* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, sans-serif; color: #1a1a1a; background: #f4f6f8; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.site-header { background: #0b215a; color: #fff; padding: 12px 0; }
.site-header a { color: #fff; text-decoration: none; margin-right: 16px; }
.site-header a.active { text-decoration: underline; }
.logo { font-weight: 700; font-size: 1.2rem; margin-right: 24px; }
.content { background: #fff; margin: 24px auto; padding: 24px; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.page-body img { max-width: 100%; height: auto; }
.site-footer { padding: 24px 0; color: #666; font-size: .9rem; }