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*{scroll-behavior:auto!important;animation:none!important;transition:none!important}.inline-check{display:inline-block;margin-right:15px}#break-banner{position:sticky;top:0;z-index:10}button[data-action='rest']{font-weight:500}.nowrap{white-space:nowrap}@media(max-width:900px){header{padding:15px 22px}.hero{grid-template-columns:1.15fr 1fr;gap:10px}.question-layout{grid-template-columns:1fr}.side-tools{flex-direction:row;flex-wrap:wrap}.side-tools button{flex:1 0 130px}.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}.question-card{padding:24px}.hero-art{align-self:center}}@media(max-width:600px){header{height:auto;padding:16px}.brand{font-size:16px;gap:8px}.brand img{width:35px;height:35px}.brand small{font-size:9px}.header-actions button{padding:7px 10px;font-size:12px}nav{gap:0;padding:0 8px 10px}nav button{padding:8px 10px;font-size:14px;flex:1;white-space:nowrap}main{padding:22px 16px 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.overview-entry{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:20px 0 28px}.overview-entry p{margin:3px 0 0;color:var(--muted);font-size:14px}.overview-entry button{flex-shrink:0}.overview-lead{font-size:18px;max-width:820px}.logic-flow{display:flex;align-items:center;gap:16px;margin:22px 0}.logic-flow div{flex:1;border-radius:15px;background:#ffffffb8;padding:18px}.logic-flow strong,.logic-flow span{display:block}.logic-flow span{font-size:14px;color:var(--muted);margin-top:5px}.route-overview-row h3{margin:12px 0}.return-plan{padding-left:24px}.return-plan li{padding:8px 0}.return-plan span{display:block;color:var(--muted)}@media(max-width:600px){nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:3px}nav button{white-space:normal;padding:8px 5px}.overview-entry{align-items:flex-start;flex-direction:column;gap:8px}.overview-entry button{padding-left:0}.logic-flow{flex-direction:column;align-items:stretch;gap:6px}.logic-flow>b{text-align:center;transform:rotate(90deg)}.logic-flow div{padding:14px}.overview-lead{font-size:16px}}

/* Functional navigation, original warm visual style. */
.brand small{letter-spacing:0;font-size:12px;font-weight:400}.current-task{border-left:4px solid var(--orange);background:var(--mint);padding:28px}.page-head h1{margin-bottom:0}@media(max-width:600px){.brand small{font-size:10px;max-width:165px}.brand{font-size:15px}.brand img{width:30px;height:30px}.current-task{padding:20px}.header-actions{gap:4px}.header-actions button{padding:7px}}

.status-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:left;padding:16px max(20px,calc((100vw - 1120px)/2))}.offline-corner{display:flex;align-items:center;gap:10px;flex-shrink:0}.offline-corner span{font-size:12px}.offline-corner button{font-size:12px;padding:7px 11px;font-weight:500}@media(max-width:600px){.status-bar{flex-wrap:wrap;padding:16px}.offline-corner{margin-left:auto;flex-wrap:wrap;justify-content:flex-end}}

.learning-sequence{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:12px 0 20px;font-size:14px}.tube-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tube-actions button{padding:10px 4px;font-size:14px}#orientation-number{display:block;margin-top:10px;width:180px}.lesson-guide li{margin:8px 0}