.guide-index {
  --guide-rule: #d8d1c6;
  --guide-quiet: #5f5e54;
  --guide-hover: #f0ede5;
  width: min(1120px, calc(100% - 2 * var(--space, 22px)));
  margin-inline: auto;
  padding-block: 22px clamp(56px, 8vw, 100px);
}

.guide-index-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--guide-quiet);
  font-size: 12px;
}

.guide-index-breadcrumb a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.guide-index-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  align-items: center;
  gap: clamp(25px, 6.5vw, 104px);
  padding-block: clamp(16px, 2.9vw, 36px) clamp(36px, 5.4vw, 72px);
}

.guide-index-hero h1 {
  margin: 0;
  font-size: clamp(58px, 7.2vw, 100px);
  line-height: 0.98;
}

.guide-index[lang^="zh"] .guide-index-hero h1 {
  font-size: clamp(40px, 5.3vw, 72px);
  line-height: 1.18;
  letter-spacing: 0.02em;
}

.guide-index-hero p {
  max-width: 32ch;
  margin-top: 17px;
  color: var(--guide-quiet);
  font-size: clamp(14px, 1.55vw, 17px);
  line-height: 1.8;
}

.guide-index-shortcut {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  margin-top: 12px;
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.guide-index-shortcut .arrow {
  width: 16px;
  transform: rotate(90deg);
}

.guide-index-hero img {
  width: 100%;
  aspect-ratio: 1.7;
  object-fit: cover;
}

.guide-index-group {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  align-items: start;
  gap: clamp(25px, 6.5vw, 104px);
  padding-block: 20px;
  border-top: 1px solid var(--guide-rule);
  scroll-margin-top: 18px;
}

.guide-index-group:last-child {
  border-bottom: 1px solid var(--guide-rule);
}

.guide-index-group h2 {
  margin: 6px 0 0;
  font-size: clamp(27px, 3.4vw, 40px);
  line-height: 1.16;
}

.guide-index[lang^="zh"] .guide-index-group h2 {
  font-size: clamp(21px, 2.7vw, 31px);
  line-height: 1.4;
}

.guide-index-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-index-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
  padding: 9px 3px 9px 0;
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.5;
}

.guide-index-links li + li {
  border-top: 1px solid var(--guide-rule);
}

.guide-index-links .arrow {
  flex: 0 0 18px;
  width: 18px;
}

.guide-index-more {
  border-top: 1px solid var(--guide-rule);
}

.guide-index-more summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
  padding: 7px 27px 7px 0;
  color: var(--guide-quiet);
  cursor: pointer;
  font-size: 13px;
  line-height: 1.5;
  list-style: none;
}

.guide-index-more summary::-webkit-details-marker {
  display: none;
}

.guide-index-more summary::after,
.guide-index-more summary::before {
  position: absolute;
  right: 6px;
  top: 50%;
  width: 11px;
  height: 1px;
  background: currentColor;
  content: "";
}

.guide-index-more summary::before {
  transform: rotate(90deg);
}

.guide-index-more[open] summary::before {
  display: none;
}

.guide-index-more .guide-index-links {
  margin: 0 0 3px 13px;
  padding-left: 13px;
  border-left: 1px solid var(--guide-rule);
}

.guide-index-more .guide-index-links a {
  font-size: 14px;
}

.guide-index-pages {
  display: flex;
  flex-wrap: wrap;
  margin-top: 7px;
  border-top: 1px solid var(--guide-rule);
}

.guide-index-pages a {
  display: grid;
  min-width: 44px;
  min-height: 44px;
  place-items: center;
  font-size: 13px;
}

.guide-index :is(.guide-index-links a, summary, .guide-index-pages a):hover {
  background: var(--guide-hover);
}

.guide-index :is(a, summary):focus-visible {
  outline: 2px solid #766043;
  outline-offset: 3px;
}

@media (max-width: 660px) {
  .guide-index {
    padding-top: 10px;
  }

  .guide-index-hero,
  .guide-index-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-index-hero {
    gap: 17px;
    padding-block: 12px 27px;
  }

  .guide-index-hero p {
    max-width: none;
    margin-top: 11px;
  }

  .guide-index-shortcut {
    margin-top: 2px;
  }

  .guide-index-hero img {
    aspect-ratio: 2;
  }

  .guide-index-group {
    gap: 8px;
    padding-block: 15px 12px;
  }

  .guide-index-group h2 {
    margin-top: 0;
  }
}