:root{--background:#fff;--surface:#fff;--surface-muted:#eee;--surface-soft:#f3f3f4;--text:#1a1c1c;--text-muted:#6b6f70;--text-soft:#8a8d8e;--border:#dedede;--border-strong:#c4c7c7;--primary:#000;--shadow-soft:0 18px 50px #0000000f;--container:min(100% - 40px, 1200px)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--background);color:var(--text);text-rendering:geometricprecision;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif}a{color:inherit;text-decoration:none}.site-header{z-index:20;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffffe0;border-bottom:1px solid #dededeb8;grid-template-columns:1fr auto 1fr;align-items:center;width:100%;height:72px;padding:0 max(20px,50vw - 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