:root {
  color-scheme: dark;
  --ink: #f4f1eb;
  --muted: #b8b9b8;
  --line: rgba(255, 255, 255, .15);
  --surface: #11191e;
  --accent: #e4c88a;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #090e11;
  color: var(--ink);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(ellipse at 50% 5%, #1b292f 0, #0b1115 52%, #090e11 100%); }
.page { width: min(100% - 32px, 1120px); margin: 0 auto; padding: 30px 0 48px; }
.wordmark { display: inline-block; color: var(--ink); font-size: .9rem; font-weight: 700; letter-spacing: .2em; text-decoration: none; }
.intro { max-width: 720px; margin: 34px auto 24px; text-align: center; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: .73rem; letter-spacing: .18em; text-transform: uppercase; }
h1 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.3rem, 7vw, 4.4rem); font-weight: 400; line-height: 1.02; }
.lede { max-width: 640px; margin: 18px auto 0; color: var(--muted); font-size: 1rem; line-height: 1.65; }
.preview { position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.22); border-radius: 20px; background: radial-gradient(ellipse at 50% 38%, rgba(255,253,243,.72) 0%, rgba(255,253,243,0) 68%), linear-gradient(112deg, #778886 0%, #bcc8c4 22%, #eef0e8 43%, #b9c9c6 64%, #72817f 100%); }
model-viewer { display: block; width: 100%; height: min(67vh, 680px); min-height: 360px; --poster-color: transparent; background: transparent; }
.ar-button { position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%); border: 1px solid rgba(255,255,255,.34); border-radius: 999px; padding: 13px 19px; background: rgba(12,17,20,.88); color: var(--ink); font: inherit; cursor: pointer; white-space: nowrap; }
.ar-button:hover { border-color: var(--accent); }
.ar-overlay-controls { position: absolute; z-index: 3; left: 12px; right: 12px; bottom: 72px; display: grid; gap: 7px; padding: 10px; border: 1px solid rgba(255,255,255,.34); border-radius: 12px; background: rgba(12,17,20,.9); color: var(--ink); }
.ar-overlay-controls[hidden] { display: none !important; }
.animation-title { color: var(--muted); font-size: .76rem; letter-spacing: .05em; }
.animation-buttons { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 7px; }
.led-animation-button { min-height: 40px; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: rgba(255,255,255,.045); color: var(--ink); font: inherit; font-size: .78rem; cursor: pointer; }
.led-animation-button[aria-pressed="true"] { border-color: var(--accent); background: rgba(228,200,138,.14); }
.led-animation-button:disabled { opacity: .45; cursor: not-allowed; }
.ar-overlay-controls small, .animation-note { margin: 0; color: var(--muted); font-size: .72rem; line-height: 1.4; }
.led-controls { grid-column: 1 / -1; display: grid; gap: 8px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.025); }
#animation-status { margin: 0; color: var(--accent); font-size: .78rem; }
.ar-note { width: max-content; max-width: calc(100% - 32px); margin: 0 auto 12px; border: 1px solid rgba(255,255,255,.24); border-radius: 999px; padding: 11px 16px; background: rgba(12,17,20,.9); color: var(--ink); font-size: .82rem; line-height: 1.4; text-align: center; }
.load-status { position: absolute; z-index: 1; left: 50%; top: 50%; transform: translate(-50%, -50%); width: max-content; max-width: calc(100% - 32px); margin: 0; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; padding: 12px 16px; background: rgba(12,17,20,.74); color: var(--ink); font-size: .82rem; text-align: center; }
.viewer-help { position: absolute; top: 12px; right: 16px; margin: 0; color: #263238; font-size: .75rem; text-shadow: 0 1px 2px rgba(255,255,255,.68); }
.model-caption { padding: 0 16px 17px; color: #263238; font-size: .9rem; text-align: center; }
.controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; max-width: 700px; margin: 22px auto 0; }
.auto-cycle { align-self: end; min-height: 46px; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: rgba(255,255,255,.045); color: var(--ink); font: inherit; cursor: pointer; }
.auto-cycle:hover, .auto-cycle:focus-visible { border-color: var(--accent); }
label { display: grid; gap: 8px; color: var(--muted); font-size: .83rem; }
select { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 13px 14px; background: var(--surface); color: var(--ink); font: inherit; }
.facts { max-width: 700px; margin: 13px auto 0; color: var(--accent); font-size: .86rem; }
.facts p { margin: 6px 0; }
.notice { max-width: 850px; margin: 20px auto 0; padding: 14px 17px; border-left: 2px solid var(--accent); background: rgba(255,255,255,.035); color: var(--muted); font-size: .83rem; line-height: 1.5; }
.notice strong { color: var(--ink); }
.notice p { margin: 6px 0 0; }
footer { display: flex; justify-content: space-between; gap: 16px; max-width: 850px; margin: 25px auto 0; color: var(--muted); font-size: .78rem; }
footer a { color: var(--accent); text-underline-offset: 3px; }
@media (max-width: 600px) {
  .page { width: min(100% - 24px, 1120px); padding-top: 20px; }
  .intro { margin: 30px auto 20px; }
  .lede { font-size: .92rem; }
  model-viewer { height: 56vh; min-height: 340px; }
  .controls { grid-template-columns: 1fr; gap: 12px; }
  .animation-buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .led-controls { grid-column: auto; }
  .ar-overlay-controls { left: 8px; right: 8px; bottom: 64px; }
  footer { flex-direction: column; }
}