:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f8fb;--fg:#0f172a;--card:#fff;--muted:#475569;--border:#dbe2ea;--danger:#b91c1c;--success:#166534}*{box-sizing:border-box}body{background:radial-gradient(circle at top right,#e6f0ff 0%,var(--bg)45%);color:var(--fg);margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:920px;margin:0 auto;padding:40px 20px 80px}section{background:var(--card);border:1px solid var(--border);border-radius:12px;margin:14px 0;padding:16px}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}ul{margin:8px 0 0 18px}.small{color:var(--muted);font-size:14px}.stack{gap:12px;display:grid}label{gap:6px;font-size:14px;display:grid}input{border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:14px}button{border:1px solid var(--fg);background:var(--fg);color:#fff;cursor:pointer;border-radius:8px;padding:10px 12px;font-weight:600}button:hover{opacity:.92}.error{color:var(--danger);font-size:14px}.notice{color:var(--success);font-size:14px}