/* Home page: a welcome header and one big card per question. Loads after explainer.css for its tokens. */

.home {
  max-width: 1040px;
  margin: 0 auto;
  padding: 64px 16px 0;
}

.home h1 { font-size: 3.375rem; text-wrap: balance; }
.home .dek { max-width: 600px; }

.topics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}

.topic {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
}

a.topic { transition: border-color 0.15s ease; }
@media (hover: hover) {
  a.topic:hover { border-color: var(--ink-2); }
}
a.topic:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.topic-art {
  position: relative;
  display: flex;
  aspect-ratio: 3 / 1;
  background: var(--page);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.topic-art > i { flex: 1; display: block; }
.topic-art > canvas { display: block; width: 100%; height: 100%; object-fit: cover; }
.topic-art .col { flex: 1; display: flex; flex-direction: column; }
.topic-art .col > i { flex: 1; display: block; }
.topic-art .col.wash { flex: 2.4; }
.topic-art .tag {
  position: absolute;
  bottom: 6px;
  padding: 1px 5px;
  font: 600 0.6875rem/1.4 var(--sans);
  color: var(--ink);
  background: rgb(255 255 255 / 0.88);
}

.topic-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 12px 14px 14px;
}
.topic-num {
  margin: 0;
  font: 600 0.75rem/1.4 var(--sans);
  letter-spacing: 0.08em;
  color: var(--muted);
}
.topic h2 { margin: 2px 0 6px; font-size: 1.125rem; line-height: 1.25; }
.topic-body > p:not(.topic-num) { margin: 0; color: var(--ink-2); font-size: 0.875rem; line-height: 1.5; }

.topic-go {
  margin-top: auto;
  padding-top: 12px;
  font: 650 0.875rem/1.4 var(--sans);
}
.topic-go span { display: inline-block; transition: transform 0.15s ease; }
@media (hover: hover) {
  a.topic:hover .topic-go span { transform: translateX(3px); }
}

.is-soon .topic-go { color: var(--muted); font-weight: 600; }
.is-soon .topic-art { filter: saturate(0.85); }

.home-foot {
  margin-top: 56px;
  padding: 16px 0 56px;
  border-top: 1px solid var(--line);
  font: 0.875rem/1.55 var(--sans);
  color: var(--muted);
}
.home-foot p { margin: 0; }
.home-foot a { color: var(--ink-2); }

@media (prefers-reduced-motion: reduce) {
  a.topic, .topic-go span { transition: none; }
  a.topic:hover .topic-go span { transform: none; }
}

/* Fewer per row as the screen narrows: 3, then 2, then 1 on phones. */
@media (max-width: 1000px) {
  .topics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .home { padding-top: 44px; }
  .home h1 { font-size: 2.5rem; }
  .topics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 32px; }
}

@media (max-width: 520px) {
  .topics { grid-template-columns: minmax(0, 1fr); }
  .topic h2 { font-size: 1.25rem; }
}

.logo-lg { display: block; width: 72px; height: 72px; margin: 0 0 18px; }
.home-brand .logo { width: 20px; height: 20px; margin-right: 5px; }