body:has(.learningPage)>.siteHeader,body:has(.learningPage)>footer{display:none}html:has(.learningPage){scroll-behavior:smooth}body:has(.learningPage){background:#f7faf8}.learningPage{max-width:800px;padding:0 24px 44px;margin:auto}.learningHeader{display:grid;grid-template-columns:40px auto minmax(100px,1fr);align-items:center;grid-gap:18px;gap:18px;padding:18px 0 20px}.learningHeader h1{font-size:16px!important;margin:0!important;white-space:nowrap;color:#41594c}.learningClose{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;color:#64786b;font-size:30px;text-decoration:none;line-height:1}.learningClose:hover{background:#e8eee9}.learningHeader progress{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:10px;border:0;border-radius:99px;background:#e0e9e2;overflow:hidden}.learningHeader progress::-webkit-progress-bar{background:#e0e9e2;border-radius:99px}.learningHeader progress::-webkit-progress-value{background:#308462;border-radius:99px}.learningHeader progress::-moz-progress-bar{background:#308462;border-radius:99px}.learningCard,.learningReview{border:1px solid #dce6df;border-radius:22px;padding:28px;background:white;box-shadow:0 6px 24px #183c2b04}.learningInstruction{font-size:12px;font-weight:700;letter-spacing:.03em;color:#607266;margin:0 0 14px}.learningCard .questionPrompt{font-size:18px;line-height:1.9;color:#263f32;margin:0 0 24px;overflow-wrap:anywhere}.learningChoices{display:grid;grid-gap:12px;gap:12px}.learningChoice{display:grid;grid-template-columns:34px 1fr;align-items:start;grid-gap:10px 12px;gap:10px 12px;width:100%;min-height:64px;padding:15px 16px;border:solid #dee7e0;border-width:2px 2px 4px;border-radius:15px;background:white;color:#2b4435;font:inherit;font-size:16px;line-height:1.8;text-align:left;cursor:pointer;transition:border-color .15s,background .15s}.learningChoice b{display:grid;place-items:center;min-height:32px;border-radius:9px;border:1px solid #dfe8e1;background:#f6faf7;font-size:15px}.learningChoice:hover:not(:disabled){background:#f1f8f3;border-color:#86b29a}.learningChoice:focus-visible,.learningClose:focus-visible,.learningDetails summary:focus-visible,.learningPrimary:focus-visible{outline:3px solid #245e99;outline-offset:4px}.learningChoice:disabled{cursor:default;opacity:1}.learningChoice.isSelected{border-color:#3b8263;background:#f0f8f3}.learningChoice.isCorrect{border-color:#2e8056;background:#eef8f0}.learningChoice.isCorrect b{background:#2e8056;color:white}.learningChoice.isWrong{border-color:#b86630;background:#fff5ed}.learningChoice.isWrong b{background:#b86630;color:white}.choiceState{grid-column:2;font-size:12px;font-weight:800;line-height:1.3}.choiceState:empty{display:none}.learningChoice.isCorrect .choiceState{color:#246444}.learningChoice.isWrong .choiceState{color:#93451e}.answerStatus{margin:14px 0 0;color:#526c5a;font-size:13px;min-height:0}.answerStatus:empty{display:none}.learningReview{margin-top:20px;scroll-margin-top:20px;outline:none}.reviewResult{padding:0 0 20px;border-bottom:1px solid #e0e8e2}.reviewResult h2{font-size:23px;margin:0 0 8px;color:#276845}.reviewResult.isWrong h2{color:#985022}.reviewResult p{font-size:14px;line-height:1.7;margin:0;color:#5b6d60}.normalExplanation,.supplementExplanation{white-space:pre-wrap;color:#3e5848;line-height:1.9;font-size:16px;overflow-wrap:anywhere}.explanationPreamble{padding-top:18px;color:#66786a;font-size:12px}.explanationSection{padding:20px 0;border-bottom:1px solid #e8eee9}.explanationSection h3{font-size:17px;margin:0 0 10px;color:#2b4936}.explanationSection>div{margin:0}.learningDetails{border:1px solid #dee8e0;border-radius:14px;margin-top:22px;overflow:hidden}.learningDetails summary{padding:17px;font-weight:800;color:#345b42;cursor:pointer;line-height:1.7}.learningDetails summary span{display:block;font-weight:400;color:#677e6e;padding-left:15px}.supplementExplanation{padding:0 18px 10px}.learningRelated{margin-top:22px}.learningRelated h3{font-size:13px;margin:0;color:#5c7363}.learningRelated .questionMeta,.learningRelated .syllabusTags{margin:10px 0 0}.learningNext{margin-top:28px;padding-top:20px;border-top:1px solid #e3eae5}.learningPrimary{display:flex;align-items:center;justify-content:center;min-height:52px;padding:14px 20px;border-radius:14px;border-bottom:4px solid #1f583e;background:#2d805c;color:white;text-decoration:none;font-weight:800;font-size:16px}.learningPrimary:hover{background:#266e4e}.learningPage>.questionNav{font-size:12px;margin-top:24px;line-height:1.8}@media(max-width:760px){.learningPage{padding:0 14px 32px}.learningHeader{grid-template-columns:34px auto minmax(50px,1fr);gap:10px;padding:10px 0 12px}.learningHeader h1{font-size:14px!important}.learningClose{width:34px;height:34px;font-size:27px}.learningHeader progress{height:8px}.learningCard,.learningReview{padding:18px 16px;border-radius:18px}.learningInstruction{font-size:11px;margin-bottom:12px}.learningCard .questionPrompt{font-size:16px;line-height:1.9;margin-bottom:20px}.learningChoice{font-size:16px;line-height:1.8;padding:13px 12px;grid-template-columns:30px 1fr;gap:8px 10px;min-height:64px}.learningChoice b{min-height:30px;font-size:14px}.learningReview{scroll-margin-top:12px;margin-top:16px}.reviewResult h2{font-size:21px}.normalExplanation,.supplementExplanation{font-size:15px;line-height:1.95}.explanationSection h3{font-size:16px}.learningNext{margin-top:22px}}@media(prefers-reduced-motion:reduce){html:has(.learningPage){scroll-behavior:auto}.learningChoice{transition:none}}.learningSession .srOnly{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.learningReview{padding:22px}.reviewResult{padding-bottom:14px}.resultLine{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.resultLine h2{font-size:22px;margin:0}.resultLine>span{font-size:14px;color:#5b6d60}.reviewResult .correctAnswerLine{display:grid;grid-template-columns:auto 1fr;grid-gap:8px;gap:8px;margin-top:10px;color:#294d38;font-size:18px;line-height:1.6}.correctAnswerLine b{white-space:nowrap}.normalExplanation,.supplementExplanation{white-space:normal;font-size:17px;line-height:1.75}.explanationSection{padding:15px 0 0;border:0}.explanationSection h3{font-size:20px;line-height:1.45;margin:0 0 6px}.explanationSection p{margin:0;white-space:pre-line;overflow-wrap:anywhere}.optionExplanations{margin-top:14px;padding-top:16px;border-top:1px solid #e3eae5}.optionExplanations p+p{margin-top:12px}.selectedExplanation{background:#fff6ed;border-left:3px solid #b56a36;padding:12px 14px;border-radius:10px;margin-top:14px}.selectedExplanation h3{font-size:16px;margin:0 0 6px;color:#8b4f26;line-height:1.5}.selectedExplanation p{font-size:16px;white-space:pre-line;line-height:1.7;margin:0;color:#5b4c40}.learningDetails{margin-top:16px}.learningDetails summary{padding:13px 15px}.learningDetails summary span{font-size:12px}.originalExplanationText{padding:0 16px 16px;white-space:pre-wrap;font-size:16px;line-height:1.8;color:#3e5848}.originalExplanation{border-color:#e8eee9}.learningRelated{margin-top:16px}.learningNext{margin-top:20px;padding-top:16px}@media(max-width:760px){.learningCard,.learningReview{padding:18px 16px}.learningCard .questionPrompt{font-size:18px;line-height:1.75;margin-bottom:18px}.learningChoice{font-size:17px;line-height:1.65;min-height:64px;padding:13px 12px}.normalExplanation,.supplementExplanation{font-size:17px;line-height:1.75}.explanationSection h3{font-size:20px;margin-bottom:6px}.resultLine h2{font-size:21px}.resultLine>span{font-size:14px}.reviewResult .correctAnswerLine{font-size:18px;gap:7px;margin-top:9px}.selectedExplanation h3{font-size:17px}.selectedExplanation p{font-size:16px}.learningReview{scroll-margin-top:12px}.explanationSection,.optionExplanations{padding-top:14px}}.selectedExplanation{margin:8px 0 10px}.selectedExplanation h4{font-size:17px;line-height:1.5;margin:0 0 5px;color:#8b4f26}.questionPreformatted{overflow-x:auto;max-width:100%;margin-bottom:20px;border-radius:8px}.questionPreformatted:focus-visible{outline:3px solid #245e99;outline-offset:3px}.learningCard .questionPreformatted .questionPrompt{white-space:pre;overflow-wrap:normal;min-width:max-content;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:16px;line-height:1.7;margin:0;padding:6px 0}.learningChoice>span{min-width:0;overflow-wrap:anywhere}.fallbackExplanation{padding:16px 0 0}.learningReview .questionInlineImage{max-width:100%;height:auto}