/* The landing shares the site tokens in style.css and adds the workbench layout. */
.landing { --player-bg: #fff; background: var(--bg); color: var(--text); }
.dark .landing { --player-bg: #152337; }
.landing .head-nav a[href*="app."] { background: var(--accent-fill); color: #fff; }
.landing .head-nav a[href*="app."]:hover { background: var(--accent-fill-hover); color: #fff; }
.landing main { max-width: 1600px; margin: auto; padding: 0 32px; }
.demo-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 40px 0 32px; }
.demo-intro h1 { font-size: clamp(34px, 3.4vw, 52px); line-height: 1.04; letter-spacing: -.03em; font-weight: 650; color: var(--heading); margin: 0; }
.demo-intro p { font-size: 15px; line-height: 1.65; max-width: 52ch; margin: 0; }
.demo-lab { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 8px; scroll-margin-top: 20px; }
.demo-catalog { background: #2458cf; color: #fff; padding: 20px 16px 24px; min-width: 0; }
.demo-catalog h2 { color: #dce7ff; font-size: 12px; font-weight: 500; margin: 0 8px 8px; } .demo-choice + h2 { margin-top: 22px; }
.demo-choice { display: flex; gap: 12px; align-items: center; padding: 11px 8px; text-decoration: none; color: #fff; border: 1px solid transparent; border-radius: 4px; }
.demo-choice:hover { background: #1946ae; color: #fff; } .demo-choice.is-selected { border-color: #b7d1ff; background: #1946ae; }
.demo-choice img { width: 74px; height: 56px; object-fit: cover; border-radius: 2px; flex-shrink: 0; }
.demo-choice strong { font-size: 14px; font-weight: 600; line-height: 1.3; display: block; }
.demo-choice small { font-size: 11px; line-height: 1.5; color: #dce7ff; display: block; margin-top: 3px; }
.catalog-source { display: block; margin: 24px 8px 0; color: #fff; font-size: 12px; text-decoration-color: #b7d1ff; }
.active-demo { min-width: 0; background: var(--player-bg); border: 1px solid var(--line); }
#demo-player { width: 100%; height: 790px; border: 0; display: block; }
.engine-principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px; padding: 42px 0; }
.engine-principles h2 { font-size: 21px; margin: 0 0 12px; color: var(--heading); font-weight: 600; }
.engine-principles p { font-size: 14px; line-height: 1.7; margin: 0 0 15px; max-width: 55ch; }
.engine-principles a { font-size: 13px; color: var(--accent); }
.demo-close { display: flex; align-items: center; justify-content: space-between; gap: 40px; background: #e4ecfb; padding: 32px; color: #162d45; }
.dark .demo-close { background: #17273f; color: var(--heading); }
.dark .demo-close p { color: var(--text); }
.demo-close h2 { font-size: 28px; margin: 0 0 10px; font-weight: 600; } .demo-close p { margin: 0; max-width: 65ch; font-size: 14px; }
.start-link { flex-shrink: 0; padding: 12px 18px; background: var(--accent-fill); border-radius: 4px; color: white; text-decoration: none; font-size: 14px; }
.start-link:hover { background: var(--accent-fill-hover); }
.demo-updates { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px; align-items: start; padding: 36px 0; }
.demo-updates h2 { font-size: 19px; font-weight: 600; color: var(--heading); margin: 0; } .demo-updates .subscribe { margin: 0; }
/* The label names the field from above it: in the row it wrapped to two lines between the heading and the input. */
.demo-updates label { font-size: 13px; width: 100%; }
.landing .site-foot { max-width: none; padding: 25px 32px; border-top: 1px solid var(--line); }
@media (max-width: 1200px) { .demo-lab { grid-template-columns: 240px minmax(0, 1fr); } .demo-choice img { width: 54px; height: 44px; } }
/* Stacked, the six models form one grid above the player: three across on tablets, two on phones, one below 380px. */
@media (max-width: 1000px) {
  .demo-lab { grid-template-columns: 1fr; }
  .demo-catalog { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding: 12px; gap: 4px; }
  .demo-catalog h2 { display: none; }
  .catalog-source { grid-column: 1 / -1; margin: 10px 4px 2px; }
  #demo-player { height: 760px; }
}
@media (max-width: 800px) {
  .landing main { padding: 0 16px; }
  .demo-intro { grid-template-columns: 1fr; gap: 14px; padding: 24px 0; }
  .demo-intro h1 { font-size: 36px; } .demo-intro p { font-size: 14px; }
  .demo-catalog { grid-template-columns: 1fr 1fr; padding: 10px; gap: 3px; }
  .demo-choice { padding: 8px 9px; min-height: 44px; } .demo-choice img { display: none; } .demo-choice strong { font-size: 13px; }
  .engine-principles { grid-template-columns: 1fr; gap: 28px; padding: 30px 0; }
  .demo-close { flex-direction: column; align-items: flex-start; gap: 24px; padding: 24px; } .demo-close h2 { font-size: 24px; }
  .demo-updates { display: block; } .demo-updates .subscribe { margin-top: 16px; }
}
@media (max-width: 380px) { .demo-catalog { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .landing * { scroll-behavior: auto; transition: none; } }