Expansion revenue

<div class="stage"><div class="label">SAME ACCOUNTS · ILLUSTRATIVE</div><div class="exp-bars"><div class="exp-column"><div class="exp-base">BASE 100</div><small>START</small></div><div class="exp-column after"><div class="exp-feature">FEATURE +10</div><div class="exp-usage">USAGE +15</div><div class="exp-seats">SEATS +20</div><div class="exp-base">BASE 100</div><small>LATER</small></div></div><div class="hint">EXPANSION = +45</div></div>

.stage{position:relative;width:min(94vw,760px);height:min(88vh,310px);font:800 clamp(10px,max(3.4vmin,1vw),15px)/1.25 sans-serif}.stage *{box-sizing:border-box}.label{font-size:clamp(10px,max(3.4vmin,1vw),12px);letter-spacing:.1em;color:var(--muted)}.accent{color:var(--accent)}.pill{border:1.5px solid var(--fg);border-radius:999px;background:var(--surface);padding:.5em .8em}.hint{position:absolute;right:2%;bottom:0;font-size:clamp(10px,max(3.4vmin,1vw),12px);color:var(--muted)}.exp-bars{position:absolute;left:7%;right:7%;top:17%;bottom:10%;display:flex;align-items:end;justify-content:center;gap:12%}.exp-column{height:100%;width:37%;display:flex;flex-direction:column;justify-content:flex-end;text-align:center}.exp-column>div{display:grid;place-items:center;border:1px solid var(--fg);font-size:clamp(10px,3.4vmin,13px);overflow:hidden;flex:none}.exp-base{height:43%;background:var(--fg);color:var(--bg)}.exp-seats,.exp-usage,.exp-feature{height:14%;background:var(--accent-2);color:#211b19;animation:expand-stack 3s ease-in-out infinite}.exp-usage{background:var(--accent-3);color:var(--bg);animation-delay:.35s}.exp-feature{background:var(--accent);color:white;animation-delay:.7s}.exp-column small{height:15%;flex:none;padding-top:.25em;color:var(--muted);font-size:clamp(10px,3.4vmin,12px)}@keyframes expand-stack{0%,100%{box-shadow:none}50%{box-shadow:0 0 0 2px var(--accent)}}