:root{--ink:#111418;--ink-soft:#4b5563;--ink-faint:#9ca3af;--bg:#ffffff;--bg-soft:#f6f7f9;--line:#e5e7eb;--accent:#1d4ed8;--accent-dark:#1e40af;--accent-soft:#eff4ff;--radius:12px;--maxw:1080px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.nav-inner{justify-content:space-between;height:64px}.nav-inner,.wordmark{display:flex;align-items:center}.wordmark{gap:10px;font-weight:800;font-size:17px;letter-spacing:-.02em;color:var(--ink);text-decoration:none}.logo-mark{width:28px;height:28px;flex-shrink:0;display:block}.wordmark 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