/* ---------- Tag filter buttons (reuse .toc-tabs shell, button variant) ---------- */
.tag-btn {
  flex: none;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-dim);
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 7px 18px;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s;
}

.tag-btn:hover { color: var(--ink); border-color: var(--amber); }

.tag-btn.on {
  color: #17110a;
  background: linear-gradient(120deg, var(--amber), var(--amber-deep));
  border-color: transparent;
}

#posts { padding-top: 44px; }