/* One product narrative: a sticky index, readable close-ups, and quiet copy.
   These overrides apply only to the homepage tour; the glass objects are shared. */
.home-concise .home-product-tour { padding: 88px 0; background: var(--card); }
.home-product-tour__inner { max-width: 1560px; margin-inline: auto; }
.home-product-tour__heading { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; margin-bottom: 56px; }
.home-product-tour__heading > .label { padding-top: 9px; color: var(--accent); }
.home-product-tour__heading .h2 { max-width: 22ch; font-size: 46px; line-height: 1.08; }
.home-product-tour__heading p { margin-top: 16px; color: var(--ink-2); font-size: 18px; line-height: 1.5; }
.home-product-tour__layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; align-items: start; }
.home-product-tour__nav { position: sticky; top: 112px; align-self: start; display: flex; flex-direction: column; }
.home-product-tour__nav a { padding: 18px 0; border-bottom: 1px solid var(--rule); color: var(--muted); text-decoration: none; font-size: 15px; line-height: 1.4; transition: color .3s, border-color .3s; }
.home-product-tour__nav a:first-child { padding-top: 0; }
.home-product-tour__nav a:hover, .home-product-tour__nav a.is-current { color: var(--accent); border-color: var(--accent); }
.home-product-tour__nav a:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; border-radius: 2px; }
.home-product-tour .home-features__stack { min-width: 0; gap: 56px; }
.home-product-tour .home-feature { display: grid; grid-template-columns: minmax(0, 1fr) minmax(230px, .4fr); gap: 32px; align-items: center; scroll-margin-top: 112px; transition: opacity .5s ease; }
.home-product-tour #memory.home-feature { scroll-margin-top: 112px; }
.home-product-tour[data-tour-ready] .home-feature { opacity: .35; }
.home-product-tour[data-tour-ready] .home-feature.is-current,
.home-product-tour[data-tour-ready] .home-feature:focus-within { opacity: 1; }
.home-product-tour .home-feature__copy { padding: 0; border-radius: 0; background: transparent; color: var(--ink); }
.home-product-tour .home-feature__copy h3 { max-width: 18ch; font-family: var(--display); font-size: 27px; line-height: 1.15; letter-spacing: -.02em; }
.home-product-tour .home-feature__copy p { max-width: 36ch; margin-top: 16px; color: var(--ink-2); font-size: 16px; line-height: 1.55; }
.home-product-tour .home-feature__copy a { margin-top: 22px; gap: 8px; font-size: 14px; color: var(--accent); }
.home-product-tour .home-feature__engines { margin-top: 16px; font-size: 11px; color: var(--muted); }
.home-product-tour .home-feature__art { min-width: 0; min-height: 560px; padding: 26px 22px; border-radius: 16px; }
.home-product-tour .home-feature__art.home-lab-brain__stage { min-height: 560px; padding: 26px 22px; }
.home-product-tour .home-lab-brain__memory { width: 92%; padding: 20px; }
.home-product-tour .home-lab-brain__memory li p { font-size: 13px; }
.home-product-tour .home-lab-brain__scope { font-size: 10px; }
.home-product-tour .home-lab-brain__bridge { width: 95%; padding: 20px 0; }
.home-product-tour .home-lab-brain__chat { width: 94%; }
.home-product-tour .home-lab-brain__turns { padding: 20px; }
.home-product-tour .home-lab-brain__question { font-size: 14px; }
.home-product-tour .home-lab-brain__answer p { font-size: 14px; }
.home-product-tour .feature-sequence { padding: 20px; }
.home-product-tour .feature-sequence__heading strong { font-size: 22px; }
.home-product-tour .feature-design__results { gap: 16px; margin: 20px 4px 0; }
.home-product-tour .feature-digest { padding: 16px; }
.home-product-tour .feature-digest__title { flex-wrap: wrap; gap: 5px; }
.home-product-tour .feature-checks { padding: 18px; margin-top: 32px; }
.home-product-tour .feature-checks__title { font-size: 20px; }
.home-product-tour .feature-check { flex-wrap: wrap; gap: 5px; font-size: 11px; }
.home-product-tour .feature-analysis { margin: 0; }
.home-product-tour .feature-analysis__source { width: 190px; padding: 12px 16px; }
.home-product-tour .feature-analysis__source > strong { font-size: 13px; }
.home-product-tour .feature-analysis__source > span:last-child { font-size: 11px; }
.home-product-tour .feature-analysis__chart { width: 96%; padding: 22px 18px 18px; }
.home-product-tour .feature-analysis__heading strong { font-size: 23px; }
.home-product-tour .feature-analysis__axis, .home-product-tour .feature-analysis__conditions { font-size: 11px; }
.home-product-tour .feature-analysis__decision { width: 94%; padding: 18px; gap: 12px; }
.home-product-tour .feature-analysis__decision strong { font-size: 16px; }
.home-product-tour .feature-analysis__decision p, .home-product-tour .feature-analysis__next { font-size: 12px; }
.home-product-tour .feature-project { padding: 0; }
.home-product-tour .feature-records { gap: 24px; }
.home-product-tour .feature-object { padding: 16px 14px; }
.home-product-tour .feature-object > strong { font-size: 14px; }
.home-product-tour .feature-object p { font-size: 11px; }
.home-product-tour .feature-project__followup { margin-left: 6%; padding: 14px; }
.home-product-tour [data-home-feature="analysis"][data-running="true"][data-phase="1"] .feature-analysis__group rect { transform-box: fill-box; transform-origin: center bottom; animation: home-tour-bar-in .9s ease both; }
@keyframes home-tour-bar-in { from { transform: scaleY(.05); } to { transform: scaleY(1); } }
@media (max-width: 1200px) {
  .home-product-tour__heading, .home-product-tour__layout { grid-template-columns: 160px minmax(0, 1fr); gap: 28px; }
  .home-product-tour .home-feature { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .home-product-tour .home-feature__copy { max-width: 520px; }
  .home-product-tour .home-feature__copy h3 { max-width: none; }
  .home-product-tour .home-feature__copy h3 br { display: none; }
  .home-product-tour .home-feature__copy p { max-width: none; }
}
@media (max-width: 800px) {
  .home-concise .home-product-tour { padding: 48px 0; }
  .home-product-tour__heading { display: block; margin-bottom: 28px; }
  .home-product-tour__heading > .label { display: block; padding: 0; margin-bottom: 16px; }
  .home-product-tour__heading .h2 { font-size: 34px; }
  .home-product-tour__heading p { font-size: 16px; }
  .home-product-tour__layout { display: block; }
  .home-product-tour__nav { top: 64px; z-index: 3; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 20px; padding: 10px 0; margin-bottom: 28px; background: var(--card); }
  .home-product-tour__nav a, .home-product-tour__nav a:first-child { padding: 10px 0; font-size: 14px; }
  .home-product-tour .home-features__stack { gap: 48px; }
  /* The shared header already reserves 92px through scroll-padding. */
  .home-product-tour .home-feature { scroll-margin-top: 88px; }
  .home-product-tour #memory.home-feature { scroll-margin-top: 88px; }
  .home-product-tour .home-feature__copy { grid-row: 1; }
  .home-product-tour .home-feature__copy h3 { font-size: 28px; }
  .home-product-tour .home-feature__art,
  .home-product-tour .home-feature__art.home-lab-brain__stage { min-height: 0; padding: 24px 16px; }
  .home-product-tour .home-lab-brain__memory { width: 100%; padding: 16px; }
  .home-product-tour .home-lab-brain__memory-head { font-size: 12px; }
  .home-product-tour .home-lab-brain__chat { width: 100%; }
  .home-product-tour .home-lab-brain__turns { padding: 16px; }
  .home-product-tour .home-lab-brain__question { margin-left: 8px; }
}
@media (max-width: 500px) {
  .home-product-tour .feature-design__results { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .home-product-tour .feature-checks { margin: 0 0 0 8px; }
  .home-product-tour .feature-sequence { padding: 16px; }
  .home-product-tour .feature-analysis__source { width: fit-content; }
  .home-product-tour .feature-analysis__chart { width: 100%; padding: 20px 14px; }
  .home-product-tour .feature-analysis__decision { width: 96%; padding: 16px 12px; }
  .home-product-tour .feature-records { gap: 18px; }
  .home-product-tour .feature-object { padding: 14px 10px; }
  .home-product-tour .feature-object > strong { font-size: 13px; }
  .home-product-tour .feature-project__head { padding: 0; gap: 8px; }
  .home-product-tour .feature-project__head strong { font-size: 14px; }
  .home-product-tour .feature-project__followup { margin-left: 0; padding: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .home-product-tour .home-feature, .home-product-tour__nav a { transition: none; }
  .home-product-tour[data-tour-ready] .home-feature { opacity: 1; }
}

/* Audit fix (10-10): the header slides away while you scroll down, so on a phone the tabs move up with it
   instead of leaving a 64px see-through gap where the header was. */
@media (max-width: 800px) {
  .home-product-tour__nav { transition: top .38s cubic-bezier(.22, 1, .36, 1); }
  body:has(.nav2.is-hidden) .home-product-tour__nav { top: 0; }
}
@media (max-width: 800px) and (prefers-reduced-motion: reduce) { .home-product-tour__nav { transition: none; } }