.island-hero {
  display: grid;
  grid-template-columns: minmax(140px, 240px) 1fr;
  align-items: center;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.island-hero__art .island-card__art {
  width: 100%;
  animation: island-float 5s ease-in-out infinite;
}

.island-hero__lead {
  color: var(--color-text-muted);
}

.strand-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.strand-filter__chip {
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-target);
  padding: 0 var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
  transition: border-color var(--duration-fast);
}

.strand-filter__chip:hover {
  border-color: var(--strand-color, var(--color-primary));
}

.strand-filter__chip[aria-current='true'] {
  border-color: var(--strand-color, var(--color-primary));
  background: var(--color-surface-muted);
}

/* Con đường nối các trạm (chương): đường nét đứt, mỗi trạm một chấm màu mạch. */
.chapter-path {
  position: relative;
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0 0 0 var(--space-6);
  list-style: none;
}

.chapter-path::before {
  content: '';
  position: absolute;
  top: var(--space-4);
  bottom: var(--space-4);
  left: 11px;
  border-left: 4px dashed var(--color-sand);
}

.chapter-station {
  position: relative;
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-5);
  border: 2px solid var(--color-border);
  border-left: 8px solid var(--strand-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--duration-base) var(--ease-pop),
    box-shadow var(--duration-base);
}

.chapter-station:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-lift);
}

.chapter-station__marker {
  position: absolute;
  top: 50%;
  left: calc(-1 * var(--space-6) - 2px);
  width: 28px;
  height: 28px;
  border: 4px solid var(--color-surface);
  border-radius: var(--radius-pill);
  background: var(--strand-color);
  transform: translateY(-50%);
  box-shadow: var(--shadow-soft);
}

.chapter-station__label {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.chapter-station__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.3;
}

.chapter-station__meta {
  color: var(--color-text-muted);
}

@media (min-width: 900px) {
  .chapter-path {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-left: 0;
  }

  .chapter-path::before,
  .chapter-station__marker {
    display: none;
  }
}

@media (max-width: 560px) {
  .island-hero {
    grid-template-columns: 1fr;
  }

  .island-hero__art {
    max-width: 200px;
  }
}