:root{--bg: #0f172a;--card: #1e293b;--fg: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--ok: #22c55e;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,sans-serif}main{max-width:520px;margin:0 auto;padding:1rem 1rem 4rem}h1{font-size:1.4rem}h2{font-size:1.05rem;color:var(--muted);margin:1.5rem 0 .5rem}.card{background:var(--card);border-radius:12px;padding:1rem;margin:.5rem 0}label{display:block;font-size:.85rem;color:var(--muted);margin:.5rem 0 .2rem}input,select,button{font:inherit;width:100%;padding:.6rem;border-radius:8px;border:1px solid #334155;background:#0b1220;color:var(--fg)}button{background:var(--accent);color:#04222e;border:none;font-weight:600;margin-top:.75rem;cursor:pointer}button.secondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}.row{display:flex;gap:.5rem}.row>*{flex:1}.check{display:flex;align-items:center;gap:.5rem}.check input{width:auto}.toast{position:fixed;bottom:1rem;left:50%;transform:translate(-50%);background:var(--ok);color:#042;padding:.5rem 1rem;border-radius:999px}.muted{color:var(--muted);font-size:.85rem}