/* Shared Air & Climate family: content headings follow the approved 48 / 36 px scale. */
.ac-hero{padding-block:3.5rem 2.5rem!important;background:linear-gradient(135deg,#f6f3ff,#fff 80%)}
.ac-hero h1{font-size:48px!important;line-height:1.1;max-width:950px;letter-spacing:-.035em;margin:0 0 1.3rem;hyphens:manual}.ac-hero .lead,.ac-overview .lead,.ac-page .lead{max-width:840px;font-size:1.17rem;line-height:1.65}.ac-page main h2,.ac-overview h2,.ac-quality-title h2{font-size:36px!important;line-height:1.18}
.ac-subnav{display:flex;align-items:center;gap:1.5rem;padding-block:1.1rem;border-bottom:1px solid #e0dcef;font-size:.93rem}.ac-subnav .ac-parent{font-weight:750;color:#102f47}.ac-subnav>div{display:flex;gap:.55rem;margin-left:auto;flex-wrap:wrap}.ac-subnav>div a{padding:.6rem .9rem;border-radius:8px;text-decoration:none}.ac-subnav [aria-current]{background:#eeebff;color:#4930df;font-weight:700}
.ac-overview{padding-top:2.5rem!important}.ac-figure{margin:1.7rem 0 0;background:#fff;border:1px solid #dce4ea;border-radius:18px;overflow:hidden;max-width:100%;width:auto}.ac-figure>a{display:block;background:#f4f7fa}.ac-figure img{display:block;width:100%;height:auto;border-radius:0;object-fit:contain}.ac-figure figcaption{display:block;padding:1.25rem 1.5rem;color:#456075;font-size:.94rem;line-height:1.6}.ac-figure figcaption .text-link{font-size:.94rem;margin:0}.ac-caption{font-size:.88rem!important;color:#526577;line-height:1.6;margin:.85rem 0 0}
.ac-legend{display:flex;gap:.7rem 1.5rem;flex-wrap:wrap;padding:0;margin:0 0 1rem;list-style:none}.ac-legend li{display:flex;align-items:center;gap:.5rem;font-size:.85rem}.ac-line{width:26px;height:0;border-top:4px solid #087f91;display:inline-block;flex-shrink:0}.ac-line-1{border-color:#b87320}.ac-line-2{height:6px;border-top:2px solid #c55750;border-bottom:2px solid #426ea4}.ac-line-3{border-color:#96869e}.ac-line-4{border-top:3px dotted #9b83d7}.ac-line-5{height:12px;border:2px dashed #735bd4}
.ac-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:2rem}.ac-card{display:block;border:1px solid #d8ddeb;border-radius:14px;padding:1.5rem;color:#14354d;background:#fff;text-decoration:none!important;transition:border-color .15s}.ac-card:hover{border-color:#7054fa}.ac-card h3{font-size:1.35rem;margin:.65rem 0}.ac-card p{font-size:1rem;line-height:1.6;color:#4e6576;margin:0 0 .5rem}.ac-count{color:#6246ef;font-size:.85rem;font-weight:750}.ac-card>span:last-child{color:#6246ef}.ac-quality-title{padding-top:1rem}.ac-old-diagram{margin-block:1.5rem}.ac-old-diagram .section{padding:1.5rem 0!important}.ac-old-diagram .wrap{width:100%;max-width:100%}.ac-old-diagram .diagram-orientation{display:none}
.ac-details{border:1px solid #d9d7e8;border-radius:10px;margin-top:1rem;padding:0 1.2rem;background:white;color:#17374e}.ac-details>summary{cursor:pointer;font-weight:700;color:#4e35d3;padding:1.1rem 0;line-height:1.4}.ac-details[open]{padding-bottom:1rem}.ac-details>p{line-height:1.7;margin:.4rem 0 0}.ac-parts{display:grid;grid-template-columns:1fr 1fr;gap:1rem 2rem;margin:1rem 0 0;padding-left:1.6rem}.ac-parts li::marker,.ac-flow-parts li::marker{font-weight:750;color:#493ac8}.ac-parts p{font-size:.95rem;line-height:1.65;margin:.3rem 0}.ac-parts strong{color:#17374e}
.ac-configurations{padding-top:0!important}.ac-picker{border:0;margin:0 0 2rem;padding:0}.ac-picker legend{font-size:1rem;font-weight:700;margin-bottom:1rem}.ac-picker>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.ac-choice{border:1px solid #d8ddeb;border-radius:12px;display:grid;grid-template-columns:22px 1fr;align-items:center;gap:.55rem;cursor:pointer;overflow:hidden;padding:0 1rem 1rem;background:white}.ac-choice img{grid-column:1/-1;width:calc(100% + 2rem);height:auto;max-height:135px;object-fit:contain;margin:0 -1rem .35rem;grid-row:1}.ac-choice input{accent-color:#5134ed;width:18px;height:18px;margin:0}.ac-choice span{font-size:.97rem;line-height:1.4;font-weight:650}.ac-choice:has(input:checked){border:2px solid #7355fb;background:#f6f3ff;padding-bottom:calc(1rem - 1px)}.ac-choice:focus-within{outline:3px solid #a896ff;outline-offset:3px}.ac-panel-intro{display:grid;grid-template-columns:1fr 1.65fr;gap:2rem;align-items:start}.ac-panel-intro h3{font-size:1.6rem;line-height:1.25;margin:.3rem 0}.ac-panel-intro p{margin:0;line-height:1.7;color:#456075}.ac-panel[hidden]{display:none!important}.ac-panel{margin-block:2rem}.ac-optional{font-size:.95rem;color:#4c6577;max-width:850px;margin:1.2rem 0 0}.ac-tint{background:#f4f7fa}.ac-modes{margin:1.6rem 0}.ac-modes h3{font-size:1.4rem}.ac-modes ol{display:grid;grid-template-columns:1fr 1fr;gap:1rem 2rem;padding-left:1.5rem;line-height:1.6}.ac-technical .ac-figure{border:0;margin-top:.5rem}.ac-technical .ac-figure figcaption{padding:1rem 0}.ac-flow-parts{display:grid;grid-template-columns:1fr 1fr;gap:1rem 2rem;padding-left:1.6rem}.ac-priority{font-weight:700;color:#5140a4;font-size:1.1rem;line-height:1.7}.ac-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2rem;margin:2rem 0}.ac-notes h3{font-size:1.22rem;line-height:1.3}.ac-notes p{font-size:.98rem;line-height:1.7}.ac-sources{font-size:.82rem;margin:1.5rem 0}.ac-page .hero-actions{gap:1.5rem;margin-top:2rem}
@media(max-width:760px){.ac-subnav{align-items:flex-start;flex-direction:column;gap:.5rem}.ac-subnav>div{margin-left:0;gap:.3rem}.ac-subnav>div a{padding:.5rem .6rem}.ac-hero{padding-block:2.5rem 1.5rem!important}.ac-cards,.ac-notes{grid-template-columns:1fr}.ac-panel-intro{grid-template-columns:1fr;gap:.6rem}.ac-picker>div{gap:.5rem}.ac-choice{padding:0 .5rem .6rem;grid-template-columns:1fr;text-align:center;gap:.3rem}.ac-choice:has(input:checked){padding-bottom:calc(.6rem - 1px)}.ac-choice input{margin:auto}.ac-choice img{width:calc(100% + 1rem);margin:0 -.5rem}.ac-choice span{font-size:.86rem;overflow-wrap:anywhere}.ac-parts,.ac-flow-parts,.ac-modes ol{grid-template-columns:1fr}.ac-figure figcaption{padding:1rem}.ac-legend{gap:.6rem 1rem}.ac-details{padding-inline:.9rem}.ac-notes{gap:1rem}.ac-hero h1{overflow-wrap:anywhere}}
@media(prefers-reduced-motion:reduce){.ac-card{transition:none}}