:root{--bg:#2b2d31;--bar:#25272b;--fg:#a8aab0;--strong:#d0d2d8;--line:#3a3c42}
:root[data-theme="light"]{--bg:#ffffff;--bar:#f3f3f4;--fg:#555555;--strong:#111111;--line:#dddddd}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font:18px/1.7 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header{background:var(--bar)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{color:var(--strong);font-weight:600;text-decoration:none}
nav{display:flex;align-items:center;gap:18px}
nav a{color:var(--fg);text-decoration:none;font-size:20px}
nav a:hover{color:var(--strong)}
#theme{background:none;border:0;border-left:1px solid var(--line);padding-left:18px;color:var(--strong);font-size:22px;cursor:pointer}
main{padding-top:72px;padding-bottom:80px}
p,ul{margin-bottom:18px}
a{color:var(--strong)}
.links a{font-weight:700;margin-right:14px}
h2{color:var(--fg);font-size:26px;margin:32px 0 14px;scroll-margin-top:20px}
ul{padding-left:28px}
li{margin-bottom:4px}
li a{font-weight:700}
@media(max-width:600px){body{font-size:16px}main{padding-top:40px}}