:root{--bg:#02070b;--panel:#0b141b;--line:#365264;--ink:#fff;--muted:#a8bbc8;--cyan:#50ffda;--blue:#68b7ff}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;color:var(--ink);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}body{display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 50% 0,#19364a 0,#071119 42%,#02070b 78%)}
.app{width:min(1580px,100%);background:#071017f5;border:1px solid #47677b;box-shadow:0 25px 100px #000,0 0 80px #27e4cc12}header{height:108px;padding:22px 30px;display:flex;align-items:center;justify-content:space-between;background:#0a151e;border-bottom:1px solid var(--line)}h1{font:650 27px/1.15 system-ui,sans-serif;letter-spacing:-.02em;margin:6px 0}.eyebrow,.panel-label,footer{font-size:11px;letter-spacing:.16em}.eyebrow{color:#72dbc8}.status{display:flex;gap:9px;align-items:center;color:var(--cyan);font-size:12px;font-weight:800}.status i{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}
.workspace{display:grid;grid-template-columns:310px minmax(800px,1fr) 230px;min-height:520px}.panel{padding:24px;border-right:1px solid var(--line)}.panel:last-child{border-right:0}.panel-label{display:flex;gap:10px;align-items:center;color:#d0e0e9;margin-bottom:18px}.panel-label span{color:var(--cyan);font-weight:900}.panel-heading p{margin:-7px 0 16px;color:#a8bdca;font:13px/1.5 system-ui,sans-serif;max-width:720px}
.canvas-wrap{position:relative;width:260px;height:260px;margin:auto;background:#010406;box-shadow:inset 0 0 0 2px #527084,0 0 35px #50ffda12}.canvas-wrap>canvas{width:260px;height:260px}.grid-overlay{position:absolute;inset:0;pointer-events:none;opacity:.3;background-image:linear-gradient(#597182 1px,transparent 1px),linear-gradient(90deg,#597182 1px,transparent 1px);background-size:10px 10px}.hint{position:absolute;inset:auto 0 12px;text-align:center;color:#738995;font-size:10px;letter-spacing:.25em;pointer-events:none}canvas{display:block;touch-action:none;cursor:crosshair}.actions{display:flex;gap:8px;margin-top:16px}.actions button{border:0;background:var(--cyan);color:#03100d;font:800 11px ui-monospace,monospace;letter-spacing:.08em;padding:14px;flex:1;cursor:pointer}.actions button.secondary{background:#1d2b35;color:#d4e1e9}.actions button:disabled{opacity:.4;cursor:wait}.actions button:active{transform:translateY(1px)}
.network-panel{display:flex;flex-direction:column;background:radial-gradient(circle at 50% 45%,#153542 0,#09141c 60%)}.network{flex:1;min-height:340px;display:flex;align-items:center;justify-content:space-around;gap:7px;overflow:hidden}.stage{position:relative;display:flex;flex-direction:column;align-items:center;gap:20px;opacity:.5;filter:saturate(.25);transform:scale(.96);transition:.38s}.stage.active{opacity:1;filter:none;transform:translateY(-10px) scale(1.16)}.stage.active::before{content:"PROCESSING";position:absolute;top:-38px;color:var(--cyan);font-size:8px;letter-spacing:.16em}.stage.done{opacity:.9;filter:none}.stage label{color:#b6c8d2;font-size:10px;letter-spacing:.09em;font-weight:800;text-align:center;white-space:nowrap}.stage label small{display:block;color:#8099a7;font-size:8px;margin-top:5px}.stage.active label,.stage.active label small{color:var(--cyan)}
.pixel-preview{width:82px;height:82px;display:grid;grid-template-columns:repeat(14,1fr);background:#03080c;border:2px solid #608094;box-shadow:0 0 22px #000}.pixel-preview i{background:var(--cyan)}.feature-maps{position:relative;width:92px;height:98px}.feature-maps canvas{position:absolute;width:72px;height:72px;border:2px solid #5b8496;background:#040a0e;box-shadow:0 10px 22px #000;image-rendering:pixelated}.feature-maps canvas:nth-child(1){left:0;top:24px}.feature-maps canvas:nth-child(2){left:9px;top:12px}.feature-maps canvas:nth-child(3){left:18px;top:0}.feature-maps.small{transform:scale(.9)}.feature-maps.tiny{transform:scale(.82)}.flow{width:33px;display:flex;justify-content:space-between}.flow i{width:5px;height:5px;border-radius:50%;background:#7590a0}.network.running .flow i{animation:flow .7s infinite;box-shadow:0 0 10px var(--cyan)}.network.running .flow i:nth-child(2){animation-delay:.15s}.network.running .flow i:nth-child(3){animation-delay:.3s}@keyframes flow{0%,100%{transform:translateX(-6px);background:#5c7585}50%{transform:translateX(6px);background:var(--cyan)}}
.nodes{display:grid;grid-template-columns:repeat(3,13px);gap:12px}.nodes i{width:13px;height:13px;border:2px solid #7891a0;border-radius:50%}.stage.active .nodes i{animation:pulse .75s alternate infinite}.stage.active .nodes i:nth-child(3n+1){animation-delay:.15s}.stage.active .nodes i:nth-child(3n+2){animation-delay:.3s}@keyframes pulse{to{background:var(--blue);box-shadow:0 0 14px var(--blue);transform:scale(1.3)}}
.metrics{border-top:1px solid var(--line);padding-top:16px;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:10px}.metrics strong{color:var(--cyan);font-size:12px;letter-spacing:.12em;text-shadow:0 0 12px #50ffda66}.metrics b{color:#eefaff;font-weight:600}.result-panel{display:flex;flex-direction:column}.prediction{text-align:center;padding:15px 0 22px;border-bottom:1px solid var(--line)}.prediction span{display:block;font:750 110px/1 system-ui,sans-serif;color:var(--cyan);text-shadow:0 0 35px #50ffda66}.prediction small{color:#c4d3dc;font-size:10px;letter-spacing:.1em}.scores{padding-top:18px;display:grid;gap:8px}.score{display:grid;grid-template-columns:15px 1fr 36px;align-items:center;gap:8px;font-size:10px;color:#bdcdd6}.bar{height:5px;background:#2c4352}.bar i{display:block;height:100%;width:0;background:#607787;transition:width .7s cubic-bezier(.2,.8,.2,1)}.score.winner{color:var(--cyan)}.score.runner-up{color:var(--blue)}.score.winner .bar i{background:var(--cyan);box-shadow:0 0 9px var(--cyan)}.score.runner-up .bar i{background:var(--blue);box-shadow:0 0 8px var(--blue)}footer{padding:16px 26px;border-top:1px solid var(--line);text-align:center;color:#aabec9;letter-spacing:.07em}footer b{color:var(--cyan);margin-right:12px}
@media(max-width:1250px){body{padding:0}.app{border:0}.workspace{grid-template-columns:290px minmax(650px,1fr) 220px}.network{overflow-x:auto;justify-content:flex-start;padding:35px 15px}.stage{min-width:85px}}
@media(max-width:900px){.workspace{grid-template-columns:1fr}.panel{border-right:0;border-bottom:1px solid var(--line)}.network-panel{min-height:480px}.network{overflow-x:auto}.result-panel{min-height:420px}.canvas-wrap{max-width:100%}}

/* Full-screen activation sequence inspired by the reference exhibit */
.workspace{grid-template-columns:300px minmax(850px,1fr) 220px;min-height:750px}.network-panel{padding:22px}.panel-heading p{margin-bottom:12px}.focus-view{position:relative;min-height:480px;display:grid;grid-template-columns:230px 1fr;align-items:center;gap:24px;overflow:hidden;border:1px solid #416174;background:radial-gradient(circle at 67% 48%,#194456 0,#0a1821 48%,#050d13 100%);box-shadow:inset 0 0 80px #0008}.focus-view::before{content:"";position:absolute;inset:0;opacity:.16;background-image:linear-gradient(#628093 1px,transparent 1px),linear-gradient(90deg,#628093 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(90deg,transparent,#000)}.focus-copy{position:relative;z-index:3;padding-left:24px}.focus-copy span{color:var(--cyan);font-size:10px;font-weight:900;letter-spacing:.2em}.focus-copy h2{font:700 27px/1.08 system-ui,sans-serif;margin:10px 0 12px}.focus-copy p{color:#b5c8d3;font:13px/1.55 system-ui,sans-serif;margin:0}.focus-stack{position:relative;z-index:2;width:100%;height:430px;display:grid;grid-template-columns:repeat(4,minmax(80px,1fr));grid-template-rows:repeat(3,1fr);gap:12px;padding:28px;perspective:900px;transition:.4s}.focus-stack.idle{display:block}.focus-stack.idle::after{content:"ACTIVATION MAPS";position:absolute;inset:0;display:grid;place-items:center;color:#3e6474;font-size:13px;letter-spacing:.25em}.focus-stack canvas{width:100%;height:100%;min-height:100px;object-fit:contain;background:#02080c;border:2px solid #6092a5;box-shadow:0 14px 28px #000b,0 0 18px #50ffda16;image-rendering:pixelated;animation:map-arrive .7s cubic-bezier(.2,.8,.2,1) both}.focus-stack canvas:nth-child(2n){animation-delay:.08s}.focus-stack canvas:nth-child(3n){animation-delay:.16s}.focus-stack canvas:nth-child(4n){animation-delay:.24s}.focus-stack.input-mode{display:grid;grid-template-columns:1fr;grid-template-rows:1fr;padding:48px 18%}.focus-stack.input-mode canvas{min-height:320px}.focus-stack.dense-mode{display:flex;align-items:center;justify-content:center;gap:9px;flex-wrap:wrap;padding:90px}.focus-stack.dense-mode i{width:22px;height:22px;border:2px solid #6c92a4;border-radius:50%;animation:node-arrive .5s both;box-shadow:0 0 14px #68b7ff33}.scan-line{position:absolute;z-index:4;top:0;bottom:0;width:2px;background:var(--cyan);box-shadow:0 0 18px var(--cyan);opacity:0}.focus-view.processing .scan-line{animation:scan 1.1s ease-in-out}.focus-view.processing{box-shadow:inset 0 0 80px #0008,0 0 28px #50ffda22}@keyframes map-arrive{from{opacity:0;transform:translate3d(90px,-20px,-140px) rotateY(-35deg)}to{opacity:1;transform:none}}@keyframes node-arrive{from{opacity:0;transform:translateX(100px) scale(.2)}to{opacity:1;transform:none}}@keyframes scan{0%{left:30%;opacity:0}15%,85%{opacity:1}100%{left:100%;opacity:0}}
.network{min-height:145px;flex:0 0 145px;border-top:1px solid var(--line);margin-top:14px;padding-top:12px}.network .stage{transform:scale(.76)}.network .stage.active{transform:translateY(-4px) scale(.88)}.network .pixel-preview{width:62px;height:62px}.network .feature-maps{transform:scale(.68)}.network .feature-maps.small{transform:scale(.62)}.network .feature-maps.tiny{transform:scale(.56)}.network .stage.active::before{top:-19px}.metrics{margin-top:0}.prediction span{font-size:94px}
.layer-info{display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:10px;margin:0 0 14px;padding:10px 12px;border:1px solid #3d5d70;background:#07131bcc;color:#b9ccd7;font:12px/1.4 system-ui,sans-serif}.layer-info span{color:var(--cyan);font:800 10px ui-monospace,monospace;letter-spacing:.16em}.layer-info b{color:#eefaff;font:700 11px ui-monospace,monospace;white-space:nowrap}.layer-info p{margin:0;color:#b6c8d2}.softmax-mode{display:grid;grid-template-columns:1fr;grid-template-rows:none;align-content:center;gap:9px;padding:44px 56px}.softmax-choice{display:grid;grid-template-columns:34px 1fr 46px;align-items:center;gap:10px;padding:7px 9px;border:1px solid #38596b;background:#07121a;animation:node-arrive .45s both}.softmax-choice span{display:grid;place-items:center;width:28px;height:28px;border:1px solid #5f8498;color:#d5e5ed;font-weight:800}.softmax-choice b{color:#d5e5ed;text-align:right}.softmax-track{height:8px;background:#233946;overflow:hidden}.softmax-track i{display:block;height:100%;background:#607787}.softmax-choice.winner{border-color:var(--cyan);box-shadow:0 0 18px #50ffda22}.softmax-choice.winner span,.softmax-choice.winner b{color:var(--cyan)}.softmax-choice.winner .softmax-track i{background:var(--cyan);box-shadow:0 0 9px var(--cyan)}.softmax-choice.runner-up{border-color:#68b7ff99}.softmax-choice.runner-up span,.softmax-choice.runner-up b{color:var(--blue)}.softmax-choice.runner-up .softmax-track i{background:var(--blue)}
@media(max-width:1250px){.workspace{grid-template-columns:280px minmax(720px,1fr) 210px}.focus-view{grid-template-columns:190px 1fr}.focus-stack{padding:25px 18px}.focus-copy{padding-left:18px}.focus-copy h2{font-size:23px}}
@media(max-width:900px){
  html,body{width:100%;overflow-x:hidden}body{display:block;padding:0;background:#061018}.app{width:100%;border:0;box-shadow:none}
  header{height:auto;min-height:88px;padding:17px 18px;gap:12px}h1{font-size:21px;max-width:285px}.eyebrow{font-size:9px}.status{font-size:10px;align-self:flex-start;margin-top:4px}.status span{display:none}
  .workspace{display:flex;flex-direction:column;min-height:0}.panel{width:100%;padding:18px;border-right:0;border-bottom:1px solid var(--line)}
  .draw-panel{order:1}.network-panel{order:2;min-height:0;padding:18px}.result-panel{order:3;min-height:0}.draw-panel,.network-panel,.result-panel{scroll-margin-top:12px}
  .panel-label{font-size:10px;margin-bottom:14px}.canvas-wrap{width:min(280px,calc(100vw - 36px));height:min(280px,calc(100vw - 36px))}.canvas-wrap>canvas{width:100%;height:100%}.actions{max-width:420px;margin:14px auto 0}.actions button{min-height:50px;font-size:12px}
  .panel-heading p{font-size:12px;margin-bottom:14px}.layer-info{grid-template-columns:1fr;gap:5px;margin-bottom:12px}.layer-info b{white-space:normal}.focus-view{display:flex;flex-direction:column;align-items:stretch;min-height:0;gap:0}.focus-copy{padding:19px 19px 12px}.focus-copy h2{font-size:22px;margin:7px 0 8px}.focus-copy p{font-size:12px;line-height:1.45}.focus-stack{width:100%;height:auto;min-height:390px;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4,88px);gap:8px;padding:14px}.focus-stack canvas{min-height:0;height:88px}.focus-stack.input-mode{height:360px;min-height:0;padding:22px 15%;grid-template-columns:1fr;grid-template-rows:1fr}.focus-stack.input-mode canvas{height:100%;min-height:0}.focus-stack.dense-mode{height:350px;min-height:0;padding:60px 38px;gap:8px}.focus-stack.dense-mode i{width:18px;height:18px}.focus-stack.softmax-mode{height:auto;min-height:390px;padding:18px 14px}.softmax-choice{grid-template-columns:30px 1fr 42px;padding:7px}.softmax-choice span{width:25px;height:25px}
  .network{width:100%;min-height:140px;display:flex;justify-content:flex-start;overflow-x:auto;overflow-y:hidden;padding:25px 10px 12px;gap:3px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.network .stage{min-width:78px;scroll-snap-align:center}.network .flow{min-width:22px}.metrics{display:grid;grid-template-columns:1fr auto;gap:8px;font-size:8px}.metrics strong{grid-column:1/-1;grid-row:1;text-align:center;font-size:10px}.prediction{padding:8px 0 18px}.prediction span{font-size:88px}.scores{max-width:480px;width:100%;margin:auto}.score{font-size:11px;grid-template-columns:18px 1fr 40px}.bar{height:7px}
  footer{padding:15px 18px;font-size:9px;line-height:1.6}footer b{display:block;margin:0 0 3px}
}
@media(max-width:390px){
  header{padding:14px}.panel{padding:14px}.network-panel{padding:14px}.canvas-wrap{width:calc(100vw - 28px);height:calc(100vw - 28px)}
  .focus-stack{grid-template-rows:repeat(4,78px);min-height:350px;padding:10px;gap:7px}.focus-stack canvas{height:78px}.focus-copy{padding:16px 15px 10px}.focus-copy h2{font-size:20px}.focus-stack.input-mode{height:330px}.focus-stack.dense-mode{height:320px;padding:52px 25px}.focus-stack.softmax-mode{min-height:350px;padding:14px 10px}.softmax-choice{grid-template-columns:28px 1fr 38px;gap:7px}
}