:root{--bg:#000;--text:#EDEBE4;--sub:#8C8A84;--primary:#6AA6F8;--line:#1f1f1f;--panel:#0C1420}
@media (prefers-color-scheme: light){:root{--bg:#F5F1E6;--text:#1E1C18;--sub:#6E6A60;--primary:#3E7FD6;--line:#E2DACA;--panel:#fff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;line-height:1.85;-webkit-font-smoothing:antialiased}
main{max-width:720px;margin:0 auto;padding:40px 16px 80px}
header{display:flex;align-items:center;gap:10px;margin-bottom:28px}
header img{width:40px;height:40px;border-radius:10px}
header a{color:var(--text);text-decoration:none;font-weight:800;font-size:22px}
header a span{color:var(--primary)}
h1{font-size:26px;line-height:1.4;margin:0 0 8px}
h2{font-size:17px;margin:32px 0 6px}
p,li{font-size:15px}
.sub{color:var(--sub);font-size:13px}
a{color:var(--primary)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--sub);font-size:13px;display:flex;gap:16px;flex-wrap:wrap}