:root{color-scheme:dark;--bg:#0b1022;--pane:#111c33;--line:#2d4264;--text:#eaf4ff;--muted:#a1b1ce;--lime:#aaf5a6;--cyan:#7be0ee;--yellow:#ffdf88;--radius:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse 1000px 600px at 90% -20%,#17375f,transparent),var(--bg);font-family:system-ui,-apple-system,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;color:var(--text);line-height:1.6}
button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.65}a{color:inherit;text-decoration:none}a:hover{color:var(--cyan)}:focus-visible{outline:3px solid var(--yellow);outline-offset:4px}
.skip{position:absolute;top:-100px;left:10px;background:var(--yellow);color:#141b2c;padding:8px;z-index:20}.skip:focus{top:10px}
.topbar{min-height:72px;padding:13px max(24px,calc((100vw - 1160px)/2));display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid #223752;background:#0a1320b0;backdrop-filter:blur(18px)}
.logo{display:flex;align-items:center;gap:12px;font-size:15px;font-weight:900;letter-spacing:.05em;white-space:nowrap}.logo em{font-style:normal;color:var(--cyan)}.logo small{display:block;font-size:9px;font-weight:700;letter-spacing:.2em;color:var(--muted)}
.logo-mark{position:relative;display:grid;place-items:center;width:44px;height:44px;border:2px solid var(--cyan);border-radius:13px;background:#173a57;color:var(--cyan);font-size:27px}.logo-mark span{position:absolute;font-size:15px;right:-5px;top:-7px}
.nav{display:flex;flex-wrap:wrap;gap:19px;font-size:12px;color:#bdcce5}.nav a:hover{text-decoration:underline}
main{max-width:1160px;margin:auto;padding:0 24px 70px}.hero{display:grid;grid-template-columns:1.3fr .7fr;align-items:center;min-height:350px;gap:32px;padding:60px 0 50px;border-bottom:1px solid #273654}.eyebrow{display:block;color:var(--cyan);font-weight:900;font-size:10px;letter-spacing:.23em;text-transform:uppercase}
.hero h1{font-size:clamp(29px,4.6vw,54px);line-height:1.15;letter-spacing:-.045em;margin:13px 0 20px}.hero h1 span{display:block;color:var(--lime)}.hero p{color:#b8c9e2;max-width:560px;margin:0 0 20px;font-size:14px}.hero-facts{display:flex;gap:9px;flex-wrap:wrap}.hero-facts span{background:#172a43;border:1px solid #3b5474;border-radius:100px;padding:5px 12px;font-size:12px}
.hero-visual{height:260px;position:relative;display:grid;place-items:center;overflow:hidden}.radar{position:absolute;border:1px solid #6aafff6b;border-radius:50%;aspect-ratio:1;animation:pulse 6s ease-in-out infinite}.radar1{width:210px}.radar2{width:315px;animation-delay:1s}.hero-visual:before{content:'';position:absolute;width:130px;height:130px;background:#65f0cd45;filter:blur(35px);border-radius:50%}.bolt{font-size:94px;filter:drop-shadow(0 0 28px #6ee6ed);z-index:1;animation:bob 3.5s ease-in-out infinite}.glow-line{position:absolute;width:100%;height:1px;top:55%;background:linear-gradient(90deg,transparent,#77d9ec,transparent)}@keyframes pulse{0%,100%{transform:scale(.94);opacity:.5}50%{transform:scale(1.06);opacity:1}}@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}
.lab,.scores,.how{padding-top:42px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:18px}.section-head h2{margin:5px 0 0;font-size:clamp(22px,3vw,29px)}.section-head p{color:var(--muted);font-size:11px;margin:0}
.mode-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.mode{background:#111d34;color:var(--text);border:1px solid #30496e;text-align:left;padding:18px;border-radius:14px;display:flex;flex-direction:column;gap:4px;min-height:126px;transition:border-color .2s,transform .2s,background .2s}.mode:hover{transform:translateY(-2px);border-color:#9ce7f2}.mode.active{border:2px solid var(--cyan);background:linear-gradient(155deg,#173959,#13203a);box-shadow:0 0 35px #51cbe714}.mode span{font-size:25px}.mode b{font-size:16px}.mode small{color:var(--muted);font-size:11px}
.game-shell{border-radius:var(--radius);background:linear-gradient(165deg,#142540,#101a30);border:1px solid #3b557c;margin-top:16px;box-shadow:0 20px 65px #0003;overflow:hidden}.game-shell-header{padding:17px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #2e4264}.game-shell-header h3{font-size:20px;margin:3px 0 0}.round-tag{color:#ffdda0;border:1px solid #82714a;background:#483e2e66;padding:5px 11px;border-radius:80px;font-size:11px}
.game-panel{padding:26px;min-height:345px}.game-panel[hidden]{display:none!important}.game-status{text-align:center;color:#b9cfe8;font-size:13px;margin:19px 0 0;min-height:25px}
.reaction-pad{width:100%;height:245px;border-radius:18px;background:linear-gradient(145deg,#254066,#1a2b4b);border:2px solid #446993;color:#f1f6ff;display:flex;justify-content:center;align-items:center;flex-direction:column;gap:7px;touch-action:manipulation;transition:background-color .15s;border-color:.15s;position:relative;user-select:none}.reaction-pad:hover{border-color:#92cfef}.reaction-pad b{font-size:clamp(21px,3vw,30px)}.reaction-pad small{font-size:13px;color:#dee8f6;text-align:center;padding:0 15px}.reaction-pad #reaction-symbol{font-size:42px}.reaction-pad.waiting{background:linear-gradient(135deg,#782b45,#481b33);border-color:#ff92aa}.reaction-pad.ready{background:linear-gradient(135deg,#155f4e,#126a54);border-color:#9efaa4}.reaction-pad.result{background:linear-gradient(135deg,#1e5e7a,#184862);border-color:#91e9ff}
.measurement-trail{display:flex;gap:9px;justify-content:center;flex-wrap:wrap;margin-top:13px}.measurement-trail span{background:#213853;padding:6px 11px;border-radius:8px;font-variant-numeric:tabular-nums;font-size:12px;color:#bce7fb}
.timing-panel{text-align:center}.timing-panel>p:first-child,.memory-panel>p:first-child{font-size:13px;color:#bfd0e4;margin:0 0 28px}
.timing-track{position:relative;height:72px;max-width:700px;border-radius:13px;background:repeating-linear-gradient(90deg,#1c3450,#1c3450 5%,#254361 5%,#254361 10%);border:2px solid #4c7397;margin:40px auto 36px;overflow:hidden}.timing-zone{position:absolute;height:100%;width:12%;left:44%;background:#61cfa665;box-shadow:0 0 22px #94ffa6}.timing-center{width:3px;height:100%;background:#f9edab;position:absolute;left:50%;z-index:2}.timing-marker{width:16px;height:100%;background:#ff9e72;position:absolute;left:0;z-index:3;transform:translateX(-50%);box-shadow:0 0 16px #ffae86}.game-action{display:block;min-width:210px;min-height:47px;margin:auto;border:0;border-radius:12px;background:linear-gradient(135deg,#85e9ea,#76bfff);color:#0f2240;font-size:14px;font-weight:900;box-shadow:0 5px 20px #0004}.game-action:hover{filter:brightness(1.07)}
.memory-panel{text-align:center}.memory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:330px;margin:0 auto 22px}.memory-grid button{aspect-ratio:1;max-height:105px;border:2px solid #345777;background:#244059;border-radius:12px;transition:background .13s,transform .1s;touch-action:manipulation}.memory-grid button:hover:not(:disabled){border-color:#b1edff}.memory-grid button.lit{background:#f4db85;box-shadow:0 0 25px #f4db8570;transform:scale(.96)}.memory-grid button.correct{background:#5cba9d}.memory-grid button.wrong{background:#bb5261}.memory-grid button:disabled{opacity:.90}
.game-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 24px;border-top:1px solid #2b4465;color:#8fa5c5;font-size:10px}.game-footer button{font-size:11px;border:1px solid #415a78;color:#d2e8ff;background:#122844;padding:7px 12px;border-radius:8px}
.score-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.score-grid article{border:1px solid #334e70;border-radius:16px;background:#13223a;padding:21px;display:flex;flex-direction:column}.score-icon{font-size:23px}.score-grid small{font-size:11px;color:#b9cee7;margin-top:10px}.score-grid strong{font-size:clamp(25px,3.5vw,36px);color:var(--lime);font-variant-numeric:tabular-nums;margin-top:4px}.score-grid p{font-size:11px;color:#90a9c7;margin:0}.clear-button{background:transparent;border:1px solid #4d6178;border-radius:8px;color:#d8eaff;font-size:11px;padding:8px 12px}.privacy-note{color:#99b8d4;font-size:11px;margin:14px 0;line-height:1.7}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.how h2{font-size:24px;margin:5px 0 18px}.how article{border-left:2px solid #68cede;padding:4px 16px}.how b{font-size:13px}.how p{font-size:12px;color:#9cb0cf;line-height:1.7}
.footer{padding:23px max(24px,calc((100vw - 1160px)/2));border-top:1px solid #2a3f5c;display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;background:#090f1d;color:#b6c9df;font-size:12px}.footer b{color:#d4faff}.footer p{max-width:550px;color:#8297b4;font-size:10px}.footer nav{display:flex;align-items:center;flex-wrap:wrap;gap:15px;font-size:11px}
@media(max-width:740px){.topbar{padding:12px 16px}.nav{gap:10px}.nav a{font-size:10px}main{padding:0 14px 50px}.hero{grid-template-columns:1fr;min-height:0;padding:35px 0 23px}.hero-visual{display:none}.hero p{font-size:13px}.mode-tabs{gap:7px}.mode{padding:13px 10px;min-height:128px}.mode b{font-size:12px}.mode small{font-size:10px;line-height:1.45}.mode span{font-size:22px}.game-panel{padding:14px;min-height:300px}.reaction-pad{height:205px}.game-shell-header{padding:14px}.game-footer{padding:10px 14px;align-items:start}.score-grid{gap:8px}.score-grid article{padding:13px}.score-grid strong{font-size:23px}.score-grid small{font-size:10px}.how-grid{grid-template-columns:1fr}.footer{padding:20px 14px}}
@media(max-width:410px){.nav a:nth-child(3),.nav a:nth-child(4){display:none}.mode-tabs{grid-template-columns:1fr}.mode{min-height:0;display:grid;grid-template-columns:30px 1fr;align-items:center}.mode small{grid-column:2}.reaction-pad small{font-size:11px}.score-grid{grid-template-columns:1fr}.score-grid article{padding:10px 15px;flex-direction:row;align-items:center;gap:11px}.score-grid article small{flex:1;margin-top:0}.score-grid strong{font-size:22px}.score-grid article p{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}