:root{--bg:#f6f7f9;--panel:#ffffff;--ink:#17191f;--muted:#606778;--line:#d9dee8;--accent:#0b7a75;--accent-2:#2458d3;--accent-3:#c45f2f;--soft:#e9f5f3;--code:#10141c;--shadow:0 16px 45px rgba(23,25,31,0.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit}button,input,select,textarea{font:inherit}.site-shell{min-height:100vh}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;gap:24px;padding:14px clamp(18px,4vw,56px);background:rgba(246,247,249,.92);border-bottom:1px solid 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