body { max-width: 720px; margin: 0 auto; padding: 0 20px; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.8; color: #222; }
header { display: flex; justify-content: space-between; align-items: baseline; padding: 24px 0 12px; border-bottom: 1px solid #e5e5e5; }
.brand { font-size: 20px; font-weight: bold; color: #222; text-decoration: none; }
nav a { margin-left: 16px; color: #555; text-decoration: none; }
nav a:hover { color: #000; }
main { padding: 24px 0; }
h1 { font-size: 26px; }
h2 { font-size: 19px; margin-top: 28px; }
a { color: #2563eb; }
.posts { list-style: none; padding: 0; }
.posts li { padding: 6px 0; }
.posts span { color: #888; margin-right: 12px; font-size: 14px; }
footer { border-top: 1px solid #e5e5e5; padding: 16px 0 32px; color: #888; font-size: 14px; }
time { color: #888; font-size: 14px; }