@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap');
:root{--bg:#f7f8f4;--paper:#fff;--ink:#29372e;--muted:#8a9188;--green:#50664f;--line:#e5e8df;--soft:#edf1e7;--gold:#c1a365}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px 'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;background:none;color:inherit}button:hover{filter:brightness(.93)}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #b9c8ae;outline-offset:3px}button:disabled{opacity:.4;cursor:default}a{color:inherit;text-decoration:none}.sidebar{width:224px;position:fixed;inset:0 auto 0 0;padding:42px 22px 28px;background:#f0f2eb;border-right:1px solid var(--line);display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;font-size:19px;font-weight:600;letter-spacing:1px}.brand-mark{display:grid;place-items:center;background:var(--green);color:#fff;width:40px;height:43px;border-radius:13px 13px 5px 13px;font-size:39px;font-weight:400}.brand small{display:block;font-size:9px;letter-spacing:3.4px;color:#8c9686;font-weight:500;margin-top:5px}.side-label{font-size:10px;letter-spacing:1px;color:#939c8b;margin:57px 12px 17px}.nav{width:100%;display:flex;align-items:center;text-align:left;padding:15px 14px;margin-bottom:8px;border-radius:8px;font-size:13px;color:#737d6f;gap:12px}.nav>span{font-size:20px}.nav i{font-style:normal;font-size:11px;margin-left:auto}.nav.active{background:#dfe6d5;color:#405439;font-weight:600}.side-bottom{margin-top:auto;font-size:10px;color:#8a9383;padding:24px 9px 0}.status-dot{width:5px;height:5px;display:inline-block;background:#8a9c73;border-radius:50%;margin-right:6px;vertical-align:middle}.side-bottom button{display:block;font-size:11px;padding:12px 0 0}.side-bottom p{border-top:1px solid #dde2d5;padding-top:20px;margin-top:26px;font-size:10px}.shell{margin-left:224px}header{height:78px;padding:0 46px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);font-size:11px}.breadcrumb{color:#90978d}.breadcrumb span{margin:0 14px;color:#b8bdb4}.breadcrumb strong{font-weight:500;color:#52614e}.local-badge{font-size:10px;color:#89917f}main{max-width:1450px;margin:auto;padding:42px 46px 20px}.intro{display:flex;justify-content:space-between;align-items:center;padding:6px 0 34px}.eyebrow{font-size:9px;letter-spacing:2.2px;color:#8a947e;font-weight:500}h1{font:600 34px 'Noto Serif SC',serif;letter-spacing:2px;margin:13px 0 12px}h1>span{color:#9aaa85}.intro 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small{font-size:9px;color:#9ba293}.workspace{background:var(--paper);border:1px solid var(--line);border-radius:11px;overflow:hidden}.panel-heading{display:flex;align-items:center;justify-content:space-between;padding:19px 25px;border-bottom:1px solid var(--line)}.section-title{display:flex;align-items:center;gap:9px}h2{font-size:14px;font-weight:600;margin:0}.tiny-square{width:7px;height:7px;border:1px solid #718065;background:#eef1e8}.segmented{display:flex;background:#f4f5ef;padding:3px;border-radius:6px;gap:4px}.segmented button{font-size:10px;color:#8a9381;padding:6px 13px;border-radius:4px}.segmented .selected{background:#fff;color:#536449;box-shadow:0 1px 4px #25302210}.filters{display:flex;gap:18px;align-items:center;padding:17px 25px;font-size:10px;color:#91998a}.filters label{border-left:1px solid var(--line);padding-left:18px}.filters select{border:0;background:transparent;color:#66705e;font-size:10px;padding-left:8px}.filters button{color:#66705e;font-size:10px}.key-hint{margin-left:auto;font-size:9px;color:#b0b5a9}.quiz-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);padding:4px 25px 25px;gap:34px}.image-side{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fbfcf8;min-width:0}.image-top{display:flex;align-items:center;gap:12px;padding:13px 16px;font-size:10px;color:#a0a894}.image-top b{font-size:17px;font-weight:500;color:#56684a;margin-right:4px}.tag{background:#eef1e5;color:#869074;font-size:9px;border-radius:4px;padding:4px 8px}.image-top button{margin-left:auto;color:#78846d;font-size:21px;padding:0 3px}.image-stage{display:flex;align-items:center;justify-content:center;padding:0 18px 14px;height:330px}.image-stage img{max-width:100%;max-height:100%;object-fit:contain;border-radius:4px}.image-bottom{display:flex;justify-content:space-between;font-size:8px;color:#959e89;border-top:1px solid var(--line);padding:12px 15px;gap:7px}.image-bottom .status-dot{width:4px;height:4px}.answer-side{padding:12px 5px 0;display:flex;flex-direction:column}h3{font:600 25px 'Noto Serif SC',serif;margin:13px 0 7px}.answer-help{font-size:11px;color:#909787;margin:0 0 26px}form label{display:block;font-size:11px;color:#67765d;margin:0 0 9px}input:not([type=file]),textarea{width:100%;padding:13px 14px;background:#fff;border:1px solid #dce2d3;border-radius:6px;color:var(--ink);outline:none;transition:.2s}input:focus,textarea:focus{border-color:#8a9e79;box-shadow:0 0 0 3px #aab99620}input::placeholder,textarea::placeholder{color:#b4b9ad;font-size:12px}.input-tip{font-size:9px;color:#9da591;margin:9px 0 18px;line-height:1.7}.primary{background:var(--green);color:#fff;border-radius:6px;padding:13px 18px;font-size:12px;text-align:center}#submit-button{width:100%;display:flex;justify-content:space-between}.answer-actions{display:flex;justify-content:space-between;margin-top:15px;font-size:10px;color:#7c896d}.answer-actions button{padding:6px 0}.answer-actions .is-favorite{color:#9d7839}.observe-note{display:flex;gap:13px;align-items:center;background:#f6f7f1;border-radius:6px;padding:11px 15px;margin-top:23px;color:#929c80}.observe-note>span{font-size:22px}.observe-note p{font-size:10px;line-height:1.9;margin:0}.question-nav{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:#7f8d73;margin-top:auto;padding-top:18px}.question-nav button{padding:7px 0}.question-nav>span{font-size:9px;color:#abb2a2}.progress-track{height:3px;background:#eff2e8}#progress-bar{height:100%;background:#a3b68d;transition:width .3s}.below-panel{display:flex;justify-content:space-between;align-items:center;padding:22px 1px;color:#9ba28f;font-size:10px}.below-panel b{font-weight:400;margin-left:6px}.below-panel p{font-size:9px}footer{border-top:1px solid var(--line);padding:22px 0 6px;display:flex;justify-content:space-between;color:#a4ab9a;font-size:9px;letter-spacing:.4px}.footer-dot{margin:0 6px}.feedback{padding:12px;border-radius:6px;font-size:12px;background:#eff4e8;color:#47623b;margin-top:14px;line-height:1.7}.feedback.wrong{background:#fbf0e8;color:#966448}.feedback b{font-size:15px}.feedback small{display:block;font-size:10px;margin-top:4px}.empty{text-align:center;padding:65px 20px}.empty>span{font-size:52px;color:#9cad8a}.empty p{color:var(--muted);font-size:12px}.empty .primary{margin-top:16px}dialog{border:1px solid var(--line);border-radius:14px;box-shadow:0 25px 100px #1c2c2030;padding:30px;width:min(490px,92vw);color:var(--ink)}dialog::backdrop{background:#24312070;backdrop-filter:blur(4px)}.dialog-top{display:flex;justify-content:space-between;align-items:center}.dialog-top h2{font:600 23px 'Noto Serif SC',serif}.dialog-top button{font-size:26px;color:#8a9381}dialog form>p{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:24px}dialog form>.input-tip{font-size:10px}.dialog-actions{display:flex;justify-content:space-between;align-items:center;margin-top:20px;font-size:11px}#zoom-dialog{width:min(95vw,1200px);padding:30px;background:#f7f8f4}#zoom-image{max-height:85vh;max-width:100%;display:block;margin:auto}.close-zoom{position:absolute;right:6px;top:0;font-size:28px;background:#fff;border-radius:50%}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:13px 24px;background:#354733;color:#fff;border-radius:8px;box-shadow:0 6px 25px #26392030;z-index:5;font-size:12px}[hidden]{display:none!important}@media(min-width:1500px){.image-stage{height:390px}.answer-side{padding-top:26px}}@media(max-width:1150px){.sidebar{width:190px;padding:32px 16px}.shell{margin-left:190px}main{padding:30px 26px}header{padding:0 26px}.stats article{padding:0 18px}.stats article>div{gap:5px;flex-wrap:wrap}.quiz-grid{gap:23px}.image-stage{height:300px}.key-hint{display:none}.image-bottom{font-size:7px}.observe-note{margin-top:15px}.answer-help{margin-bottom:18px}.intro-art{margin-right:0}}@media(max-width:850px){.sidebar{width:78px;padding:25px 10px}.brand{justify-content:center}.brand>span:last-child,.side-label,.nav i,.side-bottom{display:none}.nav{font-size:0;justify-content:center;padding:14px 0}.nav>span{font-size:24px}nav{margin-top:45px}.shell{margin-left:78px}.quiz-grid{gap:24px;grid-template-columns:1fr}.image-stage{height:360px}.answer-side{padding:0}.observe-note{display:none}.question-nav{margin-top:8px}.stats small{display:none}.intro-art{display:none}.local-badge{display:none}.below-panel{display:block}.below-panel p{margin-left:20px}}@media(max-width:520px){.sidebar{inset:auto 0 0;width:100%;height:66px;border-right:0;border-top:1px solid var(--line);z-index:3;padding:5px 10px}.brand{display:none}nav{margin:0;display:flex;gap:7px}.nav{font-size:10px;gap:5px;padding:13px 3px;margin:0;flex:1}.nav>span{font-size:19px}.shell{margin:0 0 66px}header{height:54px;padding:0 20px}main{padding:23px 16px 14px}.intro{padding:4px 4px 22px}h1{font-size:28px;letter-spacing:0}.eyebrow{font-size:8px;letter-spacing:1.5px}.intro p{font-size:11px}.stats{padding:17px 0;margin-bottom:21px}.stats article{padding:0 12px}.stats article>span{font-size:9px}.stats b{font-size:23px}.panel-heading{padding:15px}.segmented button{padding:6px 9px}.filters{padding:13px 15px;gap:10px;font-size:9px}.filters label{padding-left:10px}.filters select{padding-left:0;max-width:85px}.filters button{font-size:9px}.quiz-grid{padding:0 14px 20px;gap:23px}.image-stage{height:285px;padding:0 12px 12px}.image-bottom{font-size:7px;padding:10px}.answer-side{padding:0 4px}h3{font-size:24px}.answer-help{margin-bottom:22px}footer{font-size:8px}.below-panel p{font-size:8px}.dialog-actions{gap:12px}}

.filters{flex-wrap:wrap}.answer-side .eyebrow{margin-top:2px}

.mobile-data-tools{display:none}@media(max-width:850px){.mobile-data-tools{display:flex;align-items:center;gap:15px;font-size:10px;color:#849275;padding:6px 0 20px}.mobile-data-tools span{margin-right:auto;color:#9ba48f}.mobile-data-tools button{padding:5px 0}}