main.home-shell {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  margin: 0 auto;
  background: var(--card);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow);
}

.home-header {
  margin-bottom: 4px;
}

.home-title {
  margin-bottom: 8px;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.home-subtitle {
  color: var(--muted);
  line-height: 1.7;
}

.home-grid {
  margin-top: 28px;
  display: grid;
  gap: 16px;
}

.home-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(255, 255, 255, 0.55);
  transition:
    transform var(--ease-standard),
    border-color var(--ease-standard),
    background-color var(--ease-standard);
}

.home-card:hover {
  transform: translateY(-2px);
  border-color: rgba(192, 57, 43, 0.4);
  background: #fff7ef;
}

.home-card h2 {
  margin-bottom: 6px;
  font-size: 1.2rem;
}

.home-card--intro h2 {
  margin-bottom: 0;
}

.home-card--intro {
  position: relative;
  overflow: hidden;
}

.home-card--intro > * {
  position: relative;
  z-index: 1;
}

.home-intro-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.home-intro-title {
  margin: 0;
}

.home-card p {
  font-size: 0.96rem;
  color: var(--muted);
  line-height: 1.7;
}

.home-tab-panel {
  margin-top: 12px;
}

.home-footnote {
  font-size: 0.86rem;
  color: var(--muted);
}

.home-footnote-row {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.home-github-link {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: inherit;
  border: var(--border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  transition:
    transform var(--ease-standard),
    border-color var(--ease-standard),
    background-color var(--ease-standard);
}

.home-github-link:hover {
  transform: translateY(-1px);
  border-color: rgba(192, 57, 43, 0.4);
  background: #fff7ef;
}

.home-github-link svg {
  display: block;
}

.home-card--clickable {
  cursor: pointer;
}

:root[data-theme="dark"] main.home-shell {
  background: rgba(28, 37, 46, 0.92);
}

:root[data-theme="dark"] .home-card {
  background: rgba(28, 37, 46, 0.88);
}

:root[data-theme="dark"] .home-card:hover {
  border-color: rgba(222, 127, 91, 0.42);
  background: rgba(222, 127, 91, 0.14);
}

:root[data-theme="dark"] .home-github-link {
  background: rgba(28, 37, 46, 0.88);
}

:root[data-theme="dark"] .home-github-link:hover {
  border-color: rgba(222, 127, 91, 0.42);
  background: rgba(222, 127, 91, 0.14);
}

@media (max-width: 640px) {
  body {
    padding: 28px 16px 36px;
  }

  main.home-shell {
    padding: 24px 18px;
  }

  .home-intro-head {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .home-footnote-row {
    align-items: flex-start;
  }
}