:root {
            --primary-glow: linear-gradient(135deg, #00d4ff 0%, #7b00ff 50%, #ff0080 100%);
            --primary: #00d4ff;
            --secondary: #7b00ff;
            --accent: #ff0080;
            --bg-main: #0a0a1e;
            --bg-card: rgba(255,255,255,0.05);
            --bg-glass: rgba(255,255,255,0.1);
            --text-primary: #ffffff;
            --text-secondary: #b8b8ff;
            --border-glow: rgba(0,212,255,0.3);
            --shadow-glow: 0 20px 40px rgba(0,212,255,0.15);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', sans-serif;
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(10,10,30,0.95);
            backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-glow);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.5rem;
            font-weight: 700;
            background: var(--primary-glow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .ai-page-logo {
            width: 40px;
            height: 40px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }
        
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--primary);
            text-shadow: 0 0 10px var(--primary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-glow);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .cta-btn {
            background: var(--primary-glow);
            color: #000;
            padding: 12px 24px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,212,255,0.3);
        }
        
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 40px rgba(0,212,255,0.4);
        }
        
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        
        .hamburger span {
            width: 25px;
            height: 3px;
            background: var(--primary);
            transition: 0.3s;
        }
        
        /* Hero */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            text-align: center;
            background: radial-gradient(ellipse at center, rgba(0,212,255,0.1) 0%, transparent 70%);
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 80%, rgba(127,0,255,0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255,0,128,0.2) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(0,212,255,0.15) 0%, transparent 50%);
            animation: heroGlow 20s ease-in-out infinite alternate;
        }
        
        @keyframes heroGlow {
            0%, 100% { opacity: 0.5; transform: scale(1); }
            50% { opacity: 0.8; transform: scale(1.1); }
        }
        
        .hero-content h1 {
            font-size: clamp(2.5rem, 5vw, 4.5rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: var(--primary-glow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            position: relative;
            z-index: 2;
        }
        
        .hero-content .subtitle {
            font-size: 1.3rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        /* Sections */
        section {
            padding: 100px 0;
        }
        
        .section-title {
            text-align: center;
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 4rem;
            background: var(--primary-glow);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        /* Cards */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 4rem;
        }
        
        .card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            border: 1px solid var(--border-glow);
            border-radius: 24px;
            padding: 2.5rem;
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }
        
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary-glow);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }
        
        .card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-glow);
            border-color: var(--primary);
        }
        
        .card:hover::before {
            transform: scaleX(1);
        }
        
        .card-icon {
            width: 80px;
            height: 80px;
            background: var(--primary-glow);
            border-radius: 20px;
            margin: 0 auto 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
        }
        
        .card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        
        /* Steps */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        
        .step {
            text-align: center;
            position: relative;
        }
        
        .step-number {
            width: 60px;
            height: 60px;
            background: var(--primary-glow);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 1.5rem;
            color: #000;
        }
        
        /* Comparison Table */
        .comparison-table {
            overflow-x: auto;
            background: var(--bg-glass);
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid var(--border-glow);
        }
        
        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 800px;
        }
        
        th, td {
            padding: 1.5rem;
            text-align: left;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        
        th {
            background: var(--bg-card);
            font-weight: 600;
        }
        
        .score-badge {
            background: var(--primary-glow);
            color: #000;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
        }
        
        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            margin-bottom: 1rem;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-glow);
        }
        
        .faq-question {
            padding: 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        
        .faq-question:hover {
            background: rgba(0,212,255,0.1);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            background: rgba(255,255,255,0.02);
        }
        
        .faq-answer.active {
            max-height: 200px;
            padding: 0 1.5rem 1.5rem;
        }
        
        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .review-card {
            background: var(--bg-card);
            border-radius: 20px;
            padding: 2rem;
            border: 1px solid var(--border-glow);
        }
        
        .stars {
            color: #ffd700;
            margin-bottom: 1rem;
        }
        
        /* Form */
        .form-container {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            padding: 3rem;
            border-radius: 24px;
            border: 1px solid var(--border-glow);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        
        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            background: rgba(255,255,255,0.1);
            border: 1px solid var(--border-glow);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 1rem;
        }
        
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-secondary);
        }
        
        /* Footer */
        footer {
            background: rgba(0,0,0,0.5);
            border-top: 1px solid var(--border-glow);
            padding: 3rem 0 1.5rem;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-section h3 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        .footer-section a {
            color: var(--text-secondary);
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: var(--text-secondary);
        }
        
        /* Floating Elements */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background: var(--primary-glow);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-glow);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        
        .floating-kefu:hover {
            transform: scale(1.1);
        }
        
        .kefu-modal {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            padding: 2rem;
            border-radius: 20px;
            border: 1px solid var(--border-glow);
            z-index: 1001;
            max-width: 400px;
            display: none;
        }
        
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            z-index: 1000;
            display: none;
        }
        
        .close-modal {
            position: absolute;
            top: 1rem;
            right: 1rem;
            cursor: pointer;
            font-size: 1.5rem;
        }
        
        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(50px);
            transition: all 0.8s ease;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            
            .nav-links {
                position: fixed;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(10,10,30,0.98);
                flex-direction: column;
                padding: 2rem;
                gap: 1rem;
                transform: translateY(-100%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s ease;
            }
            
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .cards-grid,
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            
            section {
                padding: 60px 0;
            }
        }
        
        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        
        ::-webkit-scrollbar-track {
            background: rgba(255,255,255,0.05);
        }
        
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
        }