Static site generation

<section class="stage"><div class="heading">BUILD ONCE <span class="hint">serve many times</span></div><div class="ssg"><div class="tile source">CONTENT</div><div class="arrow">→</div><div class="files"><div class="tile file">/home.html</div><div class="tile file">/docs.html</div><div class="tile file">/about.html</div></div><div class="arrow">→</div><div class="requests"><span>visitor A</span><span>visitor B</span></div></div><div class="caption">Prebuilt files answer repeated requests</div></section>

.stage{width:min(94vw,780px);height:min(88vh,322px);padding:clamp(12px,3vmin,20px);border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:0 12px 36px #0001;display:flex;flex-direction:column;gap:clamp(7px,2vmin,14px);font:500 clamp(12px,3.5vmin,17px)/1.3 var(--font-sans,system-ui,sans-serif);overflow:hidden}.heading{display:flex;justify-content:space-between;align-items:center;gap:8px;font-weight:750;color:var(--accent)}.hint{color:var(--muted);font-size:clamp(12px,3.2vmin,14px);font-weight:500}.caption{margin-top:auto;color:var(--muted);font-size:clamp(12px,3.2vmin,14px)}.row{display:flex;gap:clamp(5px,1.5vmin,12px);align-items:center}.tile{padding:clamp(6px,1.8vmin,13px);border:1px solid var(--line);border-radius:9px;background:var(--bg);text-align:center;min-width:0}.arrow{color:var(--accent);font-weight:800}.stage [data-on]{transition:background .3s,border-color .3s,opacity .3s,transform .3s}.stage .on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--surface));color:var(--accent)}.ssg{flex:1;display:flex;align-items:center;justify-content:center;gap:clamp(3px,1.2vmin,12px)}.source{font-weight:700}.files{display:flex;flex-direction:column;gap:5px;min-width:35%}.file{padding:5px 7px;text-align:left;border-left:3px solid var(--accent);opacity:.3;transform:translateX(-10px);transition:opacity .3s,transform .3s}.requests{display:flex;flex-direction:column;gap:7px;color:var(--accent-2);white-space:nowrap}.requests span{opacity:.3;transition:opacity .3s}.stage[data-step="1"] .file,.stage[data-step="2"] .file{opacity:1;transform:none}.stage[data-step="2"] .requests span{opacity:1}.stage small,.stage button,.stage .cards b,.stage .phase b,.stage .pair b,.stage .tree-mini b{font-size:clamp(12px,3.2vmin,14px)!important}

const stage=document.querySelector(".stage");let step=0;function tick(){stage.dataset.step=String(step);step=(step+1)%3}tick();let timer=setInterval(tick,1050);stage.addEventListener("pointerdown",()=>{clearInterval(timer);tick()})