[hidden]{display:none!important}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.reaction-wrap{max-width:960px}
.reaction-panel{max-width:820px;margin:auto}
.instruction-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}
.instruction-card{display:flex;min-height:9rem;flex-direction:column;align-items:center;justify-content:center;padding:1rem;border:1px solid var(--line);border-radius:1rem;text-align:center;background:#f8faff}
.instruction-card>span{display:grid;width:2.2rem;height:2.2rem;place-items:center;border-radius:50%;color:var(--white);background:var(--navy);font:900 1rem Arial,sans-serif}
.instruction-card strong{margin-top:.55rem;color:var(--navy)}
.instruction-card small{margin-top:.2rem;color:var(--muted)}
.best-card{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin:1rem 0 0;padding:1rem 1.2rem;border-radius:1rem;background:#eef4ff;color:var(--navy)}
.best-card span{font-weight:800}.best-card strong{font:900 1.55rem Arial,sans-serif;white-space:nowrap}
.reaction-start{min-width:min(100%,18rem)}
.reaction-toolbar strong{color:var(--navy);font:900 1.15rem Arial,sans-serif}
.reaction-zone{display:grid;width:100%;min-height:clamp(18rem,50vh,31rem);margin-top:1.2rem;padding:2rem;place-content:center;gap:.55rem;border:3px solid var(--navy);border-radius:1.35rem;color:var(--white);background:var(--navy);text-align:center;cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;overscroll-behavior:contain;transition:background .12s,border-color .12s,transform .08s}
.reaction-zone:active{transform:scale(.995)}
.reaction-zone .zone-icon{font-size:clamp(2.8rem,10vw,5rem);line-height:1}
.reaction-zone strong{font-size:clamp(2rem,8vw,4rem);line-height:1.15}
.reaction-zone small{font-size:clamp(.95rem,3vw,1.2rem);font-weight:800}
.reaction-zone[data-state="waiting"]{background:#dc2626;border-color:#991b1b}
.reaction-zone[data-state="ready"]{background:#16a34a;border-color:#166534}
.reaction-zone[data-state="false-start"]{color:var(--navy);background:var(--yellow);border-color:#d97706}
.reaction-zone[data-state="feedback"]{color:var(--navy);background:var(--cyan);border-color:#0891b2}
.reaction-zone[data-state="invalid"]{background:#64748b;border-color:#334155}
.reaction-feedback{min-height:1.75rem;margin:.85rem 0 0;color:var(--navy);text-align:center;font-weight:900}
.reaction-result.show{display:block}
.result-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;margin:1.2rem 0}
.result-summary>div{padding:1rem .65rem;border:1px solid var(--line);border-radius:1rem;background:#f8faff}
.result-summary span{display:block;color:var(--muted);font-size:.82rem;font-weight:800}
.result-summary strong{display:block;margin-top:.25rem;color:var(--navy);font:900 clamp(1.25rem,4vw,2rem) Arial,sans-serif}
.record-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.55rem;margin:0;padding:0;list-style:none}
.record-list li{padding:.75rem .35rem;border-radius:.8rem;background:#eef4ff;text-align:center}
.record-list small,.record-list strong{display:block}.record-list small{color:var(--muted)}.record-list strong{color:var(--navy);font-family:Arial,sans-serif}
.new-best{margin:.9rem 0 0;color:#047857;font-size:1.1rem;font-weight:900;text-align:center}
.other-games{max-width:820px;margin:4rem auto 0;text-align:center}
.other-games h2{margin:.25rem 0 1rem;color:var(--navy);font-size:clamp(1.6rem,5vw,2.3rem)}
.other-game-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}
.other-game-links a{display:flex;min-height:6rem;align-items:center;justify-content:center;gap:.6rem;padding:1rem;border:1px solid var(--line);border-radius:1rem;background:var(--white);box-shadow:0 8px 25px rgba(23,37,84,.07);text-decoration:none}
.other-game-links a:hover,.other-game-links a:focus-visible{transform:translateY(-2px)}
.other-game-links span{font-size:1.7rem}.other-game-links strong{color:var(--navy)}
@media(max-width:700px){.instruction-grid{grid-template-columns:1fr}.instruction-card{min-height:6.5rem}.result-summary{grid-template-columns:1fr}.record-list{grid-template-columns:repeat(2,minmax(0,1fr))}.other-game-links{grid-template-columns:1fr}.reaction-zone{min-height:21rem;padding:1.25rem}}
@media(max-width:520px){.best-card{align-items:flex-start;flex-direction:column}.reaction-panel{padding:1rem}.reaction-zone{min-height:19rem}.record-list li:last-child{grid-column:1/-1}}
@media(prefers-reduced-motion:reduce){.reaction-zone{transition:none}}