:root{--bg-1: #0b3d2e;--bg-2: #145a44;--bg-3: #1f7a5a;--card: #ffffff;--ink: #102a22;--muted: #5b6b66;--good: #16a34a;--bad: #dc2626;--gold: #f5c84b;--shadow: 0 20px 50px -10px rgba(0, 0, 0, .45);--radius: 24px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0;overflow:hidden;overscroll-behavior:none;touch-action:manipulation}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:radial-gradient(1200px 600px at 10% -10%,rgba(255,255,255,.08),transparent 60%),radial-gradient(900px 600px at 100% 110%,rgba(245,200,75,.12),transparent 60%),linear-gradient(160deg,var(--bg-1),var(--bg-2) 60%,var(--bg-3));color:#fff}.app{height:100dvh;width:100vw;display:flex;flex-direction:column;padding:env(safe-area-inset-top) 16px env(safe-area-inset-bottom);max-width:540px;margin:0 auto;position:relative}.hud{display:flex;align-items:center;justify-content:space-between;padding:14px 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1024px){.overlay{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:center;gap:40px;text-align:left}.overlay>.splash-logo,.overlay>.splash-hero{flex:0 0 auto}.overlay>.subtitle,.overlay>.legend,.overlay>.cta,.overlay>.learn-more,.overlay>.muted,.overlay>.score-card{flex:0 1 460px}.legend{justify-content:flex-start}}@media (min-height: 520px) and (min-width: 640px) and (max-width: 819px){.app{max-width:720px}.card-stack{width:min(70vw,420px)}}.tutorial-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:9;display:grid;place-items:center;padding:20px;background:#05100cc7;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.tutorial-card{position:relative;width:min(92vw,460px);background:#fff;color:var(--ink);border-radius:28px;padding:28px 24px 22px;text-align:center;box-shadow:0 26px 80px -24px #000000a6;display:grid;gap:12px}.tutorial-progress{display:flex;justify-content:center;gap:6px;margin-bottom:4px}.tutorial-progress 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4px;font-size:15px;line-height:1.5;color:var(--muted)}.tutorial-actions{display:flex;gap:10px;justify-content:space-between;margin-top:8px}.tutorial-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:999px;padding:12px 16px;font:inherit;font-size:15px;font-weight:800;cursor:pointer;transition:transform .1s ease,opacity .15s ease}.tutorial-btn:active{transform:scale(.97)}.tutorial-btn:disabled{opacity:.4;cursor:not-allowed}.tutorial-btn.primary{background:#f5c84b;color:#102a22;box-shadow:0 12px 30px -12px #f5c84bb3}.tutorial-btn.secondary{background:#0f766e1a;color:#0f766e}@media (min-width: 820px){.tutorial-card{width:min(80vw,560px);padding:36px 32px 28px}.tutorial-icon{width:112px;height:112px}.tutorial-title{font-size:28px}.tutorial-body{font-size:16px}}