body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at center,#111827,#0b0f17 60%);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;color:#e6e6e6;text-align:center}.card{max-width:760px;padding:42px;border:1px solid rgba(255,255,255,.08);border-radius:22px;background:rgba(255,255,255,.04);box-shadow:0 0 40px rgba(0,255,170,.06),0 10px 60px rgba(0,0,0,.6);backdrop-filter:blur(6px);animation:fadeIn .6s ease-out}@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}h1{margin:0 0 18px;font-size:36px;letter-spacing:.5px}p{margin:0 0 16px;line-height:1.7;color:#b9c0cc;font-size:16px}code{color:#00ffaa;font-size:15px;text-shadow:0 0 8px rgba(0,255,170,.4);animation:pulse 2s infinite}@keyframes pulse{0%{opacity:.7}50%{opacity:1}100%{opacity:.7}}.btn{display:inline-block;margin-top:20px;padding:10px 18px;border-radius:14px;background:#1f2a44;color:#e6e6e6;text-decoration:none;transition:.25s}.btn:hover{background:#2f3e70;transform:translateY(-2px)}.small{opacity:.6;font-size:12px;margin-top:26px}.highlight{color:#ffcc66}