/* The Engine page keeps the complete capability guide readable at every size. */
body[data-page="engine"] main {
  max-width: 1320px;
  margin-inline: auto;
  padding: 70px 64px 90px;
}
.engine-access-note { display: flex; flex-wrap: wrap; gap: 6px 18px; width: fit-content; margin: 18px 0 24px; padding: 9px 13px; border: 1px solid var(--line); background: var(--panel); color: var(--muted); font: 11px/1.7 var(--mono); }
.engine-access-note > span:first-child { color: var(--fg); }
.engine-intro .lede { max-width: 790px; margin-bottom: 30px; }
.engine-intro .page-title { font-size: clamp(28px, 4.6vw, 58px); }
.engine-facts {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 24px;
  margin: 48px 0 0;
  padding: 24px 0;
  border-block: 1px solid var(--line);
}
.engine-facts dt { color: var(--muted); font: 9px/1.6 var(--mono); letter-spacing: .12em; }
.engine-facts dd { margin: 8px 0 0; font-size: 16px; color: var(--fg); }
.engine-workspace { margin: 36px 0 0; }
.engine-workspace .engine-image { margin-top: 0; }
.engine-workspace figcaption { margin-top: 14px; }
body[data-page="engine"] .engine-nav {
  margin: 36px 0 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  gap: 7px;
}
body[data-page="engine"] .engine-nav a { padding: 9px 12px; font-size: 9px; }
.engine-section { margin-top: 88px; scroll-margin-top: 0; }
.engine-section-heading { max-width: 780px; margin-bottom: 32px; }
.engine-section-heading .eyebrow { color: var(--cyan); margin-bottom: 16px; }
.engine-section-heading h2 { font-size: clamp(24px, 3.2vw, 38px); margin-bottom: 20px; }
.engine-section-heading > p:last-child { max-width: 680px; }
.engine-card-grid, .engine-tool-grid, .engine-game-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.engine-card { padding: 28px; border: 1px solid var(--line); background: var(--panel); min-width: 0; }
.engine-card h3, .engine-detail h3 { font-size: 22px; line-height: 1.2; margin-bottom: 14px; }
.engine-card > p { font-size: 14px; line-height: 1.7; }
.engine-card > .text-link { display: inline-block; margin-top: 20px; font-size: 12px; }
body[data-page="engine"] .feature-list { padding: 0; margin: 20px 0 0; list-style: none; color: var(--muted); font-size: 14px; }
body[data-page="engine"] .feature-list li { position: relative; padding-left: 17px; margin: 10px 0; line-height: 1.65; }
body[data-page="engine"] .feature-list li::before { content: ""; position: absolute; width: 5px; height: 1px; left: 0; top: .8em; background: var(--cyan); }
body[data-page="engine"] .feature-list li:last-child { margin-bottom: 0; }
.engine-pipeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 0; margin: 0 0 24px; border: 1px solid var(--line); }
.engine-pipeline li { min-width: 0; border-right: 1px solid var(--line); }
.engine-pipeline li:last-child { border-right: 0; }
.engine-pipeline a { display: block; padding: 20px 24px; font-size: 18px; line-height: 1.4; transition: background .2s; }
.engine-pipeline a:hover { background: var(--panel); }
.engine-pipeline span { display: block; margin-bottom: 10px; font: 9px/1.5 var(--mono); letter-spacing: .1em; color: var(--cyan); }
.engine-tool { padding: 30px; border: 1px solid var(--line); background: var(--panel); min-width: 0; scroll-margin-top: 0; }
.engine-tool > .readout { color: var(--cyan); font-size: 9px; margin-bottom: 18px; }
.engine-tool h3 { font-size: 29px; margin-bottom: 16px; line-height: 1.1; }
.engine-tool > p:not(.readout) { font-size: 15px; line-height: 1.7; }
.engine-tool-optional { border-style: dashed; border-color: #586355; background: #111713; }
.engine-tool-optional h3 { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.engine-optional-badge { display: inline-block; border: 1px solid #6b765e; padding: 5px 8px; color: var(--lime); font: 10px/1.3 var(--mono); letter-spacing: .03em; }
.engine-tool > p.engine-optional-note { font-size: 12px; line-height: 1.8; color: var(--muted); margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.engine-tool details { margin-top: 24px; border-top: 1px solid var(--line); }
.engine-tool summary { padding-top: 16px; color: var(--fg); font-size: 12px; cursor: pointer; }
.engine-tool summary::marker { color: var(--orange); }
.engine-secondary-tools { margin-top: 20px; }
.engine-terrain { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; padding: 36px; border: 1px solid var(--line); background: var(--panel); }
.engine-terrain-intro, .engine-ocean-copy, .engine-ocean-gallery, .engine-music-plan > div { min-width: 0; }
.engine-terrain .readout, .engine-ocean-copy > .readout, .engine-music-plan .readout { color: var(--cyan); font-size: 9px; line-height: 1.7; letter-spacing: .08em; }
.engine-terrain h3, .engine-ocean h3, .engine-music-plan h3 { margin: 18px 0; font-size: clamp(25px, 2.6vw, 32px); line-height: 1.2; }
.engine-terrain-intro > p:not(.readout), .engine-ocean-copy > p:not(.readout), .engine-music-plan p:not(.readout) { font-size: 14px; line-height: 1.8; }
.engine-terrain-steps { margin: 0; padding: 0; list-style: none; }
.engine-terrain-steps li { padding: 20px 0; border-bottom: 1px solid var(--line); }
.engine-terrain-steps li:first-child { padding-top: 0; }
.engine-terrain-steps li:last-child { padding-bottom: 0; border-bottom: 0; }
.engine-terrain-steps h4 { font-size: 19px; font-weight: 500; margin: 9px 0; }
.engine-terrain-steps p { font-size: 13px; line-height: 1.75; }
.engine-ocean { display: grid; grid-template-columns: .85fr 1.4fr; gap: 40px; margin-top: 36px; align-items: start; }
.engine-ocean-copy { padding: 10px 0; }
.engine-ocean-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.engine-ocean-gallery figure { margin: 0; min-width: 0; }
.engine-ocean-wide, .engine-capture-note { grid-column: 1 / -1; }
.engine-ocean-gallery a { display: block; position: relative; border: 1px solid var(--line); cursor: zoom-in; }
.engine-ocean-gallery img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; }
.engine-capture-expand { position: absolute; right: 12px; bottom: 12px; display: grid; place-items: center; width: 32px; height: 32px; background: #101612e6; color: var(--fg); }
.engine-capture-expand svg { width: 15px; height: 15px; }
.engine-ocean-gallery a:hover .engine-capture-expand { color: var(--orange); }
.engine-ocean-gallery figcaption { display: flex; flex-wrap: wrap; gap: 5px 16px; margin-top: 10px; color: var(--muted); font-size: 11px; line-height: 1.6; }
.engine-ocean-gallery figcaption .readout { color: var(--fg); font-size: 9px; }
.engine-capture-note { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.engine-music-plan { display: grid; grid-template-columns: .85fr 1.4fr; gap: 40px; margin-top: 28px; padding: 32px; border: 1px solid var(--line); border-left: 2px solid var(--cyan); }
.engine-music-plan p + p { margin-top: 14px; }
.engine-music-plan .text-link { display: inline-block; margin-top: 20px; font-size: 12px; }
.engine-note { color: var(--muted); font-size: 12px; line-height: 1.8; margin-top: 22px; }
.engine-runtime { border-top: 1px solid var(--line); }
.engine-detail { border-bottom: 1px solid var(--line); }
.engine-detail > summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 12px; list-style: none; cursor: pointer; }
.engine-detail > summary::-webkit-details-marker { display: none; }
.engine-detail > summary::after { content: "+"; flex: 0 0 auto; color: var(--orange); font: 24px/1 var(--mono); }
.engine-detail[open] > summary::after { content: "−"; }
.engine-detail > summary strong { display: block; font-size: 20px; font-weight: 500; line-height: 1.35; }
.engine-detail > summary span span { display: block; color: var(--muted); font-size: 13px; margin-top: 6px; }
.engine-detail > summary:hover strong { color: var(--cyan); }
.engine-detail-body { padding: 8px 28px 28px; }
.engine-detail-body .feature-list { margin-top: 0 !important; }
.engine-detail-body h3 { color: var(--cyan); font-size: 16px; }
.engine-detail-body.engine-card-grid { column-gap: 36px; row-gap: 8px; }
.engine-span { grid-column: 1 / -1; }
.engine-game-figure { margin: 0 0 24px; }
.engine-game-figure a { display: block; cursor: zoom-in; border: 1px solid var(--line); }
.engine-game-figure img { width: 100%; height: auto; }
.engine-game-figure figcaption { margin-top: 12px; }
.engine-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.engine-three .engine-card { padding: 24px; }
.engine-agent-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 0; margin: 0 0 28px; border-block: 1px solid var(--line); }
.engine-agent-flow li { padding: 28px 22px; border-right: 1px solid var(--line); }
.engine-agent-flow li:first-child { padding-left: 0; }
.engine-agent-flow li:last-child { border-right: 0; }
.engine-agent-flow .readout { color: var(--cyan); font-size: 9px; }
.engine-agent-flow h3 { font-size: 19px; margin: 20px 0 12px; line-height: 1.25; }
.engine-agent-flow p { font-size: 13px; line-height: 1.75; }
.engine-platform-table { margin-bottom: 28px; }
.engine-platform-table .spec-table { margin-top: 0; table-layout: fixed; }
.engine-platform-table caption { text-align: left; font: 10px/1.6 var(--mono); letter-spacing: .08em; color: var(--muted); padding-bottom: 16px; }
.engine-platform-table th:first-child { width: 18%; }
.engine-platform-table th:nth-child(2) { width: 28%; }
.engine-platform-table td { overflow-wrap: anywhere; }
.engine-game { border: 1px solid var(--line); background: var(--panel); min-width: 0; }
.engine-game-cover { display: block; overflow: hidden; border-bottom: 1px solid var(--line); }
.engine-game-cover img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .3s; }
.engine-game-cover:hover img { transform: scale(1.02); }
.engine-game-copy { padding: 26px; }
.engine-game-copy .readout { color: var(--cyan); font-size: 9px; }
.engine-game-copy h3 { margin: 17px 0 14px; font-size: 28px; }
.engine-game-copy > p:not(.readout) { font-size: 14px; }
.engine-game-links { display: flex; flex-wrap: wrap; gap: 15px 22px; margin-top: 24px; }
.engine-game-links a { font-size: 12px; }
.engine-game .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.engine-latest .engine-card { background: transparent; }
.engine-availability { border-left: 2px solid var(--orange); padding: 4px 0 4px 24px; margin-top: 32px; max-width: 820px; }
.engine-availability .readout { color: var(--orange); }
.engine-availability p { margin-top: 14px; font-size: 14px; }
.engine-availability a, body[data-page="engine"] .faq a { text-decoration: underline; text-underline-offset: 4px; color: var(--fg); }
body[data-page="engine"] .faq { margin-top: 70px; }
@media (min-width: 1050px) {
  body[data-page="engine"] .engine-nav { position: sticky; top: 0; z-index: 4; }
}
@media (max-width: 1049px) {
  body[data-page="engine"] main { padding-inline: 32px; }
  .engine-three { grid-template-columns: 1fr; }
  .engine-agent-flow { grid-template-columns: 1fr 1fr; }
  .engine-agent-flow li { padding: 24px; }
  .engine-agent-flow li:first-child { padding-left: 24px; }
  .engine-agent-flow li:nth-child(2) { border-right: 0; }
  .engine-agent-flow li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .engine-pipeline a { padding: 18px; font-size: 16px; }
}
@media (max-width: 760px) {
  .engine-terrain, .engine-ocean, .engine-music-plan { grid-template-columns: 1fr; gap: 28px; }
  .engine-terrain, .engine-music-plan { padding: 26px; }
  .engine-ocean-copy { padding: 0; }
}
@media (max-width: 640px) {
  body[data-page="engine"] main { padding: 45px 22px 60px; }
  .engine-intro .page-title { font-size: clamp(24px, 6.5vw, 40px); }
  .engine-facts { grid-template-columns: 1fr 1fr; margin-top: 32px; gap: 20px; }
  .engine-facts > div:last-child { grid-column: 1 / -1; }
  .engine-facts dd { font-size: 14px; }
  .engine-workspace { margin-top: 24px; }
  .engine-workspace figcaption, .engine-game-figure figcaption { font-size: 8px; }
  body[data-page="engine"] .engine-nav { gap: 6px; margin-top: 24px; }
  body[data-page="engine"] .engine-nav a { font-size: 8px; padding: 9px; }
  .engine-section { margin-top: 60px; scroll-margin-top: 0; }
  .engine-section-heading { margin-bottom: 24px; }
  .engine-section-heading h2 { font-size: clamp(22px, 6vw, 30px); }
  .engine-section-heading > p:last-child { font-size: 14px; }
  .engine-card-grid, .engine-tool-grid, .engine-game-grid { grid-template-columns: 1fr; gap: 16px; }
  .engine-card, .engine-tool { padding: 24px; }
  .engine-tool { scroll-margin-top: 0; }
  .engine-tool h3 { font-size: 26px; }
  .engine-terrain, .engine-music-plan { padding: 24px; }
  .engine-terrain h3, .engine-ocean h3, .engine-music-plan h3 { font-size: 26px; }
  .engine-ocean-gallery { gap: 14px; }
  .engine-ocean-gallery figcaption .readout { font-size: 8px; }
  .engine-capture-expand { right: 8px; bottom: 8px; width: 27px; height: 27px; }
  .engine-pipeline { grid-template-columns: 1fr 1fr; }
  .engine-pipeline li:nth-child(2) { border-right: 0; }
  .engine-pipeline li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .engine-pipeline a { padding: 18px; font-size: 15px; }
  .engine-pipeline span { font-size: 8px; }
  .engine-detail > summary { padding-inline: 0; gap: 16px; }
  .engine-detail > summary strong { font-size: 18px; }
  .engine-detail-body { padding-inline: 8px; }
  .engine-agent-flow { grid-template-columns: 1fr; }
  .engine-agent-flow li, .engine-agent-flow li:first-child { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .engine-agent-flow li:last-child { border-bottom: 0; }
  .engine-agent-flow h3 { margin-top: 12px; }
  .engine-platform-table .spec-table { font-size: 12px; }
  .engine-platform-table .spec-table th, .engine-platform-table .spec-table td { padding: 14px 6px; }
  .engine-platform-table th:first-child { width: 24%; }
  .engine-platform-table th:nth-child(2) { width: 28%; }
  .engine-platform-table th { overflow-wrap: anywhere; }
  .engine-game-copy { padding: 24px; }
  .engine-game-copy h3 { font-size: 25px; }
  .engine-availability { padding-left: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  .engine-pipeline a, .engine-game-cover img { transition: none; }
}