:root {
  --bg: #000000; --ink: #EDEDED; --soft: #CFCFCF; --muted: #BDBDBD; --line: #222226; --card: #0E0E10;
  --amber: #FFB547; --amber-soft: #FFD08A; --amber-ink: #1A1206; --ice: #9FD8FF;
  --display: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--display); }
a { color: var(--amber); text-underline-offset: 3px; }
a:hover { color: var(--amber-soft); }
code, kbd { font-family: var(--mono); font-size: .86em; }
kbd { border: 1px solid rgba(255,255,255,.28); border-radius: 4px; padding: 0 5px; font-size: 11px; color: var(--muted); letter-spacing: 0; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible, #view:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
p { margin: 0; }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 10; background: var(--amber); color: var(--amber-ink); padding: 10px 14px; border-radius: 8px; font-weight: 600; }
.skip:focus { top: 12px; }

/* Hero: the render fills the screen, the copy and the controls float on it */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; overflow: hidden; background: #000; }
.stage { position: absolute; inset: 0; }
.stage::after { content: ''; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to bottom, rgba(0,0,0,.55) 0, rgba(0,0,0,0) 110px), linear-gradient(to top, rgba(0,0,0,.78) 0, rgba(0,0,0,0) 46%); }
#view { display: block; width: 100%; height: 100%; touch-action: none; cursor: grab; outline-offset: -3px; }
#view:active { cursor: grabbing; }
#view:focus-visible { outline-offset: -3px; }
.status { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; margin: 0; padding: 24px; text-align: center; color: #F0E7DA; background: #000; z-index: 1; }
.status[hidden] { display: none; }

.top { position: relative; z-index: 2; display: flex; flex-wrap: wrap; gap: 4px 20px; align-items: center; padding: 14px 28px; pointer-events: none; }
.top > * { pointer-events: auto; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: -.01em; flex: 1 1 auto; pointer-events: none; }
.navlink { color: var(--soft); text-decoration: none; font-size: 15px; min-height: 44px; display: inline-flex; align-items: center; }
.navlink:hover { color: #fff; }
.pill-link { min-height: 44px; display: inline-flex; align-items: center; padding: 0 16px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; color: var(--ink); font-size: 14px; text-decoration: none; background: rgba(0,0,0,.45); }
.pill-link:hover { color: #fff; border-color: rgba(255,255,255,.6); }

.hero-body { position: relative; z-index: 2; flex: 1 1 auto; display: flex; flex-wrap: wrap; gap: 24px; padding: 24px 28px 28px; align-items: flex-end; justify-content: space-between; pointer-events: none; }
.hero-copy { flex: 1 1 420px; max-width: 580px; display: flex; flex-direction: column; gap: 14px; text-shadow: 0 1px 12px rgba(0,0,0,.6); }
.hero-copy a { pointer-events: auto; }
h1 { margin: 0; font-weight: 700; font-size: clamp(38px, 4.6vw, 60px); line-height: 1.02; letter-spacing: -.03em; }
.lede { font-size: 17px; line-height: 1.6; color: var(--soft); }
.hud { font: 13px/1.5 var(--mono); color: var(--muted); min-height: 1.5em; font-variant-numeric: tabular-nums; }

/* Floating control panel */
.panel { pointer-events: auto; flex: 0 1 340px; min-width: 290px; background: rgba(18,18,22,.78); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.14); border-radius: 18px; padding: 18px; display: flex; flex-direction: column; gap: 14px; font-size: 14px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend, .lab { padding: 0; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
legend { margin-bottom: 8px; }
legend kbd, .lab kbd { text-transform: none; margin-left: 4px; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.seg legend { grid-column: 1 / -1; }
.seg button { min-height: 44px; font: inherit; font-size: 14px; line-height: 1.2; color: var(--ink); background: transparent; border: 1px solid rgba(255,255,255,.22); border-radius: 10px; padding: 6px 8px; cursor: pointer; }
.seg button:hover { border-color: rgba(255,255,255,.45); }
.seg button[aria-pressed="true"] { background: var(--amber); border-color: var(--amber); color: var(--amber-ink); font-weight: 600; }
.slider { display: grid; grid-template-columns: 1fr auto; gap: 4px 8px; align-items: center; }
.slider output { font: 13px var(--mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.slider input, .slider select { grid-column: 1 / -1; width: 100%; accent-color: var(--amber); }
.slider input[type="range"] { min-height: 28px; margin: 0; }
.slider input:disabled { opacity: .45; }
.slider select { min-height: 44px; font: inherit; font-size: 14px; padding: 0 10px; color: var(--ink); background: #141418; border: 1px solid rgba(255,255,255,.22); border-radius: 10px; }
.checks { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { position: relative; min-height: 44px; display: inline-flex; align-items: center; gap: 6px; padding: 0 12px; border-radius: 999px; border: 1px solid rgba(255,255,255,.24); color: var(--ink); font-size: 13px; line-height: 1.2; cursor: pointer; user-select: none; }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; pointer-events: none; }
.chip::before { content: ''; flex: none; width: 8px; height: 8px; border-radius: 50%; border: 1px solid rgba(255,255,255,.5); }
.chip:hover { border-color: rgba(255,255,255,.5); }
.chip:has(input:checked) { border-color: var(--amber); background: rgba(255,181,71,.16); color: var(--amber-soft); }
.chip:has(input:checked)::before { background: var(--amber); border-color: var(--amber); }
.chip:has(input:focus-visible) { outline: 2px solid var(--amber); outline-offset: 2px; }
.chip kbd { margin-left: 2px; }
.panel-note { font-size: 13px; line-height: 1.5; color: var(--muted); }

/* Sections */
.provenance { display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; padding-top: 28px; font-size: 14px; color: var(--muted); }
.tag { font: 12px var(--mono); letter-spacing: .04em; border: 1px solid var(--ink); color: var(--ink); border-radius: 999px; padding: 3px 10px; }
h2 { margin: 0 0 12px; font-weight: 700; font-size: clamp(28px, 3.2vw, 38px); line-height: 1.15; letter-spacing: -.02em; }
section { padding-top: 64px; }
.split { display: flex; flex-wrap: wrap; gap: 40px; align-items: flex-start; }
.split-text { flex: 1 1 380px; min-width: 0; }
.split-text p, .narrow p, .intro { font-size: 17px; line-height: 1.65; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; display: flex; flex-direction: column; gap: 8px; }
.card p { font-size: 15px; line-height: 1.55; color: var(--muted); }
.feature { flex: 1 1 480px; min-width: 0; padding: 24px; gap: 10px; }
.eyebrow { font-size: 13px !important; color: var(--amber) !important; letter-spacing: .08em; text-transform: uppercase; }
.card .card-title { font-weight: 600; font-size: 19px; line-height: 1.3; color: var(--ink); }
.cards { list-style: none; margin: 18px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.card .tag-line { font: 13px var(--mono); color: var(--ice); }
.narrow > * { max-width: 860px; }
.narrow p + p, .narrow .table-wrap + h2, .narrow ul + h2 { margin-top: 12px; }
.narrow ul + h2 { margin-top: 48px; }
.limits { padding-left: 20px; margin: 0; font-size: 16px; line-height: 1.65; color: var(--muted); }
.limits li { margin-bottom: 12px; }
.limits strong { color: var(--ink); }
.table-wrap { overflow-x: auto; margin-top: 18px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 8px 20px 12px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
caption { text-align: left; color: var(--muted); padding: 10px 0 6px; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
thead th { font-weight: 600; color: var(--ink); }
tbody th { font-weight: 400; color: var(--soft); }
td { color: var(--muted); font-variant-numeric: tabular-nums; }

.foot { margin-top: 72px; border-top: 1px solid var(--line); }
.foot-inner { padding-top: 28px; padding-bottom: 28px; display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; font-size: 14px; color: var(--muted); }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.foot-links a { min-height: 44px; display: inline-flex; align-items: center; }

/* Phone and small tablet: the render takes the first screen, the copy and controls follow it */
@media (max-width: 900px) {
  .hero { min-height: 0; overflow: visible; }
  .stage { position: relative; inset: auto; order: 0; height: 62vh; height: 62svh; min-height: 320px; }
  .stage::after { background: linear-gradient(to bottom, rgba(0,0,0,.6) 0, rgba(0,0,0,0) 90px), linear-gradient(to top, rgba(0,0,0,.5) 0, rgba(0,0,0,0) 22%); }
  .top { position: absolute; top: 0; left: 0; right: 0; padding: 8px 16px; gap: 0 14px; }
  .top .navlink { display: none; }
  .pill-link { min-height: 44px; font-size: 13px; padding: 0 14px; }
  .hero-body { padding: 18px 16px 8px; flex-direction: column; align-items: stretch; pointer-events: auto; }
  .hero-copy { flex: none; max-width: none; text-shadow: none; }
  h1 { font-size: 34px; }
  .lede { font-size: 16px; }
  .hud { font-size: 12px; }
  .panel { flex: none; min-width: 0; width: 100%; background: #101013; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  section { padding-top: 48px; }
  .split { gap: 20px; }
  .split-text p, .narrow p, .intro { font-size: 16px; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .table-wrap { padding: 4px 14px 10px; }
  table { font-size: 14px; }
}
.no-webgl .stage { min-height: 220px; }