/* Presentation layer; existing operational UI is preserved. */
.demo-welcome{background:#f8f7f1;border-bottom:1px solid #d8dece;color:#19342d}.demo-welcome summary{display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;padding:18px max(20px,calc((100vw - 1180px)/2));font-weight:650;letter-spacing:2px;font-size:15px}.demo-welcome summary small{display:block;font-size:8px;letter-spacing:2.2px;color:#65786d;margin-top:5px}.demo-badge{font-size:10px;font-weight:500;letter-spacing:.3px;background:#e7eee4;border-radius:20px;padding:9px 12px;text-align:center}.demo-intro{display:grid;grid-template-columns:1.05fr 1fr;gap:65px;max-width:1220px;padding:38px 20px 30px;margin:auto}.demo-kicker{font-size:11px;letter-spacing:1px;text-transform:uppercase;color:#637c69}.demo-intro h1{font-family:Georgia,serif;font-size:clamp(32px,4vw,48px);font-weight:400;letter-spacing:-1.4px;line-height:1.13}.demo-lead{font-size:14px;max-width:470px;color:#607267}.demo-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.demo-actions button{min-height:44px}.demo-small{font-size:11px;line-height:1.6;color:#62766a;margin:12px 0 0}.demo-guide-card{background:white;border:1px solid #dfe4d9;border-radius:18px;padding:27px}.demo-guide-card h2{font-size:16px;margin-bottom:20px}.demo-guide-card ol{padding-left:22px;margin-bottom:0}.demo-guide-card li{font-size:12px;line-height:1.7;color:#68796d;padding:0 0 14px 6px}.demo-guide-card li:last-child{padding-bottom:0}.demo-guide-card strong{display:block;color:#23483b}.demo-footnotes{display:grid;grid-template-columns:1fr 1fr;gap:40px;max-width:1220px;margin:auto;padding:0 20px 26px}.demo-footnotes strong{font-size:11px}.demo-footnotes p{font-size:11px;line-height:1.6;color:#68796d;margin:6px 0 0}.demo-connection{background:#f6e5c9;padding:12px 20px;margin:0;font-size:12px}[hidden]{display:none!important}@media(max-width:760px){.demo-welcome summary{padding:14px 16px;gap:12px}.demo-welcome summary>span:first-child{font-size:12px}.demo-badge{font-size:9px;max-width:150px;line-height:1.5}.demo-intro{grid-template-columns:1fr;gap:22px;padding:25px 20px}.demo-intro h1{font-size:35px}.demo-guide-card{padding:20px}.demo-footnotes{grid-template-columns:1fr;gap:18px;padding:0 20px 24px}.demo-actions{flex-direction:column}.demo-actions .btn{width:100%}}