:root{font:15px system-ui;color:#e6f2f2;background:#0b1620}body{margin:0;background:radial-gradient(ellipse at 20% 0%,#234450,#0b1620 70%);min-height:100vh}header{padding:15px 3%;background:#1a3445bd;backdrop-filter:blur(20px);position:sticky;top:0}nav{display:flex;gap:15px;flex-wrap:wrap}a{color:#a2e9de}main{max-width:1250px;margin:auto;padding:24px}p,li{line-height:1.65;color:#b9d1d3}.glass{padding:20px;border:1px solid #7fd5ce44;border-radius:18px;background:#173243a8;backdrop-filter:blur(20px);margin:15px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}label{display:block;margin:10px 0 5px}input,textarea,select,button{width:100%;padding:10px;background:#102333;color:#fff;border:1px solid #678a92;border-radius:9px;font:inherit}button{background:#167b78;cursor:pointer}output{display:block;white-space:pre-wrap;margin:12px 0;color:#a9e5dc}.row{display:flex;gap:10px;flex-wrap:wrap}.row>*{flex:1;min-width:140px}table{width:100%;border-collapse:collapse}th,td{border-bottom:1px solid #476875;padding:8px;text-align:left}@media(prefers-reduced-motion:no-preference){.glass{animation:appear .35s ease-out}@keyframes appear{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:none}}}