:root{color:#f4efe6;background:radial-gradient(circle at top,rgba(160,196,255,.18),transparent 30%),linear-gradient(180deg,#14213d,#101726 55%,#0b1019);font-family:IBM Plex Sans,Segoe UI,sans-serif;line-height:1.5;font-weight:400}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,select{font:inherit}.layout{width:min(1120px,calc(100vw - 2rem));margin:0 auto;padding:3rem 0 4rem}.hero{max-width:720px;margin-bottom:2rem}.eyebrow{margin:0 0 .6rem;color:#fca311;letter-spacing:.18em;text-transform:uppercase;font-size:.78rem}.hero h1{margin:0;font-size:clamp(2.4rem,7vw,4.8rem);line-height:.94}.lede,.muted,.error{max-width:65ch;color:#f4efe6d1}.panel{background:#090e19b8;border:1px solid rgba(252,163,17,.18);border-radius:24px;padding:1.4rem;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 24px 60px #00000042}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.form-grid label{display:grid;gap:.4rem}.form-grid span{font-size:.95rem;color:#f4efe6e0}.form-grid input,.form-grid select,.submit{border:1px solid rgba(255,255,255,.14);border-radius:14px;background:#ffffff0f;color:inherit;padding:.85rem 1rem}.toggle{grid-template-columns:auto 1fr;align-items:center;gap:.75rem}.toggle input{width:1.1rem;height:1.1rem;padding:0}.submit{cursor:pointer;background:linear-gradient(135deg,#fca311,#ff6b35);color:#0b1019;border:0;font-weight:700}.submit:disabled{opacity:.7;cursor:wait}.result-panel{margin-top:1.25rem}.result-value{font-size:clamp(2.2rem,8vw,4.6rem);font-weight:700;line-height:1}.error{color:#ff9b85}@media(max-width:640px){.layout{width:min(100vw - 1rem,1120px);padding-top:1.5rem}.panel{padding:1rem}}