.matter-wrap{max-width:1200px;margin:auto;padding:0 28px}.matter-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center;padding:64px 0}.matter-hero h1{font-size:clamp(32px,4.2vw,58px);line-height:1.1;margin:18px 0}.matter-hero p{color:var(--muted);font-size:18px}.matter-photo{background:linear-gradient(145deg,#eef9fc,#f5f8fa);border-radius:24px;padding:36px}.matter-photo img{width:100%;max-width:390px;margin:auto;aspect-ratio:1;object-fit:contain}.matter-section{padding:48px 0;border-top:1px solid var(--line)}.matter-section h2{font-size:30px;line-height:1.2}.matter-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.matter-card{border:1px solid var(--line);border-radius:16px;padding:28px;background:#fff}.matter-card h3{font-size:23px;line-height:1.25}.matter-card p{color:var(--muted)}.matter-card .num{font-size:14px;letter-spacing:2px;color:var(--brand-dark);font-weight:700}.matter-colors{display:flex;flex-wrap:wrap;gap:18px;margin:24px 0}.matter-colors span{display:flex;align-items:center;gap:8px}.matter-colors i{width:24px;height:24px;border:1px solid #acb5bd;border-radius:50%;background:var(--swatch)}.matter-note{font-size:14px!important;color:var(--muted);margin-top:20px}.matter-table{width:100%;border-collapse:collapse}.matter-table th,.matter-table td{text-align:left;padding:16px;border-bottom:1px solid var(--line);vertical-align:top}.matter-table th{width:35%}.matter-band{background:#eff9fc;padding:30px;border-radius:18px}.matter-section details{padding:18px 0;border-bottom:1px solid var(--line)}.matter-section summary{font-weight:700;cursor:pointer}.matter-section p{max-width:850px}.matter-hero .actions{display:flex;flex-wrap:wrap;gap:12px}@media(max-width:900px){.matter-grid{grid-template-columns:1fr}.matter-hero{grid-template-columns:1fr;gap:24px;padding:36px 0}.matter-photo img{max-width:300px}.matter-wrap{padding:0 20px}.matter-section{padding:32px 0}.matter-table th{width:40%}.site-nav{gap:12px}}/* Matter range: shared ACMELEC product presentation */
.matter-wrap{max-width:1260px;padding:0 32px}.matter-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;padding-top:28px;font-size:14px;color:var(--muted)}.matter-breadcrumb a:hover{color:var(--brand-dark)}.matter-hero{gap:64px;padding:42px 0 64px;grid-template-columns:1.15fr 1fr}.matter-hero h1{font-size:clamp(32px,3.5vw,52px);letter-spacing:-1.4px;line-height:1.12}.matter-h1-sub{font-size:.7em;letter-spacing:-.6px}.matter-hero p{font-size:17px}.matter-section{padding:56px 0}.matter-section h2{font-size:32px;letter-spacing:-.7px;margin:10px 0 18px}.matter-section>.eyebrow:empty{display:none}.matter-section>p{color:var(--muted);margin-bottom:28px}.matter-card{border-radius:14px;padding:26px}.matter-card h3{font-size:23px;margin:14px 0 12px}.matter-card p{font-size:16px}.matter-grid{margin-top:28px;align-items:stretch}.matter-grid-two{grid-template-columns:repeat(2,minmax(0,1fr))}.matter-product{padding:0;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,border-color .2s}.matter-product:hover{border-color:#89cddd;box-shadow:0 12px 30px #1233440c}.matter-card-photo{display:flex;align-items:center;justify-content:center;background:#fff;padding:32px;border-bottom:1px solid var(--line);height:290px}.matter-card-photo img{width:100%;height:100%;object-fit:contain}.matter-card-body{padding:28px;flex:1;display:flex;flex-direction:column}.matter-card-body .text-link{margin-top:auto;font-weight:700;color:var(--brand-dark)}.matter-label{font-size:12px;letter-spacing:1.2px;font-weight:750;color:var(--brand-dark)}.matter-card-meta{padding:14px 0;border-top:1px solid var(--line);font-size:14px!important}.matter-family{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff}.family-top{padding:20px;display:flex;flex-direction:column;align-items:center}.family-top img{height:195px;width:240px;object-fit:contain}.matter-family span{font-size:13px;color:var(--muted);display:block;text-align:center;font-weight:650}.family-row{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}.family-row>div{padding:24px}.family-row>div+div{border-left:1px solid var(--line)}.family-row img{height:110px;width:100%;object-fit:contain;margin-bottom:16px}.matter-photo{background:#fff;border:1px solid var(--line);padding:32px;border-radius:18px}.matter-photo img{aspect-ratio:auto;height:340px;max-width:100%;object-fit:contain}.matter-device p{text-align:center;border-top:1px solid var(--line);padding-top:20px;margin:24px 0 0;font-size:14px;color:var(--muted)}.matter-tags{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}.matter-tags span{font-size:13px;border:1px solid #c8e4ec;background:#f1fafc;color:#226576;border-radius:6px;padding:6px 10px}.matter-feature-icon{display:inline-flex;background:#e8f7fb;color:var(--brand-dark);width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;font-weight:700}.matter-callout{margin-top:24px;padding:24px 28px;border-left:4px solid var(--brand);background:var(--panel);border-radius:0 12px 12px 0}.matter-callout p{margin:6px 0;color:var(--muted)}.matter-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:14px;overflow:hidden}.matter-flow>div{padding:28px}.matter-flow>div+div{border-left:1px solid var(--line)}.matter-flow span{font-size:14px;font-weight:700;color:var(--brand-dark)}.matter-flow h3{font-size:22px;margin:12px 0}.matter-flow p{margin:0;color:var(--muted)}.matter-split{display:grid;grid-template-columns:1.1fr 1fr;gap:48px}.matter-split h3{font-size:23px}.matter-split p,.matter-checklist li{color:var(--muted)}.matter-checklist{background:var(--panel);padding:12px 28px 24px;border:1px solid var(--line);border-radius:14px}.matter-checklist li{margin:12px 0}.matter-wiring{margin:24px 0;border:1px solid var(--line);border-radius:14px;padding:28px;background:white}.matter-wiring img{width:100%;max-height:460px;object-fit:contain}.matter-wiring figcaption{font-size:14px;color:var(--muted);text-align:center;padding-top:20px}.matter-table{font-size:16px;overflow-wrap:anywhere}.matter-table th{width:32%;font-weight:650}.matter-table tr:nth-child(even){background:#f8fafb}.matter-table thead{background:#edf7fa}.matter-table-scroll{overflow-x:auto}.matter-related-image{width:100%;height:180px;object-fit:contain;margin-bottom:24px}.matter-band{background:#f0f8fb;border:1px solid #d0e8f0;border-radius:14px}.matter-band .actions{display:flex;flex-wrap:wrap;gap:12px}.matter-band h3{font-size:24px;margin-top:0}.matter-section a:focus-visible,.matter-hero a:focus-visible{outline:3px solid var(--brand-dark);outline-offset:4px}.matter-photo .matter-note{margin-bottom:0}
@media(max-width:900px){.matter-hero{grid-template-columns:1fr;gap:30px;padding:32px 0 40px}.matter-wrap{padding:0 20px}.matter-section{padding:36px 0}.matter-section h2{font-size:28px}.matter-grid,.matter-grid-two,.matter-split{grid-template-columns:1fr}.matter-photo img{height:280px}.matter-family{max-width:520px;width:100%;margin:auto}.matter-card-photo{height:260px}.matter-flow{grid-template-columns:1fr}.matter-flow>div+div{border-left:0;border-top:1px solid var(--line)}.matter-flow>div{padding:22px}.matter-split{gap:20px}.matter-wiring{padding:14px}.matter-card-body{padding:24px}.matter-table th,.matter-table td{padding:12px 8px}.matter-table th{width:38%}.matter-table{font-size:14px}.matter-hero h1{letter-spacing:-.8px}.family-row>div{padding:18px}.matter-breadcrumb{padding-top:20px}.matter-card h3{overflow-wrap:anywhere}}

/* AE-5503D installation detail */
.heating-jump{display:flex;flex-wrap:wrap;gap:12px 24px;border-top:1px solid var(--line);padding:22px 0;color:var(--brand-dark);font-weight:650}.heating-jump a:hover{text-decoration:underline}.heating-wiring{margin:28px 0 36px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:white}.heating-wiring-head{padding:24px 32px;background:var(--panel);border-bottom:1px solid var(--line)}.heating-wiring h3{margin:0 0 8px;font-size:24px}.heating-wiring-head p{margin:0;color:var(--muted)}.heating-wiring>a{display:block;padding:26px}.heating-wiring img{width:100%;height:auto;max-width:750px;margin:auto}.heating-wiring figcaption{display:flex;flex-wrap:wrap;gap:18px;align-items:center;padding:20px 32px;border-top:1px solid var(--line);font-size:15px}.heating-install{margin:28px 0;border:1px solid var(--line);padding:24px;border-radius:14px}.heating-install img{width:100%;height:auto}.heating-install figcaption{text-align:center;color:var(--muted);font-size:14px;padding-top:16px}.matter-section[id]{scroll-margin-top:100px}@media(max-width:600px){.heating-wiring-head{padding:20px}.heating-wiring h3{font-size:21px}.heating-wiring>a{padding:8px}.heating-wiring figcaption{padding:18px}.heating-install{padding:10px}.heating-jump{gap:12px 18px;font-size:14px}}