.step-anim-box{width:100%;min-width:0;margin-top:4px;padding:10px 12px;border:1px solid var(--rule);border-radius:8px;background:var(--paper)}.step-anim-box__title{margin:0 0 8px;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink)}.step-anim{width:100%;min-width:0}.step-anim__transport{display:flex;flex-wrap:nowrap;align-items:center;justify-content:flex-start;gap:4px;min-width:0}.step-anim__meta{display:flex;flex-direction:column;align-items:stretch;gap:6px;margin-top:6px}.step-anim__scrub-wrap{display:flex;align-items:center;gap:6px;width:100%;min-width:0;font-size:10px}.step-anim__scrub-label{flex:0 0 auto}.step-anim__scrub{flex:1 1 auto;min-width:0}.step-anim__btn{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:1.85rem;height:1.85rem;padding:0;border:1px solid var(--rule);border-radius:6px;background:var(--paper);color:var(--ink);cursor:pointer}.step-anim__btn:hover:not(:disabled){background:color-mix(in srgb,var(--acid, #c8102e) 8%,var(--paper))}.step-anim__btn:disabled{opacity:.4;cursor:not-allowed}.step-anim__btn--primary:not(:disabled){border-color:var(--ink);background:color-mix(in srgb,var(--ink) 6%,var(--paper))}.step-anim__icon{display:block;width:1rem;height:1rem;position:relative}.step-anim__icon--start:before{content:"";position:absolute;left:0;top:2px;bottom:2px;width:2px;background:currentColor;border-radius:1px}.step-anim__icon--start:after{content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);border:5px solid transparent;border-right-color:currentColor;border-left:0}.step-anim__icon--step-back:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-40%,-50%);border:5px solid transparent;border-right-color:currentColor;border-left:0}.step-anim__icon--step-fwd:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-60%,-50%);border:5px solid transparent;border-left-color:currentColor;border-right:0}.step-anim__icon--play:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-35%,-50%);border:6px solid transparent;border-left-color:currentColor;border-right:0}.step-anim__icon--pause:before,.step-anim__icon--pause:after{content:"";position:absolute;top:3px;bottom:3px;width:3px;background:currentColor;border-radius:1px}.step-anim__icon--pause:before{left:4px}.step-anim__icon--pause:after{right:4px}.step-anim__icon--end:before{content:"";position:absolute;right:0;top:2px;bottom:2px;width:2px;background:currentColor;border-radius:1px}.step-anim__icon--end:after{content:"";position:absolute;right:4px;top:50%;transform:translateY(-50%);border:5px solid transparent;border-left-color:currentColor;border-right:0}.step-anim__prog-text{flex:0 0 auto;font-family:var(--mono);font-size:10px;letter-spacing:.02em;white-space:nowrap}.step-anim__meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.step-anim__speed-wrap{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;font-size:10px}.step-anim__speed-label{flex:0 0 auto}.step-anim__speed{flex:1 1 5rem;min-width:4rem;max-width:10rem}.step-anim__delay{flex:1 1 4rem;min-width:3.5rem;max-width:6rem;font-family:var(--mono);font-size:11px;padding:2px 6px;border:1px solid var(--rule);border-radius:4px;background:var(--paper-2);color:var(--ink)}.step-anim__speed-lab{flex:0 0 auto;min-width:1.8em}.calc-root{height:calc(100vh - 3.5rem);max-height:calc(100vh - 3.5rem);overflow:hidden;padding:8px 12px 10px;box-sizing:border-box}.calc-root>.comp-split{height:100%;min-height:0}.calc-panel{overflow:hidden;height:100%;min-height:0}.calc-panel-inner{display:flex;flex-direction:column;gap:6px;height:100%;min-height:0;overflow:hidden}.calc-anim-mount{flex:0 0 auto;margin-top:auto;width:100%;min-width:0}[data-calc-controls]{flex:0 1 auto;min-height:0;overflow-y:auto}.calc-insight{flex:1 1 auto;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding:8px 9px;border:1px solid var(--rule);border-radius:8px;background:var(--paper)}.calc-ins-head{font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--paper);background:var(--ink);border-radius:3px;padding:2px 6px;align-self:flex-start}.calc-ins-note{margin:0;font-size:11px;line-height:1.4;color:var(--ink-soft)}.calc-legend{display:flex;flex-wrap:wrap;gap:4px 10px}.calc-chip{display:inline-flex;align-items:center;gap:5px;font-size:10px;color:var(--ink)}.calc-swatch{width:11px;height:11px;border-radius:2px;display:inline-block;flex:0 0 auto}.calc-swatch--ink{background:var(--ink)}.calc-swatch--acid{background:var(--acid)}.calc-swatch--soft{background:var(--ink-soft)}.calc-swatch--fill{background:color-mix(in srgb,var(--ink) 22%,transparent)}.calc-ins-step{font-family:var(--sans);font-size:12px;font-weight:600;color:var(--ink);padding-top:2px;border-top:1px solid var(--rule)}.calc-ins-vals{display:flex;flex-direction:column;gap:2px}.calc-ins-kv{display:flex;justify-content:space-between;gap:8px;font-family:var(--mono);font-size:10px}.calc-ins-k{color:var(--ink-soft)}.calc-ins-v{color:var(--ink);font-weight:600;text-align:right}.calc-afford{margin-top:auto;font-size:9px;line-height:1.4;color:var(--ink-soft);opacity:.85}.calc-expr{font-family:var(--mono)}.calc-expr.is-invalid{border-color:var(--acid);color:var(--acid)}.calc-title{font-family:var(--serif);font-size:1.25rem;font-weight:400;margin:0 0 2px;color:var(--ink)}.calc-field{display:flex;flex-direction:column;gap:2px}.calc-lbl{font-size:9px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}.calc-select,.calc-input{font-family:var(--sans);font-size:12px;padding:4px 6px;border:1px solid var(--rule);border-radius:4px;background:var(--paper);color:var(--ink)}.calc-extra{display:flex;flex-wrap:wrap;gap:6px}.calc-extra .calc-field{flex:1 1 45%;min-width:4.5rem}.calc-check{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--ink)}.calc-note{margin:0;font-size:10px;line-height:1.35;color:var(--ink-soft)}.calc-mode{display:inline-flex;align-self:flex-start;border:1px solid var(--rule);border-radius:999px;overflow:hidden;margin:2px 0 4px}.calc-mode-btn{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;padding:4px 14px;border:none;background:var(--paper);color:var(--ink-soft);cursor:pointer}.calc-mode-btn.is-active{background:var(--ink);color:var(--paper)}.calc-main{display:flex;flex-direction:column;min-height:0;height:100%;overflow:hidden;gap:6px}.calc-challenge-mount{flex:0 0 auto}.calc-challenge-mount[hidden]{display:none}.calc-viz{flex:1 1 auto;min-height:0;border:1px solid var(--rule);border-radius:8px;background:var(--paper-2);overflow:hidden}.calc-canvas{display:block;width:100%;height:100%;min-height:120px}.calc-canvas[hidden]{display:none}.calc-3d{width:100%;height:100%}.calc-3d[hidden]{display:none}.calc-status{flex:0 0 auto;display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:8px;padding:6px 10px;border:1px solid var(--rule);border-radius:6px;background:var(--paper);font-size:11px;min-height:3.2rem}.calc-formula{font-family:var(--mono);color:var(--ink);line-height:1.35}.calc-step{font-family:var(--sans);color:var(--ink-soft);line-height:1.35}.calc-step-n{font-family:var(--mono);font-size:10px}.calc-values{display:flex;flex-wrap:wrap;gap:4px 10px;align-content:flex-start}.calc-kv{display:inline-flex;gap:4px;font-family:var(--mono);font-size:10px}.calc-k{color:var(--ink-soft)}.calc-v{color:var(--ink);font-weight:600}@media (max-width: 800px){.calc-status{grid-template-columns:1fr}}