:root{--bg:#E7EAEE;--card:#FFFFFF;--ink:#0E1A2B;--sub:#4A5568;--line:#C9CED6;--signal:#FFC400;--link:#0B5CAD}
@media (prefers-color-scheme:dark){:root{--bg:#0E1A2B;--card:#16243A;--ink:#F2F4F7;--sub:#A9B3C1;--line:#2B3A52;--signal:#FFC400;--link:#7FB8FF}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 -apple-system,BlinkMacSystemFont,"Hiragino Sans","Apple SD Gothic Neo",system-ui,sans-serif;overflow-wrap:break-word;line-break:strict;word-break:auto-phrase}
main{max-width:720px;margin:0 auto;padding:40px 16px 80px}
.sign{display:inline-block;background:var(--ink);color:#fff;border-left:8px solid var(--signal);border-radius:10px;padding:6px 14px;font-weight:800;text-decoration:none}
@media (prefers-color-scheme:dark){.sign{background:#F2F4F7;color:#0E1A2B}}
h1{font-size:30px;line-height:1.2;margin:.6em 0 .3em;font-weight:800}
h2{font-size:20px;margin:2em 0 .4em;padding-left:10px;border-left:4px solid var(--signal)}
a{color:var(--link)}
.meta{color:var(--sub);font-size:15px}
.lang a{margin-right:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:16px 0}
.card h2{margin-top:0}
hr{border:0;border-top:1px solid var(--line);margin:56px 0}
ul{padding-left:1.2em}li{margin:.3em 0}
footer{color:var(--sub);font-size:14px;text-align:center;margin-top:48px}