@font-face{font-family:Inter;src:url(fonts/inter.woff2) format("woff2");font-weight:100 900;font-display:swap}
:root{--bg:#05070a;--ink:#eef3f7;--mute:#8b98a5;--cy:#5ee7ff;--am:#ffb45e;--pk:#ff3fa4;--glass:rgba(14,20,28,.55);--line:rgba(255,255,255,.09);--ease:cubic-bezier(.2,.8,.2,1)}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif;overflow:hidden;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
em{font-family:"Iowan Old Style","Palatino Linotype",Georgia,serif;font-style:italic;font-weight:400;color:var(--cy)}
#grain{position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.06;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence baseFrequency='.9' numOctaves='2'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");animation:grain 1s steps(4) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-1%)}}
.screen{position:fixed;inset:0;opacity:0;visibility:hidden;transition:opacity 1.1s var(--ease),visibility 0s 1.1s}
.screen.active{opacity:1;visibility:visible;transition:opacity 1.1s var(--ease)}
.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.vignette{position:absolute;inset:0;pointer-events:none;background:radial-gradient(120% 90% at 50% 45%,transparent 40%,rgba(0,0,0,.75) 100%),linear-gradient(180deg,rgba(0,0,0,.55),transparent 22%,transparent 65%,rgba(0,0,0,.85))}
.vignette.soft{background:radial-gradient(130% 100% at 50% 45%,transparent 55%,rgba(0,0,0,.6) 100%),linear-gradient(180deg,rgba(0,0,0,.6),transparent 16%)}
/* intro */
#heroVid{transform:scale(1.04)}
.intro-copy{position:absolute;left:clamp(20px,7vw,110px);bottom:clamp(90px,17vh,190px);max-width:640px;z-index:2}
.eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;color:var(--cy);margin-bottom:22px}
.eyebrow:before{content:"";display:inline-block;width:28px;height:1px;background:var(--cy);vertical-align:middle;margin-right:12px}
h1{font-size:clamp(44px,7.4vw,104px);line-height:.95;letter-spacing:-.035em;font-weight:600}
.intro-copy p{margin:26px 0 34px;color:#c3ccd4;font-size:clamp(15px,1.25vw,18px);line-height:1.6;max-width:520px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:14px;padding:16px 26px;border-radius:999px;font-weight:500;font-size:15px;transition:transform .4s var(--ease),background .3s,box-shadow .4s}
.btn.primary{background:var(--ink);color:#05070a;box-shadow:0 0 0 0 rgba(94,231,255,.5)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 10px 50px -8px rgba(94,231,255,.6)}
.btn.primary i{font-style:normal;transition:transform .4s var(--ease)}.btn.primary:hover i{transform:translateX(5px)}
.btn.ghost{background:rgba(255,255,255,.06);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.small{padding:10px 16px;font-size:13px}
.intro-foot{position:absolute;bottom:28px;left:clamp(20px,7vw,110px);display:flex;gap:10px;color:var(--mute);font-size:12px;letter-spacing:.14em;text-transform:uppercase;z-index:2}
.reveal{opacity:0;transform:translateY(24px);filter:blur(8px);animation:rv 1.4s var(--ease) var(--d) forwards}
@keyframes rv{to{opacity:1;transform:none;filter:none}}
/* lab */
#labWorld{position:absolute;inset:-6%;transition:transform 1.6s var(--ease)}
#labWorld img{width:100%;height:100%;object-fit:cover;display:block}
#lab.entering #labWorld{transform:scale(1.25)}
#hotspots{position:absolute;inset:0}
.hs{position:absolute;transform:translate(-50%,-50%);display:flex;align-items:center;gap:10px;z-index:2}
.hs .orb{width:18px;height:18px;border-radius:50%;background:var(--cy);box-shadow:0 0 0 6px rgba(94,231,255,.18),0 0 30px 6px rgba(94,231,255,.7);position:relative}
.hs .orb:after{content:"";position:absolute;inset:-14px;border-radius:50%;border:1px solid rgba(94,231,255,.6);animation:ping 2.4s var(--ease) infinite}
.hs.locked .orb{background:#c9d2da;box-shadow:0 0 0 5px rgba(255,255,255,.08),0 0 18px 2px rgba(255,255,255,.25)}
.hs.locked .orb:after{border-color:rgba(255,255,255,.25)}
@keyframes ping{0%{transform:scale(.5);opacity:1}100%{transform:scale(1.6);opacity:0}}
.hs .tag{padding:8px 12px;border-radius:12px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);font-size:13px;white-space:nowrap;opacity:.0;transform:translateX(-6px);transition:.4s var(--ease)}
.hs .tag small{display:block;color:var(--mute);font-size:10px;letter-spacing:.18em;text-transform:uppercase}
.hs:hover .tag,.hs.live .tag{opacity:1;transform:none}
.hs.live .tag{border-color:rgba(94,231,255,.5)}
.topbar{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:center;padding:18px clamp(14px,3vw,32px);z-index:5;gap:10px}
.brand{font-weight:600;letter-spacing:-.02em;font-size:18px}.brand b{color:var(--cy);font-weight:600}
.progress{font-size:12px;color:var(--mute);letter-spacing:.08em;padding:8px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--line)}
.lab-hint{position:absolute;top:74px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--mute);letter-spacing:.06em;z-index:3;text-align:center;width:90%}
#rail{position:absolute;left:0;right:0;bottom:0;display:flex;gap:10px;padding:18px clamp(14px,3vw,32px) max(18px,env(safe-area-inset-bottom));overflow-x:auto;z-index:4;scrollbar-width:none}
#rail::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;width:210px;text-align:left;padding:14px 16px;border-radius:16px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:.4s var(--ease)}
.chip:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.25)}
.chip small{color:var(--mute);font-size:10px;letter-spacing:.2em;text-transform:uppercase}
.chip b{display:block;font-weight:500;font-size:14px;margin:6px 0 8px;line-height:1.25}
.chip .st{font-size:11px;color:var(--mute)}.chip.live{border-color:rgba(94,231,255,.55);box-shadow:0 0 40px -10px rgba(94,231,255,.5)}.chip.live .st{color:var(--cy)}
/* sheet */
#sheet{position:fixed;inset:0;z-index:40;display:flex;justify-content:flex-end;background:rgba(0,0,0,.35);opacity:0;visibility:hidden;transition:.5s var(--ease)}
#sheet.open{opacity:1;visibility:visible}
.sheet-inner{width:min(480px,100%);height:100%;overflow:auto;background:rgba(9,13,19,.86);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-left:1px solid var(--line);padding:36px 30px;transform:translateX(40px);transition:.6s var(--ease);position:relative}
#sheet.open .sheet-inner{transform:none}
.close{position:absolute;top:16px;right:18px;font-size:28px;color:var(--mute)}
#sheetBody h2{font-size:30px;letter-spacing:-.02em;font-weight:600;margin:10px 0 12px}
#sheetBody .lead{color:#b7c2cc;line-height:1.6;font-size:15px}
#sheetBody ul.topics{list-style:none;margin:22px 0}
#sheetBody ul.topics li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:10px;font-size:14px}
#sheetBody ul.topics li span{color:var(--mute);font-size:12px;white-space:nowrap}
#sheetBody ul.topics li.go span{color:var(--cy)}
.badge{display:inline-block;font-size:10px;letter-spacing:.2em;text-transform:uppercase;padding:6px 10px;border-radius:999px;border:1px solid var(--line);color:var(--mute)}
.badge.live{color:#05070a;background:var(--cy);border-color:var(--cy)}
/* notes (zapiski) */
details.note{margin:14px 0;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03);overflow:hidden}
details.note summary{list-style:none;cursor:pointer;padding:12px 14px;font-size:13px;display:flex;align-items:center;gap:10px;color:#dbe4ea}
details.note summary::-webkit-details-marker{display:none}
details.note summary:before{content:"📓";}
details.note summary:after{content:"+";margin-left:auto;color:var(--mute);transition:.3s}
details.note[open] summary:after{transform:rotate(45deg)}
details.note .nb{padding:0 14px 14px;font-size:13.5px;line-height:1.65;color:#b9c4cd}
details.note .nb p+p{margin-top:8px}
.eq{font-family:"Iowan Old Style",Georgia,serif;font-size:20px;color:#fff;letter-spacing:.02em}
/* experiment */
#stageWrap{position:absolute;inset:0;overflow:hidden;background:#000}
#stage{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
#stage img,#stage video,#stage canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
#stage video{opacity:0;transition:opacity .18s linear}
#stage video.on{opacity:1}
#fx{pointer-events:none;z-index:3}
#targets{position:absolute;inset:0;z-index:4}
.tg{position:absolute;transform:translate(-50%,-50%);width:120px;height:120px;border-radius:50%;display:none}
.tg.on{display:block}
.tg:before{content:"";position:absolute;inset:30%;border-radius:50%;border:2px solid var(--cy);box-shadow:0 0 30px rgba(94,231,255,.7),inset 0 0 20px rgba(94,231,255,.4);animation:breathe 1.6s ease-in-out infinite}
.tg:after{content:attr(data-l);position:absolute;top:100%;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:12px;padding:6px 10px;border-radius:10px;background:var(--glass);border:1px solid rgba(94,231,255,.4);backdrop-filter:blur(10px)}
@keyframes breathe{50%{transform:scale(1.18);opacity:.7}}
.exp-title{text-align:center;font-weight:500;font-size:15px}.exp-title small{display:block;color:var(--cy);font-size:10px;letter-spacing:.22em;text-transform:uppercase;margin-bottom:3px}
#readouts{position:absolute;left:clamp(14px,3vw,32px);top:84px;display:flex;flex-direction:column;gap:8px;z-index:5}
.ro{padding:10px 14px;border-radius:14px;background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);min-width:150px}
.ro label{display:block;font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute)}
.ro b{font-size:20px;font-weight:500;font-variant-numeric:tabular-nums}
.phbar{display:block;height:4px;border-radius:4px;margin-top:6px;background:linear-gradient(90deg,#ff4d4d,#ffb84d,#e8f05a,#64e08a,#4db8ff,#6a5cff,#c04dff)}
.phbar i{display:block;width:10px;height:10px;border-radius:50%;background:#fff;margin-top:-3px;transform:translateX(-50%);margin-left:50%;transition:margin-left .3s;box-shadow:0 0 10px #fff}
#hud{position:absolute;right:clamp(14px,3vw,32px);top:84px;bottom:24px;width:min(400px,92vw);display:flex;flex-direction:column;gap:12px;z-index:5;pointer-events:none}
#steps{list-style:none;display:flex;gap:6px;pointer-events:auto}
#steps li{flex:1;height:4px;border-radius:4px;background:rgba(255,255,255,.12);overflow:hidden}
#steps li.done{background:var(--cy)}#steps li.cur{background:linear-gradient(90deg,var(--cy),rgba(94,231,255,.15))}
#card{pointer-events:auto;padding:22px;border-radius:20px;background:rgba(9,13,19,.72);border:1px solid var(--line);backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);max-height:100%;overflow:auto;animation:cardIn .7s var(--ease)}
@keyframes cardIn{from{opacity:0;transform:translateY(16px)}}
#card .k{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--cy)}
#card h3{font-size:22px;font-weight:600;letter-spacing:-.02em;margin:6px 0 8px}
#card p{color:#c2ccd4;font-size:14px;line-height:1.6}
#card .safety{margin:12px 0;padding:10px 12px;border-radius:12px;background:rgba(255,180,94,.08);border:1px solid rgba(255,180,94,.3);color:#ffd7a8;font-size:13px;line-height:1.5}
.gear{display:flex;gap:8px;margin:14px 0}
.gear button{flex:1;padding:14px 8px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:13px;transition:.3s}
.gear button span{display:block;font-size:24px;margin-bottom:4px}
.gear button.on{border-color:var(--cy);background:rgba(94,231,255,.12)}
.obs{display:flex;flex-direction:column;gap:8px;margin:14px 0}
.obs button{text-align:left;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:13.5px;transition:.3s}
.obs button.ok{border-color:#5be38f;background:rgba(91,227,143,.12)}
.obs button.bad{border-color:#ff6b6b;background:rgba(255,107,107,.1);animation:shake .4s}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.bal{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:16px 0;font-family:"Iowan Old Style",Georgia,serif;font-size:22px}
.bal button{width:38px;height:38px;border-radius:10px;border:1px solid rgba(94,231,255,.5);background:rgba(94,231,255,.08);font-family:Inter;font-weight:600;font-size:16px;color:var(--cy)}
.bal.solved button{border-color:#5be38f;color:#5be38f}
.next{margin-top:14px;width:100%;justify-content:center}
.next[disabled]{opacity:.35;pointer-events:none}
#toast{position:absolute;left:50%;bottom:30px;transform:translate(-50%,20px);opacity:0;z-index:20;padding:12px 18px;border-radius:999px;background:var(--ink);color:#05070a;font-weight:500;font-size:14px;transition:.5s var(--ease);pointer-events:none;white-space:nowrap}
#toast.on{opacity:1;transform:translate(-50%,0)}
.medal{font-size:56px;text-align:center;margin:8px 0;animation:pop .8s var(--ease)}
@keyframes pop{from{transform:scale(.3);opacity:0}}
@media (max-width:820px),(orientation:portrait){
 #readouts{top:auto;bottom:calc(46vh + 10px);left:12px;flex-direction:row;gap:6px}
 .ro{min-width:0;padding:7px 10px}.ro b{font-size:15px}.ro label{font-size:8.5px}
 #hud{top:auto;bottom:0;right:0;left:0;width:auto;height:46vh;padding:0 10px 10px}
 #card{padding:18px}
 .exp-title{font-size:13px}
 .hs .tag{display:none}.hs.live .tag{display:block}
 .lab-hint{display:none}
 .chip{width:170px}
}
@media (max-width:820px),(orientation:portrait){#stageWrap{bottom:46vh}#hud{background:linear-gradient(180deg,transparent,#05070a 12%)}}
@media (max-width:820px),(orientation:portrait){#exp .topbar .btn.small{padding:8px 12px;font-size:12px;white-space:nowrap}#exp .topbar #backBtn{font-size:0}#exp .topbar #backBtn:before{content:"←";font-size:16px}#stageWrap{background:radial-gradient(80% 60% at 50% 50%,#10161d,#05070a)}}
#targets{touch-action:none}
.tg.guide{pointer-events:none}
.tg.guide:before{border-style:dashed}
#dip{position:absolute;inset:0;background:#000;opacity:0;transition:opacity .3s ease;z-index:6;pointer-events:none}
#dip.on{opacity:1}
.hint{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--mute);margin-top:8px}
.meter{height:4px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:10px}.meter i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cy),#fff)}
#exp,#stage{-webkit-user-select:none;user-select:none}