.overview-hero {
  background:
    linear-gradient(135deg, rgba(243, 250, 247, 0.96), rgba(247, 249, 248, 0.84)),
    linear-gradient(90deg, var(--aniot-line) 1px, transparent 1px),
    linear-gradient(180deg, var(--aniot-line) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  border-bottom: 1px solid var(--aniot-border);
  padding: 4rem 0 3rem;
}

.hero-title {
  color: var(--aniot-text);
  font-weight: 750;
  letter-spacing: 0;
  line-height: 1.12;
  margin-bottom: 1rem;
  text-wrap: balance;
}

.hero-description {
  color: var(--aniot-text-soft);
  font-size: 1.08rem;
  margin-bottom: 1.5rem;
  max-width: 46rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-panel {
  padding: 1.25rem;
}

.hero-panel-title {
  color: var(--aniot-secondary);
  font-weight: 700;
  margin-bottom: 1rem;
}

.value-loop-diagram {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.value-loop-diagram li {
  align-items: center;
  background: var(--aniot-surface);
  border: 1px solid var(--aniot-border);
  border-radius: 8px;
  display: flex;
  gap: 0.75rem;
  min-height: 3.35rem;
  padding: 0.7rem 0.85rem;
  position: relative;
}

.value-loop-diagram li:not(:last-child)::after {
  background: var(--aniot-secondary);
  bottom: -0.56rem;
  content: "";
  height: 0.42rem;
  left: 1.7rem;
  opacity: 0.45;
  position: absolute;
  width: 1px;
}

.loop-node-icon {
  align-items: center;
  background: var(--aniot-soft);
  border: 1px solid var(--aniot-subtle-border);
  border-radius: 999px;
  color: var(--aniot-primary-dark);
  display: inline-flex;
  flex: 0 0 2rem;
  height: 2rem;
  justify-content: center;
  width: 2rem;
}

.loop-node-icon svg,
.participant-icon svg {
  display: block;
  fill: none;
  height: 1.15rem;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  width: 1.15rem;
}

.loop-return {
  align-items: center;
  background: var(--aniot-soft);
  border: 1px dashed var(--aniot-jade-300);
  border-radius: 999px;
  color: var(--aniot-primary-dark);
  display: flex;
  font-size: 0.88rem;
  font-weight: 700;
  justify-content: center;
  margin-top: 0.8rem;
  padding: 0.45rem 0.75rem;
  text-align: center;
}

.compact-loop {
  counter-reset: loop-step;
  display: grid;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.compact-loop li {
  align-items: center;
  background: var(--aniot-soft);
  border: 1px solid var(--aniot-subtle-border);
  border-radius: 8px;
  display: flex;
  gap: 0.75rem;
  min-height: 3rem;
  padding: 0.65rem 0.8rem;
}

.compact-loop li::before {
  align-items: center;
  background: var(--aniot-primary);
  border-radius: 999px;
  color: #ffffff;
  content: counter(loop-step);
  counter-increment: loop-step;
  display: inline-flex;
  flex: 0 0 1.7rem;
  font-size: 0.85rem;
  font-weight: 700;
  height: 1.7rem;
  justify-content: center;
  width: 1.7rem;
}

.loop-shell {
  padding: 1rem;
}

.loop-tabs {
  display: grid;
  gap: 0.6rem;
  grid-template-columns: 1fr;
}

.loop-tab {
  align-items: center;
  background: var(--aniot-surface);
  border: 1px solid var(--aniot-border);
  border-radius: 8px;
  color: var(--aniot-text);
  display: flex;
  gap: 0.75rem;
  min-height: 3.25rem;
  padding: 0.7rem;
  text-align: left;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
  width: 100%;
}

.loop-tab:hover,
.loop-tab:focus-visible,
.loop-tab[aria-selected="true"] {
  background: var(--aniot-soft);
  border-color: var(--aniot-primary);
  color: var(--aniot-primary-dark);
}

.loop-number {
  align-items: center;
  background: var(--aniot-secondary);
  border-radius: 999px;
  color: #ffffff;
  display: inline-flex;
  flex: 0 0 1.8rem;
  font-weight: 700;
  height: 1.8rem;
  justify-content: center;
  width: 1.8rem;
}

.loop-panel {
  background: var(--aniot-surface);
  border: 1px solid var(--aniot-border);
  border-radius: 8px;
  margin-top: 1rem;
  min-height: 12rem;
  padding: 1.25rem;
}

.loop-panel h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.loop-panel p {
  color: var(--aniot-text-soft);
  margin-bottom: 1rem;
}

.loop-panel-link {
  color: var(--aniot-primary-dark);
  font-weight: 700;
}

.participant-section {
  background: var(--aniot-surface);
  border-bottom: 1px solid var(--aniot-border);
  border-top: 1px solid var(--aniot-border);
}

.participant-card {
  height: 100%;
  padding: 1rem;
}

.participant-icon {
  align-items: center;
  background: var(--aniot-soft);
  border: 1px solid var(--aniot-subtle-border);
  border-radius: 999px;
  color: var(--aniot-primary-dark);
  display: inline-flex;
  height: 2.25rem;
  justify-content: center;
  margin-bottom: 0.85rem;
  width: 2.25rem;
}

.participant-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
}

.participant-card p {
  color: var(--aniot-muted);
  margin-bottom: 0;
}

.dataset-value-card {
  padding: 1.25rem;
}

.dataset-value-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  text-wrap: balance;
}

.value-chain {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.value-chain-item {
  border: 1px solid var(--aniot-border);
  border-radius: 8px;
  padding: 0.8rem;
}

.value-chain-label {
  color: var(--aniot-muted);
  display: block;
  font-size: 0.84rem;
  margin-bottom: 0.2rem;
}

.value-chain-value {
  color: var(--aniot-text);
  font-weight: 650;
}

.quality-meter {
  background: var(--aniot-sage-200);
  border-radius: 999px;
  height: 0.65rem;
  overflow: hidden;
}

.quality-meter span {
  background: var(--aniot-accent);
  display: block;
  height: 100%;
}

.dataset-lineage-visual {
  display: grid;
  gap: 0.85rem;
  margin: 1rem 0;
}

.dataset-lineage-item {
  background: var(--aniot-surface);
  border: 1px solid var(--aniot-border);
  border-radius: 8px;
  padding: 0.8rem;
  position: relative;
}

.dataset-lineage-root {
  background: var(--aniot-soft);
  border-color: var(--aniot-subtle-border);
}

.dataset-lineage-branches {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

.dataset-lineage-label {
  color: var(--aniot-muted);
  display: block;
  font-size: 0.82rem;
  font-weight: 650;
  margin-bottom: 0.2rem;
}

.dataset-lineage-value {
  color: var(--aniot-text);
  display: block;
  font-weight: 700;
  line-height: 1.32;
}

@media (min-width: 768px) {
  .overview-hero {
    padding: 5rem 0 4rem;
  }

  .hero-title {
    font-size: 3rem;
  }

  .loop-tabs {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .loop-tab {
    align-items: flex-start;
    flex-direction: column;
    min-height: 7rem;
  }

  .value-chain {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dataset-lineage-branches {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    position: relative;
  }

  .dataset-lineage-branches::before {
    background: var(--aniot-border);
    content: "";
    height: 1px;
    left: 10%;
    position: absolute;
    right: 10%;
    top: -0.45rem;
  }
}