:root {
            --primary-purple: #7c3aed;
            --purple-light: #a78bfa;
            --purple-dark: #5b21b6;
            --purple-gradient: linear-gradient(135deg, #7c3aed 0%, #a78bfa 50%, #c084fc 100%);
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #1e293b;
            --text-gray: #64748b;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
            --shadow-md: 0 10px 25px rgba(0,0,0,0.1);
            --shadow-hover: 0 20px 40px rgba(124,58,237,0.2);
            --radius: 12px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        header {
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }

        .logo img {
            height: 40px;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        nav a {
            color: var(--text-dark);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
        }

        nav a:hover {
            color: var(--primary-purple);
            background: rgba(124,58,237,0.1);
        }

        .cta-button {
            background: var(--purple-gradient);
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-md);
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            background: var(--purple-gradient);
            color: white;
            text-align: center;
            padding: 8rem 0 6rem;
            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(255,255,255,0.1) 0%, transparent 50%),
                        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            opacity: 0;
            animation: fadeInUp 1s 0.2s forwards;
        }

        .hero p {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            opacity: 0;
            animation: fadeInUp 1s 0.4s forwards;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            opacity: 0;
            animation: fadeInUp 1s 0.6s forwards;
        }

        /* Stats */
        .stats {
            background: var(--bg-card);
            padding: 4rem 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 3rem;
            font-weight: 800;
            background: var(--purple-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }

        /* Sections */
        section {
            padding: 6rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: var(--text-dark);
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .card {
            background: var(--bg-card);
            padding: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: all 0.4s ease;
            border: 1px solid var(--border-light);
        }

        .card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-purple);
        }

        .card h3 {
            color: var(--primary-purple);
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        /* Process Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .step {
            text-align: center;
            padding: 2rem;
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: var(--purple-gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 1.5rem;
        }

        /* Comparison Table */
        .comparison {
            background: var(--bg-card);
            padding: 4rem 0;
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 2rem;
            min-width: 800px;
        }

        th, td {
            padding: 1.5rem;
            text-align: left;
            border-bottom: 1px solid var(--border-light);
        }

        th {
            background: var(--purple-gradient);
            color: white;
            font-weight: 600;
        }

        .score-badge {
            background: var(--purple-gradient);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-weight: 600;
        }

        /* Reviews */
        .review {
            background: linear-gradient(135deg, var(--purple-light), var(--purple-gradient));
            color: white;
            padding: 2rem;
            border-radius: var(--radius);
            position: relative;
            overflow: hidden;
        }

        .review::before {
            content: '"';
            position: absolute;
            top: -10px;
            left: 20px;
            font-size: 4rem;
            color: rgba(255,255,255,0.3);
            font-family: serif;
        }

        .stars {
            color: #fbbf24;
            margin-bottom: 1rem;
        }

        /* Form */
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .form-group {
            margin-bottom: 2rem;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--text-dark);
        }

        input, select, textarea {
            width: 100%;
            padding: 1rem;
            border: 2px solid var(--border-light);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: var(--primary-purple);
        }

        textarea {
            height: 120px;
            resize: vertical;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .faq-question {
            background: var(--bg-card);
            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(124,58,237,0.05);
        }

        .faq-answer {
            padding: 0 1.5rem 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
        }

        .faq-answer.active {
            max-height: 200px;
            padding: 1.5rem;
        }

        /* Footer */
        footer {
            background: var(--text-dark);
            color: white;
            padding: 4rem 0 2rem;
        }

        .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(--purple-light);
        }

        .footer-section a {
            color: #cbd5e1;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--purple-light);
        }

        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
        }

        /* Floating Elements */
        .floating-cta {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: var(--purple-gradient);
            color: white;
            padding: 1rem 1.5rem;
            border-radius: 50px;
            box-shadow: var(--shadow-md);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .floating-cta:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .kefu-qr {
            position: fixed;
            bottom: 6rem;
            right: 2rem;
            width: 100px;
            height: 100px;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all 0.3s ease;
            z-index: 999;
        }

        .kefu-qr.active {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .kefu-qr img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }

        /* Animations */
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }

            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 1rem;
                box-shadow: var(--shadow-md);
            }

            nav ul.active {
                display: flex;
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

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

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

            .floating-cta, .kefu-qr {
                right: 1rem;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--purple-light);
            border-radius: 4px;
        }