Run Detail

completedmuse-spark-1.3

Unscored

Every model's answer from this round

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Provider

openrouter

Challenge Version

v2.0

Turns

Duration

152.9s

Total Tokens

14,182

Input Tokens

747

Output Tokens

13,435

Reasoning Tokens

4,067

Reasoning Effort

default

Est. Cost

$0.0580

Started

11/3/2026, 10:16:51 PM

OR Provider

Turns (1)

Turn #1

747 in13,435 out4,067 reasoning14,182 total152.9s

user

You make short animated pieces for the web, and you have spent time on the part of the internet that makes cats famous.

Build me a single HTML page: a cat in a living room that lifts off the floor and spins in the air when you click it.

The reference

Make this the Oiia Cat — the spinning cat meme, the one whose loop is written out as "oiia oiia oiiaiooooiai". Match the original's look and feel, not a generic rotation:

A cream-and-white cat sitting square to the camera, eyes wide, staring straight down the lens, doing nothing.
It starts turning on its vertical axis. The turn accelerates until the cat is a blur and the face is no longer readable.
The "oiia" vocal rides the spin. Rate and pitch climb together with it, so the sound is the spin.
In the edits this page is chasing, the cat leaves the floor. It rises as it winds up and spins in midair, and the room gets pulled into whatever the edit is doing.

Build toward what that meme feels like at full speed: too fast, too loud, and funnier every time it goes further.

The build

It opens quiet. The cat sitting in a real living room, doing nothing in particular. Push the realism as far as one file will take you — light that comes from somewhere in the room, depth behind the cat, fur that is not a flat shape, a floor that the cat is actually resting on. Someone arriving on this page should need a second to work out that it is not a photograph. That opening second is the whole joke and it only pays off if the room is convincing first.
Click the cat and it activates: it turns to face the viewer, lifts off the floor, and spins on its vertical axis in midair, fast, with the room going with it.
Every click after that escalates, and escalation here means crazier, not just faster. Four stages at least, each visibly and inventively past the one before — what the cat does, how high it goes, what happens to the room, what happens to the laws of physics, what else joins in. Stage four should be the one that makes someone send the page to a friend. It still has to be worth watching: a strobing white rectangle is not stage four.
It makes the sound. The "oiia" loop, synthesized in the file with Web Audio, rising as the spin gets faster. Making it read as a voice rather than as a tone is most of this requirement.
Sound starts on the click and never before, and I can mute it.

House rules

One file. Everything inline — no CDN, no external stylesheet, font, script or image. data: URIs are fine.
No libraries.
No network at runtime.
No localStorage, sessionStorage, cookies or indexedDB — sandboxed frame, they throw.
Return the file as exactly one fenced html block.

Answer in exactly these sections

The page

The single fenced html block.

The notes

Five bullets.

How the opening frame gets its realism, and where that realism gives out.
What you did to make it read as the Oiia cat rather than as a cat that rotates.
The four stages, in order, and what makes each one crazier than the last.
How the voice is synthesized, and what keeps it locked to the spin.
The part you would fix with more time.

assistant

The page

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>oiia cat — click to spin</title>
<style>
  *{margin:0;padding:0;box-sizing:border-box}
  html,body{height:100%;background:#070607;color:#fff;font-family:Verdana,system-ui,sans-serif;overflow:hidden}
  body{display:flex;align-items:center;justify-content:center;background:radial-gradient(120% 100% at 50% 0%,#1a1518 0%,#070607 60%)}
  #frame{width:min(96vw,920px);user-select:none}
  #topbar{display:flex;justify-content:space-between;align-items:center;padding:10px 4px;font-size:12px;letter-spacing:.14em}
  #stageName{color:#ffdf9e;text-transform:uppercase}
  #stageName b{color:#fff}
  #controls{display:flex;gap:8px;align-items:center}
  button{cursor:pointer;border:1px solid #ffffff33;background:#ffffff14;color:#fff;border-radius:99px;padding:6px 12px;font-size:12px;letter-spacing:.08em}
  button:hover{background:#ffffff2c}
  #stage{position:relative;width:100%;aspect-ratio:16/10;border-radius:18px;overflow:hidden;background:#111;box-shadow:0 30px 100px #000,0 0 0 1px #ffffff18;cursor:default}
  #roomInner{position:absolute;inset:-6%;transform-origin:50% 62%;will-change:transform,filter}
  /* ROOM */
  .wall{position:absolute;left:0;right:0;top:0;height:68%;background:
    linear-gradient(180deg,#00000055 0%,transparent 18%),
    radial-gradient(60% 90% at 22% 20%,#fff6dfcc 0%,#fff6df22 28%,transparent 60%),
    linear-gradient(180deg,#cbb99e 0%,#b8a586 55%,#9c8a6f 68%,#7a6a55 100%)}
  .wall::after{content:"";position:absolute;inset:0;opacity:.35;background:repeating-linear-gradient(0deg,transparent 0 46px,#00000018 46px 48px),repeating-linear-gradient(90deg,transparent 0 86px,#00000010 86px 88px)}
  .baseboard{position:absolute;left:0;right:0;top:calc(68% - 14px);height:14px;background:linear-gradient(#efe6d3,#b9a88d);box-shadow:0 2px 6px #0008}
  .floor{position:absolute;left:-10%;right:-10%;top:68%;bottom:0;background:
    linear-gradient(180deg,#3a2c20 0%,#5a4630 12%,#7a5f42 35%,#8d7050 100%);transform:perspective(600px) rotateX(18deg);transform-origin:top center}
  .floor::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 78px,#00000055 78px 81px),repeating-linear-gradient(0deg,#ffffff10 0 2px,transparent 2px 26px)}
  .floor::after{content:"";position:absolute;inset:0;background:radial-gradient(55% 70% at 50% 18%,#ffedbbaa 0%,transparent 60%)}
  .window{position:absolute;left:6%;top:9%;width:22%;height:44%;background:linear-gradient(#dff1ff,#a9cbe8);border:10px solid #4a3a2a;border-radius:6px;box-shadow:0 0 60px #fff8dcaa,inset 0 0 30px #ffffffaa}
  .window::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 46%,#4a3a2a 46% 54%,transparent 54%),linear-gradient(0deg,transparent 48%,#4a3a2a 48% 52%,transparent 52%)}
  .window::after{content:"";position:absolute;left:10%;top:8%;width:34%;height:30%;background:linear-gradient(#ffffffee,#ffffff00);border-radius:40px;transform:rotate(-18deg)}
  .shaft{position:absolute;left:12%;top:18%;width:46%;height:70%;background:linear-gradient(105deg,#fff3c488 0%,#fff3c422 55%,transparent 75%);clip-path:polygon(10% 0,42% 0,100% 100%,20% 100%);mix-blend-mode:screen;pointer-events:none}
  .sofa{position:absolute;right:5%;top:42%;width:34%;height:28%;transition:transform .3s}
  .sofa .back{position:absolute;left:0;right:0;top:0;height:55%;background:linear-gradient(#7a4a3a,#4e2e24);border-radius:18px 18px 6px 6px;box-shadow:inset 0 4px 8px #ffffff33}
  .sofa .seat{position:absolute;left:2%;right:2%;bottom:8%;height:48%;background:linear-gradient(#9a6350,#6b4235);border-radius:10px;box-shadow:0 10px 20px #000a}
  .sofa .armL,.sofa .armR{position:absolute;top:18%;width:12%;height:74%;background:linear-gradient(#8a5646,#5a352b);border-radius:12px}
  .sofa .armL{left:-2%}.sofa .armR{right:-2%}
  .lamp{position:absolute;right:42%;top:18%;width:8%;height:52%}
  .lamp .pole{position:absolute;left:48%;top:18%;bottom:0;width:6px;background:#2b2118}
  .lamp .shade{position:absolute;top:0;left:0;right:0;height:26%;background:linear-gradient(#ffdf9e,#c99a4a);clip-path:polygon(20% 0,80% 0,100% 100%,0 100%);box-shadow:0 0 50px 18px #ffbe5a66}
  .shelf{position:absolute;left:34%;top:14%;width:26%;height:8%;background:#4a3525;box-shadow:0 6px 12px #000a}
  .shelf::before{content:"";position:absolute;left:6%;right:6%;top:-68%;height:68%;background:linear-gradient(90deg,#7a5a3a 0 12%,#5a7a8a 12% 24%,#a05a5a 24% 38%,#5a8a5a 38% 55%,#8a7a4a 55% 72%,#6a5a8a 72% 100%);box-shadow:0 -2px 0 #0006}
  .rug{position:absolute;left:50%;top:78%;width:52%;height:22%;transform:translateX(-50%);background:radial-gradient(ellipse at center,#a33c3c 0 28%,#d9c9a8 28% 34%,#7a2e2e 34% 62%,#3a1e1e 62% 72%,transparent 72%);border-radius:50%;box-shadow:0 10px 30px #0009}
  .plant{position:absolute;left:4%;top:48%;width:10%;height:22%;background:radial-gradient(circle at 50% 90%,#3a5a2a 0 18%,transparent 19%),radial-gradient(ellipse at 50% 40%,#4a7a35 0 60%,transparent 61%)}
  /* CAT */
  #catZone{position:absolute;left:50%;top:54%;width:300px;height:340px;transform:translateX(-50%);cursor:pointer;z-index:5}
  #catShadow{position:absolute;left:50%;bottom:6px;width:190px;height:34px;transform:translateX(-50%);background:radial-gradient(ellipse,#000c 0%,transparent 70%);filter:blur(2px);z-index:1}
  #lev{position:absolute;inset:0;will-change:transform}
  #catSpin{position:absolute;left:50%;bottom:30px;width:230px;height:290px;transform:translateX(-50%);transform-origin:50% 80%;will-change:transform,filter}
  .ghost{position:absolute;left:50%;bottom:30px;width:230px;height:290px;transform:translateX(-50%);opacity:0;pointer-events:none;filter:blur(6px) saturate(1.4)}
  #catSpin svg,.ghost svg{width:100%;height:100%;display:block;overflow:visible}
  .shade{position:absolute;inset:0;pointer-events:none;border-radius:50%;mix-blend-mode:overlay;opacity:0}
  #halo{position:absolute;left:50%;bottom:40px;width:260px;height:260px;transform:translate(-50%,20%);background:radial-gradient(circle,#ffedbbaa 0%,transparent 65%);opacity:0;pointer-events:none}
  #spinText{position:absolute;left:50%;top:8%;transform:translateX(-50%);font-weight:900;font-size:clamp(18px,4vw,44px);letter-spacing:.1em;color:#fff;text-shadow:0 0 18px #ff9a00,0 2px 0 #000;opacity:0;white-space:nowrap}
  #bigOiia{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.8);font-weight:900;font-size:120px;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:3px #ffffffaa;opacity:0;pointer-events:none}
  .mini{position:absolute;width:64px;height:80px;opacity:0;pointer-events:none;z-index:6}
  .dust{position:absolute;width:5px;height:5px;background:#fff8;border-radius:50%;animation:float 7s linear infinite}
  @keyframes float{0%{transform:translateY(0);opacity:0}15%{opacity:.8}100%{transform:translateY(-180px) translateX(30px);opacity:0}}
  #vignette{position:absolute;inset:0;pointer-events:none;background:radial-gradient(120% 100% at 50% 45%,transparent 55%,#000a 100%);z-index:20}
  #grain{position:absolute;inset:0;opacity:.12;pointer-events:none;z-index:21;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E")}
  #hint{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);font-size:13px;letter-spacing:.12em;background:#000a;padding:8px 16px;border-radius:99px;border:1px solid #ffffff22;z-index:30;white-space:nowrap}
  #hint span{color:#ffdf9e}
  body.s1 #hint,body.s2 #hint,body.s3 #hint,body.s4 #hint{animation:hintPulse .5s infinite alternate}
  @keyframes hintPulse{to{transform:translateX(-50%) scale(1.06)}}
  /* stage looks */
  body.s1 #roomInner{animation:sway 2.2s ease-in-out infinite}
  body.s2 #roomInner{animation:shake .35s linear infinite}
  body.s3 #roomInner{animation:shake .18s linear infinite}
  body.s4 #roomInner{animation:shake .1s linear infinite}
  @keyframes sway{0%,100%{transform:rotate(-1deg) scale(1.03)}50%{transform:rotate(1deg) scale(1.05)}}
  @keyframes shake{0%{transform:translate(0,0) rotate(-1.2deg) scale(1.08)}25%{transform:translate(6px,-5px) rotate(1deg) scale(1.1)}50%{transform:translate(-6px,4px) rotate(-.6deg) scale(1.09)}75%{transform:translate(4px,5px) rotate(.8deg) scale(1.11)}100%{transform:translate(0,0) rotate(-1.2deg) scale(1.08)}}
  #caption{padding:10px 4px 0;font-size:13px;color:#ffffffaa;letter-spacing:.04em;line-height:1.5}
  #caption b{color:#fff}
</style>
</head>
<body class="s0">
<div id="frame">
  <div id="topbar">
    <div id="stageName">STAGE <b id="stNum">0 / IDLE</b> — <span id="stDesc">a cat. doing nothing.</span></div>
    <div id="controls"><button id="muteBtn">🔇 MUTED — CLICK CAT</button><button id="resetBtn">reset</button></div>
  </div>
  <div id="stage">
    <div id="roomInner">
      <div class="wall"></div><div class="baseboard"></div><div class="floor"></div>
      <div class="window"></div><div class="shaft"></div>
      <div class="shelf"></div><div class="plant"></div>
      <div class="lamp" id="lamp"><div class="shade"></div><div class="pole"></div></div>
      <div class="sofa" id="sofa"><div class="back"></div><div class="armL"></div><div class="armR"></div><div class="seat"></div></div>
      <div class="rug"></div>
      <div id="halo"></div>
      <div id="spinText">oiia oiia oiia ooooiai</div>
      <div id="bigOiia">OIIA</div>
      <div id="catZone">
        <div id="catShadow"></div>
        <div id="lev">
          <div class="ghost" id="g1"></div>
          <div class="ghost" id="g2"></div>
          <div id="catSpin">
            <svg viewBox="0 0 230 290" id="catSvg" aria-label="cream cat staring at camera">
              <defs>
                <radialGradient id="fur" cx="45%" cy="35%" r="75%"><stop offset="0%" stop-color="#fff8e8"/><stop offset="45%" stop-color="#f2e4c8"/><stop offset="100%" stop-color="#c9b18d"/></radialGradient>
                <radialGradient id="whiteFur" cx="50%" cy="30%" r="80%"><stop offset="0%" stop-color="#ffffff"/><stop offset="100%" stop-color="#e8dcc5"/></radialGradient>
                <filter id="soft"><feGaussianBlur stdDeviation="0.4"/></filter>
              </defs>
              <!-- TAIL -->
              <g id="tail"><ellipse cx="52" cy="250" rx="34" ry="18" fill="#e9dcc0" stroke="#b89f78" stroke-width="2"/><ellipse cx="52" cy="250" rx="18" ry="9" fill="#fffaf0"/></g>
              <!-- BODY sitting square -->
              <g id="catFront">
                <ellipse cx="115" cy="210" rx="72" ry="68" fill="url(#fur)" stroke="#a68e68" stroke-width="2"/>
                <ellipse cx="115" cy="225" rx="42" ry="52" fill="url(#whiteFur)"/>
                <ellipse cx="88" cy="268" rx="20" ry="16" fill="#f6ecd6" stroke="#a68e68" stroke-width="2"/>
                <ellipse cx="142" cy="268" rx="20" ry="16" fill="#f6ecd6" stroke="#a68e68" stroke-width="2"/>
                <path d="M88 258 l-4 12 M142 258 l4 12" stroke="#8a755a" stroke-width="2"/>
                <!-- HEAD -->
                <ellipse cx="115" cy="115" rx="68" ry="62" fill="url(#fur)" stroke="#a68e68" stroke-width="2"/>
                <polygon points="58,78 48,28 92,52" fill="#e9dcc0" stroke="#a68e68" stroke-width="2"/>
                <polygon points="172,78 182,28 138,52" fill="#e9dcc0" stroke="#a68e68" stroke-width="2"/>
                <polygon points="62,68 56,38 84,54" fill="#f5a8b0"/>
                <polygon points="168,68 174,38 146,54" fill="#f5a8b0"/>
                <!-- stripes -->
                <path d="M95 58 q4 12 0 20 M115 55 q0 14 0 22 M135 58 q-4 12 0 20" stroke="#c9ad82" stroke-width="4" stroke-linecap="round" fill="none" opacity=".7"/>
                <!-- EYES WIDE staring -->
                <g id="eyes">
                  <ellipse cx="86" cy="118" rx="22" ry="24" fill="#fff" stroke="#5a4a35" stroke-width="2"/>
                  <ellipse cx="144" cy="118" rx="22" ry="24" fill="#fff" stroke="#5a4a35" stroke-width="2"/>
                  <ellipse cx="86" cy="120" rx="13" ry="15" fill="#6aa84f"/>
                  <ellipse cx="144" cy="120" rx="13" ry="15" fill="#6aa84f"/>
                  <ellipse cx="86" cy="120" rx="7" ry="11" fill="#0a0a0a"/>
                  <ellipse cx="144" cy="120" rx="7" ry="11" fill="#0a0a0a"/>
                  <circle cx="83" cy="114" r="3.5" fill="#fff"/><circle cx="141" cy="114" r="3.5" fill="#fff"/>
                </g>
                <ellipse cx="115" cy="152" rx="10" ry="7" fill="#e88a96" stroke="#8a4a55" stroke-width="1.5"/>
                <path d="M115 159 q0 8 -10 10 M115 159 q0 8 10 10" stroke="#5a4a35" stroke-width="2" fill="none"/>
                <g stroke="#fff" stroke-width="1.6" opacity=".9"><path d="M40 145 L12 138 M42 155 L14 158 M190 145 L218 138 M188 155 L216 158"/></g>
                <!-- fur tufts -->
                <path d="M60 200 l-8 10 10 -2 -6 12 12 -4 M170 200 l8 10 -10 -2 6 12 -12 -4" stroke="#fffaf0" stroke-width="3" fill="none" opacity=".9"/>
              </g>
              <g id="catBack" style="display:none">
                <ellipse cx="115" cy="200" rx="74" ry="72" fill="#e3d2b2" stroke="#a68e68" stroke-width="2"/>
                <ellipse cx="115" cy="115" rx="66" ry="60" fill="#e3d2b2" stroke="#a68e68" stroke-width="2"/>
                <polygon points="58,78 48,28 92,52" fill="#d9c5a0" stroke="#a68e68" stroke-width="2"/>
                <polygon points="172,78 182,28 138,52" fill="#d9c5a0" stroke="#a68e68" stroke-width="2"/>
                <path d="M80 90 q35 30 70 0 M75 150 q40 35 80 0 M78 210 q37 30 74 0" stroke="#c2a87f" stroke-width="6" fill="none" opacity=".6" stroke-linecap="round"/>
              </g>
              <!-- speed streaks -->
              <g id="streaks" style="display:none" opacity=".55"><rect x="55" y="40" width="12" height="220" rx="6" fill="#fff"/><rect x="85" y="40" width="8" height="220" rx="4" fill="#fff"/><rect x="135" y="40" width="8" height="220" rx="4" fill="#fff"/><rect x="160" y="40" width="12" height="220" rx="6" fill="#fff"/></g>
            </svg>
            <div class="shade" id="cylShade"></div>
          </div>
        </div>
      </div>
      <div id="orbit"></div>
    </div>
    <div id="vignette"></div><div id="grain"></div>
    <div id="hint">👆 <span>click the cat</span> — it only gets worse</div>
  </div>
  <div id="caption"><b>oiia cat.</b> starts as a photo. ends as a weather event. click 4 times. sound on after first click. <span id="lyric">oiia…</span></div>
</div>
<script>
(function(){
  const body=document.body, catZone=document.getElementById('catZone'),
    lev=document.getElementById('lev'), spinEl=document.getElementById('catSpin'),
    g1=document.getElementById('g1'), g2=document.getElementById('g2'),
    shadow=document.getElementById('catShadow'), halo=document.getElementById('halo'),
    spinText=document.getElementById('spinText'), bigOiia=document.getElementById('bigOiia'),
    front=document.getElementById('catFront'), back=document.getElementById('catBack'),
    streaks=document.getElementById('streaks'), cylShade=document.getElementById('cylShade'),
    lyric=document.getElementById('lyric'), stNum=document.getElementById('stNum'),
    stDesc=document.getElementById('stDesc'), hint=document.getElementById('hint'),
    muteBtn=document.getElementById('muteBtn'), resetBtn=document.getElementById('resetBtn'),
    sofa=document.getElementById('sofa'), lamp=document.getElementById('lamp'),
    orbit=document.getElementById('orbit'), stageEl=document.getElementById('stage');

  const svgHTML=document.getElementById('catSvg').outerHTML;
  g1.innerHTML=svgHTML; g2.innerHTML=svgHTML;

  // orbiting minis for stage 3/4
  let minis=[];
  for(let i=0;i<6;i++){let d=document.createElement('div');d.className='mini';d.innerHTML=svgHTML;orbit.appendChild(d);minis.push(d);}

  // dust
  for(let i=0;i<14;i++){let s=document.createElement('div');s.className='dust';s.style.left=(5+Math.random()*90)+'%';s.style.top=(40+Math.random()*55)+'%';s.style.animationDelay=(Math.random()*7)+'s';s.style.animationDuration=(5+Math.random()*6)+'s';stageEl.appendChild(s);}

  const STAGES=[
    {n:'0 / IDLE',d:'a cat. doing nothing.',speed:0,lev:0},
    {n:'1 / LIFTOFF',d:'it leaves the floor. oiia begins.',speed:9,lev:70},
    {n:'2 / OVERDRIVE',d:'blur + ghosts. furniture nervous.',speed:22,lev:125},
    {n:'3 / ORBITAL',d:'face unreadable. room joins the spin.',speed:44,lev:175},
    {n:'4 / ASCENSION',d:'too fast too loud. send to a friend.',speed:76,lev:210}
  ];
  let stage=0, angle=0, speed=0, levY=0, t=0, last=performance.now();
  let muted=false, audioOn=false;

  // ---- AUDIO: formant "oiia" locked to spin phase ----
  let AC=null, master, voiceGain, osc, sub, f1,f2,f3, shaper, delaySend;
  function initAudio(){
    if(AC) return;
    AC=new (window.AudioContext||window.webkitAudioContext)();
    master=AC.createGain(); master.gain.value=0.9; master.connect(AC.destination);
    voiceGain=AC.createGain(); voiceGain.gain.value=0.0;
    shaper=AC.createWaveShaper();
    let curve=new Float32Array(256); for(let i=0;i<256;i++){let x=i/128-1;curve[i]=Math.tanh(2.2*x);}
    shaper.curve=curve;
    voiceGain.connect(shaper); shaper.connect(master);
    // echo for space at high stages
    let dly=AC.createDelay(0.5); dly.delayTime.value=0.19;
    let fb=AC.createGain(); fb.gain.value=0.35;
    dly.connect(fb); fb.connect(dly); dly.connect(master);
    delaySend=AC.createGain(); delaySend.gain.value=0.25; shaper.connect(delaySend); delaySend.connect(dly);
    osc=AC.createOscillator(); osc.type='sawtooth'; osc.frequency.value=150;
    sub=AC.createOscillator(); sub.type='square'; sub.frequency.value=75;
    let subG=AC.createGain(); subG.gain.value=0.25; sub.connect(subG); subG.connect(voiceGain);
    // breath
    let nb=AC.createBuffer(1,AC.sampleRate*1,AC.sampleRate); let ch=nb.getChannelData(0);
    for(let i=0;i<ch.length;i++) ch[i]=Math.random()*2-1;
    let noise=AC.createBufferSource(); noise.buffer=nb; noise.loop=true;
    let ng=AC.createGain(); ng.gain.value=0.06; noise.connect(ng); ng.connect(voiceGain); noise.start();
    // 3 parallel formants fed by buzz
    function bp(q){let b=AC.createBiquadFilter();b.type='bandpass';b.Q.value=q;return b;}
    f1=bp(9);f2=bp(11);f3=bp(12);
    let g1f=AC.createGain();g1f.gain.value=1.0; let g2f=AC.createGain();g2f.gain.value=0.6; let g3f=AC.createGain();g3f.gain.value=0.35;
    osc.connect(f1);osc.connect(f2);osc.connect(f3);
    f1.connect(g1f);g1f.connect(voiceGain); f2.connect(g2f);g2f.connect(voiceGain); f3.connect(g3f);g3f.connect(voiceGain);
    osc.connect(voiceGain); // buzz through
    let lp=AC.createBiquadFilter();lp.type='lowpass';lp.frequency.value=3200;
    // keep simple: osc direct already; start
    osc.start(); sub.start();
    if(AC.state==='suspended') AC.resume();
  }
  function lerp(a,b,k){return a+(b-a)*k;}
  // vowel formants: o,i,a
  const V={o:[480,950,2900],i:[340,2300,3050],a:[800,1250,2600]};
  function vowelAt(ph){ // ph 0..1 = one oiia per revolution
    let F;
    if(ph<0.22){let k=ph/0.22;F=[lerp(V.o[0],V.i[0],k),lerp(V.o[1],V.i[1],k),lerp(V.o[2],V.i[2],k)];}
    else if(ph<0.55){F=V.i;}
    else if(ph<0.8){let k=(ph-0.55)/0.25;F=[lerp(V.i[0],V.a[0],k),lerp(V.i[1],V.a[1],k),lerp(V.i[2],V.a[2],k)];}
    else{let k=(ph-0.8)/0.2;F=[lerp(V.a[0],V.o[0],k),lerp(V.a[1],V.o[1],k),lerp(V.a[2],V.o[2],k)];}
    return F;
  }

  function setStage(s){
    stage=s; body.className='s'+s;
    stNum.textContent=STAGES[s].n; stDesc.textContent=STAGES[s].d;
    hint.innerHTML = s===0 ? '👆 <span>click the cat</span> — it only gets worse'
      : s<4 ? '👆 <span>click again</span> — stage '+(s+1)+' is worse' : '👆 <span>click</span> to calm it down (maybe)';
    if(s===0){muted=false;}
    updateMuteBtn();
  }
  function updateMuteBtn(){
    muteBtn.textContent = !audioOn ? '🔇 MUTED — CLICK CAT' : (muted?'🔇 MUTED':'🔊 OIIA: ON');
  }
  muteBtn.onclick=(e)=>{e.stopPropagation(); if(!audioOn) return; muted=!muted; if(master) master.gain.value=muted?0:0.9; updateMuteBtn();};
  resetBtn.onclick=(e)=>{e.stopPropagation(); setStage(0);};

  catZone.addEventListener('click',()=>{
    initAudio(); audioOn=true; muted=false; if(master) master.gain.value=0.9;
    setStage(stage>=4?0:stage+1);
    if(AC&&AC.state==='suspended') AC.resume();
    updateMuteBtn();
  });

  const words=['oiia','oiia','oiiaiooooiai','OIIA','oiiiaaa','oi-oi-oi'];
  function frame(now){
    let dt=Math.min(0.05,(now-last)/1000); last=now; t+=dt;
    let tgt=STAGES[stage].speed, tgtLev=STAGES[stage].lev;
    speed+=(tgt-speed)*Math.min(1,dt*(stage===0?2.2:1.1));
    levY+=(tgtLev-levY)*Math.min(1,dt*2);
    angle+=speed*dt;

    // idle life when quiet
    let breathe = stage===0 ? Math.sin(t*2.2)*3 : 0;
    let blink = stage===0 && (t%4.2)<0.12 ? 0.12 : 1;

    let c=Math.cos(angle), s=Math.sin(angle);
    let edge=Math.abs(c);
    let thin=Math.max(0.07,edge);
    let stretch = 1+Math.min(0.22,speed*0.0025);
    let wob = stage>=3 ? Math.sin(t*30)*4 : 0;

    // main cat
    let showFront = c>=0;
    front.style.display=showFront?'':'none'; back.style.display=showFront?'none':'';
    let blur = speed>14 ? Math.min(7,(speed-14)/9) : 0;
    spinEl.style.transform=`translateX(-50%) translateY(${-levY}px) rotate(${wob}deg) scaleX(${thin}) scaleY(${stretch})`;
    spinEl.style.filter = blur?`blur(${blur}px) saturate(${1+speed/40})`:'';
    document.getElementById('eyes').style.transform=`scaleY(${blink})`;
    document.getElementById('eyes').style.transformOrigin='center';
    document.getElementById('eyes').style.transformBox='fill-box';
    streaks.style.display = speed>30?'':'none';
    cylShade.style.opacity = stage===0?0:Math.min(0.8,speed/60);
    cylShade.style.background=`linear-gradient(90deg,rgba(0,0,0,.55),transparent 30% 70%,rgba(0,0,0,.55))`;
    // ghosts = delayed angles
    function ghost(el,delay,op){
      if(speed<12||stage<2){el.style.opacity=0;return;}
      let a2=angle-speed*delay, c2=Math.abs(Math.cos(a2));
      el.style.opacity=op; el.style.transform=`translateX(-50%) translateY(${-levY+6}px) scaleX(${Math.max(0.07,c2)}) scaleY(${stretch})`;
    }
    ghost(g1,0.035,stage>=2?0.45:0); ghost(g2,0.07,stage>=3?0.35:0);

    // shadow + halo
    let shScale=Math.max(0.35,1-levY/320), shOp=Math.max(0.08,0.55-levY/380);
    shadow.style.transform=`translateX(-50%) scaleX(${shScale})`;
    shadow.style.opacity=shOp;
    halo.style.opacity=stage===0?0:Math.min(0.9,speed/70);
    halo.style.transform=`translate(-50%,20%) scale(${1+Math.sin(t*8)*0.08+speed/90})`;

    // room extras
    spinText.style.opacity=stage===0?0:Math.min(1,speed/25);
    let reps=Math.floor(2+speed/8);
    spinText.textContent=new Array(reps).fill('oiia').join(' ')+' ooooiai';
    spinText.style.transform=`translateX(-50%) scale(${1+Math.sin(t*(4+speed/6))*0.06})`;
    spinText.style.filter=`hue-rotate(${t*60}deg)`;
    bigOiia.style.opacity=stage>=4?0.85:stage===3?0.3:0;
    bigOiia.style.transform=`translate(-50%,-50%) scale(${1+speed/60+Math.sin(t*10)*0.08}) rotate(${Math.sin(t*3)*6}deg)`;
    // furniture panic
    if(stage>=2){sofa.style.transform=`translate(${Math.sin(t*13)*6}px,${-stage*4+Math.sin(t*17)*4}px) rotate(${Math.sin(t*11)*3}deg)`;lamp.style.transform=`translate(${Math.cos(t*15)*7}px,${-stage*6}px) rotate(${Math.cos(t*12)*4}deg)`;}
    else{sofa.style.transform='';lamp.style.transform='';}
    stageEl.style.filter = stage>=4?`saturate(${1.6+Math.sin(t*6)*0.4}) hue-rotate(${t*40}deg)` : stage===3?`saturate(1.4)`:'';
    // orbiting minis
    minis.forEach((m,i)=>{
      if(stage<3){m.style.opacity=0;return;}
      let n=stage===4?6:3; if(i>=n){m.style.opacity=0;return;}
      m.style.opacity=0.95;
      let R=stage===4?150+i*12:120, a=t*(2+speed/14)+i*(Math.PI*2/n);
      m.style.left=`calc(50% + ${Math.cos(a)*R}px)`; m.style.top=`calc(58% + ${Math.sin(a)*R*0.55 - levY*0.3}px)`;
      m.style.transform=`scaleX(${Math.abs(Math.cos(a*2))||0.2}) rotate(${Math.sin(a)*20}deg)`;
    });
    lyric.textContent = stage===0?'oiia…':('“'+new Array(Math.min(8,2+Math.floor(speed/10))).fill('oiia').join(' ')+'”').slice(0,60);

    // ---- AUDIO locked to spin ----
    if(AC&&audioOn){
      let ph=((angle/(Math.PI*2))%1+1)%1;
      let F=vowelAt(ph);
      let pitch=130+speed*4.6+Math.sin(angle*2)*8+Math.sin(t*30)* (stage>=4?14:4);
      let tt=AC.currentTime;
      osc.frequency.setTargetAtTime(Math.max(60,pitch),tt,0.015);
      sub.frequency.setTargetAtTime(Math.max(30,pitch/2),tt,0.02);
      f1.frequency.setTargetAtTime(F[0]*(pitch/180+0.6),tt,0.012);
      f2.frequency.setTargetAtTime(F[1]*(pitch/220+0.7),tt,0.012);
      f3.frequency.setTargetAtTime(F[2],tt,0.015);
      let loud = stage===0?0:(0.22+Math.min(0.7,speed/90));
      let syll = 0.55+0.45*Math.abs(Math.sin(ph*Math.PI*2));
      voiceGain.gain.setTargetAtTime(muted?0:loud*syll,tt,0.03);
      if(delaySend) delaySend.gain.setTargetAtTime(stage>=3?0.4:0.15,tt,0.1);
    }
    requestAnimationFrame(frame);
  }
  setStage(0); requestAnimationFrame(frame);
})();
</script>
</body>
</html>

The notes

How the opening frame gets its realism, and where that realism gives out: layered living room (window daylight + volumetric shaft, baseboard, perspective floorboards, sofa/lamp/shelf/plant, rug, vignette + SVG grain + dust motes) with directional light from the left and a soft contact shadow under the cat; the cat itself uses radial fur gradients, pink inner ears, whiskers and catchlights. It gives out on close inspection: fur is gradient shading not strands, floor perspective is painted not 3D, and the blink/breathe loop is procedural.
What you did to make it read as the Oiia cat rather than as a cat that rotates: cream-and-white cat sitting square to camera with huge staring eyes locked down the lens; spin is a vertical-axis yaw done as scaleX=|cos(angle)| with a front-face / back-of-head swap at the zero-crossing plus a moving cylindrical shade, so it reads as turning around, not rolling; speed ramps until blur + streaks + ghosts erase the face, with the "oiia" text riding alongside.
The four stages, in order, and what makes each one crazier than the last: 1 LIFTOFF — rises ~70px, slow spin, room sway, halo and shadow shrink; 2 OVERDRIVE — higher, ~3.5 rev/s, motion blur + trailing ghost, furniture jitter; 3 ORBITAL — much higher/faster, face unreadable, shake, orbiting mini-cats and giant OIIA watermark; 4 ASCENSION — max height/speed, heavy blur + double ghosts, hue-cycling saturated room, six orbiting cats, pulsing light pillar and shaking text — absurd but still centered on the cat.
How the voice is synthesized, and what keeps it locked to the spin: Web Audio formant voice — saw + sub-square buzz through three parallel bandpass formants (o/i/a targets) plus breath noise, waveshaper grit and echo; every frame the spin phase angle/2π selects the vowel by morphing F1/F2/F3 through o→i→a, while spin speed sets pitch and loudness, so one revolution literally equals one "oiia" and rate/pitch climb together.
The part you would fix with more time: true volumetric fur and a real 3D room/cylinder cat (multiple sliced views or a generated sprite sheet) so the edge-on frame isn't just a thin squash, plus a sampled-style consonant attack and tighter syllable envelope for a more convincing "oiia" at very high rates.

Attachments

meta/muse-spark-1.3 — page