/* ===== .series-intro 产品系列介绍 ===== */
.series-intro{padding:0 0 50px;background:#fff}
.series-intro .intro-row{display:flex;align-items:center;gap:48px}
.series-intro .intro-copy{flex:1;min-width:0}
.series-intro .head .title-36{margin-bottom:16px;color:var(--c-accent-2)}
.series-intro .head .text{font-size:18px;line-height:1.65;color:#555}
.series-intro .head .text p{margin:0}
.series-intro .a-btn{margin-top:28px}
.series-intro .pic{flex:0 0 52%;width:52%;max-width:680px}
.series-intro .pic img{display:block;width:100%;height:auto;border-radius:12px;background:#f4f7fb}
.series-intro .a-lb{border-radius:15px;padding:0 35px}

/* ===== .series-product 产品列表 ===== */
.series-product{padding:65px 0 75px;background:#f9fbfe}
.series-product .head{margin-bottom:50px;text-align:center}
.series-product .head .title-36{margin-bottom:16px;color:var(--c-accent-2)}
.series-product .head .desc{max-width:800px;margin:0 auto;font-size:18px;line-height:1.65}
.series-product .head .desc p{margin:0}
.series-product .content{display:flex;flex-direction:column;gap:18px}
.series-product .item{display:flex;align-items:center;gap:36px;padding:22px 28px;background:#fff;border-radius:12px;box-shadow:0 8px 24px rgba(8,27,95,.06);transition:box-shadow .3s ease,transform .3s ease}
.series-product .item:hover{box-shadow:0 12px 32px rgba(8,27,95,.1);transform:translateY(-4px)}
.series-product .item .img{flex:0 0 46%;max-width:560px;display:flex;align-items:center;justify-content:center;overflow:hidden;text-decoration:none}
.series-product .item .img img{display:block;width:100%;height:auto;max-height:240px;object-fit:contain}
.series-product .item .box{flex:1;display:flex;flex-direction:column;justify-content:center;min-width:0}
.series-product .item .h5{margin-bottom:14px;font-size:24px;line-height:1.35;font-weight:600;color:var(--c-accent-2);text-decoration:none}
.series-product .item .specs{margin:0}
.series-product .item .specs ul{margin:0;padding:0;list-style:none}
.series-product .item .specs li,
.series-product .item .specs p{position:relative;margin:0 0 8px;padding-left:16px;font-size:16px;line-height:1.5;color:#333;list-style:none}
.series-product .item .specs li::marker{content:none}
.series-product .item .specs li:nth-child(3),
.series-product .item .specs p:nth-child(3),
.series-product .item .specs li:last-child,
.series-product .item .specs p:last-child{margin-bottom:0}
.series-product .item .specs li:nth-child(n+4),
.series-product .item .specs p:nth-child(n+4){display:none}
.series-product .item .specs li::before,
.series-product .item .specs p::before{content:"";position:absolute;left:0;top:0.55em;width:6px;height:6px;border-radius:1px;background:var(--c-accent-2)}
.series-product .down-list{margin-top:40px}

/* ===== .series-process 生产流程，版式写在富文本里 ===== */
.series-process{padding:80px 0 90px;background:#fff;border-top:1px solid #dae3ef;border-bottom:1px solid #dae3ef}

/* ===== .series-advantage 解决方案与优势 ===== */
.series-advantage{padding:80px 0 90px}
.series-advantage .title-36{margin-bottom:45px;color:var(--c-accent-2)}
.series-advantage .content{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.series-advantage .item{height:100%;padding:28px 22px 30px;background:#fff;border-radius:12px;box-shadow:3px 4px 5px 0 rgba(6,0,1,.11);border:solid 1px rgba(222,222,222,.59);transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease}
.series-advantage .item:hover{border-color:#d0d8e4;box-shadow:0 10px 28px rgba(8,27,95,.08);transform:translateY(-4px)}
.series-advantage .item .top{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.series-advantage .item .icon{flex:0 0 65px;width:65px}
.series-advantage .item .h5{font-size:20px;line-height:1.35;font-weight:600;color:var(--c-accent-2)}
.series-advantage .item p{margin:0;font-size:16px;line-height:1.55}

/* ===== .series-service 定制工程与交钥匙服务 ===== */
.series-service{padding:0 0 90px;background:#fff}
.series-service .content{display:flex;align-items:center;justify-content:space-between}
.series-service .left{width:50%;overflow:hidden;border-radius:12px}
.series-service .left img{display:block;width:100%;height:100%;object-fit:cover}
.series-service .right{width:48%}
.series-service .right h2{margin-bottom:28px;font-size:36px;line-height:1.3;font-weight:600;color:var(--c-accent-2)}
.series-service ul{margin:0 0 35px;padding:0;list-style:none}
.series-service ul li::before{content:url(../images/sign-1.webp);display:inline-block;position:absolute;left:0;top:0}
.series-service ul li{margin-bottom:22px;position:relative;padding-left:35px}
.series-service ul li:last-child{margin-bottom:0}
.series-service ul h5{margin-bottom:5px;font-size:20px;line-height:1.3;font-weight:500;color:var(--c-accent-2)}
.series-service ul p{margin:0;font-size:16px;line-height:1.4}
.series-service .a-btn .a-lb{border-radius:15px;padding:0 50px;gap:20px;font-weight:500}

/* ===== .series-faq 常见问题 ===== */
.series-faq{padding:0 0 100px;background:#fff}
.series-faq .title-36{margin-bottom:40px;color:var(--c-accent-2)}
.series-faq .content{border-top:1px solid #dde5ef}
.series-faq .items{border-bottom:1px solid #dde5ef}
.series-faq .item{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 0;cursor:pointer;user-select:none}
.series-faq .items.active .item{padding-bottom:12px}
.series-faq .quen-q{flex:1;min-width:0;display:flex;align-items:baseline;gap:8px;font-size:20px;line-height:1.45;font-weight:600;color:#000}
.series-faq .quen-q p{margin:0}
.series-faq .symbol{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:24px}
.series-faq .symbol i{font-style:normal;font-size:36px;line-height:1;font-weight:500;color:var(--c-accent-2)}
.series-faq .symbol .minus{display:none}
.series-faq .items.active .symbol .minus{display:inline-block}
.series-faq .items.active .symbol .plus{display:none}
.series-faq .quen-a{display:none;padding:0 36px 22px 0}
.series-faq .box-cont{font-size:16px;line-height:1.7;font-weight:300;color:#666}
.series-faq .box-cont p{margin:0}
.series-faq .box-cont p + p{margin-top:10px}

@media (max-width:899px){
    .series-intro .intro-row{flex-direction:column;align-items:stretch;gap:24px}
    .series-intro .pic{flex:none;width:100%;max-width:none}
    .series-advantage .content{grid-template-columns:1fr 1fr}
    .series-service .content{flex-direction:column;gap:25px}
    .series-service .left,
    .series-service .right{width:100%}
}
@media (max-width:768px){
    .series-intro .head .text,
    .series-product .head .desc{font-size:15px}
    .series-product .item{flex-direction:column}
    .series-product .item .img{flex:none;width:100%}
    .series-service .right h2{font-size:26px}
    .series-advantage .content{grid-template-columns:1fr}
    .series-faq .quen-q{font-size:16px}
    .series-faq .quen-a{padding-right:0}
}