Post-purchase experience

<div class="post"><div class="post-steps"><label><input type="checkbox" checked>DELIVERY UPDATE</label><label><input type="checkbox">FIRST-USE GUIDE</label><label><input type="checkbox">FAST SUPPORT</label></div><div class="post-result"><small>RETURN INTENT / EXAMPLE</small><strong id="post-score">40</strong><div class="post-gauge"><i id="post-bar"></i></div></div></div>

.post{width:min(88%,680px);display:grid;grid-template-columns:1.4fr 1fr;gap:clamp(10px,4vmin,32px);align-items:center;font:800 clamp(10px,max(2vmin,1vw),16px)/1.2 sans-serif}.post-steps{display:grid;gap:clamp(7px,2vmin,16px)}.post-steps label{display:flex;gap:8px;align-items:center;padding:clamp(8px,2vmin,15px);border:2px solid var(--line);cursor:pointer}.post-steps label:has(input:checked){border-color:var(--accent);background:var(--surface)}.post input{accent-color:var(--accent);width:clamp(12px,2.5vmin,20px);height:clamp(12px,2.5vmin,20px)}.post-result{display:grid;gap:clamp(5px,2vmin,12px)}.post-result small{color:var(--muted)}.post-result strong{font:900 clamp(28px,9vmin,72px)/1 sans-serif;color:var(--accent)}.post-gauge{height:clamp(8px,2vmin,16px);background:var(--line)}.post-gauge i{display:block;background:var(--accent);height:100%;width:40%;transition:width .4s}small{font-size:max(.833em,10px,1vw)}

const boxes=[...document.querySelectorAll('.post input')];function update(){const score=25+boxes.filter(b=>b.checked).length*15;document.getElementById('post-score').textContent=score;document.getElementById('post-bar').style.width=score+'%'}boxes.forEach(b=>b.onchange=()=>{clearInterval(auto);update()});update();let i=1;const auto=setInterval(()=>{boxes[i].checked=!boxes[i].checked;i=i===2?1:2;update()},1500);