/* roulang page: index */
:root {
            --primary: #1a2744;
            --primary-light: #243356;
            --accent: #c8944a;
            --accent-hover: #d4a85e;
            --accent-light: #f5ecd7;
            --bg: #fafaf9;
            --bg-warm: #f5f2ec;
            --card-bg: #ffffff;
            --text: #1c1917;
            --text-secondary: #4a4540;
            --text-muted: #78716c;
            --border: #e7e5e4;
            --border-light: #f0ede8;
            --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.06);
            --shadow: 0 4px 16px rgba(28, 25, 23, 0.08);
            --shadow-md: 0 8px 32px rgba(28, 25, 23, 0.1);
            --shadow-lg: 0 16px 48px rgba(28, 25, 23, 0.12);
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing: 1.5rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --max-width: 1280px;
            --nav-height: 72px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-xs);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 var(--spacing);
            }
            :root {
                --nav-height: 60px;
            }
        }

        /* ========== HEADER / NAV ========== */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            background: rgba(255, 255, 255, 0.95);
        }

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

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            flex-shrink: 0;
            white-space: nowrap;
        }
        .logo-brand i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .logo-brand span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo-brand a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        nav.main-nav {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }
        nav.main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.4rem 0;
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition);
        }
        nav.main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: var(--accent);
            border-radius: 4px;
            transition: width var(--transition);
        }
        nav.main-nav a:hover {
            color: var(--primary);
        }
        nav.main-nav a:hover::after {
            width: 100%;
        }
        nav.main-nav a.active {
            color: var(--accent);
            font-weight: 600;
        }
        nav.main-nav a.active::after {
            width: 100%;
            background: var(--accent);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }
        .btn-nav {
            padding: 0.55rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.03em;
            box-shadow: 0 2px 8px rgba(200, 148, 74, 0.3);
            white-space: nowrap;
        }
        .btn-nav:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(200, 148, 74, 0.4);
            transform: translateY(-1px);
        }
        .btn-nav:active {
            transform: scale(0.97);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            font-size: 1.5rem;
            color: var(--text);
            padding: 0.4rem;
            border-radius: var(--radius-xs);
        }

        @media (max-width: 1024px) {
            nav.main-nav {
                gap: 1.2rem;
            }
            nav.main-nav a {
                font-size: 0.88rem;
            }
            .btn-nav {
                padding: 0.5rem 1.1rem;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            nav.main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                gap: 0;
                padding: var(--spacing) var(--spacing-md);
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 999;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            nav.main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            nav.main-nav a {
                padding: 0.8rem 0;
                font-size: 1rem;
                border-bottom: 1px solid var(--border-light);
                width: 100%;
                text-align: center;
            }
            nav.main-nav a:last-child {
                border-bottom: none;
            }
            .nav-cta {
                gap: 0.5rem;
            }
            .btn-nav {
                padding: 0.45rem 1rem;
                font-size: 0.78rem;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1a2744 0%, #1e3050 30%, #1a2744 70%, #152036 100%);
            overflow: hidden;
            isolation: isolate;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(200, 148, 74, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 40%, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: var(--spacing);
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(200, 148, 74, 0.18);
            border: 1px solid rgba(200, 148, 74, 0.35);
            color: #f0d78c;
            padding: 0.45rem 1.2rem;
            border-radius: 50px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            font-size: 0.75rem;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .hero-title {
            font-size: clamp(2.2rem, 4.5vw, 3.6rem);
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            letter-spacing: 0.04em;
            max-width: 700px;
        }
        .hero-title .accent-text {
            color: #e2b96f;
            position: relative;
        }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            line-height: 1.8;
            letter-spacing: 0.02em;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .btn-primary {
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.04em;
            box-shadow: 0 6px 24px rgba(200, 148, 74, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all var(--transition);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 10px 32px rgba(200, 148, 74, 0.5);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-outline-light {
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            letter-spacing: 0.04em;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all var(--transition);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 0.5rem;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #e2b96f;
            letter-spacing: 0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.03em;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding: var(--spacing-lg) 0;
            }
            .hero-section .container {
                gap: var(--spacing-sm);
            }
            .hero-stats-row {
                gap: 1.5rem;
            }
            .hero-stat .stat-num {
                font-size: 1.5rem;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 0.7rem 1.6rem;
                font-size: 0.9rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 0.5rem;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-top: 0.6rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section-header {
                margin-bottom: var(--spacing-md);
            }
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-light);
            padding: var(--spacing-md) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            text-align: center;
        }
        .stat-card {
            padding: var(--spacing) var(--spacing-sm);
            border-radius: var(--radius);
            background: var(--bg-warm);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 0.5rem;
        }
        .stat-card .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .stat-card .stat-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .stat-card .stat-value {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
        }

        /* ========== ADVANTAGES ========== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .advantage-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }
        .advantage-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--accent-light);
        }
        .advantage-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto var(--spacing-sm);
            transition: all var(--transition);
        }
        .advantage-card:hover .advantage-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }
        .advantage-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.5rem;
            letter-spacing: 0.03em;
        }
        .advantage-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            aspect-ratio: 3/4;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            isolation: isolate;
            cursor: pointer;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .category-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            border-radius: var(--radius-lg);
            transition: transform 0.5s ease;
        }
        .category-card:hover img {
            transform: scale(1.08);
        }
        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 39, 68, 0.9) 0%, rgba(26, 39, 68, 0.3) 50%, transparent 100%);
            z-index: 1;
            border-radius: var(--radius-lg);
        }
        .category-card .card-content {
            position: relative;
            z-index: 2;
            padding: var(--spacing-md) var(--spacing);
            color: #fff;
        }
        .category-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            letter-spacing: 0.04em;
            margin-bottom: 0.6rem;
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 0.3rem;
        }
        .category-card p {
            font-size: 0.82rem;
            opacity: 0.85;
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing);
            }
            .category-card {
                aspect-ratio: 16/10;
            }
        }

        /* ========== BRAND STORY ========== */
        .brand-story-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .brand-story-image {
            position: relative;
            min-height: 420px;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-xl) 0 0 var(--radius-xl);
            overflow: hidden;
        }
        .brand-story-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 39, 68, 0.15) 0%, transparent 60%);
        }
        .brand-story-text {
            padding: var(--spacing-xl) var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing);
        }
        .brand-story-text h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            line-height: 1.3;
        }
        .brand-story-text .story-para {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.85;
            letter-spacing: 0.02em;
        }
        .brand-story-text .story-highlight {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .brand-story-block {
                grid-template-columns: 1fr;
            }
            .brand-story-image {
                min-height: 260px;
                border-radius: var(--radius-xl) var(--radius-xl) 0 0;
            }
            .brand-story-text {
                padding: var(--spacing-md) var(--spacing);
            }
        }

        /* ========== TOURNAMENT / SERVICE ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--accent-light);
        }
        .service-card .service-img-wrap {
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .service-card .service-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: transform 0.4s ease;
        }
        .service-card:hover .service-img-wrap img {
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .service-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .service-card .service-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.03em;
        }
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .testimonial-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--accent-light);
            margin-bottom: 0.5rem;
            opacity: 0.7;
        }
        .testimonial-card .quote-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-sm);
        }
        .testimonial-card .user-info {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .user-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .user-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
        }
        .user-role {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        @media (max-width: 768px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            padding: var(--spacing) var(--spacing-md);
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            letter-spacing: 0.02em;
            cursor: pointer;
            border: none;
            outline: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 var(--spacing-md);
            background: var(--bg-warm);
            border-top: 1px solid transparent;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: var(--spacing) var(--spacing-md);
            border-top-color: var(--border-light);
        }
        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            letter-spacing: 0.02em;
        }
        @media (max-width: 520px) {
            .faq-question {
                font-size: 0.9rem;
                padding: var(--spacing-sm) var(--spacing);
            }
            .faq-answer p {
                font-size: 0.85rem;
            }
        }

        /* ========== NEWS ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-card .news-img {
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-img img {
            transform: scale(1.06);
        }
        .news-card .news-body {
            padding: var(--spacing);
        }
        .news-card .news-date {
            font-size: 0.78rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 0.4rem;
        }
        .news-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 0.4rem;
            letter-spacing: 0.02em;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
        }
        .news-card .btn-read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            transition: gap var(--transition);
        }
        .news-card .btn-read-more:hover {
            gap: 0.6rem;
            color: var(--accent-hover);
        }
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #1a2744 100%);
            position: relative;
            isolation: isolate;
            overflow: hidden;
            padding: var(--spacing-2xl) 0;
        }
        .cta-bg-pattern {
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing);
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            max-width: 560px;
            line-height: 1.8;
            font-size: 1rem;
        }
        .cta-section .btn-primary {
            font-size: 1.05rem;
            padding: 0.9rem 2.6rem;
        }

        /* ========== FOOTER ========== */
        footer.site-footer {
            background: #141a25;
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            border-top: 4px solid var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .logo-brand {
            color: #fff;
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
        }
        .footer-brand .logo-brand span {
            background: linear-gradient(135deg, #e2b96f 0%, #f0d78c 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            opacity: 0.75;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
            letter-spacing: 0.02em;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing);
            text-align: center;
            font-size: 0.82rem;
            opacity: 0.6;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: auto;
            }
        }

        /* ========== PARTNERS ========== */
        .partners-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 2.5rem;
            padding: var(--spacing) 0;
            opacity: 0.6;
            filter: grayscale(0.3);
        }
        .partner-item {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .partner-item:hover {
            color: var(--accent);
        }
        @media (max-width: 520px) {
            .partners-row {
                gap: 1.5rem;
            }
            .partner-item {
                font-size: 0.9rem;
            }
        }

        /* Utility */
        .bg-warm {
            background: var(--bg-warm);
        }
        .text-center {
            text-align: center;
        }

/* roulang page: category3 */
:root {
            --color-primary: #8B1A1A;
            --color-primary-dark: #6B1010;
            --color-primary-light: #A52A2A;
            --color-accent: #D4A84B;
            --color-accent-light: #E8C97A;
            --color-accent-dark: #B8922F;
            --color-bg: #F9F7F2;
            --color-bg-alt: #F2EDE0;
            --color-bg-dark: #1A1A1A;
            --color-bg-card: #FFFFFF;
            --color-text: #2C2C2C;
            --color-text-light: #5A5A5A;
            --color-text-muted: #888888;
            --color-text-inverse: #F5F5F5;
            --color-border: #E5DDD0;
            --color-border-light: #F0EBE0;
            --color-success: #2D8B4E;
            --color-warning: #C2781A;
            --color-danger: #B53434;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.13);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.10);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'STSong', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1200px;
            --header-height: 68px;
            --section-gap: 64px;
            --section-gap-lg: 80px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea {
            font-family: inherit;
        }

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

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .logo-brand i {
            font-size: 1.5rem;
            color: var(--color-accent);
        }

        .logo-brand span {
            font-family: var(--font-display);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.015em;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(139, 26, 26, 0.04);
        }

        .main-nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(139, 26, 26, 0.07);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .nav-cta-btn {
            display: inline-flex !important;
            align-items: center;
            gap: 6px;
            padding: 9px 20px !important;
            background: var(--color-primary) !important;
            color: #fff !important;
            border-radius: var(--radius-md) !important;
            font-weight: 600 !important;
            transition: all var(--transition-fast) !important;
            font-size: 0.9rem !important;
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-dark) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .nav-cta-btn i {
            font-size: 0.85rem;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-bg-alt);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #1A0A0A 0%, #2D1010 35%, #3D1515 70%, #1A0A0A 100%);
            min-height: 280px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
        }

        .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px 50px;
            color: #fff;
            max-width: 800px;
            margin: 0 auto;
        }

        .banner-badge {
            display: inline-block;
            background: rgba(212, 168, 75, 0.2);
            border: 1px solid rgba(212, 168, 75, 0.4);
            color: var(--color-accent-light);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }

        .banner-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            font-family: var(--font-display);
            letter-spacing: 0.03em;
            line-height: 1.25;
        }

        .banner-content .banner-subtitle {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            max-width: 600px;
            margin: 0 auto;
        }

        .banner-accent-line {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 16px auto;
        }

        /* ========== MAIN CONTENT ========== */
        .page-main {
            flex: 1;
            padding-bottom: var(--section-gap-lg);
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 700;
            color: var(--color-text);
            font-family: var(--font-display);
            letter-spacing: 0.02em;
            margin-bottom: 8px;
        }

        .section-header .section-desc {
            color: var(--color-text-light);
            font-size: 0.95rem;
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ========== GUIDE FILTER TAGS ========== */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 36px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-light);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.015em;
        }

        .filter-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            background: rgba(212, 168, 75, 0.06);
        }

        .filter-tag.active-tag {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }

        .filter-tag i {
            font-size: 0.8rem;
        }

        /* ========== FEATURED GUIDES ========== */
        .featured-guides-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }

        .guide-card-featured {
            background: var(--color-bg-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .guide-card-featured:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-accent-light);
        }

        .guide-card-featured .card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .guide-card-featured .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .guide-card-featured:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .guide-card-featured .card-img-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .card-level-badge {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .badge-beginner {
            background: rgba(45, 139, 78, 0.85);
            color: #fff;
        }

        .badge-intermediate {
            background: rgba(194, 120, 26, 0.85);
            color: #fff;
        }

        .badge-advanced {
            background: rgba(181, 52, 52, 0.85);
            color: #fff;
        }

        .guide-card-featured .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card-featured .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .guide-card-featured .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .guide-card-featured h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
            letter-spacing: 0.015em;
        }

        .guide-card-featured .card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .guide-card-featured .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
        }

        .guide-card-featured .card-link:hover {
            gap: 10px;
            color: var(--color-primary-dark);
        }

        .guide-card-featured .card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .guide-card-featured .card-link:hover i {
            transform: translateX(3px);
        }

        /* ========== GUIDE LIST COMPACT ========== */
        .guide-list-compact {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .guide-card-compact {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }

        .guide-card-compact:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-accent-light);
        }

        .guide-card-compact .card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }

        .guide-card-compact .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .guide-card-compact:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .guide-card-compact .card-body {
            padding: 16px 18px 18px;
        }

        .guide-card-compact .card-level-badge {
            position: absolute;
            top: 10px;
            left: 10px;
        }

        .guide-card-compact h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

        .guide-card-compact .card-excerpt {
            font-size: 0.82rem;
            color: var(--color-text-light);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .guide-card-compact .card-meta {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            display: flex;
            gap: 12px;
        }

        /* ========== TIPS SECTION ========== */
        .tips-section {
            background: var(--color-bg-alt);
            border-radius: var(--radius-2xl);
            padding: 48px 40px;
            margin-top: 40px;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .tip-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

        .tip-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-light);
        }

        .tip-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }

        .tip-icon.amber {
            background: rgba(212, 168, 75, 0.15);
            color: var(--color-accent-dark);
        }

        .tip-icon.red {
            background: rgba(139, 26, 26, 0.1);
            color: var(--color-primary);
        }

        .tip-icon.green {
            background: rgba(45, 139, 78, 0.1);
            color: var(--color-success);
        }

        .tip-icon.blue {
            background: rgba(30, 90, 160, 0.1);
            color: #1E5AA0;
        }

        .tip-content h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 4px;
            letter-spacing: 0.01em;
        }

        .tip-content p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            line-height: 1.55;
        }

        /* ========== VIDEO TUTORIAL BLOCK ========== */
        .tutorial-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-top: 40px;
        }

        .tutorial-visual {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            box-shadow: var(--shadow-lg);
        }

        .tutorial-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .tutorial-visual .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-primary);
            box-shadow: var(--shadow-lg);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .tutorial-visual .play-btn:hover {
            background: #fff;
            transform: translate(-50%, -50%) scale(1.08);
            box-shadow: var(--shadow-xl);
        }

        .tutorial-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
        }

        .tutorial-info p {
            font-size: 0.95rem;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .tutorial-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .tutorial-stat {
            text-align: center;
        }

        .tutorial-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .tutorial-stat .stat-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: #fff;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-2xl);
            padding: 52px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin-top: 52px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: soft-light;
        }

        .cta-section>* {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            font-family: var(--font-display);
            letter-spacing: 0.03em;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 520px;
            margin: 0 auto 22px;
            line-height: 1.6;
        }

        .cta-section .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: var(--color-accent);
            color: #1A0A0A;
            border-radius: var(--radius-lg);
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
            border: none;
        }

        .cta-section .btn-cta-large:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 168, 75, 0.35);
            color: #1A0A0A;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            color: #ccc;
            padding: 48px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-brand {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        .footer-brand .logo-brand i {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 0.85rem;
            color: #aaa;
            line-height: 1.6;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.85rem;
            color: #aaa;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.8rem;
            color: #888;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .featured-guides-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-list-compact {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .tips-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .tutorial-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .banner-content h1 {
                font-size: 2rem;
            }
            .tips-section {
                padding: 36px 24px;
            }
            .cta-section {
                padding: 40px 28px;
            }
            .cta-section h2 {
                font-size: 1.45rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-md);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                z-index: 999;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .banner-content h1 {
                font-size: 1.7rem;
            }
            .banner-content .banner-subtitle {
                font-size: 0.9rem;
            }
            .page-banner {
                min-height: 220px;
            }
            .guide-list-compact {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .filter-tags {
                gap: 8px;
            }
            .filter-tag {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .section {
                padding-top: 40px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-xl);
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .tips-section {
                padding: 28px 16px;
                border-radius: var(--radius-xl);
            }
            .tutorial-stats {
                gap: 18px;
            }
            .tutorial-stat .stat-num {
                font-size: 1.4rem;
            }
            .guide-card-featured h3 {
                font-size: 1.05rem;
            }
            .guide-card-featured .card-body {
                padding: 16px 16px 18px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .banner-content {
                padding: 40px 14px 32px;
            }
            .banner-content h1 {
                font-size: 1.4rem;
            }
            .banner-content .banner-subtitle {
                font-size: 0.82rem;
            }
            .banner-badge {
                font-size: 0.75rem;
                padding: 5px 12px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .guide-card-featured .card-body {
                padding: 14px;
            }
            .tip-item {
                padding: 16px;
                gap: 10px;
            }
            .tip-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                padding: 6px 11px;
                font-size: 0.78rem;
            }
            .cta-section .btn-cta-large {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .btn-primary {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #c7923e;
            --color-primary-dark: #a6782e;
            --color-primary-light: #e0b865;
            --color-accent: #d4443b;
            --color-accent-dark: #b8352e;
            --color-bg: #f9f7f2;
            --color-bg-alt: #f2efe7;
            --color-bg-dark: #1c1814;
            --color-bg-dark-alt: #25201a;
            --color-surface: #ffffff;
            --color-text: #2c2420;
            --color-text-soft: #5c5248;
            --color-text-light: #8a7e72;
            --color-text-on-dark: #e8e2d6;
            --color-text-on-dark-soft: #b8afa0;
            --color-border: #e5ded2;
            --color-border-light: #f0ebe0;
            --color-success: #3a8a5c;
            --color-warning: #d4852a;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(28, 24, 20, 0.06);
            --shadow-sm: 0 2px 8px rgba(28, 24, 20, 0.08);
            --shadow: 0 4px 16px rgba(28, 24, 20, 0.10);
            --shadow-md: 0 8px 28px rgba(28, 24, 20, 0.13);
            --shadow-lg: 0 14px 40px rgba(28, 24, 20, 0.16);
            --shadow-xl: 0 20px 56px rgba(28, 24, 20, 0.20);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --container-max: 1200px;
            --container-padding: 24px;
            --header-height: 68px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.40s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 28px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-text);
            white-space: nowrap;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .logo-brand i {
            font-size: 1.6rem;
            color: var(--color-primary);
            transition: transform var(--transition);
        }

        .logo-brand:hover i {
            transform: rotate(-8deg) scale(1.08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(199, 146, 62, 0.07);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(199, 146, 62, 0.12);
            box-shadow: inset 0 0 0 1px rgba(199, 146, 62, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            background: var(--color-primary);
            color: #fff;
            white-space: nowrap;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .nav-cta:hover {
            background: var(--color-primary-dark);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-bg-alt);
            color: var(--color-primary);
        }

        .mobile-menu-close {
            display: none;
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            z-index: 1002;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-bg-dark) url('assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 24, 20, 0.72) 0%, rgba(28, 24, 20, 0.55) 40%, rgba(28, 24, 20, 0.78) 100%);
            z-index: 1;
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
            max-width: 750px;
        }

        .page-banner-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(199, 146, 62, 0.85);
            color: #fff;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
            line-height: 1.25;
        }

        .page-banner p {
            font-size: 1.15rem;
            color: var(--color-text-on-dark-soft);
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ===== Sections ===== */
        .section {
            padding: 60px 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }

        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .section-dark .section-header h2 {
            color: var(--color-text-on-dark);
        }

        .section-header .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-dark .section-header .section-desc {
            color: var(--color-text-on-dark-soft);
        }

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

        .cards-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .cards-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .event-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .event-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }

        .event-card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-alt);
        }

        .event-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .event-card:hover .event-card-img-wrap img {
            transform: scale(1.06);
        }

        .event-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            z-index: 2;
        }

        .tag-hot {
            background: var(--color-accent);
            color: #fff;
        }

        .tag-new {
            background: var(--color-success);
            color: #fff;
        }

        .tag-popular {
            background: var(--color-warning);
            color: #fff;
        }

        .tag-premium {
            background: var(--color-primary);
            color: #fff;
        }

        .event-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .event-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .event-card-body .event-desc {
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }

        .event-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--color-text-light);
            flex-wrap: wrap;
        }

        .event-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .event-card-meta i {
            font-size: 0.85rem;
            color: var(--color-primary);
        }

        /* ===== Stats Bar ===== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .stat-icon {
            font-size: 2rem;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: 0.02em;
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            font-weight: 500;
        }

        /* ===== Steps Flow ===== */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 30px 22px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* ===== Rules Grid ===== */
        .rules-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .rule-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .rule-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .rule-icon-wrap {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            border-radius: var(--radius);
            background: rgba(199, 146, 62, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-primary);
        }

        .rule-card-content h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 5px;
        }

        .rule-card-content p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* ===== Testimonials ===== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .testimonial-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow);
        }

        .testimonial-stars {
            color: #e8b830;
            font-size: 0.95rem;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .testimonial-card .testimonial-text {
            font-size: 0.93rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text);
        }

        .testimonial-author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--color-primary);
            font-size: 1rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            cursor: pointer;
            transition: color var(--transition-fast);
            letter-spacing: 0.01em;
        }

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

        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.93rem;
            color: var(--color-text-soft);
            line-height: 1.75;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #2a2218 50%, var(--color-bg-dark-alt) 100%);
            text-align: center;
            color: var(--color-text-on-dark);
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: var(--color-text-on-dark-soft);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(199, 146, 62, 0.35);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 8px 24px rgba(199, 146, 62, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark-soft);
            padding: 50px 0 0;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo-brand {
            color: var(--color-text-on-dark);
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .footer-brand .logo-brand i {
            color: var(--color-primary);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--color-text-on-dark-soft);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--color-text-on-dark-soft);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-primary-light);
        }

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: var(--color-text-on-dark-soft);
        }

        /* ===== Buttons & Links ===== */
        .text-link {
            color: var(--color-primary);
            font-weight: 600;
            transition: color var(--transition-fast);
        }

        .text-link:hover {
            color: var(--color-primary-dark);
        }

        .text-link i {
            font-size: 0.75rem;
            margin-left: 4px;
            transition: transform var(--transition-fast);
        }

        .text-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .rules-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .main-nav a {
                padding: 8px 13px;
                font-size: 0.88rem;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 18px;
                --header-height: 60px;
            }
            .main-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--color-surface);
                flex-direction: column;
                padding: 70px 20px 30px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition);
                z-index: 1001;
                align-items: stretch;
            }
            .main-nav.open {
                right: 0;
            }
            .main-nav a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius);
                width: 100%;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .mobile-menu-close {
                display: block;
            }
            .mobile-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.5);
                z-index: 1000;
            }
            .mobile-overlay.show {
                display: block;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta-mobile {
                display: inline-flex;
                margin-top: 8px;
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                border-radius: 50px;
                font-weight: 700;
                background: var(--color-primary);
                color: #fff;
            }
            .cards-grid,
            .cards-grid-2,
            .cards-grid-4 {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .rules-grid {
                grid-template-columns: 1fr;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-banner {
                min-height: 300px;
            }
            .page-banner h1 {
                font-size: 1.75rem;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 14px;
            }
            .page-banner {
                min-height: 250px;
            }
            .page-banner h1 {
                font-size: 1.45rem;
            }
            .page-banner p {
                font-size: 0.85rem;
            }
            .page-banner-content {
                padding: 40px 14px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 14px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .event-card-body {
                padding: 16px;
            }
            .event-card-body h3 {
                font-size: 1.05rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-gold: #C8A45C;
            --color-gold-dark: #B0893D;
            --color-gold-light: #DCC89B;
            --color-navy: #1B1E3D;
            --color-navy-light: #252A4A;
            --color-navy-dark: #12152A;
            --color-cream: #FFF8F0;
            --color-warm: #FDF5E8;
            --color-text: #1a1a1a;
            --color-text-soft: #5a5a5a;
            --color-text-muted: #888888;
            --color-border: #e8e4dd;
            --color-border-light: #f0ede7;
            --color-white: #ffffff;
            --color-bg: #fafaf8;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-gold: 0 4px 20px rgba(200, 164, 92, 0.25);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 1.25rem;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ========== HEADER & NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 1.5rem;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-navy);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: opacity var(--transition-fast);
        }
        .logo-brand i {
            color: var(--color-gold);
            font-size: 1.55rem;
            transition: transform var(--transition-bounce);
        }
        .logo-brand:hover i {
            transform: rotate(-10deg) scale(1.1);
        }
        .logo-brand:hover {
            opacity: 0.85;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1.05rem;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-smooth);
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .main-nav a:hover {
            color: var(--color-gold-dark);
            background: var(--color-warm);
        }
        .main-nav a.active {
            color: var(--color-gold-dark);
            background: var(--color-warm);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-gold);
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .btn-header-outline {
            border: 1.5px solid var(--color-gold);
            color: var(--color-gold-dark);
            background: transparent;
        }
        .btn-header-outline:hover {
            background: var(--color-gold);
            color: var(--color-white);
            box-shadow: var(--shadow-gold);
            border-color: var(--color-gold);
        }
        .btn-header-fill {
            background: var(--color-gold);
            color: var(--color-white);
            border: 1.5px solid var(--color-gold);
        }
        .btn-header-fill:hover {
            background: var(--color-gold-dark);
            border-color: var(--color-gold-dark);
            box-shadow: var(--shadow-gold);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-navy);
            padding: 0.4rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: var(--color-warm);
        }
        @media (max-width: 1024px) {
            .header-inner {
                height: 60px;
            }
            .main-nav {
                gap: 0;
            }
            .main-nav a {
                padding: 0.4rem 0.75rem;
                font-size: 0.85rem;
            }
            .btn-header {
                padding: 0.4rem 0.9rem;
                font-size: 0.82rem;
            }
            .logo-brand {
                font-size: 1.15rem;
            }
            .logo-brand i {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                align-items: stretch;
                padding: 0.75rem 1rem;
                gap: 0.3rem;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-smooth);
                z-index: 999;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                font-size: 0.95rem;
                border-radius: var(--radius-md);
                justify-content: center;
            }
            .main-nav a.active::after {
                display: none;
            }
            .header-cta {
                gap: 0.4rem;
            }
            .btn-header {
                padding: 0.4rem 0.75rem;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                height: 54px;
                gap: 0.5rem;
            }
            .logo-brand {
                font-size: 1rem;
                gap: 0.35rem;
            }
            .logo-brand i {
                font-size: 1.1rem;
            }
            .btn-header {
                padding: 0.35rem 0.6rem;
                font-size: 0.72rem;
                border-radius: var(--radius-sm);
            }
            .main-nav {
                top: 54px;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--color-navy);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(27, 30, 61, 0.88) 0%,
                    rgba(27, 30, 61, 0.72) 40%,
                    rgba(18, 21, 42, 0.65) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
            z-index: 2;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            padding: 3rem 0 4rem;
            width: 100%;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 1.25rem;
            flex-wrap: wrap;
        }
        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }
        .banner-breadcrumb a:hover {
            color: var(--color-gold-light);
        }
        .banner-breadcrumb .sep {
            font-size: 0.7rem;
            opacity: 0.6;
        }
        .banner-breadcrumb .current {
            color: var(--color-gold-light);
            font-weight: 500;
        }
        .banner-title {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.03em;
            margin-bottom: 0.75rem;
            line-height: 1.2;
        }
        .banner-title .highlight {
            color: var(--color-gold-light);
            position: relative;
        }
        .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }
        .banner-stats-row {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .banner-stat-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
        }
        .banner-stat-item .stat-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-gold-light);
        }
        .banner-stat-item .stat-label {
            font-size: 0.82rem;
            opacity: 0.8;
        }
        @media (max-width: 1024px) {
            .page-banner {
                min-height: 320px;
            }
            .banner-title {
                font-size: 2.1rem;
            }
            .banner-desc {
                font-size: 1rem;
            }
            .banner-stat-item .stat-num {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 768px) {
            .page-banner {
                min-height: 280px;
            }
            .banner-content {
                padding: 2rem 0 3rem;
            }
            .banner-title {
                font-size: 1.7rem;
            }
            .banner-desc {
                font-size: 0.9rem;
                max-width: 100%;
            }
            .banner-stats-row {
                gap: 1.25rem;
            }
            .banner-stat-item .stat-num {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 240px;
            }
            .banner-title {
                font-size: 1.4rem;
            }
            .banner-desc {
                font-size: 0.82rem;
            }
            .banner-breadcrumb {
                font-size: 0.78rem;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 4rem 0;
        }
        .section-sm {
            padding: 2.5rem 0;
        }
        .section-lg {
            padding: 5rem 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-navy);
            letter-spacing: 0.02em;
            margin-bottom: 0.5rem;
        }
        .section-header .subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 550px;
            margin: 0 auto;
        }
        .section-header .gold-line {
            display: inline-block;
            width: 50px;
            height: 3px;
            background: var(--color-gold);
            border-radius: 3px;
            margin-bottom: 0.75rem;
        }
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-lg {
                padding: 3rem 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .section-header .subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== GAME CARDS GRID ========== */
        .games-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .game-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .game-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-gold-light);
        }
        .game-card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #f5f3ee;
        }
        .game-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .game-card:hover .game-card-img-wrap img {
            transform: scale(1.06);
        }
        .game-card-badge {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            padding: 0.25rem 0.65rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .badge-hot {
            background: #e74c3c;
            color: #fff;
        }
        .badge-new {
            background: #27ae60;
            color: #fff;
        }
        .badge-recommend {
            background: var(--color-gold);
            color: #fff;
        }
        .game-card-body {
            padding: 1.25rem 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .game-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-navy);
            margin-bottom: 0.35rem;
            letter-spacing: 0.01em;
        }
        .game-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-bottom: 0.6rem;
        }
        .game-card-tag {
            font-size: 0.72rem;
            padding: 0.18rem 0.55rem;
            border-radius: 14px;
            background: var(--color-warm);
            color: var(--color-gold-dark);
            font-weight: 500;
        }
        .game-card-body .desc {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.55;
            margin-bottom: 1rem;
            flex: 1;
        }
        .game-card-stats {
            display: flex;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-bottom: 0.75rem;
        }
        .game-card-stats span {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .btn-play {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            width: 100%;
            padding: 0.6rem 1rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            background: var(--color-gold);
            color: #fff;
            transition: all var(--transition-smooth);
        }
        .btn-play:hover {
            background: var(--color-gold-dark);
            box-shadow: var(--shadow-gold);
            transform: translateY(-1px);
        }
        .btn-play:active {
            transform: scale(0.97);
        }
        @media (max-width: 1024px) {
            .games-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }
        @media (max-width: 768px) {
            .games-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .game-card-body h3 {
                font-size: 1rem;
            }
            .game-card-body .desc {
                font-size: 0.8rem;
            }
            .btn-play {
                font-size: 0.82rem;
                padding: 0.5rem 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .games-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .game-card-img-wrap {
                aspect-ratio: 16 / 9;
            }
        }

        /* ========== FEATURED HIGHLIGHT ========== */
        .featured-highlight {
            background: var(--color-navy);
            color: #fff;
            border-radius: var(--radius-2xl);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }
        .featured-highlight-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            border-radius: var(--radius-xl);
            background: #2a2d4a;
        }
        .featured-highlight-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .featured-highlight:hover .featured-highlight-img img {
            transform: scale(1.04);
        }
        .featured-highlight-body {
            padding: 2rem 2rem 2rem 0;
        }
        .featured-highlight-body .label {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--color-gold);
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: 0.04em;
        }
        .featured-highlight-body h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            letter-spacing: 0.02em;
        }
        .featured-highlight-body p {
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.3rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
            transition: all var(--transition-smooth);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            box-shadow: 0 0 24px rgba(255, 255, 255, 0.12);
        }
        @media (max-width: 768px) {
            .featured-highlight {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .featured-highlight-body {
                padding: 1.5rem;
            }
            .featured-highlight-img {
                border-radius: var(--radius-xl) var(--radius-xl) 0 0;
                aspect-ratio: 16 / 9;
            }
            .featured-highlight-body h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .featured-highlight-body {
                padding: 1.25rem;
            }
            .featured-highlight-body h3 {
                font-size: 1.15rem;
            }
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: 1.75rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-gold-light);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-gold);
            margin-bottom: 0.6rem;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-navy);
            letter-spacing: 0.02em;
            margin-bottom: 0.25rem;
        }
        .stat-card .stat-label-text {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .stat-card {
                padding: 1.25rem 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.6rem;
            }
            .stat-card .stat-icon {
                font-size: 1.5rem;
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--color-gold-light);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.1rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-navy);
            background: transparent;
            text-align: left;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            gap: 1rem;
        }
        .faq-question:hover {
            background: var(--color-warm);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-gold);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem;
            color: var(--color-text-soft);
            font-size: 0.9rem;
            line-height: 1.7;
            border-top: 1px solid var(--color-border-light);
            margin-top: 0;
            padding-top: 1rem;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 0.9rem 1.15rem;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 1.15rem 1rem;
                font-size: 0.82rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
            border-radius: var(--radius-2xl);
            padding: 3.5rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.12);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(200, 164, 92, 0.08);
            pointer-events: none;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 1.75rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
            font-size: 1rem;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            letter-spacing: 0.03em;
            background: var(--color-gold);
            color: #fff;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-gold);
        }
        .btn-cta-large:hover {
            background: #d4b368;
            box-shadow: 0 8px 32px rgba(200, 164, 92, 0.4);
            transform: translateY(-2px);
        }
        .btn-cta-large:active {
            transform: scale(0.96);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 2.5rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn-cta-large {
                font-size: 0.95rem;
                padding: 0.7rem 1.8rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-navy-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 3.5rem 0 0;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .logo-brand {
            color: #fff;
            margin-bottom: 0.75rem;
            font-size: 1.25rem;
        }
        .footer-brand .logo-brand i {
            color: var(--color-gold-light);
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.65;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.9rem;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-gold-light);
        }
        .footer-bottom {
            padding: 1.5rem 0;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .site-footer {
                padding: 2.5rem 0 0;
            }
            .footer-brand p {
                font-size: 0.8rem;
            }
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .anim-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }
        .anim-delay-1 {
            animation-delay: 0.1s;
            opacity: 0;
        }
        .anim-delay-2 {
            animation-delay: 0.2s;
            opacity: 0;
        }
        .anim-delay-3 {
            animation-delay: 0.3s;
            opacity: 0;
        }

        /* ========== MISC ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-gold {
            color: var(--color-gold);
        }
        .bg-soft {
            background: var(--color-warm);
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a1a2e;
            --color-primary-light: #25254a;
            --color-accent: #d4a843;
            --color-accent-light: #e8c97a;
            --color-accent-dark: #b8912f;
            --color-gold: #f0c060;
            --color-red-badge: #e03a3a;
            --color-orange-tag: #f5753e;
            --color-bg: #fafaf9;
            --color-bg-alt: #f5f0e8;
            --color-bg-dark: #1a1a2e;
            --color-text: #1c1c1e;
            --color-text-light: #5c5c64;
            --color-text-lighter: #8a8a92;
            --color-white: #ffffff;
            --color-border: #e5e0d8;
            --color-border-light: #f0ebe2;
            --color-success: #2d8a56;
            --color-warning: #e8a020;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-gold: 0 8px 32px rgba(212, 168, 67, 0.25);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --nav-height: 72px;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

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

        /* ============ HEADER & NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-primary);
            transition: opacity var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-link:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 3px 12px rgba(212, 168, 67, 0.35);
        }

        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text .brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .logo-text .brand-sub {
            font-size: 0.68rem;
            font-weight: 400;
            color: var(--color-text-lighter);
            letter-spacing: 0.04em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(26, 26, 46, 0.04);
        }

        .main-nav a.active {
            color: var(--color-white);
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(212, 168, 67, 0.35);
        }

        .main-nav a.active:hover {
            color: var(--color-white);
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
            box-shadow: 0 6px 22px rgba(212, 168, 67, 0.45);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(26, 26, 46, 0.06);
        }

        /* ============ HERO BANNER ============ */
        .hero-banner {
            position: relative;
            padding: 80px 0 90px;
            background: linear-gradient(170deg, #1a1a2e 0%, #1f1f38 30%, #2a2240 60%, #1a1a2e 100%);
            overflow: hidden;
            color: #fff;
            text-align: center;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-block;
            padding: 8px 22px;
            background: rgba(212, 168, 67, 0.2);
            border: 1px solid rgba(212, 168, 67, 0.4);
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-accent-light);
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            animation: pulseBadge 2.5s ease-in-out infinite;
        }

        @keyframes pulseBadge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(212, 168, 67, 0.3);
            }
            50% {
                box-shadow: 0 0 0 18px rgba(212, 168, 67, 0);
            }
        }

        .hero-banner h1 {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 18px;
            line-height: 1.25;
            background: linear-gradient(180deg, #ffffff 0%, #e8c97a 60%, #d4a843 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-banner .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.75;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 40px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            box-shadow: 0 8px 28px rgba(212, 168, 67, 0.4);
            cursor: pointer;
        }

        .btn-hero-primary:hover {
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
            box-shadow: 0 12px 36px rgba(212, 168, 67, 0.55);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 40px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ============ SECTION COMMON ============ */
        .section {
            padding: 70px 0;
        }

        .section-alt {
            background: var(--color-bg-alt);
        }

        .section-dark {
            background: var(--color-bg-dark);
            color: #fff;
        }

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

        .section-header .section-label {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(212, 168, 67, 0.12);
            color: var(--color-accent-dark);
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-header .section-subtitle {
            color: var(--color-text-light);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }

        .section-dark .section-header .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ============ HOT OFFERS ============ */
        .hot-offers-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 10px;
        }

        .hot-offer-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            display: flex;
            flex-direction: column;
            transition: all var(--transition-smooth);
            border: 1px solid var(--color-border-light);
            position: relative;
        }

        .hot-offer-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .hot-offer-card.featured {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-gold);
        }

        .hot-offer-card .offer-image-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .hot-offer-card .offer-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .hot-offer-card:hover .offer-image-wrap img {
            transform: scale(1.06);
        }

        .hot-offer-card .offer-badge-ribbon {
            position: absolute;
            top: 20px;
            right: -8px;
            background: var(--color-red-badge);
            color: #fff;
            padding: 8px 18px;
            font-weight: 700;
            font-size: 0.82rem;
            border-radius: 4px 0 0 4px;
            box-shadow: 2px 3px 10px rgba(224, 58, 58, 0.4);
            letter-spacing: 0.04em;
            z-index: 2;
        }

        .hot-offer-card .offer-countdown {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(0, 0, 0, 0.75);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
            backdrop-filter: blur(6px);
        }

        .hot-offer-card .offer-countdown i {
            color: var(--color-accent-light);
            margin-right: 5px;
        }

        .hot-offer-card .offer-body {
            padding: 24px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .hot-offer-card .offer-body h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .hot-offer-card .offer-body .offer-desc {
            color: var(--color-text-light);
            font-size: 0.93rem;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .hot-offer-card .offer-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .offer-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        .offer-tag.hot {
            background: #fef2f2;
            color: #d94436;
        }

        .offer-tag.limited {
            background: #fff7ed;
            color: #e87a30;
        }

        .offer-tag.new {
            background: #f0fdf4;
            color: #2d8a56;
        }

        .btn-offer {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 30px;
            transition: all var(--transition-fast);
            align-self: flex-start;
            cursor: pointer;
        }

        .btn-offer:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(212, 168, 67, 0.4);
        }

        /* ============ CATEGORY CARDS ============ */
        .category-cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
        }

        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .category-card:hover::before {
            transform: scaleX(1);
        }

        .category-card .cat-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            background: rgba(212, 168, 67, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-accent-dark);
            transition: all var(--transition-smooth);
        }

        .category-card:hover .cat-icon {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.1);
        }

        .category-card h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .category-card p {
            font-size: 0.85rem;
            color: var(--color-text-lighter);
            line-height: 1.5;
        }

        /* ============ VIP TIERS ============ */
        .vip-tiers {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .vip-tier-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .vip-tier-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .vip-tier-card.premium {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-gold);
            transform: scale(1.04);
        }

        .vip-tier-card.premium:hover {
            transform: scale(1.04) translateY(-6px);
        }

        .vip-tier-card .vip-tier-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            transition: all var(--transition-smooth);
        }

        .vip-tier-card .vip-tier-icon.silver {
            background: linear-gradient(135deg, #e5e7eb, #c8cdd5);
            color: #6b7280;
        }
        .vip-tier-card .vip-tier-icon.gold {
            background: linear-gradient(135deg, #f0c060, #d4a843);
            color: #fff;
            box-shadow: 0 6px 20px rgba(212, 168, 67, 0.4);
        }
        .vip-tier-card .vip-tier-icon.diamond {
            background: linear-gradient(135deg, #a8d8ea, #6bb8d4);
            color: #fff;
            box-shadow: 0 6px 20px rgba(107, 184, 212, 0.4);
        }

        .vip-tier-card h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .vip-tier-card .vip-discount {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent-dark);
            margin: 10px 0;
            font-family: var(--font-heading);
        }

        .vip-tier-card.premium .vip-discount {
            font-size: 2.6rem;
        }

        .vip-tier-card .vip-benefits {
            list-style: none;
            text-align: left;
            padding: 0;
            margin: 16px 0 0;
        }

        .vip-tier-card .vip-benefits li {
            padding: 7px 0;
            font-size: 0.9rem;
            color: var(--color-text-light);
            border-bottom: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .vip-tier-card .vip-benefits li i {
            color: var(--color-success);
            font-size: 0.8rem;
        }

        .vip-tier-card .vip-benefits li:last-child {
            border-bottom: none;
        }

        /* ============ POINTS EXCHANGE ============ */
        .points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .point-exchange-card {
            background: var(--color-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .point-exchange-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .point-exchange-card .pex-img {
            height: 160px;
            overflow: hidden;
        }

        .point-exchange-card .pex-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .point-exchange-card:hover .pex-img img {
            transform: scale(1.05);
        }

        .point-exchange-card .pex-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .point-exchange-card .pex-body h4 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
        }

        .point-exchange-card .pex-body .pex-points {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--color-accent-dark);
            margin-bottom: 10px;
            font-family: var(--font-heading);
        }

        .point-exchange-card .pex-body .pex-points span {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--color-text-lighter);
        }

        .btn-exchange {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            border-radius: 25px;
            transition: all var(--transition-fast);
            align-self: flex-start;
            cursor: pointer;
        }

        .btn-exchange:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 3px 12px rgba(212, 168, 67, 0.35);
        }

        /* ============ STEPS FLOW ============ */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            font-family: var(--font-heading);
            box-shadow: 0 4px 14px rgba(212, 168, 67, 0.35);
            transition: transform var(--transition-fast);
        }

        .step-item:hover .step-number {
            transform: scale(1.12);
        }

        .step-item h5 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-lighter);
            line-height: 1.5;
        }

        .section-dark .step-item h5 {
            color: #fff;
        }
        .section-dark .step-item p {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--color-text);
            transition: color var(--transition-fast);
            user-select: none;
        }

        .faq-question:hover {
            color: var(--color-accent-dark);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--color-text-lighter);
            transition: transform var(--transition-fast);
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent-dark);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--color-text-light);
            line-height: 1.75;
            font-size: 0.93rem;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            text-align: center;
            padding: 70px 0;
            background: linear-gradient(160deg, #1a1a2e 0%, #25254a 50%, #1a1a2e 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2.3rem;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 500px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: 40px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            box-shadow: 0 10px 32px rgba(212, 168, 67, 0.45);
            cursor: pointer;
        }

        .btn-cta-large:hover {
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
            box-shadow: 0 14px 42px rgba(212, 168, 67, 0.6);
            transform: translateY(-3px);
        }

        /* ============ COPY CODE MODAL ============ */
        .coupon-code-box {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            border: 2px dashed var(--color-accent);
            border-radius: 10px;
            padding: 10px 18px;
            font-family: monospace;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-accent-dark);
            letter-spacing: 0.06em;
            cursor: pointer;
            transition: all var(--transition-fast);
            user-select: all;
        }

        .coupon-code-box:hover {
            background: #fffdf5;
            border-color: var(--color-accent-dark);
        }

        .copy-toast {
            position: fixed;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            background: #1a1a2e;
            color: #fff;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            z-index: 9999;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
        }

        .copy-toast.show {
            opacity: 1;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #12121f;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            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: 36px;
        }

        .footer-brand .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .logo-brand i {
            font-size: 1.4rem;
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col h4 {
            font-weight: 700;
            font-size: 1rem;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 9px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .hero-banner h1 {
                font-size: 2.4rem;
            }
            .hot-offers-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .vip-tiers {
                grid-template-columns: repeat(2, 1fr);
            }
            .vip-tier-card.premium {
                transform: scale(1);
            }
            .vip-tier-card.premium:hover {
                transform: translateY(-6px);
            }
            .points-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 62px;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                z-index: 999;
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .main-nav a {
                width: 100%;
                justify-content: center;
                padding: 14px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .mobile-menu-toggle {
                display: inline-flex;
            }
            .hero-banner {
                padding: 50px 0 56px;
            }
            .hero-banner h1 {
                font-size: 1.8rem;
            }
            .hero-banner .hero-desc {
                font-size: 1rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
            .section {
                padding: 44px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .hot-offers-grid {
                grid-template-columns: 1fr;
            }
            .category-cards-grid {
                grid-template-columns: 1fr;
            }
            .vip-tiers {
                grid-template-columns: 1fr;
            }
            .points-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr 1fr;
                gap: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .hot-offer-card .offer-image-wrap {
                height: 170px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero-banner h1 {
                font-size: 1.5rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 16px;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .steps-flow {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .logo-text .brand-name {
                font-size: 1.1rem;
            }
            .btn-cta-large {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .hot-offer-card .offer-image-wrap {
                height: 150px;
            }
        }