*{box-sizing:border-box}:root{font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#21364d;background:#f4f7fb;--blue:#174ea6;--red:#d53948;--line:#dce5ef}body{margin:0}button,a,input{font:inherit}button{cursor:pointer;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:8px 14px;background:white;color:var(--blue)}a{color:var(--blue)}button:hover{background:#eef5ff}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #df9b21;outline-offset:3px}[hidden]{display:none!important}.review-banner{background:#e6edf7;color:#536b86;padding:6px 24px;font-size:11px;letter-spacing:.04em}.manual-top{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:18px;background:white;border-bottom:1px solid var(--line);padding:13px 24px}.brand img{display:block;width:128px;height:auto}.manual-name{flex:1;font-size:14px;font-weight:600}.app-link{font-size:13px;font-weight:600;text-decoration:none;padding:9px 13px;border:1px solid var(--line);border-radius:9px}#menu{display:none}.manual-layout{display:grid;grid-template-columns:260px minmax(0,1fr);max-width:1600px;margin:auto}aside{padding:24px 18px;background:white;border-right:1px solid var(--line);height:calc(100vh - 104px);position:sticky;top:76px;overflow:auto}.eyebrow{font-size:10px;font-weight:700;letter-spacing:.1em;color:#7389a1;margin:0 0 8px}aside h2{font-size:17px;line-height:1.4;margin:0 0 18px}#chapters{display:grid;gap:5px}#chapters a{display:flex;align-items:center;gap:10px;text-decoration:none;color:#526880;font-size:13px;padding:10px;border-radius:8px;min-height:44px}#chapters a span{font-size:11px;min-width:25px;color:#7b91aa}#chapters a[aria-current=page]{background:#e9f1fe;color:var(--blue);font-weight:650}#chapters a[aria-current=page] span{color:var(--blue)}.sidebar-note{padding:14px;background:#f5f8fc;border-radius:10px;font-size:12px;margin-top:22px}.sidebar-note p{margin:4px 0}.lesson{max-width:1050px;padding:34px 42px 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@page{size:A4;margin:14mm 13mm 17mm}
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@page{margin:12mm 13mm 16mm}
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