:root{--periph-bg: #f8fafc;--periph-surface: #ffffff;--periph-primary: #3b82f6;--periph-accent: #f59e0b;--periph-success: #10b981;--periph-danger: #ef4444;--periph-text: #0f172a;--periph-slate-100: #f1f5f9;--periph-slate-400: #94a3b8;--periph-slate-800: #1e293b;--periph-border: rgba(0, 0, 0, .05)}.dark-mode{--periph-bg: #0f172a;--periph-surface: #1e293b;--periph-text: #f8fafc;--periph-slate-100: #334155;--periph-slate-400: #94a3b8;--periph-border: rgba(255, 255, 255, .05)}.periph-container{display:flex;flex-direction:column;gap:2rem;padding:1rem;max-width:1200px;margin:0 auto}.periph-card{background:var(--periph-surface);border-radius:48px;padding:4rem;box-shadow:0 40px 100px -20px #0000000d;display:flex;flex-direction:column;gap:3rem;position:relative;overflow:hidden;border:1px solid var(--periph-border);text-align:center;transition:all .3s ease}.theme-toggle{position:absolute;top:2rem;right:2rem;background:var(--periph-slate-100);border:none;width:48px;height:48px;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--periph-text);z-index:20;transition:all .2s ease}.theme-toggle:hover{transform:scale(1.1)}.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem;margin:2rem 0}.benefit-tile{background:var(--periph-slate-100);padding:2rem;border-radius:24px;display:flex;flex-direction:column;align-items:center;gap:1rem;border:1px solid var(--periph-border);transition:transform .3s ease}.benefit-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.benefit-title{font-size:1.1rem;font-weight:800;color:var(--periph-text)}.benefit-desc{font-size:.9rem;color:var(--periph-slate-400);line-height:1.5}.game-viewport{position:relative;width:100%;height:600px;background:var(--periph-bg);border-radius:40px;overflow:hidden;cursor:none;border:4px solid var(--periph-slate-100);box-shadow:inset 0 0 50px #00000005;z-index:1}.center-anchor{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:20px;height:20px;background:var(--periph-accent);border-radius:50%;box-shadow:0 0 30px #f59e0b66;z-index:10}.focus-ring{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:80px;border:4px solid var(--periph-accent);opacity:.1;border-radius:50%;animation:pulse 2s ease-out infinite}@keyframes pulse{0%{transform:translate(-50%,-50%) scale(1);opacity:.3}to{transform:translate(-50%,-50%) scale(3);opacity:0}}.periph-hud{display:flex;justify-content:space-around;gap:2rem;z-index:2}.hud-stat{background:var(--periph-slate-100);padding:1.5rem;border-radius:24px;flex:1}.stat-val{font-size:2.5rem;font-weight:950;color:var(--periph-text);display:block}.stat-lbl{font-size:.7rem;font-weight:800;color:var(--periph-slate-400);text-transform:uppercase;letter-spacing:2px}.periph-target{position:absolute;width:70px;height:70px;background:var(--periph-text);color:var(--periph-surface);border-radius:20px;display:flex;justify-content:center;align-items:center;font-size:2.5rem;font-weight:950;box-shadow:0 20px 40px #0000001a}.target-wrong{background:var(--periph-danger)!important;color:#fff!important;animation:shake .4s}.target-correct{background:var(--periph-success)!important;color:#fff!important;animation:pop .3s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}@keyframes pop{0%{transform:scale(.8)}50%{transform:scale(1.2)}to{transform:scale(1)}}.periph-btn{background:var(--periph-primary);color:#fff;border:none;padding:1.5rem 3.5rem;font-size:1.4rem;font-weight:900;border-radius:24px;cursor:pointer;box-shadow:0 20px 40px #3b82f633;transition:all .2s ease}.periph-btn:hover{transform:translateY(-5px);box-shadow:0 30px 60px #3b82f64d}.mobile-blocked-view{display:none}@media(max-width:1024px){.periph-card{padding:2rem 1.5rem;gap:1.5rem}#introView,#gameView,#resultView,.disclaimer-peripheral,.theme-toggle{display:none!important}.mobile-blocked-view{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:1.5rem;padding:2rem 1rem;background:var(--periph-slate-100);border-radius:24px;border:1px dashed var(--periph-border)}.mobile-icon{font-size:4rem;color:var(--periph-accent);background:#f59e0b1a;width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center}.mobile-blocked-view h3{font-size:1.75rem;font-weight:900;color:var(--periph-text)}.mobile-blocked-view p{font-size:1rem;line-height:1.6;color:var(--periph-slate-400);max-width:300px}.mobile-tip{display:flex;flex-direction:column;align-items:center;gap:1rem;background:var(--periph-bg);padding:1.5rem;border-radius:16px;font-size:.95rem;color:var(--periph-text);font-weight:600;margin-top:1rem;border:1px solid var(--periph-border)}.mobile-tip svg{font-size:3rem;color:var(--periph-primary);filter:drop-shadow(0 4px 10px rgba(59,130,246,.3))}}