:root{--paper:#fbfaf7;--surface:#ffffff;--ink:#1d2320;--muted:#66736d;--line:#d8ded9;--forest:#1f6f4a;--forest-soft:#dff1e7;--sky:#dceafe;--sun:#f5d47b;--rose:#f1d7d7;--shadow:0 18px 40px rgba(29,35,32,0.08)}*{box-sizing:border-box}body,html{min-height:100%;background:var(--paper)}body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;letter-spacing:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh}.topbar{position:-webkit-sticky;position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;gap:16px;min-height:64px;padding:0 32px;border-bottom:1px solid var(--line);background:rgba(251,250,247,.94);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand,.topbar{align-items:center}.brand{display:inline-flex;gap:10px;font-size:18px;font-weight:760}.brand-mark{display:grid;width:28px;height:28px;place-items:center;border:1px solid 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