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summary{cursor:pointer;color:var(--ember);text-underline-offset:.15em;text-decoration:underline;display:inline}.inline-term-def{margin-top:var(--space-2);padding:var(--space-3);background:var(--ember-soft);border-radius:var(--radius-sm);color:var(--ink);font-size:var(--text-small);display:block}.track-map{gap:var(--space-2);margin:0;padding:0;list-style:none;display:grid}.track-node a{gap:var(--space-3);padding:var(--space-3);border-radius:var(--radius-sm);color:var(--ink);align-items:center;text-decoration:none;display:flex}.track-index{border-radius:var(--radius-pill);background:var(--paper);border:1px solid var(--line);width:1.75rem;height:1.75rem;font-size:var(--text-xs);justify-content:center;align-items:center;font-weight:700;display:inline-flex}.track-node.is-current a{background:var(--ember-soft)}.track-node.is-current .track-index{background:var(--ember);border-color:var(--ember);color:#fff}.track-node.is-done .track-index{background:var(--sage-soft);color:var(--sage);border-color:#0000}.track-node.is-upcoming a{color:var(--ink-muted)}.cluster{gap:var(--space-3);flex-wrap:wrap;align-items:center;display:flex}.under-hood{gap:var(--space-3);padding-top:var(--space-4);border-top:1px solid var(--line);display:grid}.module-bar{gap:var(--space-2);display:grid}.goal-line{max-width:var(--measure);margin:0}.sim-stage{padding:var(--space-5);background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-soft)}.sim-columns{gap:var(--space-5);margin-top:var(--space-4);grid-template-columns:1fr 1fr;display:grid}.sim-list{gap:var(--space-2);margin:var(--space-3) 0 0;padding:0;list-style:none;display:grid}.sim-chip{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);padding:.55rem .8rem}.sim-chip-in{background:var(--ember-soft);border-color:#0000}.sim-block{min-height:10rem;padding:var(--space-4);border:1px dashed var(--line);border-radius:var(--radius-card)}.sim-block.is-filled{border-style:solid;border-color:var(--sage);background:color-mix(in srgb, var(--sage-soft) 70%, var(--paper-raised))}.sim-actions{gap:var(--space-3);margin-top:var(--space-5);flex-wrap:wrap;display:flex}.coach-strip{margin:var(--space-3) 0 0;padding:var(--space-3) var(--space-4);background:var(--ember-soft);border-radius:var(--radius-sm);font-size:var(--text-small)}.miner-hud{gap:var(--space-3) var(--space-5);margin-top:var(--space-4);font-size:var(--text-small);flex-wrap:wrap;align-items:center;font-weight:600;display:flex}.weight-meter{height:.5rem;margin-top:var(--space-3);background:var(--ember-soft);border-radius:var(--radius-pill);overflow:hidden}.weight-meter>span{background:var(--ember);height:100%;display:block}.weight-meter.is-over,.sim-block.is-over{outline:2px solid color-mix(in srgb, var(--alert) 45%, transparent)}.sim-tx{text-align:left;cursor:pointer;width:100%;font:inherit;color:inherit;gap:.15rem;display:grid}.sim-tx:disabled{cursor:default}.debrief{margin-top:var(--space-5);padding:var(--space-4);background:var(--sage-soft);border-radius:var(--radius-card)}.debrief ul{margin:var(--space-3) 0 0;padding-left:1.2rem}.placeholder-thumb{max-width:22rem;margin-bottom:var(--space-4);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}.takeaway{gap:var(--space-3);display:grid}.book-panel{gap:var(--space-3);padding:var(--space-5);display:grid}.book-page{gap:var(--space-7);display:grid}.book-layout{gap:var(--space-6);grid-template-columns:1.2fr 1fr;align-items:start;display:grid}.book-lead,.book-states{gap:var(--space-4);display:grid}.book-bullets li{margin-bottom:var(--space-2)}.book-price{font-family:var(--font-display);font-size:2rem;font-weight:600}.book-price small{margin-top:var(--space-1);font-family:var(--font-sans);font-size:var(--text-small);color:var(--ink-muted);font-weight:400;display:block}.peer-slot{margin-top:var(--space-2);padding:var(--space-4);border:1.5px dashed var(--line);border-radius:var(--radius-card);background:var(--paper)}.peer-kicker{margin:0 0 var(--space-2);font-size:var(--text-xs);letter-spacing:.04em;text-transform:uppercase;color:var(--ink-muted);font-weight:700}.peer-apps{gap:var(--space-2);margin:var(--space-3) 0;flex-wrap:wrap;display:flex}.state-grid{gap:var(--space-3);display:grid}.state-card{padding:var(--space-4);gap:var(--space-2);display:grid}.btn:disabled{cursor:not-allowed;opacity:.55}@media (max-width:840px){.playground-grid,.dual-doors,.sim-columns{grid-template-columns:1fr 1fr}.book-layout{grid-template-columns:1fr}}@media (max-width:720px){.nav-toggle{display:inline-flex}.nav-links{padding:var(--space-3);background:var(--paper-raised);border-bottom:1px solid var(--line);box-shadow:var(--shadow-soft);flex-direction:column;align-items:stretch;gap:0;display:none;position:absolute;top:calc(100% + 1px);left:0;right:0}.nav-links.is-open{display:flex}.nav-links a{padding:var(--space-3)}.chapter-bar-row,.playground-grid,.dual-doors,.sim-columns,.book-layout{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}