* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface);
}

a {
  color: inherit;
}

.top-app-bar,
.hero-section,
main {
  width: 100%;
  max-width: 1400px;
  margin-inline: auto;
}

.top-app-bar {
  min-height: 64px;
  padding: 0 5vw;
  display: flex;
  align-items: center;
}

.hero-section {
  padding: 1rem 5vw 2rem;
}

.hero-card {
  padding: clamp(2.5rem, 7vw, 4rem) clamp(2rem, 6vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
  border-radius: 32px;
}

.hero-title {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.hero-subtitle {
  max-width: 680px;
  color: var(--md-sys-color-on-secondary-container);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  line-height: 1.5;
  opacity: 0.85;
}

.app-count {
  color: var(--md-sys-color-on-secondary-container);
  font-size: 0.95rem;
  opacity: 0.8;
}

.app-count strong {
  font-size: 1.15rem;
}

main {
  flex: 1;
  padding: 1rem 5vw 4rem;
}

.filters {
  margin: 0 0 3rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.filter-chip {
  min-height: 42px;
  padding: 0.65rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-on-surface-variant);
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.filter-chip:hover,
.filter-chip[aria-current="page"] {
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
  border-color: transparent;
}

.filter-chip:hover {
  transform: translateY(-2px);
}

.catalog {
  display: grid;
  gap: 4rem;
}

.app-section {
  display: grid;
  gap: 1.5rem;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.section-heading .eyebrow {
  margin-bottom: 0.45rem;
  color: var(--md-sys-color-primary);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-heading h2 {
  color: var(--md-sys-color-on-surface);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.section-heading > p {
  max-width: 420px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  text-align: right;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.app-card {
  min-width: 0;
  min-height: 250px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-variant);
  border-radius: 28px;
  transition: filter 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.app-card:hover {
  filter: brightness(0.95);
  transform: translateY(-4px);
  box-shadow: 0 8px 16px color-mix(in srgb, var(--md-sys-color-shadow) 8%, transparent);
}

.category-badge {
  display: inline-flex;
  width: fit-content;
  padding: 0.3rem 0.8rem;
  color: var(--md-sys-color-on-secondary-container);
  background: var(--md-sys-color-secondary-container);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.app-card h3 {
  margin: 1rem 0 0.75rem;
  color: var(--md-sys-color-on-surface);
  font-size: 1.5rem;
  line-height: 1.3;
}

.app-card p {
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.65;
  white-space: pre-line;
}

.open-app {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--md-sys-color-primary);
  font-weight: 700;
  text-decoration: none;
}

.open-app:hover span:first-child {
  text-decoration: underline;
  text-underline-offset: 0.3rem;
}

.empty-state {
  padding: 3rem 2rem;
  color: var(--md-sys-color-outline);
  background: var(--md-sys-color-surface-container-low);
  border: 1px dashed var(--md-sys-color-outline-variant);
  border-radius: 28px;
  text-align: center;
}

/* footer_html 来自 site.toml；与首页和梨记保持同一居中规则。 */
.site-footer {
  width: 100%;
  margin-top: auto;
  padding: 32px 24px;
  color: var(--md-sys-color-on-surface-variant);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font-size: 0.85rem;
  text-align: center;
}

.site-footer a {
  margin: 0 8px;
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 1023px) {
  .app-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .top-app-bar {
    padding-inline: 4vw;
  }

  .hero-section,
  main {
    padding-inline: 4vw;
  }

  .hero-card {
    border-radius: 24px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .section-heading > p {
    text-align: left;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .filter-chip,
  .app-card {
    transition: none;
  }
}