:root{--maroon: #7a0019;--maroon-d: #5c0013;--bg: #f6f6f7;--card: #ffffff;--ink: #1c1c1e;--muted: #6b7280;--line: #e5e7eb;--ok: #15803d;--warn: #b45309;--red: #b91c1c;--blue: #1d4ed8}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{font-family:-apple-system,system-ui,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}.app{max-width:720px;margin:0 auto;padding-bottom:96px}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:var(--maroon);color:#fff}.brand{font-weight:700;letter-spacing:.2px}.topbar nav{display:flex;gap:4px}.topbar nav button{background:transparent;color:#fff;border:0;padding:6px 10px;border-radius:8px;font-size:14px;cursor:pointer;opacity:.8}.topbar nav button.on{background:#ffffff2e;opacity:1;font-weight:600}main{padding:16px}.muted{color:var(--muted)}.empty{text-align:center;padding:40px 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