:root{--bg:#fafaf7;--fg:#1f1f1c;--muted:#6b6b66;--line:#e6e4dd;--accent:#1f1f1c;--ok:#2e7d4f;--warn:#b58a1a;--danger:#b3261e;--radius:8px;--space:12px;--font:ui-sans-serif,system-ui,-apple-system,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:15px;line-height:1.5}a{color:inherit}.app-shell{max-width:720px;margin:0 auto;padding:24px 16px 64px}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 0 20px;border-bottom:1px solid var(--line);margin-bottom:24px}.app-header h1{font-size:18px;font-weight:600;margin:0;letter-spacing:.02em}.app-header .badge{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:2px 8px;border-radius:999px}.section{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}.section h2{font-size:14px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.section h2,.section p{margin:0 0 8px}.muted{color:var(--muted)}.mono{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:13px}.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.btn,button{font:inherit;background:var(--accent);color:#fff;border:0;padding:8px 14px;border-radius:var(--radius);cursor:pointer}.btn.secondary,button.secondary{background:#fff;color:var(--accent);border:1px solid var(--line)}input[type=email],input[type=password],input[type=text],textarea{font:inherit;width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}button:disabled{opacity:.55;cursor:not-allowed}textarea{resize:vertical}:focus-visible{outline:2px solid var(--ok);outline-offset:3px}ul.plain{list-style:none;padding:0;margin:0}ul.plain li{padding:4px 0;border-bottom:1px solid var(--line)}ul.plain li:last-child{border-bottom:0}