/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #132240;
            --primary-dark: #060e1a;
            --accent: #f0b90b;
            --accent-hover: #d4a309;
            --accent-light: #fcd34d;
            --text-light: #f8f9fc;
            --text-muted: #9aa8b9;
            --text-body: #e2e8f0;
            --bg-dark: #0d1a2e;
            --bg-card: #111f35;
            --bg-card-hover: #172a45;
            --border-color: rgba(255, 255, 255, 0.06);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.6);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-padding: 1.5rem;
            --section-gap: 5rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        ul {
            padding: 0;
            list-style: none;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--container-padding);
        }

        /* ===== Typography ===== */
        .heading-xl {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            color: var(--text-light);
        }

        .heading-lg {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-light);
        }

        .heading-md {
            font-size: 1.6rem;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-light);
        }

        .heading-sm {
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-light);
        }

        .text-accent {
            color: var(--accent);
        }

        .text-muted-custom {
            color: var(--text-muted);
        }

        /* ===== Buttons ===== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            justify-content: center;
            letter-spacing: 0.01em;
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent), var(--accent-hover));
            color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(240, 185, 11, 0.35);
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(240, 185, 11, 0.5);
            color: var(--primary-dark);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .btn-outline-custom:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .btn-lg-custom {
            padding: 1rem 2.8rem;
            font-size: 1.1rem;
        }

        /* ===== Badge ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(240, 185, 11, 0.15);
            color: var(--accent);
            border: 1px solid rgba(240, 185, 11, 0.2);
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: var(--section-gap) 0;
        }

        .section-padding-top {
            padding-top: var(--section-gap);
        }

        .section-padding-bottom {
            padding-bottom: var(--section-gap);
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: var(--transition);
        }

        .site-header .inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 1.5rem;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .logo span {
            color: var(--accent);
        }
        .logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }

        /* Search — visual center */
        .nav-search {
            flex: 1;
            max-width: 480px;
            margin: 0 1.5rem;
            position: relative;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            padding: 0.6rem 1rem 0.6rem 2.8rem;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            font-size: 0.95rem;
            transition: var(--transition);
            outline: none;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
            opacity: 0.7;
        }
        .nav-search input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.15);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(240, 185, 11, 0.1);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-left: 0.5rem;
        }
        .nav-cta .btn-custom {
            padding: 0.5rem 1.5rem;
            font-size: 0.9rem;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 70px;
            overflow: hidden;
            background: var(--primary-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.5;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.92) 0%, rgba(10, 22, 40, 0.6) 60%, rgba(10, 22, 40, 0.85) 100%);
            z-index: 1;
        }
        .hero .container-custom {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-content {
            max-width: 780px;
            padding: 3rem 0;
        }
        .hero-content .badge-custom {
            margin-bottom: 1.5rem;
        }
        .hero-content .heading-xl {
            margin-bottom: 1.2rem;
        }
        .hero-content .hero-sub {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 2.2rem;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero-stat h3 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 0.2rem;
        }
        .hero-stat p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== Features / 核心优势 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2.5rem 2rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(240, 185, 11, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 1.2rem;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Hot Events / 热门赛事 ===== */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .event-card .event-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .event-card .event-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .event-card:hover .event-img img {
            transform: scale(1.05);
        }
        .event-card .event-img .event-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 0.25rem 0.9rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
        }
        .event-card .event-body {
            padding: 1.5rem 1.5rem 1.8rem;
        }
        .event-card .event-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.4rem;
        }
        .event-card .event-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }
        .event-card .event-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .event-card .event-meta i {
            margin-right: 0.3rem;
        }

        /* ===== News / 资讯列表 (CMS) ===== */
        .news-section {
            background: var(--primary-dark);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 1.5rem 1.8rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .news-card .news-cat {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 0.4rem;
            letter-spacing: 0.03em;
        }
        .news-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.4rem;
            line-height: 1.5;
        }
        .news-card .news-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
            flex: 1;
        }
        .news-card .news-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 0.8rem;
        }
        .news-card .news-footer a {
            color: var(--accent);
            font-weight: 500;
        }
        .news-card .news-footer a:hover {
            color: var(--accent-hover);
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-muted);
            font-size: 1.1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed rgba(255, 255, 255, 0.08);
        }

        /* ===== Stats / 数据见证 ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item h2 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 0.2rem;
        }
        .stat-item p {
            font-size: 1rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(240, 185, 11, 0.15);
        }
        .faq-question {
            padding: 1.2rem 1.8rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            color: var(--text-light);
            font-size: 1rem;
            gap: 1rem;
            user-select: none;
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.8rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            padding: 2rem 0;
        }
        .cta-box .heading-lg {
            margin-bottom: 1rem;
        }
        .cta-box p {
            color: var(--text-muted);
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border-color);
            padding: 3.5rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.8;
        }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 1.2rem;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-stats {
                gap: 1.5rem;
                flex-wrap: wrap;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .events-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 3.5rem;
            }
            .heading-xl {
                font-size: 2.2rem;
            }
            .heading-lg {
                font-size: 1.8rem;
            }
            .heading-md {
                font-size: 1.3rem;
            }

            .site-header .inner {
                height: 60px;
            }
            .nav-search {
                display: none;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1rem 1.5rem 1.5rem;
                border-bottom: 1px solid var(--border-color);
                gap: 0.25rem;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 0.7rem 1rem;
                width: 100%;
            }
            .nav-cta {
                margin-left: auto;
            }
            .nav-cta .btn-custom {
                padding: 0.4rem 1.2rem;
                font-size: 0.85rem;
            }
            .mobile-toggle {
                display: block;
            }

            .hero {
                min-height: 80vh;
                padding-top: 60px;
            }
            .hero-content {
                padding: 2rem 0;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1.2rem;
                margin-top: 2rem;
                padding-top: 1.5rem;
                flex-wrap: wrap;
            }
            .hero-stat h3 {
                font-size: 1.5rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .events-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.2rem;
            }
            .stat-item h2 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box p {
                font-size: 1rem;
            }
            .faq-question {
                padding: 1rem 1.3rem;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 1.3rem 1rem;
            }
        }

        @media (max-width: 520px) {
            .heading-xl {
                font-size: 1.8rem;
            }
            .heading-lg {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-custom {
                width: 100%;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn-custom {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 0.8rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .nav-cta .btn-custom {
                padding: 0.35rem 1rem;
                font-size: 0.8rem;
            }
            .nav-cta .btn-custom span {
                display: none;
            }
        }

        /* ===== Utility ===== */
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.5rem;
        }
        .section-title {
            margin-bottom: 0.6rem;
        }
        .section-desc {
            color: var(--text-muted);
            max-width: 600px;
            font-size: 1.05rem;
            margin-bottom: 2.5rem;
        }
        .text-center-custom {
            text-align: center;
        }
        .mx-auto-custom {
            margin-left: auto;
            margin-right: auto;
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }

/* roulang page: article */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-light: #f8f9fa;
            --bg-dark: #0a1628;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #333;
            --text-muted: #6c757d;
            --text-light: #f0f0f0;
            --border-color: #e9ecef;
            --border-radius: 12px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-width: 1200px;
            --nav-height: 72px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body { font-family: var(--font-family); background: var(--bg-light); color: var(--text-body); line-height: 1.7; font-size: 16px; padding-top: var(--nav-height); }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: var(--secondary); transition: var(--transition); }
        a:hover { color: var(--primary); }
        .container-custom { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }

        /* Header & Navigation */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1050;
            background: rgba(255,255,255,0.97); backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.06);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header .container-custom { display: flex; align-items: center; height: 100%; gap: 20px; }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--text-dark); display: flex; align-items: center; gap: 8px; white-space: nowrap; }
        .logo i { color: var(--primary); font-size: 1.4rem; }
        .logo span { color: var(--primary); }
        .logo:hover { color: var(--text-dark); transform: scale(1.02); }

        .search-wrapper {
            flex: 1; max-width: 480px; position: relative; margin: 0 16px;
        }
        .search-wrapper .form-control {
            height: 44px; border-radius: 50px; border: 2px solid var(--border-color);
            padding-left: 20px; padding-right: 48px; font-size: 0.95rem;
            background: var(--bg-light); transition: var(--transition);
            font-family: var(--font-family);
        }
        .search-wrapper .form-control:focus {
            border-color: var(--primary); box-shadow: 0 0 0 4px rgba(230,57,70,0.12);
            background: #fff;
        }
        .search-wrapper .btn-search {
            position: absolute; right: 4px; top: 4px; bottom: 4px;
            width: 40px; border-radius: 50%; border: none;
            background: var(--primary); color: #fff;
            display: flex; align-items: center; justify-content: center;
            transition: var(--transition); cursor: pointer;
        }
        .search-wrapper .btn-search:hover { background: var(--primary-dark); transform: scale(1.05); }

        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px; border-radius: 50px; font-size: 0.9rem;
            font-weight: 500; color: var(--text-body); white-space: nowrap;
            transition: var(--transition); position: relative;
        }
        .nav-links a:hover { background: rgba(230,57,70,0.08); color: var(--primary); }
        .nav-links a.active { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 4px 14px rgba(230,57,70,0.30); }
        .nav-links a.active:hover { background: var(--primary-dark); color: #fff; }

        .nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--text-dark); cursor: pointer; padding: 4px 8px; border-radius: 8px; }

        /* Mobile Nav */
        .mobile-nav-overlay {
            display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5);
            z-index: 1060; opacity: 0; transition: opacity 0.3s;
        }
        .mobile-nav-overlay.show { opacity: 1; }
        .mobile-nav-panel {
            position: fixed; top: 0; left: 0; bottom: 0; width: 300px;
            background: #fff; z-index: 1070; padding: 24px;
            transform: translateX(-100%); transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
            box-shadow: var(--shadow-lg); overflow-y: auto;
        }
        .mobile-nav-panel.show { transform: translateX(0); }
        .mobile-nav-panel .close-btn { background: none; border: none; font-size: 1.8rem; color: var(--text-dark); cursor: pointer; margin-bottom: 24px; }
        .mobile-nav-panel a {
            display: block; padding: 14px 16px; border-radius: 12px;
            font-size: 1rem; font-weight: 500; color: var(--text-body);
            transition: var(--transition); border: 1px solid transparent;
        }
        .mobile-nav-panel a:hover { background: rgba(230,57,70,0.06); color: var(--primary); border-color: var(--border-color); }
        .mobile-nav-panel a.active { background: var(--primary); color: #fff; }

        /* Article Hero */
        .article-hero {
            position: relative; padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            overflow: hidden; min-height: 320px;
            display: flex; align-items: center;
        }
        .article-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.25; z-index: 0;
        }
        .article-hero::after {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(230,57,70,0.15) 0%, transparent 70%);
            z-index: 1;
        }
        .article-hero .container-custom { position: relative; z-index: 2; width: 100%; }
        .article-hero .breadcrumb-custom {
            display: flex; align-items: center; gap: 8px; font-size: 0.85rem;
            color: rgba(255,255,255,0.6); margin-bottom: 20px; flex-wrap: wrap;
        }
        .article-hero .breadcrumb-custom a { color: rgba(255,255,255,0.7); }
        .article-hero .breadcrumb-custom a:hover { color: #fff; }
        .article-hero .breadcrumb-custom .sep { color: rgba(255,255,255,0.4); }
        .article-hero h1 {
            font-size: 2.6rem; font-weight: 800; color: #fff; line-height: 1.25;
            margin-bottom: 16px; max-width: 860px; text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-hero .meta-bar {
            display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
            color: rgba(255,255,255,0.75); font-size: 0.9rem;
        }
        .article-hero .meta-bar i { margin-right: 6px; }
        .article-hero .meta-bar .badge-custom {
            display: inline-block; padding: 4px 16px; border-radius: 50px;
            background: rgba(230,57,70,0.85); color: #fff; font-size: 0.8rem;
            font-weight: 600; letter-spacing: 0.5px;
        }

        /* Article Content */
        .article-main { padding: 50px 0 70px; }
        .article-wrapper {
            max-width: 860px; margin: 0 auto;
            background: #fff; border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-md); padding: 48px 56px;
        }
        .article-wrapper .content-body {
            font-size: 1.05rem; line-height: 1.9; color: var(--text-body);
        }
        .article-wrapper .content-body p { margin-bottom: 1.4em; }
        .article-wrapper .content-body h2, .article-wrapper .content-body h3 {
            color: var(--text-dark); font-weight: 700; margin-top: 1.8em; margin-bottom: 0.6em;
        }
        .article-wrapper .content-body h2 { font-size: 1.6rem; }
        .article-wrapper .content-body h3 { font-size: 1.25rem; }
        .article-wrapper .content-body ul, .article-wrapper .content-body ol { padding-left: 1.5em; margin-bottom: 1.4em; }
        .article-wrapper .content-body li { margin-bottom: 0.4em; }
        .article-wrapper .content-body a { color: var(--primary); text-decoration: underline; }
        .article-wrapper .content-body a:hover { color: var(--primary-dark); }
        .article-wrapper .content-body img { border-radius: var(--border-radius); margin: 1.2em 0; box-shadow: var(--shadow-sm); }
        .article-wrapper .content-body blockquote {
            border-left: 4px solid var(--primary); padding: 16px 24px; margin: 1.4em 0;
            background: rgba(230,57,70,0.04); border-radius: 0 var(--border-radius) var(--border-radius) 0;
            font-style: italic; color: var(--text-muted);
        }

        .article-not-found {
            text-align: center; padding: 80px 20px;
        }
        .article-not-found .icon-lg { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found .btn-back {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 12px 32px; border-radius: 50px;
            background: var(--primary); color: #fff; font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.30); }

        /* Related Section */
        .related-section { padding: 60px 0; background: var(--bg-light); }
        .related-section .section-title {
            font-size: 1.8rem; font-weight: 700; color: var(--text-dark);
            margin-bottom: 36px; text-align: center;
        }
        .related-section .section-title span { color: var(--primary); }
        .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .related-card {
            background: #fff; border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border-color);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
        .related-card .card-img {
            height: 180px; background: var(--secondary); position: relative; overflow: hidden;
        }
        .related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .related-card:hover .card-img img { transform: scale(1.05); }
        .related-card .card-body { padding: 20px 24px 24px; }
        .related-card .card-body h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
        .related-card .card-body h3 a { color: var(--text-dark); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .meta-sm { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 12px; }

        /* CTA Section */
        .cta-section {
            padding: 70px 0; background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a4a 100%);
            position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: radial-gradient(ellipse at 80% 50%, rgba(230,57,70,0.12) 0%, transparent 70%);
        }
        .cta-section .container-custom { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { font-size: 2.2rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.75); max-width: 640px; margin: 0 auto 32px; }
        .cta-section .btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .cta-section .btn-cta-primary {
            padding: 14px 40px; border-radius: 50px; font-weight: 600;
            background: var(--primary); color: #fff; border: none;
            transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
        }
        .cta-section .btn-cta-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-3px); box-shadow: 0 12px 32px rgba(230,57,70,0.35); }
        .cta-section .btn-cta-secondary {
            padding: 14px 40px; border-radius: 50px; font-weight: 600;
            background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition); display: inline-flex; align-items: center; gap: 8px;
        }
        .cta-section .btn-cta-secondary:hover { border-color: var(--primary); color: #fff; transform: translateY(-3px); }

        /* Footer */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 0; border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #fff; font-size: 1.3rem; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--primary); }
        .footer-brand .logo span { color: var(--primary); }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 320px; }
        .footer-col h5 { color: #fff; font-weight: 600; font-size: 1rem; margin-bottom: 20px; letter-spacing: 0.3px; }
        .footer-col a { display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem; padding: 5px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 20px 0; display: flex; justify-content: space-between;
            align-items: center; flex-wrap: wrap; gap: 12px;
            font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary); }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .article-wrapper { padding: 40px 36px; }
        }
        @media (max-width: 991px) {
            .nav-links { display: none; }
            .nav-toggle { display: block; }
            .mobile-nav-overlay, .mobile-nav-panel { display: block; }
            .search-wrapper { max-width: 320px; }
        }
        @media (max-width: 768px) {
            body { font-size: 15px; }
            .article-hero { padding: 40px 0 32px; min-height: 240px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .meta-bar { gap: 12px; font-size: 0.8rem; }
            .article-wrapper { padding: 28px 20px; border-radius: var(--border-radius); }
            .article-wrapper .content-body { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .related-section .section-title { font-size: 1.4rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 0.95rem; }
            .search-wrapper { max-width: 200px; }
            .search-wrapper .form-control { padding-left: 14px; font-size: 0.85rem; }
            .article-hero h1 { font-size: 1.6rem; }
        }
        @media (max-width: 520px) {
            .site-header .container-custom { gap: 10px; }
            .logo { font-size: 1.2rem; }
            .logo i { font-size: 1.1rem; }
            .search-wrapper { max-width: 140px; }
            .search-wrapper .form-control { height: 38px; font-size: 0.8rem; padding-left: 12px; padding-right: 38px; }
            .search-wrapper .btn-search { width: 34px; }
            .article-hero h1 { font-size: 1.4rem; }
            .article-wrapper { padding: 20px 16px; }
            .article-wrapper .content-body { font-size: 0.95rem; }
            .cta-section .btn-cta-primary, .cta-section .btn-cta-secondary { width: 100%; justify-content: center; }
        }
        @media (min-width: 992px) {
            .mobile-nav-overlay, .mobile-nav-panel { display: none !important; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --accent: #f4a261;
            --bg-dark: #0b1a2e;
            --bg-darker: #07101e;
            --bg-light: #f8f9fa;
            --bg-white: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #7a7a9a;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: rgba(255, 255, 255, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.25);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --header-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-light);
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border-radius: var(--radius-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 0.5em;
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2.2rem;
        }
        h3 {
            font-size: 1.6rem;
        }
        h4 {
            font-size: 1.25rem;
        }
        h5 {
            font-size: 1rem;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }
        .text-light-custom {
            color: var(--text-light);
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.25rem;
            }
        }

        /* ===== Buttons ===== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 36px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.2;
            white-space: nowrap;
        }
        .btn-custom:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.45);
        }
        .btn-primary-custom:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(230, 57, 70, 0.3);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.25);
        }
        .btn-outline-custom:active {
            transform: translateY(0);
        }
        .btn-light-custom {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .btn-light-custom:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm-custom {
            padding: 10px 24px;
            font-size: 0.875rem;
        }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary);
            border: 1px solid rgba(230, 57, 70, 0.2);
            letter-spacing: 0.3px;
        }
        .badge-custom-light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: all var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .card-custom .card-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .card-custom h4 {
            margin-bottom: 8px;
        }
        .card-custom p {
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        .card-dark {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(8px);
        }
        .card-dark h4,
        .card-dark p {
            color: #fff;
        }
        .card-dark .card-icon {
            color: var(--accent);
        }
        .card-dark:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .card-feature {
            text-align: center;
            padding: 36px 28px;
        }
        .card-feature .card-icon {
            font-size: 2.4rem;
            margin-bottom: 20px;
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 48px 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .section-padding-sm {
                padding: 32px 0;
            }
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
        }
        .section-title p {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-light);
            font-size: 1.05rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(11, 26, 46, 0.92);
            backdrop-filter: blur(20px) saturate(1.4);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background var(--transition);
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.8rem;
        }
        .logo span {
            color: var(--primary);
        }
        .logo:hover {
            color: #fff;
            opacity: 0.92;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 8px;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            border-radius: 50px;
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.10);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 50px;
            padding: 6px 6px 6px 18px;
            min-width: 200px;
            transition: all var(--transition);
            flex-shrink: 1;
            max-width: 280px;
        }
        .nav-search:focus-within {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.15);
        }
        .nav-search input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 6px 0;
            font-size: 0.9rem;
            width: 100%;
            outline: none;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .nav-search button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background var(--transition);
            flex-shrink: 0;
        }
        .nav-search button:hover {
            background: var(--primary-dark);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: transparent;
            border: none;
            outline: none;
            z-index: 1060;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: all 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);
        }

        /* Mobile Nav Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(7, 16, 30, 0.97);
            backdrop-filter: blur(12px);
            z-index: 1040;
            padding: 40px 24px;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            overflow-y: auto;
            opacity: 0;
            transition: opacity 0.35s ease;
        }
        .mobile-nav-overlay.open {
            display: flex;
            opacity: 1;
        }
        .mobile-nav-overlay a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.2rem;
            font-weight: 500;
            padding: 14px 24px;
            border-radius: 50px;
            width: 100%;
            max-width: 320px;
            text-align: center;
            transition: all var(--transition);
            text-decoration: none;
        }
        .mobile-nav-overlay a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav-overlay a.active {
            color: #fff;
            background: var(--primary);
        }
        .mobile-nav-overlay .nav-search-mobile {
            width: 100%;
            max-width: 320px;
            margin-top: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 50px;
            padding: 6px 6px 6px 18px;
        }
        .mobile-nav-overlay .nav-search-mobile input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 10px 0;
            font-size: 1rem;
            width: 100%;
            outline: none;
        }
        .mobile-nav-overlay .nav-search-mobile input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .mobile-nav-overlay .nav-search-mobile button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        @media (max-width: 992px) {
            .nav-links,
            .nav-search {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .site-header .container-custom {
                gap: 12px;
            }
        }

        @media (min-width: 993px) {
            .mobile-nav-overlay {
                display: none !important;
            }
        }

        /* ===== Hero / Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-darker);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
            padding: 120px 0 80px;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 16, 30, 0.85) 0%, rgba(11, 26, 46, 0.70) 100%);
            z-index: 1;
        }
        .hero-banner .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .hero-banner .badge-custom {
            margin-bottom: 20px;
        }
        .hero-banner h1 {
            color: #fff;
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-banner h1 span {
            color: var(--primary);
        }
        .hero-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.15rem;
            max-width: 640px;
            margin: 0 auto 32px;
        }
        .hero-banner .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .hero-banner {
                min-height: 420px;
                padding: 100px 0 56px;
            }
            .hero-banner h1 {
                font-size: 2rem;
            }
            .hero-banner p {
                font-size: 1rem;
            }
            .hero-banner .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Stats Counter ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 24px 12px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-2px);
        }
        .stat-item .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-item .stat-number span {
            color: var(--primary);
        }
        .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
        }

        /* ===== Features / Cards Grid ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 992px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Process / Steps ===== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .step-item h4 {
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        @media (max-width: 992px) {
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .steps-row {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .scenario-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .scenario-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .scenario-card .scenario-icon {
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
            width: 48px;
            text-align: center;
        }
        .scenario-card h4 {
            margin-bottom: 4px;
        }
        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
            transition: color var(--transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        @media (max-width: 576px) {
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 16, 30, 0.88) 0%, rgba(11, 26, 46, 0.78) 100%);
            z-index: 1;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.4rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            max-width: 320px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-col a i {
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-bottom span {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            padding: 12px 0;
            background: rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .breadcrumb-bar .container-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .breadcrumb-bar a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
        }
        .breadcrumb-bar a:hover {
            color: #fff;
        }
        .breadcrumb-bar span {
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb-bar i {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.3);
        }

        /* ===== Dark Section Common ===== */
        .section-dark {
            background: var(--bg-dark);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }
        .section-dark p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Misc ===== */
        .text-accent {
            color: var(--accent);
        }
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-gradient-custom {
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
        }

        .divider-custom {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0 auto 16px;
        }

        /* ===== Responsive tweaks ===== */
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .hero-banner h1 {
                font-size: 1.7rem;
            }
            .btn-custom {
                padding: 12px 28px;
                font-size: 0.9rem;
                white-space: normal;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .stat-item {
                padding: 16px 8px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }