:root{
  --bg:#fdfdfc; --fg:#1b1c1e; --muted:#6b6f76; --line:#e6e6e3; --accent:#2f6f4e;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#16181a; --fg:#e8e8e4; --muted:#9aa0a6; --line:#2a2d31; --accent:#6fbf94; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; padding:0 24px;
  background:var(--bg); color:var(--fg);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC",
       "PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
main,header,footer{max-width:720px;margin:0 auto}
.site-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:28px 0 16px;border-bottom:1px solid var(--line);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--fg);text-decoration:none;font-weight:600;letter-spacing:.2px;
}
.brand svg{color:var(--accent)}
nav a{color:var(--muted);text-decoration:none;margin-left:20px;font-size:14px}
nav a:hover{color:var(--fg)}
.hero{padding:56px 0 40px}
.hero h1{font-size:clamp(28px,5vw,38px);line-height:1.3;margin:0 0 16px;letter-spacing:-.5px}
.lead{margin:0 0 14px;color:var(--fg);opacity:.9}
.meta{margin:0;color:var(--muted);font-size:14px}
section{padding:8px 0 32px}
h2{font-size:15px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);
   font-weight:600;margin:32px 0 16px}
.list{list-style:none;padding:0;margin:0}
.list li{
  display:flex;gap:18px;align-items:baseline;
  padding:14px 0;border-bottom:1px solid var(--line);
}
.date{flex:0 0 84px;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.list a{color:var(--fg);text-decoration:none;border-bottom:1px solid transparent}
.list a:hover{border-bottom-color:var(--accent)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.card{border:1px solid var(--line);border-radius:10px;padding:16px 18px}
.card h3{margin:0 0 6px;font-size:15px}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
#about p{color:var(--fg);opacity:.9}
.site-footer{
  padding:28px 0 48px;border-top:1px solid var(--line);
  color:var(--muted);font-size:13px;
}
.centered{min-height:60vh;display:flex;flex-direction:column;justify-content:center}
.centered h1{font-size:56px;margin:0 0 8px;letter-spacing:-2px}
.centered p{color:var(--muted);margin:0 0 24px}
.centered a{color:var(--accent);text-decoration:none}