CDN edge cache

<div class="n-demo"><div class="n-head"><strong>EDGE CACHE ROUTE</strong><span>LIVE TRACE</span></div><div class="n-stage"><div class="edge"><div class="n-box">USER</div><div class="edge-path"><i id="edge-line"></i><span id="edge-label">MISS</span></div><div class="n-box" id="edge-edge">EDGE</div><div class="edge-path"><i id="origin-line"></i></div><div class="n-box" id="edge-origin">ORIGIN</div></div></div><div class="n-foot">tap to step · auto replay</div></div>

.n-demo{width:min(94vw,760px);height:min(88vh,324px);padding:clamp(9px,2.2vmin,18px);border:1px solid var(--line);border-radius:13px;background:var(--surface);display:flex;flex-direction:column;gap:clamp(5px,1.3vmin,10px);font:600 clamp(12px,2.4vmin,16px)/1.3 "Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo",sans-serif;overflow:hidden}.n-head,.n-foot{display:flex;justify-content:space-between;align-items:center;color:var(--muted)}.n-head strong{color:var(--accent)}.n-head span,.n-foot{font-size:12px}.n-stage{flex:1;min-height:0;position:relative;display:flex;align-items:center;justify-content:center;gap:clamp(4px,1vmin,10px)}.mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.n-box{padding:clamp(5px,1.5vmin,11px);border:1px solid var(--line);border-radius:8px;background:var(--bg);text-align:center}.n-on{border-color:var(--accent)!important;color:var(--accent)!important;background:color-mix(in srgb,var(--accent) 12%,var(--surface))!important}.n-muted{color:var(--muted)}@media(max-width:400px){.n-head span{display:none}}.edge{width:96%;display:flex;align-items:center;gap:4px}.edge>.n-box{min-width:19%}.edge-path{flex:1;height:3px;background:var(--line);position:relative}.edge-path i{position:absolute;left:0;top:0;width:0;height:100%;background:var(--accent);transition:width .45s}.edge-path span{position:absolute;left:0;top:8px;font-size:12px;color:var(--accent)}

let hit=false;function advance(){hit=!hit;document.getElementById('edge-line').style.width='100%';document.getElementById('origin-line').style.width=hit?'0':'100%';document.getElementById('edge-label').textContent=hit?'HIT':'MISS';document.getElementById('edge-origin').style.opacity=hit?'.35':'1';document.getElementById('edge-edge').classList.toggle('n-on',hit)}
const clickTarget=document.querySelector('.n-demo');if(clickTarget&&typeof advance==='function'){advance();const timer=setInterval(advance,1050);clickTarget.addEventListener('pointerdown',()=>{clearInterval(timer);advance()})}