:root { --primary-color: #2563eb; --accent-color: #7c3aed; --text-dark: #1e293b; --bg-light: #f8fafc; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Segoe UI', system-ui, sans-serif; line-height: 1.6; color: var(--text-dark); background: #ffffff; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        header { padding: 20px 0; background: #fff; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 1000; }
        .nav-container { display: flex; justify-content: space-between; align-items: center; }
        .nav-links { display: flex; gap: 0; align-items: center; }
        .nav-links a { padding: 0 15px; text-decoration: none; color: #475569; font-weight: 500; }
        .hero { padding: 80px 0; text-align: center; background: linear-gradient(135deg, #f0f7ff 0%, #f5f3ff 100%); }
        h1 { font-size: 2.5rem; margin-bottom: 20px; color: var(--text-dark); }
        .btn { display: inline-block; padding: 12px 30px; background: var(--primary-color); color: #fff; border-radius: 8px; text-decoration: none; transition: 0.3s; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin: 40px 0; }
        .card { padding: 30px; border: 1px solid #e2e8f0; border-radius: 12px; background: #fff; transition: 0.3s; }
        .card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
        footer { padding: 40px 0; background: #0f172a; color: #cbd5e1; text-align: center; }
        .faq-item { margin-bottom: 15px; border-bottom: 1px solid #334155; padding-bottom: 10px; }
        .faq-q { font-weight: bold; cursor: pointer; display: flex; justify-content: space-between; }
        .faq-a { display: none; padding-top: 10px; color: #94a3b8; }
        .ai-page-logo { width: 150px; }
        .hidden { display: none; }