:root { color-scheme: dark; font-family: Arial, Helvetica, sans-serif; background: #101010; color: #f4f4ef; }
* { box-sizing: border-box; }
body { margin: 0; }
[hidden] { display: none !important; }
#launch { position: fixed; inset: 0; z-index: 3; display: grid; place-items: center; padding: 28px; background: #101010; overflow-y: auto; }
.intro { width: min(100%, 420px); text-align: center; }
.eyebrow { font-size: .8rem; letter-spacing: .18em; color: #c4ff49; }
h1 { font-size: clamp(2rem, 10vw, 3rem); letter-spacing: -.065em; margin: 18px 0 24px; }
p { line-height: 1.6; }
button { min-height: 48px; border: 1px solid transparent; border-radius: 0; font: inherit; font-weight: 700; cursor: pointer; }
button:focus-visible { outline: 3px solid white; outline-offset: 5px; }
button:disabled { opacity: .65; cursor: wait; }
#start { width: 100%; margin-top: 24px; padding: 18px; color: #101010; background: #c4ff49; }
.privacy { font-size: .875rem; color: #aaa; margin-top: 28px; }
#message { color: #f4f4ef; }
#ar { position: fixed; inset: 0; overflow: hidden; isolation: isolate; }
#ar a-scene { width: 100%; height: 100%; }
#hud { position: fixed; inset: 0; z-index: 2; pointer-events: none; padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left)); display: flex; flex-direction: column; justify-content: space-between; }
header { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
header strong, #instruction { background: #101010d9; padding: 12px; }
#close { pointer-events: auto; padding: 12px 18px; background: #101010; color: white; border-color: #666; }
#instruction { align-self: center; text-align: center; }
#debug { position: fixed; top: 95px; left: 20px; z-index: 4; background: #000d; color: #c4ff49; padding: 12px; white-space: pre-line; font: 14px monospace; }