/* roulang page: index */
:root {
            --bg-primary: #0A0A0A;
            --bg-secondary: #171717;
            --bg-tertiary: #1F1F1F;
            --accent-primary: #EA580C;
            --accent-secondary: #EF4444;
            --accent-soft: #FDBA74;
            --text-primary: #FFFFFF;
            --text-secondary: #A3A3A3;
            --text-muted: #71717A;
            --border-color: #2E2E2E;
            --border-light: #3F3F3F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-fire: linear-gradient(135deg, #EA580C 0%, #EF4444 100%);
            --gradient-fire-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.12) 100%);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--accent-primary);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

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

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

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.4rem);
            font-weight: 900;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: clamp(1.5rem, 3vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: clamp(1.1rem, 2vw, 1.45rem);
            font-weight: 700;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Section Base ===== */
        .section-pad {
            padding: var(--spacing-xl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-lg) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }

        .section-title {
            margin-bottom: 0.9rem;
            text-align: left;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 720px;
            text-align: left;
            margin-bottom: 2rem;
        }

        /* ===== Navbar ===== */
        .navbar-custom {
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.7rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }

        .navbar-custom.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 0.25rem;
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.55rem 0.9rem;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0.4rem 0.65rem;
            color: var(--text-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            margin-left: 1rem;
        }

        .btn-login {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 0.45rem 1.1rem;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-primary);
            color: var(--accent-soft);
            background: rgba(234, 88, 12, 0.08);
        }

        .btn-signup {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            background: var(--gradient-fire);
            border: none;
            border-radius: 50px;
            padding: 0.5rem 1.3rem;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(234, 88, 12, 0.35);
        }

        .btn-signup:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(234, 88, 12, 0.45);
            background: linear-gradient(135deg, #EF6B1D 0%, #F04A4A 100%);
        }

        .nav-actions-mobile {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            background: linear-gradient(180deg, #0D0D0D 0%, #0A0A0A 40%, #171717 100%);
            overflow: hidden;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding: var(--spacing-xl) 0;
        }

        .hero-bg-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/48ecef745ffc77fb.jpg') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
            pointer-events: none;
        }

        .hero-glow {
            position: absolute;
            top: -200px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.15) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
            border-radius: 50%;
        }

        .hero-glow-2 {
            position: absolute;
            bottom: -180px;
            left: -150px;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(239, 68, 68, 0.1) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
            border-radius: 50%;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-soft);
            background: rgba(234, 88, 12, 0.12);
            border: 1px solid rgba(234, 88, 12, 0.3);
            border-radius: 50px;
            padding: 0.45rem 1.1rem;
            margin-bottom: 1.2rem;
        }

        .hero-badge .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-primary);
            animation: pulse-dot 1.6s ease-in-out infinite;
            display: inline-block;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.5);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(234, 88, 12, 0);
            }
        }

        .hero-title {
            margin-bottom: 1.2rem;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.8rem;
            max-width: 620px;
            text-align: left;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.85rem;
            margin-bottom: 1.5rem;
        }

        .btn-primary-fire {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            background: var(--gradient-fire);
            border: none;
            border-radius: 50px;
            padding: 0.85rem 2.2rem;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(234, 88, 12, 0.4);
            white-space: nowrap;
        }

        .btn-primary-fire:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(234, 88, 12, 0.5);
            background: linear-gradient(135deg, #F06A1E 0%, #F04A4A 100%);
        }

        .btn-secondary-dark {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 0.85rem 1.8rem;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-secondary-dark:hover {
            color: var(--text-primary);
            border-color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.08);
            transform: translateY(-2px);
        }

        .hero-quick-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            align-items: center;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.02em;
        }

        .hero-stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .hero-stat-divider {
            width: 1px;
            height: 32px;
            background: var(--border-light);
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .video-phone-card {
            width: 320px;
            max-width: 100%;
            background: #111111;
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            position: relative;
            aspect-ratio: 9 / 18;
        }

        .video-phone-card .phone-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .video-phone-card .phone-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.5) 60%, rgba(0, 0, 0, 0.85) 100%);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            padding: 1.2rem;
        }

        .phone-top-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .phone-live-badge {
            font-size: 0.7rem;
            font-weight: 700;
            color: #fff;
            background: #EF4444;
            padding: 0.25rem 0.65rem;
            border-radius: 50px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .phone-signal-badge {
            font-size: 0.7rem;
            color: var(--accent-soft);
            font-weight: 600;
        }

        .phone-bottom-content {
            text-align: left;
        }

        .phone-bottom-content h4 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            color: #fff;
        }

        .phone-bottom-content p {
            font-size: 0.78rem;
            color: #D4D4D4;
            margin-bottom: 0.8rem;
        }

        .phone-play-btn {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--gradient-fire);
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(234, 88, 12, 0.5);
        }

        .phone-play-btn:hover {
            transform: scale(1.08);
            box-shadow: 0 8px 28px rgba(234, 88, 12, 0.6);
        }

        /* ===== Stats Strip ===== */
        .stats-strip-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 1.8rem 0;
        }

        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
            justify-content: space-between;
        }

        .stats-strip-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .stats-strip-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .stats-strip-text .ss-value {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .stats-strip-text .ss-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== Category Cards ===== */
        .category-section {
            background: var(--bg-primary);
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
            margin-top: 1rem;
        }

        .category-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: block;
            aspect-ratio: 4 / 3;
            position: relative;
            text-decoration: none;
        }

        .category-card:hover {
            border-color: rgba(234, 88, 12, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .category-card-img {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            overflow: hidden;
        }

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

        .category-card:hover .category-card-img img {
            transform: scale(1.05);
        }

        .category-card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 1.4rem;
            background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.85) 100%);
        }

        .category-card-overlay h3 {
            font-size: 1.15rem;
            margin-bottom: 0.3rem;
            color: #fff;
        }

        .category-card-overlay p {
            font-size: 0.8rem;
            color: #D4D4D4;
            margin-bottom: 0;
        }

        .category-card .cat-arrow {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            transition: all var(--transition);
        }

        .category-card:hover .cat-arrow {
            background: var(--gradient-fire);
            transform: rotate(45deg);
        }

        /* ===== Game Highlights ===== */
        .game-highlights-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .highlight-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem;
            background: var(--bg-tertiary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            height: 100%;
        }

        .highlight-item:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-sm);
        }

        .highlight-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            border-radius: 14px;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.25rem;
        }

        .highlight-text h3 {
            font-size: 1rem;
            margin-bottom: 0.4rem;
        }

        .highlight-text p {
            font-size: 0.85rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        /* ===== Rankings ===== */
        .rankings-section {
            background: var(--bg-primary);
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

        .rank-item:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .rank-number {
            width: 40px;
            height: 40px;
            min-width: 40px;
            border-radius: 10px;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent-primary);
        }

        .rank-item:nth-child(1) .rank-number {
            background: var(--gradient-fire);
            color: #fff;
            border-color: transparent;
        }

        .rank-content {
            flex: 1;
        }

        .rank-content h4 {
            font-size: 0.95rem;
            margin-bottom: 0.2rem;
        }

        .rank-content p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .rank-badge {
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.3rem 0.7rem;
            border-radius: 50px;
            white-space: nowrap;
        }

        .rank-badge.hot {
            background: rgba(239, 68, 68, 0.15);
            color: #EF4444;
            border: 1px solid rgba(239, 68, 68, 0.3);
        }

        .rank-badge.new {
            background: rgba(234, 88, 12, 0.15);
            color: var(--accent-soft);
            border: 1px solid rgba(234, 88, 12, 0.3);
        }

        /* ===== Guarantees ===== */
        .guarantees-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .guarantee-item {
            text-align: left;
            padding: 1.5rem;
            background: var(--bg-tertiary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            height: 100%;
            transition: all var(--transition);
        }

        .guarantee-item:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-sm);
        }

        .guarantee-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }

        .guarantee-item h3 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .guarantee-item p {
            font-size: 0.83rem;
            margin-bottom: 0;
            color: var(--text-secondary);
        }

        /* ===== Process ===== */
        .process-section {
            background: var(--bg-primary);
        }

        .process-step {
            position: relative;
            padding: 1.5rem;
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            height: 100%;
            text-align: left;
        }

        .process-step-number {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            border-radius: 50px;
            padding: 0.3rem 0.8rem;
            margin-bottom: 0.8rem;
        }

        .process-step h3 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }

        .process-step p {
            font-size: 0.83rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Server Performance ===== */
        .server-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .server-detail {
            padding: 1.75rem;
            background: var(--bg-tertiary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        .server-detail h3 {
            font-size: 1.15rem;
            margin-bottom: 0.8rem;
        }

        .server-detail p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .server-spec-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 1rem;
        }

        .server-spec-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-soft);
            background: rgba(234, 88, 12, 0.08);
            border: 1px solid rgba(234, 88, 12, 0.2);
            padding: 0.35rem 0.85rem;
            border-radius: 50px;
        }

        /* ===== Download ===== */
        .download-section {
            background: var(--bg-primary);
        }

        .download-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 1.75rem;
            height: 100%;
            text-align: left;
            transition: all var(--transition);
        }

        .download-card:hover {
            border-color: rgba(234, 88, 12, 0.4);
            box-shadow: var(--shadow-glow);
        }

        .download-card .dc-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.6rem;
            margin-bottom: 1rem;
        }

        .download-card h3 {
            font-size: 1.05rem;
            margin-bottom: 0.5rem;
        }

        .download-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        .btn-download {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            background: var(--gradient-fire);
            border: none;
            border-radius: 50px;
            padding: 0.65rem 1.5rem;
            transition: all var(--transition);
            box-shadow: 0 3px 14px rgba(234, 88, 12, 0.35);
            text-decoration: none;
        }

        .btn-download:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(234, 88, 12, 0.5);
        }

        /* ===== Testimonials ===== */
        .testimonials-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .testimonial-card {
            padding: 1.5rem;
            background: var(--bg-tertiary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            height: 100%;
            text-align: left;
            transition: all var(--transition);
        }

        .testimonial-card:hover {
            border-color: rgba(234, 88, 12, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .testimonial-stars {
            color: #FACC15;
            font-size: 0.85rem;
            margin-bottom: 0.7rem;
        }

        .testimonial-card blockquote {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-style: italic;
            margin-bottom: 1rem;
            border-left: 3px solid var(--accent-primary);
            padding-left: 1rem;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .testimonial-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--gradient-fire);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-author-info .ta-name {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
        }

        .testimonial-author-info .ta-meta {
            font-size: 0.72rem;
            color: var(--text-muted);
        }

        /* ===== Screenshots ===== */
        .screenshots-section {
            background: var(--bg-primary);
        }

        .screenshot-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
        }

        .screenshot-card:hover {
            border-color: rgba(234, 88, 12, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .screenshot-card img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .screenshot-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 0.8rem 1rem;
            background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.8));
            font-size: 0.75rem;
            font-weight: 600;
            color: #fff;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .accordion-custom .accordion-item-custom {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-item-custom:hover {
            border-color: rgba(234, 88, 12, 0.3);
        }

        .accordion-custom .accordion-header-custom {
            width: 100%;
            padding: 1.1rem 1.3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-header-custom:hover {
            color: var(--accent-soft);
        }

        .accordion-custom .accordion-header-custom .fa-chevron-down {
            font-size: 0.75rem;
            transition: transform var(--transition);
            color: var(--accent-primary);
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .accordion-custom .accordion-header-custom.active .fa-chevron-down {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body-custom {
            display: none;
            padding: 0 1.3rem 1.2rem;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .accordion-custom .accordion-body-custom.show {
            display: block;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-primary);
        }

        .news-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            text-decoration: none;
            display: block;
        }

        .news-card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
        }

        .news-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-tertiary);
        }

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

        .news-card:hover .news-card-img img {
            transform: scale(1.04);
        }

        .news-card-body {
            padding: 1.1rem;
        }

        .news-card-body .news-date {
            font-size: 0.7rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 0.4rem;
            display: block;
        }

        .news-card-body .news-title {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }

        .news-card-body .news-excerpt {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            text-align: center;
            padding: 3rem 1.5rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ===== Final CTA ===== */
        .final-cta-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0;
        }

        .final-cta-box {
            background: linear-gradient(135deg, #1A1008 0%, #0A0A0A 100%);
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .final-cta-box::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .final-cta-box::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(239, 68, 68, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .final-cta-box h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 2;
        }

        .final-cta-box p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 1.5rem;
            position: relative;
            z-index: 2;
        }

        .countdown-timer {
            display: flex;
            justify-content: center;
            gap: 0.8rem;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 2;
        }

        .countdown-block {
            background: var(--bg-tertiary);
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: 12px;
            padding: 0.7rem 1rem;
            min-width: 64px;
            text-align: center;
        }

        .countdown-block .cd-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.1;
        }

        .countdown-block .cd-label {
            font-size: 0.65rem;
            color: var(--text-muted);
            font-weight: 500;
            text-transform: uppercase;
        }

        /* ===== Footer ===== */
        .footer-section {
            background: #060606;
            border-top: 1px solid var(--border-color);
            padding: 3.5rem 0 2rem;
        }

        .footer-brand {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .footer-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            color: #fff;
        }

        .footer-desc {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.65;
            max-width: 380px;
            text-align: left;
        }

        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 0.6rem;
        }

        .footer-links li a {
            font-size: 0.83rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .footer-links li a:hover {
            color: var(--accent-soft);
        }

        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom p {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAB ===== */
        .fab-neon {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(7, 7, 13, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(7, 7, 13, 0.82), rgba(7, 7, 13, 0.82)), linear-gradient(135deg, #A3E635 0%, #06B6D4 100%);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06B6D4;
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            opacity: 0.75;
            text-decoration: none;
        }

        .fab-neon:hover {
            opacity: 1;
            color: #A3E635;
            box-shadow: 0 0 32px rgba(163, 230, 53, 0.55);
            transform: scale(1.06);
        }

        .fab-neon:active {
            transform: scale(0.95);
            box-shadow: 0 0 16px rgba(244, 63, 94, 0.5);
            color: #F43F5E;
        }

        .fab-neon .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 18px;
            height: 18px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #07070D;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-nav {
                padding: 1rem 0;
                gap: 0.1rem;
            }

            .nav-actions {
                margin-left: 0;
                margin-top: 0.8rem;
                padding-top: 0.8rem;
                border-top: 1px solid var(--border-color);
                width: 100%;
                justify-content: flex-start;
            }

            .nav-actions-mobile {
                display: flex;
                align-items: center;
                gap: 0.5rem;
            }

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

            .hero-section {
                min-height: auto;
                padding: 4rem 0;
            }

            .hero-visual {
                margin-top: 2.5rem;
            }

            .video-phone-card {
                width: 260px;
            }

            .stats-strip {
                justify-content: flex-start;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --spacing-xl: 3rem;
                --spacing-lg: 2rem;
            }

            .category-grid {
                grid-template-columns: 1fr;
            }

            .category-card {
                aspect-ratio: 16 / 10;
            }

            .hero-title {
                font-size: clamp(1.7rem, 6vw, 2.4rem);
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .stats-strip {
                gap: 1rem;
            }

            .stats-strip-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }

            .stats-strip-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }

            .stats-strip-text .ss-value {
                font-size: 0.95rem;
            }

            .section-desc {
                font-size: 0.9rem;
            }

            .highlight-item {
                flex-direction: column;
                gap: 0.75rem;
            }

            .highlight-icon {
                width: 40px;
                height: 40px;
                min-width: 40px;
                font-size: 1rem;
            }

            .rank-item {
                padding: 0.85rem 1rem;
                gap: 0.7rem;
            }

            .rank-number {
                width: 34px;
                height: 34px;
                min-width: 34px;
                font-size: 0.95rem;
            }

            .rank-content h4 {
                font-size: 0.85rem;
            }

            .final-cta-box {
                padding: 2rem 1.25rem;
            }

            .countdown-block {
                min-width: 50px;
                padding: 0.5rem 0.7rem;
            }

            .countdown-block .cd-value {
                font-size: 1.15rem;
            }

            .download-card {
                padding: 1.25rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: left;
                justify-content: flex-start;
                align-items: flex-start;
            }

            .fab-neon {
                left: 0.75rem;
                bottom: 5rem;
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                border-radius: 14px;
            }
        }

        @media (max-width: 519.98px) {
            .navbar-brand {
                font-size: 0.9rem;
            }

            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 8px;
            }

            .btn-login,
            .btn-signup {
                font-size: 0.75rem;
                padding: 0.4rem 0.85rem;
            }

            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary-fire,
            .btn-secondary-dark {
                width: 100%;
                text-align: center;
                justify-content: center;
            }

            .video-phone-card {
                width: 220px;
                border-radius: 20px;
            }

            .video-phone-card .phone-overlay {
                padding: 0.9rem;
            }

            .category-card-overlay h3 {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.4rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0A0A0A;
            --bg-secondary: #171717;
            --bg-tertiary: #1F1F1F;
            --accent-primary: #EA580C;
            --accent-secondary: #EF4444;
            --accent-soft: #FDBA74;
            --text-primary: #FFFFFF;
            --text-secondary: #A3A3A3;
            --text-muted: #71717A;
            --border-color: #2E2E2E;
            --border-light: #3F3F3F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 3.5rem;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-fire: linear-gradient(135deg, #EA580C 0%, #EF4444 100%);
            --gradient-fire-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.12) 100%);
            --gradient-dark: linear-gradient(180deg, rgba(10, 10, 10, 0) 0%, rgba(10, 10, 10, 0.94) 100%);
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-soft);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-primary);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .text-muted-custom {
            color: var(--text-muted) !important;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad {
            padding: var(--spacing-xl) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-lg) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }
        .section-title {
            margin-bottom: 0.9rem;
            text-align: left;
            font-weight: 800;
            font-size: clamp(1.5rem, 2.5vw, 2.1rem);
            letter-spacing: -0.015em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 720px;
            text-align: left;
            margin-bottom: 2rem;
        }
        .navbar-custom {
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.7rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .navbar-custom.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 0.25rem;
        }
        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.55rem 0.9rem;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0.4rem 0.65rem;
            color: var(--text-primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30' fill='none' stroke='%23FFFFFF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpath d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .btn-login {
            color: var(--accent-soft);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.5rem 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.35);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-primary);
            border-color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.08);
        }
        .btn-signup {
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 0.5rem 1rem;
            background: var(--gradient-fire);
            border-radius: 8px;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 12px rgba(234, 88, 12, 0.3);
        }
        .btn-signup:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 20px rgba(234, 88, 12, 0.45);
        }
        .nav-actions-mobile {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .nav-actions-mobile .btn-login,
        .nav-actions-mobile .btn-signup {
            font-size: 0.78rem;
            padding: 0.4rem 0.7rem;
        }
        /* Article Hero */
        .article-hero {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border-color);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 60%;
            height: 80%;
            background: radial-gradient(ellipse, rgba(234, 88, 12, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            position: relative;
            z-index: 1;
        }
        .breadcrumb-custom a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--accent-primary);
        }
        .breadcrumb-custom .separator {
            color: var(--border-light);
            font-size: 0.75rem;
        }
        .article-hero-content {
            position: relative;
            z-index: 1;
        }
        .article-hero h1 {
            font-size: clamp(1.7rem, 3.2vw, 2.6rem);
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 1rem;
            max-width: 850px;
            text-align: left;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }
        .article-meta .meta-item i {
            color: var(--accent-primary);
            font-size: 0.9rem;
        }
        .article-meta .badge-category {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: var(--gradient-fire-soft);
            color: var(--accent-soft);
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.78rem;
        }
        .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            margin-top: 1rem;
            position: relative;
            z-index: 1;
        }
        .article-cover img {
            width: 100%;
            height: auto;
            min-height: 260px;
            object-fit: cover;
        }
        /* Article Body Layout */
        .article-layout {
            padding: var(--spacing-lg) 0 0;
        }
        .article-body-wrapper {
            max-width: 720px;
        }
        .article-body {
            font-size: 1.02rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-top: 2rem;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }
        .article-body p {
            margin-bottom: 1.1rem;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            border: 1px solid var(--border-color);
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
            padding-left: 1.4rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body blockquote {
            border-left: 3px solid var(--accent-primary);
            padding: 1rem 1.4rem;
            background: var(--bg-secondary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--text-primary);
            font-style: italic;
        }
        .article-body a {
            color: var(--accent-soft);
            border-bottom: 1px dashed rgba(234, 88, 12, 0.4);
        }
        .article-body a:hover {
            color: var(--accent-primary);
            border-bottom-color: var(--accent-primary);
        }
        .article-not-found {
            background: var(--bg-secondary);
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-md);
            padding: 2.5rem 2rem;
            text-align: center;
            color: var(--text-secondary);
        }
        .article-not-found i {
            font-size: 2.5rem;
            color: var(--accent-primary);
            margin-bottom: 1rem;
            display: block;
        }
        .article-not-found .btn-back-home {
            display: inline-block;
            margin-top: 1rem;
            padding: 0.7rem 1.6rem;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 700;
            border-radius: 8px;
            transition: all var(--transition);
        }
        .article-not-found .btn-back-home:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 90px;
        }
        .sidebar-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.4rem;
            margin-bottom: 1.4rem;
            transition: border-color var(--transition);
        }
        .sidebar-card:hover {
            border-color: rgba(234, 88, 12, 0.35);
        }
        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .sidebar-card .download-app-card {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
        }
        .sidebar-card .download-app-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .sidebar-card .btn-download-app {
            display: block;
            width: 100%;
            padding: 0.7rem 1rem;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 700;
            border-radius: 8px;
            text-align: center;
            transition: all var(--transition);
            border: none;
        }
        .sidebar-card .btn-download-app:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .quick-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
        }
        .quick-stat-item {
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
            padding: 0.8rem;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        .quick-stat-item .stat-number {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent-primary);
            display: block;
        }
        .quick-stat-item .stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 0.55rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.88rem;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--accent-primary);
        }
        .sidebar-list i {
            font-size: 0.75rem;
            color: var(--accent-primary);
        }
        /* Tip Cards */
        .tip-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            height: 100%;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-fire);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .tip-card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }
        .tip-card:hover::before {
            opacity: 1;
        }
        .tip-card .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-primary);
            margin-bottom: 1rem;
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .tip-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
        }
        .tip-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }
        /* Steps */
        .step-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 12px rgba(234, 88, 12, 0.3);
        }
        .step-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.4rem;
        }
        .step-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        /* Stats Bar */
        .stats-bar {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }
        .stat-block {
            text-align: center;
        }
        .stat-block .stat-value {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 900;
            color: var(--accent-primary);
            display: block;
            letter-spacing: -0.02em;
            margin-bottom: 0.3rem;
        }
        .stat-block .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.08) 100%);
            border: 1px solid rgba(234, 88, 12, 0.25);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 70%;
            height: 100%;
            background: radial-gradient(ellipse, rgba(234, 88, 12, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.4rem, 2.5vw, 1.9rem);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
            letter-spacing: -0.015em;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
            max-width: 560px;
        }
        .btn-cta-primary {
            display: inline-block;
            padding: 0.85rem 2rem;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 12px;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
            border: none;
            box-shadow: 0 4px 20px rgba(234, 88, 12, 0.35);
        }
        .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(234, 88, 12, 0.5);
            color: #fff;
        }
        .btn-cta-secondary {
            display: inline-block;
            padding: 0.85rem 1.6rem;
            color: var(--accent-soft);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 12px;
            border: 1px solid rgba(234, 88, 12, 0.35);
            transition: all var(--transition);
            position: relative;
            z-index: 1;
            margin-left: 0.5rem;
        }
        .btn-cta-secondary:hover {
            color: var(--text-primary);
            background: rgba(234, 88, 12, 0.1);
            border-color: var(--accent-primary);
        }
        /* FAQ */
        .accordion-custom .accordion-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 0.8rem;
            overflow: hidden;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 1.1rem 1.3rem;
            box-shadow: none;
            border: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--gradient-fire-soft);
            color: var(--accent-primary);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(234, 88, 12, 0.3);
        }
        .accordion-custom .accordion-body {
            color: var(--text-secondary);
            font-size: 0.92rem;
            padding: 0.8rem 1.3rem 1.2rem;
            line-height: 1.65;
        }
        /* Related */
        .related-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1rem;
            height: 100%;
            transition: all var(--transition);
        }
        .related-item:hover {
            border-color: rgba(234, 88, 12, 0.35);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .related-item .related-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--gradient-fire-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1rem;
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .related-item .related-info h4 {
            font-size: 0.92rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.2rem;
        }
        .related-item .related-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        /* FAB */
        .fab-promo {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1080;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            box-shadow: 0 0 20px rgba(234, 88, 12, 0.45), 0 0 40px rgba(239, 68, 68, 0.25);
            color: var(--accent-soft);
            font-size: 1.4rem;
            transition: all var(--transition);
            animation: fabPulse 2.5s ease-in-out infinite;
            opacity: 0.75;
        }
        .fab-promo::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            z-index: -1;
            opacity: 0.6;
        }
        .fab-promo:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(234, 88, 12, 0.65), 0 0 60px rgba(239, 68, 68, 0.4);
            color: #fff;
        }
        .fab-promo:active {
            transform: scale(0.95);
        }
        .fab-promo .notification-dot {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-secondary);
            border: 2px solid var(--bg-primary);
            animation: dotBlink 1.2s ease-in-out infinite;
        }
        @keyframes fabPulse {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-5px);
            }
        }
        @keyframes dotBlink {
            0%, 100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(0.75);
            }
        }
        /* Footer */
        .footer-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 0.8rem;
        }
        .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #fff;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 340px;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            margin-top: 2rem;
            padding-top: 1.2rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            text-align: center;
        }
        /* Responsive */
        @media (max-width: 991.98px) {
            .article-sidebar {
                position: static;
                margin-top: 2rem;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .nav-actions-mobile {
                display: flex !important;
            }
        }
        @media (max-width: 767.98px) {
            .article-hero {
                padding: var(--spacing-md) 0;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 0.6rem;
                font-size: 0.78rem;
            }
            .article-cover img {
                min-height: 180px;
            }
            .stats-bar {
                padding: 1.5rem 1rem;
            }
            .cta-section {
                padding: 2rem 1.2rem;
                border-radius: var(--radius-lg);
            }
            .btn-cta-secondary {
                margin-left: 0;
                margin-top: 0.5rem;
            }
            .fab-promo {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }
        }
        @media (max-width: 519.98px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .navbar-brand {
                font-size: 0.9rem;
            }
            .navbar-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .article-hero h1 {
                font-size: 1.3rem;
                line-height: 1.35;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
                padding: 1.2rem 0.8rem;
            }
            .stat-block .stat-value {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .step-item {
                flex-direction: column;
                gap: 0.6rem;
            }
            .related-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A0A0A;
            --bg-secondary: #171717;
            --bg-tertiary: #1F1F1F;
            --accent-primary: #EA580C;
            --accent-secondary: #EF4444;
            --accent-soft: #FDBA74;
            --text-primary: #FFFFFF;
            --text-secondary: #A3A3A3;
            --text-muted: #71717A;
            --border-color: #2E2E2E;
            --border-light: #3F3F3F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-fire: linear-gradient(135deg, #EA580C 0%, #EF4444 100%);
            --gradient-fire-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.12) 100%);
            --gradient-warm: linear-gradient(135deg, rgba(20, 20, 20, 0.95) 0%, rgba(31, 31, 31, 0.92) 100%);
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--accent-primary);
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Section Base ===== */
        .section-pad {
            padding: var(--spacing-xl) 0;
        }

        .section-pad-sm {
            padding: var(--spacing-lg) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }

        .section-title {
            margin-bottom: 0.9rem;
            text-align: left;
            font-weight: 800;
            font-size: 1.8rem;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 720px;
            text-align: left;
            margin-bottom: 2rem;
        }

        /* ===== Navbar ===== */
        .navbar-custom {
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.7rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }

        .navbar-custom.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .navbar-nav {
            gap: 0.25rem;
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.55rem 0.9rem;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
        }

        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0.4rem 0.65rem;
            color: var(--text-primary);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='white' stroke-linecap='round' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .nav-actions {
            gap: 0.6rem;
            margin-left: 1.25rem;
        }

        .nav-actions-mobile {
            gap: 0.5rem;
        }

        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.1rem;
            border-radius: 8px;
            border: 1px solid rgba(234, 88, 12, 0.5);
            color: var(--accent-soft);
            font-size: 0.88rem;
            font-weight: 600;
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.08);
        }

        .btn-signup {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.5rem 1.25rem;
            border-radius: 8px;
            background: var(--gradient-fire);
            color: #fff;
            font-size: 0.88rem;
            font-weight: 700;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 0 16px rgba(234, 88, 12, 0.25);
        }

        .btn-signup:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 0 22px rgba(234, 88, 12, 0.4);
        }

        /* ===== Hero ===== */
        .hero-category {
            position: relative;
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(10, 10, 10, 0.97) 0%, rgba(23, 23, 23, 0.95) 55%, rgba(31, 31, 31, 0.9) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/48ecef745ffc77fb.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            pointer-events: none;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 10, 0.75) 0%, rgba(10, 10, 10, 0.55) 50%, rgba(10, 10, 10, 0.8) 100%);
            pointer-events: none;
        }

        .hero-category .container {
            position: relative;
            z-index: 1;
        }

        .hero-category .hero-content {
            padding: 2rem 0;
        }

        .hero-category h1 {
            font-size: 2.2rem;
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 1.1rem;
            color: var(--text-primary);
            max-width: 650px;
        }

        .hero-category .hero-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 600px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1.5rem;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            padding: 0.45rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .hero-badge i {
            color: var(--accent-primary);
            font-size: 0.8rem;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2rem;
            border-radius: 12px;
            background: var(--gradient-fire);
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            border: none;
            transition: all var(--transition);
            box-shadow: 0 4px 20px rgba(234, 88, 12, 0.35);
        }

        .btn-hero-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(234, 88, 12, 0.5);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 1.75rem;
            border-radius: 12px;
            border: 1px solid var(--border-light);
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.03);
            transition: all var(--transition);
        }

        .btn-hero-outline:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.06);
        }

        .hero-rank-panel {
            background: var(--gradient-warm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-md);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .hero-rank-panel .rank-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.2rem;
            padding-bottom: 0.9rem;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-rank-panel .rank-title {
            font-weight: 700;
            font-size: 0.95rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .hero-rank-panel .rank-title i {
            color: var(--accent-primary);
        }

        .hero-rank-panel .rank-live {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-soft);
            background: rgba(234, 88, 12, 0.12);
            padding: 0.3rem 0.75rem;
            border-radius: 50px;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }

        .rank-live-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #22C55E;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        .rank-flight-list {
            list-style: none;
            padding: 0;
            margin: 0;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .rank-flight-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 0.7rem 1rem;
            transition: all var(--transition);
        }

        .rank-flight-item:hover {
            border-color: rgba(234, 88, 12, 0.4);
            background: rgba(234, 88, 12, 0.06);
        }

        .rank-flight-item .flight-id {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-muted);
        }

        .rank-flight-item .flight-multiplier {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent-soft);
        }

        .rank-flight-item .flight-time {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .rank-stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.75rem;
            margin-top: 1.2rem;
            padding-top: 1.2rem;
            border-top: 1px solid var(--border-color);
        }

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

        .rank-stat-value {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-primary);
        }

        .rank-stat-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 0.15rem;
        }

        /* ===== Cards ===== */
        .card-custom {
            background: var(--gradient-warm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            height: 100%;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card-custom::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-fire);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .card-custom:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }

        .card-custom:hover::before {
            opacity: 1;
        }

        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-primary);
            margin-bottom: 1rem;
            border: 1px solid rgba(234, 88, 12, 0.2);
        }

        .card-custom h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            text-align: left;
        }

        .card-custom p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
            text-align: left;
        }

        /* ===== Steps ===== */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .step-item {
            display: flex;
            gap: 1.25rem;
            align-items: flex-start;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            transition: all var(--transition);
        }

        .step-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
            background: rgba(234, 88, 12, 0.04);
        }

        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-fire);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: #fff;
            box-shadow: 0 2px 12px rgba(234, 88, 12, 0.3);
        }

        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.35rem;
            text-align: left;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
            text-align: left;
        }

        /* ===== Channel matrix ===== */
        .channel-card {
            background: var(--gradient-warm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            height: 100%;
            transition: all var(--transition);
            color: var(--text-primary);
        }

        .channel-card:hover {
            border-color: rgba(234, 88, 12, 0.35);
            color: var(--text-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
        }

        .channel-card .channel-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-primary);
            flex-shrink: 0;
        }

        .channel-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.2rem;
        }

        .channel-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .channel-card .arrow-go {
            margin-left: auto;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .channel-card:hover .arrow-go {
            color: var(--accent-primary);
            transform: translateX(4px);
        }

        /* ===== Scenario / error lists ===== */
        .scene-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }

        .scene-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1rem 1.25rem;
            transition: all var(--transition);
        }

        .scene-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
            background: rgba(234, 88, 12, 0.04);
        }

        .scene-item i {
            color: var(--accent-primary);
            font-size: 1rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        .scene-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
        }

        .scene-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.55;
        }

        .error-item {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.9rem 1.1rem;
            border-radius: var(--radius-sm);
            background: rgba(239, 68, 68, 0.06);
            border: 1px solid rgba(239, 68, 68, 0.2);
            margin-bottom: 0.75rem;
            transition: all var(--transition);
        }

        .error-item:hover {
            background: rgba(239, 68, 68, 0.1);
            border-color: rgba(239, 68, 68, 0.35);
        }

        .error-item i {
            color: var(--accent-secondary);
            font-size: 0.95rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        .error-item h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.15rem;
        }

        .error-item p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .stat-card {
            background: var(--gradient-warm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.25rem;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-card:hover {
            border-color: rgba(234, 88, 12, 0.3);
            box-shadow: var(--shadow-glow);
        }

        .stat-card .stat-value {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-primary);
            letter-spacing: -0.02em;
            margin-bottom: 0.25rem;
        }

        .stat-card .stat-label {
            font-size: 0.82rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--spacing-xl) 0;
        }

        .accordion-custom .accordion-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: 0.85rem;
            overflow: hidden;
        }

        .accordion-custom .accordion-header {
            margin: 0;
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 1.15rem 1.5rem;
            border: none;
            box-shadow: none;
            transition: all var(--transition);
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: var(--gradient-fire-soft);
            color: var(--accent-primary);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(234, 88, 12, 0.4);
            outline-offset: -2px;
        }

        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        .accordion-custom .accordion-body {
            background: var(--bg-primary);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
            padding: 1.25rem 1.5rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.08) 50%, rgba(10, 10, 10, 0.95) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }

        .cta-panel {
            background: var(--gradient-warm);
            border: 1px solid rgba(234, 88, 12, 0.3);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            align-items: center;
            justify-content: space-between;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(234, 88, 12, 0.1);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.6rem;
            letter-spacing: -0.01em;
        }

        .cta-panel p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            max-width: 560px;
            line-height: 1.6;
        }

        .cta-panel .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            z-index: 1;
        }

        /* ===== News list ===== */
        .news-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
        }

        .news-card {
            background: var(--gradient-warm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            border-color: rgba(234, 88, 12, 0.3);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .news-card .news-body {
            padding: 1.25rem 1.25rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card .news-category {
            display: inline-block;
            font-size: 0.68rem;
            font-weight: 700;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.3rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.7rem;
            border: 1px solid rgba(234, 88, 12, 0.2);
            align-self: flex-start;
        }

        .news-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }

        .news-card .news-excerpt {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.55;
            flex: 1;
            margin-bottom: 0.75rem;
        }

        .news-card .news-time {
            font-size: 0.72rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .news-card .news-time i {
            font-size: 0.65rem;
        }

        .empty-news {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 3rem 1rem;
            background: var(--bg-secondary);
            border: 1px dashed var(--border-light);
            border-radius: var(--radius-md);
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* ===== Footer ===== */
        .footer-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 2rem;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
            max-width: 360px;
        }

        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-primary);
            padding-left: 3px;
        }

        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAB ===== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(10, 10, 10, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(10, 10, 10, 0.85), rgba(10, 10, 10, 0.85)), linear-gradient(135deg, #EA580C, #EF4444);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-soft);
            font-size: 1.2rem;
            cursor: pointer;
            opacity: 0.75;
            transition: all var(--transition);
            box-shadow: 0 0 20px rgba(234, 88, 12, 0.35);
            animation: fab-breathe 3s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        .fab-support:hover {
            opacity: 1;
            color: #fff;
            box-shadow: 0 0 28px rgba(234, 88, 12, 0.55);
            animation-play-state: paused;
        }

        .fab-support:active {
            transform: scale(0.94);
            animation-play-state: paused;
        }

        .fab-support .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-primary);
            border: 2px solid var(--bg-primary);
            animation: fab-badge-pulse 2s ease-in-out infinite;
        }

        @keyframes fab-badge-pulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.6); }
            50% { box-shadow: 0 0 0 6px rgba(234, 88, 12, 0); }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-xl: 3.5rem;
                --spacing-lg: 2.25rem;
            }

            .hero-category h1 {
                font-size: 1.85rem;
            }

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

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

        @media (max-width: 768px) {
            :root {
                --spacing-xl: 2.5rem;
                --spacing-lg: 2rem;
                --spacing-md: 1.25rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .hero-category h1 {
                font-size: 1.55rem;
            }

            .hero-category .hero-sub {
                font-size: 0.95rem;
            }

            .hero-rank-panel {
                margin-top: 2rem;
            }

            .scene-list {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.9rem;
            }

            .cta-panel {
                padding: 1.75rem;
                flex-direction: column;
                text-align: left;
                align-items: flex-start;
            }

            .cta-panel h2 {
                font-size: 1.35rem;
            }

            .news-list-grid {
                grid-template-columns: 1fr;
            }

            .nav-actions-mobile {
                display: flex !important;
            }

            .nav-actions {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .hero-category h1 {
                font-size: 1.35rem;
            }

            .hero-badge {
                font-size: 0.7rem;
                padding: 0.35rem 0.75rem;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }

            .rank-stats-row {
                gap: 0.5rem;
            }

            .rank-stat-value {
                font-size: 1rem;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }

            .stat-card .stat-value {
                font-size: 1.4rem;
            }

            .step-item {
                padding: 1rem 1.1rem;
                gap: 0.85rem;
            }

            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }

            .fab-support {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 1rem;
                border-radius: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A0A0A;
            --bg-secondary: #171717;
            --bg-tertiary: #1F1F1F;
            --accent-primary: #EA580C;
            --accent-secondary: #EF4444;
            --accent-soft: #FDBA74;
            --text-primary: #FFFFFF;
            --text-secondary: #A3A3A3;
            --text-muted: #71717A;
            --border-color: #2E2E2E;
            --border-light: #3F3F3F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-fire: linear-gradient(135deg, #EA580C 0%, #EF4444 100%);
            --gradient-fire-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.12) 100%);
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-soft);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-primary);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .text-muted-custom {
            color: var(--text-muted) !important;
        }
        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .section-pad {
            padding: var(--spacing-xl) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-lg) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }
        .section-title {
            margin-bottom: 0.9rem;
            text-align: left;
            font-weight: 800;
            font-size: 1.75rem;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 720px;
            text-align: left;
            margin-bottom: 2rem;
        }
        .navbar-custom {
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.7rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .navbar-custom.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 0.25rem;
        }
        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.55rem 0.9rem;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0.4rem 0.65rem;
            color: var(--text-primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.7%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-left: 0.75rem;
        }
        .nav-actions-mobile {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-login {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 8px;
            border: 1px solid var(--border-light);
            background: transparent;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-primary);
            color: var(--accent-soft);
        }
        .btn-signup {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            padding: 0.5rem 1.25rem;
            border-radius: 8px;
            background: var(--gradient-fire);
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: var(--shadow-glow);
        }
        .btn-signup:hover {
            opacity: 0.92;
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-fire {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 0.95rem;
            color: #fff;
            background: var(--gradient-fire);
            border: none;
            padding: 0.8rem 1.75rem;
            border-radius: 50px;
            transition: all var(--transition);
            box-shadow: var(--shadow-glow);
        }
        .btn-fire:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(234, 88, 12, 0.4);
            color: #fff;
        }
        .btn-outline-fire {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--accent-soft);
            background: transparent;
            border: 1px solid rgba(234, 88, 12, 0.4);
            padding: 0.8rem 1.75rem;
            border-radius: 50px;
            transition: all var(--transition);
        }
        .btn-outline-fire:hover {
            background: var(--gradient-fire-soft);
            border-color: var(--accent-primary);
            color: var(--text-primary);
        }
        .hero-category {
            position: relative;
            padding: 4rem 0 3rem;
            background: linear-gradient(180deg, rgba(234, 88, 12, 0.08) 0%, rgba(10, 10, 10, 0) 100%);
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(239, 68, 68, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-soft);
            background: rgba(234, 88, 12, 0.1);
            border: 1px solid rgba(234, 88, 12, 0.25);
            padding: 0.45rem 1rem;
            border-radius: 50px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title-category {
            font-size: 2.25rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
            text-align: left;
        }
        .hero-subtitle-category {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 680px;
            margin-bottom: 1.5rem;
            text-align: left;
        }
        .hero-actions-category {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-bottom: 1.5rem;
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;}
        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .hero-stat-item i {
            color: var(--accent-primary);
            font-size: 1rem;
        }
        .hero-stat-item strong {
            color: var(--text-primary);
            font-weight: 700;
            margin-right: 0.2rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.25rem;
        }
        .feature-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: all var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            border-color: rgba(234, 88, 12, 0.5);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .feature-card .icon-circle {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .steps-block {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 2rem;
            margin-top: 1.5rem;
        }
        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .steps-list li {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .steps-list .step-num {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        .steps-list strong {
            color: var(--text-primary);
        }
        .payment-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .payment-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.25rem;
            text-align: center;
            transition: all var(--transition);
        }
        .payment-item:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-sm);
        }
        .payment-item i {
            font-size: 1.6rem;
            color: var(--accent-soft);
            margin-bottom: 0.5rem;
        }
        .payment-item span {
            display: block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 600;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
        }
        .faq-question {
            padding: 1rem 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 0.75rem;
        }
        .faq-question i {
            color: var(--accent-primary);
            transition: transform var(--transition);
        }
        .faq-question.collapsed i {
            transform: rotate(-90deg);
        }
        .faq-answer {
            padding: 0 1.25rem 1.25rem;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.65;
        }
        .cta-band {
            background: linear-gradient(135deg, rgba(234, 88, 12, 0.15) 0%, rgba(239, 68, 68, 0.08) 100%);
            border: 1px solid rgba(234, 88, 12, 0.3);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(234, 88, 12, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-band h2 {
            font-size: 1.75rem;
            font-weight: 900;
            margin-bottom: 0.75rem;
        }
        .cta-band p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            max-width: 600px;
        }
        .news-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .news-card:hover {
            border-color: var(--accent-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .news-card-body {
            padding: 1.25rem;
        }
        .news-card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .news-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
        }
        .news-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .footer-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-primary);
        }
        .copyright {
            border-top: 1px solid var(--border-color);
            margin-top: 2rem;
            padding-top: 1.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            text-align: center;
        }
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 1.5rem;
            z-index: 1055;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--bg-tertiary);
            border: 2px solid var(--accent-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-soft);
            font-size: 1.3rem;
            box-shadow: 0 6px 25px rgba(234, 88, 12, 0.35);
            transition: all var(--transition);
        }
        .fab-support:hover {
            transform: scale(1.1);
            color: #fff;
            background: var(--accent-primary);
        }
        @media (max-width: 991.98px) {
            .nav-actions {
                display: none !important;
            }
            .nav-actions-mobile {
                display: flex !important;
            }
            .navbar-nav {
                padding: 1rem 0;
            }
            .navbar-nav .nav-link {
                padding: 0.75rem 1rem;
                font-size: 0.95rem;
            }
            .hero-title-category {
                font-size: 1.85rem;
            }
        }
        @media (max-width: 767.98px) {
            .section-pad {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .hero-category {
                padding: 3rem 0 2rem;
            }
            .hero-title-category {
                font-size: 1.6rem;
            }
            .cta-band {
                padding: 1.75rem;
            }
            .feature-grid,
            .payment-grid {
                grid-template-columns: 1fr;
            }
            .footer-section {
                padding: 2rem 0 1.5rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0A0A;
            --bg-secondary: #171717;
            --bg-tertiary: #1F1F1F;
            --accent-primary: #EA580C;
            --accent-secondary: #EF4444;
            --accent-soft: #FDBA74;
            --text-primary: #FFFFFF;
            --text-secondary: #A3A3A3;
            --text-muted: #71717A;
            --border-color: #2E2E2E;
            --border-light: #3F3F3F;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 4px 24px rgba(234, 88, 12, 0.25);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --gradient-fire: linear-gradient(135deg, #EA580C 0%, #EF4444 100%);
            --gradient-fire-soft: linear-gradient(135deg, rgba(234, 88, 12, 0.12) 0%, rgba(239, 68, 68, 0.12) 100%);
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--accent-soft);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-primary);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-primary);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .text-muted-custom {
            color: var(--text-muted) !important;
        }

        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Section Base ===== */
        .section-pad {
            padding: var(--spacing-xl) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-lg) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.25);
        }
        .section-title {
            margin-bottom: 0.9rem;
            text-align: left;
            font-weight: 800;
            font-size: 1.85rem;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.65;
            max-width: 720px;
            text-align: left;
            margin-bottom: 2rem;
        }

        /* ===== Navbar ===== */
        .navbar-custom {
            background: rgba(10, 10, 10, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 0.7rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: box-shadow var(--transition);
        }
        .navbar-custom.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.05rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 0.25rem;
        }
        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.55rem 0.9rem;
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-primary);
            background: var(--gradient-fire-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .navbar-toggler {
            border: 1px solid var(--border-light);
            border-radius: 8px;
            padding: 0.4rem 0.65rem;
            color: var(--text-primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px rgba(234, 88, 12, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .btn-login {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
            padding: 0.45rem 1rem;
            border: 1px solid var(--border-light);
            border-radius: 50px;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-block;
        }
        .btn-login:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.05);
        }
        .btn-signup {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            padding: 0.45rem 1.2rem;
            background: var(--gradient-fire);
            border-radius: 50px;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-block;
            box-shadow: var(--shadow-glow);
        }
        .btn-signup:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(234, 88, 12, 0.35);
        }
        .nav-actions-mobile {
            display: flex;
            gap: 0.5rem;
            align-items: center;
        }

        /* ===== Hero ===== */
        .hero-category {
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            background: radial-gradient(ellipse at 30% 20%, rgba(234, 88, 12, 0.08) 0%, transparent 55%),
                        radial-gradient(ellipse at 80% 80%, rgba(239, 68, 68, 0.05) 0%, transparent 50%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
            overflow: hidden;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -100px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(234, 88, 12, 0.04);
            filter: blur(60px);
            pointer-events: none;
        }
        .hero-category h1 {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1.1rem;
            color: var(--text-primary);
        }
        .hero-category .lead {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.65;
            margin-bottom: 1.75rem;
        }
        .hero-category .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .btn-fire {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 0.8rem 1.6rem;
            background: var(--gradient-fire);
            color: #fff;
            border-radius: 50px;
            border: none;
            transition: all var(--transition);
            box-shadow: var(--shadow-glow);
        }
        .btn-fire:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(234, 88, 12, 0.4);
        }
        .btn-outline-fire {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 1.6rem;
            border: 1px solid var(--border-light);
            color: var(--text-primary);
            border-radius: 50px;
            transition: all var(--transition);
            background: transparent;
        }
        .btn-outline-fire:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(234, 88, 12, 0.05);
        }
        .hero-visual-wrap {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            max-width: 340px;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .hero-visual-card img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .hero-visual-body {
            padding: 1.2rem 1.4rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .hero-visual-body .fps-badge {
            font-size: 0.7rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #fff;
            background: var(--gradient-fire);
            padding: 0.3rem 0.7rem;
            border-radius: 50px;
        }
        .hero-visual-body .code-value {
            font-weight: 800;
            color: var(--accent-soft);
            font-size: 1rem;
        }

        /* ===== Card Base ===== */
        .card-custom {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card-custom:hover {
            border-color: rgba(234, 88, 12, 0.35);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .card-custom .card-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--gradient-fire-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--accent-primary);
            margin-bottom: 0.9rem;
            border: 1px solid rgba(234, 88, 12, 0.2);
        }
        .card-custom h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .card-custom p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .badge-dato {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            padding: 0.25rem 0.6rem;
            border-radius: 50px;
            background: rgba(234, 88, 12, 0.1);
            color: var(--accent-soft);
            border: 1px solid rgba(234, 88, 12, 0.2);
            margin-bottom: 0.6rem;
        }

        /* ===== Steps ===== */
        .step-item {
            position: relative;
            padding-left: 3.5rem;
            margin-bottom: 1.75rem;
        }
        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background: var(--gradient-fire);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-glow);
        }
        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text-primary);
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
            max-width: 650px;
        }

        /* ===== Stats ===== */
        .stat-block {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.25rem;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-block:hover {
            border-color: rgba(234, 88, 12, 0.3);
        }
        .stat-value {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-primary);
            line-height: 1.2;
            margin-bottom: 0.2rem;
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== Testimonials ===== */
        .testimonial-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            height: 100%;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            border-color: rgba(234, 88, 12, 0.3);
            box-shadow: var(--shadow-glow);
        }
        .testimonial-card .quote-icon {
            color: var(--accent-primary);
            font-size: 1.4rem;
            margin-bottom: 0.6rem;
        }
        .testimonial-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0.9rem;
        }
        .testimonial-card .t-author {
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--text-primary);
        }
        .testimonial-card .t-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ===== Info list ===== */
        .info-list-item {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1rem 1.2rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            transition: all var(--transition);
        }
        .info-list-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
            transform: translateX(4px);
        }
        .info-list-item .info-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            border-radius: 8px;
            background: var(--gradient-fire-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 0.9rem;
        }
        .info-list-item .info-content h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 0.2rem;
            color: var(--text-primary);
        }
        .info-list-item .info-content p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.55;
        }

        /* ===== Category gate ===== */
        .cat-gate-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.3rem 1.5rem;
            height: 100%;
            display: block;
            transition: all var(--transition);
            color: var(--text-primary);
        }
        .cat-gate-card:hover {
            border-color: rgba(234, 88, 12, 0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
            color: var(--text-primary);
        }
        .cat-gate-card .gate-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--gradient-fire-soft);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-size: 1rem;
            margin-bottom: 0.7rem;
        }
        .cat-gate-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }
        .cat-gate-card p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(234, 88, 12, 0.3);
        }
        .faq-item .faq-question {
            width: 100%;
            padding: 1rem 1.25rem;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            cursor: pointer;
            gap: 1rem;
        }
        .faq-item .faq-question i {
            font-size: 0.85rem;
            color: var(--accent-primary);
            transition: transform var(--transition);
        }
        .faq-item .faq-answer {
            padding: 0 1.25rem 1rem;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: radial-gradient(ellipse at 50% 100%, rgba(234, 88, 12, 0.1) 0%, transparent 60%);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: var(--spacing-xl) 0;
        }
        .cta-panel {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(234, 88, 12, 0.08);
            filter: blur(40px);
        }
        .cta-panel h2 {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 0.7rem;
            color: var(--text-primary);
        }
        .cta-panel p {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        /* ===== Footer ===== */
        .footer-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-lg) 0 var(--spacing-sm);
        }
        .footer-brand {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--gradient-fire);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            color: #fff;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }
        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-primary);
            margin-bottom: 0.9rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links li a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .footer-links li a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.2rem;
            margin-top: 2rem;
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== FAB ===== */
        .fab-neon {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(10, 10, 10, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #EA580C, #EF4444) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-soft);
            box-shadow: 0 0 20px rgba(234, 88, 12, 0.3);
            cursor: pointer;
            transition: all 0.3s ease;
            animation: fabPulse 2.5s ease-in-out infinite;
            min-width: 56px;
            min-height: 56px;
            text-decoration: none;
        }
        .fab-neon:hover {
            color: #fff;
            box-shadow: 0 0 28px rgba(234, 88, 12, 0.5);
            transform: scale(1.05);
        }
        .fab-neon .fab-notify {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #EF4444;
            border: 2px solid #0A0A0A;
            animation: notifyBlink 1.5s ease-in-out infinite;
        }
        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(234, 88, 12, 0.25); }
            50% { box-shadow: 0 0 32px rgba(234, 88, 12, 0.45); }
        }
        @keyframes notifyBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --spacing-xl: 3.5rem;
            }
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.55rem;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-xl: 2.75rem;
                --spacing-lg: 1.75rem;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category .lead {
                font-size: 0.98rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .hero-visual-card img {
                height: 300px;
            }
            .cta-panel {
                padding: 1.75rem 1.25rem;
            }
            .cta-panel h2 {
                font-size: 1.4rem;
            }
            .stat-value {
                font-size: 1.6rem;
            }
            .navbar-nav {
                padding: 1rem 0;
            }
            .nav-actions-mobile {
                gap: 0.35rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 0.8rem;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.5rem;
            }
            .hero-category .lead {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .hero-visual-wrap {
                margin-top: 1.5rem;
            }
            .btn-fire,
            .btn-outline-fire {
                padding: 0.7rem 1.2rem;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .step-item {
                padding-left: 2.8rem;
            }
            .step-number {
                width: 2rem;
                height: 2rem;
                font-size: 0.95rem;
            }
            .fab-neon {
                width: 48px;
                height: 48px;
                min-width: 48px;
                min-height: 48px;
                font-size: 1.2rem;
                left: 0.75rem;
                bottom: 5rem;
                border-radius: 12px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}