:root{--ink:#18181b;--ink-soft:#71717a;--ink-muted:#a1a1aa;--paper:#fafaf9;--card:#fff;--line:#e4e4e7;--line-strong:#d4d4d8;--teal:#0f6e56;--teal-deep:#0b5a46;--teal-tint:#e1f5ee;--amber:#a9762b;--red:#dc2626;--radius:10px;--radius-sm:6px;--shadow-sm:0 1px 2px rgba(24,24,27,.04);--shadow-md:0 1px 3px rgba(24,24,27,.06),0 4px 12px rgba(24,24,27,.05)}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,system-ui,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--teal-deep)}.shell{min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;border-bottom:1px solid var(--line);background:var(--card)}.topbar .brand{font-weight:500;font-size:14px;color:var(--ink)}.topbar .brand a{color:inherit;text-decoration:none}