:root{--bg:#F3F4F6;--card:#FFFFFF;--ink:#111827;--sub:#4B5563;--line:#E5E7EB;--me:#2563EB;--partner:#F26B3A;--link:#1D4ED8}
@media (prefers-color-scheme:dark){:root{--bg:#0B0F17;--card:#161B26;--ink:#F3F4F6;--sub:#9CA3AF;--line:#262D3B;--me:#4F8BFF;--partner:#FF8A5C;--link:#8AB4FF}}
*{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}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--ink);text-decoration:none}
.brand i{display:inline-block;width:12px;height:12px;border-radius:50%;background:var(--me);box-shadow:8px 0 0 var(--partner);margin-right:8px}
h1{font-size:30px;line-height:1.25;margin:.6em 0 .3em;font-weight:800}
h2{font-size:20px;margin:2em 0 .4em;padding-left:10px;border-left:4px solid var(--me)}
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:16px;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}