:root {
            --primary-color: #00f2ff;
            --secondary-color: #7000ff;
            --bg-dark: #050b16;
            --card-bg: #0d1626;
            --text-main: #ffffff;
            --text-muted: #a0aec0;
            --accent: #f0f0f0;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif; background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* Header */
        header { padding: 20px 0; background: rgba(5, 11, 22, 0.9); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #1a273e; }
        .nav-container { display: flex; justify-content: space-between; align-items: center; }
        .logo-area { display: flex; align-items: center; gap: 10px; }
        .ai-page-logo { height: 40px; }
        nav .nav-links { display: flex; gap: 0; list-style: none; }
        nav .nav-links a { color: var(--text-main); text-decoration: none; padding: 10px 15px; font-size: 14px; transition: 0.3s; }
        nav .nav-links a:hover { color: var(--primary-color); }

        /* Hero */
        #hero { padding: 100px 0; text-align: center; background: radial-gradient(circle at center, #1a273e 0%, #050b16 70%); }
        .hero-title { font-size: 3.5rem; margin-bottom: 20px; background: linear-gradient(to right, #fff, var(--primary-color)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .hero-sub { font-size: 1.2rem; color: var(--text-muted); max-width: 700px; margin: 0 auto 30px; }
        .hero-btns { display: flex; justify-content: center; gap: 20px; }
        .btn { padding: 12px 30px; border-radius: 50px; text-decoration: none; font-weight: bold; transition: 0.3s; }
        .btn-primary { background: var(--primary-color); color: #000; }
        .btn-outline { border: 1px solid var(--primary-color); color: var(--primary-color); }

        /* Sections */
        section { padding: 80px 0; }
        h2 { text-align: center; font-size: 2.5rem; margin-bottom: 50px; }
        
        .grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .card { background: var(--card-bg); padding: 30px; border-radius: 15px; border: 1px solid #1a273e; transition: 0.3s; }
        .card:hover { border-color: var(--primary-color); transform: translateY(-5px); }
        
        /* Table */
        .table-container { overflow-x: auto; background: var(--card-bg); padding: 20px; border-radius: 15px; }
        table { width: 100%; border-collapse: collapse; min-width: 600px; }
        th, td { padding: 15px; text-align: left; border-bottom: 1px solid #1a273e; }

        /* FAQ */
        .faq-item { margin-bottom: 15px; background: var(--card-bg); border-radius: 8px; overflow: hidden; }
        .faq-q { padding: 20px; cursor: pointer; display: flex; justify-content: space-between; font-weight: bold; }
        .faq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: 0.3s; color: var(--text-muted); }
        .faq-item.active .faq-a { padding: 20px; max-height: 500px; }

        /* Form */
        form { background: var(--card-bg); padding: 40px; border-radius: 15px; max-width: 600px; margin: 0 auto; }
        input, select, textarea { width: 100%; padding: 12px; margin: 10px 0; background: #050b16; border: 1px solid #1a273e; color: white; border-radius: 5px; }
        button { width: 100%; padding: 15px; background: var(--primary-color); color: #000; border: none; border-radius: 5px; cursor: pointer; font-weight: bold; }

        /* Footer */
        footer { padding: 50px 0; background: #000; text-align: center; color: var(--text-muted); }
        .footer-links { margin-bottom: 20px; }
        .footer-links a { color: var(--text-muted); margin: 0 10px; text-decoration: none; }

        @media (max-width: 768px) {
            .hero-title { font-size: 2rem; }
            .nav-links { display: none; }
        }