:root {
  --accent: #e6b56b;
  --accent-2: #e8d3a3;
  --accent-ink: #211707;
  --accent-soft: rgba(230, 181, 107, .1);
  --glow: rgba(230, 181, 107, .22);
}
[data-theme="light"] {
  --accent: #886021;
  --accent-2: #746331;
  --accent-ink: #fff;
  --accent-soft: rgba(136, 96, 33, .08);
}
.site-header .wrap { gap: 20px; }
.site-nav { gap: 22px; }
.hero { padding: clamp(58px, 8vw, 110px) 0 56px; }
.hero-top { display: grid; grid-template-columns: 1.3fr 1fr; align-items: end; gap: 36px; }
.hero h1 { font-size: clamp(48px, 7.2vw, 92px); }
.hero .lede { margin: 0; max-width: 440px; }
.hero .actions { margin-top: 24px; }
.drawing { margin: 46px 0 0; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-lg); overflow: hidden; }
.drawing-top { padding: 18px 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; border-bottom: 1px solid var(--line); color: var(--muted); font: 11px/1.5 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }
.drawing svg { width: 100%; height: auto; }
.overview-mobile { display: none; }
.drawing figcaption { padding: 16px 24px; color: var(--muted); border-top: 1px solid var(--line); font-size: 13px; }
.drawing figcaption p { margin: 0; }
.technical { fill: var(--text); font: 14px var(--font-mono); }
.technical-small { fill: var(--muted); font: 11px var(--font-mono); }
.hull { fill: var(--surface-3); stroke: var(--accent); stroke-width: 1.4; }
.chassis { fill: var(--text-2); }
.glass { fill: var(--bg); stroke: var(--text-2); stroke-width: 1; }
.wheel { fill: var(--bg); stroke: var(--muted); stroke-width: 2; }
.hub { fill: var(--surface-3); stroke: var(--text-2); stroke-width: 1; }
.dim-line { stroke: var(--accent); stroke-width: .8; fill: none; }
.ground { stroke: var(--line-strong); stroke-width: 1; }
.secondary { stroke: var(--muted); stroke-width: 1; fill: none; }
.diagram-grid { stroke: var(--line); stroke-width: .5; }
.concepts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 24px; }
.concepts article { display: flex; flex-direction: column; padding: 30px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); }
.concepts .number { color: var(--accent); font: 12px var(--font-mono); }
.concepts h2 { margin: 22px 0 12px; font-size: clamp(26px, 3vw, 38px); font-weight: 550; letter-spacing: -.035em; line-height: 1.1; }
.concepts p { color: var(--text-2); margin: 0 0 18px; max-width: 480px; }
.concepts a { margin-top: auto; font-size: 14px; }
.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 10px 0 24px; padding: 22px 0; border-block: 1px solid var(--line); }
.specs dt { font-size: 12px; color: var(--muted); margin-bottom: 5px; }
.specs dd { margin: 0; font: 500 21px/1.25 var(--font-mono); }
.note { border-left: 2px solid var(--accent); padding: 0 0 0 18px; color: var(--text-2); font-size: 15px; margin: 24px 0; }
.note p { margin: 0; }
.section-head { margin-bottom: 36px; }
.section-head .headline { font-size: clamp(34px, 4.4vw, 58px); max-width: 720px; }
.content-split { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(26px, 6vw, 80px); align-items: start; }
.content-split h3 { font-size: 22px; margin: 0 0 14px; letter-spacing: -.02em; font-weight: 550; }
.content-split p { color: var(--text-2); margin: 0 0 18px; }
.calc { padding: 28px; border-radius: var(--r-lg); border: 1px solid var(--line-strong); background: var(--surface); }
.calc h3 { font-size: 20px; margin: 0 0 8px; }
.calc .fine { margin: 0 0 20px; }
.calc-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 24px; }
.calc label { display: block; font-size: 13px; color: var(--text-2); }
.calc input, .calc select { display: block; width: 100%; padding: 10px 12px; margin-top: 8px; border: 1px solid var(--line-strong); background: var(--bg); border-radius: var(--r-sm); font: 15px var(--font-mono); }
.calc .seg { margin-top: 10px; border-radius: 12px; }
.calc .seg button { font-size: 12px; border-radius: 8px; }
.calc-output { padding: 20px 0 0; margin-top: 24px; border-top: 1px solid var(--line); }
.calc-output strong { display: block; font: 500 34px/1.2 var(--font-mono); letter-spacing: -.04em; }
.calc-output p { margin: 8px 0 0; font-size: 14px; color: var(--text-2); }
.calc-output [data-fail="true"] { color: var(--danger); }
.calc-output [data-fail="false"] { color: var(--ok); }
.calculator-only { display: none; }
.js .calculator-only { display: block; }
.table-wrap { border: 1px solid var(--line-strong); border-radius: var(--r-md); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; text-align: left; }
caption { text-align: left; padding: 18px; color: var(--text-2); font-size: 13px; background: var(--surface); }
th, td { padding: 17px 20px; vertical-align: top; border-bottom: 1px solid var(--line); }
thead { color: var(--muted); background: var(--surface); }
th { font-weight: 550; }
td { color: var(--text-2); }
tr:last-child td, tr:last-child th { border-bottom: 0; }
td a { color: var(--accent); text-underline-offset: 4px; }
td small, th small { display: block; color: var(--muted); margin-top: 5px; font-weight: 400; font-size: 12px; }
.market-table { min-width: 650px; }
.axle-figure { margin: 28px 0; }
.axle-figure svg { min-width: 680px; }
.axle-figure .scroll-x { padding: 22px 12px 0; }
.figure-controls { padding: 18px 24px 0; }
.figure-controls button { font-size: 12px; }
.layout-stats { display: flex; flex-wrap: wrap; gap: 20px 40px; padding: 22px 24px; border-top: 1px solid var(--line); }
.layout-stats b { font: 500 21px var(--font-mono); display: block; }
.layout-stats span { color: var(--muted); font-size: 12px; }
.requirements { list-style: none; padding: 0; margin: 0; counter-reset: requirement; }
.requirements li { padding: 20px 0 20px 40px; border-bottom: 1px solid var(--line); position: relative; color: var(--text-2); font-size: 15px; counter-increment: requirement; }
.requirements li::before { content: "0" counter(requirement); position: absolute; left: 0; top: 22px; color: var(--accent); font: 11px var(--font-mono); }
.requirements b { display: block; color: var(--text); margin-bottom: 5px; font-weight: 550; }
.sources { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 32px; margin: 30px 0 0; padding: 0; list-style: none; }
.sources a { font-size: 14px; color: var(--text-2); text-underline-offset: 4px; }
.sources span { font-size: 12px; color: var(--muted); display: block; margin-top: 3px; }
.status-strip { margin-top: 32px; }
.faq { margin-top: 56px; }
.site-footer .wrap { align-items: center; }
.site-footer p { margin: 0; }
@media (max-width: 860px) {
  .hero-top, .content-split { grid-template-columns: 1fr; }
  .hero .lede { max-width: 620px; }
}
@media (max-width: 640px) {
  .concepts, .sources { grid-template-columns: 1fr; }
  .concepts article, .calc { padding: 24px; }
  .calc-fields { gap: 14px; }
  .drawing-top { padding: 16px; }
  .overview-drawing { display: none; }
  .overview-mobile { display: block; }
  .hero { padding-top: 44px; }
  .band { padding: 64px 0; }
  .site-nav { display: flex; gap: 15px; }
  .site-nav a { font-size: 12px; }
  .site-nav a:last-child { display: none; }
  .site-header .wrap { gap: 12px; }
  .brand small { display: none; }
  .header-actions { margin-left: 0; }
}
@media (max-width: 380px) {
  .site-nav { gap: 10px; }
  .brand { font-size: 17px; }
  .site-header .wrap { gap: 10px; }
  .calc-fields { grid-template-columns: 1fr; }
}

/* Visual archive and systems edition. */
.hero { padding: clamp(40px, 5vw, 76px) 0 44px; }
.hero-top { grid-template-columns: .9fr 1.25fr; align-items: center; gap: 38px; }
.hero h1 { font-size: clamp(46px, 5.2vw, 68px); line-height: 1; }
.hero .lede { margin-top: 22px; max-width: 460px; font-size: 18px; }
.hero .eyebrow { font-size: 10px; }
.hero .actions { gap: 10px; }
.hero .btn { font-size: 13px; padding-inline: 18px; }
.hero-visual { margin: 0; border: 1px solid var(--line-strong); border-radius: var(--r-lg); overflow: hidden; background: #b7babc; }
.hero-visual img { width: 100%; height: auto; }
.hero-visual figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 14px 18px; background: var(--surface); color: var(--muted); font: 10px/1.4 var(--font-mono); }
.hero-facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 42px; border-block: 1px solid var(--line-strong); }
.hero-facts > div { padding: 22px 18px; border-right: 1px solid var(--line); }
.hero-facts > div:first-child { padding-left: 0; }
.hero-facts > div:last-child { border-right: 0; }
.hero-facts span { display: block; font: 10px/1.4 var(--font-mono); color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.hero-facts b { display: block; margin: 9px 0 4px; font-size: clamp(24px, 3vw, 36px); letter-spacing: -.04em; font-weight: 550; }
.hero-facts small { display: block; font-size: 12px; color: var(--text-2); }
.site-nav { display: flex; gap: 22px; }
.site-nav a:last-child { display: block; }
.design-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.design-gallery figure { margin: 0; overflow: hidden; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-md); }
.design-gallery .gallery-wide { grid-column: span 2; }
.design-gallery a { display: block; overflow: hidden; background: #b7babc; }
.design-gallery a:focus-visible { outline-offset: -4px; }
.design-gallery img { width: 100%; height: clamp(220px, 25vw, 340px); object-fit: contain; transition: transform .25s var(--ease); }
.design-gallery a:hover img { transform: scale(1.025); }
.design-gallery figcaption { padding: 16px 18px; }
.design-gallery figcaption b { display: block; font-size: 16px; font-weight: 550; letter-spacing: -.015em; }
.design-gallery figcaption span { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.archive-film { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: center; margin-top: 40px; }
.archive-film h3, .zoning-strip h3 { margin: 0 0 14px; font-size: 28px; font-weight: 550; letter-spacing: -.03em; }
.archive-film p, .zoning-strip p { color: var(--text-2); }
.archive-film video { display: block; width: 100%; aspect-ratio: 832/480; border-radius: var(--r-md); background: var(--surface); border: 1px solid var(--line-strong); }
.archive-film .eyebrow { font-size: 10px; }
.protection-layout { display: grid; grid-template-columns: 1.15fr 1fr; gap: 42px; align-items: start; }
.system-drawing { margin: 0; border: 1px solid var(--line-strong); background: var(--surface); border-radius: var(--r-lg); overflow: hidden; }
.system-drawing > svg { width: 100%; height: auto; }
.system-drawing figcaption { border-top: 1px solid var(--line); padding: 18px 22px; color: var(--muted); font-size: 12px; }
.system-drawing .technical { font-size: 13px; }
.system-drawing .technical-small { font-size: 10px; }
.weather-layer { fill: var(--surface-3); stroke: var(--muted); stroke-width: 2; }
.armor-layer { fill: none; stroke: var(--accent); stroke-width: 14; stroke-linecap: round; }
.shield-layer { fill: var(--surface); stroke: var(--ok); stroke-width: 3; }
.inside-layer { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1; }
.equipment-layer { fill: var(--surface-3); stroke: var(--ok); stroke-width: 1; }
.armor-zone { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 4; }
.feature-stack article { border-bottom: 1px solid var(--line); padding: 0 0 24px; margin-bottom: 24px; }
.feature-stack article:last-child { margin: 0; }
.feature-index { display: block; color: var(--accent); font: 10px/1.4 var(--font-mono); text-transform: uppercase; letter-spacing: .06em; }
.feature-stack h3, .autonomy-copy h3 { margin: 10px 0 12px; font-size: 23px; font-weight: 550; letter-spacing: -.02em; }
.feature-stack p { color: var(--text-2); font-size: 15px; margin: 0; }
.feature-stack .fine { margin-top: 12px; color: var(--muted); font-size: 12px; }
.zoning-strip { display: grid; grid-template-columns: .7fr 1.3fr; align-items: center; gap: 40px; margin-top: 50px; padding: 30px; border: 1px solid var(--line-strong); border-radius: var(--r-lg); background: var(--surface); }
.zoning-strip p { margin: 0; font-size: 14px; }
.zoning-strip .eyebrow { margin-bottom: 14px; font-size: 10px; }
.zoning-strip svg { width: 100%; height: auto; }
.autonomy-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 44px; align-items: start; }
.sensor-cone { fill: var(--accent-soft); stroke: var(--accent); stroke-width: .7; stroke-dasharray: 5 5; }
.lidar-range { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1; stroke-dasharray: 5 5; }
.lidar-marker { fill: var(--accent); stroke: var(--bg); stroke-width: 2; }
.camera-marker { fill: var(--text); stroke: var(--bg); stroke-width: 1; }
.radar-marker { fill: var(--ok); stroke: var(--bg); stroke-width: 1; }
.gnss-marker { fill: var(--text-2); }
.autonomy-copy > p { font-size: 15px; color: var(--text-2); }
.integration-note { border-left: 2px solid var(--accent); padding: 2px 0 2px 18px; margin: 26px 0; font-size: 14px; }
.integration-note p { color: var(--text-2); margin: 8px 0 0; }
.system-list { list-style: none; padding: 0; margin: 0; }
.system-list li { display: grid; grid-template-columns: 135px 1fr; gap: 16px; padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.system-list b { font-weight: 550; }
.system-list span { color: var(--text-2); }
.control-flow { display: flex; align-items: center; gap: 18px; padding: 26px; margin: 28px 0; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-md); }
.control-flow div { flex: 1; }
.control-flow small { display: block; font: 10px/1.4 var(--font-mono); text-transform: uppercase; color: var(--muted); }
.control-flow b { display: block; margin-top: 9px; font-size: 14px; font-weight: 550; }
.control-flow > span { color: var(--accent); }
.capability-stages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 30px 0; }
.capability-stages article { border-top: 2px solid var(--accent); padding: 20px 0; }
.capability-stages span { color: var(--muted); font: 10px/1.5 var(--font-mono); letter-spacing: .04em; }
.capability-stages h3 { font-size: 21px; font-weight: 550; letter-spacing: -.02em; margin: 12px 0 10px; }
.capability-stages p { color: var(--text-2); font-size: 14px; margin: 0; }
.technical-details { border-block: 1px solid var(--line-strong); margin-top: 32px; }
.technical-details > summary { padding: 22px 0; cursor: pointer; font-size: 16px; font-weight: 550; }
.details-body { padding-bottom: 24px; font-size: 14px; color: var(--text-2); }
.details-body .table-wrap { margin-bottom: 24px; }
.details-body table { min-width: 640px; }
.allocation-list { border-top: 1px solid var(--line-strong); }
.allocation-list > div { display: flex; justify-content: space-between; gap: 30px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.allocation-list span { color: var(--text-2); font-size: 15px; max-width: 330px; }
.allocation-list b { font: 500 20px/1.4 var(--font-mono); white-space: nowrap; }
.allocation-list .allocation-total b { color: var(--accent); font-size: 27px; }
.mass-layout { grid-template-columns: 1fr 1fr; gap: 44px; }
.axle-settings { margin-top: 24px; border-top: 1px solid var(--line); }
.axle-settings summary { padding-top: 18px; font-size: 13px; cursor: pointer; }
.mass-meter { display: block; width: 100%; height: 16px; margin: 14px 0; accent-color: var(--accent); }
.mass-axles { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.mass-axles b { display: block; font: 500 20px/1.3 var(--font-mono); }
.mass-axles span { display: block; margin-top: 6px; color: var(--muted); font-size: 11px; }
.vehicle-section { padding-bottom: 70px; }
.vehicle-section .drawing { margin-top: 0; }
.gallery-dialog { width: min(1080px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 16px; border: 1px solid var(--line-strong); border-radius: var(--r-md); background: var(--surface); color: var(--text); }
.gallery-dialog::backdrop { background: rgba(0, 0, 0, .85); }
.gallery-dialog img { width: 100%; max-height: 75dvh; object-fit: contain; }
.gallery-dialog button { display: block; margin: 0 0 14px auto; border: 1px solid var(--line-strong); background: var(--surface-2); padding: 8px 15px; border-radius: var(--r-sm); font-size: 13px; }
.gallery-dialog p { margin: 14px 0 2px; font-size: 13px; color: var(--text-2); }
@media (max-width: 960px) {
  .hero-top { grid-template-columns: 1fr 1.1fr; gap: 24px; }
  .hero h1 { font-size: 55px; }
  .hero .lede { font-size: 16px; }
  .hero .eyebrow { letter-spacing: .05em; }
  .protection-layout, .autonomy-layout { gap: 28px; }
  .site-nav { gap: 16px; }
  .brand small { display: none; }
  .zoning-strip { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 760px) {
  .hero-top, .protection-layout, .autonomy-layout, .archive-film, .mass-layout { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(36px, 10.8vw, 64px); }
  .hero .lede { max-width: 560px; }
  .hero-visual { margin-top: 14px; }
  .hero-facts { grid-template-columns: 1fr 1fr; margin-top: 26px; }
  .hero-facts > div { padding: 18px 12px; }
  .hero-facts > div:nth-child(2) { border-right: 0; }
  .hero-facts > div:nth-child(3) { padding-left: 0; }
  .hero-facts > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .hero-facts b { font-size: 28px; }
  .design-gallery { grid-template-columns: 1fr 1fr; gap: 14px; }
  .design-gallery img { height: auto; aspect-ratio: 832/480; }
  .design-gallery .gallery-wide { grid-column: span 2; }
  .archive-film { gap: 22px; }
  .feature-stack { margin-top: 6px; }
  .control-flow { flex-wrap: wrap; gap: 16px; padding: 22px; }
  .control-flow div { flex: 1 0 80%; }
  .control-flow > span { transform: rotate(90deg); margin-left: 50%; }
  .capability-stages { grid-template-columns: 1fr; gap: 10px; }
  .capability-stages article { padding: 20px 0 10px; }
}
@media (max-width: 640px) {
  html { scroll-padding-top: 116px; }
  .site-header .wrap { height: auto; min-height: 64px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; gap: 8px; }
  .site-nav { display: flex; order: 3; width: 100%; margin: 0; justify-content: space-between; gap: 12px; }
  .site-nav a, .site-nav a:last-child { display: block; font-size: 12px; }
  .header-actions { margin-left: auto; }
  .hero { padding-top: 36px; }
  .hero-visual figcaption { font-size: 9px; }
  .design-gallery { grid-template-columns: 1fr; }
  .design-gallery .gallery-wide { grid-column: auto; }
  .design-gallery figcaption { padding: 14px 16px; }
  .system-list li { grid-template-columns: 1fr; gap: 6px; }
  .zoning-strip { padding: 22px 14px; }
  .zoning-strip > div { padding-inline: 8px; }
  .allocation-list b { font-size: 18px; }
  .allocation-list span { font-size: 13px; }
  .section-head .headline { font-size: 36px; }
}

.hero-line { display: block; white-space: nowrap; }
.system-viewport { overflow-x: auto; scrollbar-width: thin; }
.system-viewport svg { width: 100%; height: auto; }
@media (max-width: 640px) { .system-viewport svg { min-width: 540px; } }

/* Current body variants. */
.variant-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.variant-grid article { padding: 28px; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--r-lg); min-width: 0; }
.variant-grid .variant-primary { border-color: var(--accent); background: var(--accent-soft); }
.variant-grid h3, .pair-goal h3 { font-size: clamp(26px, 3vw, 36px); line-height: 1.1; letter-spacing: -.035em; margin: 20px 0; }
.variant-grid p, .roof-states p, .parking-detail p, .pair-goal p { color: var(--text-2); }
.variant-grid .specs { grid-template-columns: 1fr; }
.variant-grid dd { overflow-wrap: anywhere; }
.roof-states { margin-top: 48px; scroll-margin-top: 100px; }
.roof-states .requirements { list-style: none; }
.roof-states .requirements li { padding-left: 0; }
.roof-states .requirements li::before { content: none; }
.parking-detail { margin-top: 32px; }
.parking-detail a { text-decoration: underline; text-underline-offset: 3px; }
.pair-goal { margin-top: 36px; padding: 28px; border: 1px solid var(--line-strong); border-radius: var(--r-lg); background: var(--surface); }
@media (max-width: 960px) { .variant-grid { grid-template-columns: 1fr; } .variant-grid .specs { grid-template-columns: 1fr 1fr; } }
@media (max-width: 420px) { .variant-grid article, .pair-goal { padding: 22px; } .variant-grid .specs { grid-template-columns: 1fr; } }