:root{--paper:#f6f5f0;--surface:#fff;--ink:#252720;--muted:#686b61;--line:#e1e3d9;--accent:#c74624;--accent-soft:#fff2ec;--warning:#78510b;--warning-soft:#fff6df;--radius:12px}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);-webkit-font-smoothing:antialiased;margin:0;font-family:Arial,Helvetica,sans-serif;font-size:14px}button,input,select{font:inherit}button,summary,input[type=checkbox],a{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button{color:inherit}a{color:inherit;text-decoration:none}button:focus-visible,input:focus-visible,summary:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:3px}input[type=checkbox]{accent-color:var(--accent);cursor:pointer;flex-shrink:0;width:15px;height:15px;margin:0}h1,h2,h3,p{margin:0}.app-shell{max-width:1900px;margin:0 auto;padding:0 32px}.site-header{border-bottom:1px solid 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