.site-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(0,0,0,.08);
  font-size: 13px;
}
.site-banner--dev {
  background: #fff6d6;            /* мягкий жёлтый */
  color: #4a3b00;
}
.site-banner--dev a { color: inherit; text-decoration: underline; }
.site-banner__inner { padding-right: 8px; }
.site-banner__close {
  appearance: none;
  border: 0;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  color: inherit;
  opacity: .6;
}
.site-banner__close:hover { opacity: 1; }
@media (prefers-color-scheme: dark) {
  .site-banner--dev {
    background: #3b3420;
    color: #ffe9a6;
    border-bottom-color: rgba(255,255,255,.1);
  }
}