.junction-page{padding-top:10px;padding-bottom:28px}.junction-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:25px}.junction-heading h1{font-size:clamp(2.3rem,4vw,3.6rem);margin:10px 0 12px}.junction-heading p{margin:0}.junction-heading>.text-link{white-space:nowrap}.junction-toolbar{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}.junction-picker label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}.junction-picker select{width:100%;max-width:440px;background:white;border:1px solid var(--line-strong);border-radius:10px;padding:12px 40px 12px 14px;min-height:48px;color:var(--ink);font-size:16px}.junction-modes{display:flex;gap:5px;border:1px solid var(--line);background:var(--surface-2);border-radius:var(--pill);padding:5px}.junction-modes button{border:0;background:transparent;padding:12px 17px;border-radius:var(--pill);font-size:14px;font-weight:700;white-space:nowrap;min-height:44px}.junction-modes button[aria-pressed=true]{background:var(--primary);color:#fff}.junction-workspace{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(310px,1fr);border:1px solid var(--line);border-radius:var(--radius-xl);overflow:hidden;background:#fff;box-shadow:0 20px 45px #0000000f}.junction-board{background:#e7eee3;display:flex;flex-direction:column;justify-content:center;min-width:0}.junction-board-top,.junction-board-bottom{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:16px 22px;color:var(--text);font-size:13px}.junction-board-top span:first-child{font-weight:700}.junction-board-bottom{margin-top:auto;flex-wrap:wrap}.junction-board-bottom label{display:flex;align-items:center;gap:7px;min-height:30px;cursor:pointer}.junction-board-bottom input{width:18px;height:18px;accent-color:var(--primary)}#junction-scene{display:block;width:100%;max-height:570px;aspect-ratio:1;overflow:hidden}.junction-compass{fill:#fff;font-size:17px;font-weight:700;text-anchor:middle}.junction-panel{padding:26px 25px;min-width:0;display:flex;flex-direction:column}.junction-panel h2{font-size:1.5rem;letter-spacing:-.035em;line-height:1.2;margin:10px 0 13px}.junction-panel>p{font-size:14px;line-height:1.6;margin-bottom:17px}.junction-choices{display:grid;gap:8px;margin-bottom:15px}.junction-choice{width:100%;display:flex;align-items:center;gap:12px;text-align:left;border:1px solid var(--line-strong);background:#fff;border-radius:11px;padding:10px 12px;min-height:64px;position:relative;transition:background .15s,border-color .15s}.junction-choice:hover:not(:disabled){background:var(--primary-soft);border-color:var(--primary)}.junction-choice[aria-pressed=true]{border-color:var(--primary);background:var(--primary-soft)}.junction-choice span.junction-letter{display:grid;place-items:center;flex-shrink:0;width:38px;height:38px;background:var(--vehicle);color:white;border-radius:10px;font-size:20px;font-weight:750}.junction-choice strong{font-size:15px;display:block;line-height:1.3}.junction-choice small{font-size:13px;color:var(--muted);display:block;margin-top:3px;line-height:1.4}.junction-choice .junction-choice-arrow{margin-left:auto;font-size:23px;flex-shrink:0}.junction-choice:disabled{opacity:.65}.junction-answer{background:var(--surface-3);border:1px solid var(--line);border-radius:11px;padding:15px 16px;min-height:106px}.junction-answer strong{font-size:15px;display:block;margin-bottom:5px}.junction-answer p{font-size:14px;line-height:1.55;color:var(--text);margin:0}.junction-answer[data-state=wrong]{background:var(--wrong-soft);border-color:var(--wrong)}.junction-answer[data-state=wrong] strong{color:var(--wrong-text)}.junction-answer[data-state=success]{background:var(--success-soft);border-color:var(--success)}.junction-panel>#junction-hint{align-self:start;font-size:14px;padding:12px 0;margin:2px 0 3px;min-height:44px}.junction-playback{display:flex;gap:9px;margin-top:15px}.junction-playback .button{font-size:13px;padding:12px 14px;flex:1;gap:5px}.junction-settings{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px}.junction-settings label{font-size:13px;display:flex;align-items:center;gap:6px}.junction-settings select{border:1px solid var(--line-strong);border-radius:6px;padding:9px 5px;background:#fff;font-size:13px;max-width:138px;min-height:40px}.junction-settings button{font-size:13px;min-height:44px}.junction-sequence{border-top:1px solid var(--line);margin-top:17px;padding-top:14px}.junction-sequence>span{font-size:12px;font-weight:650;letter-spacing:.04em;text-transform:uppercase}.junction-sequence ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:10px 0 0;font-size:13px;min-height:29px}.junction-sequence li{display:flex;align-items:center;gap:8px}.junction-sequence li+li:before{content:'→';color:var(--subtle)}.junction-sequence b{padding:6px 10px;background:var(--surface-2);border-radius:6px;min-width:32px;text-align:center}.junction-navigation{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:22px}.junction-navigation>button:first-child{width:42px;height:42px;border:1px solid var(--line-strong);background:#fff;border-radius:8px;flex-shrink:0}.junction-navigation>span{font-size:12px;color:var(--muted)}.junction-navigation>.button{margin-left:auto;font-size:13px;min-height:42px;padding:11px 13px}.junction-editorial{font-size:13px;line-height:1.65;margin-top:17px;margin-bottom:0;max-width:950px}.junction-reading{display:grid;grid-template-columns:1fr 1fr;gap:70px;padding-top:40px;padding-bottom:60px}.junction-reading h2,.junction-related h2{font-size:1.8rem;letter-spacing:-.04em}.junction-rules{padding-left:22px;color:var(--text);font-size:16px;line-height:1.65}.junction-rules li{padding-left:6px;margin-bottom:15px}.junction-rules strong{color:var(--ink)}.junction-reading>div>p{font-size:14px}.junction-lessons details{border-bottom:1px solid var(--line)}.junction-lessons summary{cursor:pointer;padding:17px 24px 17px 0;font-size:15px;line-height:1.45;font-weight:650}.junction-lessons details p{font-size:14px;margin:0 0 12px}.junction-lessons details a{display:block;font-size:13px;text-decoration:underline;margin-bottom:17px}.junction-related{padding-bottom:60px}.junction-related>.small-note{margin-top:24px}.junction-car{cursor:pointer}.junction-car-body{filter:url(#junction-shadow)}.junction-car.passed{opacity:.3;cursor:default}.junction-car.waiting .junction-car-ring{stroke:#fff;stroke-opacity:.25}.junction-car.active .junction-car-ring{stroke:#fff;stroke-opacity:.9}.junction-path{transition:opacity .15s}.junction-path.passed{opacity:.12}.junction-path.emphasis{stroke-width:7;opacity:1}.junction-sign-label{fill:#fff;font-size:13px;text-anchor:middle;font-weight:750}.junction-path{opacity:.68}.junction-home-promo{margin-top:34px} @media(min-width:1100px){.junction-panel{min-height:650px}} @media(max-width:950px){.junction-workspace{grid-template-columns:minmax(0,1.1fr) minmax(290px,1fr)}.junction-panel{padding:22px 18px}.junction-reading{gap:35px}.junction-heading>.text-link{font-size:13px}.junction-board-top,.junction-board-bottom{padding:14px;font-size:12px}} @media(max-width:720px){.junction-heading{display:block;margin-bottom:20px}.junction-heading>.text-link{display:inline-block;margin-top:10px;font-size:14px}.junction-heading h1{font-size:2.5rem}.junction-heading p{font-size:15px}.junction-toolbar{display:grid;gap:12px;align-items:stretch}.junction-picker select{max-width:none}.junction-modes{justify-content:stretch}.junction-modes button{flex:1}.junction-workspace{grid-template-columns:1fr;border-radius:16px}.junction-board-top{padding:14px 18px}.junction-board-bottom{padding:10px 14px;font-size:12px}#junction-scene{max-height:480px}.junction-panel{padding:22px}.junction-panel h2{font-size:1.6rem}.junction-panel>p{font-size:15px}.junction-choices{grid-template-columns:1fr}.junction-reading{grid-template-columns:1fr;padding-top:25px;gap:30px}.junction-reading h2{font-size:1.6rem}.junction-settings label{flex-wrap:wrap}.junction-settings select{font-size:14px}.junction-editorial{font-size:12px}.junction-navigation{gap:8px}.junction-navigation>span{font-size:12px}} @media(prefers-reduced-motion:reduce){.junction-choice,.junction-path{transition:none}} @media print{.junction-toolbar,.junction-choices,.junction-playback,.junction-settings,.junction-navigation,#junction-hint{display:none}.junction-workspace{display:block}.junction-board{max-width:450px}.junction-reading{display:block}} .junction-board-message{margin:0 18px 14px;padding:13px 15px;border:1px solid var(--line);border-radius:10px;background:var(--surface-3);min-height:95px}.junction-board-message strong{display:block;font-size:15px;line-height:1.4}.junction-board-message p{font-size:14px;line-height:1.55;margin:5px 0 0;color:var(--text)}.junction-board-message[data-state=wrong]{background:var(--wrong-soft);border-color:var(--wrong)}.junction-board>.junction-playback{margin:0;padding:0 18px 14px}.junction-board-bottom{margin-top:0}@media(max-width:720px){.junction-board-message{margin:0 12px 10px;min-height:100px}.junction-board-message p{font-size:14px}.junction-board>.junction-playback{padding:0 12px 8px}.junction-board-top{padding:10px 14px}.junction-heading .eyebrow{font-size:11px}.junction-heading h1{font-size:2.2rem;margin:8px 0 10px}.junction-toolbar{gap:10px}.junction-heading{margin-bottom:15px}.junction-board-bottom{padding:8px 14px}} .junction-collision-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:0 18px 15px}.junction-collision-actions>.button{padding:13px 12px;font-size:14px;min-height:46px}.junction-collision-actions>.text-button{grid-column:1/-1;font-size:14px;min-height:44px;text-align:center}.junction-car.collided{cursor:default}.junction-car.collided .junction-car-ring{stroke:#ffd18a;stroke-opacity:1;stroke-width:3}.junction-impact-ring,.junction-impact-spark{pointer-events:none}.junction-board-message[data-state=wrong] strong{color:var(--wrong-text)}@media(max-width:720px){.junction-collision-actions{padding:0 12px 10px;gap:8px}.junction-collision-actions>.button{font-size:13px}} .junction-car.holding .junction-car-ring{stroke:#ffe09c;stroke-opacity:1;stroke-dasharray:6 4}.junction-reference{display:grid;grid-template-columns:240px 1fr;gap:32px;margin-top:24px;padding:26px;border:1px solid var(--line);border-radius:16px;background:#fff}.junction-reference img{display:block;width:100%;height:auto;margin:15px auto 0;max-width:280px}.junction-reference h2{font-size:1.4rem;margin:0 0 10px}.junction-reference p{font-size:14px;line-height:1.65}.junction-reference summary{font-size:15px;font-weight:650;cursor:pointer;padding:12px 0}.junction-reference .text-link{display:inline-block;margin-top:14px;font-size:14px}#junction-reference-text,.junction-source-copy{white-space:pre-line}.junction-catalog{padding-bottom:60px;scroll-margin-top:25px}.junction-catalog-heading{display:flex;justify-content:space-between;gap:25px;align-items:center;margin-bottom:28px}.junction-catalog h2{font-size:2rem;letter-spacing:-.04em;margin:10px 0}.junction-catalog-heading p{font-size:15px;max-width:650px}.junction-catalog-heading>a{white-space:nowrap}.junction-figure-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.junction-figure-card{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;align-self:start}.junction-figure-open{display:block;padding:14px}.junction-figure-open:hover{background:var(--surface-3)}.junction-figure-open[aria-current=true]{box-shadow:inset 0 0 0 2px var(--primary);background:var(--primary-soft)}.junction-figure-image{display:flex;align-items:center;justify-content:center;aspect-ratio:1.25;background:#fff;border-radius:8px;padding:8px;margin-bottom:14px}.junction-figure-image img{width:100%;height:100%;object-fit:contain}.junction-figure-open strong{display:flex;justify-content:space-between;align-items:center;font-size:17px}.junction-figure-open strong>span{font-size:11px;padding:4px 7px;border-radius:5px;background:var(--surface-2)}.junction-figure-cta{display:block;font-size:13px;margin-top:9px;font-weight:600}.junction-figure-card details{border-top:1px solid var(--line);padding:0 14px 14px}.junction-figure-card summary{font-size:13px;cursor:pointer;padding-top:14px;font-weight:600}.junction-figure-card details p{font-size:13px;line-height:1.65}.junction-figure-card details a{font-size:13px;text-decoration:underline}.junction-figure-order{font-weight:650;color:var(--primary)}#junction-lab{scroll-margin-top:20px}@media(max-width:950px){.junction-figure-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:720px){.junction-reference{grid-template-columns:1fr;gap:24px;padding:20px}.junction-reference img{max-width:240px}.junction-catalog-heading{display:block}.junction-catalog h2{font-size:1.7rem}.junction-catalog-heading>a{display:inline-block;margin-top:5px}.junction-figure-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.junction-figure-open{padding:10px}.junction-figure-open strong{font-size:15px}.junction-figure-cta{font-size:12px;line-height:1.5}.junction-figure-card details{padding:0 10px 12px}.junction-figure-card summary{font-size:12px}.junction-catalog-heading .eyebrow{font-size:11px}}@media print{.junction-reference[hidden]{display:none}.junction-figure-grid{grid-template-columns:repeat(3,1fr)}.junction-figure-card{break-inside:avoid}.junction-collision-actions{display:none}} .junction-find{display:flex;align-items:end;gap:24px;margin-bottom:24px}.junction-find label{font-size:14px;font-weight:650;flex:1;max-width:430px}.junction-find input{display:block;width:100%;margin-top:8px;min-height:48px;padding:12px 14px;border:1px solid var(--line-strong);border-radius:10px;background:white;color:var(--ink);font-size:16px}.junction-find p{font-size:13px;margin:0 0 12px}.junction-car.holding{cursor:pointer}@media(max-width:720px){.junction-find{display:block}.junction-find p{margin:12px 0 0}} #junction-answer-text,#junction-board-message-text{white-space:pre-line}