/* Portfolio-only opening composition. The original v1 release stays immutable. */
body.home-page { --hub-base: #080d16; }
body.home-page .hub-hero { display: flex; flex-direction: column; width: 100%; max-width: 1720px; gap: 0; padding: 0; margin: 0 auto; }
body.home-page .engineering-hero { width: 100%; max-width: none; min-width: 0; padding: 0; margin: 0; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
.portfolio-stage { position: relative; width: min(100%, calc(56svh * 1920 / 772), 1616px); margin-inline: auto; aspect-ratio: 1920 / 772; overflow: hidden; background: transparent; mask-image: linear-gradient(to bottom, transparent, #000 5%, #000 93%, transparent); }
.portfolio-stage picture, .portfolio-stage img, .portfolio-stage video { display: block; position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; border: 0; border-radius: 0; }
.portfolio-stage picture, .portfolio-stage video { mask-image: linear-gradient(to right, transparent, #000 3%, #000 97%, transparent); }
.portfolio-stage video { opacity: 0; transition: opacity 450ms ease; }
.portfolio-stage video[data-ready] { opacity: 1; }
.portfolio-film-bar { display: flex; align-items: center; gap: 12px; margin: 0 auto; width: min(1400px, calc(100% - 2 * var(--page-gutter))); padding: 4px 0 20px; border-bottom: 1px solid #ffffff1a; }
.portfolio-film-bar p { flex: 1; margin: 0; font: 500 0.8125rem/1.6 var(--font-body); color: #d7e1e7; }
.portfolio-film-bar p > span { margin-right: 14px; color: #ff9a64; font-family: var(--font-mono); }
.portfolio-film-bar small { display: block; color: #aebdca; font-size: 0.75rem; }
.portfolio-film-bar button, .portfolio-film-bar a { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; flex: 0 0 auto; padding: 10px 16px; border: 1px solid #ffffff30; border-radius: 999px; background: #101923; color: #eef3fb; font: 500 0.8125rem/1.4 var(--font-body); text-decoration: none; cursor: pointer; }
.portfolio-film-bar a { gap: 12px; border-color: transparent; background: transparent; }
.portfolio-film-bar button[hidden] { display: none; }
.portfolio-film-bar button:hover, .portfolio-film-bar a:hover { background: #20312f; }
.portfolio-film-bar :is(button,a):focus-visible { outline: 3px solid #ffca8a; outline-offset: 3px; }
body.home-page .hub-hero-copy { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(0,1fr); gap: 12px 48px; width: min(1400px, calc(100% - 2 * var(--page-gutter))); max-width: none; margin: 0 auto; padding: 28px 0 40px; }
body.home-page .hub-hero-copy > .eyebrow { grid-column: 1; margin: 0; font-size: 0.75rem; letter-spacing: 0; color: #9fb8c6; }
body.home-page .hub-hero h1 { grid-column: 1; grid-row: 2 / 4; max-width: 22ch; margin: 0; font-size: 3rem; line-height: 1.12; letter-spacing: 0; }
body.home-page .hub-hero-statement { grid-column: 2; grid-row: 1 / 3; align-self: end; max-width: 48ch; margin: 0; font-size: 1.0625rem; line-height: 1.6; font-weight: 400; color: #bfceca; }
body.home-page .hub-hero .hub-actions { grid-column: 2; grid-row: 3; gap: 10px; margin-top: 6px; }
body.home-page .hub-hero .hub-actions a { font-size: 0.8125rem; padding: 12px 16px; }
body.home-page .hub-hero .hub-actions a:last-child { border: 0; background: transparent; padding-inline: 0; text-decoration: underline; text-underline-offset: 5px; }
.hero-evidence-paths { padding-block: 20px 0; }
.hero-evidence-paths .audience-paths { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; }
.hero-evidence-paths .audience-paths a { background: transparent; border-color: #ffffff1a; font-size: 0.875rem; }
.hero-evidence-paths .audience-paths span { font-size: 0.75rem; }
.hero-evidence-paths details { margin-top: 20px; }
.hero-evidence-paths summary { display: list-item; min-height: 48px; padding: 12px 0; cursor: pointer; color: #bfceca; }
.hero-evidence-paths .hub-system-map { width: min(100%, 900px); margin: 20px auto; }
.hero-evidence-paths .hub-hero-context { max-width: 85ch; margin: 24px 0; }
@media (max-width: 1000px) {
  body.home-page .hub-hero-copy { grid-template-columns: 1fr 1fr; gap: 12px 28px; }
  body.home-page .hub-hero h1 { font-size: 2.5rem; }
  .hero-evidence-paths .audience-paths { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 600px) {
  body.home-page .hub-hero-copy { display: flex; flex-direction: column; padding: 24px 0 28px; gap: 16px; }
  body.home-page .hub-hero h1 { font-size: 2.25rem; max-width: 22ch; }
  body.home-page .hub-hero-statement { font-size: 1rem; align-self: start; }
  body.home-page .hub-hero-copy > .eyebrow { font-size: 0.75rem; letter-spacing: 0; }
  body.home-page .hub-hero .hub-actions { display: grid; grid-template-columns: 1fr; width: 100%; margin: 0; }
  body.home-page .hub-hero .hub-actions a { justify-content: center; }
  .portfolio-film-bar { gap: 4px 8px; padding: 0 0 12px; flex-wrap: wrap; }
  .portfolio-film-bar p { flex: 1 0 100%; font-size: 0.75rem; }
  .portfolio-film-bar p > span { margin-right: 8px; }
  .portfolio-film-bar small { display: inline; margin-left: 0; }
  .portfolio-film-bar button, .portfolio-film-bar a { min-height: 48px; padding: 10px 12px; font-size: .75rem; }
  .hero-evidence-paths .audience-paths { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 379px) { .hero-evidence-paths .audience-paths { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .portfolio-stage video { transition: none; } }