.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  max-width: 1120px;
  margin: 12px auto 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.site-header .brand img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
}

.site-header nav {
  display: flex;
  gap: 18px;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  transition: color .15s ease;
}

.site-header nav a:hover,
.site-header nav a.active {
  color: var(--text);
}

.site-header .brand,
.site-header nav a,
.site-footer a {
  outline-offset: 3px;
}

.seo-text {
  max-width: 900px;
  margin: 44px auto 0;
  padding: 10px 0 0;
  color: var(--muted);
}

.seo-text h2 {
  color: var(--text);
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.15;
  margin: 0 0 14px;
}

.seo-text h3 {
  color: var(--text);
  font-size: 16px;
  margin: 24px 0 8px;
}

.seo-text p {
  margin: 0 0 12px;
  line-height: 1.6;
}

.seo-text ul {
  margin: 0 0 12px;
  padding-left: 20px;
  line-height: 1.6;
}

.site-footer {
  max-width: 1120px;
  margin: 40px auto 0;
  padding: 20px 20px 0;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
}

.site-footer a {
  color: var(--text);
  text-decoration: none;
  transition: color .15s ease;
}

.site-footer a:hover {
  color: var(--text);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 720px) {
  .site-header {
    top: 8px;
    margin: 8px auto 14px;
    padding: 12px 14px;
  }

  .site-header nav {
    width: 100%;
    gap: 8px 12px;
    flex-wrap: wrap;
    overflow-x: clip;
    padding-bottom: 0;
  }

  .site-header nav a {
    font-size: 11px;
  }

  .seo-text {
    margin-top: 34px;
  }
}