/* Same tokens as the note pages, which keep their own inline copy so each
   note stays standalone. */
:root {
  --bg:#ffffff; --surface:#f5f5f3; --ink:#1d1d1f; --muted:#6e6e73; --rule:#e5e5e2;
  --accent:#2457c5; --signal:#b8431f;
  --f-body:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --f-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#141414; --surface:#1e1e1e; --ink:#e8e8e6; --muted:#9a9a97; --rule:#2c2c2c;
          --accent:#8ab4f8; --signal:#f28b6b; }
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);
     font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:720px;margin:0 auto;padding:0 20px 120px}
a{color:inherit}

.mast{padding:64px 0 8px;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 24px}
h1{font-size:2rem;font-weight:700;letter-spacing:-.02em;margin:0;line-height:1.2;flex:1 1 auto}
.mast nav a{color:var(--muted);text-decoration:none;font-size:15px}
.mast nav a:hover{color:var(--ink)}

.track{margin-top:48px}
.track > h2{font-size:.9rem;font-weight:600;color:var(--muted);margin:0 0 4px}
.topic{margin:0 0 28px}
.topic h3{font-size:1.1rem;font-weight:600;margin:12px 0 4px}
.sections{list-style:none;margin:0;padding:0}
.sections li{display:grid;grid-template-columns:36px 1fr;gap:8px;align-items:baseline;
  padding:10px 0;border-bottom:1px solid var(--rule)}
.sec-n{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.sec-name a{text-decoration:none}
.sec-name a:hover,.sec-name a:focus-visible{color:var(--accent)}
.empty{color:var(--muted)}