/* Shared navigation for Codex, Claude Code and image guides. */
nav.site-nav {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  width: 100%;
  max-width: 940px;
  margin: 0 auto 18px;
  padding: 10px 12px;
  border: 1px solid rgba(29, 35, 43, .14);
  border-radius: 18px;
  background: rgba(255, 251, 243, .82);
  backdrop-filter: blur(12px);
  font: 16px/1.4 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
nav.site-nav .nav-brand {
  padding: 0 6px;
  color: #1d232b;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -.02em;
  text-decoration: none;
  white-space: nowrap;
}
nav.site-nav .nav-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
nav.site-nav .nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: #5e676f;
  font: 700 14px/22px "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  text-decoration: none;
  white-space: nowrap;
}
nav.site-nav .nav-links a:hover { background: #f2e5d5; color: #8f3716; }
nav.site-nav .nav-links a[aria-current="page"] {
  color: #fff;
  background: linear-gradient(135deg, #c65a2e, #8f3716);
}
nav.site-nav a:focus-visible { outline: 3px solid #c65a2e; outline-offset: 3px; }
@media (max-width: 560px) {
  nav.site-nav { align-items: flex-start; }
  nav.site-nav .nav-links { width: 100%; gap: 6px; }
  nav.site-nav .nav-links a { padding: 8px 10px; }
}