:root{--night:#06111f;--cyan:#47ddff;--yellow:#ffd44f;--muted:#b9d0df}*{box-sizing:border-box}body{margin:0;min-height:100vh;overflow:hidden;background:var(--night);color:#f6fbff;font-family:Poppins,system-ui,sans-serif}.skip-link{position:fixed;z-index:200;left:1rem;top:-5rem;background:#fff;color:#111;padding:.7rem 1rem;border-radius:.6rem}.skip-link:focus{top:1rem}.screen{min-height:100vh}.menu,.setup,.results{overflow:auto;text-align:center;padding:clamp(5rem,10vh,8rem) 1rem 2rem;background:radial-gradient(circle at 50% 20%,#173f61 0,#09182a 45%,#040a13 100%)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:var(--cyan);font-weight:900;font-size:.76rem}.menu h1{margin:.1rem 0;font-size:clamp(3rem,9vw,6rem);line-height:.9;letter-spacing:-.05em}.menu h1 span{color:var(--yellow);text-shadow:0 0 30px #ffcb4070}.lede{color:var(--muted);font-size:clamp(1rem,2.3vw,1.25rem);margin:.8rem auto 2rem}.mode-grid{width:min(880px,100%);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem}.mode-card{min-height:190px;border:2px solid #ffffff28;border-radius:22px;padding:1.1rem .8rem;color:#fff;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;box-shadow:0 16px 35px #0007;transition:transform .18s,border-color .18s}.mode-card:hover,.mode-card:focus-visible{transform:translateY(-6px);border-color:#fff;outline:4px solid #ffffff38}.relaxed{background:linear-gradient(145deg,#087c79,#064744)}.arcade{background:linear-gradient(145deg,#087cab,#103f65)}.expert{background:linear-gradient(145deg,#b94e1a,#6a2511)}.battle{background:linear-gradient(145deg,#a12b69,#551f55)}.mode-icon{font-size:2.6rem}.mode-card strong{font-size:1.18rem}.mode-card small{color:#e9f6ff;font-weight:700;line-height:1.35}.text-button,.back-button{border:0;background:transparent;color:#d9f6ff;text-decoration:underline;font:700 1rem inherit;cursor:pointer;margin:1.6rem .6rem;min-height:44px}/* min-height only. 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2rem));border:2px solid #65dfff;border-radius:22px;background:#0b2137;color:#fff;padding:0;box-shadow:0 25px 80px #000}dialog::backdrop{background:#010711d9}.pause-card,dialog form{padding:1.5rem;text-align:center}.pause-card>*{margin:.4rem}.toggle{display:flex;gap:.8rem;text-align:left;margin:1rem 0;padding:.8rem;background:#ffffff0c;border-radius:12px}.toggle input{width:24px;height:24px}.toggle span,.toggle small{display:block}.toggle small{color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.static-grid .arena{display:grid;grid-template-columns:repeat(4,minmax(58px,110px));place-content:center;gap:1rem;padding:1rem}.static-grid .bubble{position:relative!important;inset:auto!important;width:100%!important;height:auto!important;aspect-ratio:1;animation:none}.large-targets .bubble{min-width:92px!important;min-height:92px!important}.high-contrast .bubble{background:#07101d;border-color:#fff;box-shadow:none}.high-contrast .bubble.target{background:#000;border:8px double #ffef00}.high-contrast .play{background:#000}@keyframes floatUp{to{transform:translateY(calc(-100vh - 180px))}}@keyframes feedback{0%{opacity:0;transform:translate(-50%,-30%) scale(.6)}25%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}100%{opacity:0;transform:translate(-50%,-75%) scale(1)}}@media(max-width:760px){.mode-grid{grid-template-columns:1fr 1fr}.mode-card{min-height:145px}.hud-top{gap:.25rem}.stat{min-width:58px;padding:.3rem}.combo-stat{display:none}.target-card{min-width:140px;grid-template-columns:auto 32px}.target-card strong{display:none}.target-card img{width:32px;height:32px}.meter-row{font-size:.67rem}.arena{inset:108px 0 0}.how-card{grid-template-columns:1fr}.result-grid{grid-template-columns:1fr 1fr}}@media(max-width:430px){.menu{padding-top:3.5rem}.mode-grid{grid-template-columns:1fr}.mode-card{min-height:106px;display:grid;grid-template-columns:55px 1fr;text-align:left}.mode-icon{grid-row:1/3}.hud-top .stat:first-of-type{display:none}.icon-button{min-width:42px}.result-actions{flex-direction:column}.result-actions>*{width:100%}}@media(prefers-reduced-motion:reduce){.mode-card{transition:none}.bubble{animation:none}.feedback.show{animation:none;opacity:1}.progress span{transition:none}}