:root { --ink:#1f2733; --muted:#5b6b7c; --line:#e3e8ee; --bg:#f7f9fb; --card:#ffffff; --accent:#2f6fed; }
* { box-sizing:border-box; margin:0; padding:0; }
body { font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif; color:var(--ink); background:var(--bg); line-height:1.75; }
.wrap { max-width:720px; margin:0 auto; padding:24px 20px 48px; }
header.site { padding:12px 0 20px; }
header.site h1 { font-size:28px; letter-spacing:1px; }
header.site .sub { color:var(--muted); font-size:15px; margin-top:4px; }
nav.top { font-size:14px; margin-bottom:24px; }
nav.top a { color:var(--muted); text-decoration:none; margin-right:16px; }
nav.top a:hover { color:var(--accent); }
section { margin-bottom:28px; }
h2 { font-size:18px; margin-bottom:12px; }
p { margin-bottom:10px; }
ul.plain { list-style:none; }
.cards { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:12px; }
.card { background:var(--card); border:1px solid var(--line); border-radius:10px; padding:16px; }
.card h3 { font-size:15px; margin-bottom:6px; }
.card p { font-size:13px; color:var(--muted); margin:0; }
.card .tag { display:inline-block; margin-top:8px; font-size:12px; color:#8a6d1a; background:#fdf3d7; border-radius:4px; padding:1px 8px; }
.note { font-size:13px; color:var(--muted); margin-top:10px; }
.legal { font-size:14px; color:var(--ink); }
.legal h3 { font-size:15px; margin:16px 0 6px; }
footer.site { border-top:1px solid var(--line); margin-top:32px; padding-top:16px; font-size:13px; color:var(--muted); text-align:center; }
footer.site a { color:var(--muted); }
a.back { display:inline-block; font-size:14px; color:var(--accent); text-decoration:none; margin-bottom:18px; }