.article-explorer {
  margin: 2rem 0;
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid #9ab7aa;
  border-radius: 16px;
  background: #f7faf8;
}

.article-explorer > h2 { margin-top: 0; }

.foundation-explorer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(220px, .8fr);
  gap: 1.25rem;
  align-items: center;
}

.foundation-explorer-stage {
  min-width: 0;
  overflow: hidden;
  padding: .35rem;
  border: 1px solid #6f9485;
  border-radius: 12px;
  background: #e5efea;
}

.foundation-explorer-svg {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
}

.foundation-explorer-controls {
  display: grid;
  min-width: 0;
  gap: .65rem;
}

.foundation-explorer-controls label {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  font-weight: 650;
}

.foundation-explorer-controls input[type="range"] {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  margin: -.4rem 0 .2rem;
  accent-color: #276a50;
}

.foundation-explorer-controls label span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.foundation-explorer-controls input[type="range"]:focus-visible {
  outline: 3px solid #1559a6;
  outline-offset: 3px;
}

.foundation-explorer-result {
  display: block;
  min-height: 52px;
  margin-top: 1rem;
  padding: .75rem 1rem;
  border-left: 5px solid #276a50;
  border-radius: 8px;
  background: #e4efe9;
  color: #102f27;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.foundation-explorer-result math {
  display: inline-block;
  max-width: 100%;
  margin: 0 .2rem;
  vertical-align: middle;
  overflow-x: auto;
  overflow-y: hidden;
}

.article-diagram-image {
  display: block;
  width: min(100%, 640px);
  height: auto;
  margin-inline: auto;
  border: 1px solid #6f9485;
  border-radius: 18px;
  background: #e5efea;
}

.article-math math {
  max-width: 100%;
  margin: 1.2rem auto;
  padding: .65rem 1rem;
  overflow-x: auto;
  overflow-y: hidden;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  line-height: 1.55;
}

.article-math--steps {
  display: grid;
  justify-items: center;
  gap: .7rem;
  margin: 1.2rem 0;
}

.article-math--steps math {
  margin: 0;
  padding-block: .15rem;
  overflow: visible;
}

.article-table { overflow-x: auto; margin: 1.25rem 0; }
.article-table table { width: 100%; border-collapse: collapse; }
.article-table th, .article-table td { min-width: 70px; padding: .75rem; text-align: center; vertical-align: middle; border: 1px solid #9ab7aa; }

@media (max-width: 700px) {
  .foundation-explorer-layout { grid-template-columns: 1fr; }
  .foundation-explorer-svg { aspect-ratio: 2 / 1; }
}

@media (max-width: 420px) {
  .article-explorer { padding: .8rem; }
  .foundation-explorer-result { font-size: .95rem; }
  .foundation-explorer-controls label { align-items: flex-start; }
  .article-math math { padding-inline: .25rem; font-size: 1rem; }
}

.dark .article-explorer { background: #10251f; border-color: #4f7667; }
.dark .foundation-explorer-stage { background: #132f27; border-color: #668f7f; }
.dark .foundation-explorer-result { background: #173f34; color: #f4f8f6; }
.dark .foundation-explorer-svg { filter: brightness(.78) contrast(1.18); }
.dark .article-diagram-image { background: #132f27; border-color: #668f7f; filter: brightness(.78) contrast(1.18); }
.dark .article-table th,
.dark .article-table td { border-color: #4f7667; }