*{box-sizing:border-box}:root{--bg:#0b1220;--card:#0f172a;--text:#e2e8f0;--muted:#94a3b8;--accent:#0ea5e9;--border:#1f2937}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Noto Sans,Arial;display:flex;flex-direction:column;min-height:100vh}
.app-bar{background:linear-gradient(90deg,var(--accent),#22d3ee);padding:16px;color:#05131a;display:flex;align-items:center;gap:12px;justify-content:space-between}
.button{cursor:pointer;border:1px solid #2b3b4b;background:#0b2a3a;color:var(--text);padding:8px 12px;border-radius:10px}
.content{padding:16px;max-width:880px;margin:0 auto;width:100%;display:grid;gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:0 10px 24px rgba(0,0,0,.25)}
label{display:block;margin-top:10px;font-weight:600}
.input-wrap{display:flex;align-items:stretch;gap:8px;margin-top:6px}
.input-wrap .prefix,.input-wrap .suffix{background:#0b1b2b;border:1px solid var(--border);padding:10px 12px;border-radius:12px}
.input-wrap input{flex:1;padding:10px 12px;border:1px solid var(--border);background:#0b1b2b;color:var(--text);border-radius:12px}
.actions{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:1fr;gap:16px}@media(min-width:640px){.grid{grid-template-columns:1fr 1fr}}
.big{font-size:clamp(1.25rem,4vw,2rem);font-variant-numeric:tabular-nums;display:block}
.meta{color:var(--muted);margin-top:4px}
.footer{margin-top:auto;padding:12px 16px;color:var(--muted);text-align:center;border-top:1px solid var(--border)}