.visual-chapter h2{max-width:610px}.teaching-figure{margin:28px 0 30px;padding:22px 20px;background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}.teaching-svg{display:block;width:100%;max-width:660px;margin:auto;font-family:inherit;font-size:14px}.teaching-svg text{fill:var(--ink)}.teaching-svg .visual-node rect{fill:var(--soft);stroke:var(--line);stroke-width:1.4}.teaching-svg .visual-node.selected rect{fill:var(--tint);stroke:var(--accent);stroke-width:2}.teaching-svg .visual-number{font-size:10px;fill:var(--muted)}.visual-arrow{fill:none;stroke:var(--muted);stroke-width:1.7}.visual-lifeline{stroke:var(--line);stroke-width:2;stroke-dasharray:5 5;fill:none}.message path{stroke:var(--muted);stroke-width:1.8;fill:none}.message.selected path{stroke:var(--accent);stroke-width:2.6}.message.selected text{fill:var(--accent);font-weight:600}.teaching-svg .visual-caption{font-size:12px;fill:var(--muted)}.teaching-svg .visual-glyph{font-size:30px}.teaching-svg .visual-mono{font-size:12px;font-family:Consolas,monospace}.diagram-narrow{display:none;max-width:350px}.teaching-figure figcaption{font-size:12px;line-height:1.8;color:var(--muted);margin-top:10px}.teaching-figure figcaption span{display:block;margin-top:5px}.visual-controls{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}.visual-controls button{font:inherit;font-size:12px;border:1px solid var(--line);background:var(--paper);color:var(--muted);border-radius:8px;padding:9px 11px;cursor:pointer;display:flex;align-items:center;gap:6px;line-height:1.4;text-align:left}.visual-controls button span{font-size:10px;font-variant-numeric:tabular-nums}.visual-controls button[aria-pressed=true]{border-color:var(--accent);background:var(--tint);color:var(--accent)}.visual-controls button:focus-visible,.binary-bits button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.visual-detail{font-size:15px;line-height:1.9;margin:17px 0 0;min-height:58px;padding:13px 0 0;border-top:1px solid var(--line)}.binary-widget{margin:25px 0;padding:24px 18px;border:1px solid var(--line);background:var(--surface);border-radius:13px}.binary-widget figcaption{font-size:14px;margin-bottom:19px}.binary-bits{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:7px;max-width:570px}.binary-bits button{color:var(--muted);background:var(--paper);border:1px solid var(--line);padding:8px 2px;border-radius:9px;font-family:inherit;cursor:pointer}.binary-bits small{font-size:11px;display:block}.binary-bits strong{display:block;font-size:22px;line-height:1.5;font-weight:500}.binary-bits button[aria-pressed=true]{color:var(--accent);border-color:var(--accent);background:var(--tint)}.binary-equation{font-size:20px;margin:22px 0 5px}.binary-hex{font-size:13px;color:var(--muted);margin:8px 0}.comparison-table{border:1px solid var(--line);border-radius:10px;margin:25px 0;overflow:auto}.comparison-table table{border-collapse:collapse;width:100%;font-size:14px;text-align:center}.comparison-table caption{text-align:left;padding:17px;font-size:13px;color:var(--muted)}.comparison-table th,.comparison-table td{padding:12px;border-top:1px solid var(--line)}.comparison-table th{background:var(--soft);font-weight:500}.transcript-note{border-left:2px solid var(--line);padding-left:16px;color:var(--muted);font-size:12px;line-height:1.9}.content-guide{font-size:13px;line-height:1.9;color:var(--muted)}@media(max-width:580px){.teaching-figure{padding:18px 12px}.diagram-wide{display:none}.diagram-narrow{display:block;max-height:410px}.teaching-svg{font-size:15px}.teaching-svg .visual-mono{font-size:12px}.visual-detail{font-size:14px;min-height:80px}.visual-controls{display:grid;grid-template-columns:1fr 1fr;gap:7px}.visual-controls button{font-size:11px;padding:9px 7px}.binary-widget{padding:20px 12px}.binary-bits{gap:4px}.binary-bits strong{font-size:20px}.binary-bits small{font-size:10px}}
.stack-diagram{display:block;max-width:350px;max-height:410px}
.reading-examples{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:0 0 25px}.reading-examples span{font-size:12px;color:var(--muted);margin-right:4px}.reading-examples a{text-decoration:none;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:12px;background:var(--surface)}.reading-examples a:hover{border-color:var(--accent);color:var(--accent)}