*{box-sizing:border-box}.title-emoji{font-size:3.5rem}body{margin:0;font-family:Inter,Segoe UI,sans-serif;background:radial-gradient(circle at top,#e0e7ff,#f8fafc);color:#0f172a}.container{max-width:1350px;margin:auto;padding:45px 28px}h1{font-family:"Segoe UI Emoji","Apple Color Emoji",sans-serif}h1{font-size:2.8rem;font-weight:900;color:#1e3a8a;margin-bottom:10px}input{width:100%;padding:18px 20px;margin:30px 0 40px;font-size:1.05rem;border-radius:16px;border:none;outline:none;background:#ffffffd9;box-shadow:0 12px 30px #0000001f}.quote-box{background:linear-gradient(135deg,#2563eb,#1e40af);color:#fff;padding:20px 26px;border-radius:18px;font-style:italic;font-size:1.05rem;margin:18px 0 35px;box-shadow:0 18px 40px #2563eb66}.domain-title{margin-top:55px;margin-bottom:22px;font-size:1.8rem;font-weight:800;color:#0f172a;display:flex;align-items:center;gap:12px;letter-spacing:.5px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:28px}.card{background:#ffffffbf;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:22px;padding:26px;box-shadow:0 25px 55px #0000001f;transition:all .3s ease;border:1px solid rgba(255,255,255,.45)}.card:hover{transform:translateY(-10px) scale(1.03);box-shadow:0 40px 80px #0000002e}.card h3{margin:0 0 10px;font-size:1.3rem;font-weight:700;color:#1e40af}.card p{margin:0;font-size:.95rem;color:#475569;font-weight:600}@media(max-width:480px){h1{font-size:2.1rem}.domain-title{font-size:1.5rem}}.emoji{font-size:1.2rem;margin-right:8px;vertical-align:middle}.level-badge{display:inline-block;margin-top:12px;padding:6px 14px;font-size:.8rem;font-weight:700;color:#fff;border-radius:999px}