/* Expanded research introductions. Inherit the site's Inter typography and palette. */
.home-topics { display: grid; gap: 48px; margin-block: 64px; min-width: 0; }
.home-topic { min-width: 0; padding: 28px; border: 1px solid var(--ref-border); border-radius: 24px; background: color-mix(in srgb,var(--color-surface) 70%,transparent); scroll-margin-top: 100px; }
.home-topics, .home-topic h2 { scroll-margin-top: 100px; }
.home-topic h2 { max-width: 100%; overflow-wrap: anywhere; }
.home-topic > p { line-height: 1.75; }
.home-topic-items { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; padding: 0; margin: 24px 0; list-style: none; }
.home-topic-items li { min-width: 0; padding: 20px; border: 1px solid var(--ref-border); border-radius: 16px; background: var(--color-canvas); overflow-wrap: anywhere; }
.home-topic-label { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 12px; }
.home-topic-label strong { font-size: 16px; line-height: 1.5; font-weight: 700; }
.home-topic-items li p { margin: 10px 0 0; color: var(--color-muted-ink); font-size: 15px; line-height: 1.75; }
.home-topic-badge { display: inline-block; padding: 3px 9px; border-radius: 8px; background: color-mix(in srgb,var(--color-accent) 12%,transparent); color: var(--color-accent); font-size: 12px; font-weight: 650; }
.home-topic--step-by-step .home-topic-items { grid-template-columns: 1fr; }
.home-topic--step-by-step .home-topic-items li { border-left: 3px solid var(--color-accent); }
.home-topic--step-by-step .home-topic-label strong { color: var(--color-accent); }
.home-topic--tier-grid .home-topic-items { grid-template-columns: 1fr; }
.home-topic--tier-grid .home-topic-items li { display: grid; grid-template-columns: minmax(60px,.3fr) minmax(0,1fr); gap: 20px; align-items: start; }
.home-topic--tier-grid .home-topic-items li p { margin-top: 0; }
.home-topic--tier-grid .home-topic-label { color: var(--color-accent); }
.home-topic--code-cards code { color: var(--color-ink); font-family: var(--font-mono,monospace); font-size: 16px; white-space: normal; }
@media (max-width: 767px) {
  .home-topics { gap: 32px; margin-block: 40px; }
  .home-topic { padding: 20px; }
  .home-topic-items { grid-template-columns: 1fr; gap: 12px; }
  .home-topic-items li { padding: 16px; }
  .home-topic--tier-grid .home-topic-items li { grid-template-columns: 1fr; gap: 8px; }
}