.topic-nav{margin-top:28px}.calculus-library .legacy-link{margin-top:20px}.calculus-library .side-note .formula{font-size:10px;padding:9px 0;background:transparent}.function-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:11px;margin:0 0 16px;color:var(--muted)}.function-bar select{border:1px solid var(--line);border-radius:5px;padding:7px 10px;background:var(--bg);font-size:12px;color:var(--ink)}.mono{font:11px/1.7 ui-monospace,"SFMono-Regular",Consolas,monospace}.calculus-stage{height:clamp(420px,52vh,650px)}#calculus-host{width:100%;height:100%;touch-action:none}#calculus-host canvas{display:block;width:100%;height:100%}.axis-note{font-size:10px;color:var(--muted);line-height:1.8;margin:12px 0}.live-readout{display:flex;gap:24px;padding:15px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}.live-readout>div{flex:1;min-width:100px}.live-readout span{display:block;font-size:10px;color:var(--muted);line-height:1.8}.live-readout strong{display:block;font:16px/1.6 ui-monospace,"SFMono-Regular",Consolas,monospace;margin-top:4px}.live-readout .wide{flex:2}.live-readout .wide strong{font-size:13px}.live-readout .value-state{font:11px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;color:var(--primary);margin-top:3px}.calculus-inspector .parameter-section{min-width:0}.direction-presets{gap:6px}.direction-presets button{font-size:11px;padding:6px 8px}.calculus-inspector .delta-section{margin-top:24px}.calculus-experiment .resources{padding:18px 0}.connection{padding-top:15px}.connection p{font-size:12px;line-height:1.9;max-width:70ch;margin:0 0 12px}.connection a{font-size:11px}.calculus-legend-gradient{background:var(--primary)!important}.calculus-legend-direction{background:var(--blue)!important}.calculus-legend-actual{background:oklch(.6 .14 65)!important}.calculus-legend-tangent{background:oklch(.45 .1 305)!important}.calculus-inspector .element-readout>div{font-size:11px;line-height:1.7}.calculus-inspector .element-readout p{margin-top:9px}.calculus-inspector .copy-link{display:block;margin-top:20px}
@media(max-width:980px){.calculus-inspector{display:grid;grid-template-columns:1fr 1fr;gap:24px}.calculus-inspector .delta-section{margin:0;padding:0;border:0}.calculus-inspector .self-check{grid-column:1 / -1}.calculus-inspector .experiment-idea{grid-column:1 / -1}.calculus-inspector .copy-link{margin:0;grid-column:1 / -1}.calculus-stage{height:440px}}
@media(max-width:700px){.calculus-library{padding:14px 16px}.topic-nav{display:flex;gap:5px;margin:0;flex-wrap:wrap}.topic-nav .model-button{flex:1;justify-content:center;font-size:11px;padding:8px 6px;margin:0}.topic-nav .model-icon{width:14px;font-size:15px}.calculus-library .legacy-link{display:inline-block;margin:12px 15px 0 0;text-align:left}.calculus-library .side-note{display:none}.calculus-stage{height:400px;min-height:360px}.calculus-stage .drag-hint{font-size:8px}.calculus-stage .view-switch button{padding:5px 6px}.calculus-experiment h2{font-size:21px}.function-bar{gap:8px}.function-bar .mono{width:100%;font-size:11px}.live-readout{gap:12px}.live-readout strong{font-size:14px}.live-readout .wide{min-width:150px}.calculus-inspector{display:block}.calculus-inspector .delta-section{border-top:1px solid var(--line);margin-top:23px;padding-top:21px}.calculus-inspector .experiment-idea{margin-top:22px;padding-top:20px}.calculus-inspector .copy-link{margin-top:22px}.connection .formula{font-size:11px}.calculus-experiment .experiment-heading .secondary{font-size:10px;padding:6px 8px}.calculus-experiment .geometry-explanation>p:first-of-type{font-size:12px}.top-right{gap:15px}.top-right .text-button{font-size:10px}}
.lesson-reading.calculus-workspace{grid-template-columns:225px minmax(0,1fr);max-width:1320px}.lesson-reading .calculus-inspector,.lesson-reading #save-image{display:none}.lesson-reading .calculus-experiment{max-width:1000px;padding:34px 44px 40px}.lesson-orientation{padding:0 0 20px;border-bottom:1px solid var(--line);max-width:80ch}.lesson-orientation p:first-child{font-size:14px;line-height:1.9}.lesson-orientation p+p{margin-top:9px;font-size:12px;line-height:1.8;color:var(--muted)}.lesson-tabs{display:flex;flex-wrap:wrap;gap:4px;padding:16px 0 18px}.lesson-tabs button{display:flex;align-items:center;gap:7px;background:transparent;border:1px solid transparent;border-radius:5px;padding:9px 12px;font-size:12px;color:var(--muted)}.lesson-tabs button span{font:11px ui-monospace,monospace}.lesson-tabs button[aria-selected=true]{background:var(--primary-soft);border-color:var(--line);color:var(--primary);font-weight:650}.lesson-panel{max-width:80ch;min-height:280px;line-height:1.95;font-size:14px}.lesson-panel h3{font-size:19px;line-height:1.7;font-weight:650;margin:7px 0 18px}.lesson-panel h4{font-size:14px;line-height:1.8;font-weight:650;margin:0 0 8px}.lesson-panel p{margin:0 0 15px}.lesson-panel strong{font-weight:650}.lesson-math{font:14px/2 ui-monospace,"SFMono-Regular","PingFang SC",monospace;background:var(--surface);padding:14px 17px;margin:16px 0 18px;border-radius:5px;overflow-wrap:anywhere}.lesson-math sub{font-size:10px}.reasoning-steps{padding-left:24px;margin:8px 0 24px}.reasoning-steps>li{padding:0 0 14px 7px;margin:0 0 13px;border-bottom:1px solid var(--line)}.reasoning-steps>li:last-child{border:0;margin-bottom:0}.reasoning-steps>li::marker{font:12px ui-monospace,monospace;color:var(--primary)}.reasoning-steps p:last-child{margin-bottom:0}.lesson-table-wrap{overflow-x:auto;margin:20px 0 23px;max-width:100%;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.lesson-panel table{border-collapse:collapse;text-align:left;width:100%;min-width:440px;font-size:12px;line-height:1.9}.lesson-panel th{font-weight:650;color:var(--primary);background:var(--surface)}.lesson-panel th,.lesson-panel td{padding:11px 13px;vertical-align:top;border-bottom:1px solid var(--line)}.lesson-panel tr:last-child td{border:0}.lesson-navigation{display:flex;align-items:center;justify-content:space-between;max-width:80ch;padding-top:20px;margin-top:22px;border-top:1px solid var(--line)}.lesson-navigation span{font:11px ui-monospace,monospace;color:var(--muted)}.lesson-references{max-width:80ch;display:flex;flex-wrap:wrap;gap:10px 22px;padding:20px 0 24px;font-size:11px;line-height:1.8;color:var(--muted)}.lesson-references>span{width:100%}.verification-heading{display:flex;justify-content:space-between;align-items:start;gap:20px;border-top:1px solid var(--line);padding:24px 0 18px;margin-top:8px}.verification-heading h3{font-size:15px;margin-bottom:7px}.verification-heading p{font-size:11px;color:var(--muted);line-height:1.8;max-width:60ch}.verification-actions{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end}.verification-actions button{font-size:10px;padding:7px 9px}.knowledge-analysis .lesson-references{padding-bottom:12px}.knowledge-analysis .lesson-panel{min-height:0}.calculus-experiment .knowledge-analysis{margin-bottom:12px}
@media(max-width:1150px){.lesson-reading.calculus-workspace{grid-template-columns:195px minmax(0,1fr)}.lesson-reading .calculus-experiment{padding:28px 30px}.lesson-tabs button{padding:8px 9px;font-size:11px}.lesson-tabs{gap:3px}}
@media(max-width:980px){.lesson-reading .calculus-library{grid-row:auto}.verification-heading{display:block}.verification-actions{justify-content:start;margin-top:13px}}
@media(max-width:700px){.lesson-reading.calculus-workspace{display:block}.lesson-reading .calculus-experiment{padding:22px 17px 26px}.lesson-orientation p:first-child{font-size:13px}.lesson-orientation p+p{font-size:11px}.lesson-tabs{gap:5px;padding:16px 0}.lesson-tabs button{padding:7px 9px;font-size:11px;flex:1 0 auto;justify-content:center;border-color:var(--line)}.lesson-tabs button span{font-size:10px}.lesson-panel{font-size:13px;line-height:1.95}.lesson-panel h3{font-size:17px;margin:6px 0 15px}.lesson-panel h4{font-size:13px}.lesson-panel p{margin-bottom:13px}.lesson-math{font-size:12px;padding:11px 12px;line-height:2}.reasoning-steps{padding-left:18px}.reasoning-steps>li{padding-left:4px;margin-bottom:12px}.lesson-panel table{font-size:11px;min-width:390px}.lesson-panel th,.lesson-panel td{padding:9px 10px}.lesson-navigation .button{font-size:11px;padding:8px 10px}.lesson-references{font-size:10px;gap:8px 16px}.verification-heading p{font-size:11px}.verification-actions button{font-size:10px}.topic-nav .model-button{font-size:10px;padding:8px 5px}.topic-nav{gap:5px}}

@media(max-width:700px){.lesson-panel table{min-width:0;table-layout:fixed;font-size:10px}.lesson-panel th,.lesson-panel td{padding:9px 6px;overflow-wrap:anywhere}}.element-readout strong{min-width:0;overflow-wrap:anywhere;text-align:right}