:root{--paper: #eef2f6;--card: #ffffff;--ink: #24313f;--ink-soft: #5b6b7b;--line: #d4dde6;--accent: #2457d6;--accent-soft: #e2eafb;--mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:Avenir Next,Seravek,Segoe UI,system-ui,sans-serif;font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}.mono{font-family:var(--mono);font-size:.92em}a{color:var(--accent);text-underline-offset:2px}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.page{max-width:880px;margin:0 auto;padding:28px 16px 48px}.masthead h1{font-size:clamp(1.9rem,5.5vw,2.9rem);line-height:1.05;letter-spacing:-.02em;margin:0 0 14px}.lede{max-width:62ch;color:var(--ink-soft);margin:0 0 30px}.lede em{color:var(--ink)}.ladder{display:flex;align-items:flex-end;gap:6px;border-bottom:2px solid var(--ink)}.rung{flex:1;display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 12px;border:1px solid var(--line);border-bottom:none;border-radius:8px 8px 0 0;background:var(--card);color:var(--ink-soft);font:inherit;font-size:.95rem;text-align:left;cursor:pointer}.rung-1{min-height:58px}.rung-2{min-height:72px}.rung-3{min-height:86px}.rung-4{min-height:100px}.rung-step{color:var(--accent);font-weight:600}.rung-label{font-weight:600}.rung[aria-selected=true]{background:var(--ink);border-color:var(--ink);color:var(--paper)}.rung[aria-selected=true] .rung-step{color:#9db8f0}@media(max-width:719px){.ladder{display:grid;grid-template-columns:1fr 1fr;gap:6px;border-bottom:none;align-items:stretch}.rung,.rung-1,.rung-2,.rung-3,.rung-4{min-height:0;border-bottom:1px solid var(--line);border-radius:8px}}.panel{background:var(--card);border:1px solid var(--line);border-top:none;border-radius:0 0 12px 12px;padding:22px clamp(16px,4vw,32px) 30px}@media(max-width:719px){.panel{border-top:1px solid var(--line);border-radius:12px;margin-top:10px}}.panel-tagline{margin:0 0 18px;color:var(--ink-soft);border-bottom:1px solid var(--line);padding-bottom:12px}.panel-tagline .mono{color:var(--accent)}.panel h2{font-size:1.35rem;letter-spacing:-.01em;margin:0 0 12px}.panel h3{font-size:1.05rem;margin:22px 0 8px}.ste p,.ste li{max-width:62ch}.ste-description{margin:0 0 6px}.ste-procedure{padding-left:1.4em;margin:0}.ste-procedure li{margin-bottom:8px;padding-left:6px}.ste-procedure li::marker{font-family:var(--mono);color:var(--accent);font-weight:600}.ste-rules{margin-top:26px;padding:14px 18px;background:var(--accent-soft);border-radius:10px;font-size:.93rem}.ste-rules p{margin:0 0 8px}.ste-rules ul{margin:0;padding-left:1.2em}.ste-rules li{margin-bottom:3px}.diagram-figure{margin:0}.diagram-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.diagram-svg{display:block;width:100%;min-width:640px;height:auto}.scroll-hint{display:none;color:var(--ink-soft);font-size:.85rem;margin:6px 0 0}@media(max-width:719px){.scroll-hint{display:block}}.diagram-figure figcaption{margin-top:14px;color:var(--ink-soft);font-size:.93rem;max-width:62ch}.playground p{max-width:62ch}.token-row{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}.token-chip{font-family:var(--mono);font-size:.95rem;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:7px;padding:6px 10px;cursor:pointer}.token-chip.is-query{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.temp-control{margin:20px 0 6px;padding:14px 18px;background:var(--paper);border-radius:10px}.temp-control label{display:block;font-weight:600;margin-bottom:6px}.temp-control input[type=range]{width:min(100%,320px);accent-color:var(--accent)}.temp-note{margin:8px 0 0;color:var(--ink-soft);font-size:.9rem}.bars-heading{margin-top:24px}.weight-bars{list-style:none;margin:10px 0 0;padding:0}.weight-bars li{display:grid;grid-template-columns:5.2em 1fr 3.8em;align-items:center;gap:10px;padding:3px 6px;border-radius:6px}.weight-bars li.is-query-row{background:var(--accent-soft)}.bar-token{text-align:right}.bar-track{display:block;height:13px;background:var(--paper);border-radius:5px;overflow:hidden}.bar-fill{display:block;height:100%;background:var(--accent);border-radius:5px;transition:width .12s ease-out}.bar-value{text-align:right;font-variant-numeric:tabular-nums}.storyboard-meta{color:var(--ink-soft);margin:0 0 18px}.scene-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px}.scene-card{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:var(--card);display:flex;flex-direction:column}.scene-head{display:flex;justify-content:space-between;gap:8px;color:var(--accent);font-size:.85rem;margin-bottom:6px}.scene-card h3{margin:0 0 6px;font-size:1rem}.scene-narration{margin:0 0 10px;font-size:.93rem}.scene-visual{margin:auto 0 0;padding-top:8px;border-top:1px dashed var(--line);color:var(--ink-soft);font-size:.88rem}.scene-visual strong{color:var(--ink);font-weight:600}.footer{margin-top:34px;color:var(--ink-soft);font-size:.9rem}.footer a{overflow-wrap:anywhere}@media(prefers-reduced-motion:reduce){.bar-fill{transition:none}}