:root{--bg:#F8F7F4;--surface:#FFFFFF;--text:#1F2937;--muted:#5B6472;--accent:#2563EB;--border:#E5E3DD}
@media (prefers-color-scheme:dark){:root{--bg:#0F1521;--surface:#1A2232;--text:#E5E7EB;--muted:#9CA3AF;--accent:#60A5FA;--border:#243047}}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65;-webkit-text-size-adjust:100%}
header,main,footer{max-width:820px;margin:0 auto;padding:0 20px}
header{padding-top:28px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{font-weight:700;font-size:20px;color:var(--text);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:15px}
nav a:first-child{margin-left:0}
nav a[aria-current]{color:var(--accent);font-weight:600}
main{padding-top:12px;padding-bottom:40px}
h1{font-size:32px;line-height:1.2;margin:28px 0 6px}
h2{font-size:21px;margin:36px 0 10px}
h3{font-size:17px;margin:22px 0 6px}
p,li{font-size:16px}
ul{padding-left:22px}
li{margin-bottom:6px}
a{color:var(--accent)}
.updated{color:var(--muted);margin-top:0}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px 20px;margin:18px 0}
.card p:first-child{margin-top:0}.card p:last-child{margin-bottom:0}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:10px;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:600}
.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:4px 10px}
details{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 18px;margin:10px 0}
summary{cursor:pointer;font-weight:600}
details p{margin-bottom:0}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;font-weight:600;padding:12px 20px;border-radius:12px}
footer{border-top:1px solid var(--border);padding-top:18px;padding-bottom:32px;color:var(--muted);font-size:14px}
footer a{color:var(--muted)}