:root {
  color-scheme: dark;
  --page: #15140f;
  --surface: #201e17;
  --surface-2: #28251b;
  --line: #514b36;
  --text: #f5f2e8;
  --muted: #b9b39f;
  --mustard: #e7aa12;
  --yellow: #f4c128;
  --red: #d64434;
  --mono: "DejaVu Sans Mono", "SFMono-Regular", Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 28px 90px rgb(0 0 0 / 48%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 300px; margin: 0; background: linear-gradient(rgb(255 255 255 / 2%) 1px, transparent 1px), linear-gradient(90deg, rgb(255 255 255 / 2%) 1px, transparent 1px), var(--page); background-size: 46px 46px; color: var(--text); font-family: var(--sans); line-height: 1.55; text-rendering: optimizeLegibility; }
a { color: var(--yellow); text-underline-offset: .2em; }
button, a { -webkit-tap-highlight-color: transparent; }
.wrap { width: min(1260px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 9px 13px; transform: translateY(-160%); background: #fff; color: #111; font-family: var(--mono); }
.skip-link:focus { transform: none; }
.scroll-meter { position: fixed; z-index: 80; inset: 0 0 auto; height: 3px; }
.scroll-meter span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--mustard), var(--yellow)); }
.site-header { position: sticky; z-index: 30; top: 0; border-bottom: 1px solid rgb(255 255 255 / 8%); background: rgb(21 20 15 / 89%); backdrop-filter: blur(16px); }
.topbar { display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 24px; }
.prompt-brand { display: inline-flex; align-items: stretch; color: #fff; font-family: var(--mono); font-size: .78rem; font-weight: 700; line-height: 34px; text-decoration: none; white-space: nowrap; }
.seg { display: inline-block; padding: 0 17px 0 16px; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%, 10px 50%); }
.seg:first-child { padding-left: 11px; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%); }
.seg + .seg { margin-left: -7px; }
.seg-mark { background: #70540d; }.seg-dir { background: #a5790d; }.seg-mode { background: #b13c2e; }
.nav-links { display: flex; gap: 24px; font-family: var(--mono); font-size: .72rem; }
.nav-links a { color: var(--muted); text-decoration: none; }.nav-links a:hover { color: var(--text); }
.hero { overflow: hidden; padding-top: clamp(64px, 9vw, 120px); }
.hero-copy { max-width: 920px; margin-bottom: clamp(46px, 7vw, 78px); }
.kicker { margin: 0 0 12px; color: var(--yellow); font-family: var(--mono); font-size: .72rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.kicker span { color: var(--red); }
h1, h2 { font-family: var(--mono); }
h1 { margin: 0; font-size: clamp(3.2rem, 8vw, 7.2rem); line-height: .88; letter-spacing: -.075em; }
h1 span { color: var(--mustard); }
.lede { max-width: 800px; margin: 30px 0; color: #d1ccbb; font-size: clamp(1rem, 1.6vw, 1.18rem); }
.hero-actions, .end-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.button { display: inline-flex; padding: 12px 17px; border: 1px solid var(--mustard); border-radius: 4px; background: rgb(231 170 18 / 10%); color: var(--text); font-family: var(--mono); font-size: .76rem; font-weight: 700; text-decoration: none; }
.button:hover { border-color: var(--yellow); }
.text-link { font-family: var(--mono); font-size: .72rem; text-decoration: none; }.text-link:hover { text-decoration: underline; }
figure { margin: 0; } figure button { display: block; width: 100%; margin: 0; padding: 0; border: 0; background: none; cursor: zoom-in; } figure img { display: block; width: 100%; height: 100%; object-fit: cover; }
.parts-hero { width: min(1600px, calc(100% - 40px)); margin-inline: auto; overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); box-shadow: var(--shadow); }
.parts-hero button { overflow: hidden; }.parts-hero img { height: auto; }
.parts-hero figcaption, .media-card figcaption { display: flex; justify-content: space-between; gap: 16px; padding: 11px 14px; border-top: 1px solid var(--line); color: var(--muted); font-family: var(--mono); font-size: .67rem; }
.parts-hero figcaption span:first-child, .media-card figcaption span { color: var(--yellow); }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(60px, 9vw, 110px); border-block: 1px solid var(--line); }
.facts div { padding: 22px clamp(12px, 2vw, 26px); }.facts div + div { border-left: 1px solid var(--line); }
.facts span { display: block; color: var(--muted); font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; }.facts strong { font-family: var(--mono); font-size: .84rem; }
.section { padding: clamp(82px, 11vw, 140px) 0; scroll-margin-top: 66px; }
.assembly-section, .detail-section, .final-section { border-block: 1px solid var(--line); background: rgb(32 30 23 / 72%); }
.section-heading { max-width: 820px; margin-bottom: clamp(40px, 6vw, 68px); }
.section-heading h2 { margin: 0; font-size: clamp(2.1rem, 5vw, 4.5rem); line-height: 1; letter-spacing: -.06em; }
.section-heading > p:last-child { max-width: 730px; margin: 21px 0 0; color: var(--muted); font-size: 1.02rem; }
.media-card { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: var(--surface); box-shadow: var(--shadow); }
.media-card button { aspect-ratio: 4 / 3; overflow: hidden; }.media-card.portrait button { aspect-ratio: 3 / 4; }.media-card.wide button { aspect-ratio: 16 / 7; }
.inventory-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 20px; }.inventory-grid .wide { grid-column: span 2; }.inventory-grid .portrait { grid-row: span 2; }
.assembly-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 20px; }.assembly-grid .portrait { grid-row: span 2; }
.check-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }.check-grid .portrait { grid-row: span 2; }
.detail-grid { display: grid; grid-template-columns: 1fr .78fr .78fr; align-items: start; gap: 20px; }
.pre-grid { display: grid; grid-template-columns: .75fr 1.25fr; align-items: end; gap: 20px; margin-bottom: 60px; }
.process-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }.process-strip .media-card { box-shadow: none; }
.final-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 20px; }.final-grid figure:last-child { grid-column: 1 / -1; }.final-grid figure:last-child button { aspect-ratio: 16 / 9; }
.end-actions { justify-content: center; margin-top: 58px; }
.site-footer { display: flex; min-height: 104px; align-items: center; justify-content: space-between; gap: 24px; color: var(--muted); font-family: var(--mono); font-size: .7rem; }.site-footer a { text-decoration: none; }
.lightbox { width: min(95vw, 1600px); max-width: none; max-height: 94vh; padding: 48px 12px 12px; border: 1px solid var(--line); border-radius: 6px; background: #090906; color: var(--text); box-shadow: 0 30px 100px #000; }.lightbox::backdrop { background: rgb(0 0 0 / 88%); backdrop-filter: blur(5px); }.lightbox img { display: block; width: auto; max-width: 100%; height: auto; max-height: calc(94vh - 90px); margin: auto; object-fit: contain; }.lightbox p { margin: 9px 4px 0; color: var(--muted); font-family: var(--mono); font-size: .68rem; text-align: center; }.lightbox-close { position: absolute; top: 10px; right: 12px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); color: var(--text); font-family: var(--mono); cursor: pointer; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .facts { grid-template-columns: repeat(2, 1fr); }.facts div:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }.facts div:nth-child(4) { border-top: 1px solid var(--line); }
  .inventory-grid, .assembly-grid, .check-grid, .detail-grid, .pre-grid, .process-strip, .final-grid { grid-template-columns: repeat(2, 1fr); }
  .inventory-grid .portrait, .assembly-grid .portrait, .check-grid .portrait { grid-row: auto; }
  .inventory-grid .wide, .final-grid figure:last-child { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
  .wrap { width: min(100% - 24px, 1260px); }.site-header { position: relative; }.topbar { min-height: 60px; }.seg-mode { display: none; }.hero { padding-top: 50px; }
  .parts-hero { width: calc(100% - 24px); }.parts-hero button { aspect-ratio: 16 / 7; }.parts-hero img { height: 100%; object-fit: cover; }
  .parts-hero figcaption, .media-card figcaption { display: block; }.parts-hero figcaption span, .media-card figcaption span { display: block; }
  .facts div { padding: 16px 10px; }
  .inventory-grid, .assembly-grid, .check-grid, .detail-grid, .pre-grid, .process-strip, .final-grid { grid-template-columns: 1fr; }
  .inventory-grid .wide, .final-grid figure:last-child { grid-column: auto; }.media-card.wide button, .final-grid figure:last-child button { aspect-ratio: 4 / 3; }
  .pre-grid { margin-bottom: 44px; }.site-footer { display: block; padding: 30px 0; }.site-footer span { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }