:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif; background: #080b12; color: #f6f7fb; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 50% 0, #263565 0, #101728 36%, #080b12 72%); }
.shell { width: min(1060px, calc(100% - 28px)); margin: 0 auto; padding: 48px 0 30px; }
header { text-align: center; margin-bottom: 26px; }
.eyebrow { color: #6ee7ff; text-transform: uppercase; letter-spacing: .18em; font-size: .72rem; font-weight: 800; margin: 0 0 8px; }
h1 { margin: 0; font-size: clamp(2.7rem, 8vw, 5.8rem); line-height: .9; letter-spacing: -.06em; text-shadow: 0 0 36px rgba(110,231,255,.25); }
.lede { color: #aeb8d4; margin: 16px auto 0; max-width: 560px; }
.game-card { padding: 14px; border: 1px solid rgba(255,255,255,.15); border-radius: 24px; background: rgba(13,18,32,.78); box-shadow: 0 30px 90px rgba(0,0,0,.45); }
#game { display: block; width: 100%; aspect-ratio: 4 / 3; max-height: 660px; background: #020305; border-radius: 14px; touch-action: none; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; padding: 14px 0 2px; }
button { border: 0; border-radius: 999px; padding: 11px 17px; background: #6ee7ff; color: #07101a; font: inherit; font-weight: 800; cursor: pointer; box-shadow: 0 6px 20px rgba(110,231,255,.18); }
button:hover { filter: brightness(1.08); transform: translateY(-1px); }
button:focus-visible, input:focus-visible { outline: 3px solid #f8d66d; outline-offset: 3px; }
button.quiet { background: #232d48; color: #dce5ff; box-shadow: none; }
.guide { display: grid; grid-template-columns: 1fr 1fr 2fr; gap: 12px; margin-top: 14px; }
.guide > div { min-height: 78px; padding: 14px 16px; border-radius: 16px; background: rgba(29,39,65,.72); border: 1px solid rgba(255,255,255,.1); }
.guide span, .touch-controls span { display: block; color: #8793b4; font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; }
.guide strong { display: block; margin: 4px 0 1px; font-size: 1.2rem; }
.guide small { color: #abb5d0; }
.toggles { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 12px 18px; }
.toggles label { color: #dce5ff; white-space: nowrap; }
.touch-controls { display: none; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.touch-controls > div { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 8px; padding: 10px; border-radius: 16px; background: #151d31; }
.touch-controls button { min-width: 52px; padding: 12px; touch-action: none; }
.credit { text-align: center; color: #6f7d9e; font-size: .78rem; margin: 20px 0 0; }
@media (pointer: coarse), (max-width: 760px) { .touch-controls { display: grid; } .guide { grid-template-columns: 1fr 1fr; } .guide .toggles { grid-column: 1 / -1; } }
@media (max-width: 520px) { .shell { width: min(100% - 16px, 1060px); padding-top: 28px; } .game-card { padding: 8px; border-radius: 18px; } .actions button { flex: 1 1 42%; } .touch-controls { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: no-preference) { button { transition: transform .15s ease, filter .15s ease; } }