*{box-sizing:border-box}
:root{--bg:#fbfbfd;--ink:#1b2330;--muted:#5b6b82;--line:#e5e9f0;--accent:#2f6df6;--code:#0f172a}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:860px;margin:0 auto;padding:0 22px}
header{border-bottom:1px solid var(--line);background:#fff}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:700;letter-spacing:.3px}
.nav a{color:var(--muted);font-size:15px;margin-left:20px}
.nav a.on{color:var(--ink);font-weight:600}
.hero{padding:56px 0 34px}
.hero h1{font-size:34px;line-height:1.3;margin:0 0 14px}
.hero p{color:var(--muted);margin:0;max-width:620px}
.tags{margin-top:18px;display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 11px;background:#fff}
section{padding:26px 0}
h2{font-size:20px;margin:0 0 16px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:12px}
.card h3{margin:0 0 6px;font-size:17px}
.card .meta{color:var(--muted);font-size:13px}
.card p{margin:8px 0 0;color:#3d4a5c;font-size:15px}
pre{background:var(--code);color:#dbe7ff;border-radius:10px;padding:14px 16px;overflow:auto;font-size:13.5px;line-height:1.6}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
p code,li code{background:#eef2f9;color:#26364d;padding:1px 5px;border-radius:4px;font-size:14px}
article h1{font-size:28px;margin:34px 0 8px}
article .meta{color:var(--muted);font-size:14px;margin-bottom:18px}
article p{color:#2c3849}
article h2{font-size:19px;margin:26px 0 10px}
article ul{color:#2c3849}
footer{border-top:1px solid var(--line);margin-top:40px;padding:22px 0 40px;color:var(--muted);font-size:13.5px}
footer .row{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer a{color:var(--muted)}
@media(max-width:640px){.hero h1{font-size:26px}.nav a{margin-left:12px;font-size:14px}}