/* =====================================================
   山东腾华自动化设备有限公司 (sdthzb.com) 风格对齐
   主色 #004499  强调 #bc1b20  字体 Microsoft Yahei
   ===================================================== */
:root{
  --blue:#004499;
  --blue-d:#003377;
  --red:#bc1b20;
  --dark:#222;
  --gray:#666;
  --lgray:#f7f7f7;
  --bord:#e4e4e4;
  --tite:#ccc;             /* 英文小标 */
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Microsoft Yahei','PingFang SC',sans-serif;font-size:15px;line-height:1.6;color:var(--dark);background:#fff;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%}
ul,ol{list-style:none}
button,input{font-family:inherit;outline:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 15px}
.clearfix::after{content:"";display:block;clear:both}

/* ================= 头部 (对标 Top002070) ================= */
.top{background:#fff;border-bottom:1px solid var(--bord);position:sticky;top:0;z-index:999}
.header{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:78px;padding:0 15px}
.header-logo{display:flex;align-items:center;flex-shrink:0}
.header-logo .logo-mark{width:44px;height:44px;background:#fff;display:flex;align-items:center;justify-content:center;margin-right:12px;overflow:hidden}
.header-logo .logo-mark-img{width:100%;height:100%;object-fit:contain;display:block}
.header-logo .l-name{line-height:1.15;white-space:nowrap}
.header-logo .l-name b{font-size:20px;color:#1a1a1a;font-weight:700;display:block;white-space:nowrap}
.header-logo .l-name em{font-style:normal;font-size:12px;color:var(--gray);letter-spacing:1px;display:block;white-space:nowrap}
.header-menu{display:flex;align-items:center;height:78px;flex-shrink:1;flex-wrap:nowrap}
.header-menu>li{position:relative;height:78px;display:flex;align-items:center;margin-left:4px;flex-shrink:0}
.header-menu>li>a{display:block;padding:0 16px;height:78px;line-height:78px;font-size:16px;color:#222;font-weight:600;white-space:nowrap}
.header-menu>li>a:hover,.header-menu>li.active>a{color:var(--blue)}
.header-menu>li.active>a{position:relative}
.header-menu>li.active>a::after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:3px;background:var(--blue)}
.header-menu .has-arrow::after{content:"▾";font-size:10px;margin-left:3px;color:var(--gray);display:inline-block}
.header-menu .sub{position:absolute;top:78px;left:0;min-width:200px;background:#fff;border:1px solid var(--bord);border-top:3px solid var(--blue);box-shadow:0 8px 24px rgba(0,0,0,.12);opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;display:none}
.header-menu>li:hover .sub{opacity:1;visibility:visible;transform:translateY(0);display:block}
.header-menu .sub li{line-height:44px;list-style:none}
.header-menu .sub li a{display:block;padding:0 18px;font-size:14px;color:#333;white-space:nowrap;border-bottom:1px solid #f5f5f5}
.header-menu .sub li a:hover{color:var(--red);background:#fafafa;padding-left:22px}
.header-menu .sub li:last-child a{border-bottom:none}
.header-right{display:flex;align-items:center}
.header-search{position:relative;margin-right:16px}
.header-search input{width:180px;height:34px;border:1px solid var(--bord);border-radius:3px;padding:0 32px 0 10px;font-size:13px;transition:.2s}
.header-search input:focus{border-color:var(--blue)}
.header-search .s-ico{position:absolute;right:9px;top:50%;transform:translateY(-50%);color:var(--gray);font-size:13px;cursor:pointer;border:none;background:none}
.lang-switch{font-size:13px;color:var(--blue);border-left:1px solid var(--bord);padding-left:14px;display:flex;align-items:center;gap:2px}
.lang-switch a{color:var(--gray);font-weight:500;padding:0 5px}
.lang-switch a:hover{color:var(--red)}
.lang-switch a.on{color:var(--blue);font-weight:700}
.lang-split{color:#ccc;padding:0 1px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:32px;height:32px;background:none;border:1px solid var(--bord);border-radius:3px}
.nav-toggle span{display:block;height:2px;width:18px;margin:0 auto;background:#333}

/* 移动端抽屉导航 */
.m-nav{display:none;background:#fff;border-top:1px solid var(--bord)}
.m-nav ul li{border-bottom:1px solid #f2f2f2}
.m-nav ul li a{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;font-size:15px;color:#222}
.m-nav ul li a:hover{color:var(--blue)}
.m-nav ul li.open>a{color:var(--blue)}
.m-nav .m-sub{display:none;background:#fafafa;padding-left:16px}
.m-nav li.open>.m-sub,.m-nav li.open>.m-sub{display:block}
.m-nav .m-sub a{padding:11px 16px;font-size:14px;color:#555}
.m-nav .arrow{color:var(--gray);transition:.2s}
.m-nav li.open>.arrow,.m-nav li.open>a>.arrow{transform:rotate(90deg)}

/* ================= 首页 Banner (对标 index-banner) ================= */
.banner{position:relative;height:640px;overflow:hidden;color:#fff;text-align:center;
  background:#fff}
.banner-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .8s ease,visibility .8s;z-index:1;overflow:hidden}
.banner-slide.active{opacity:1;visibility:visible;z-index:2}
/* Ken Burns: 独立背景层缓慢缩放，不影响文字 */
.banner-bg{position:absolute;inset:0;background-size:contain;background-repeat:no-repeat;background-position:center;background-color:#fff;z-index:0;will-change:transform}
.banner-slide::before{content:"";position:absolute;inset:0;background:rgba(0,20,50,.08);z-index:1}
.banner-in{position:relative;z-index:2;padding:80px 20px}
/* 文字逐层上浮进场 */
.banner-slide .s1,.banner-slide .s2,.banner-slide .s3,.banner-slide .banner-btns{opacity:0;transform:translateY(26px)}
.banner-slide.active .s1{animation:rise .6s cubic-bezier(.2,.7,.3,1) forwards}
.banner-slide.active .s2{animation:rise .7s .12s cubic-bezier(.2,.7,.3,1) forwards}
.banner-slide.active .s3{animation:rise .7s .26s cubic-bezier(.2,.7,.3,1) forwards}
.banner-slide.active .banner-btns{animation:rise .7s .4s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.12)}}
@keyframes rise{to{opacity:1;transform:translateY(0)}}
.banner .s1{font-size:15px;letter-spacing:8px;color:rgba(255,255,255,.8);margin-bottom:18px}
.banner .s2{font-size:46px;font-weight:700;line-height:1.3;margin-bottom:20px}
.banner .s3{font-size:18px;color:rgba(255,255,255,.9);max-width:700px;margin:0 auto}
.banner-btns{margin-top:36px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
/* banner arrows & dots */
.bn-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:44px;height:70px;
  border:0;background:rgba(0,0,0,.15);color:#fff;font-size:34px;line-height:1;cursor:pointer;transition:.25s;
  display:flex;align-items:center;justify-content:center}
.bn-arrow:hover{background:rgba(0,43,94,.7)}
.bn-arrow.prev{left:0;border-radius:0 4px 4px 0}
.bn-arrow.next{right:0;border-radius:4px 0 0 4px}
.bn-dots{position:absolute;bottom:22px;left:0;right:0;z-index:5;display:flex;gap:10px;justify-content:center}
.bn-dots span{width:26px;height:4px;border-radius:2px;background:rgba(255,255,255,.4);cursor:pointer;transition:.25s}
.bn-dots span.active{background:#fff}
.btn{display:inline-block;padding:12px 34px;font-size:15px;border-radius:3px;transition:.25s}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-d)}
.btn-line{border:1px solid rgba(255,255,255,.7);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.15)}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{opacity:.9}

/* ================= 区块标题 (对标 index-tit) ================= */
.index-section{padding:64px 0}
.m-bg{background:var(--lgray)}
.index-tit{text-align:center;margin-bottom:48px}
.index-tit .tit-e{font-size:46px;font-weight:700;color:var(--tite);line-height:70px;letter-spacing:2px}
.index-tit .tit-e::before,.index-tit .tit-e::after{content:"—";margin:0 14px}
.index-tit h3{font-size:34px;font-weight:700;color:#111}
.index-more{display:inline-block;text-align:center}
.index-more a{display:inline-block;padding:10px 34px;border:1px solid var(--blue);color:var(--blue);font-size:14px;letter-spacing:2px;transition:.25s}
.index-more a:hover{background:var(--blue);color:#fff}

/* aspect-ratio 兜底：若浏览器未生效，卡片图片区域也有明确高度，不会塌陷重叠 */
.prod-a-img,.prod-img,.cat-card-img,.detail-img,.prod-a-item .prod-a-img{min-height:180px}
@media(max-width:640px){.prod-a-img,.prod-img,.cat-card-img,.detail-img{min-height:150px}}

/* ================= 业务领域（高级卡片版） ================= */
.c-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.c-item{background:#fff;border:1px solid var(--bord);border-radius:8px;overflow:hidden;transition:.32s cubic-bezier(.2,.7,.3,1);position:relative;display:flex;flex-direction:column}
.c-item::before{content:"";position:absolute;left:0;top:0;width:0;height:3px;background:linear-gradient(90deg,var(--red),#e8503a);z-index:3;transition:width .35s}
.c-item:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(0,68,153,.16);border-color:rgba(0,68,153,.35)}
.c-item:hover::before{width:100%}
.c-item:hover .c-media img{transform:scale(1.08)}
.c-media{position:relative;overflow:hidden;background:#fff;height:225px}
.c-media .img-cat{width:100%;height:100%;object-fit:contain;transition:transform .6s ease;display:block}
.c-media .imgph{transition:transform .6s ease}
.c-item:hover .c-media .imgph{transform:scale(1.04)}
.c-num{position:absolute;left:14px;top:10px;font-size:52px;font-weight:800;line-height:1;color:#fff;opacity:.9;text-shadow:0 2px 10px rgba(0,0,0,.35);z-index:2;font-family:'Arial Black',Arial,sans-serif}
.c-tag{position:absolute;right:12px;top:12px;z-index:2;background:rgba(0,68,153,.88);color:#fff;font-size:12px;letter-spacing:.5px;padding:5px 12px;border-radius:20px;backdrop-filter:blur(2px)}
.c-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1}
.c-body h3{font-size:18px;color:#111;font-weight:700;margin-bottom:10px;line-height:1.4;display:flex;align-items:baseline;gap:7px}
.c-body h3 .c-idx{font-style:normal;color:var(--red);font-weight:800;font-size:17px}
.c-desc{font-size:13px;color:#7b8794;line-height:1.7;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.c-go{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:600;letter-spacing:1px;border-top:1px dashed var(--bord);padding-top:14px}
.c-arrow{display:inline-flex;transform:translateX(0);transition:transform .28s;font-weight:700}
.c-item:hover .c-go{color:var(--red)}
.c-item:hover .c-arrow{transform:translateX(5px);color:var(--red)}
@media(max-width:1100px){.c-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.c-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.c-grid{grid-template-columns:1fr}.c-media{height:200px}}

/* ================= 关于我们 (对标 index-about) ================= */
.index-about{position:relative;color:#fff;padding:70px 0;
  background:linear-gradient(135deg,#03234a 0%,#004499 100%)}
.index-about .container{position:relative;z-index:2;max-width:1100px}
.about-head{text-align:center;margin-bottom:34px}
.about-head .tit-e{font-size:44px;font-weight:700;color:rgba(255,255,255,.35);line-height:66px;letter-spacing:2px}
.about-head .tit-e::before,.about-head .tit-e::after{content:"—";margin:0 12px}
.about-head h3{font-size:32px;font-weight:700}
.about-profile{max-width:860px;margin:0 auto 30px;font-size:15px;line-height:1.9;color:rgba(255,255,255,.92)}
.about-more{text-align:center;margin-bottom:38px}
.about-more a{display:inline-block;padding:11px 36px;border:1px solid rgba(255,255,255,.75);color:#fff;letter-spacing:2px}
.about-more a:hover{background:#fff;color:var(--blue)}
.about-lists{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.about-li{display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);padding:18px 20px;border-radius:4px}
.about-li .a-ico{flex:none;width:42px;height:42px;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700}
.about-li span{display:block;font-size:16px;font-weight:600;margin-bottom:3px}
.about-li p{font-size:13px;color:rgba(255,255,255,.8);line-height:1.5}
@media(max-width:640px){.about-lists{grid-template-columns:1fr}}

/* ================= 核心产品 (对标 index-service) ================= */
.prod-swiper-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-a-item{background:#fff;border:1px solid var(--bord);overflow:hidden;transition:.3s}
.prod-a-item:hover{box-shadow:0 6px 22px rgba(0,68,153,.12);border-color:var(--blue);transform:translateY(-4px)}
.prod-a-img{height:220px;background:#f0f3f7;position:relative;overflow:hidden}
.prod-a-txt{padding:16px 16px 14px}
.prod-a-txt h3{font-size:16px;color:#222;font-weight:600}
.prod-a-txt p{font-size:13px;color:var(--gray);margin-top:6px;height:44px;overflow:hidden}
@media(max-width:1024px){.prod-swiper-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.prod-swiper-row{grid-template-columns:1fr}}

/* ================= 新闻 (对标 index-news) ================= */
.news-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-item{background:#fff;border:1px solid var(--bord);padding:22px;transition:.3s;display:flex;flex-direction:column}
.news-item:hover{box-shadow:0 6px 22px rgba(0,68,153,.10);transform:translateY(-4px)}
.news-item h3{font-size:17px;font-weight:600;line-height:1.5;color:#222;margin-bottom:10px}
.news-item h3 a:hover{color:var(--red)}
.news-item .n-date{font-size:12px;color:var(--gray);border-left:3px solid var(--red);padding-left:8px;margin-bottom:10px}
.news-item .n-sum{font-size:13px;color:var(--gray);flex:1}
@media(max-width:900px){.news-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.news-row{grid-template-columns:1fr}}

/* ================= 联系 CTA ================= */
.cta-band{background:var(--blue);color:#fff;padding:46px 0}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.cta-in h2{font-size:24px;margin-bottom:6px}
.cta-in p{color:rgba(255,255,255,.8)}
.cta-tel{font-size:26px;font-weight:700;color:#fff}
.cta-tels{display:flex;flex-direction:column;align-items:flex-end;gap:8px}

/* ================= 内页通用 (page-hero 面包屑) ================= */
.page-hero{background:linear-gradient(135deg,#03234a,#004499);color:#fff;padding:44px 0;text-align:left}
.page-hero-sm{padding:30px 0}
.page-hero .container{display:flex;flex-direction:column}
.page-title{font-size:30px;font-weight:700;position:relative;padding-bottom:14px}
.page-title::after{content:"";position:absolute;left:0;bottom:0;width:46px;height:3px;background:var(--red)}
.page-crumb{margin-top:12px;font-size:13px;color:rgba(255,255,255,.75)}
.page-crumb a{color:#fff}
.page-crumb a:hover{color:#ffd0d0}
.section{padding:56px 0}
.m-bg-alt{background:var(--lgray)}
.article{max-width:880px}
.article h2.h3{font-size:22px;color:#111;margin:26px 0 14px;padding-left:12px;border-left:4px solid var(--blue)}
.article p{font-size:15px;line-height:1.9;color:#444;margin-bottom:14px}

/* ================= 图片占位 (对标) ================= */
.imgph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:repeating-linear-gradient(45deg,#eef2f7,#eef2f7 12px,#e3e9f0 12px,#e3e9f0 24px);color:#9aa7b5;font-size:13px;text-align:center;padding:14px}
.imgph span{font-family:'Microsoft Yahei';}
.c-bg.imgph{min-height:230px;font-size:16px}

/* ================= 分类页 / 产品页 ================= */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--bord);transition:.3s;display:flex;flex-direction:column;overflow:hidden}
.cat-card:hover{box-shadow:0 8px 26px rgba(0,68,153,.12);border-color:var(--blue);transform:translateY(-4px)}
.cat-card-img{background:#fff;position:relative;overflow:hidden;height:180px}
.cat-card-img .img-cat{width:100%;height:100%;object-fit:contain;display:block;transition:transform .6s ease;background:#fff}
.cat-card:hover .cat-card-img .img-cat{transform:scale(1.04)}
.cat-b{display:flex;align-items:center;gap:8px}
.cat-sn{color:var(--red);font-weight:700}
.cat-card h3{padding:16px 18px 4px;font-size:18px;color:#111}
.cat-card h3 em{display:block;font-style:normal;font-size:12px;color:var(--gray);margin-top:2px}
.cat-card .cat-desc{font-size:13px;color:var(--gray);padding:8px 18px;flex:1}
.cat-card .cat-more2{padding:0 18px 16px;color:var(--blue);font-size:13px}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod-card{background:#fff;border:1px solid var(--bord);transition:.3s;overflow:hidden;display:flex;flex-direction:column}
.prod-card:hover{box-shadow:0 8px 26px rgba(0,68,153,.12);border-color:var(--blue);transform:translateY(-4px)}
.prod-img{height:230px;background:#fff;position:relative;overflow:hidden}
.prod-img .img-prod,.cat-banner .img-cat-banner{width:100%;height:100%;object-fit:contain;display:block;background:#fff}
.prod-card h3{padding:14px 16px 0;font-size:16px;color:#111}
.prod-card .prod-desc{font-size:13px;color:var(--gray);padding:6px 16px;flex:1}
.prod-card .prod-more{padding:0 16px 14px;color:var(--blue);font-size:13px}
.detail-head{display:grid;grid-template-columns:2.2fr 1fr;gap:30px;align-items:start}
.detail-img{height:320px;background:#fff;position:relative;border:1px solid var(--bord)}
.detail-gallery{display:flex;flex-direction:column;gap:12px;flex:1;min-width:0}
.detail-gallery .detail-img{width:100%}
.img-detail{width:100%;height:100%;object-fit:contain;display:block;overflow:hidden}
.detail-info h2{font-size:24px;color:#111;border-left:4px solid var(--blue);padding-left:12px;margin-bottom:10px}
.detail-info h2 small{font-size:12px;color:var(--gray);font-weight:400}
.badge{display:inline-block;background:var(--lgray);color:var(--blue);font-size:12px;padding:3px 12px;margin-bottom:10px}
.detail-info p{color:#444;line-height:1.9}
.detail-info .btn{margin-top:16px}
.check-list{margin:10px 0}
.check-list li{padding:7px 0 7px 24px;position:relative;color:#444}
.check-list li::before{content:"✓";color:var(--red);position:absolute;left:0;font-weight:700}
@media(max-width:900px){.cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}.detail-head{grid-template-columns:1fr}}
@media(max-width:640px){.cat-grid,.prod-grid{grid-template-columns:1fr}}

/* ================= FAQ ================= */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--bord);margin-bottom:12px;overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 18px;font-weight:600;background:#fff;display:flex;align-items:center}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--red);font-size:20px;margin-left:auto;transition:.2s}
.faq-item[open] summary::after{content:"−"}
.faq-item:hover summary{color:var(--blue)}
.faq-q{color:var(--red);margin-right:10px}
.faq-item[open] summary{background:var(--lgray)}
.faq-a{padding:0 18px 16px;color:var(--gray);border-top:1px dashed var(--bord)}
.faq-a p{padding-top:12px}
.faq-cta{background:var(--lgray);padding:26px;text-align:center;margin-top:20px}
.faq-cta p{margin-bottom:14px;color:#444}

/* ================= 联系 ================= */
.contact-wrap{max-width:760px;margin:0 auto}
.info-table{width:100%;border-collapse:collapse;margin-bottom:18px}
.info-table th,.info-table td{padding:14px 12px;border-bottom:1px solid var(--bord);text-align:left;vertical-align:top}
.info-table th{color:#111;width:110px;white-space:nowrap;background:var(--lgray)}
.info-table th span{color:var(--red);margin-right:6px}
.info-table td a{color:var(--blue)}
.contact-note{color:var(--gray)}

/* ================= 产品规格参数 ================= */
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:22px 0}
.specs.single-col{grid-template-columns:1fr}
.spec-group{border:1px solid var(--bord);border-radius:8px;overflow:hidden;background:#fff}
.spec-title{margin:0;padding:12px 16px;font-size:15px;font-weight:700;color:#fff;background:var(--blue)}
.spec-group-body{display:flex;gap:16px;align-items:flex-start}
.spec-group-img{width:220px;flex-shrink:0;background:#fff;border-right:1px solid var(--bord);display:flex;align-items:center;justify-content:center;padding:12px}
.spec-group-img img{width:100%;max-width:200px;height:auto;object-fit:contain}
.spec-group.has-img .spec-table th{width:40%}
@media (max-width:720px){.spec-group-body{flex-direction:column}.spec-group-img{width:100%;border-right:none;border-bottom:1px solid var(--bord);padding:14px}.spec-group-img img{max-width:220px}}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{padding:10px 16px;font-size:14px;text-align:left;vertical-align:top;border-bottom:1px solid #f1f3f5}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-table th{width:34%;color:#555;background:#f8fafc;white-space:nowrap}
.spec-table td{color:#222}
.hl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:22px 0}
.hl-item{background:#fff;border:1px solid var(--bord);border-left:4px solid var(--red);padding:18px 18px 16px;border-radius:4px}
.hl-tit{margin:0 0 8px;font-size:16px;font-weight:700;color:#111}
.hl-item p{font-size:14px;color:#555;line-height:1.7;margin:0}
.dot-table{margin:10px 0 22px;border:1px solid var(--bord)}
.table-scroll{overflow-x:auto;margin:10px 0 22px}
.compare-table{min-width:760px;border:1px solid var(--bord);border-collapse:collapse;width:100%}
.compare-table th{background:#f7f9fb;white-space:nowrap}
.compare-table th:first-child{text-align:left}
.compare-table td,.compare-table th{border:1px solid var(--bord);padding:10px 12px;font-size:13px;vertical-align:middle}
.compare-table td{color:#222}
.scheme{background:#fff;border:1px solid var(--bord);border-left:4px solid var(--red);border-radius:4px;padding:16px 18px;margin-bottom:14px}
.scheme-title{margin:0 0 10px;font-size:16px;font-weight:700;color:#111}
.scheme-pain,.scheme-sol{font-size:14px;color:#555;line-height:1.7;margin:6px 0}
.scheme-pain b{color:#c00}
.scheme-sol b{color:#1a7f3b}
.showcase-list{margin:8px 0 22px;padding-left:20px}
.showcase-list li{font-size:14px;color:#555;line-height:1.9}
.showcase-list li b{color:#333}
.app-chips{margin:8px 0 22px;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:10px}
.app-chips li{background:#fff;border:1px solid var(--bord);border-left:4px solid var(--red);border-radius:4px;padding:8px 14px;font-size:14px;color:#333}
@media(max-width:640px){.hl-grid{grid-template-columns:1fr}}
@media(max-width:640px){.specs{grid-template-columns:1fr}}

/* ================= 页脚 (对标) ================= */
.footer{background:#12171f;color:#9aa6b2;padding:52px 0 0}
.footer-cols{display:grid;grid-template-columns:1.5fr 1.2fr 1.2fr 1.4fr;gap:32px;padding-bottom:34px}
.footer h4{color:#fff;font-size:17px;margin-bottom:18px;position:relative;padding-left:12px}
.footer h4::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--red)}
.footer li{margin-bottom:10px;font-size:14px}
.footer li a:hover{color:#fff}
.footer-about{font-size:14px;line-height:1.9;color:#8a96a2}
.footer-about span{color:#fff}
.footer-contact li{display:flex;gap:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#6f7a86}
.footer-bottom a{color:#9aa6b2}
.footer-bottom a:hover{color:#fff}
@media(max-width:900px){.footer-cols{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.footer-cols{grid-template-columns:1fr}}

/* ================= 404 ================= */
.notfound{text-align:center;padding:80px 0}
.nf-code{font-size:90px;font-weight:700;color:var(--blue);line-height:1}
.nf-text{color:var(--gray);margin:16px 0 24px}

/* ================= 内页模板兼容类 ================= */
.h3{font-size:22px;color:#111;margin:26px 0 14px;padding-left:12px;border-left:4px solid var(--blue)}
.sec-head{text-align:center;margin-bottom:36px}
.sec-title{font-size:32px;font-weight:700;color:#111}
.sec-sub{color:var(--gray);margin:10px auto 0;max-width:720px}
.cat-grid-wide .cat-name,.cat-card .cat-name{font-size:18px;color:#111;padding:16px 18px 4px}
.cat-name-en{display:block;font-size:12px;color:var(--gray);margin-top:2px}
.cat-card .cat-desc{font-size:13px;color:var(--gray);padding:8px 18px;flex:1}
.cat-more,.cat-more2{color:var(--blue);font-size:13px;padding:0 18px 16px}
.prod-name{font-size:16px;color:#111;padding:14px 16px 0}
.prod-card .prod-desc{font-size:13px;color:var(--gray);padding:6px 16px;flex:1}
.prod-card .cat-more{padding-bottom:14px}
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:8px 0}
.value-item{background:#fff;border:1px solid var(--bord);padding:20px}
.value-item h4{font-size:17px;color:#111;margin-bottom:8px;padding-left:10px;border-left:3px solid var(--red)}
.value-item p{font-size:14px;color:var(--gray)}
@media(max-width:640px){.value-grid{grid-template-columns:1fr}}

/* ================= 响应式头部 ================= */
@media(max-width:1150px) and (min-width:1025px){
  .header-search{display:none}
}
@media(max-width:1024px){
  .header-menu{display:none}
  .header-search input{width:150px}
}
@media(max-width:768px){
  .top{position:relative}
  .header{height:60px}
  .header-logo .l-name b{font-size:17px}
  .header-search{display:none}
  .nav-toggle{display:flex}
  .header-menu{display:none}
  .m-nav.show{display:block}
  .banner{height:540px}
  .banner .s2{font-size:30px}
  .banner .s1{letter-spacing:4px}
  .bn-arrow{width:34px;height:52px;font-size:26px}
  .section{padding:44px 0}
  .index-section{padding:46px 0}
  .index-tit .tit-e{font-size:32px;line-height:48px}
  .index-tit h3{font-size:26px}
  .about-head .tit-e{font-size:32px}
  .about-head h3{font-size:26px}
  .page-title{font-size:24px}
}

/* 关于我们 服务行业 */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0 8px}
.industry-item{background:#f6f8fa;border:1px solid #e6e9ee;border-radius:8px;padding:14px 16px;text-align:center;font-weight:600;color:#2b3a52;transition:all .25s ease}
.industry-item:hover{background:#1e6fff;border-color:#1e6fff;color:#fff;transform:translateY(-2px)}
@media (max-width:1100px){.industry-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:820px){.industry-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.industry-grid{grid-template-columns:repeat(1,1fr);gap:10px}}

/* 联系我们 地图/二维码/全国服务点 */
.contact-media{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:18px 0 8px;align-items:center}
.contact-figure{margin:0;text-align:center}
.contact-figure img{border:1px solid #e6e9ee;border-radius:8px;background:#fff}
.contact-figure .contact-map{width:100%;height:auto;object-fit:contain}
.contact-figure .contact-qr{width:140px;height:140px;object-fit:contain}
.contact-figure figcaption{margin-top:8px;font-size:14px;color:#5a6b82}
.contact-qrs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.service-map{margin:14px 0 8px;text-align:center}
.service-map img{width:100%;height:auto;object-fit:contain;border:1px solid #e6e9ee;border-radius:8px;background:#fff}
@media (max-width:1100px){.contact-qrs{grid-template-columns:repeat(3,1fr)}}
@media (max-width:820px){.contact-media{grid-template-columns:1fr}.contact-qrs{grid-template-columns:repeat(3,1fr)}}
@media (max-width:480px){.contact-qrs{grid-template-columns:repeat(1,1fr);gap:8px}}
/* 分类详情页封面图 */
.cat-intro{display:flex;gap:24px;align-items:center;background:#fff;border:1px solid var(--bord);border-radius:10px;padding:18px;margin-bottom:22px}
.cat-intro-img{width:260px;height:170px;object-fit:contain;background:#fff;border-radius:8px;flex-shrink:0}
.cat-intro-body{flex:1;min-width:0}
.cat-intro-body .h3{margin-bottom:8px}
.cat-intro-body small{font-size:14px;color:var(--gray);font-weight:400}
.cat-intro-text{font-size:14px;color:var(--gray);line-height:1.7;margin:0}
@media (max-width:820px){.cat-intro{flex-direction:column;align-items:flex-start}.cat-intro-img{width:100%;height:auto}}
@media (max-width:480px){.cat-intro{padding:14px}}
/* 产品效果图小图 */
.detail-thumbs{display:flex;flex-wrap:nowrap;gap:8px;margin-top:10px;overflow-x:auto}
.detail-thumbs .thumb{width:auto;height:160px;flex:0 0 auto;object-fit:contain;background:#fff;border:1px solid var(--bord);border-radius:6px;padding:3px}
@media (max-width:720px){.detail-thumbs .thumb{height:120px}}