.header-x-link {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--lime);
  border-radius: 999px;
  background: var(--lime);
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.14em;
  line-height: 1;
  transition: transform 0.16s, box-shadow 0.16s;
}

.header-x-link:hover,
.header-x-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px #ccff0026;
}

.footer-meta {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  white-space: nowrap;
}

.footer-meta a {
  color: var(--graphite);
  transition: color 0.16s;
}

.footer-meta a:hover,
.footer-meta a:focus-visible {
  color: var(--lime);
}

@media (max-width: 720px) {
  .site-header {
    z-index: 50;
  }

  .header-x-link {
    width: 40px;
    min-height: 40px;
    padding: 0;
    flex: 0 0 40px;
  }

  .header-x-label {
    display: none;
  }

  .mobile-menu summary {
    min-height: 40px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    justify-content: center;
  }

  .mobile-menu[open] summary {
    border-color: var(--lime);
    color: var(--lime);
  }

  .mobile-menu[open] nav {
    position: fixed;
    z-index: 49;
    top: 62px;
    right: 0;
    left: 0;
    width: 100vw;
    min-width: 0;
    max-height: calc(100svh - 62px);
    padding: 10px 18px 18px;
    overflow-y: auto;
    border: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: var(--header-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    box-shadow: 0 24px 60px #0009;
  }

  .mobile-menu nav a {
    min-height: 58px;
    padding: 0 4px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--soft-line);
    font-size: 13px;
    letter-spacing: 0.16em;
  }

  .mobile-menu nav a:last-child,
  .mobile-menu nav .mobile-menu-x {
    min-height: 54px;
    margin-top: 12px;
    padding: 0 16px;
    border: 1px solid var(--lime);
    border-radius: 999px;
    background: var(--lime);
    color: var(--ink);
    justify-content: center;
  }

  .footer-meta {
    align-items: flex-end;
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 380px) {
  .header-actions {
    gap: 6px;
  }

  .theme-toggle {
    width: 40px;
    padding: 0;
  }

  .theme-toggle [data-theme-label] {
    display: none;
  }

  .mobile-menu summary {
    width: 48px;
    padding: 0;
    font-size: 10px;
  }
}