@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800&display=swap');
:root{--ink:#263f35;--muted:#8a9389;--green:#27664e;--soft:#eef3e9;--line:#e6e9df;--bg:#fafbf6;--orange:#cf8953;font-family:'Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;color:var(--ink);font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-size:18px}button,input{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button{border:0;background:none}a{color:var(--green)}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #d1a354;outline-offset:4px}button:disabled{cursor:default}button:hover:not(:disabled){filter:brightness(.97)}.icon{width:20px;height:20px;flex-shrink:0;vertical-align:middle}.sidebar{position:fixed;inset:0 auto 0 0;width:218px;background:#f2f4eb;border-right:1px solid var(--line);padding:34px 22px;display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:20px;font-weight:800;white-space:nowrap}.brand-icon{width:38px;height:42px;display:grid;place-items:center;background:var(--green);color:#6c6958;border-radius:13px 13px 18px 8px;transform:rotate(-5deg)}.brand-icon .icon{width:25px;height:25px}.brand small{display:block;font-size:14px;letter-spacing:1.7px;font-weight:500;margin-top:5px;color:#62685f}.side-label{font-size:14px;letter-spacing:2px;color:#656860;margin:52px 0 15px 13px}.nav-item{display:flex;align-items:center;gap:13px;width:100%;padding:15px 13px;margin-bottom:9px;border-radius:10px;font-size:16px;color:#626b62;text-align:left}.nav-item.active{background:#e0e9d9;color:#2d6249;font-weight:700}.nav-item b{font-size:14px;margin-left:auto;background:#fff7df;color:#84622d;padding:2px 6px;border-radius:6px}.side-island{margin:auto 0 26px;text-align:center;padding-top:35px;position:relative}.plant{font-size:59px;display:block;filter:saturate(.5);margin-bottom:16px}.side-island strong{font-size:18px;line-height:1.9;letter-spacing:2px}.side-island p{font-size:14px;color:#61685c;line-height:2}.side-help{font-size:16px;color:#5f6b5b;display:flex;align-items:center;gap:8px;justify-content:center;padding:13px 0;border-top:1px solid #e0e5d7}.side-help .icon{width:16px}.side-foot{font-size:14px;color:#65695f;text-align:center;padding-top:12px}.live-dot{display:inline-block;width:5px;height:5px;background:#7ea77c;border-radius:50%;margin-right:6px}.workspace{margin-left:218px}.topbar{height:81px;padding:0 38px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;background:#fdfdf9}.breadcrumb{font-size:16px;color:#636962;display:flex;gap:15px;align-items:center}.breadcrumb span{color:#676963}.breadcrumb 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.icon{width:17px;height:17px}.hero-caption{font-size:14px;color:#666856;margin-top:11px;display:flex;gap:5px;align-items:center}.hero-caption .icon{width:11px;height:11px}.landscape{position:absolute;right:-11px;bottom:0;width:61%;height:100%;z-index:1}.hero-stamp{position:absolute;right:22px;top:22px;font-size:14px;letter-spacing:2px;line-height:1.6;color:#686a59;transform:rotate(8deg)}.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:21px 0 29px;border:1px solid var(--line);background:#fffefa;border-radius:12px;padding:20px 0}.stats>div{display:flex;gap:17px;justify-content:center;align-items:center;border-right:1px solid var(--line)}.stats>div:last-child{border:0}.stats>div>.icon{width:30px;height:30px;color:#68694f;padding:4px;background:#f5f5e9;border-radius:8px}.stats strong{font-size:24px;font-weight:700;letter-spacing:.3px}.stats strong small{font-size:14px;color:#676960;font-weight:400}.stats label{display:block;font-size:14px;color:#65695d;margin-top:4px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:15px}.section-heading h2{font-size:20px;margin:0;font-weight:700;letter-spacing:.6px}.section-heading>span{font-size:14px;color:#66695c;letter-spacing:.8px}.section-heading p{font-size:14px;color:#666a5e;margin:8px 0 0}.subject-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.subject-card{padding:19px 17px 14px;border:1px solid var(--line);border-radius:12px;background:#fffefa;text-align:left;position:relative}.subject-card.selected{border:1.5px solid var(--subject);box-shadow:0 3px 9px #35583e06;background:color-mix(in srgb,var(--subject) 4%,#fffefa)}.subject-top{display:flex;align-items:center;gap:9px}.subject-symbol{display:grid;place-items:center;background:color-mix(in srgb,var(--subject) 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span:last-child{color:var(--subject)}.map-section{margin-top:31px}.label-tag{display:inline-block;font-size:14px;color:#5c6c56;background:#edf1e6;padding:4px 9px;border-radius:5px;vertical-align:middle;font-weight:400;letter-spacing:0}.map-section h2 .label-tag{margin-left:8px}.grade-picker{display:flex;gap:6px;background:#eff2e8;border:1px solid #e8ecdf;padding:5px;border-radius:10px;margin:19px 0 17px}.grade-picker button{flex:1;padding:9px 4px;border-radius:6px;font-size:16px;color:#626958}.grade-picker button.active{background:#fffefa;color:#35674b;box-shadow:0 2px 5px #334c3020;font-weight:700}.chapter-tabs{display:flex;gap:7px;overflow-x:auto;margin-bottom:14px;padding-bottom:4px;scrollbar-width:thin}.chapter-tabs button{white-space:nowrap;font-size:14px;padding:8px 10px;border:1px solid #e8ebdf;border-radius:6px;color:#65695e;background:#fdfdf9}.chapter-tabs button.active{color:#3f7056;border-color:#b6c7aa;background:#edf2e7}.chapter-tabs small{margin-right:5px;opacity:.6;font-size:14px}.map-topline{display:flex;justify-content:space-between;padding:17px 19px 0;border:1px solid var(--line);border-bottom:0;border-radius:12px 12px 0 0;background:#f5f7ee;font-size:14px;color:#626c56}.map-topline b{color:#4a6e4f;font-weight:500}.map-topline>span:last-child{font-size:14px}.level-grid{display:grid;grid-template-columns:repeat(10,1fr);row-gap:20px;padding:28px 12px 21px;background-color:#f5f7ee;background-image:radial-gradient(#dbe1ce .7px,transparent .7px);background-size:13px 13px;border:1px solid var(--line);border-top:0;border-bottom:0}.level{display:flex;align-items:center;flex-direction:column;position:relative;min-width:0;padding:0 0 6px}.level>span{border:1px solid #e0e6d5;border-bottom:4px solid #dce3cf;border-radius:50%;height:39px;width:39px;display:grid;place-items:center;color:#656a5e;background:#edf1e4;font-size:16px}.level>span 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.3s}.question-meta{display:flex;justify-content:space-between;font-size:14px;color:#626856}.question-title{font-size:24px;line-height:1.9;margin:18px 0 22px;font-weight:600}.question-display{border:1px solid #e5e8d5;background:#eff3e5;border-radius:11px;text-align:center;padding:23px 16px;font-size:28px;font-weight:600;letter-spacing:4px;margin-bottom:23px;line-height:1.8}.question-display.english{font-family:Georgia,serif;letter-spacing:1px;font-size:25px}.passage{line-height:2.2;background:#f5f1e5;padding:20px;border-radius:10px;font-size:18px;margin-bottom:20px;color:#616b54}.clue{font-size:16px;color:#6c6953}.options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.option{min-height:66px;display:flex;align-items:center;text-align:left;gap:14px;background:#fffefa;border:1px solid #e0e5d6;border-radius:9px;padding:13px 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auto}.input-label{display:block;font-size:16px;color:#606958;margin:15px 0 10px}.answer-row{display:flex;gap:10px;margin:10px 0 20px}input{border:1px solid #dbe2ce;padding:13px 15px;min-width:0;background:white;border-radius:8px;color:var(--ink);flex:1;width:100%}input::placeholder{color:#666a5f}.sudoku-wrap{max-width:390px;margin:auto}.sudoku{display:grid;grid-template-columns:repeat(var(--n),1fr);border:2px solid #5a7851;background:#fdfdf8;aspect-ratio:1;border-radius:4px;overflow:hidden}.sudoku-cell{font-family:system-ui,sans-serif;aspect-ratio:1;padding:0;border-right:1px solid #d6dfca;border-bottom:1px solid #d6dfca;display:grid;place-items:center;font-size:clamp(15px,3vw,23px);color:#4a7144;background:#fffefa;border-radius:0}.sudoku-cell.given{background:#eaf0e0;font-weight:600;color:#51634a}.sudoku-cell.box-bottom{border-bottom:2px solid #5a7851}.sudoku-cell.box-right{border-right:2px solid #5a7851}.sudoku-cell.selected{background:#dceacb;box-shadow:inset 0 0 0 2px #688753}.number-pad{display:flex;gap:5px;justify-content:center;margin:15px 0;flex-wrap:wrap}.number-pad button{background:#ecf1e3;border:1px solid #d9e2cb;border-radius:6px;min-width:30px;height:35px;font-size:16px}.number-pad button:last-child{font-size:14px;padding:0 9px}.sudoku-submit{display:flex;width:100%}.result{text-align:center;padding:20px 0 10px}.result-art{font-size:80px;margin-bottom:17px}.result-stars{font-size:39px;letter-spacing:8px;color:#696656}.result-stars .lit{color:#7a642f}.result h2{font-size:25px;margin:20px 0 16px}.result p{font-size:16px;line-height:1.9;color:#606953}.result p strong{font-size:24px;color:#516e46}.result-buttons{display:flex;align-items:center;justify-content:center;gap:20px;margin:28px 0 15px}.guide-content p,#info>p{font-size:16px;line-height:2.1;color:#626b57}.guide-content h3{font-size:18px;margin-top:24px}.guide-content a{font-size:16px}#jump-form{margin-top:25px}#jump-form label{font-size:16px;color:#5e6a51}#toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);background:#294c3e;color:#fff9eb;padding:13px 23px;border-radius:10px;box-shadow:0 5px 20px #0002;font-size:16px;opacity:0;transition:.2s;pointer-events:none;z-index:100;max-width:90vw;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}
@media(min-width:1600px){.hero{height:345px}.hero-copy{padding:32px 39px}.hero h2{font-size:41px}.hero p{font-size:16px}.landscape{width:62%}.subject-card p{font-size:14px}.subject-en{font-size:14px}.level-grid{row-gap:24px;padding:33px 20px}.level>span{width:45px;height:45px}}
@media(max-width:1250px){.sidebar{width:190px;padding:28px 16px}.workspace{margin-left:190px}.page-columns{padding:26px 25px 0;grid-template-columns:minmax(0,1fr) 210px;gap:23px}.rightbar{padding-left:20px}.topbar{padding:0 25px}.brand{font-size:18px}.hero h2{font-size:29px}.hero-copy{padding:25px 24px}.hero p{font-size:14px}.landscape{right:-45px;width:62%;opacity:.9}.hero-stamp{display:none}.subject-cards{gap:9px}.subject-card{padding:16px 12px}.subject-en{font-size:14px}.subject-card p{font-size:14px}.subject-symbol{width:30px;height:32px;font-size:24px}.selected-mark{position:absolute;top:12px;right:10px}.welcome h1{font-size:24px}.level>span{height:33px;width:33px}.map-bottom{flex-wrap:wrap;gap:10px}.stats>div{gap:10px}}
@media(max-width:1050px){.rightbar{display:none}.page-columns{display:block;max-width:1000px}.hero{height:320px}.hero h2{font-size:35px}.hero p{font-size:16px}.landscape{width:60%;right:0}.subject-en{font-size:14px}.subject-card p{font-size:14px}.level>span{width:40px;height:40px}.hero-stamp{display:block}}
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