:root{--ink:#182a34;--muted:#647780;--line:#dfe6e7;--accent:#12695d;--soft:#edf5f1;--paper:#fff;--bg:#f5f7f6;--danger:#ab3939}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 ui-sans-serif,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer;min-height:40px;border:1px solid transparent;border-radius:8px;background:var(--accent);color:white;padding:8px 16px;font-weight:600}button:disabled{opacity:.45;cursor:default}button:hover:not(:disabled){filter:brightness(.95)}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #8fc9bd;outline-offset:2px}input,select,textarea{width:100%;border:1px solid #ccd8d8;background:#fff;color:var(--ink);padding:10px 12px;border-radius:7px;margin-top:6px;min-height:42px}textarea{resize:vertical;line-height:1.7}input[type=file]{padding:10px}input[type=checkbox]{width:16px;min-height:16px;margin:0 6px 0 0;accent-color:var(--accent)}select[multiple]{min-height:105px}label{display:block;margin:15px 0;font-weight:550}h1,h2,h3,p{margin-top:0}h1{font-size:30px;letter-spacing:-.8px;line-height:1.25;margin-bottom:8px}h2{font-size:18px;margin-bottom:8px}h3{font-size:14px}p{color:var(--muted)}hr{border:0;border-top:1px solid var(--line);margin:20px 0}.topbar{height:72px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 36px}.brand{font:700 31px Georgia,serif;color:var(--accent);text-decoration:none;letter-spacing:-1px}.brand span{font:550 15px ui-sans-serif,sans-serif;letter-spacing:0;color:var(--ink);margin-left:13px}.edition{font-size:12px;color:var(--muted)}.workspace{max-width:1480px;margin:auto;display:grid;grid-template-columns:205px minmax(0,1fr)}aside{padding:36px 20px;border-right:1px solid var(--line);min-height:calc(100vh - 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