:root{--learn-cream:#f6efd9;--learn-green:#e8f0e6;--learn-gold:#c49443}
.learning-hero{padding:42px 0 28px;max-width:900px}.learning-hero h1{font-size:clamp(40px,5vw,64px)}.learning-hero .deck{max-width:760px}.path-strip{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.path-strip span{padding:5px 12px;background:var(--learn-green);border-radius:30px;font-size:13px}.chapter-grid,.record-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.chapter-card{padding:25px;border:1px solid var(--line);border-radius:15px;background:#fff}.chapter-card h2{font-size:27px}.chapter-card p{font-size:16px}.chapter-card .button{margin-top:15px}.curriculum-banner{padding:24px;background:var(--learn-cream);border-radius:12px;margin:26px 0}.journey-shell{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}.journey-nav{position:sticky;top:15px;padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff}.journey-nav p{font-size:13px}.journey-nav button{display:flex;justify-content:flex-start;width:100%;text-align:left;margin:6px 0;border-color:transparent;background:transparent;font-size:15px}.journey-nav button[aria-current=step]{background:var(--green);color:#fff}.journey-nav small{display:block;font-size:12px;margin-top:18px;color:var(--muted)}#journey-content{min-width:0;scroll-margin-top:20px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px}#journey-content:focus{outline:none}#journey-content h2{font-size:33px}.workspace-bar{display:flex;align-items:start;gap:22px;background:#edf2e8;border-radius:12px;padding:22px;margin:15px 0 24px}.workspace-bar>div:first-child{flex:1}.workspace-bar label{font-size:14px}.workspace-bar select{max-width:250px}.workspace-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.workspace-actions button{font-size:13px}.workspace-progress{flex:1.4}.workspace-progress progress{width:100%;accent-color:var(--green);height:14px}.workspace-progress p{font-size:14px;margin-bottom:10px}.lesson-picker{display:block;margin-bottom:25px;font-size:14px}.lesson-picker select{max-width:480px}.recap{padding:18px;border-left:3px solid #b3c8ae;background:#f6f8f2;font-size:16px}.explorer{background:#f3f5ea;border:1px solid #cbd5bb;border-radius:13px;padding:24px;margin:26px 0}.explorer-top{display:flex;gap:18px;align-items:start;justify-content:space-between}.explorer-top h3{margin:0}.explorer-top label{font-size:13px}.explorer-top select{margin-bottom:15px}.diagram{min-height:215px;border:1px solid #d5dfcc;border-radius:10px;background:#fff;padding:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow-wrap:anywhere}.factor-pill{display:inline-flex;align-items:center;justify-content:center;min-width:42px;min-height:42px;padding:4px 12px;background:#edf1e9;border:1px solid #b6c9b2;border-radius:10px;color:#254539;font-size:22px;white-space:nowrap}.factor-pill.active{background:#1c5d49;border-color:#1c5d49;color:white}.factor-root .factor-pill{font-size:30px;padding:8px 22px}.branch-lines{font-size:30px;line-height:1.6;color:#6e8d68}.factor-row{display:flex;gap:10px;align-items:center;justify-content:center;flex-wrap:wrap}.diagram-note{font-size:14px;color:#52665c;text-align:center;margin:15px 0 0}.diagram-equation{font-size:22px;text-align:center;margin:14px 0 0}.number-lists{width:100%;max-width:520px}.number-lists>p{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:10px 0;font-size:22px}.number-lists>p>span{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap;font-size:14px}.number-lists .factor-pill{font-size:18px;min-width:33px;min-height:35px;padding:3px 9px}.result-row{display:flex;gap:20px;justify-content:center;width:100%;margin-top:12px}.result-row>div{flex:1;background:#e6eedf;padding:13px;border-radius:10px;text-align:center}.result-row small{display:block;font-size:12px}.result-row>div>span{font-size:29px}.proof-stage{letter-spacing:.12em;font-size:12px;color:var(--muted)}.proof-equation{font:32px Georgia,serif;margin:10px 0 22px;text-align:center}.proof-flow{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}.proof-flow span{font-size:12px;border:1px solid #c6d7bf;padding:7px;border-radius:5px}.proof-flow .current{color:white;background:var(--green)}.step-copy{padding-top:25px;min-height:195px}.step-copy p:last-child{font-size:16px}.controls{display:flex;gap:10px;flex-wrap:wrap}.controls button{font-size:14px}.controls label{font-size:12px;min-width:140px}.controls select{font-size:13px;margin-top:0}.motion{display:flex;gap:8px;align-items:center;font-size:13px;margin-top:17px}.answers{display:grid;gap:9px;margin:14px 0}.answers label{display:flex;align-items:flex-start;gap:9px;padding:13px;border:1px solid #cbd7c6;border-radius:8px;background:#fff;cursor:pointer}.answers label:has(input:checked){background:#edf3e5;border-color:var(--green)}.answers input{margin-top:6px;flex:none;accent-color:var(--green);width:17px;height:17px}.question{min-width:0;border:1px solid var(--line);margin:25px 0;padding:20px;border-radius:11px}.question legend{padding:0 6px;font-size:18px;line-height:1.5;max-width:100%;overflow-wrap:anywhere}.hint-button{font-size:13px;background:#f7f4e7}.hint,.notice{padding:16px;background:#fcf3da;border-left:3px solid #ad781e;font-size:15px}.feedback{padding:14px;border:1px solid #c09237;background:#fff5df;border-radius:8px;font-size:15px;margin:15px 0}.feedback[data-correct=true]{background:#edf4e6;border-color:#74965d}.recommendation{padding:22px;background:#eaf1e4;border-radius:12px;margin:25px 0}.worked{padding:25px;background:#f6f1e2;border-radius:12px;margin:25px 0}.worked p{margin-bottom:0}.notice{margin-top:22px}details{border-top:1px solid var(--line);padding:18px 0}summary{cursor:pointer;min-height:35px}dt{color:var(--green);margin-top:15px}dd{margin:3px 0 14px;font-size:15px}.result-card{border-bottom:1px solid var(--line);padding:20px 0}.result-card h3{font-size:19px}.record-grid{grid-template-columns:1fr}.record-card{padding:18px;border:1px solid var(--line);border-radius:10px}.record-card h3{font-size:19px}.record-card p{margin-bottom:12px;font-size:15px}.checkpoint{padding:18px;background:#edf2e6;border-radius:8px;margin:25px 0}#reflection{margin:14px 0;line-height:1.6}.next-project{margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}.resources{margin:40px 0;padding:28px;border-radius:14px;border:1px solid var(--line);background:#f7f3e8}.resources h2{font-size:28px}.resources ul{padding-left:21px}.reading-lesson{padding:25px 0;border-bottom:1px solid var(--line)}.reading-lesson li{margin-bottom:15px}.reading-lesson h3{font-size:23px}.hub-feature{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;padding:35px;background:#eaf0e2;border:1px solid #cfddc7;border-radius:18px;margin:10px 0 35px}.hub-feature h2{font-size:34px}.hub-map{display:grid;gap:10px;align-content:center}.hub-map>div{padding:15px 20px;border:1px solid #becfb4;border-radius:10px;background:#f8faf3}.hub-map span{font-size:13px;color:var(--muted);display:block}.resource-links{display:flex;gap:15px;flex-wrap:wrap}.resource-links .button{font-size:15px}#conflict-panel{padding:20px;background:#fff1d4;border:1px solid #b28c36;border-radius:8px;margin-bottom:20px}#reset-dialog{padding:20px;background:white;border:1px solid #a97b35;border-radius:10px;margin:18px 0}#reset-dialog p{font-size:15px}#reset-dialog button{margin:5px}#read-all{font-size:14px;margin:10px 0 25px}
@media(max-width:850px){.journey-shell{grid-template-columns:1fr}.journey-nav{position:static;display:flex;flex-wrap:wrap;gap:6px;padding:12px}.journey-nav p,.journey-nav small{width:100%;margin:0}.journey-nav button{width:auto;margin:0;flex:1 1 130px;justify-content:center}.workspace-bar{flex-direction:column}.workspace-progress{width:100%}.chapter-grid{grid-template-columns:1fr}.hub-feature{gap:25px}}
@media(max-width:560px){.learning-hero{padding-top:25px}.learning-hero h1{font-size:43px}.hub-feature{grid-template-columns:1fr;padding:22px}.hub-feature h2{font-size:30px}#journey-content{padding:20px 15px}#journey-content h2{font-size:28px}.explorer{padding:15px}.explorer-top{display:block}.explorer-top label{display:block;margin-top:15px}.diagram{padding:12px;min-height:230px}.factor-row{gap:5px}.factor-pill{font-size:18px;min-width:35px;min-height:35px;padding:3px 8px}.step-copy{min-height:230px}.question{padding:13px 10px}.question legend{font-size:17px}.answers label{padding:12px 10px;font-size:15px}.controls button{flex:1 1 40%}.number-lists>p{gap:10px}.proof-equation{font-size:26px}.resources{padding:22px}.record-card{padding:15px}.workspace-bar{padding:18px}.resource-links{display:grid}.journey-nav button{font-size:13px;flex:1 1 90px}.path-strip{gap:6px}.path-strip span{font-size:12px;padding:4px 9px}}
@media print{.workspace-bar,.journey-shell,#read-all{display:none!important}#reading{display:block!important}.learning-hero{padding:0}.resources{border:0;padding:0}.reading-lesson{break-before:page}.reading-lesson h2{font-size:23pt}.reading-lesson p,.reading-lesson li{font-size:11pt}.resource-links{display:none}.learning-hero h1{font-size:30pt}}