:root {
  --bg: #0d0f12;
  --bg-2: #14171c;
  --ink: #e9ecf1;
  --ink-dim: #a3abb8;
  --ink-faint: #8a93a1; /* 2026-10-19: was #6c7480, 4.0:1 on --bg; now about 6:1 (WCAG AA for small text) */
  --amber: #ffc66b;
  --amber-deep: #e59a2f;
  --line: rgba(255, 255, 255, 0.08);
  --head: "Saira Semi Condensed", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --wrap: min(1120px, 100% - 32px);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: var(--head); line-height: 1.1; margin: 0; }
h2 { font-size: clamp(30px, 5vw, 52px); font-weight: 800; letter-spacing: 0.005em; }
h3 { font-size: 22px; font-weight: 700; }
p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

.eyebrow {
  font: 600 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--amber);
  margin-bottom: 18px;
}
.lede { color: var(--ink-dim); font-size: clamp(17px, 2vw, 20px); max-width: 60ch; margin-top: 20px; }

/* Buttons */
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; margin-top: 34px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 28px;
  font: 700 18px/1 var(--head); letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none;
  border-radius: 4px; cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn--primary {
  color: #1a1206;
  background: linear-gradient(180deg, var(--amber), var(--amber-deep));
  box-shadow: 0 0 0 1px rgba(255, 198, 107, 0.4), 0 10px 30px -10px rgba(229, 154, 47, 0.7);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(255, 198, 107, 0.6), 0 14px 40px -10px rgba(229, 154, 47, 0.9); }
.btn--soon, .btn--soon:hover {
  cursor: default; transform: none;
  color: var(--amber); background: rgba(255, 198, 107, 0.08);
  box-shadow: inset 0 0 0 1px rgba(255, 198, 107, 0.45);
}
.cta__note { font: 500 14px var(--mono); color: var(--ink-faint); letter-spacing: 0.06em; }

/* Hero */
.hero {
  position: relative; min-height: 100svh;
  display: grid; place-items: center; text-align: center;
  overflow: hidden; isolation: isolate;
}
.hero__bg {
  position: absolute; inset: -4%; z-index: -2;
  background-size: cover; background-position: center;
  filter: saturate(0.95) brightness(0.75);
  animation: drift 40s ease-in-out infinite alternate;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse at 50% 45%, rgba(13, 15, 18, 0.15) 0%, rgba(13, 15, 18, 0.75) 70%),
    linear-gradient(180deg, rgba(13, 15, 18, 0.2) 60%, var(--bg) 100%);
}
.hero__inner { width: var(--wrap); padding: 80px 0; display: flex; flex-direction: column; align-items: center; }
.hero__logo img { width: min(640px, 88vw); filter: drop-shadow(0 8px 30px rgba(0, 0, 0, 0.6)); }
.hero__tag { margin-top: 18px; font: 500 clamp(18px, 2.4vw, 24px) var(--mono); font-style: italic; color: var(--ink); opacity: 0.9; }
.hero .cta { justify-content: center; }
.hero__scroll {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  color: var(--ink-faint); font-size: 30px; text-decoration: none;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes drift { from { transform: scale(1.02) translate(0, 0); } to { transform: scale(1.08) translate(-1.5%, -1%); } }
@keyframes bob { 50% { transform: translate(-50%, 6px); } }

/* Wake */
.wake { width: var(--wrap); margin: 0 auto; padding: 120px 0 100px; }
.wake h2 { max-width: 18ch; }
.log {
  margin: 56px 0 0; padding: 26px 30px; max-width: 640px;
  background: var(--bg-2); border-left: 3px solid var(--amber);
  font: italic 400 18px/1.7 var(--mono); color: var(--ink);
  position: relative;
}
.log::before {
  content: "LOG // RECOVERED"; position: absolute; top: -10px; left: 30px;
  padding: 0 8px; background: var(--bg);
  font: 500 11px var(--mono); letter-spacing: 0.2em; color: var(--ink-faint); font-style: normal;
}
.log cite { display: block; margin-top: 14px; font-size: 14px; font-style: normal; color: var(--ink-faint); }

/* Parts */
.parts { width: var(--wrap); margin: 0 auto; padding: 60px 0 110px; border-top: 1px solid var(--line); }
.parts__head { padding-top: 60px; }
.parts__grid {
  list-style: none; margin: 50px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px;
}
.parts__grid li {
  padding: 28px 24px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.parts__grid li:hover { border-color: rgba(255, 198, 107, 0.4); transform: translateY(-3px); }
.parts__icon { display: block; font-size: 26px; color: var(--amber); margin-bottom: 14px; line-height: 1; }
.parts__grid p { color: var(--ink-dim); margin-top: 8px; font-size: 16px; }
.parts__more { margin-top: 26px; font: italic 15px var(--mono); color: var(--ink-faint); }

/* Trail */
.trail { width: var(--wrap); margin: 0 auto; padding: 60px 0 40px; border-top: 1px solid var(--line); }
.trail__head { padding-top: 60px; }
.stops { list-style: none; margin: 70px 0 0; padding: 0; display: grid; gap: 80px; }
.stop { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: center; }
.stop:nth-child(even) { grid-template-columns: 1fr 1.5fr; }
.stop:nth-child(even) .stop__img { order: 2; }
.stop__img { display: block; overflow: hidden; border-radius: 6px; border: 1px solid var(--line); cursor: zoom-in; }
.stop__img img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; transition: transform 0.6s ease, filter 0.4s ease; filter: brightness(0.9); }
.stop__img:hover img { transform: scale(1.04); filter: brightness(1.05); }
.stop__num { display: block; font: 500 14px var(--mono); color: var(--amber); letter-spacing: 0.15em; margin-bottom: 10px; }
.stop h3 { font-size: clamp(26px, 3vw, 34px); }
.stop p { color: var(--ink-dim); margin-top: 12px; font-size: 18px; max-width: 34ch; }

/* Screenshot strip */
.strip { width: var(--wrap); margin: 80px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.strip button { overflow: hidden; border-radius: 6px; border: 1px solid var(--line); cursor: zoom-in; }
.strip img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; transition: transform 0.6s ease; }
.strip button:hover img { transform: scale(1.04); }

/* Beyond */
.beyond {
  position: relative; margin-top: 130px; min-height: 90svh;
  display: grid; place-items: center; text-align: center;
  overflow: hidden; isolation: isolate;
}
.beyond__bg {
  position: absolute; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  filter: brightness(0.5) blur(1px);
}
.beyond::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(13, 15, 18, 0.35) 30%, rgba(13, 15, 18, 0.35) 70%, var(--bg) 100%);
}
.beyond__inner { width: var(--wrap); padding: 100px 0; display: flex; flex-direction: column; align-items: center; }
.beyond__title {
  font-size: clamp(44px, 8vw, 96px); font-weight: 800; letter-spacing: 0.02em;
  background: linear-gradient(180deg, #ffffff 0%, #b9c6dd 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 0 60px rgba(150, 190, 255, 0.15);
}
.beyond .lede { margin-left: auto; margin-right: auto; }
.beyond__lines { margin-top: 44px; display: grid; gap: 10px; font: 500 clamp(18px, 2.4vw, 24px) var(--mono); }
.beyond__lines span { opacity: 0; transform: translateY(8px); transition: opacity 1s ease, transform 1s ease; }
.beyond__inner.is-in .beyond__lines span { opacity: 1; transform: none; }
.beyond__inner.is-in .beyond__lines span:nth-child(2) { transition-delay: 0.7s; }
.beyond__inner.is-in .beyond__lines span:nth-child(3) { transition-delay: 1.4s; color: var(--amber); }
.beyond__hush { margin-top: 40px; font: italic 14px var(--mono); color: var(--ink-faint); }

/* Promise */
.promise { width: var(--wrap); margin: 0 auto; padding: 110px 0; text-align: center; }
.promise__big { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 28px; }
.promise__big li { font: 800 clamp(30px, 5vw, 54px)/1.15 var(--head); }
.promise__big li:nth-child(3) { color: var(--amber); }
.promise .lede { margin-left: auto; margin-right: auto; }
.facts { list-style: none; margin: 40px 0 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.facts li { padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; font: 500 14px var(--mono); color: var(--ink-dim); }

/* Final */
.final {
  width: var(--wrap); margin: 0 auto 60px; padding: 80px 32px; text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(255, 198, 107, 0.12), transparent 70%), var(--bg-2);
  border: 1px solid var(--line); border-radius: 10px;
}
.final .lede, .final .cta { margin-left: auto; margin-right: auto; justify-content: center; }

.footer { padding: 30px 16px 50px; text-align: center; color: var(--ink-faint); font-size: 14px; }

/* Lightbox */
.lightbox { padding: 0; border: 0; background: transparent; max-width: 96vw; max-height: 92vh; }
.lightbox::backdrop { background: rgba(5, 6, 8, 0.92); }
.lightbox img { max-width: 96vw; max-height: 92vh; border-radius: 4px; }
.lightbox__close { position: fixed; top: 14px; right: 20px; font-size: 38px; color: var(--ink); line-height: 1; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.is-in { opacity: 1; transform: none; }

@media (max-width: 760px) {
  .stop, .stop:nth-child(even) { grid-template-columns: 1fr; gap: 20px; }
  .stop:nth-child(even) .stop__img { order: 0; }
  .stops { gap: 56px; }
  .strip { grid-template-columns: 1fr; }
  .wake { padding: 90px 0 70px; }
  .log { padding: 24px 20px; }
  .final { padding: 60px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__bg, .hero__scroll { animation: none; }
  .reveal, .beyond__lines span { opacity: 1; transform: none; transition: none; }
}

/* ---------------------------------------------------------------------------
   Shared by both pages: top nav (The Builder's Apprentice · Silent Inheritance)
   --------------------------------------------------------------------------- */
.nav {
  position: absolute; top: 0; left: 0; right: 0; z-index: 2;
  display: flex; justify-content: center; gap: 8px 28px; flex-wrap: wrap;
  padding: 22px 16px 0;
  font: 500 13px var(--mono); letter-spacing: 0.12em; text-transform: uppercase;
}
.nav a { color: var(--ink-dim); text-decoration: none; padding: 6px 0; border-bottom: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease; }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--amber); border-bottom-color: rgba(255, 198, 107, 0.5); }

/* Beyond (BA page) — teaser image + link to the Silent Inheritance page */
.beyond__pic {
  display: block; margin: 44px auto 0; width: min(760px, 100%);
  border-radius: 6px; border: 1px solid var(--line); overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.9);
}
.beyond__pic img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.beyond__link { display: inline-block; margin-top: 18px; font: 500 15px var(--mono); color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--line); }
.beyond__link:hover { color: var(--ink); border-bottom-color: var(--ink-dim); }

/* ---------------------------------------------------------------------------
   Silent Inheritance page (silent-inheritance/index.html)
   --------------------------------------------------------------------------- */
.si-hero__eyebrow { font: 600 13px/1 var(--mono); text-transform: uppercase; letter-spacing: 0.22em; color: var(--ink-dim); margin-bottom: 20px; }
.si-hero__title {
  font-size: clamp(46px, 9vw, 112px); font-weight: 800; letter-spacing: 0.02em; line-height: 1;
  background: linear-gradient(180deg, #ffffff 0%, #b9c6dd 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 8px 30px rgba(0, 0, 0, 0.6));
}
.si-hero .hero__bg { filter: saturate(0.9) brightness(0.65); }

/* Where the trail goes */
.trail-go { width: var(--wrap); margin: 0 auto; padding: 120px 0 60px; }
.trail-go__lead { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; margin-top: 60px; }
.trail-go__lead .stop__img img { aspect-ratio: 16 / 9; }
.trail-go__lead p { color: var(--ink-dim); font-size: 18px; }
.trail-go__lead p + p { margin-top: 16px; }
.worlds { list-style: none; margin: 70px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.worlds li { background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; transition: border-color 0.25s ease, transform 0.25s ease; }
.worlds li:hover { border-color: rgba(255, 198, 107, 0.4); transform: translateY(-3px); }
.worlds button { display: block; width: 100%; cursor: zoom-in; }
.worlds img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; filter: brightness(0.92); }
.worlds__text { padding: 22px 22px 26px; }
.worlds__kind { display: block; font: 500 12px var(--mono); letter-spacing: 0.15em; text-transform: uppercase; color: var(--amber); margin-bottom: 8px; }
.worlds h3 { font-size: 26px; }
.worlds p { color: var(--ink-dim); margin-top: 8px; font-size: 16px; }
.worlds__reach { margin-top: 26px; font: italic 15px var(--mono); color: var(--ink-faint); }

/* From machine to builder — the five eras */
.eras { width: var(--wrap); margin: 0 auto; padding: 60px 0 60px; border-top: 1px solid var(--line); }
.eras__head { padding-top: 60px; }
.eras__list { list-style: none; counter-reset: era; margin: 60px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.eras__list li { counter-increment: era; padding: 24px 20px 26px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; position: relative; }
.eras__list li::before { content: "0" counter(era); display: block; font: 500 14px var(--mono); color: var(--amber); letter-spacing: 0.15em; margin-bottom: 12px; }
.eras__list li:last-child { border-color: rgba(255, 198, 107, 0.4); background: radial-gradient(ellipse at 50% 0%, rgba(255, 198, 107, 0.1), transparent 70%), var(--bg-2); }
.eras__list h3 { font-size: 22px; }
.eras__list p { color: var(--ink-dim); margin-top: 8px; font-size: 15px; }
.eras__pics { margin-top: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.eras__pics figure { margin: 0; }
.eras__pics button { display: block; overflow: hidden; border-radius: 6px; border: 1px solid var(--line); cursor: zoom-in; width: 100%; }
.eras__pics img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; transition: transform 0.6s ease; }
.eras__pics button:hover img { transform: scale(1.04); }
.eras__pics figcaption { margin-top: 10px; font: 500 13px var(--mono); color: var(--ink-faint); letter-spacing: 0.08em; }

/* Neighbors, not enemies */
.neighbors { width: var(--wrap); margin: 0 auto; padding: 60px 0 100px; border-top: 1px solid var(--line); }
.neighbors__grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: center; padding-top: 60px; }
.neighbors__grid .stop__img { order: 2; }
.neighbors .lede { margin-top: 20px; }
.lineages { list-style: none; margin: 30px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.lineages li { padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; font: 500 14px var(--mono); color: var(--ink-dim); }
.neighbors__motto { margin-top: 30px; font: italic 16px var(--mono); color: var(--amber); }

/* Build. Paint. Test drive. */
.forge { width: var(--wrap); margin: 0 auto; padding: 60px 0 110px; border-top: 1px solid var(--line); }
.forge__head { padding-top: 60px; }
.forge__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; margin-top: 50px; }
.forge__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.forge__list li { padding: 22px 22px; background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; }
.forge__list h3 { font-size: 20px; }
.forge__list p { color: var(--ink-dim); margin-top: 6px; font-size: 15px; }
.forge__hazard { margin-top: 40px; color: var(--ink-dim); max-width: 60ch; }
.forge__hazard strong { color: var(--ink); font-weight: 600; }

/* Start with The Builder's Apprentice (cross-link to the BA page) */
.start { width: var(--wrap); margin: 0 auto; padding: 80px 32px; text-align: center; background: var(--bg-2); border: 1px solid var(--line); border-radius: 10px; }
.start .lede, .start .cta { margin-left: auto; margin-right: auto; justify-content: center; }
.start__link { font: 500 15px var(--mono); color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--line); }
.start__link:hover { color: var(--ink); border-bottom-color: var(--ink-dim); }

@media (max-width: 900px) {
  .eras__list { grid-template-columns: repeat(2, 1fr); }
  .eras__list li:last-child { grid-column: 1 / -1; }
  .worlds { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav { padding-top: 16px; }
  .trail-go { padding-top: 90px; }
  .trail-go__lead, .neighbors__grid, .forge__grid { grid-template-columns: 1fr; gap: 24px; }
  .neighbors__grid .stop__img { order: 0; }
  .eras__pics { grid-template-columns: 1fr; }
  .eras__list { grid-template-columns: 1fr; }
  .start { padding: 60px 20px; }
}

/* ---------------------------------------------------------------------------
   BA page, paid edition (2026-10-10): "Ninety minutes, honestly.", the free
   browser-demo block, the ghost button, the final-CTA side link, play/ placeholder
   --------------------------------------------------------------------------- */
.btn--ghost, .btn--ghost:hover {
  color: var(--ink); background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); transform: translateY(-2px); }
.btn--ghost.btn--soon, .btn--ghost.btn--soon:hover { color: var(--amber); background: rgba(255, 198, 107, 0.08); box-shadow: inset 0 0 0 1px rgba(255, 198, 107, 0.45); transform: none; }

/* Ninety minutes, honestly. */
.honest { width: var(--wrap); margin: 110px auto 0; padding: 60px 0 0; border-top: 1px solid var(--line); }
.honest h2 { padding-top: 60px; }
.honest__then { margin-top: 44px; padding: 26px 30px; max-width: 640px; background: var(--bg-2); border-left: 3px solid var(--amber); border-radius: 0 6px 6px 0; }
.honest__then h3 { font-size: clamp(24px, 3vw, 30px); color: var(--amber); }
.honest__then p { color: var(--ink-dim); margin-top: 10px; font-size: 17px; }

/* Play the first zone free. */
.demo { width: var(--wrap); margin: 90px auto 0; }
.demo__inner {
  padding: 70px 32px; text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(255, 198, 107, 0.12), transparent 70%), var(--bg-2);
  border: 1px solid var(--line); border-radius: 10px;
}
.demo .lede, .demo .cta { margin-left: auto; margin-right: auto; justify-content: center; }

/* Final CTA side link */
.final__link { font: 500 15px var(--mono); color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--line); }
.final__link:hover { color: var(--ink); border-bottom-color: var(--ink-dim); }

/* play/ placeholder (replaced by Unity's WebGL index.html later) */
.play { min-height: 100svh; display: grid; place-items: center; text-align: center; padding: 100px 16px 60px; }
.play__inner { width: var(--wrap); max-width: 680px; display: flex; flex-direction: column; align-items: center; }
.play__inner .lede { margin-left: auto; margin-right: auto; }
.play__links { margin-top: 34px; display: flex; flex-wrap: wrap; justify-content: center; gap: 14px 28px; }
.play__links a { font: 500 15px var(--mono); color: var(--ink-dim); text-decoration: none; border-bottom: 1px solid var(--line); }
.play__links a:hover { color: var(--ink); border-bottom-color: var(--ink-dim); }

@media (max-width: 760px) {
  .honest { margin-top: 80px; }
  .honest__then { padding: 22px 20px; }
  .demo { margin-top: 70px; }
  .demo__inner { padding: 56px 20px; }
}

/* Keyboard focus (2026-10-19 review): the browser default ring is hard to see on the dark ground. */
a:focus-visible, button:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }