:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink:#252a2d;--muted:#65717a;--accent:#506cab;--body-size:1.1875rem}*{box-sizing:border-box}body{color:var(--ink);font-family:Arial,Microsoft JhengHei,sans-serif;font-size:var(--body-size);background:#fff;margin:0;line-height:1.9}main{width:min(100% - 3rem,72rem);margin:6rem auto}h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.3}a{color:var(--accent);text-underline-offset:.25em}:focus-visible{outline:2px solid var(--accent);outline-offset:4px}@media (max-width:640px){:root{--body-size:1.0625rem}main{margin:3rem auto}}