:root{color-scheme:light dark;--fg:#1a1a1a;--bg:#fff;--muted:#5c5c5c;--line:#d9d9d9;--link:#0b57d0;--note:#fff4d6;--soft:#f5f5f5}
@media (prefers-color-scheme:dark){:root{--fg:#e8e8e8;--bg:#121212;--muted:#a3a3a3;--line:#3a3a3a;--link:#8ab4f8;--note:#3d3200;--soft:#1e1e1e}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0 auto;max-width:46rem;padding:1rem 1rem 3rem;font:1rem/1.7 system-ui,-apple-system,"Segoe UI","PingFang TC","Microsoft JhengHei","Noto Sans TC",sans-serif;color:var(--fg);background:var(--bg);overflow-wrap:break-word}
a{color:var(--link)}
nav{display:flex;flex-wrap:wrap;gap:.25rem 1rem;align-items:baseline;padding-bottom:.75rem;border-bottom:1px solid var(--line);font-size:.9375rem}
nav .brand{font-weight:700;color:var(--fg);text-decoration:none;margin-right:auto}
h1{font-size:1.75rem;line-height:1.3;margin:1.5rem 0 1rem}
h2{font-size:1.25rem;line-height:1.4;margin:2rem 0 .5rem}
h3{font-size:1.0625rem;margin:1.5rem 0 .5rem}
ul,ol{padding-left:1.5rem}
li{margin:.25rem 0}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}
code{font-family:ui-monospace,Consolas,monospace;font-size:.9em;background:var(--soft);padding:.1em .3em;border-radius:.25rem}
blockquote{margin:1rem 0;padding:.5rem 1rem;background:var(--note);border-left:.25rem solid #e0a800;border-radius:.25rem}
blockquote p{margin:0}
.table{overflow-x:auto;margin:1rem 0}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.9375rem;line-height:1.5}
th,td{border:1px solid var(--line);padding:.5rem .625rem;text-align:left;vertical-align:top}
th{background:var(--soft)}
section[lang]{margin-top:3rem;padding-top:1rem;border-top:1px solid var(--line)}