:root{--bg:#05121e;--bg2:#092338;--panel:#0d2b41;--text:#f4f8fb;--muted:#b2c4d1;--a:#55d4ff;--b:#7ef0b8;--line:rgba(149,214,240,.18);--r:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--text);background:radial-gradient(circle at 10% 5%,rgba(52,151,197,.24),transparent 28%),linear-gradient(145deg,var(--bg),var(--bg2));line-height:1.6}a{color:inherit}.page-shell{width:min(1160px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(5,18,30,.85);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:850}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;color:#041522;background:linear-gradient(135deg,var(--a),var(--b))}.nav-links{display:flex;gap:17px}.nav-links 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