:root{--night: 0}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:#0a0a0f;font-family:Instrument Sans,sans-serif;color:#c8c8d0}#canvas{display:block;width:100%;height:100%}#ui{position:fixed;bottom:20px;left:50%;transform:translate(-50%);display:flex;gap:12px;align-items:center;z-index:10;pointer-events:none}#controls{display:flex;gap:10px;align-items:center;background:color-mix(in srgb,rgba(10,10,15,.85),rgba(5,5,35,.9) calc(var(--night) * 100%));-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:10px 18px;border-radius:12px;border:1px solid color-mix(in srgb,rgba(255,255,255,.06),rgba(60,60,180,.2) calc(var(--night) * 100%));pointer-events:auto;transition:background .8s,border-color .8s}#controls button{background:color-mix(in srgb,rgba(255,255,255,.08),rgba(40,40,120,.25) calc(var(--night) * 100%));border:1px solid color-mix(in srgb,rgba(255,255,255,.1),rgba(60,60,180,.3) calc(var(--night) * 100%));color:color-mix(in srgb,#c8c8d0,#8888cc calc(var(--night) * 100%));padding:6px 16px;border-radius:6px;font-family:JetBrains Mono,monospace;font-size:12px;cursor:pointer;transition:background .3s,border-color .3s,color .8s}#controls button:hover{background:color-mix(in srgb,rgba(255,255,255,.14),rgba(60,60,160,.35) calc(var(--night) * 100%));border-color:color-mix(in srgb,rgba(255,255,255,.2),rgba(80,80,200,.4) calc(var(--night) * 100%))}#speed-label{display:flex;align-items:center;gap:8px;font-family:JetBrains Mono,monospace;font-size:12px;color:color-mix(in srgb,#888,#6666aa calc(var(--night) * 100%));transition:color .8s}#speed-slider{width:80px;accent-color:color-mix(in srgb,#ff2e2e,#6644cc calc(var(--night) * 100%))}#speed-value{min-width:28px;text-align:right;font-variant-numeric:tabular-nums}#stats{display:none}#btn-help{width:30px;height:30px;padding:0;display:inline-flex;align-items:center;justify-content:center;font-family:Instrument Sans,sans-serif;font-weight:700;font-size:15px;border-radius:50%}#help-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fade-in .2s ease-out}#help-overlay.hidden{display:none}@keyframes fade-in{0%{opacity:0}to{opacity:1}}#help-modal{position:relative;max-width:520px;width:90%;max-height:80vh;overflow-y:auto;background:#12121a;border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:32px 36px;color:#c8c8d0;font-family:Instrument Sans,sans-serif;font-size:14px;line-height:1.65;animation:modal-in .25s ease-out}@keyframes modal-in{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}#help-modal h2{font-family:JetBrains Mono,monospace;font-size:18px;font-weight:700;color:#ff2e2e;margin-bottom:16px;text-transform:uppercase;letter-spacing:.05em}#help-modal h3{font-family:JetBrains Mono,monospace;font-size:13px;font-weight:700;color:#888;margin-top:20px;margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}#help-modal p{margin-bottom:12px}#help-modal strong{color:#e8e8f0}#help-modal ul{list-style:none;padding-left:0;margin-bottom:12px}#help-modal ul li{padding-left:16px;position:relative;margin-bottom:4px}#help-modal ul li:before{content:"▸";position:absolute;left:0;color:#ff2e2e}#help-modal table{width:100%;border-collapse:collapse}#help-modal table td{padding:5px 8px;border-bottom:1px solid rgba(255,255,255,.05)}#help-modal table td:first-child{white-space:nowrap;color:#e8e8f0;font-family:JetBrains Mono,monospace;font-size:12px}#help-modal kbd{background:#ffffff14;border:1px solid rgba(255,255,255,.12);border-radius:4px;padding:1px 6px;font-family:JetBrains Mono,monospace;font-size:11px}#help-close{position:absolute;top:12px;right:16px;background:none;border:none;color:#666;font-size:24px;cursor:pointer;line-height:1;transition:color .2s}#help-close:hover{color:#ccc}