/* roulang page: index */
:root {
            --bg-deep: #060B14;
            --bg-card: rgba(255, 255, 255, 0.03);
            --border-card: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.18);
            --neon-cyan: #1FDFD8;
            --neon-cyan-dim: rgba(31, 223, 216, 0.35);
            --electric-purple: #A161F7;
            --purple-glow: rgba(161, 97, 247, 0.5);
            --energy-orange: #FF6624;
            --orange-glow: rgba(255, 102, 36, 0.55);
            --text-primary: #FFFFFF;
            --text-secondary: rgba(255, 255, 255, 0.72);
            --text-muted: rgba(255, 255, 255, 0.45);
            --radius-card: 16px;
            --radius-btn: 999px;
            --radius-input: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow-cyan: 0 0 18px rgba(31, 223, 216, 0.6);
            --shadow-glow-cyan-lg: 0 0 30px rgba(31, 223, 216, 0.8);
            --shadow-glow-purple: 0 0 20px rgba(161, 97, 247, 0.45);
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --font-mono: 'Orbitron', 'DIN Alternate', 'SF Mono', monospace;
            --nav-height: 72px;
            --container-max: 1200px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-deep);
            background-image:
                radial-gradient(ellipse at 50% 20%, rgba(14, 26, 43, 0.85) 0%, rgba(6, 11, 20, 1) 65%),
                radial-gradient(ellipse at 22% 60%, rgba(161, 97, 247, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 78% 40%, rgba(31, 223, 216, 0.05) 0%, transparent 55%);
            background-attachment: fixed;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 48px 48px;
            mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 70%);
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            z-index: 1000;
            background: rgba(6, 11, 20, 0.7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(6, 11, 20, 0.88);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(255, 255, 255, 0.12);
        }

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

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--neon-cyan), #00A2FF);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #060B14;
            font-weight: 900;
            box-shadow: var(--shadow-glow-cyan);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--neon-cyan);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--neon-cyan);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--neon-cyan);
            outline: none;
        }

        .nav-links a:hover::after,
        .nav-links a:focus-visible::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            font-size: 13px;
            font-weight: 700;
            color: #060B14 !important;
            background: linear-gradient(135deg, var(--neon-cyan), #00A2FF);
            border-radius: var(--radius-btn);
            letter-spacing: 0.4px;
            box-shadow: var(--shadow-glow-cyan);
            transition: all var(--transition-bounce);
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            box-shadow: var(--shadow-glow-cyan-lg);
            transform: translateY(-2px);
            color: #060B14 !important;
        }

        .nav-cta-btn::after {
            display: none !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            padding: 4px;
            background: none;
            border: none;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            padding-top: var(--nav-height);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            filter: brightness(0.55) saturate(1.1);
        }

        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 35%, rgba(6, 11, 20, 0.3) 0%, rgba(6, 11, 20, 0.85) 70%, #060B14 100%);
        }

        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 1;
            pointer-events: none;
            overflow: hidden;
        }

        .particle {
            position: absolute;
            width: 3px;
            height: 3px;
            background: var(--neon-cyan);
            border-radius: 50%;
            animation: floatUp 6s linear infinite;
            opacity: 0;
            box-shadow: 0 0 6px var(--neon-cyan), 0 0 14px var(--neon-cyan-dim);
        }

        .particle:nth-child(1) {
            left: 10%;
            animation-delay: 0s;
            animation-duration: 5.5s;
        }
        .particle:nth-child(2) {
            left: 25%;
            animation-delay: 1.2s;
            animation-duration: 6.2s;
            background: var(--electric-purple);
            box-shadow: 0 0 6px var(--electric-purple), 0 0 14px var(--purple-glow);
        }
        .particle:nth-child(3) {
            left: 40%;
            animation-delay: 2.5s;
            animation-duration: 5s;
        }
        .particle:nth-child(4) {
            left: 55%;
            animation-delay: 0.7s;
            animation-duration: 7s;
            background: var(--energy-orange);
            box-shadow: 0 0 6px var(--energy-orange), 0 0 14px var(--orange-glow);
        }
        .particle:nth-child(5) {
            left: 68%;
            animation-delay: 3.1s;
            animation-duration: 5.7s;
        }
        .particle:nth-child(6) {
            left: 78%;
            animation-delay: 1.8s;
            animation-duration: 6.5s;
            background: var(--electric-purple);
            box-shadow: 0 0 6px var(--electric-purple), 0 0 14px var(--purple-glow);
        }
        .particle:nth-child(7) {
            left: 88%;
            animation-delay: 4s;
            animation-duration: 5.3s;
        }
        .particle:nth-child(8) {
            left: 15%;
            animation-delay: 2s;
            animation-duration: 6.8s;
            background: var(--energy-orange);
            box-shadow: 0 0 6px var(--energy-orange), 0 0 12px var(--orange-glow);
        }

        @keyframes floatUp {
            0% {
                bottom: -40px;
                opacity: 0;
                transform: translateX(0) scale(0.6);
            }
            15% {
                opacity: 0.9;
            }
            55% {
                opacity: 0.7;
                transform: translateX(30px) scale(1.3);
            }
            85% {
                opacity: 0.2;
                transform: translateX(-20px) scale(0.8);
            }
            100% {
                bottom: 105%;
                opacity: 0;
                transform: translateX(10px) scale(0.4);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            padding: 40px 20px;
        }

        .hero-badge {
            display: inline-block;
            padding: 7px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--neon-cyan);
            border: 1px solid rgba(31, 223, 216, 0.35);
            border-radius: var(--radius-btn);
            letter-spacing: 1px;
            margin-bottom: 24px;
            background: rgba(31, 223, 216, 0.06);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .hero-title {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #FFFFFF 0%, #E8F9FF 25%, var(--neon-cyan) 60%, #00C8E8 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: none;
            filter: drop-shadow(0 0 18px rgba(31, 223, 216, 0.3));
        }

        .hero-subtitle {
            font-size: 19px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.6;
            letter-spacing: 0.3px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 32px;
            font-size: 16px;
            font-weight: 700;
            color: #060B14;
            background: linear-gradient(135deg, var(--neon-cyan), #00A2FF);
            border-radius: var(--radius-btn);
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-glow-cyan);
            transition: all var(--transition-bounce);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.25) 0%, transparent 60%);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow-cyan-lg);
            transform: translateY(-3px) scale(1.03);
            color: #060B14;
        }
        .btn-primary:hover::before {
            opacity: 1;
        }
        .btn-primary:active {
            transform: scale(0.96);
            transition: transform 0.1s ease;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 32px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-btn);
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-bounce);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--neon-cyan);
            color: var(--neon-cyan);
            box-shadow: 0 0 20px rgba(31, 223, 216, 0.25);
            transform: translateY(-2px);
            background: rgba(31, 223, 216, 0.05);
        }
        .btn-secondary:active {
            transform: scale(0.96);
            transition: transform 0.1s ease;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 90px 0;
            position: relative;
            z-index: 1;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--neon-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== ADVANTAGES - Z LAYOUT ========== */
        .advantages-list {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .adv-item {
            display: flex;
            align-items: center;
            gap: 48px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .adv-item::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(31, 223, 216, 0.03) 0%, transparent 50%, rgba(161, 97, 247, 0.03) 100%);
            pointer-events: none;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .adv-item:hover {
            border-color: var(--border-hover);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(31, 223, 216, 0.12) inset;
            transform: translateY(-2px);
        }
        .adv-item:hover::after {
            opacity: 1;
        }

        .adv-item.reverse {
            flex-direction: row-reverse;
        }

        .adv-visual {
            flex: 0 0 42%;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 10;
            background: rgba(6, 11, 20, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .adv-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .adv-item:hover .adv-visual img {
            transform: scale(1.04);
        }

        .adv-visual .scan-line {
            position: absolute;
            top: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
            animation: scanDown 4s ease-in-out infinite;
            pointer-events: none;
            z-index: 2;
        }

        @keyframes scanDown {
            0%,
            100% {
                top: -2px;
                opacity: 0;
            }
            25% {
                opacity: 0.9;
            }
            50% {
                top: 100%;
                opacity: 0.9;
            }
            75% {
                opacity: 0;
            }
        }

        .adv-info {
            flex: 1;
            min-width: 0;
        }

        .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            background: rgba(31, 223, 216, 0.1);
            color: var(--neon-cyan);
            border: 1px solid rgba(31, 223, 216, 0.25);
            flex-shrink: 0;
            transition: all var(--transition-smooth);
        }

        .adv-item:hover .adv-icon {
            box-shadow: 0 0 20px rgba(31, 223, 216, 0.35);
            border-color: var(--neon-cyan);
            background: rgba(31, 223, 216, 0.16);
        }

        .adv-info h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            letter-spacing: 0.2px;
        }

        .adv-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 420px;
        }

        /* ========== STATS ========== */
        .stats-section {
            position: relative;
            background: rgba(6, 11, 20, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .stats-section .stats-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.15;
            pointer-events: none;
        }

        .stats-section .stats-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: blur(2px) brightness(0.6);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            z-index: 1;
        }

        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .stat-card:hover {
            border-color: var(--border-hover);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 48px;
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 6px;
            background: linear-gradient(180deg, var(--neon-cyan) 0%, #00A2FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 12px rgba(31, 223, 216, 0.4));
            line-height: 1.1;
        }

        .stat-card:nth-child(2) .stat-number {
            background: linear-gradient(180deg, var(--electric-purple) 0%, #C084FC 100%);
            -webkit-background-clip: text;
            background-clip: text;
            filter: drop-shadow(0 0 12px rgba(161, 97, 247, 0.5));
        }
        .stat-card:nth-child(3) .stat-number {
            background: linear-gradient(180deg, var(--energy-orange) 0%, #FF9A6C 100%);
            -webkit-background-clip: text;
            background-clip: text;
            filter: drop-shadow(0 0 12px rgba(255, 102, 36, 0.5));
        }
        .stat-card:nth-child(4) .stat-number {
            background: linear-gradient(180deg, #FFFFFF 0%, #B0D0FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
            font-weight: 500;
        }

        .stat-glow {
            position: absolute;
            bottom: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            border-radius: 4px;
            background: var(--neon-cyan);
            box-shadow: 0 0 16px var(--neon-cyan-dim);
            opacity: 0.5;
            transition: all var(--transition-smooth);
        }

        .stat-card:nth-child(2) .stat-glow {
            background: var(--electric-purple);
            box-shadow: 0 0 16px var(--purple-glow);
        }
        .stat-card:nth-child(3) .stat-glow {
            background: var(--energy-orange);
            box-shadow: 0 0 16px var(--orange-glow);
        }
        .stat-card:nth-child(4) .stat-glow {
            background: #FFFFFF;
            box-shadow: 0 0 16px rgba(255, 255, 255, 0.4);
        }

        .stat-card:hover .stat-glow {
            opacity: 1;
            width: 100px;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-slider {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-behavior: smooth;
            padding: 10px 4px 24px;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            cursor: grab;
        }

        .testimonials-slider::-webkit-scrollbar {
            display: none;
        }
        .testimonials-slider:active {
            cursor: grabbing;
        }

        .testimonial-card {
            flex: 0 0 300px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            user-select: none;
        }

        .testimonial-card:hover {
            border-color: var(--electric-purple);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(161, 97, 247, 0.15) inset;
            transform: translateY(-4px);
        }

        .testimonial-card .user-row {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .testimonial-card .user-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            overflow: hidden;
            flex-shrink: 0;
            border: 2px solid rgba(161, 97, 247, 0.4);
            box-shadow: 0 0 14px rgba(161, 97, 247, 0.25);
            transition: all var(--transition-smooth);
        }

        .testimonial-card:hover .user-avatar {
            border-color: var(--electric-purple);
            box-shadow: 0 0 22px rgba(161, 97, 247, 0.5);
        }

        .testimonial-card .user-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-card .user-name {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-primary);
            margin-bottom: 2px;
        }

        .testimonial-card .user-tag {
            font-size: 12px;
            color: var(--text-muted);
        }

        .testimonial-card .stars {
            color: #FFB84D;
            font-size: 13px;
            letter-spacing: 2px;
            margin-bottom: 10px;
        }

        .testimonial-card .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-style: italic;
        }

        .testimonial-card .verified-badge {
            display: inline-block;
            font-size: 11px;
            color: var(--neon-cyan);
            margin-top: 10px;
            letter-spacing: 0.5px;
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item.active {
            border-color: rgba(31, 223, 216, 0.4);
            box-shadow: 0 0 20px rgba(31, 223, 216, 0.08);
            background: rgba(255, 255, 255, 0.05);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.3px;
            user-select: none;
            gap: 16px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--neon-cyan);
            border: 1px solid rgba(31, 223, 216, 0.3);
            transition: all var(--transition-smooth);
            font-weight: 700;
        }

        .faq-item.active .faq-icon {
            background: rgba(31, 223, 216, 0.15);
            border-color: var(--neon-cyan);
            transform: rotate(45deg);
            box-shadow: 0 0 12px rgba(31, 223, 216, 0.3);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            text-align: center;
            padding: 100px 0;
            background: rgba(6, 11, 20, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(31, 223, 216, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-inner .btn-primary {
            font-size: 18px;
            padding: 18px 40px;
            letter-spacing: 0.6px;
        }

        .cta-promise {
            display: inline-block;
            margin-top: 18px;
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.4px;
        }

        .cta-promise i {
            color: var(--neon-cyan);
            margin: 0 4px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: rgba(4, 8, 16, 0.9);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 48px 0 32px;
            text-align: center;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .footer-logo span {
            color: var(--neon-cyan);
        }

        .footer-slogan {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            list-style: none;
            margin-bottom: 24px;
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--neon-cyan);
        }

        .footer-copy {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 42px;
            }
            .section-title {
                font-size: 30px;
            }
            .adv-item {
                gap: 28px;
                padding: 28px 24px;
            }
            .adv-visual {
                flex: 0 0 38%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stat-number {
                font-size: 40px;
            }
            .testimonial-card {
                flex: 0 0 260px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }

            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                background: rgba(6, 11, 20, 0.92);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                padding: 100px 32px 40px;
                gap: 20px;
                border-left: 1px solid rgba(255, 255, 255, 0.06);
                transition: right var(--transition-smooth);
                z-index: 1000;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                font-size: 15px;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta-btn {
                margin-top: 8px;
            }

            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                max-width: 300px;
                justify-content: center;
                font-size: 15px;
                padding: 14px 24px;
            }

            .section {
                padding: 60px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-header {
                margin-bottom: 36px;
            }

            .adv-item,
            .adv-item.reverse {
                flex-direction: column;
                gap: 20px;
                padding: 24px 20px;
            }
            .adv-visual {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 9;
            }
            .adv-info h3 {
                font-size: 19px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-card {
                padding: 24px 14px;
            }
            .stat-number {
                font-size: 34px;
            }
            .stat-label {
                font-size: 12px;
            }

            .testimonial-card {
                flex: 0 0 250px;
                padding: 20px 18px;
            }

            .faq-question {
                font-size: 15px;
                padding: 15px 18px;
            }
            .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }

            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-inner .btn-primary {
                font-size: 16px;
                padding: 16px 32px;
            }

            .footer-links {
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 27px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-badge {
                font-size: 11px;
                padding: 5px 14px;
            }
            .section-title {
                font-size: 23px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 36px;
            }
            .testimonial-card {
                flex: 0 0 220px;
            }
            .cta-inner h2 {
                font-size: 22px;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 14px;
                padding: 13px 20px;
            }
            .nav-links {
                width: 260px;
            }
        }

        /* ========== FOCUS VISIBLE ========== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        /* ========== OVERLAY when mobile menu open ========== */
        .menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            transition: opacity var(--transition-smooth);
        }
        .menu-overlay.active {
            display: block;
        }

        @media (min-width: 769px) {
            .menu-overlay.active {
                display: none;
            }
        }