.guides-index {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 24px 64px;
}

.guides-index__title {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.guides-index__intro {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 30px;
}

.guides-index__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: 18px;
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  color: var(--text);
  overflow: hidden;
  min-width: 0;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.guide-card:hover,
.guide-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(6, 182, 212, 0.42);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
}

.guide-card__thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #0e1620;
  border-bottom: 1px solid var(--border);
  display: block;
}

.guide-card__body {
  padding: 18px 20px 20px;
}

.guide-card__title {
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.25;
}

.guide-card__summary {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
  margin: 0;
}

@media (max-width: 640px) {
  .guides-index {
    padding: 38px 16px 48px;
  }
  .guide-card__body {
    padding: 16px;
  }
}