:root{color-scheme:light dark;--bg:#fafafa;--fg:#18181b;--muted:#71717a;--card:#fff;--line:#e4e4e7;--accent:#2563eb;--warn:#b45309}
@media (prefers-color-scheme:dark){:root{--bg:#09090b;--fg:#fafafa;--muted:#a1a1aa;--card:#18181b;--line:#27272a;--accent:#60a5fa;--warn:#fbbf24}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}
main{max-width:720px;margin:0 auto;padding:24px 16px}h1{font-size:22px;margin:0 0 16px}h2{font-size:16px;margin:24px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin:12px 0}
input[type=radio]{width:auto;margin-right:6px}
label{display:block;margin:10px 0 4px;font-size:13px;color:var(--muted)}input{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);font:inherit}
button{margin-top:14px;padding:8px 14px;border:0;border-radius:6px;background:var(--accent);color:#fff;font:inherit;cursor:pointer}button.ghost{background:transparent;color:var(--fg);border:1px solid var(--line)}
.muted{color:var(--muted);font-size:13px}.warn{color:var(--warn)}.err{color:#dc2626}code{font-family:ui-monospace,monospace;font-size:13px;word-break:break-all}
table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:4px 6px;border-bottom:1px solid var(--line)}header{display:flex;justify-content:space-between;align-items:center;gap:8px}