:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#fff;--ink:#111;--muted:#686868;--line:#e6e6e6;--line-strong:#b8b8b8;--panel:#fff;--accent:#111;--accent-ink:#fff;--warn:#8f3a10;--danger:#dc2626;--danger-hover:#b91c1c;--surface:#f7f7f7}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,Arial,Helvetica,sans-serif;font-size:15px;line-height:1.5}a{color:inherit}button,input,select,textarea{font:inherit}.shell{grid-template-columns:260px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--line);background:#fff;height:100vh;padding:42px 30px;position:sticky;top:0}.sidebar-credit{color:var(--muted);margin:0;font-size:12px;position:absolute;bottom:30px}.sidebar-credit a{color:var(--ink);text-underline-offset:3px;text-decoration-thickness:1px}.brand{border-bottom:1px solid var(--ink);letter-spacing:0;text-transform:uppercase;margin:0 0 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var(--line);height:auto;position:static}.sidebar-credit{margin-top:32px;position:static}.main{padding:28px 22px}.topbar,.grid,.landing-hero{grid-template-columns:1fr;display:grid}.landing-hero h1{font-size:36px;line-height:1.08}.landing-hero p:not(.eyebrow){font-size:17px}.brief-section,.item-body dl div,.topics-layout,.feedback-controls{grid-template-columns:1fr}.feedback-actions{justify-content:flex-start}.brief-section{gap:22px}}