/* roulang page: index */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }

        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }

        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            color: var(--text-body);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(255, 107, 53, 0.12);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent-neon-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-neon-cyan);
        }

        .nav-cta-btn {
            background: var(--gradient-main);
            color: #fff !important;
            font-weight: 700 !important;
            padding: 10px 20px !important;
            border-radius: var(--btn-radius) !important;
            box-shadow: 0 0 12px rgba(255, 107, 53, 0.3);
            transition: all var(--transition-smooth) !important;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-glow-orange) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #FF7D4F 0%, #E84035 100%) !important;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            padding: 6px;
            z-index: 1001;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(10, 14, 23, 0.96);
            backdrop-filter: blur(16px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 20px;
            padding: 40px 20px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 1.2rem;
            color: var(--text-body);
            padding: 12px 24px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            font-weight: 500;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
            background: rgba(255, 107, 53, 0.15);
        }

        .mobile-menu .mobile-cta {
            background: var(--gradient-main);
            color: #fff !important;
            font-weight: 700 !important;
            border-radius: var(--btn-radius);
            padding: 14px 28px !important;
            box-shadow: var(--shadow-glow-orange);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 64px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .hero-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.22;
            z-index: 0;
            filter: saturate(0.6) brightness(0.7);
        }

        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient-hero-overlay);
            z-index: 1;
        }

        .hero-grid-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            opacity: 0.06;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
            background-size: 40px 40px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-left h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .hero-left h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
        }

        .hero-left .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--btn-radius);
            font-size: 1rem;
            box-shadow: 0 0 16px rgba(255, 107, 53, 0.35);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
            filter: brightness(1.1);
        }

        .btn-secondary {
            background: transparent;
            color: var(--accent-neon-cyan);
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--btn-radius);
            font-size: 1rem;
            border: 1.5px solid var(--accent-neon-cyan);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.3);
            transform: translateY(-2px);
        }

        .hero-right {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }

        .progress-ring-container {
            position: relative;
            width: 200px;
            height: 200px;
            flex-shrink: 0;
        }

        .progress-ring {
            transform: rotate(-90deg);
            width: 200px;
            height: 200px;
        }

        .progress-ring .bg-circle {
            fill: none;
            stroke: rgba(55, 65, 81, 0.7);
            stroke-width: 10;
        }

        .progress-ring .fg-circle {
            fill: none;
            stroke: url(#progressGradient);
            stroke-width: 10;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .progress-center-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .progress-center-text .pc-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
        }

        .progress-center-text .pc-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .tier-preview-cards {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
            width: 100%;
        }

        .tier-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 16px 18px;
            text-align: center;
            flex: 1;
            min-width: 100px;
            max-width: 140px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            backdrop-filter: blur(6px);
        }

        .tier-card:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .tier-card.featured {
            border-color: rgba(255, 107, 53, 0.6);
            box-shadow: 0 0 14px rgba(255, 107, 53, 0.2);
            background: rgba(31, 41, 55, 0.85);
        }

        .tier-card .tier-name {
            font-weight: 700;
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .tier-card .tier-price {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--accent-neon-orange);
        }

        .tier-card .tier-desc {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .hero-data-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .hero-badge {
            background: rgba(255, 140, 0, 0.12);
            border: 1px solid rgba(255, 140, 0, 0.3);
            border-radius: 20px;
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-neon-orange);
            white-space: nowrap;
        }

        /* ========== SECTION COMMON ========== */
        .section-block {
            padding: 70px 0;
            position: relative;
            z-index: 1;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-neon-cyan);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: var(--font-h2);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            padding-left: 20px;
            line-height: 1.3;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--accent-neon-cyan);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-body);
            max-width: 700px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            gap: 20px;
        }

        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card-grid.mixed {
            grid-template-columns: 2fr 1fr 1fr;
        }

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(4px);
        }

        .info-card:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .info-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            background: rgba(255, 107, 53, 0.15);
            color: var(--accent-neon-orange);
        }

        .info-card .card-title {
            font-size: var(--font-h3);
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }

        .info-card .card-desc {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .data-badge {
            display: inline-block;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 20px;
            padding: 4px 12px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent-neon-cyan);
            white-space: nowrap;
            position: absolute;
            top: 20px;
            right: 20px;
        }

        .data-badge.orange {
            background: rgba(255, 140, 0, 0.1);
            border-color: rgba(255, 140, 0, 0.3);
            color: var(--accent-neon-orange);
        }

        /* ========== SERIES NAV ========== */
        .series-nav-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 14px;
        }

        .series-nav-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 22px 16px;
            text-align: center;
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .series-nav-item:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            background: rgba(31, 41, 55, 0.9);
        }

        .series-nav-item .sn-icon {
            font-size: 1.8rem;
            color: var(--accent-neon-orange);
        }

        .series-nav-item .sn-title {
            font-weight: 600;
            color: #fff;
            font-size: 0.9rem;
        }

        /* ========== SHOWCASE ========== */
        .showcase-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 18px;
        }

        .showcase-main {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
            position: relative;
            grid-row: span 2;
        }

        .showcase-main:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .showcase-main img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .showcase-main .showcase-info {
            padding: 20px 24px;
        }

        .showcase-main .showcase-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .showcase-main .showcase-desc {
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .showcase-sub {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 20px;
            transition: all var(--transition-smooth);
            cursor: pointer;
            display: flex;
            gap: 14px;
            align-items: center;
        }

        .showcase-sub:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .showcase-sub img {
            width: 70px;
            height: 70px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .showcase-sub .ss-title {
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
        }

        .showcase-sub .ss-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== NEWS ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(55, 65, 81, 0.5);
            transition: all var(--transition-fast);
            cursor: pointer;
            align-items: flex-start;
        }

        .news-item:hover {
            background: rgba(255, 255, 255, 0.02);
            padding-left: 8px;
        }

        .news-item .news-date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            position: relative;
        }

        .news-item .news-date::before {
            content: '';
            position: absolute;
            left: 0;
            top: 2px;
            bottom: 2px;
            width: 3px;
            background: var(--accent-neon-cyan);
            border-radius: 2px;
            box-shadow: 0 0 6px rgba(0, 229, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .news-item:hover .news-date::before {
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.7);
            width: 4px;
        }

        .news-item .news-date .nd-day {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }

        .news-item .news-date .nd-month {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .news-item .news-content {
            flex: 1;
        }

        .news-item .news-title {
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            margin-bottom: 4px;
        }

        .news-item .news-summary {
            font-size: 0.88rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        .news-item .news-readmore {
            display: inline-block;
            margin-top: 6px;
            font-size: 0.85rem;
            color: var(--accent-neon-cyan);
            font-weight: 500;
            transition: all var(--transition-fast);
        }

        .news-item .news-readmore:hover {
            color: #fff;
            text-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }

        .news-item .news-readmore i {
            transition: transform var(--transition-fast);
            margin-left: 4px;
            font-size: 0.7rem;
        }

        .news-item .news-readmore:hover i {
            transform: translateX(4px);
        }

        /* ========== PRICING / TIER ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .pricing-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            backdrop-filter: blur(4px);
        }

        .pricing-card:hover {
            transform: translateY(-4px);
        }

        .pricing-card.featured {
            border-color: rgba(255, 107, 53, 0.5);
            box-shadow: 0 0 22px rgba(255, 107, 53, 0.25);
            background: rgba(31, 41, 55, 0.9);
            transform: scale(1.03);
        }

        .pricing-card.featured:hover {
            transform: scale(1.05);
            box-shadow: var(--shadow-glow-orange);
        }

        .pricing-card .pc-name {
            font-weight: 700;
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .pricing-card .pc-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-neon-orange);
            margin-bottom: 16px;
        }

        .pricing-card .pc-features {
            list-style: none;
            text-align: left;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: var(--text-body);
            line-height: 2;
        }

        .pricing-card .pc-features li::before {
            content: '✓ ';
            color: var(--accent-neon-cyan);
            font-weight: 700;
        }

        .pricing-card .btn-primary {
            width: 100%;
            justify-content: center;
        }

        .featured-tag {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 18px;
            border-radius: 20px;
            box-shadow: 0 0 12px rgba(255, 107, 53, 0.4);
            white-space: nowrap;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-default);
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 0;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            transition: all var(--transition-fast);
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
        }

        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
        }

        .faq-item.open .faq-dot {
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.8);
            background: var(--accent-neon-orange);
            width: 12px;
            height: 12px;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
            padding: 0 20px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            background: rgba(255, 255, 255, 0.015);
            border-radius: 0 0 8px 8px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 20px;
        }

        /* ========== GUARANTEE ========== */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .guarantee-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 24px 18px;
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .guarantee-item:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }

        .guarantee-item .gi-icon {
            font-size: 2rem;
            color: var(--accent-neon-cyan);
            margin-bottom: 10px;
        }

        .guarantee-item .gi-title {
            font-weight: 600;
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .guarantee-item .gi-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== MEMBER ENTRY ========== */
        .member-entry-block {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .member-entry-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(255, 107, 53, 0.06) 0%, transparent 60%);
            z-index: 0;
            pointer-events: none;
        }

        .member-entry-block>* {
            position: relative;
            z-index: 1;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-card-solid);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 107, 53, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 229, 255, 0.05) 0%, transparent 60%);
            z-index: 0;
            pointer-events: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080c14;
            padding: 50px 0 30px;
            position: relative;
            z-index: 1;
            border-top: 1px solid rgba(55, 65, 81, 0.5);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }

        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(55, 65, 81, 0.4);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--accent-neon-cyan);
        }

        .footer-logo-text {
            font-weight: 700;
            color: #fff;
            font-size: 1.1rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .hero-left .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero-right {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: center;
            }
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.mixed {
                grid-template-columns: 1fr 1fr;
            }
            .series-nav-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .showcase-grid {
                grid-template-columns: 1fr 1fr;
            }
            .showcase-main {
                grid-row: span 1;
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .pricing-card.featured:hover {
                transform: scale(1.02);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .progress-ring-container {
                width: 150px;
                height: 150px;
            }
            .progress-ring {
                width: 150px;
                height: 150px;
            }
            .progress-center-text .pc-num {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
            .section-block {
                padding: 40px 0;
            }
            .hero-section {
                min-height: auto;
                padding-bottom: 40px;
            }
            .card-grid.cols-2,
            .card-grid.cols-3,
            .card-grid.cols-4,
            .card-grid.mixed {
                grid-template-columns: 1fr;
            }
            .series-nav-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .showcase-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .pricing-card.featured {
                transform: scale(1);
            }
            .pricing-card.featured:hover {
                transform: scale(1.01);
            }
            .guarantee-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-right {
                flex-direction: column;
                align-items: center;
            }
            .tier-preview-cards {
                flex-direction: column;
                align-items: center;
            }
            .tier-card {
                max-width: 100%;
                width: 100%;
            }
            .hero-data-badges {
                justify-content: center;
            }
            .section-title {
                padding-left: 14px;
                font-size: 1.3rem;
            }
            .section-title::before {
                width: 3px;
                top: 4px;
                bottom: 4px;
            }
            .info-card {
                padding: 20px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-item .news-date {
                width: auto;
                text-align: left;
                display: flex;
                align-items: center;
                gap: 8px;
            }
            .news-item .news-date::before {
                display: none;
            }
            .member-entry-block {
                padding: 24px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .hero-section {
                padding-top: 56px;
            }
            .site-nav {
                height: 56px;
            }
            .nav-inner {
                height: 56px;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .hero-left h1 {
                font-size: 1.5rem;
            }
            .hero-left .hero-subtitle {
                font-size: 0.9rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .progress-ring-container {
                width: 120px;
                height: 120px;
            }
            .progress-ring {
                width: 120px;
                height: 120px;
            }
            .progress-center-text .pc-num {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .pricing-card {
                padding: 20px 16px;
            }
            .pricing-card .pc-price {
                font-size: 1.6rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
        }
        @media (max-width: 640px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }
        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }
        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(255, 107, 53, 0.1);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent-neon-cyan);
            border-radius: 3px;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
        }
        .nav-cta-btn {
            display: inline-block !important;
            padding: 10px 22px !important;
            background: var(--gradient-main) !important;
            color: #fff !important;
            border-radius: var(--btn-radius) !important;
            font-weight: 700 !important;
            font-size: 0.9rem !important;
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth) !important;
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(255, 107, 53, 0.6) !important;
            transform: translateY(-1px);
            color: #fff !important;
            background: var(--gradient-main) !important;
        }
        .hamburger-btn {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: 6px;
            z-index: 1001;
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                padding: 20px 0;
                gap: 0;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                border-bottom: 2px solid var(--border-default);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links li a {
                padding: 14px 20px;
                font-size: 1rem;
                border-radius: 0;
            }
            .nav-cta-btn {
                margin: 8px auto;
                display: inline-block !important;
                width: auto;
            }
            .hamburger-btn {
                display: block;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            padding: 90px 0 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--accent-neon-cyan);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb span {
            margin: 0 6px;
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--text-body);
        }

        /* ========== HERO ========== */
        .category-hero {
            position: relative;
            padding: 40px 0 70px;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--gradient-hero-overlay);
            z-index: 0;
            pointer-events: none;
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            filter: brightness(0.6);
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .category-hero .hero-text h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .category-hero .hero-text h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero .hero-text .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .category-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(31, 41, 55, 0.8);
            border: 1px solid var(--border-default);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-neon-cyan);
            white-space: nowrap;
        }
        .category-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .category-hero .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            border-radius: var(--btn-radius);
            font-size: 1rem;
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(255, 107, 53, 0.6);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: var(--accent-neon-cyan);
            font-weight: 700;
            border-radius: var(--btn-radius);
            font-size: 1rem;
            border: 2px solid var(--accent-neon-cyan);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: var(--shadow-glow-cyan);
        }
        .category-hero .hero-image-wrapper {
            position: relative;
            z-index: 2;
            border-radius: var(--card-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border-default);
        }
        .category-hero .hero-image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--card-radius-lg);
        }

        @media (max-width: 768px) {
            .category-hero .hero-content {
                grid-template-columns: 1fr;
                gap: 30px;
                text-align: center;
            }
            .category-hero .hero-text .hero-subtitle {
                max-width: 100%;
                margin: 0 auto 24px;
            }
            .category-hero .hero-badges {
                justify-content: center;
            }
            .category-hero .hero-cta-group {
                justify-content: center;
            }
            .category-hero .hero-image-wrapper {
                max-width: 400px;
                margin: 0 auto;
            }
            .category-hero {
                min-height: auto;
                padding: 30px 0 50px;
            }
        }

        /* ========== SECTION STYLES ========== */
        .section {
            padding: 60px 0;
            position: relative;
            z-index: 1;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
            padding-left: 18px;
            margin-bottom: 10px;
        }
        .section-header h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 60%;
            background: var(--accent-neon-cyan);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .section-header .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 650px;
            line-height: 1.7;
            margin-top: 6px;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid.alt {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            position: relative;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-neon-cyan);
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-neon-cyan);
            margin-bottom: 16px;
        }
        .card h3 {
            font-size: var(--font-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card .card-badge {
            display: inline-block;
            padding: 5px 12px;
            background: rgba(255, 140, 0, 0.15);
            color: var(--accent-neon-orange);
            border-radius: 14px;
            font-size: 0.8rem;
            font-weight: 700;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-neon-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            margin-top: 8px;
        }
        .card .card-link:hover {
            gap: 10px;
            color: #fff;
        }
        .card .card-link i {
            transition: transform var(--transition-fast);
        }
        .card .card-link:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.alt {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 640px) {
            .card-grid,
            .card-grid.alt {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 22px 18px;
            }
        }

        /* ========== SCENARIO BLOCK ========== */
        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            padding: 30px 0;
        }
        .scenario-block.reverse {
            direction: rtl;
        }
        .scenario-block.reverse>* {
            direction: ltr;
        }
        .scenario-block .scenario-image {
            border-radius: var(--card-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-default);
        }
        .scenario-block .scenario-image img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--card-radius-lg);
        }
        .scenario-block .scenario-text h3 {
            font-size: var(--font-h3);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .scenario-block .scenario-text p {
            color: var(--text-body);
            line-height: 1.85;
            font-size: 1rem;
            margin-bottom: 14px;
        }
        .scenario-block .scenario-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .scenario-block .scenario-stat {
            text-align: center;
        }
        .scenario-block .scenario-stat .stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-neon-cyan);
        }
        .scenario-block .scenario-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .scenario-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .scenario-block .scenario-image {
                max-width: 450px;
                margin: 0 auto;
            }
            .scenario-block.reverse {
                direction: ltr;
            }
        }

        /* ========== PROCESS / STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 15%;
            width: 70%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-neon-cyan), var(--accent-neon-orange), var(--accent-neon-cyan));
            opacity: 0.5;
            z-index: 0;
            display: none;
        }
        @media (min-width: 769px) {
            .process-steps::before {
                display: block;
            }
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px 18px;
            transition: all var(--transition-smooth);
        }
        .process-step:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            margin-bottom: 14px;
            box-shadow: var(--shadow-glow-orange);
        }
        .process-step h4 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
            font-size: 1rem;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item.open {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 18px 20px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
        }
        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            margin-top: 5px;
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-dot {
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.8);
            background: var(--accent-neon-orange);
        }
        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-smooth);
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-top: 3px;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-neon-cyan);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 20px 0 40px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.75;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 14px 20px 18px 40px;
            border-top-color: var(--border-default);
            background: rgba(255, 255, 255, 0.015);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 70px 0;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-inner {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 50px 30px;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--gradient-hero-overlay);
            opacity: 0.5;
            pointer-events: none;
            z-index: 0;
        }
        .cta-section .cta-inner>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-body);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 36px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080c14;
            border-top: 1px solid var(--border-default);
            padding: 50px 0 20px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }
        .footer-logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-default);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            justify-content: center;
            text-align: center;
        }
        .footer-bottom a {
            color: var(--accent-neon-cyan);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-col:first-child {
                grid-column: 1 / -1;
            }
        }

        /* ========== MISC ========== */
        .badge-pill {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent-neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .text-gradient {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .highlight-box {
            background: rgba(255, 107, 53, 0.08);
            border-left: 3px solid var(--accent-neon-orange);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 16px 0;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
        }
        @media (max-width: 640px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background: radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }
        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }
        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }
        @keyframes glowPulse {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 229, 255, 0.55);
            }
        }
        @keyframes badgePulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.04);
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(0, 229, 255, 0.08);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-neon-cyan);
            animation: glowPulse 2.5s ease-in-out infinite;
        }
        .nav-cta-btn {
            background: var(--gradient-main) !important;
            color: #fff !important;
            font-weight: 700 !important;
            border-radius: var(--btn-radius) !important;
            padding: 8px 18px !important;
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth) !important;
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 30px rgba(255, 107, 53, 0.6) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #FF8C40 0%, #E8382A 100%) !important;
        }
        .hamburger-btn {
            display: none;
            background: none;
            font-size: 1.5rem;
            color: #fff;
            padding: 6px 10px;
            border-radius: 6px;
            z-index: 1001;
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.96);
                backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 20px 0;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                z-index: 999;
                border-bottom: 2px solid var(--border-default);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li a {
                padding: 12px 24px;
                font-size: 1rem;
                text-align: center;
                width: 100%;
                border-radius: 0;
            }
            .hamburger-btn {
                display: block;
            }
            .nav-cta-btn {
                margin: 8px 20px;
                text-align: center;
                width: auto;
                display: inline-block;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            min-height: 75vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 64px;
            background: var(--bg-deep);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            z-index: 0;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient-hero-overlay);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 60px 20px;
            width: 100%;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent-neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.35);
            border-radius: 20px;
            padding: 7px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            animation: badgePulse 3s ease-in-out infinite;
        }
        .hero-badge .badge-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            margin-right: 8px;
            animation: glowPulse 2s ease-in-out infinite;
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: var(--gradient-main);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* ========== CARDS ========== */
        .card-glow {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .card-glow:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-neon-cyan);
        }
        .card-glow.featured {
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
        }
        .card-glow.featured::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: var(--card-radius);
            background: var(--gradient-main);
            z-index: -1;
            opacity: 0.7;
        }
        .card-glow.featured::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--card-radius);
            background: var(--bg-card);
            z-index: 0;
        }
        .card-glow.featured>* {
            position: relative;
            z-index: 1;
        }
        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-neon-cyan);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.3px;
            border: 1px solid rgba(0, 229, 255, 0.25);
        }
        .data-badge.orange {
            background: rgba(255, 140, 0, 0.1);
            color: var(--accent-neon-orange);
            border-color: rgba(255, 140, 0, 0.25);
        }

        /* ========== BUTTONS ========== */
        .btn-primary {
            display: inline-block;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            border-radius: var(--btn-radius);
            padding: 12px 28px;
            font-size: 1rem;
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth);
            text-align: center;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(255, 107, 53, 0.55);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--accent-neon-cyan);
            border: 2px solid var(--accent-neon-cyan);
            font-weight: 600;
            border-radius: var(--btn-radius);
            padding: 10px 26px;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            text-align: center;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.08);
            box-shadow: var(--shadow-glow-cyan);
        }
        .btn-text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-neon-cyan);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .btn-text-link:hover {
            gap: 12px;
            color: #fff;
        }
        .btn-text-link i {
            transition: transform var(--transition-fast);
        }
        .btn-text-link:hover i {
            transform: translateX(4px);
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-question {
            width: 100%;
            background: none;
            color: var(--text-primary);
            font-size: 1rem;
            font-weight: 600;
            padding: 18px 24px;
            text-align: left;
            display: flex;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            border: none;
            outline: none;
            transition: all var(--transition-fast);
        }
        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-dot {
            box-shadow: 0 0 14px rgba(0, 229, 255, 0.7);
            transform: scale(1.5);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            background: rgba(0, 0, 0, 0.2);
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            border-top-color: var(--border-default);
            padding: 16px 24px 20px 44px;
        }
        .faq-answer p {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080c14;
            border-top: 1px solid var(--border-default);
            padding: 48px 0 24px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }
        .footer-logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-default);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            justify-content: center;
            text-align: center;
        }
        .footer-bottom a {
            color: var(--accent-neon-cyan);
            font-size: 0.8rem;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .breadcrumb a {
            color: var(--accent-neon-cyan);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 600;
        }

        /* ========== SCENE BLOCK ========== */
        .scene-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .scene-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .scene-block.reverse {
            direction: rtl;
        }
        .scene-block.reverse>* {
            direction: ltr;
        }
        .scene-img-wrapper {
            border-radius: var(--card-radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-default);
            position: relative;
        }
        .scene-img-wrapper img {
            width: 100%;
            height: auto;
            border-radius: var(--card-radius-lg);
        }
        .scene-img-wrapper::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--card-radius-lg);
            border: 2px solid transparent;
            pointer-events: none;
            transition: border-color var(--transition-smooth);
        }
        .scene-img-wrapper:hover::after {
            border-color: rgba(0, 229, 255, 0.4);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-neon-cyan);
            letter-spacing: -0.5px;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ========== MISC ========== */
        .section-spacing {
            padding: 64px 0;
        }
        @media (max-width: 640px) {
            .section-spacing {
                padding: 40px 0;
            }
        }
        .text-gradient {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .glow-border-bottom {
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, transparent, var(--accent-neon-cyan), transparent) 1;
        }

/* roulang page: category2 */
:root {
        --bg-deep: #0A0E17;
        --bg-card: rgba(31, 41, 55, 0.7);
        --bg-card-solid: #1F2937;
        --bg-nav: #0A0E17;
        --text-primary: #FFFFFF;
        --text-body: #D1D5DB;
        --text-muted: #9CA3AF;
        --border-default: #374151;
        --accent-neon-cyan: #00E5FF;
        --accent-neon-orange: #FF8C00;
        --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
        --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
        --card-radius: 16px;
        --card-radius-lg: 20px;
        --btn-radius: 8px;
        --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
        --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
        --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
        --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
        --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        --font-h1: 3rem;
        --font-h2: 2.25rem;
        --font-h3: 1.5rem;
        --font-body: 1rem;
        --line-height-body: 1.75;
        --container-max: 1280px;
    }

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

    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }

    body {
        font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
        background-color: var(--bg-deep);
        color: var(--text-body);
        line-height: var(--line-height-body);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        min-height: 100vh;
        overflow-x: hidden;
        padding-top: 64px;
    }

    body::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: 0;
        background: radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
            radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
            radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
        background-size: 100% 100%;
    }

    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 20px;
        position: relative;
        z-index: 1;
    }

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

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

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

    button:focus-visible,
    a:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--accent-neon-cyan);
        outline-offset: 3px;
        border-radius: 4px;
    }

    /* ========== NAVIGATION ========== */
    .site-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 1000;
        background: var(--bg-nav);
        height: 64px;
        border-bottom: 2px solid transparent;
        transition: all var(--transition-smooth);
    }

    .site-nav::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
        opacity: 0.85;
        z-index: 1;
        animation: navGlowLine 4s ease-in-out infinite;
    }

    @keyframes navGlowLine {
        0%,
        100% {
            opacity: 0.7;
        }
        50% {
            opacity: 1;
        }
    }

    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 64px;
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 20px;
        position: relative;
        z-index: 2;
    }

    .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.35rem;
        font-weight: 700;
        color: #fff;
        white-space: nowrap;
        letter-spacing: 0.5px;
    }

    .nav-logo .logo-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: var(--gradient-main);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        color: #fff;
        flex-shrink: 0;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 8px;
        list-style: none;
    }

    .nav-links li a {
        display: block;
        padding: 8px 16px;
        color: var(--text-body);
        font-size: 0.95rem;
        font-weight: 500;
        border-radius: 6px;
        position: relative;
        transition: all var(--transition-fast);
        white-space: nowrap;
    }

    .nav-links li a:hover {
        color: #fff;
        background: rgba(255, 255, 255, 0.04);
    }

    .nav-links li a.active {
        color: #fff;
        font-weight: 600;
    }

    .nav-links li a.active::after {
        content: '';
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 28px;
        height: 3px;
        background: var(--accent-neon-cyan);
        border-radius: 3px;
        box-shadow: 0 0 10px var(--accent-neon-cyan), 0 0 20px rgba(0, 229, 255, 0.5);
    }

    .nav-cta-btn {
        background: var(--gradient-main) !important;
        color: #fff !important;
        font-weight: 600 !important;
        border-radius: var(--btn-radius) !important;
        padding: 10px 20px !important;
        box-shadow: 0 0 12px rgba(255, 107, 53, 0.35);
        transition: all var(--transition-smooth) !important;
    }

    .nav-cta-btn:hover {
        box-shadow: 0 0 22px rgba(255, 107, 53, 0.55) !important;
        transform: translateY(-1px);
        background: var(--gradient-main) !important;
        color: #fff !important;
    }

    .hamburger-btn {
        display: none;
        background: transparent;
        color: #fff;
        font-size: 1.5rem;
        padding: 8px;
        border-radius: 6px;
        z-index: 1001;
    }

    .hamburger-btn:hover {
        background: rgba(255, 255, 255, 0.08);
    }

    /* ========== BREADCRUMB ========== */
    .breadcrumb-bar {
        padding: 14px 0;
        font-size: 0.85rem;
        color: var(--text-muted);
        border-bottom: 1px solid rgba(55, 65, 81, 0.5);
        margin-bottom: 0;
    }

    .breadcrumb-bar a {
        color: var(--accent-neon-cyan);
        transition: color var(--transition-fast);
    }

    .breadcrumb-bar a:hover {
        color: #fff;
    }

    .breadcrumb-bar span {
        margin: 0 6px;
        color: #555;
    }

    /* ========== HERO BANNER ========== */
    .hero-banner {
        position: relative;
        padding: 70px 0 80px;
        background: var(--bg-deep);
        overflow: hidden;
    }

    .hero-banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--gradient-hero-overlay);
        z-index: 0;
        pointer-events: none;
    }

    .hero-banner .hero-bg-img {
        position: absolute;
        top: 0;
        right: 0;
        width: 55%;
        height: 100%;
        object-fit: cover;
        opacity: 0.3;
        z-index: 0;
        mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 30%, transparent 100%);
        -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 30%, transparent 100%);
    }

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

    .hero-badge {
        display: inline-block;
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 0.85rem;
        font-weight: 600;
        background: rgba(0, 229, 255, 0.1);
        color: var(--accent-neon-cyan);
        border: 1px solid rgba(0, 229, 255, 0.25);
        margin-bottom: 20px;
    }

    /* ========== CARDS ========== */
    .card-glow {
        background: var(--bg-card);
        border: 1px solid var(--border-default);
        border-radius: var(--card-radius);
        padding: 28px;
        transition: all var(--transition-smooth);
        box-shadow: var(--shadow-card);
        position: relative;
        overflow: hidden;
    }

    .card-glow:hover {
        border-color: var(--accent-neon-cyan);
        box-shadow: var(--shadow-hover);
        transform: translateY(-4px);
    }

    .card-glow .card-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        background: rgba(255, 107, 53, 0.15);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        color: var(--accent-neon-orange);
        margin-bottom: 16px;
    }

    .data-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.8rem;
        font-weight: 700;
        background: rgba(0, 229, 255, 0.08);
        color: var(--accent-neon-cyan);
        border: 1px solid rgba(0, 229, 255, 0.2);
        white-space: nowrap;
    }

    .data-badge.orange {
        background: rgba(255, 140, 0, 0.08);
        color: var(--accent-neon-orange);
        border: 1px solid rgba(255, 140, 0, 0.2);
    }

    /* ========== BUTTONS ========== */
    .btn-primary {
        display: inline-block;
        background: var(--gradient-main);
        color: #fff !important;
        font-weight: 600;
        padding: 14px 32px;
        border-radius: var(--btn-radius);
        box-shadow: 0 0 16px rgba(255, 107, 53, 0.35);
        transition: all var(--transition-smooth);
        text-align: center;
        cursor: pointer;
        border: none;
        font-size: 1rem;
    }

    .btn-primary:hover {
        box-shadow: 0 0 28px rgba(255, 107, 53, 0.55);
        transform: translateY(-2px);
    }

    .btn-outline {
        display: inline-block;
        background: transparent;
        color: var(--accent-neon-cyan) !important;
        font-weight: 600;
        padding: 13px 30px;
        border-radius: var(--btn-radius);
        border: 2px solid var(--accent-neon-cyan);
        transition: all var(--transition-smooth);
        text-align: center;
        cursor: pointer;
        font-size: 1rem;
    }

    .btn-outline:hover {
        background: rgba(0, 229, 255, 0.08);
        box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
    }

    .btn-text-link {
        color: var(--accent-neon-cyan);
        font-weight: 500;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: all var(--transition-fast);
        cursor: pointer;
    }

    .btn-text-link i {
        transition: transform var(--transition-fast);
    }

    .btn-text-link:hover {
        color: #fff;
    }

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

    /* ========== FAQ ========== */
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-default);
        border-radius: var(--card-radius);
        margin-bottom: 12px;
        overflow: hidden;
        transition: all var(--transition-smooth);
        cursor: pointer;
    }

    .faq-item:hover {
        border-color: rgba(0, 229, 255, 0.35);
    }

    .faq-question {
        padding: 20px 24px;
        display: flex;
        align-items: center;
        gap: 14px;
        color: #fff;
        font-weight: 600;
        font-size: 1.05rem;
        user-select: none;
    }

    .faq-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--accent-neon-cyan);
        flex-shrink: 0;
        box-shadow: 0 0 8px var(--accent-neon-cyan);
        transition: all var(--transition-smooth);
    }

    .faq-item.open .faq-dot {
        box-shadow: 0 0 18px var(--accent-neon-cyan), 0 0 35px rgba(0, 229, 255, 0.5);
        width: 12px;
        height: 12px;
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.4s ease;
        padding: 0 24px;
        color: var(--text-muted);
        line-height: 1.7;
        border-top: 1px solid transparent;
    }

    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 18px 24px;
        border-top: 1px solid var(--border-default);
    }

    /* ========== FOOTER ========== */
    .site-footer {
        background: #080c16;
        border-top: 1px solid rgba(55, 65, 81, 0.6);
        padding: 50px 0 30px;
        margin-top: 60px;
        position: relative;
        z-index: 1;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
        gap: 30px;
        margin-bottom: 30px;
    }

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

    .footer-col a {
        display: block;
        color: var(--text-muted);
        font-size: 0.85rem;
        padding: 5px 0;
        transition: color var(--transition-fast);
    }

    .footer-col a:hover {
        color: var(--accent-neon-cyan);
    }

    .footer-logo-text {
        font-size: 1.3rem;
        font-weight: 700;
        color: #fff;
    }

    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        align-items: center;
        padding-top: 20px;
        border-top: 1px solid rgba(55, 65, 81, 0.5);
        font-size: 0.78rem;
        color: var(--text-muted);
    }

    .footer-bottom a {
        color: var(--accent-neon-cyan);
        font-size: 0.78rem;
    }

    .footer-bottom a:hover {
        color: #fff;
    }

    /* ========== SECTION STYLES ========== */
    .section-title {
        font-size: var(--font-h2);
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
        position: relative;
        display: inline-block;
    }

    .section-title::after {
        content: '';
        position: absolute;
        bottom: -6px;
        left: 0;
        width: 50px;
        height: 3px;
        background: var(--gradient-main);
        border-radius: 3px;
    }

    .section-subtitle {
        color: var(--text-muted);
        font-size: 1.05rem;
        margin-bottom: 40px;
        max-width: 700px;
    }

    .section-padding {
        padding: 70px 0;
    }

    /* ========== PROCESS STEPS ========== */
    .process-step {
        display: flex;
        align-items: flex-start;
        gap: 20px;
        padding: 20px 0;
        position: relative;
    }

    .process-step::before {
        content: '';
        position: absolute;
        left: 22px;
        top: 52px;
        width: 2px;
        height: calc(100% - 20px);
        background: linear-gradient(180deg, var(--accent-neon-cyan) 0%, transparent 100%);
    }

    .process-step:last-child::before {
        display: none;
    }

    .step-number {
        width: 46px;
        height: 46px;
        border-radius: 50%;
        background: var(--gradient-main);
        color: #fff;
        font-weight: 700;
        font-size: 1.1rem;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        box-shadow: 0 0 16px rgba(255, 107, 53, 0.4);
        z-index: 1;
    }

    /* ========== RESPONSIVE ========== */
    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }
        .hero-banner .hero-bg-img {
            width: 100%;
            opacity: 0.2;
        }
        :root {
            --font-h1: 2.2rem;
            --font-h2: 1.7rem;
            --font-h3: 1.2rem;
        }
    }

    @media (max-width: 768px) {
        .nav-links {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            width: 100%;
            background: rgba(10, 14, 23, 0.96);
            backdrop-filter: blur(12px);
            flex-direction: column;
            padding: 20px;
            gap: 4px;
            z-index: 999;
            border-bottom: 2px solid rgba(0, 229, 255, 0.3);
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links li a {
            padding: 12px 16px;
            font-size: 1rem;
            width: 100%;
            text-align: center;
        }
        .hamburger-btn {
            display: block;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        :root {
            --font-h1: 1.8rem;
            --font-h2: 1.45rem;
            --font-h3: 1.1rem;
        }
        .hero-banner {
            padding: 40px 0 50px;
        }
        .section-padding {
            padding: 40px 0;
        }
    }

    @media (max-width: 520px) {
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .card-glow {
            padding: 20px;
        }
        .btn-primary,
        .btn-outline {
            padding: 12px 24px;
            font-size: 0.9rem;
            width: 100%;
            text-align: center;
        }
        .hero-banner {
            padding: 30px 0 40px;
        }
    }

/* roulang page: category4 */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
        }
        @media (max-width: 640px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            box-sizing: border-box;
        }
        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-smooth);
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }
        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }
        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(0, 229, 255, 0.08);
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent-neon-cyan);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
        }
        .nav-cta-btn {
            display: inline-block !important;
            padding: 9px 20px !important;
            background: var(--gradient-main) !important;
            color: #fff !important;
            font-weight: 700 !important;
            border-radius: var(--btn-radius) !important;
            font-size: 0.9rem !important;
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth) !important;
        }
        .nav-cta-btn:hover {
            box-shadow: 0 0 28px rgba(255, 107, 53, 0.6) !important;
            transform: translateY(-1px);
            color: #fff !important;
            background: var(--gradient-main) !important;
        }
        .hamburger-btn {
            display: none;
            background: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 6px;
            z-index: 1001;
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                flex-direction: column;
                align-items: center;
                gap: 6px;
                padding: 24px 20px;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.4s ease;
                z-index: 999;
                border-bottom: 1px solid var(--border-default);
            }
            .nav-links.open {
                max-height: 560px;
                padding: 24px 20px;
            }
            .nav-links li a {
                font-size: 1rem;
                padding: 12px 20px;
                width: 100%;
                text-align: center;
            }
            .hamburger-btn {
                display: block;
            }
            .nav-cta-btn {
                margin-top: 8px;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding-top: 64px;
            overflow: hidden;
            background-color: var(--bg-deep);
        }
        .hero-bg-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.22;
            z-index: 0;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient-hero-overlay);
            z-index: 1;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 40px 20px;
        }
        .hero-text h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin: 0 0 16px;
        }
        .hero-text h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-body);
            margin: 0 0 28px;
            line-height: 1.7;
            max-width: 520px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 20px;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-neon-cyan);
            white-space: nowrap;
        }
        .hero-badge i {
            font-size: 0.9rem;
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--btn-radius);
            box-shadow: var(--shadow-glow-orange);
            transition: all var(--transition-smooth);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(255, 107, 53, 0.6);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: var(--accent-neon-cyan);
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--btn-radius);
            border: 2px solid var(--accent-neon-cyan);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: var(--shadow-glow-cyan);
        }
        .hero-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
        }
        .hero-panel h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .hero-panel .panel-subtitle {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .time-slot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 20px;
        }
        .time-slot {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-default);
            border-radius: 10px;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 0.9rem;
            color: var(--text-body);
            font-weight: 500;
        }
        .time-slot:hover {
            border-color: var(--accent-neon-cyan);
            background: rgba(0, 229, 255, 0.06);
            color: #fff;
        }
        .time-slot.selected {
            border-color: var(--accent-neon-cyan);
            background: rgba(0, 229, 255, 0.12);
            color: #fff;
            box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
        }
        .time-slot i {
            color: var(--accent-neon-cyan);
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 24px 16px;
            }
            .hero-section {
                min-height: auto;
                padding-bottom: 40px;
            }
            .hero-text h1 {
                font-size: var(--font-h1);
            }
            .time-slot-grid {
                grid-template-columns: 1fr;
            }
            .hero-panel {
                padding: 20px;
            }
        }

        /* ========== SECTION STYLES ========== */
        .section {
            padding: 64px 0;
            position: relative;
            z-index: 1;
        }
        .section-dark {
            background: rgba(15, 20, 30, 0.5);
        }
        .section-title {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 50px;
            height: 3px;
            border-radius: 3px;
            background: var(--gradient-main);
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin: 0 0 40px;
            max-width: 600px;
            line-height: 1.6;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-title::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-neon-cyan);
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card h3 {
            font-size: var(--font-h3);
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px;
        }
        .card p {
            color: var(--text-body);
            font-size: 0.95rem;
            margin: 0;
            line-height: 1.65;
        }
        .card-badge {
            display: inline-block;
            background: rgba(255, 140, 0, 0.15);
            color: var(--accent-neon-orange);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 12px;
            margin-top: 12px;
            letter-spacing: 0.3px;
        }
        .card-img-top {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 16px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .card-grid,
            .card-grid.cols-2,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 20px;
            }
        }

        /* ========== CASE CARDS ========== */
        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 0;
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }
        .case-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .case-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .case-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .case-card-body p {
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 0 0 12px;
            flex: 1;
        }
        .case-stats {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .case-stat {
            font-size: 0.8rem;
            color: var(--accent-neon-cyan);
            font-weight: 700;
            background: rgba(0, 229, 255, 0.08);
            padding: 5px 10px;
            border-radius: 6px;
        }
        .case-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-neon-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap var(--transition-fast);
        }
        .case-link:hover {
            gap: 10px;
        }
        .case-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .case-link:hover i {
            transform: translateX(4px);
        }

        /* ========== PROCESS ========== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: process;
        }
        .process-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .process-item:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .process-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            box-shadow: var(--shadow-glow-orange);
        }
        .process-item h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin: 0 0 6px;
        }
        .process-item p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .process-list {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item.open {
            border-color: rgba(0, 229, 255, 0.5);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.08);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 20px;
            background: none;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
        }
        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
        }
        .faq-item.open .faq-dot {
            box-shadow: 0 0 18px rgba(0, 229, 255, 0.8);
            background: var(--accent-neon-orange);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            color: var(--text-body);
            font-size: 0.9rem;
            line-height: 1.7;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 20px;
            border-top-color: var(--border-default);
            background: rgba(255, 255, 255, 0.015);
        }
        .faq-arrow {
            margin-left: auto;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-neon-cyan);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-card-solid);
            border-radius: var(--card-radius-lg);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--border-default);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 107, 53, 0.08);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
        }
        .cta-section p {
            color: var(--text-body);
            font-size: 1.05rem;
            margin: 0 0 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 36px;
        }

        /* ========== BRAND INTRO BLOCK ========== */
        .brand-intro-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 36px;
            box-shadow: var(--shadow-card);
            line-height: 1.8;
            color: var(--text-body);
            font-size: 1rem;
        }
        .brand-intro-card h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 0 12px;
        }
        .brand-intro-card p {
            margin: 0 0 12px;
        }
        .brand-intro-card p:last-child {
            margin-bottom: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080c14;
            padding: 48px 0 24px;
            border-top: 2px solid var(--border-default);
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }
        .footer-logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-default);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--accent-neon-cyan);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0 8px;
            position: relative;
            z-index: 2;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--accent-neon-cyan);
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 600;
        }
        .breadcrumb .sep {
            color: var(--border-default);
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-sm {
            gap: 16px;
        }
        .highlight-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-neon-cyan);
            line-height: 1;
        }
        .highlight-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .stats-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            align-items: center;
        }
        .stat-item {
            text-align: center;
        }
        @media (max-width: 640px) {
            .section {
                padding: 40px 0;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .brand-intro-card {
                padding: 24px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
        }

        @media (max-width: 640px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            padding-top: 64px;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }

        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }

        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-size: 0.93rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(0, 229, 255, 0.08);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent-neon-cyan);
            border-radius: 3px;
            box-shadow: 0 0 10px var(--accent-neon-cyan);
        }

        .nav-cta-btn {
            background: var(--gradient-main) !important;
            color: #fff !important;
            border-radius: var(--btn-radius) !important;
            padding: 9px 18px !important;
            font-weight: 600 !important;
            box-shadow: 0 0 14px rgba(255, 107, 53, 0.35);
            margin-left: 8px;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 22px rgba(255, 107, 53, 0.55) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #FF8C5A 0%, #E8453A 100%) !important;
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 6px;
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 0.85rem;
            }
            .nav-cta-btn {
                padding: 7px 14px !important;
                font-size: 0.85rem !important;
            }
        }

        @media (max-width: 768px) {
            .hamburger-btn {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                gap: 4px;
                transform: translateY(-120%);
                transition: transform var(--transition-smooth);
                border-bottom: 2px solid var(--border-default);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links li a {
                padding: 12px 20px;
                font-size: 1rem;
                width: 80%;
                text-align: center;
            }
            .nav-cta-btn {
                margin-left: 0;
                margin-top: 8px;
                width: 80%;
                text-align: center;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: 14px 0;
            font-size: 0.88rem;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-default);
            background: rgba(15, 20, 30, 0.6);
        }
        .breadcrumb-bar a {
            color: var(--accent-neon-cyan);
            transition: color var(--transition-fast);
        }
        .breadcrumb-bar a:hover {
            color: #fff;
        }
        .breadcrumb-bar span {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .breadcrumb-bar .current {
            color: var(--text-body);
            font-weight: 500;
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            padding: 60px 0 50px;
            background: var(--bg-deep);
            overflow: hidden;
        }
        .page-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }
        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: var(--gradient-hero-overlay);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-body);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(31, 41, 55, 0.8);
            border: 1px solid var(--border-default);
            border-radius: 50px;
            padding: 10px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            white-space: nowrap;
        }
        .hero-badge i {
            color: var(--accent-neon-cyan);
            font-size: 1rem;
        }
        .hero-badge .badge-num {
            color: var(--accent-neon-orange);
            font-weight: 800;
            font-size: 1.1rem;
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--gradient-main);
            border-radius: 2px;
            margin-top: 10px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 600px;
            line-height: 1.7;
        }

        /* ========== CARDS ========== */
        .card-glow {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .card-glow:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-neon-cyan);
        }
        .card-glow .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-neon-cyan);
        }
        .card-glow h3 {
            font-size: var(--font-h3);
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .card-glow p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .badge-capsule {
            display: inline-block;
            background: rgba(255, 140, 0, 0.15);
            color: var(--accent-neon-orange);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 50px;
            border: 1px solid rgba(255, 140, 0, 0.3);
            white-space: nowrap;
        }
        .badge-capsule.cyan {
            background: rgba(0, 229, 255, 0.12);
            color: var(--accent-neon-cyan);
            border: 1px solid rgba(0, 229, 255, 0.3);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 40px;
            margin: 0;
        }
        .deep-content-block h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .deep-content-block p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 14px;
        }
        .deep-content-block .highlight-stat {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 229, 255, 0.08);
            border-left: 3px solid var(--accent-neon-cyan);
            padding: 8px 14px;
            border-radius: 0 6px 6px 0;
            font-weight: 700;
            color: #fff;
            margin: 8px 0;
        }

        /* ========== PERFORMANCE METRICS ========== */
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .metric-card:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
        }
        .metric-card .metric-value {
            font-size: 3rem;
            font-weight: 800;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .metric-card .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== CASE CARDS ========== */
        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent-neon-cyan);
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .case-card .case-body {
            padding: 22px 20px;
        }
        .case-card .case-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }
        .case-card .case-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .case-card .case-body .case-stat {
            font-weight: 700;
            color: var(--accent-neon-orange);
            font-size: 0.9rem;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item.open {
            border-color: var(--accent-neon-cyan);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.1);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            transition: all var(--transition-fast);
            user-select: none;
        }
        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
        }
        .faq-item.open .faq-dot {
            box-shadow: 0 0 14px var(--accent-neon-cyan);
            background: #fff;
            width: 10px;
            height: 10px;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.75;
            border-top: 1px solid transparent;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 16px 22px 20px;
            border-top-color: var(--border-default);
        }
        .faq-question .faq-arrow {
            margin-left: auto;
            transition: transform var(--transition-smooth);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-neon-cyan);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-card-solid);
            border: 1px solid var(--border-default);
            border-radius: var(--card-radius-lg);
            padding: 48px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-body);
            margin-bottom: 24px;
            position: relative;
        }
        .btn-primary {
            display: inline-block;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--btn-radius);
            font-size: 1rem;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 18px rgba(255, 107, 53, 0.35);
            position: relative;
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(255, 107, 53, 0.55);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--accent-neon-cyan);
            border: 2px solid var(--accent-neon-cyan);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--btn-radius);
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0D1117;
            border-top: 1px solid var(--border-default);
            padding: 48px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-default);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }
        .footer-logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            align-items: center;
            justify-content: center;
        }
        .footer-bottom a {
            color: var(--accent-neon-cyan);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .deep-content-block {
                padding: 24px 18px;
            }
            .page-hero {
                padding: 40px 0 32px;
            }
            .hero-badge-row {
                gap: 10px;
            }
            .hero-badge {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .card-glow {
                padding: 20px 16px;
            }
            .metric-card .metric-value {
                font-size: 2.2rem;
            }
        }

/* roulang page: category6 */
:root {
            --bg-deep: #0A0E17;
            --bg-card: rgba(31, 41, 55, 0.7);
            --bg-card-solid: #1F2937;
            --bg-nav: #0A0E17;
            --text-primary: #FFFFFF;
            --text-body: #D1D5DB;
            --text-muted: #9CA3AF;
            --border-default: #374151;
            --accent-neon-cyan: #00E5FF;
            --accent-neon-orange: #FF8C00;
            --gradient-main: linear-gradient(135deg, #FF6B35 0%, #D92D20 100%);
            --gradient-hero-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.25) 0%, rgba(217, 45, 32, 0.18) 100%);
            --card-radius: 16px;
            --card-radius-lg: 20px;
            --btn-radius: 8px;
            --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 10px 25px rgba(0, 229, 255, 0.15);
            --shadow-glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-h1: 3rem;
            --font-h2: 2.25rem;
            --font-h3: 1.5rem;
            --font-body: 1rem;
            --line-height-body: 1.75;
            --container-max: 1280px;
        }

        @media (max-width: 1024px) {
            :root {
                --font-h1: 2.2rem;
                --font-h2: 1.7rem;
                --font-h3: 1.2rem;
            }
        }

        @media (max-width: 640px) {
            :root {
                --font-h1: 1.8rem;
                --font-h2: 1.45rem;
                --font-h3: 1.1rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Inter', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: var(--line-height-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                radial-gradient(ellipse at 15% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 60%, rgba(0, 229, 255, 0.03) 0%, transparent 55%),
                radial-gradient(ellipse at 40% 85%, rgba(255, 140, 0, 0.03) 0%, transparent 50%);
            background-size: 100% 100%;
        }

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 1;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-nav);
            height: 64px;
            border-bottom: 2px solid transparent;
            transition: all var(--transition-smooth);
        }

        .site-nav::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, var(--accent-neon-cyan) 30%, var(--accent-neon-orange) 60%, var(--accent-neon-cyan) 85%, transparent 100%);
            opacity: 0.85;
            z-index: 1;
            animation: navGlowLine 4s ease-in-out infinite;
        }

        @keyframes navGlowLine {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .nav-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 14px;
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: 6px;
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links li a.active {
            color: #fff;
            font-weight: 700;
            background: rgba(255, 107, 53, 0.1);
        }

        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent-neon-cyan);
            border-radius: 3px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
            animation: activeGlow 1.5s ease-in-out infinite;
        }

        @keyframes activeGlow {
            0%,
            100% {
                box-shadow: 0 0 8px rgba(0, 229, 255, 0.5);
            }
            50% {
                box-shadow: 0 0 18px rgba(0, 229, 255, 0.9);
            }
        }

        .nav-cta-btn {
            background: var(--gradient-main) !important;
            color: #fff !important;
            border-radius: var(--btn-radius) !important;
            padding: 9px 20px !important;
            font-weight: 700 !important;
            box-shadow: 0 0 14px rgba(255, 107, 53, 0.35);
            transition: all var(--transition-smooth) !important;
        }

        .nav-cta-btn:hover {
            box-shadow: 0 0 24px rgba(255, 107, 53, 0.6) !important;
            transform: translateY(-1px);
            background: linear-gradient(135deg, #ff7d52 0%, #e84535 100%) !important;
            color: #fff !important;
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            color: #fff;
            font-size: 1.4rem;
            padding: 8px;
            border-radius: 6px;
            transition: all var(--transition-fast);
        }

        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: rgba(10, 14, 23, 0.97);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: center;
                gap: 0;
                padding: 20px 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.4s ease;
                z-index: 999;
                border-bottom: 1px solid var(--border-default);
            }
            .nav-links.open {
                max-height: 600px;
                padding: 20px 0;
            }
            .nav-links li a {
                padding: 14px 24px;
                font-size: 1rem;
                width: 100%;
                text-align: center;
                border-radius: 0;
            }
            .nav-links li a.active::after {
                bottom: 4px;
                width: 40px;
            }
            .hamburger-btn {
                display: block;
            }
            .nav-cta-btn {
                margin-top: 8px;
            }
        }

        @media (max-width: 640px) {
            .nav-logo {
                font-size: 1.15rem;
                gap: 6px;
            }
            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                border-radius: 8px;
                font-size: 0.9rem;
            }
            .nav-cta-btn {
                padding: 8px 16px !important;
                font-size: 0.85rem !important;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--bg-deep);
            overflow: hidden;
            padding-top: 64px;
            z-index: 1;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--gradient-hero-overlay);
            z-index: 1;
            pointer-events: none;
        }

        .hero-bg-img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            opacity: 0.35;
            filter: brightness(0.6) saturate(1.2);
        }

        .hero-content-wrapper {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 60px 20px;
        }

        .hero-text-col h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin: 0 0 20px;
        }
        .hero-text-col h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-text-col .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--gradient-main);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--btn-radius);
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 18px rgba(255, 107, 53, 0.4);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(255, 107, 53, 0.65);
            transform: translateY(-2px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--accent-neon-cyan);
            border: 2px solid var(--accent-neon-cyan);
            padding: 14px 28px;
            border-radius: var(--btn-radius);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(0, 229, 255, 0.1);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
        }

        .hero-panel-col {
            background: var(--bg-card);
            border-radius: var(--card-radius-lg);
            padding: 32px;
            border: 1px solid var(--border-default);
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-card);
        }

        .hero-panel-col h3 {
            font-size: 1.25rem;
            color: #fff;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .hero-panel-col .panel-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }
        .tag-item {
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-default);
            color: var(--text-body);
            cursor: pointer;
            transition: all var(--transition-fast);
            background: rgba(31, 41, 55, 0.5);
            white-space: nowrap;
        }
        .tag-item:hover,
        .tag-item.selected {
            border-color: var(--accent-neon-cyan);
            color: var(--accent-neon-cyan);
            background: rgba(0, 229, 255, 0.08);
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
        }

        .freq-options {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .freq-opt {
            flex: 1;
            min-width: 70px;
            text-align: center;
            padding: 10px 12px;
            border-radius: var(--btn-radius);
            border: 1px solid var(--border-default);
            color: var(--text-body);
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(31, 41, 55, 0.5);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .freq-opt:hover,
        .freq-opt.selected {
            border-color: var(--accent-neon-orange);
            color: #fff;
            background: rgba(255, 140, 0, 0.15);
            box-shadow: 0 0 10px rgba(255, 140, 0, 0.2);
        }

        .hero-panel-col .btn-primary {
            width: 100%;
            justify-content: center;
            margin-top: 4px;
        }

        @media (max-width: 1024px) {
            .hero-content-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 40px 20px;
            }
            .hero-section {
                min-height: auto;
                padding-bottom: 40px;
            }
            .hero-text-col {
                text-align: center;
            }
            .hero-text-col .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta-group {
                justify-content: center;
            }
            .hero-panel-col {
                max-width: 500px;
                margin: 0 auto;
            }
        }

        @media (max-width: 640px) {
            .hero-section {
                padding-top: 56px;
            }
            .hero-content-wrapper {
                padding: 24px 16px;
                gap: 24px;
            }
            .hero-panel-col {
                padding: 20px;
                border-radius: var(--card-radius);
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-title {
            font-size: var(--font-h2);
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
            display: inline-block;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 60%;
            background: var(--accent-neon-cyan);
            border-radius: 2px;
            box-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 32px;
            max-width: 700px;
        }

        @media (max-width: 640px) {
            .section-title::before {
                left: -10px;
                width: 3px;
            }
        }

        /* ========== CARDS ========== */
        .card-glow {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--border-default);
            padding: 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .card-glow:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .card-glow .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: rgba(0, 229, 255, 0.1);
            color: var(--accent-neon-cyan);
        }
        .card-glow h3 {
            font-size: var(--font-h3);
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }
        .card-glow p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }
        .badge-data {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(255, 140, 0, 0.15);
            color: var(--accent-neon-orange);
            border: 1px solid rgba(255, 140, 0, 0.3);
            margin-top: 12px;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            background: var(--bg-card-solid);
            border-radius: var(--card-radius-lg);
            padding: 40px;
            border: 1px solid var(--border-default);
            position: relative;
            overflow: hidden;
        }
        .deep-content-block::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient-main);
            border-radius: 0 0 4px 4px;
        }
        .deep-content-block h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }
        .deep-content-block p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.85;
            margin: 0 0 12px;
        }

        @media (max-width: 640px) {
            .deep-content-block {
                padding: 24px 20px;
                border-radius: var(--card-radius);
            }
        }

        /* ========== IMAGE-TEXT ROW ========== */
        .img-text-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .img-text-row.reverse {
            direction: rtl;
        }
        .img-text-row.reverse>* {
            direction: ltr;
        }
        .img-text-row .img-col img {
            border-radius: var(--card-radius-lg);
            width: 100%;
            height: auto;
            object-fit: cover;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-default);
        }
        .img-text-row .text-col h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }
        .img-text-row .text-col p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0 0 10px;
        }

        @media (max-width: 768px) {
            .img-text-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .img-text-row.reverse {
                direction: ltr;
            }
            .img-text-row .img-col {
                order: -1;
            }
        }

        /* ========== FAQ ========== */
        .faq-item {
            border-bottom: 1px solid var(--border-default);
            padding: 18px 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border-default);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            color: #fff;
            font-size: 1.05rem;
            transition: color var(--transition-fast);
        }
        .faq-question .faq-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-neon-cyan);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 6px rgba(0, 229, 255, 0.5);
        }
        .faq-item.open .faq-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: transparent;
            border: 3px solid var(--accent-neon-orange);
            box-shadow: 0 0 16px rgba(255, 140, 0, 0.6);
            animation: faqDotPulse 1.5s ease-in-out infinite;
        }
        @keyframes faqDotPulse {
            0%,
            100% {
                box-shadow: 0 0 10px rgba(255, 140, 0, 0.4);
            }
            50% {
                box-shadow: 0 0 22px rgba(255, 140, 0, 0.75);
            }
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding-left: 20px;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 10px;
            padding-bottom: 6px;
        }
        .faq-item.open .faq-question {
            color: var(--accent-neon-cyan);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            background: var(--bg-card-solid);
            border-radius: var(--card-radius-lg);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--border-default);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(255, 107, 53, 0.08) 0%, transparent 65%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-body);
            font-size: 1.05rem;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1.1rem;
            padding: 16px 36px;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--card-radius);
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080c14;
            padding: 50px 0 20px;
            border-top: 1px solid var(--border-default);
            margin-top: 60px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin: 0 0 14px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.85rem;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-neon-cyan);
        }
        .footer-logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-default);
            padding-top: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 0.8rem;
        }
        .footer-bottom a:hover {
            color: var(--accent-neon-cyan);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--border-default);
            padding: 24px 28px;
            text-align: center;
            min-width: 140px;
            flex: 1;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .stat-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        @media (max-width: 640px) {
            .stat-card {
                min-width: 120px;
                padding: 18px 16px;
            }
            .stat-card .stat-num {
                font-size: 1.5rem;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border-radius: var(--card-radius);
            border: 1px solid var(--border-default);
            padding: 28px 20px;
            text-align: center;
            position: relative;
            transition: all var(--transition-smooth);
        }
        .process-step:hover {
            border-color: var(--accent-neon-cyan);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }
        .process-step h4 {
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin: 0 0 6px;
        }
        .process-step p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            margin: 0;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 480px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILITY ========== */
        .section-spacing {
            padding: 60px 0;
        }
        @media (max-width: 640px) {
            .section-spacing {
                padding: 36px 0;
            }
        }
        .text-accent-cyan {
            color: var(--accent-neon-cyan);
        }
        .text-accent-orange {
            color: var(--accent-neon-orange);
        }