/* roulang page: index */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 25, 45, 0.82);
            --bg-card-hover: rgba(20, 35, 60, 0.92);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6A7A8A;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.18);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 45px rgba(0, 240, 255, 0.22);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.06) 0%, transparent 45%), radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%), radial-gradient(ellipse at 50% 50%, rgba(15, 12, 32, 0.8) 0%, transparent 70%);
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(0, 240, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 240, 255, 0.018) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.45;
        }

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

        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: all 0.3s ease;
        }

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-primary);
            outline: none;
        }

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

        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            position: relative;
            z-index: 1;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.7rem 0;
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            padding: 0.5rem 0;
            border-bottom-color: rgba(0, 240, 255, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.2rem;
            flex-wrap: nowrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
            min-width: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            animation: brandPulse 3s ease-in-out infinite;
        }

        @keyframes brandPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 28px rgba(204, 255, 0, 0.55); }
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .brand-name span {
            color: var(--accent-cyan);
        }

        .brand-sub {
            font-size: 0.65rem;
            color: var(--text-silver);
            font-weight: 400;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 0.55rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
            letter-spacing: 0.01em;
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.5rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            border: none;
            background: transparent;
            cursor: pointer;
            border-radius: 8px;
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .btn-login:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .btn-signup {
            padding: 0.55rem 1.4rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-lime);
            border: none;
            cursor: pointer;
            border-radius: 8px;
            white-space: nowrap;
            transition: all 0.3s ease;
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.35);
        }

        .btn-signup:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.45);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 8px;
            color: var(--accent-cyan);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.18);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        /* Mobile full-screen menu */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(11, 26, 48, 0.97);
            backdrop-filter: blur(20px);
            z-index: 999;
            padding: 6rem 1.5rem 2rem;
            flex-direction: column;
            gap: 0.8rem;
            overflow-y: auto;
        }

        .mobile-nav-overlay.open {
            display: flex;
        }

        .mobile-nav-overlay a {
            display: block;
            padding: 1rem 1.2rem;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-white);
            border-radius: 12px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border-color: rgba(0, 240, 255, 0.2);
        }

        .mobile-nav-close {
            position: absolute;
            top: 1.2rem;
            right: 1.2rem;
            width: 46px;
            height: 46px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            color: var(--text-white);
            font-size: 1.4rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .mobile-nav-close:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: rotate(90deg);
        }

        /* ============ HERO ============ */
        .hero {
            padding: 8rem 0 4rem;
            position: relative;
            overflow: hidden;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.55) 0%, rgba(11, 26, 48, 0.75) 50%, rgba(11, 26, 48, 0.95) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 3rem;
            flex-wrap: wrap;
        }

        .hero-profile {
            flex: 0 0 280px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
            text-align: center;
            background: rgba(15, 12, 32, 0.6);
            padding: 2rem 1.5rem;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-neon);
            backdrop-filter: blur(14px);
        }

        .hero-avatar {
            width: 110px;
            height: 110px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            padding: 3px;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
        }

        .hero-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
            border: 3px solid var(--bg-primary);
        }

        .hero-profile-name {
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }

        .hero-profile-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.8rem;
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-lime);
            border: 1px solid var(--border-lime);
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .hero-stats {
            display: flex;
            gap: 1.2rem;
            margin-top: 0.3rem;
            flex-wrap: wrap;
            justify-content: center;
        }

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

        .hero-stat-num {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.7rem;
            color: var(--text-silver);
            font-weight: 400;
        }

        .hero-main {
            flex: 1;
            min-width: 280px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.4rem 1rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 30px;
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 1.2rem;
            text-transform: uppercase;
        }

        .hero-title {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text-white);
            margin-bottom: 1.2rem;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 1.8rem;
            max-width: 580px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.2rem;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-lime);
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.3);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.45);
            color: #000;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 1.8rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1.5px solid var(--border-glow);
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.35s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

        .hero-points {
            display: flex;
            gap: 1.5rem;
            margin-top: 1.8rem;
            flex-wrap: wrap;
        }

        .hero-point {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .hero-point i {
            color: var(--accent-lime);
            font-size: 0.95rem;
        }

        /* ============ SECTION COMMON ============ */
        section {
            position: relative;
            z-index: 1;
            padding: var(--space-xl) 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 0.7rem;
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 0.9rem;
            line-height: 1.25;
            text-align: left;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-silver);
            line-height: 1.65;
            max-width: 620px;
            margin-bottom: 2rem;
            text-align: left;
        }

        .section-header-flex {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .section-header-flex .section-desc {
            margin-bottom: 0;
            max-width: 500px;
        }

        /* ============ METRICS ============ */
        .metrics-section {
            background: rgba(15, 12, 32, 0.55);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
            padding: 2.8rem 0;
        }

        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .metric-item {
            text-align: center;
            padding: 1.6rem 1rem;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            transition: all 0.35s ease;
        }

        .metric-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            background: var(--bg-card-hover);
        }

        .metric-icon {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            margin-bottom: 0.6rem;
        }

        .metric-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        .metric-num span {
            color: var(--accent-lime);
            font-size: 1.2rem;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-top: 0.3rem;
        }

        /* ============ SCREENSHOTS / FEATURES ============ */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-bottom: 2.2rem;
        }

        .feature-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            transition: all 0.4s ease;
            position: relative;
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }

        .feature-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

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

        .feature-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 26, 48, 0.75) 100%);
        }

        .feature-card-body {
            padding: 1.2rem 1.3rem 1.4rem;
        }

        .feature-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .feature-card-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.55;
        }

        .feature-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            font-size: 0.68rem;
            font-weight: 700;
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid var(--border-lime);
            border-radius: 20px;
            margin-bottom: 0.6rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        /* ============ STEPS ============ */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            counter-reset: step-counter;
        }

        .step-item {
            padding: 1.8rem 1.5rem;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            position: relative;
            transition: all 0.4s ease;
            counter-increment: step-counter;
        }

        .step-item::before {
            content: counter(step-counter, decimal-leading-zero);
            position: absolute;
            top: 1rem;
            right: 1.2rem;
            font-size: 2.8rem;
            font-weight: 900;
            color: rgba(0, 240, 255, 0.1);
            letter-spacing: -0.04em;
            line-height: 1;
        }

        .step-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            background: var(--bg-card-hover);
        }

        .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
            transition: all 0.3s ease;
        }

        .step-item:hover .step-icon {
            background: rgba(0, 240, 255, 0.18);
            box-shadow: var(--shadow-neon);
        }

        .step-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .step-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.55;
        }

        /* ============ REWARDS ============ */
        .rewards-section {
            background: rgba(15, 12, 32, 0.55);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .rewards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .reward-card {
            padding: 1.8rem 1.4rem;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .reward-card::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -40%;
            width: 80%;
            height: 80%;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.06) 0%, transparent 70%);
            opacity: 0;
            transition: opacity 0.5s ease;
        }

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

        .reward-card:hover {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-lime);
            background: var(--bg-card-hover);
        }

        .reward-card.highlight {
            border-color: var(--border-lime);
            box-shadow: var(--shadow-lime);
        }

        .reward-card.highlight::after {
            content: 'PHỔ BIẾN';
            position: absolute;
            top: 0.9rem;
            right: 0.9rem;
            font-size: 0.6rem;
            font-weight: 800;
            color: #000;
            background: var(--accent-lime);
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .reward-card-img {
            height: 110px;
            width: 110px;
            margin: 0 auto 1rem;
            border-radius: 16px;
            overflow: hidden;
            border: 2px solid rgba(0, 240, 255, 0.2);
        }

        .reward-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .reward-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .reward-card-desc {
            font-size: 0.82rem;
            color: var(--text-silver);
            line-height: 1.5;
            margin-bottom: 1rem;
        }

        .reward-badge {
            display: inline-block;
            padding: 0.25rem 0.8rem;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid rgba(255, 215, 0, 0.3);
            border-radius: 20px;
        }

        /* ============ REVIEWS ============ */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .review-card {
            padding: 1.6rem 1.5rem;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            transition: all 0.35s ease;
        }

        .review-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            background: var(--bg-card-hover);
        }

        .review-stars {
            color: var(--accent-gold);
            font-size: 0.85rem;
            margin-bottom: 0.8rem;
            letter-spacing: 0.1em;
        }

        .review-text {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin-bottom: 1rem;
            font-style: italic;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: #000;
            flex-shrink: 0;
        }

        .review-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.2;
        }

        .review-location {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        /* ============ NEWS / CMS ============ */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2rem;
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.1rem 1.3rem;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.06);
            transition: all 0.35s ease;
            text-decoration: none;
        }

        .news-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            background: var(--bg-card-hover);
            color: var(--text-white);
        }

        .news-item-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1rem;
        }

        .news-item-content {
            flex: 1;
            min-width: 0;
        }

        .news-item-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 0.3rem;
            line-height: 1.4;
        }

        .news-item-summary {
            font-size: 0.8rem;
            color: var(--text-silver);
            line-height: 1.45;
            margin-bottom: 0.4rem;
        }

        .news-item-meta {
            display: flex;
            gap: 1rem;
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .news-item-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 1.6rem;
            position: sticky;
            top: 6rem;
        }

        .news-sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            padding-bottom: 0.6rem;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .news-sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .news-sidebar-item {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.6rem 0.8rem;
            border-radius: 8px;
            transition: all 0.3s ease;
            text-decoration: none;
            color: var(--text-silver);
            font-size: 0.82rem;
            font-weight: 500;
        }

        .news-sidebar-item:hover {
            background: rgba(0, 240, 255, 0.06);
            color: var(--accent-cyan);
        }

        .news-sidebar-item i {
            color: var(--accent-lime);
            font-size: 0.7rem;
        }

        /* ============ DOWNLOAD CTA / FORM ============ */
        .cta-section {
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.9) 0%, rgba(11, 26, 48, 0.9) 100%);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: var(--space-xl) 0;
        }

        .cta-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .cta-info .section-title {
            margin-bottom: 0.8rem;
        }

        .cta-list {
            margin-top: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }

        .cta-list-item {
            display: flex;
            align-items: flex-start;
            gap: 0.7rem;
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.5;
        }

        .cta-list-item i {
            color: var(--accent-lime);
            margin-top: 0.2rem;
            font-size: 0.9rem;
        }

        .cta-form {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-neon);
            backdrop-filter: blur(14px);
        }

        .cta-form-title {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .cta-form-sub {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1.1rem;
        }

        .form-group label {
            display: block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 0.4rem;
            letter-spacing: 0.02em;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            font-size: 0.9rem;
            color: var(--text-white);
            background: rgba(15, 12, 32, 0.7);
            border: 1.5px solid rgba(0, 240, 255, 0.15);
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
            background: rgba(15, 12, 32, 0.9);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
        }

        .form-privacy {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            font-size: 0.72rem;
            color: var(--text-muted);
            line-height: 1.45;
            margin-bottom: 1.2rem;
        }

        .form-privacy a {
            color: var(--accent-cyan);
        }

        .btn-submit {
            width: 100%;
            padding: 0.9rem;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-lime);
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 18px rgba(204, 255, 0, 0.25);
            letter-spacing: 0.02em;
        }

        .btn-submit:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 780px;
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .faq-item {
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.08);
            overflow: hidden;
            transition: all 0.35s ease;
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: all 0.3s ease;
            letter-spacing: 0.01em;
        }

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

        .faq-question i {
            color: var(--accent-cyan);
            font-size: 0.9rem;
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 1.4rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }

        .faq-answer p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin: 0;
        }

        /* ============ FLOATING CTA BAR ============ */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 990;
            background: rgba(11, 26, 48, 0.93);
            backdrop-filter: blur(16px);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 0.7rem 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
            transform: translateY(100%);
            transition: transform 0.5s ease;
        }

        .floating-cta.show {
            transform: translateY(0);
        }

        .floating-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .floating-cta-text {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .floating-cta-text i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        .floating-cta-btn {
            padding: 0.6rem 1.6rem;
            font-size: 0.88rem;
            font-weight: 700;
            color: #000;
            background: var(--accent-lime);
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 14px rgba(204, 255, 0, 0.3);
            white-space: nowrap;
        }

        .floating-cta-btn:hover {
            background: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.4);
        }

        /* ============ FAB ============ */
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 950;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.1rem 0.55rem 0.75rem;
            background: rgba(15, 12, 32, 0.65);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime)) 1;
            border-radius: 50px;
            color: var(--text-white);
            cursor: pointer;
            text-decoration: none;
            font-size: 0.78rem;
            font-weight: 600;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            opacity: 0.65;
            transition: all 0.4s ease;
            min-height: 48px;
        }

        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            border-image: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan)) 1;
            transform: scale(1.04);
        }

        .fab-left:active {
            transform: scale(0.95);
        }

        .fab-left-icon {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 0.95rem;
            flex-shrink: 0;
            animation: fabPulse 2.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 0 8px rgba(0, 240, 255, 0); }
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(15, 12, 32, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 3.5rem 0 1.5rem;
            position: relative;
            z-index: 1;
            margin-bottom: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin-top: 0.8rem;
            max-width: 280px;
        }

        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-silver);
            transition: all 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-trust {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin-bottom: 1.8rem;
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.9rem;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--text-silver);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: 20px;
        }

        .trust-badge i {
            color: var(--accent-lime);
            font-size: 0.75rem;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .footer-copy {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .footer-copy a {
            color: var(--text-muted);
        }

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

        .footer-payment {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .footer-payment span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.3rem 0.7rem;
            font-size: 0.68rem;
            font-weight: 600;
            color: var(--text-silver);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 6px;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .metrics-row { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .rewards-grid { grid-template-columns: repeat(2, 1fr); }
            .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero-profile { flex: 0 0 240px; }
        }

        @media (max-width: 768px) {
            .main-nav { display: none; }
            .nav-toggle { display: flex; }
            .header-inner { gap: 0.8rem; }
            .brand-name { font-size: 0.95rem; }
            .brand-sub { font-size: 0.58rem; }
            .btn-login { padding: 0.45rem 0.8rem; font-size: 0.78rem; }
            .btn-signup { padding: 0.5rem 1rem; font-size: 0.78rem; }

            .hero { padding: 6.5rem 0 3rem; min-height: auto; }
            .hero-content { flex-direction: column; gap: 2rem; }
            .hero-profile { flex: 1 1 100%; width: 100%; max-width: 340px; margin: 0 auto; }
            .hero-main { text-align: center; }
            .hero-desc { max-width: 100%; margin-left: auto; margin-right: auto; }
            .hero-cta-group { justify-content: center; }
            .hero-points { justify-content: center; }
            .section-title { text-align: left; }
            .section-desc { text-align: left; }

            .features-grid { grid-template-columns: 1fr; }
            .rewards-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .metrics-row { grid-template-columns: repeat(2, 1fr); gap: 0.8rem; }
            .metric-num { font-size: 1.5rem; }
            .news-layout { grid-template-columns: 1fr; }
            .news-sidebar { position: static; }
            .cta-layout { grid-template-columns: 1fr; gap: 2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .fab-left { left: 0.7rem; bottom: 5.5rem; padding: 0.45rem 0.8rem 0.45rem 0.55rem; font-size: 0.7rem; }
            .fab-left-icon { width: 30px; height: 30px; font-size: 0.8rem; }
            .floating-cta-text { font-size: 0.75rem; }
            .floating-cta-btn { padding: 0.5rem 1rem; font-size: 0.78rem; }
        }

        @media (max-width: 520px) {
            .metrics-row { grid-template-columns: 1fr 1fr; }
            .hero-avatar { width: 90px; height: 90px; }
            .hero-title { font-size: 1.7rem; }
            .hero-desc { font-size: 0.9rem; }
            .hero-stats { gap: 0.8rem; }
            .hero-stat-num { font-size: 1.1rem; }
            .btn-primary, .btn-secondary { padding: 0.75rem 1.3rem; font-size: 0.85rem; width: 100%; justify-content: center; }
            .hero-cta-group { flex-direction: column; width: 100%; }
            .hero-points { flex-direction: column; align-items: center; gap: 0.6rem; }
            .section-title { font-size: 1.4rem; }
            .section-desc { font-size: 0.88rem; }
            .cta-form { padding: 1.4rem; }
            .news-item { padding: 0.9rem 1rem; }
            .news-item-title { font-size: 0.85rem; }
            .btn-login { display: none; }
            .btn-signup { padding: 0.5rem 0.9rem; font-size: 0.72rem; }
            .brand-name { font-size: 0.85rem; }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 25, 45, 0.82);
            --bg-card-hover: rgba(20, 35, 60, 0.92);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6A7A8A;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.18);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 45px rgba(0, 240, 255, 0.22);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.06) 0%, transparent 45%), radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%), radial-gradient(ellipse at 50% 50%, rgba(15, 12, 32, 0.8) 0%, transparent 70%);
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(0, 240, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 240, 255, 0.018) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.45;
        }

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

        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: all 0.3s ease;
        }

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

        button, input, textarea, select {
            font-family: var(--font-primary);
            outline: none;
        }

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

        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            position: relative;
            z-index: 1;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.7rem 0;
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            padding: 0.5rem 0;
            border-bottom-color: rgba(0, 240, 255, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.2rem;
            flex-wrap: nowrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
            min-width: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            animation: brandPulse 3s ease-in-out infinite;
        }

        @keyframes brandPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 28px rgba(204, 255, 0, 0.55); }
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .brand-name span {
            color: var(--accent-cyan);
        }

        .brand-sub {
            font-size: 0.65rem;
            color: var(--text-silver);
            font-weight: 400;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 0.55rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            font-weight: 700;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-login:hover {
            border-color: var(--border-glow);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-signup {
            padding: 0.55rem 1.25rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
            box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
        }

        .btn-signup:hover {
            color: #000;
            transform: translateY(-1px);
            box-shadow: 0 8px 25px rgba(0, 240, 255, 0.5);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-glow);
            color: var(--text-white);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
        }

        /* ============ ARTICLE HERO ============ */
        .article-hero {
            padding: 8.5rem 0 3rem;
            position: relative;
            background: linear-gradient(180deg, rgba(0, 240, 255, 0.08) 0%, rgba(11, 26, 48, 0.6) 60%, var(--bg-primary) 100%);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            left: 0;
            height: 100%;
            background-image: radial-gradient(ellipse at 70% 20%, rgba(204, 255, 0, 0.06) 0%, transparent 50%);
            pointer-events: none;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 1.25rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .article-breadcrumb i {
            font-size: 0.6rem;
            color: var(--accent-cyan);
        }

        .article-breadcrumb a {
            color: var(--text-silver);
        }

        .article-breadcrumb a:hover {
            color: var(--accent-cyan);
        }

        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0 0 1rem;
            color: var(--text-white);
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-bottom: 1.5rem;
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }

        .article-meta i {
            color: var(--accent-cyan);
        }

        .article-excerpt {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 780px;
            border-left: 3px solid var(--accent-lime);
            padding-left: 1.25rem;
            font-weight: 300;
        }

        /* ============ ARTICLE MAIN ============ */
        .article-main {
            padding: 3.5rem 0 4rem;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 2.5rem;
            align-items: start;
        }

        .article-body {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .article-body::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 2rem 0 1rem;
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 1.75rem 0 0.75rem;
            line-height: 1.4;
        }

        .article-body p {
            color: var(--text-silver);
            margin-bottom: 1rem;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        .article-body ul, .article-body ol {
            margin: 0 0 1.5rem 1.5rem;
            color: var(--text-silver);
        }

        .article-body li {
            margin-bottom: 0.5rem;
            line-height: 1.65;
            font-size: 0.95rem;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent-cyan);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(0, 240, 255, 0.05);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-white);
            font-style: italic;
            font-size: 1.05rem;
        }

        .article-body a {
            color: var(--accent-cyan);
            border-bottom: 1px dashed rgba(0, 240, 255, 0.4);
            transition: all 0.3s ease;
        }

        .article-body a:hover {
            color: var(--accent-lime);
            border-bottom-color: var(--accent-lime);
        }

        .article-empty {
            text-align: center;
            padding: 3.5rem 1.5rem;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
        }

        .article-empty i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 1rem;
        }

        .article-empty h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .article-empty p {
            color: var(--text-silver);
            margin-bottom: 1.5rem;
        }

        /* ============ ARTICLE SIDEBAR ============ */
        .article-sidebar {
            position: sticky;
            top: 90px;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .sidebar-card h3 i {
            color: var(--accent-cyan);
        }

        .sidebar-card p {
            color: var(--text-silver);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }

        .sidebar-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.75rem;
            margin: 1rem 0;
        }

        .sidebar-stat {
            text-align: center;
            padding: 0.75rem 0.5rem;
            background: rgba(0, 240, 255, 0.05);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 240, 255, 0.1);
        }

        .sidebar-stat strong {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--accent-cyan);
            display: block;
        }

        .sidebar-stat span {
            font-size: 0.65rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

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

        .sidebar-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            padding: 0.65rem 0;
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        .sidebar-list li:last-child {
            border-bottom: none;
        }

        .sidebar-list i {
            color: var(--accent-lime);
            margin-top: 3px;
            font-size: 0.8rem;
        }

        /* ============ METRICS DASHBOARD ============ */
        .metrics-section {
            padding: 3rem 0 4rem;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

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

        .metric-card .metric-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 0.75rem;
            background: rgba(0, 240, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent-cyan);
        }

        .metric-card strong {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            display: block;
            letter-spacing: -0.02em;
        }

        .metric-card span {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* ============ DOWNLOAD STEPS ============ */
        .download-section {
            padding: 3.5rem 0 4rem;
            background: linear-gradient(180deg, transparent 0%, rgba(15, 12, 32, 0.6) 50%, transparent 100%);
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
            color: var(--text-white);
        }

        .section-subtitle {
            color: var(--text-silver);
            font-size: 1rem;
            max-width: 560px;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid rgba(204, 255, 0, 0.12);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            position: relative;
        }

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

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            color: #000;
            font-weight: 800;
            font-size: 1rem;
            border-radius: 50%;
            margin-bottom: 1rem;
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.65rem;
            color: var(--text-white);
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 3.5rem 0 4rem;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
        }

        .faq-list {
            max-width: 800px;
            margin: 2rem auto 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.15rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-white);
            gap: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 4rem 0 5rem;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(15, 12, 32, 0.8) 40%, rgba(204, 255, 0, 0.08) 100%);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
            box-shadow: var(--shadow-neon);
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 120%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(0, 240, 255, 0.08) 0%, transparent 55%);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            color: var(--text-white);
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            color: var(--text-silver);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto 2rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-primary {
            padding: 1rem 2.25rem;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 8px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.35);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            color: #000;
            transform: translateY(-2px);
            box-shadow: 0 10px 35px rgba(204, 255, 0, 0.45);
        }

        .btn-secondary {
            padding: 1rem 2.25rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid var(--border-glow);
            border-radius: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-secondary:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(15, 12, 32, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            padding: 3rem 0 1.5rem;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-brand-text {
            color: var(--text-silver);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-top: 1rem;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-silver);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .footer-links i {
            font-size: 0.75rem;
            color: var(--accent-cyan);
        }

        .footer-trust {
            display: flex;
            align-items: center;
            gap: 2rem;
            flex-wrap: wrap;
            padding: 1.5rem 0;
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-trust i {
            color: var(--accent-lime);
            margin-right: 0.35rem;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(0, 240, 255, 0.06);
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ============ FAB ============ */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid rgba(204, 255, 0, 0.4);
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            transition: all 0.35s ease;
            opacity: 0.65;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
            animation: fabFloat 4s ease-in-out infinite;
        }

        .fab-support::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 10px;
            height: 10px;
            background: var(--accent-pink);
            border-radius: 50%;
            animation: fabBlink 2s ease-in-out infinite;
        }

        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        @keyframes fabBlink {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 1; box-shadow: 0 0 8px var(--accent-pink); }
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
        }

        .fab-support.active {
            opacity: 1;
            transform: scale(0.95);
            border-color: var(--accent-pink);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .main-nav {
                gap: 0.1rem;
            }
            .main-nav a {
                padding: 0.5rem 0.7rem;
                font-size: 0.78rem;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 6.5rem 0 2.5rem;
            }
            .article-hero h1 {
                font-size: 1.8rem;
            }
            .article-body {
                padding: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .header-actions .btn-login {
                display: inline-block;
            }
            .header-actions .btn-signup {
                display: inline-block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 1rem 1.25rem;
                gap: 0.25rem;
                border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.75rem 1rem;
                font-size: 0.9rem;
                width: 100%;
            }
            .nav-toggle {
                display: flex;
            }
            .brand-name {
                font-size: 0.95rem;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.45rem;
            }
            .article-excerpt {
                font-size: 0.9rem;
                padding-left: 1rem;
            }
            .article-meta {
                gap: 0.75rem;
                font-size: 0.75rem;
                flex-wrap: wrap;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-panel {
                padding: 2rem 1.25rem;
            }
            .cta-panel h2 {
                font-size: 1.5rem;
            }
            .btn-primary, .btn-secondary {
                padding: 0.85rem 1.5rem;
                font-size: 0.9rem;
                width: 100%;
            }
            .header-actions .btn-login {
                display: none;
            }
            .fab-support {
                left: 0.75rem;
                bottom: 5rem;
                width: 46px;
                height: 46px;
                font-size: 1.1rem;
            }
        }

/* roulang page: category1 */
/* ============ ROULANG DESIGN SYSTEM — roulang page: category1 ============ */
        :root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 25, 45, 0.82);
            --bg-card-hover: rgba(20, 35, 60, 0.92);
            --bg-deep: #06101E;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --accent-orange: #FF6B35;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6A7A8A;
            --text-dark: #1A1A2E;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.4);
            --border-subtle: rgba(0, 240, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.18);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 45px rgba(0, 240, 255, 0.22);
            --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.55);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ============ BASE RESET ============ */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.06) 0%, transparent 45%),
                radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%),
                radial-gradient(ellipse at 50% 50%, rgba(15, 12, 32, 0.8) 0%, transparent 70%);
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: 
                linear-gradient(rgba(0, 240, 255, 0.018) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.018) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.45;
        }

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

        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: color var(--transition-base), opacity var(--transition-base), transform var(--transition-base);
        }

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

        button, input, textarea, select {
            font-family: var(--font-primary);
            outline: none;
            border: none;
        }

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

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

        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.25;
        }

        p {
            margin: 0 0 1rem;
        }

        /* ============ FOUNDATION OVERRIDES ============ */
        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            position: relative;
            z-index: 1;
        }

        .grid-x {
            margin-left: -0.75rem;
            margin-right: -0.75rem;
        }

        .grid-x > .cell {
            padding-left: 0.75rem;
            padding-right: 0.75rem;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.7rem 0;
            transition: all 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            padding: 0.5rem 0;
            border-bottom-color: rgba(0, 240, 255, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.2rem;
            flex-wrap: nowrap;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
            min-width: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            animation: brandPulse 3s ease-in-out infinite;
        }

        @keyframes brandPulse {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.35); }
            50% { box-shadow: 0 0 30px rgba(204, 255, 0, 0.5); }
        }

        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }

        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .brand-name span {
            color: var(--accent-cyan);
        }

        .brand-sub {
            font-size: 0.65rem;
            color: var(--text-silver);
            font-weight: 400;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }

        .main-nav a {
            padding: 0.55rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all var(--transition-base);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }

        .main-nav a.active {
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.08);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent-lime);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-lime);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        .btn-login {
            padding: 0.6rem 1.25rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-signup {
            padding: 0.6rem 1.4rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50px;
            transition: all var(--transition-base);
            white-space: nowrap;
            box-shadow: 0 4px 18px rgba(0, 240, 255, 0.25);
        }

        .btn-signup:hover {
            color: #000;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.4);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 10px;
            color: var(--text-white);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
        }

        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.2);
        }

        /* ============ PAGE HERO ============ */
        .category-hero {
            position: relative;
            padding: 9rem 0 4rem;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.9) 0%, rgba(11, 26, 48, 0.7) 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(204, 255, 0, 0.06) 100%);
            z-index: 0;
        }

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

        .hero-content {
            max-width: 700px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.45rem 1.2rem;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
        }

        .hero-badge i {
            font-size: 0.9rem;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 1.25rem;
            color: var(--text-white);
        }

        .hero-title span {
            color: var(--accent-lime);
            display: block;
            font-size: 0.7em;
            font-weight: 700;
            margin-top: 0.25rem;
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.65;
            margin-bottom: 2rem;
            max-width: 580px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
            padding: 0.9rem 2rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-lime), #a3e500);
            border-radius: 50px;
            box-shadow: 0 8px 30px rgba(204, 255, 0, 0.3);
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary:hover {
            color: #000;
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(204, 255, 0, 0.45);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.65rem;
            padding: 0.9rem 1.8rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            border-radius: 50px;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            transform: translateY(-3px);
        }

        /* ============ HERO SIDE / STATS ============ */
        .hero-side {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .hero-image-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-elevated);
            border: 1px solid rgba(0, 240, 255, 0.25);
            aspect-ratio: 16/10;
            background: var(--bg-card);
        }

        .hero-image-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-image-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.2) 0%, transparent 60%);
            pointer-events: none;
        }

        .floating-stat {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(11, 26, 48, 0.9);
            backdrop-filter: blur(12px);
            padding: 0.75rem 1.2rem;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-glow);
            box-shadow: var(--shadow-neon);
            display: flex;
            align-items: center;
            gap: 0.75rem;
            z-index: 3;
        }

        .floating-stat i {
            font-size: 1.8rem;
            color: var(--accent-lime);
        }

        .floating-stat div {
            line-height: 1.2;
        }

        .floating-stat strong {
            font-size: 1.1rem;
            display: block;
            color: var(--text-white);
        }

        .floating-stat small {
            font-size: 0.7rem;
            color: var(--text-silver);
        }

        /* ============ METRICS SECTION ============ */
        .metrics-section {
            padding: 4rem 0 2rem;
            position: relative;
            z-index: 1;
        }

        .metric-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.75rem 1.5rem;
            text-align: left;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        .metric-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .metric-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .metric-item:hover::before {
            opacity: 1;
        }

        .metric-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .metric-value {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 0.25rem;
        }

        .metric-value span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .metric-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }

        /* ============ FEATURES / MATRIX ============ */
        .features-section {
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

        .section-header {
            margin-bottom: 2.5rem;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .section-header p {
            color: var(--text-silver);
            font-size: 0.95rem;
            max-width: 500px;
            margin-bottom: 0;
        }

        .section-tag {
            display: inline-block;
            padding: 0.4rem 1.2rem;
            background: rgba(204, 255, 0, 0.08);
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-lime);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 0.75rem;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 1.5rem;
        }

        .feature-card {
            grid-column: span 4;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 2rem 1.75rem;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-lime);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lime);
        }

        .feature-card .feature-icon {
            width: 50px;
            height: 50px;
            background: rgba(204, 255, 0, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-lime);
            margin-bottom: 0.75rem;
        }

        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .feature-card .feature-link {
            margin-top: auto;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-cyan);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .feature-card .feature-link:hover {
            color: var(--accent-lime);
            gap: 0.7rem;
        }

        /* ============ COMPARISON / RESULT ============ */
        .comparison-section {
            padding: 4rem 0;
            background: rgba(15, 12, 32, 0.5);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            z-index: 1;
        }

        .comparison-box {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .comparison-header {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 1rem;
            padding: 1.25rem 2rem;
            background: rgba(0, 240, 255, 0.04);
            border-bottom: 1px solid var(--border-subtle);
        }

        .comparison-header span {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .comparison-header span.active {
            color: var(--accent-lime);
        }

        .comparison-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 1rem;
            padding: 1.1rem 2rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            align-items: center;
        }

        .comparison-row:last-child {
            border-bottom: none;
        }

        .comparison-row .feature-name {
            font-size: 0.9rem;
            color: var(--text-silver);
        }

        .comparison-row .value {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
        }

        .comparison-row .value.highlight {
            color: var(--accent-lime);
            font-weight: 700;
        }

        .comparison-row .value i {
            margin-right: 0.5rem;
        }

        /* ============ DOWNLOAD STEPS ============ */
        .steps-section {
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .step-card {
            background: transparent;
            position: relative;
            padding: 1.5rem 0;
            text-align: left;
        }

        .step-number {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            opacity: 0.8;
            margin-bottom: 0.5rem;
        }

        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        .step-card::after {
            content: '';
            position: absolute;
            top: 2rem;
            left: 3.5rem;
            right: -1rem;
            height: 1px;
            background: linear-gradient(90deg, var(--border-glow), transparent);
        }

        .step-card:last-child::after {
            display: none;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-question {
            padding: 1.25rem 1.75rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .faq-question h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 0;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
        }

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

        .faq-answer p {
            padding: 0 1.75rem 1.25rem;
            font-size: 0.9rem;
            color: var(--text-silver);
            margin: 0;
        }

        /* ============ CTA FORM ============ */
        .cta-section {
            padding: 4rem 0 6rem;
            position: relative;
            z-index: 1;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.05));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-xl);
            padding: 3rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-form {
            background: rgba(11, 26, 48, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 2rem;
            backdrop-filter: blur(12px);
            position: relative;
            z-index: 2;
        }

        .cta-form h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .cta-form p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-group label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            display: block;
            margin-bottom: 0.4rem;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-size: 0.9rem;
            transition: all var(--transition-base);
        }

        .form-group input::placeholder {
            color: var(--text-muted);
        }

        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.05);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
        }

        .form-group select option {
            background: var(--bg-primary);
            color: var(--text-white);
        }

        .btn-submit {
            width: 100%;
            padding: 0.9rem 2rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-lime), #a3e500);
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 6px 20px rgba(204, 255, 0, 0.25);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(204, 255, 0, 0.4);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-top: 1rem;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }

        .footer-links a i {
            font-size: 0.8rem;
            width: 16px;
            text-align: center;
        }

        .footer-trust {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .footer-trust span {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ============ FAB ============ */
        .fab-float {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11, 26, 48, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            text-decoration: none;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
            transition: all var(--transition-base);
            opacity: 0.7;
            animation: fabBreathe 3s ease-in-out infinite;
        }

        .fab-float:hover {
            opacity: 1;
            color: var(--accent-lime);
            border-color: var(--accent-lime);
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(204, 255, 0, 0.5);
        }

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

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 10px;
            height: 10px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--bg-primary);
            animation: notificationBlink 1.5s ease-in-out infinite;
        }

        @keyframes notificationBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .grid-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .main-nav {
                gap: 0.1rem;
            }

            .main-nav a {
                padding: 0.5rem 0.75rem;
                font-size: 0.78rem;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .feature-card {
                grid-column: span 6;
            }

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

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

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 26, 48, 0.98);
                backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--border-subtle);
                padding: 1rem;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a {
                width: 100%;
                padding: 0.75rem 1rem;
                font-size: 0.95rem;
            }

            .main-nav a.active::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-actions {
                gap: 0.5rem;
            }

            .btn-login {
                padding: 0.5rem 0.9rem;
                font-size: 0.75rem;
            }

            .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.75rem;
            }

            .category-hero {
                padding: 7rem 0 3rem;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

            .feature-card {
                grid-column: span 12;
            }

            .comparison-header,
            .comparison-row {
                grid-template-columns: 1fr;
                padding: 0.9rem 1.25rem;
            }

            .comparison-header span {
                font-size: 0.7rem;
            }

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

            .step-card::after {
                display: none;
            }

            .cta-panel {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-trust {
                flex-direction: column;
                text-align: center;
            }

            .fab-float {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                bottom: 5rem;
            }
        }

        @media (max-width: 520px) {
            .brand-name {
                font-size: 0.95rem;
            }

            .brand-sub {
                font-size: 0.55rem;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .btn-login,
            .btn-signup {
                padding: 0.45rem 0.7rem;
                font-size: 0.7rem;
            }

            .hero-title {
                font-size: 1.6rem;
            }

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

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

            .metric-value {
                font-size: 1.5rem;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .cta-form {
                padding: 1.25rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 25, 45, 0.82);
            --bg-card-hover: rgba(20, 35, 60, 0.92);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6A7A8A;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.18);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 45px rgba(0, 240, 255, 0.22);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.06) 0%, transparent 45%), radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%), radial-gradient(ellipse at 50% 50%, rgba(15, 12, 32, 0.8) 0%, transparent 70%);
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(0, 240, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 240, 255, 0.018) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.45;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-decoration: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-primary);
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            position: relative;
            z-index: 1;
        }
        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.7rem 0;
            transition: all 0.35s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            padding: 0.5rem 0;
            border-bottom-color: rgba(0, 240, 255, 0.22);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.2rem;
            flex-wrap: nowrap;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
            min-width: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            animation: brandPulse 3s ease-in-out infinite;
        }
        @keyframes brandPulse {
            0%, 100% {
                box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 28px rgba(204, 255, 0, 0.45);
            }
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }
        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .brand-name span {
            color: var(--accent-cyan);
        }
        .brand-sub {
            font-size: 0.65rem;
            color: var(--text-silver);
            font-weight: 400;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 0.55rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px var(--border-glow);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-white);
            border-radius: 8px;
            border: 1px solid rgba(0, 240, 255, 0.3);
            background: transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }
        .btn-signup {
            padding: 0.5rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 700;
            color: #000;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            color: #000;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 8px;
            color: var(--text-white);
            font-size: 1.2rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.2);
            border-color: var(--accent-cyan);
        }
        /* ============ HERO ============ */
        .hero {
            padding: calc(var(--space-xxl) + 2rem) 0 var(--space-xl);
            position: relative;
            background-image: radial-gradient(ellipse at 70% 20%, rgba(0, 240, 255, 0.07) 0%, transparent 50%), radial-gradient(ellipse at 20% 80%, rgba(204, 255, 0, 0.05) 0%, transparent 45%);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-xl);
            align-items: center;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1rem;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            margin-bottom: var(--space-sm);
        }
        .hero-tag i {
            font-size: 0.65rem;
        }
        .hero h1 {
            font-size: clamp(2rem, 4vw, 2.9rem);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 0 0 var(--space-sm);
            color: var(--text-white);
        }
        .hero h1 .highlight {
            color: var(--accent-cyan);
            background: linear-gradient(120deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 520px;
            line-height: 1.7;
            margin: 0 0 var(--space-md);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 1.7rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: #000;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.35);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 34px rgba(0, 240, 255, 0.55);
            transform: translateY(-2px);
            color: #000;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.85rem 1.7rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-cyan);
            border-radius: 12px;
            border: 1px solid var(--border-glow);
            background: rgba(0, 240, 255, 0.04);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.12);
            border-color: var(--accent-cyan);
            color: var(--accent-lime);
            box-shadow: var(--shadow-neon);
            transform: translateY(-2px);
        }
        /* ============ HERO VISUALS ============ */
        .hero-status {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: var(--space-md);
        }
        .status-item {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.4rem 0.9rem;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--text-silver);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: 50px;
            white-space: nowrap;
        }
        .status-item i {
            font-size: 0.6rem;
            color: var(--accent-lime);
        }
        .status-item.online i {
            color: var(--accent-lime);
            animation: blink 2s ease-in-out infinite;
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .hero-icon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.9rem;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .hero-icon-grid::before {
            content: '';
            position: absolute;
            inset: -1px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(0,240,255,0.25), transparent 40%, rgba(204,255,0,0.15));
            z-index: -1;
            opacity: 0.6;
        }
        .icon-tile {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 1rem 0.5rem;
            text-align: center;
            background: rgba(0, 240, 255, 0.03);
            border: 1px solid rgba(0, 240, 255, 0.10);
            border-radius: var(--radius-md);
            transition: all 0.35s ease;
            min-height: 96px;
        }
        .icon-tile:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: rgba(0, 240, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: 0 10px 25px rgba(0, 240, 255, 0.15);
        }
        .icon-tile i {
            font-size: 1.7rem;
            color: var(--accent-cyan);
            margin-bottom: 0.5rem;
        }
        .icon-tile span {
            font-size: 0.72rem;
            font-weight: 500;
            color: var(--text-silver);
            line-height: 1.3;
        }
        /* ============ STAT DASHBOARD ============ */
        .stats-dashboard {
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.9), rgba(11, 26, 48, 0.92));
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            margin-bottom: var(--space-xl);
        }
        .stats-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: var(--space-md);
        }
        .stats-header h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin: 0;
            color: var(--text-white);
            letter-spacing: -0.01em;
        }
        .stats-header .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.4rem 1rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.08);
            border: 1px solid rgba(204, 255, 0, 0.3);
            border-radius: 50px;
        }
        .stats-header .live-badge i {
            font-size: 0.55rem;
            animation: blink 1.8s infinite;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.1rem;
        }
        .stat-card {
            background: rgba(0, 240, 255, 0.03);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 1.3rem;
            transition: all 0.35s ease;
        }
        .stat-card:hover {
            background: rgba(0, 240, 255, 0.07);
            border-color: rgba(0, 240, 255, 0.3);
            box-shadow: 0 10px 25px rgba(0, 240, 255, 0.12);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 1.9rem;
            font-weight: 900;
            color: var(--accent-cyan);
            margin-bottom: 0.25rem;
            letter-spacing: -0.02em;
        }
        .stat-number .unit {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-silver);
            font-weight: 500;
        }
        /* ============ SERVICE MATRIX ============ */
        .section-block {
            padding: var(--space-xl) 0;
            position: relative;
        }
        .section-heading {
            margin-bottom: var(--space-lg);
        }
        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            margin: 0 0 0.6rem;
            color: var(--text-white);
        }
        .section-heading p {
            font-size: 0.98rem;
            color: var(--text-silver);
            max-width: 520px;
            margin: 0;
            line-height: 1.7;
        }
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.3rem;
        }
        .service-row {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.4rem;
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            transition: all 0.35s ease;
        }
        .service-row:hover {
            background: var(--bg-card-hover);
            border-color: rgba(0, 240, 255, 0.35);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
            transform: translateY(-3px);
        }
        .service-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 12px;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }
        .service-info h3 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
            color: var(--text-white);
        }
        .service-info p {
            font-size: 0.88rem;
            color: var(--text-silver);
            margin: 0;
            line-height: 1.65;
        }
        /* ============ COMPARISON ============ */
        .comparison-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.4rem;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.9), rgba(11, 26, 48, 0.92));
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
        }
        .compare-column {
            background: rgba(0, 240, 255, 0.03);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 1.5rem;
        }
        .compare-column.recommended {
            border-color: rgba(204, 255, 0, 0.4);
            background: rgba(204, 255, 0, 0.04);
        }
        .compare-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .compare-title i {
            color: var(--accent-cyan);
        }
        .compare-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            padding: 0.55rem 0;
            font-size: 0.88rem;
            color: var(--text-silver);
            border-bottom: 1px solid rgba(0, 240, 255, 0.06);
        }
        .compare-list li:last-child {
            border-bottom: none;
        }
        .compare-list li i {
            font-size: 0.7rem;
            margin-top: 0.3rem;
            color: var(--accent-lime);
        }
        .compare-list li i.fa-xmark {
            color: var(--text-muted);
        }
        /* ============ FAQ ============ */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            margin-bottom: 0.9rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.2rem 1.4rem;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: all 0.3s ease;
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-question i {
            font-size: 0.7rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 1.4rem 1.3rem;
            font-size: 0.88rem;
            color: var(--text-silver);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        /* ============ CTA FORM ============ */
        .cta-section {
            padding: var(--space-xl) 0;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.92), rgba(11, 26, 48, 0.94));
            border-radius: var(--radius-lg);
            margin-bottom: var(--space-xl);
            border: 1px solid rgba(0, 240, 255, 0.2);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(ellipse at 30% 20%, rgba(0, 240, 255, 0.08) 0%, transparent 50%), radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%);
            pointer-events: none;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-lg);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .cta-text h2 {
            font-size: clamp(1.5rem, 2.6vw, 1.95rem);
            font-weight: 800;
            margin: 0 0 0.8rem;
            letter-spacing: -0.01em;
        }
        .cta-text p {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin: 0;
        }
        .download-form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            align-items: center;
        }
        .download-form input {
            flex: 1 1 auto;
            min-width: 180px;
            padding: 0.9rem 1.2rem;
            font-size: 0.92rem;
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 12px;
            transition: all 0.3s ease;
        }
        .download-form input:focus {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
        }
        .form-note {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(11, 26, 48, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: var(--space-xl) 0 var(--space-lg);
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: var(--space-lg);
            margin-bottom: var(--space-xl);
        }
        .footer-brand-text {
            font-size: 0.85rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-top: 0.8rem;
            max-width: 280px;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }
        .footer-links a {
            font-size: 0.85rem;
            color: var(--text-silver);
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
            transform: translateX(3px);
        }
        .footer-links a i {
            font-size: 0.7rem;
            margin-right: 0.4rem;
            color: var(--accent-cyan);
        }
        .footer-trust {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
        }
        .trust-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.35rem 0.8rem;
            font-size: 0.72rem;
            color: var(--text-silver);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: 50px;
        }
        .trust-badge i {
            color: var(--accent-lime);
            font-size: 0.6rem;
        }
        .copyright {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        /* ============ FAB ============ */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime)) 1;
            border-radius: 50%;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            opacity: 0.6;
            transition: all 0.3s ease;
            animation: fabFloat 3s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            color: var(--accent-lime);
        }
        .fab:active {
            transform: scale(0.95);
        }
        .fab .fab-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: var(--accent-pink);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(255, 0, 127, 0.8);
            animation: blink 2s infinite;
        }
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .hero-icon-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.6rem;
                padding: var(--space-sm);
            }
            .icon-tile {
                min-height: 72px;
                padding: 0.7rem 0.3rem;
            }
            .icon-tile i {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }
            .stat-card {
                padding: 1rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .comparison-panel {
                grid-template-columns: 1fr;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(11, 26, 48, 0.98);
                border-bottom: 1px solid rgba(0, 240, 255, 0.15);
                padding: 1rem;
                flex-direction: column;
                align-items: stretch;
                gap: 0.4rem;
                box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.7rem 1rem;
                font-size: 0.9rem;
                text-align: left;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 0.45rem 0.85rem;
                font-size: 0.78rem;
            }
            .brand-name {
                font-size: 0.95rem;
            }
            .brand-sub {
                font-size: 0.55rem;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 1.05rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .hero-icon-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.45rem;
            }
            .icon-tile {
                min-height: 64px;
                padding: 0.5rem 0.2rem;
            }
            .icon-tile i {
                font-size: 1.1rem;
            }
            .icon-tile span {
                font-size: 0.6rem;
            }
            .hero-status {
                gap: 0.4rem;
            }
            .status-item {
                font-size: 0.68rem;
                padding: 0.3rem 0.7rem;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                bottom: 5rem;
                left: 0.75rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.75rem 1.3rem;
                font-size: 0.85rem;
            }
            .download-form input {
                min-width: 100%;
            }
        }
        @media (max-width: 380px) {
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 0.4rem 0.65rem;
                font-size: 0.7rem;
            }
            .brand-name {
                font-size: 0.85rem;
            }
            .brand-sub {
                font-size: 0.5rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: rgba(15, 25, 45, 0.82);
            --bg-card-hover: rgba(20, 35, 60, 0.92);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6A7A8A;
            --border-glow: rgba(0, 240, 255, 0.35);
            --border-lime: rgba(204, 255, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 20px rgba(204, 255, 0, 0.18);
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 45px rgba(0, 240, 255, 0.22);
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 1.5rem;
            --space-lg: 2.5rem;
            --space-xl: 4rem;
            --space-xxl: 6rem;
            --font-primary: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
            background-image: radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.06) 0%, transparent 45%), radial-gradient(ellipse at 80% 90%, rgba(204, 255, 0, 0.05) 0%, transparent 40%), radial-gradient(ellipse at 50% 50%, rgba(15, 12, 32, 0.8) 0%, transparent 70%);
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: linear-gradient(rgba(0, 240, 255, 0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 240, 255, 0.018) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
            opacity: 0.45;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--accent-lime);
            text-decoration: none;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-primary);
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            position: relative;
            z-index: 1;
        }
        /* ============ HEADER / NAV ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 26, 48, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.12);
            padding: 0.7rem 0;
            transition: all 0.35s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 26, 48, 0.96);
            box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
            padding: 0.5rem 0;
            border-bottom-color: rgba(0, 240, 255, 0.22);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.2rem;
            flex-wrap: nowrap;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            flex-shrink: 0;
            min-width: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1.25rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            animation: brandPulse 3s ease-in-out infinite;
        }
        .brand-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
            min-width: 0;
        }
        .brand-name {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }
        .brand-name span {
            color: var(--accent-cyan);
        }
        .brand-sub {
            font-size: 0.65rem;
            color: var(--text-silver);
            font-weight: 400;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            flex: 1;
            justify-content: center;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 0.55rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.08);
        }
        .main-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }
        .btn-login {
            padding: 0.5rem 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            background: transparent;
            border: 1px solid rgba(166, 172, 175, 0.3);
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .btn-login:hover {
            color: var(--text-white);
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .btn-signup {
            padding: 0.55rem 1.2rem;
            font-size: 0.8rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            border-radius: 8px;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.3s ease;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
            color: #000;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: rgba(0, 240, 255, 0.1);
        }
        @keyframes brandPulse {
            0%, 100% {
                box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            }
        }
        /* ============ MOBILE NAV ============ */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(11, 26, 48, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 1rem 1.25rem;
            flex-direction: column;
            gap: 0.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-silver);
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        /* ============ HERO ============ */
        .page-hero {
            padding: 9rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.5) 0%, var(--bg-primary) 100%);
            z-index: 1;
        }
        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .hero-breadcrumb a {
            color: var(--text-silver);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .hero-breadcrumb i {
            font-size: 0.6rem;
            color: var(--text-muted);
        }
        .hero-breadcrumb span {
            color: var(--accent-cyan);
            font-weight: 600;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            color: var(--text-white);
            margin-bottom: 1rem;
            max-width: 800px;
        }
        .page-hero h1 span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 650px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .hero-cta-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }
        .btn-primary-cta {
            padding: 0.85rem 1.8rem;
            font-size: 1rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-primary-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
            color: #000;
        }
        .btn-outline-cta {
            padding: 0.85rem 1.8rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.4);
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }
        .btn-outline-cta:hover {
            background: rgba(0, 240, 255, 0.08);
            border-color: var(--accent-cyan);
            color: var(--accent-lime);
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-silver);
            font-weight: 500;
        }
        .hero-meta-item i {
            color: var(--accent-lime);
            font-size: 1rem;
        }
        .hero-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            min-height: 320px;
        }
        .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .hero-image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 26, 48, 0.2) 0%, rgba(11, 26, 48, 0.85) 100%);
            z-index: 2;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 1.5rem;
        }
        .hero-image-overlay .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(0, 240, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.7rem;
            border-radius: 6px;
            width: fit-content;
            margin-bottom: 0.7rem;
        }
        .hero-image-overlay h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0;
            line-height: 1.3;
        }
        .hero-image-overlay p {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin: 0.4rem 0 0;
        }
        /* ============ STATS / METRICS BOARD ============ */
        .stats-board {
            padding: 3rem 0 2rem;
            position: relative;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.2rem;
            text-align: left;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 0 0 4px 4px;
            opacity: 0.7;
        }
        .stat-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-neon);
            border-color: var(--border-glow);
        }
        .stat-icon {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 0.8rem;
            display: inline-flex;
            width: 48px;
            height: 48px;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 255, 0.1);
            border-radius: 12px;
            border: 1px solid rgba(0, 240, 255, 0.25);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 0.3rem;
        }
        .stat-number span {
            color: var(--accent-cyan);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-silver);
            font-weight: 500;
            line-height: 1.4;
        }
        /* ============ SECTION TITLES ============ */
        .section-title-block {
            margin-bottom: 2rem;
            text-align: left;
        }
        .section-title-block .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 20px;
            padding: 0.3rem 0.9rem;
            margin-bottom: 0.8rem;
        }
        .section-title-block h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin: 0 0 0.5rem;
            line-height: 1.3;
        }
        .section-title-block p {
            font-size: 0.95rem;
            color: var(--text-silver);
            margin: 0;
            max-width: 550px;
            line-height: 1.6;
        }
        /* ============ SERVICE MATRIX ============ */
        .service-matrix {
            padding: 3.5rem 0 2.5rem;
            position: relative;
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            gap: 1.2rem;
            align-items: flex-start;
        }
        .service-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateY(-3px);
        }
        .service-card .service-icon {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            transition: all 0.35s ease;
        }
        .service-card:hover .service-icon {
            background: rgba(0, 240, 255, 0.2);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        .service-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0 0 0.6rem;
            line-height: 1.3;
        }
        .service-content p {
            font-size: 0.9rem;
            color: var(--text-silver);
            margin: 0 0 0.8rem;
            line-height: 1.6;
        }
        .service-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .service-list li {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .service-list li i {
            color: var(--accent-lime);
            font-size: 0.7rem;
        }
        /* ============ COMPARISON SECTION ============ */
        .comparison-section {
            padding: 3.5rem 0 2.5rem;
            position: relative;
            background: rgba(0, 240, 255, 0.03);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: stretch;
        }
        .compare-card {
            border-radius: var(--radius-lg);
            padding: 2rem;
            position: relative;
            overflow: hidden;
        }
        .compare-card.unsafe {
            background: rgba(255, 0, 127, 0.08);
            border: 1px solid rgba(255, 0, 127, 0.25);
        }
        .compare-card.safe {
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }
        .compare-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            margin-bottom: 1rem;
            letter-spacing: 0.04em;
        }
        .compare-badge.danger {
            background: rgba(255, 0, 127, 0.2);
            color: #FF79C6;
            border: 1px solid rgba(255, 0, 127, 0.4);
        }
        .compare-badge.success {
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            border: 1px solid rgba(204, 255, 0, 0.4);
        }
        .compare-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin: 0 0 1.2rem;
            line-height: 1.3;
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .compare-list li {
            font-size: 0.9rem;
            color: var(--text-silver);
            display: flex;
            align-items: flex-start;
            gap: 0.7rem;
            line-height: 1.5;
        }
        .compare-list li i {
            flex-shrink: 0;
            margin-top: 0.2rem;
        }
        .compare-card.unsafe .compare-list li i {
            color: #FF79C6;
        }
        .compare-card.safe .compare-list li i {
            color: var(--accent-lime);
        }
        /* ============ FAQ ============ */
        .faq-section {
            padding: 3.5rem 0 3rem;
            position: relative;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.35s ease;
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item.open {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.3rem;
            background: transparent;
            border: none;
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: all 0.3s ease;
        }
        .faq-question i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer p {
            padding: 0 1.3rem 1.2rem;
            margin: 0;
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
        }
        /* ============ CTA / CONTACT FORM ============ */
        .cta-section {
            padding: 3.5rem 0 4rem;
            position: relative;
        }
        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(204, 255, 0, 0.06) 50%, rgba(11, 26, 48, 0.9) 100%);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-info h2 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin: 0 0 0.8rem;
            line-height: 1.3;
        }
        .cta-info p {
            font-size: 1rem;
            color: var(--text-silver);
            margin: 0 0 1.2rem;
            line-height: 1.6;
            max-width: 450px;
        }
        .cta-benefits {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .cta-benefits li {
            font-size: 0.8rem;
            color: var(--text-silver);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 20px;
            padding: 0.4rem 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .cta-benefits li i {
            color: var(--accent-lime);
            font-size: 0.7rem;
        }
        .cta-form-wrap {
            background: rgba(11, 26, 48, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            backdrop-filter: blur(12px);
        }
        .cta-form-wrap h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0 0 1.2rem;
            text-align: left;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            margin-bottom: 0.4rem;
            text-align: left;
        }
        .form-group input,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            font-size: 0.9rem;
            color: var(--text-white);
            background: rgba(0, 0, 0, 0.4);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .form-group input:focus,
        .form-group select:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
            outline: none;
        }
        .form-group input::placeholder {
            color: var(--text-muted);
        }
        .btn-submit {
            width: 100%;
            padding: 0.8rem 1.5rem;
            font-size: 0.95rem;
            font-weight: 700;
            color: #000;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border: none;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.35s ease;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.5);
            color: #000;
        }
        .form-note {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 0.8rem;
        }
        /* ============ FOOTER ============ */
        .site-footer {
            background: rgba(15, 12, 32, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 3rem 0 1.5rem;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand-text {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-top: 0.7rem;
            max-width: 300px;
        }
        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.9rem;
            letter-spacing: 0.02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-links a i {
            font-size: 0.7rem;
            width: 16px;
        }
        .footer-trust {
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-trust-badges {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.7rem;
            color: var(--text-muted);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: 20px;
            padding: 0.3rem 0.8rem;
        }
        .trust-badge i {
            color: var(--accent-lime);
            font-size: 0.65rem;
        }
        .footer-copyright {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-align: right;
        }
        /* ============ FAB ============ */
        .fab-support {
            position: fixed;
            left: 1rem;
            bottom: 5rem;
            z-index: 90;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            background: rgba(11, 26, 48, 0.8);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan)) 1;
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.25);
            transition: all 0.35s ease;
            opacity: 0.6;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-support i {
            font-size: 1.2rem;
            color: var(--accent-cyan);
            transition: all 0.35s ease;
        }
        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
        }
        .fab-support:active {
            transform: scale(0.95);
        }
        .fab-support::after {
            content: '';
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: var(--accent-pink);
            border-radius: 50%;
            animation: blinkDot 1.8s ease-in-out infinite;
        }
        @keyframes fabFloat {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-6px);
            }
        }
        @keyframes blinkDot {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.2;
            }
        }
        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .main-nav a {
                padding: 0.5rem 0.7rem;
                font-size: 0.78rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                display: none;
            }
            .page-hero {
                padding: 7rem 0 3rem;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-cta-row {
                gap: 0.8rem;
            }
            .btn-primary-cta,
            .btn-outline-cta {
                padding: 0.7rem 1.2rem;
                font-size: 0.85rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-card {
                padding: 1.2rem 1rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .section-title-block h2 {
                font-size: 1.4rem;
            }
            .service-card {
                padding: 1.3rem;
                flex-direction: column;
                gap: 1rem;
            }
            .compare-card {
                padding: 1.3rem;
            }
            .cta-panel {
                padding: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .grid-container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-meta {
                gap: 0.8rem;
            }
            .hero-meta-item {
                font-size: 0.75rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-trust {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-copyright {
                text-align: left;
            }
            .fab-support {
                left: 0.8rem;
                bottom: 4rem;
                width: 44px;
                height: 44px;
            }
            .fab-support i {
                font-size: 1rem;
            }
            .faq-question {
                font-size: 0.85rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer p {
                font-size: 0.85rem;
                padding: 0 1rem 1rem;
            }
            .cta-form-wrap {
                padding: 1.2rem;
            }
            .compare-card h3 {
                font-size: 1.1rem;
            }
            .brand-name {
                font-size: 0.9rem;
            }
            .brand-sub {
                font-size: 0.55rem;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
        }