@import "https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&family=Sora:wght@500;600;700&display=swap";:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#12140f;--bg-elev:#1b1e17;--bg-soft:#23281e;--ink:#f3efe3;--muted:#b4ae9c;--line:#35392d;--amber:#f0b429;--amber-ink:#1c1503;--ok:#7dce8a;--bad:#ff8b7a;--focus:#f0b429;--shadow:0 18px 40px #00000059;--radius:18px;color:var(--ink);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:IBM Plex Sans,"Source Sans 3",system-ui,sans-serif;font-weight:400;line-height:1.5}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4f0e6;--bg-elev:#fffdf7;--bg-soft:#ebe6d8;--ink:#1b1c16;--muted:#5e5a4e;--line:#d4cebc;--amber:#c48412;--amber-ink:#fff8e8;--ok:#1f7a3a;--bad:#b42318;--focus:#8a5a00;--shadow:0 14px 32px 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16px;font-weight:600;text-decoration:none;display:inline-flex}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--amber);color:var(--amber-ink)}.btn.primary:hover:not(:disabled){filter:brightness(1.05)}.btn.ghost{color:var(--ink);border-color:var(--line);background:0 0}.btn.ghost:hover:not(:disabled){background:var(--bg-soft)}.btn.amber{background:var(--bg-soft);color:var(--ink);border-color:color-mix(in srgb, var(--amber) 45%, var(--line))}.panel{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.panel-head{margin-bottom:12px}.muted{color:var(--muted)}.rings{grid-template-columns:repeat(3,1fr);justify-items:center;gap:8px;margin-bottom:12px;display:grid}.ring-wrap{flex-direction:column;align-items:center;gap:6px;display:flex}.ring-track{stroke:var(--line)}.ring-value{stroke:var(--amber);transition:stroke-dashoffset .4s}.ring-num{fill:var(--ink);font-family:IBM Plex 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var(--line);border-radius:var(--radius);min-height:100%;padding:16px;text-decoration:none;display:block}.topic-card:hover{border-color:color-mix(in srgb, var(--amber) 55%, var(--line))}.topic-idx{color:var(--amber);font-family:IBM Plex Mono,monospace;font-size:.78rem}.topic-card h2{margin-top:6px}.topic-card p{color:var(--muted);margin-bottom:.4rem}.topic-meta{font-size:.82rem;color:var(--ink)!important}.crumb{color:var(--muted);font-size:.88rem}.notes{margin:0;padding-left:1.1rem}.notes li+li{margin-top:.65rem}.topic-progress{margin:0}.quiz-head .progress-line{color:var(--muted);margin:0 0 8px;font-family:IBM Plex Mono,monospace}.bar{background:var(--bg-soft);border-radius:99px;height:6px;overflow:hidden}.bar span{background:var(--amber);height:100%;transition:width .25s;display:block}.question h1{margin-bottom:14px;font-size:clamp(1.2rem,4vw,1.55rem)}.options{flex-direction:column;gap:8px;display:flex}.option{text-align:left;border:1px solid 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a:hover{color:var(--ink);border-color:var(--amber)}.weak-list{margin:0;padding:0;list-style:none}.weak-list li+li{border-top:1px solid var(--line);margin-top:12px;padding-top:12px}.danger-panel{border-style:dashed}@media (width<=420px){.brand-text em{display:none}}@media (width>=720px){.topbar{flex-wrap:nowrap;padding:14px 24px}.nav{flex:auto;order:0;justify-content:flex-end;margin-left:auto;display:flex}.nav-link{padding:8px 10px;font-size:.88rem}.theme-btn{margin-left:0}.topic-grid{grid-template-columns:1fr 1fr}.main{padding-top:32px}}@media (prefers-reduced-motion:reduce){.ring-value,.bar span{transition:none}}