:root{--brand:#4f46e5;--brand2:#7c3aed;--brand-dark:#3730a3;--bg:#f7f8fc;--text:#111827;--muted:#64748b;--border:#e5e7eb;--card:#fff;--shadow:0 18px 50px rgba(15,23,42,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 32px));margin:auto}header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(229,231,235,.8)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.02em}.logo{width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:grid;place-items:center;box-shadow:0 8px 22px 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