:root{--ink:#ecf4ff;--muted:#9baec5;--bg:#07111f;--panel:#0d1b2d;--line:#20354d;--aqua:#4fe1c1;--blue:#64a8ff;--max:1120px;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 75% 5%,#123759 0,transparent 30%),var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}.shell{width:min(calc(100% - 40px),var(--max));margin-inline:auto}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px;font-weight:750;letter-spacing:.2px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--aqua),var(--blue));color:#04131d;font-weight:900}.nav nav{display:flex;gap:28px;color:var(--muted);font-size:14px}.nav nav a:hover,.footer 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