:root{--product-brand:#2256e5;--product-brand-dark:#1745c5;--product-text:#2b3038;--product-muted:#747b86;--product-line:#d9dde4;--product-soft:#f4f6f9}
.product-bisen-page{color:var(--product-text);background:#fff}
.product-bisen-banner{position:relative;width:100%;height:clamp(300px,37.5vw,540px);overflow:hidden;background:#eef2f7}
.product-bisen-banner picture,.product-bisen-banner img{display:block;width:100%;height:100%}
.product-bisen-banner img{object-fit:cover;object-position:center}
.product-bisen-banner__title{position:absolute;z-index:2;inset:0;display:flex;align-items:center;justify-content:center;padding:20px;text-align:center}
.product-bisen-banner__title h1{margin:0;color:#233246;font-size:42px;font-weight:700;line-height:1.25;letter-spacing:0;text-shadow:0 2px 12px rgba(255,255,255,.8)}
.product-bisen-banner__title h1:after{content:"";display:block;width:74px;height:4px;margin:22px auto 0;background:var(--product-brand)}
.product-bisen-breadcrumb{background:var(--product-soft);border-bottom:1px solid #eceff3}
.product-bisen-breadcrumb__inner{width:min(1270px,calc(100% - 48px));margin:0 auto;padding:18px 0;color:#737983;font-size:14px;line-height:1.8}
.product-bisen-summary{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:50px;width:min(1270px,calc(100% - 48px));margin:42px auto 22px;padding:0 50px 20px;box-sizing:border-box}
.product-bisen-gallery{position:relative;z-index:2;min-width:0}
.product-bisen-gallery__main{position:relative;display:flex;width:100%;aspect-ratio:1/1;align-items:center;justify-content:center;overflow:hidden;border:1px solid rgba(120,128,140,.42);background:#fff}
.product-bisen-gallery__main>img{display:block;width:88%;height:88%;object-fit:contain;transition:opacity .18s ease}
.product-bisen-gallery__main.is-changing>img{opacity:.15}
.product-bisen-gallery__main:focus-visible{outline:1px solid rgba(120,128,140,.3);outline-offset:3px}
.product-bisen-gallery__hover-zoom{position:absolute;z-index:3;inset:0;visibility:hidden;overflow:hidden;opacity:0;line-height:0;pointer-events:none;transition:opacity .18s}
.product-bisen-gallery__hover-zoom>img{position:absolute;display:block!important;width:auto;height:auto;max-width:none!important;max-height:none!important;object-fit:fill!important;transition:none!important}
.product-bisen-gallery.is-hover-zoom .product-bisen-gallery__hover-zoom{visibility:visible;opacity:1}
.product-bisen-info{position:relative;z-index:1}
.product-bisen-gallery__thumbs{display:flex;gap:10px;margin-top:10px;overflow-x:auto;padding-bottom:2px;scrollbar-width:thin}
.product-bisen-gallery__thumb{display:flex;flex:0 0 62px;width:62px;height:62px;align-items:center;justify-content:center;padding:4px;border:1px solid rgba(120,128,140,.34);background:#fff;cursor:pointer;transition:border-color .2s,box-shadow .2s}
.product-bisen-gallery__thumb img{display:block;width:100%;height:100%;object-fit:contain;pointer-events:none}
.product-bisen-gallery__thumb:hover,.product-bisen-gallery__thumb.is-active{border-color:var(--product-brand);box-shadow:0 0 0 1px var(--product-brand)}
.product-bisen-info{min-width:0;padding-top:2px}
.product-bisen-info__title{margin:0;padding:0 0 18px;border-bottom:2px solid #343b45;color:#30353d;font-size:28px;font-weight:700;line-height:1.45;letter-spacing:0}
.product-bisen-info__model{margin:12px 0 0;color:#66707d;font-size:15px;line-height:1.7}
.product-bisen-info__description{margin:24px 0 0;color:#555d68;font-size:15px;line-height:1.9}
.product-bisen-meta{margin-top:24px;border-top:1px dashed #d8dce2}
.product-bisen-meta__row{display:flex;min-height:66px;align-items:center;border-bottom:1px dashed #d8dce2;font-size:15px}
.product-bisen-meta__label{flex:0 0 70px;color:#8a9099}
.product-bisen-meta__value{color:#323842;font-weight:500}
.product-bisen-meta__phone{font-size:25px;font-weight:700;color:var(--product-brand)}
.product-bisen-actions{display:flex;flex-wrap:wrap;gap:18px;margin-top:30px}
.product-bisen-button{display:inline-flex;min-width:160px;height:46px;align-items:center;justify-content:center;gap:9px;padding:0 24px;border:1px solid var(--product-brand);border-radius:3px;background:var(--product-brand);color:#fff;font-size:16px;font-weight:700;line-height:1;text-align:center;transition:background-color .2s,color .2s,transform .2s}
.product-bisen-button:hover{background:var(--product-brand-dark);color:#fff;transform:translateY(-2px)}
.product-bisen-button--ghost{background:#fff;color:var(--product-brand)}
.product-bisen-button--ghost:hover{background:var(--product-brand);color:#fff}
.product-bisen-button img{width:18px;height:18px;object-fit:contain}
.product-bisen-lightbox{position:fixed;z-index:999999;inset:0;display:none;background:rgba(0,0,0,.9);cursor:pointer}
.product-bisen-lightbox.is-open{display:block}
.product-bisen-lightbox>img{position:absolute;inset:0;display:block;max-width:90%;max-height:90%;width:auto;height:auto;margin:auto;border:2px solid #fff;box-sizing:border-box;object-fit:contain;cursor:default}
.product-bisen-lightbox__prev,.product-bisen-lightbox__next{position:absolute;z-index:2;top:50%;width:50px;height:50px;margin-top:-25px;padding:14px;border:2px solid #fff;border-radius:25px;background:#000;box-sizing:border-box;cursor:pointer;transition:background-color .2s,opacity .2s}
.product-bisen-lightbox__prev{left:10px}
.product-bisen-lightbox__next{right:10px}
.product-bisen-lightbox__prev:before,.product-bisen-lightbox__next:before{content:"";position:absolute;top:16px;width:0;height:0;border:7px solid transparent}
.product-bisen-lightbox__prev:before{left:7px;border-right:15px solid #fff}
.product-bisen-lightbox__next:before{left:18px;border-left:15px solid #fff}
.product-bisen-lightbox__prev:hover:not(:disabled),.product-bisen-lightbox__next:hover:not(:disabled){background:#444}
.product-bisen-lightbox__prev:disabled,.product-bisen-lightbox__next:disabled{opacity:.1;cursor:default}
body.product-bisen-lightbox-open{overflow:hidden}
.product-bisen-tabs{width:94%;min-width:0;max-width:1400px;margin:0 auto 54px}
.product-bisen-tabs__nav{display:flex;align-items:flex-end;border-bottom:1px solid #cfd3d9}
.product-bisen-tab{height:42px;padding:0 20px;border:0;background:#fff;color:#292f37;font-size:16px;font-weight:700;cursor:pointer}
.product-bisen-tab.is-active{background:var(--product-brand);color:#fff}
.product-bisen-tab--static{display:flex;align-items:center;margin:0;cursor:default}
.product-bisen-panel{display:none;padding:42px 0 10px;color:#4b535e;font-size:16px;line-height:2}
.product-bisen-panel.is-active{display:block}
.product-bisen-rich{min-height:120px}
.product-bisen-rich img,.product-bisen-rich video,.product-bisen-rich table{max-width:100%!important;height:auto!important}
.product-bisen-rich p{margin:0 0 14px}
.product-bisen-rich ul,.product-bisen-rich ol{padding-left:24px}
.product-bisen-mobile-content{display:none}
.product-bisen-parameters{overflow:hidden;border:1px solid #dfe3e8;border-bottom:0}
.product-bisen-parameter{display:grid;grid-template-columns:180px minmax(0,1fr);min-height:52px;border-bottom:1px solid #dfe3e8}
.product-bisen-parameter dt,.product-bisen-parameter dd{display:flex;align-items:center;margin:0;padding:12px 18px}
.product-bisen-parameter dt{background:#f5f7fa;color:#555e6b;font-weight:600}
.product-bisen-parameter dd{color:#2e343d}
.product-bisen-parameter.is-empty{display:none}
.product-feature-overview{margin:30px 0 10px!important;padding:34px 0!important;border-top:1px solid #e2e5ea;border-radius:0!important}
.product-feature-overview h2{font-size:26px!important}
.product-feature-list{display:flex;flex-wrap:wrap;justify-content:center;gap:30px 70px;margin:24px 0 8px}
.product-feature-item{width:120px;text-align:center;color:#252a31;font-size:16px;line-height:1.5}
.product-feature-icon{display:block;width:42px;height:42px;object-fit:contain;margin:0 auto 16px;padding:22px;border-radius:50%;background:#f5f7fa}
.product-specifications{background:transparent;border:0}
.product-specifications__body{box-sizing:border-box;padding:0;background:transparent;color:#444;font-size:16px;line-height:2.5;white-space:normal;word-break:break-word}
.product-consult{padding:72px 0 86px;background:#fff}
.product-consult__inner{width:min(1350px,calc(100% - 48px));margin:0 auto}
.product-consult__heading{text-align:center}
.product-consult__heading h2{margin:0;color:#292f37;font-size:34px;font-weight:700;line-height:1.4;letter-spacing:0}
.product-consult__heading p{margin:14px 0 0;color:#5f6771;font-size:16px;line-height:1.8}
.product-consult__form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 52px;margin-top:38px}
.product-consult__field{min-width:0}
.product-consult__field--full{grid-column:1/-1}
.product-consult__field input,.product-consult__field textarea{display:block;width:100%;box-sizing:border-box;border:1px solid #d2d6dc;border-radius:3px;background:#fff;color:#303640;font-family:inherit;font-size:15px;outline:0;transition:border-color .2s,box-shadow .2s}
.product-consult__field input{height:50px;padding:0 14px}
.product-consult__field textarea{min-height:185px;padding:14px;line-height:1.7;resize:vertical}
.product-consult__field input:focus,.product-consult__field textarea:focus{border-color:var(--product-brand);box-shadow:0 0 0 3px rgba(34,86,229,.1)}
.product-consult__captcha{display:flex;align-items:center;gap:12px}
.product-consult__captcha input{max-width:220px}
.product-consult__captcha img{display:block;height:38px;width:auto;cursor:pointer}
.product-consult__submit{grid-column:1/-1;height:50px;border:0;border-radius:3px;background:var(--product-brand);color:#fff;font-family:inherit;font-size:17px;font-weight:700;cursor:pointer;transition:background-color .2s,transform .2s}
.product-consult__submit:hover{background:var(--product-brand-dark);transform:translateY(-1px)}
.product-consult__notice{grid-column:1/-1;margin:-8px 0 0;color:#8b919a;font-size:13px;text-align:center}
.product-detail-section,.product-detail-cases,.product-related-products,.product-scene-section{font-family:inherit}
.product-detail-cases:not(:has(.product-case-item)),.product-related-products:not(:has(.product-related-item)){display:none}
.product-detail-cases .swiper-slide,.product-scene-section .swiper-slide{height:auto}
.product-detail-cases .product-case-item{display:block;height:100%}
.product-related-item .div1width1height{height:auto!important;aspect-ratio:16/10}
.product-related-item .div1width1height>.pos1{position:absolute!important;inset:0!important;display:flex;align-items:center;justify-content:center;transform:none!important}
.product-related-item .div1width1height img{display:block;width:100%!important;height:100%!important;margin-left:0!important;object-fit:contain;transform:none!important}
.product-scene-section .swiper-pagination{position:static;margin-top:20px}
.product-scene-section #productScenePrev,.product-scene-section #productSceneNext{display:block;width:4.5em;height:4.5em;margin-top:-2.25em;border:0;background-color:transparent;background-image:url("../picture/scene-arrow-normal.png");background-repeat:no-repeat;background-position:center;background-size:cover;box-shadow:none;opacity:1;transition:transform .3s}
.product-scene-section #productScenePrev{transform:none}
.product-scene-section #productSceneNext{transform:rotate(180deg)}
.product-scene-section #productScenePrev:hover,.product-scene-section #productSceneNext:hover{background-color:transparent;background-image:url("../picture/scene-arrow-hover.png")}
.product-scene-section #productScenePrev:hover{transform:rotate(180deg)}
.product-scene-section #productSceneNext:hover{transform:none}
.product-scene-section #productScenePrev.swiper-button-disabled,.product-scene-section #productSceneNext.swiper-button-disabled{opacity:.45}

.product-purchase-guide{position:relative;width:100%;padding:88px 0;overflow:hidden;background:#fff;color:#15253b;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}
.product-purchase-guide *{box-sizing:border-box;letter-spacing:0}
.product-purchase-guide__inner{width:84%;margin:0 auto}
.product-purchase-guide__heading{max-width:820px;margin:0 auto 42px;text-align:center}
.product-purchase-guide__heading>span{display:block;margin-bottom:12px;color:#e4552d;font-size:12px;font-weight:700;letter-spacing:2px!important}
.product-purchase-guide__heading h2{margin:0;color:#2256e5;font-size:36px;font-weight:700;line-height:1.35}
.product-purchase-guide__heading p{display:table;width:auto;max-width:100%;margin:14px auto 0;padding:10px 16px;border-top:1px solid #d9dee6;border-bottom:1px solid #d9dee6;color:#66758a;font-size:16px;line-height:1.8}
.product-purchase-guide__steps{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
.product-purchase-guide__step{position:relative;display:flex;min-height:340px;flex-direction:column;align-items:center;justify-content:center;padding:48px 20px 40px;border:0;border-radius:18px;background:#f1f5fd;text-align:center;transition:background-color .25s,transform .25s,box-shadow .25s}
.product-purchase-guide__step:hover,.product-purchase-guide__step:focus-visible{background:#eaf1fc;transform:translateY(-7px);box-shadow:0 15px 32px rgba(34,86,229,.12)}
.product-purchase-guide__step img{display:block;width:68px;height:68px;object-fit:contain}
.product-purchase-guide__step strong{color:#090d14;font-size:24px;font-weight:700;line-height:1.35}
.product-purchase-guide__step strong:before{display:block;width:50px;height:1px;margin:36px auto 32px;background:#9198a2;content:""}
.product-purchase-guide__step small{margin-top:18px;color:#555d6a;font-size:17px;line-height:1.5}

@media(hover:hover) and (pointer:fine){
    .product-bisen-gallery__main{cursor:zoom-in}
}

@media(max-width:1100px){
    .product-purchase-guide{padding:70px 0}
    .product-purchase-guide__steps{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media(max-width:750px){
    .product-bisen-banner{height:250px}
    .product-bisen-banner img{object-position:center 72%}
    .product-bisen-banner__title{align-items:flex-start;padding-top:34px}
    .product-bisen-banner__title h1{font-size:26px}
    .product-bisen-banner__title h1:after{width:48px;height:3px;margin-top:12px}
    .product-bisen-breadcrumb{display:none}
    .product-bisen-summary{grid-template-columns:1fr;gap:24px;width:calc(100% - 32px);margin:28px auto 20px;padding:0}
    .product-bisen-gallery__main>img{width:90%;height:90%}
    .product-bisen-gallery__hover-zoom{display:none!important}
    .product-bisen-gallery__thumb{flex-basis:56px;width:56px;height:56px}
    .product-bisen-info__title{font-size:22px;padding-bottom:13px}
    .product-bisen-info__model{font-size:14px}
    .product-bisen-info__description{margin-top:15px;font-size:14px;line-height:1.8}
    .product-bisen-meta{margin-top:16px}
    .product-bisen-meta__row{min-height:54px;font-size:14px}
    .product-bisen-meta__phone{font-size:21px}
    .product-bisen-actions{gap:10px;margin-top:20px}
    .product-bisen-button{flex:1;min-width:0;height:43px;padding:0 12px;font-size:14px}
    .product-bisen-tabs{width:calc(100% - 32px);min-width:0;margin-bottom:34px}
    .product-bisen-tabs__nav{overflow-x:auto}
    .product-bisen-tab{flex:0 0 auto;height:40px;padding:0 18px;font-size:15px}
    .product-bisen-panel{padding:24px 0 0;font-size:14px;line-height:1.85}
    .product-bisen-desktop-content{display:none}
    .product-bisen-mobile-content{display:block}
    .product-bisen-parameter{grid-template-columns:108px minmax(0,1fr);min-height:48px}
    .product-bisen-parameter dt,.product-bisen-parameter dd{padding:10px 12px}
    .product-feature-overview{margin-top:20px!important;padding:24px 0!important}
    .product-feature-overview h2{font-size:20px!important}
    .product-feature-list{gap:22px 0;margin-top:18px;justify-content:space-between}
    .product-feature-item{width:50%;font-size:12px}
    .product-feature-icon{width:28px;height:28px;margin-bottom:10px;padding:18px}
    .product-specifications__body{padding:0;font-size:14px;line-height:1.9}
    .product-consult{padding:42px 0 54px}
    .product-consult__inner{width:calc(100% - 32px)}
    .product-consult__heading h2{font-size:25px}
    .product-consult__heading p{margin-top:8px;font-size:14px}
    .product-consult__form{grid-template-columns:1fr;gap:14px;margin-top:26px}
    .product-consult__field--full,.product-consult__submit,.product-consult__notice{grid-column:1}
    .product-consult__field input{height:46px}
    .product-consult__field textarea{min-height:140px}
    .product-consult__captcha input{max-width:none;flex:1}
    .product-purchase-guide{padding:48px 0}
    .product-purchase-guide__inner{width:90%}
    .product-purchase-guide__heading{margin-bottom:26px}
    .product-purchase-guide__heading>span{margin-bottom:8px;font-size:10px}
    .product-purchase-guide__heading h2{font-size:25px}
    .product-purchase-guide__heading p{margin-top:10px;padding:8px 10px;font-size:13px;line-height:1.7}
    .product-purchase-guide__steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
    .product-purchase-guide__step{min-height:210px;padding:28px 10px 24px;border-radius:12px}
    .product-purchase-guide__step strong{font-size:16px}
    .product-purchase-guide__step strong:before{width:34px;margin:20px auto 18px}
    .product-purchase-guide__step small{margin-top:10px;font-size:12px}
}