GenAI semantic conventions

<div class="demo"><div class="title">MODEL CALL SPAN</div><div class="scene"><div class="call">generate response</div><div class="attrs"><span>model = atlas-small</span><span>input = 420 tokens</span><span>output = 96 tokens</span></div></div></div>

.demo{width:min(94vw,690px);height:min(88vh,320px);box-sizing:border-box;padding:clamp(9px,2.5vmin,18px);border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--fg);font:600 clamp(12px,2.4vmin,16px)/1.25 var(--font-sans,"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,sans-serif);display:flex;flex-direction:column;gap:clamp(7px,2vmin,14px);overflow:hidden}.title{color:var(--accent);font:700 clamp(12px,2.4vmin,16px)/1.2 var(--font-sans,"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,sans-serif);letter-spacing:.04em}.scene{flex:1;min-height:0;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.scene{flex-direction:column;gap:8px}.call{width:90%;box-sizing:border-box;text-align:center;padding:10px;border:1px solid var(--accent);border-radius:7px;background:color-mix(in srgb,var(--accent) 15%,var(--surface))}.attrs{width:90%;display:grid;gap:5px}.attrs span{padding:5px 8px;border-left:3px solid var(--accent-2);background:var(--bg);font:600 clamp(12px,2.4vmin,15px)/1 ui-monospace,monospace;white-space:nowrap;overflow:hidden;animation:attach 2.5s infinite}.attrs span:nth-child(2){animation-delay:.3s}.attrs span:nth-child(3){animation-delay:.6s}@keyframes attach{0%,15%,100%{transform:translateX(4px);border-color:var(--line);background:var(--bg)}35%,85%{transform:translateX(0);border-color:var(--accent-2);background:color-mix(in srgb,var(--accent-2) 15%,var(--surface))}}