:root { --primary: #4361ee; --secondary: #3f37c9; --accent: #4cc9f0; --bg-color: #0f172a; --card-bg: #1e293b; --text-main: #f8fafc; --text-muted: #94a3b8; }
        * { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif; }
        body { background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { padding: 20px 0; position: fixed; width: 100%; top: 0; z-index: 1000; background: rgba(15, 23, 42, 0.92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,0.05); }
        nav { display: flex; justify-content: space-between; align-items: center; }
        .logo { font-size: 24px; font-weight: 700; color: var(--text-main); text-decoration: none; display: flex; align-items: center; gap: 10px; }
        .logo span { color: var(--accent); }
        .hero { padding: 160px 0 100px; text-align: center; background: radial-gradient(circle at top, rgba(67, 97, 238, 0.15), transparent 70%); }
        .hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; margin-bottom: 20px; background: linear-gradient(90deg, #fff, var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; }
        .cta-group { display: flex; justify-content: center; gap: 20px; margin-bottom: 60px; flex-wrap: wrap; }
        .btn { padding: 15px 35px; border-radius: 50px; font-size: 1.1rem; font-weight: 600; text-decoration: none; transition: all 0.3s ease; display: inline-flex; align-items: center; gap: 10px; cursor: pointer; border: none; }
        .btn-primary { background: linear-gradient(90deg, var(--primary), var(--secondary)); color: white; box-shadow: 0 10px 30px rgba(67, 97, 238, 0.3); }
        .btn-primary:hover, .btn-primary:focus { transform: translateY(-3px); box-shadow: 0 15px 40px rgba(67, 97, 238, 0.4); outline: none; }
        .btn-outline { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
        .btn-outline:hover, .btn-outline:focus { background: var(--accent); color: var(--bg-color); }
        .stats { display: flex; justify-content: center; gap: 50px; text-align: center; flex-wrap: wrap; margin-top: 40px; }
        .stat-item h3 { font-size: 2.5rem; color: var(--accent); margin-bottom: 5px; }
        .stat-item p { color: var(--text-muted); font-size: 1rem; }
        .features, .steps { padding: 100px 0; }
        .section-title { text-align: center; margin-bottom: 60px; }
        .section-title h2 { font-size: 2.5rem; margin-bottom: 15px; }
        .section-title p { color: var(--text-muted); max-width: 500px; margin: 0 auto; }
        .feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .feature-card { background: var(--card-bg); padding: 40px 30px; border-radius: 20px; text-align: center; border: 1px solid rgba(255,255,255,0.05); transition: transform 0.3s ease, box-shadow 0.3s ease; }
        .feature-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
        .feature-icon { width: 80px; height: 80px; margin: 0 auto 25px; background: linear-gradient(135deg, var(--primary), transparent 70%); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 36px; }
        .feature-card h3 { font-size: 1.5rem; margin-bottom: 15px; }
        .feature-card p { color: var(--text-muted); }
        .steps { background: rgba(0,0,0,0.2); }
        .step-container { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
        .step-card { flex: 1; min-width: 250px; max-width: 350px; text-align: center; position: relative; padding: 0 15px; }
        .step-number { position: absolute; top: 0; left: 50%; transform: translateX(-50%); font-size: 120px; font-weight: 900; color: rgba(255,255,255,0.03); z-index: -1; line-height: 1; }
        .step-card h3 { font-size: 1.5rem; margin-bottom: 15px; position: relative; z-index: 1; }
        .step-card p { color: var(--text-muted); position: relative; z-index: 1; }
        footer { padding: 60px 0 30px; text-align: center; border-top: 1px solid rgba(255,255,255,0.05); margin-top: 40px; }
        .footer-links { margin-bottom: 30px; display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
        .footer-links a { color: var(--text-muted); text-decoration: none; transition: color 0.3s; }
        .footer-links a:hover { color: var(--accent); }
        .copyright { color: var(--text-muted); font-size: 0.9rem; }
        .modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); display: none; justify-content: center; align-items: center; z-index: 2000; backdrop-filter: blur(5px); }
        .modal-content { background: var(--card-bg); padding: 40px; border-radius: 20px; text-align: center; max-width: 400px; width: 90%; position: relative; animation: popIn 0.3s ease-out; }
        @keyframes popIn { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }
        .close-modal { position: absolute; top: 15px; right: 20px; font-size: 28px; cursor: pointer; color: var(--text-muted); line-height: 1; }
        .close-modal:hover { color: var(--accent); }
        .qr-code { width: 200px; height: 200px; margin: 20px auto; background: white; padding: 10px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: bold; color: #333; overflow: hidden; }
        .qr-code img { width: 100%; height: auto; display: block; }
        .modal-content h3 { margin-bottom: 10px; }
        @media (max-width: 768px) {
            .hero { padding: 120px 0 60px; }
            .stats { gap: 30px; }
            .cta-group { flex-direction: column; align-items: center; }
            .btn { width: 100%; max-width: 300px; justify-content: center; }
        }