body{font:16px/1.6 -apple-system,Segoe UI,Roboto,sans-serif;max-width:760px;margin:0 auto;padding:0 16px;color:#1f2328}
header{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:1px solid #e5e7eb}
.logo{font-weight:700;text-decoration:none;color:#1f2328}.logo span{color:#2563eb}nav a{margin-left:16px;color:#57606a;text-decoration:none}
a{color:#2563eb}time{color:#8b949e;font-size:14px;margin-left:8px}footer{margin:48px 0 24px;color:#8b949e;font-size:14px}
pre{background:#f6f8fa;padding:12px;overflow:auto;border-radius:6px}