:root{--green:#214f43;--ink:#263d36;--muted:#7e8982;--line:#e4e7df;--paper:#f6f7f2;--white:#fff;--gold:#b78843}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px}button,input,select,textarea{font:inherit}button,a,select{touch-action:manipulation}button,a{cursor:pointer}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button{border:0;background:none;color:inherit}button:focus-visible,a:focus-visible{outline:3px solid #b99554;outline-offset:4px}aside{position:fixed;inset:0 auto 0 0;width:234px;background:#fafbf7;border-right:1px solid var(--line);padding:34px 22px;display:flex;flex-direction:column}.brand{display:flex;gap:13px;align-items:center;padding:0 10px;margin-bottom:53px}.brand b{font:27px Georgia,"Songti SC",serif;letter-spacing:3px}.brand small{display:block;font:10px 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#14281f44;color:var(--ink)}dialog::backdrop{background:#14281f70;backdrop-filter:blur(3px)}#lesson-body{padding:33px}.modal-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.close{font-size:26px;color:var(--muted)}.lesson-content{line-height:1.95}.lesson-content h3{margin-top:25px}.lesson-content li{margin-bottom:9px}.lesson-content a{text-decoration:underline}.poem-text{font:21px/2.1 "Songti SC",serif;white-space:pre-line;background:#f6f7ef;padding:23px;border-radius:7px}.lesson-content textarea{width:100%;min-height:100px;border:1px solid var(--line);border-radius:5px;padding:13px;margin:12px 0}.check-row{display:flex;gap:15px;flex-wrap:wrap;margin-top:15px}.check-row label{padding:10px;background:#edf1e8;border-radius:4px;font-size:12px}.answer{padding:16px;background:#eef2e9;margin:12px 0;border-radius:5px}.practice{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.practice label{display:block;padding:12px;border:1px solid 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var(--line);flex-direction:row;align-items:center;justify-content:space-between}.brand{margin:0;padding:0;gap:7px}.brand b{font-size:20px}.brand small,.side-label,.aside-note,.edition{display:none}.seal{font-size:20px;padding:4px 7px}nav{display:flex;gap:1px}nav a{padding:9px;font-size:11px;display:block}nav a span{display:none}.shell{margin-left:0}header{height:48px;padding:0 20px}.header-right{font-size:10px}.avatar{display:none}main{padding:25px 18px}.intro{align-items:start}.date-pill{display:none}h1{font-size:27px}.hero{padding:27px 24px;min-height:230px}.hero-content{max-width:91%}.hero h2{font-size:24px}.hero-art{opacity:.6;right:-50px}.stats{grid-template-columns:repeat(2,1fr)}.grid,.two-col{grid-template-columns:1fr}.tabs button{padding:13px 12px}.list-row{padding:18px;gap:12px;flex-wrap:wrap}.list-row .body{min-width:180px}.year{font-size:24px;min-width:55px}footer{padding:20px;display:block;line-height:1.8}footer span{display:block}#lesson-body{padding:22px}.poem-text{font-size:18px}.header-right{display:none}}
.modal-top{position:sticky;top:-1px;background:#fff;z-index:2;padding:10px 0;border-bottom:1px solid var(--line)}