);
    }
    .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid var(--border-light);
        padding-top: 24px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
    }
    .footer-bottom p { font-size: 13px; color: var(--text-weak); }
    .footer-bottom .social { display: flex; gap: 14px; }
    .footer-bottom .social a {
        width: 36px; height: 36px;
        border-radius: 50%;
        background: rgba(255,255,255,0.04);
        border: 1px solid var(--border-light);
        display: flex; align-items: center; justify-content: center;
        color: var(--text-weak);
        font-size: 16px;
        transition: var(--transition);
    }
    .footer-bottom .social a:hover {
        background: var(--primary);
        color: #0A0A1A;
        border-color: var(--primary);
        transform: translateY(-2px);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .article-layout { grid-template-columns: 1fr; }
        .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .related-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
        .menu-toggle { display: block; }
        .nav-list {
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            background: rgba(10,10,26,0.97);
            backdrop-filter: blur(24px);
            flex-direction: column;
            padding: 20px 24px;
            gap: 6px;
            border-bottom: 1px solid var(--border-light);
            transform: translateY(-120%);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }
        .nav-list.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: all;
        }
        .nav-list a { width: 100%; text-align: center; padding: 12px 20px; font-size: 16px; }
        .nav-list a.nav-cta { margin-top: 8px; }
        .article-banner { padding: 120px 0 60px; min-height: 320px; }
        .article-banner-content h1 { font-size: 26px; }
        .article-main { padding: 28px 20px; }
        .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; }
        .cta-section h2 { font-size: 26px; }
        .article-meta { gap: 12px; font-size: 13px; }
    }

    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .article-banner { padding: 100px 0 40px; min-height: 260px; }
        .article-banner-content h1 { font-size: 22px; }
        .article-main { padding: 20px 16px; border-radius: var(--radius-md); }
        .article-main .article-content { font-size: 15px; }
        .related-section .section-header h2 { font-size: 24px; }
        .faq-section .section-header h2 { font-size: 24px; }
        .cta-section { padding: 48px 0; }
        .cta-section .cta-btn { padding: 12px 28px; font-size: 15px; }
        .sidebar-card { padding: 20px 16px; }
        .article-footer-bar .container { flex-direction: column; align-items: flex-start; }
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .mt-12 { margin-top: 12px; }
    .mb-12 { margin-bottom: 12px; }
    .gap-8 { gap: 8px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }