:root{--surface:#fff;--bg:#f3f5f9;--ink:#172640;--muted:#657189;--line:#e1e6ef;--wash:#edf2fd;--blue:#2057d4;--green:#167749;--red:#b42a40;--orange:#9b610c;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,Segoe UI,Arial,sans-serif;font-size:16px;line-height:1.55}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}a{color:var(--blue)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #81a9ff;outline-offset:3px}h1,h2,h3,p{margin:0}h1{font-size:32px;letter-spacing:-1px;line-height:1.2}h2{font-size:21px;letter-spacing:-.35px}h3{font-size:17px}p{color:var(--muted)}.shell{display:grid;grid-template-columns:238px 1fr;min-height:100vh}.sidebar{background:#102440;color:#fff;position:sticky;top:0;height:100vh;padding:34px 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