.heater-catalog .catalog-content{padding-top:48px;padding-bottom:60px}.heater-catalog .catalog-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}.heater-catalog .catalog-heading h2{font-size:32px}.heater-catalog .catalog-heading p{font-size:16px;line-height:1.7;max-width:530px;color:#64748b;margin:0}.heater-brand-grid,.heater-model-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.heater-brand-card{display:flex;flex-direction:column;padding:26px;border:1px solid #dce5ef;border-radius:22px;background:#f5f8fc;transition:box-shadow .2s,transform .2s}.heater-brand-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px #173b6915}.heater-logo-box{height:126px;background:#fff;border:1px solid #e4eaf2;border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:22px;margin-bottom:24px}.heater-logo-box img{width:100%;height:100%;object-fit:contain}.heater-logo-box.maker{background:#172d49}.heater-logo-box.maker img{height:60px}.heater-logo-box small{color:#dce8f5;font-size:11px}.heater-brand-card h2{font-size:27px;margin:0 0 12px}.heater-brand-card p{font-size:15px;color:#64748b;line-height:1.7;margin:0 0 24px}.heater-brand-card .catalog-arrow{margin-top:auto;color:#007ad5;font-size:15px;font-weight:600}.heater-model-card{display:flex;flex-direction:column;border:1px solid #dce5ef;border-radius:20px;overflow:hidden;background:#fff}.heater-model-card>img{width:100%;height:230px;object-fit:contain;background:#f6f8fb;padding:20px}.heater-model-body{padding:24px;display:flex;flex-direction:column;flex:1}.heater-model-body h2{font-size:23px;line-height:1.3;letter-spacing:-.4px;margin:0 0 14px}.heater-model-body p{font-size:15px;line-height:1.7;color:#64748b;margin:0 0 16px}.heater-model-body ul{padding-left:19px;font-size:14px;line-height:1.8;color:#344b61;margin:0 0 24px}.heater-model-body .btn{margin-top:auto;width:100%;justify-content:center;padding:14px 18px}.heater-catalog .catalog-back{display:inline-block;color:#007ad5;font-size:15px;margin-bottom:30px}.heater-catalog .catalog-note{padding:26px;background:#f1f5fc;border-radius:18px;font-size:16px;line-height:1.7;margin-top:34px;color:#526779}.heater-catalog .catalog-note a{color:#007ad5}.heater-catalog .brand-intro-logo{max-width:300px;height:90px;object-fit:contain;margin-bottom:26px}.heater-catalog .catalog-source{font-size:13px;line-height:1.7;color:#64748b;margin-top:25px}.heater-catalog .catalog-source a{color:#007ad5}@media(max-width:1050px){.heater-brand-grid,.heater-model-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:650px){.heater-brand-grid,.heater-model-grid{grid-template-columns:1fr;gap:18px}.heater-catalog .catalog-content{padding-top:30px;padding-bottom:40px}.heater-catalog .catalog-heading{display:block}.heater-catalog .catalog-heading h2{font-size:27px;margin-bottom:16px}.heater-brand-card{padding:22px}.heater-logo-box{height:125px}.heater-model-card>img{height:220px}.heater-catalog .page-hero h1{font-size:32px}}