고객획득비용 (CAC)

<div class="cac"><div class="formula"><div>ACQUISITION COST <b>$1,200</b></div><span>÷</span><div>NEW CUSTOMERS <b id="customers">12</b></div></div><div class="answer">CAC <strong id="value">$100</strong></div><div class="control"><span>NEW CUSTOMERS</span><input id="range" type="range" min="6" max="24" value="12"></div></div>

.cac{width:min(85%,550px);font:850 clamp(10px,max(2vmin,1vw),14px)/1.2 sans-serif}.formula{display:flex;align-items:center;justify-content:space-between;gap:clamp(5px,2vmin,18px);color:var(--muted)}.formula>div{display:grid;gap:clamp(6px,1.5vmin,12px);flex:1}.formula b{color:var(--fg);font-size:clamp(18px,5vmin,35px)}.formula span{font-size:clamp(20px,6vmin,40px);color:var(--accent)}.answer{display:flex;align-items:baseline;justify-content:space-between;border-top:2px solid var(--fg);border-bottom:2px solid var(--fg);margin:clamp(12px,3vmin,23px) 0;padding:clamp(6px,1.5vmin,12px) 0}.answer strong{font-size:clamp(35px,9vmin,65px);color:var(--accent)}.control{display:flex;align-items:center;gap:10px}.control span{white-space:nowrap;color:var(--muted);font-size:clamp(10px,max(1.5vmin,1vw),12px)}input{flex:1;min-width:0;accent-color:var(--accent)}

const range=document.querySelector('#range');function draw(){document.querySelector('#customers').textContent=range.value;document.querySelector('#value').textContent='$'+Math.round(1200/Number(range.value))}range.oninput=()=>{clearInterval(timer);draw()};let dir=1;const timer=setInterval(()=>{const n=Number(range.value)+dir*2;if(n>=24||n<=6)dir*=-1;range.value=String(Math.max(6,Math.min(24,n)));draw()},520);draw();