:root{--bg:#fff;--surface:#fafaf9;--ink:#1c1917;--muted:#78716c;--accent:#2563eb;--accent-ink:#fff;--border:#e7e5e4;--radius:10px;--maxw:72rem;--narrow:44rem;--header-h:88px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:1rem;line-height:1.6}h1,h2,h3{letter-spacing:-.01em;margin:0;line-height:1.2}h1{font-size:clamp(2.25rem,5vw,3.5rem);font-weight:700}h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:650}h3{font-size:1.125rem;font-weight:600}p{margin:0}ul,ol{margin:0;padding:0;list-style:none}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2px solid 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