.demo-page .hero h1{font-size:clamp(2.55rem,5.5vw,5.3rem)}
.demo-page .lede{max-width:65ch}.demo-stats,.demo-scorecard{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--line);margin:30px 0}.demo-stats>div,.demo-scorecard>div{padding:20px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:8px}.demo-stats>div:last-child,.demo-scorecard>div:last-child{border:0}.demo-stats strong{font-size:2.4rem;line-height:1}.demo-stats span,.demo-scorecard span{font-size:.85rem}.demo-scorecard span{font-family:var(--mono);color:var(--muted)}
.demo-brief{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;padding:26px;background:var(--paper);border:1px solid var(--ink)}.demo-brief h2{font-size:1.65rem;margin:8px 0 12px}.demo-brief p{margin:0;line-height:1.6}.demo-brief ul{padding-left:20px;margin:0;line-height:1.8}.demo-disclosure{margin:22px 0}.demo-disclosure summary,.ad-details summary{cursor:pointer;font-weight:700}.demo-disclosure p{max-width:75ch;line-height:1.6}
.demo-tools{display:flex;gap:14px;align-items:end;flex-wrap:wrap}.demo-tools label{display:flex;flex-direction:column;gap:8px;font-size:.85rem;font-weight:700;min-width:0;flex:1 1 180px}.demo-tools select{max-width:100%;width:100%;padding:12px 30px 12px 10px;font:inherit;background:var(--paper);border:1px solid var(--ink);color:var(--ink)}.demo-secondary,.scenario-buttons button{appearance:none;background:var(--paper);color:var(--ink);border:1px solid var(--ink);padding:12px 15px;font:inherit;font-size:.85rem;font-weight:700;cursor:pointer;text-decoration:none;min-height:44px}.demo-secondary:hover,.scenario-buttons button:hover{background:var(--yellow)}.demo-secondary[aria-pressed=true],.scenario-buttons button[aria-pressed=true]{background:var(--blue);color:#fff}.demo-secondary:disabled,.demo-tools button:disabled{opacity:.45;cursor:default}.demo-caption{font-size:.82rem;color:var(--muted);line-height:1.55}.demo-status{font-family:var(--mono);font-size:.8rem;line-height:1.6;margin:24px 0 14px}.ad-library{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.ad-card{background:var(--paper);border:1px solid var(--ink);padding:22px;display:flex;flex-direction:column;gap:16px;min-width:0}.ad-card .spec-code{font-size:.65rem;line-height:1.5;margin:0;color:var(--blue)}.ad-card h3{font-size:1.5rem;line-height:1.15;margin:0;letter-spacing:-.04em}.ad-primary{font-size:.95rem;line-height:1.6;margin:0}.ad-cta{font-family:var(--mono);font-size:.75rem;margin:0}.ad-details{font-size:.8rem;line-height:1.6;margin-top:auto}.ad-card>.demo-secondary{align-self:start}.demo-pagination{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:22px}.demo-pagination span{font-family:var(--mono);font-size:.75rem}.shortlist-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}.shortlist-head>div{display:flex;flex-wrap:wrap;gap:10px}.shortlist-head>p{font-family:var(--mono);font-size:.8rem}.shortlist{display:grid;gap:8px;margin:20px 0}.shortlist-item{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);padding:12px;background:var(--paper)}.shortlist-item p{margin:0;line-height:1.4}.shortlist-item button{flex-shrink:0;padding:8px;min-height:44px}.test-builder{padding:26px;border:1px solid var(--ink);background:var(--paper)}.test-builder>h3{font-size:1.8rem;letter-spacing:-.04em;margin:0 0 16px}.test-builder>p{line-height:1.65}.test-builder .demo-tools label{flex-basis:100%;max-width:100%}.test-builder .demo-tools button{margin-top:4px}.demo-error{color:#922222;font-weight:700;min-height:1em}.test-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.test-card{padding:20px;background:#fff;border:1px solid var(--ink);min-width:0}.test-headline{font-size:1.4rem;line-height:1.2;letter-spacing:-.03em;margin:18px 0 12px}.test-body{font-size:.9rem;line-height:1.6}.visual-placeholder{padding:28px 14px;border:1px dashed var(--muted);font-family:var(--mono);font-size:.7rem;line-height:1.6;background:repeating-linear-gradient(45deg,transparent,transparent 8px,#00000005 8px,#00000005 9px)}.test-conditions{border-top:1px solid var(--line);margin-top:26px;padding-top:20px}.test-conditions h4{margin:0 0 10px}.test-conditions p{font-size:.85rem;line-height:1.6}.scenario-heading{font-size:1.6rem;letter-spacing:-.03em}.scenario-buttons{display:flex;flex-wrap:wrap;gap:10px}.scenario-result{border-left:4px solid var(--blue);background:var(--paper);padding:20px 24px;margin:20px 0}.scenario-result h4{font-size:1.25rem;margin:0 0 12px}.scenario-result p{line-height:1.7;margin:0;max-width:75ch}.demo-page button:focus-visible,.demo-page select:focus-visible,.demo-page summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
@media(max-width:1100px){.demo-stats,.demo-scorecard{grid-template-columns:repeat(2,minmax(0,1fr))}.demo-stats>div,.demo-scorecard>div{border-bottom:1px solid var(--line)}.demo-stats>div:nth-child(2),.demo-scorecard>div:nth-child(2){border-right:0}.demo-stats>div:nth-child(3),.demo-scorecard>div:nth-child(3){border-bottom:0}.demo-brief{grid-template-columns:1fr;gap:20px}}
@media(max-width:680px){.ad-library,.test-pair{grid-template-columns:1fr}.demo-stats>div,.demo-scorecard>div{padding:14px}.demo-stats strong{font-size:2rem}.demo-brief,.test-builder,.ad-card{padding:18px}.demo-tools{align-items:stretch}.demo-tools label{flex-basis:100%}.demo-tools>a,.demo-tools>button{text-align:center;flex:1 1 auto}.shortlist-item{align-items:start;flex-direction:column}.demo-pagination{flex-wrap:wrap}.scenario-buttons button{flex:1 1 100%;text-align:left}.demo-page .hero h1{font-size:clamp(2.15rem,9vw,3.8rem)}}