@charset "utf-8";
/* ==========================================================================
   DRUTEK 官网全局优化层  style2.css
   说明：本文件在 style.css 之后加载，用于统一全站字体、字号阶梯、行高、
        间距节奏、栅格对齐、表单控件与响应式表现。
        所有规则均为覆盖式，删除本文件即可完全回退。
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --drt-blue:#1774c7;
  --drt-blue-dark:#0f5ea8;
  --drt-blue-soft:#eef5fc;
  --drt-text:#2b333b;
  --drt-text-2:#5a6672;
  --drt-text-3:#8b959f;
  --drt-line:#e5ebf1;
  --drt-soft:#f6f9fc;
  --drt-radius:6px;
  --drt-shadow:0 8px 28px rgba(23,116,199,.10);
  --drt-shadow-sm:0 2px 10px rgba(23,116,199,.07);
  --drt-font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",
             "Noto Sans CJK SC","Helvetica Neue",Helvetica,Arial,sans-serif;
  --drt-ease:cubic-bezier(.25,.46,.45,.94);
}

/* ---------- 2. 基础字体与排版 ---------- */
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
}
html,body{overflow-x:hidden;max-width:100%;}
html,body{overflow-x:hidden;max-width:100%;}
body{
  font-family:var(--drt-font);
  font-size:15px;
  line-height:1.75;
  color:var(--drt-text);
  letter-spacing:.2px;
  background:#fff;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
body,button,input,select,textarea{
  font-family:var(--drt-font);
}
::selection{background:rgba(23,116,199,.16);color:#0d3d68;}

/* 标题阶梯统一 */
h1,h2,h3,h4,h5,h6{font-family:var(--drt-font);color:#1f262d;font-weight:700;line-height:1.35;}
h1{font-size:32px;}
h2{font-size:26px;}
h3{font-size:20px;}
h4{font-size:18px;}
h5{font-size:16px;}
h6{font-size:15px;}

/* 段落：正文区统一段距，避免密不透风 */
.info-content{font-size:15px;line-height:1.95;color:#3d4854;letter-spacing:.2px;}
.info-content p{margin:0 0 16px;}
.info-content p:last-child{margin-bottom:0;}
.info-content ul,.info-content ol{margin:0 0 16px;padding-left:22px;}
.info-content ul li{list-style:disc;margin:6px 0;}
.info-content ol li{list-style:decimal;margin:6px 0;}
.info-content strong{color:#1f262d;font-weight:700;}
.info-content a{color:var(--drt-blue);}
.info-content a:hover{text-decoration:underline;}

/* 图片与表格防溢出 */
.info-content img,.info-content table{max-width:100%;}
.info-content img{height:auto;}
.info-content table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:14px;}
.info-content table th,
.info-content table td{border:1px solid var(--drt-line);padding:10px 14px;line-height:1.7;}
.info-content table th{background:var(--drt-soft);font-weight:700;color:#1f262d;}

/* ---------- 3. 容器与栅格 ---------- */
.container{
  max-width:1240px;
  width:100%;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
@media (max-width:1240px){.container{max-width:100%;}}
.row{margin-left:-12px;margin-right:-12px;}
.row > [class*="col-"]{padding-left:12px;padding-right:12px;}

/* ---------- 4. 顶部信息条 ---------- */
.header-top{
  line-height:44px;
  font-size:13px;
  letter-spacing:.5px;
  background:linear-gradient(90deg,#1774c7 0%,#1a82d4 100%);
}
.header-top .float-lg-left{padding-left:0;}
.header-top .float-lg-right{padding-right:0;display:flex;align-items:center;}
.header-top .float-lg-right > span{display:none;}   /* 去掉 ◇ 装饰 */
.header-top a{
  display:inline-block;
  padding:0 4px;
  opacity:.88;
  transition:opacity .2s var(--drt-ease);
}
.header-top a:hover{opacity:1;color:#fff;}
.header-top .float-lg-right a + a{position:relative;margin-left:6px;}

/* ---------- 5. 主导航 ---------- */
@media (min-width:1001px){
  .header{height:88px;line-height:88px;}
  .header .logo img{max-height:52px;}
  .nav > ul > li{height:88px;line-height:88px;margin-top:0;}
  .nav > ul > li > a{
    display:block;height:88px;line-height:88px;
    padding:0 26px;
    font-size:16px;font-weight:600;letter-spacing:.5px;
    color:#2b333b;
    transition:color .22s var(--drt-ease);
  }
  /* 悬停/当前：下划线指示器，替代单纯变色 */
  .nav > ul > li > a::after{
    content:"";position:absolute;left:26px;right:26px;bottom:22px;height:2px;
    background:var(--drt-blue);border-radius:2px;
    transform:scaleX(0);transform-origin:center;
    transition:transform .28s var(--drt-ease);
  }
  .nav > ul > li.current > a::after,
  .nav > ul > li:hover > a::after{transform:scaleX(1);}
  .nav > ul > li.current > a,
  .nav > ul > li:hover > a{color:var(--drt-blue);}

  /* 下拉子菜单 */
  .nav ul li ul{
    background:#fff;
    border-radius:0 0 8px 8px;
    box-shadow:0 14px 34px rgba(20,50,80,.14);
    padding:8px 0;
    top:88px;
    min-width:100%;
    overflow:hidden;
  }
  .nav ul li ul li a{
    color:#3d4854;font-size:14px;line-height:40px;font-weight:500;
    white-space:nowrap;padding:0 22px;
    transition:background .18s,color .18s;
  }
  .nav ul li ul li a:hover{background:var(--drt-blue-soft);color:var(--drt-blue);}
}

/* ---------- 6. 页面主标题（.home-headline） ---------- */
@media (min-width:1001px){
  .home-headline{margin:64px 0 44px;}
  .home-headline .tit{font-size:32px;letter-spacing:2px;line-height:1.3;}
  .home-headline i{margin:22px auto 0;width:44px;height:3px;border-radius:3px;}
  .home-headline .titmax{margin-top:18px;padding:0 18%;font-size:15px;line-height:1.9;color:var(--drt-text-2);}
  .home-headline .titmin{margin-top:14px;font-size:16px;color:var(--drt-text-3);letter-spacing:1px;}
}
.home-headline .tit{color:#1f262d;font-weight:700;}
.home-headline i{background:var(--drt-blue);}

/* ---------- 7. 二级栏目导航（等宽药丸，替代文字条） ---------- */
.sub-nav-box-bg{background:#fff;border-bottom:1px solid var(--drt-line);}
@media (min-width:1001px){
  .sub-nav-box{margin:0 auto;padding:16px 0;text-align:center;}
  .sub-nav-box .sub-nav > ul{
    display:flex;flex-wrap:wrap;justify-content:center;align-items:center;
    gap:8px;
  }
  .sub-nav-box .sub-nav > ul > li{
    display:block;line-height:1;text-align:center;position:relative;
  }
  .sub-nav-box .sub-nav > ul > li > a{
    display:block;
    padding:10px 14px;
    min-width:88px;
    line-height:1.5;
    font-size:14px;font-weight:500;color:#4d5864;
    background:var(--drt-soft);
    border:1px solid var(--drt-line);
    border-radius:var(--drt-radius);
    white-space:nowrap;
    transition:all .22s var(--drt-ease);
  }
  .sub-nav-box .sub-nav > ul > li > a:hover{
    background:#fff;border-color:var(--drt-blue);color:var(--drt-blue);
    box-shadow:var(--drt-shadow-sm);
  }
  .sub-nav-box .sub-nav > ul > li.active > a{
    background:var(--drt-blue);border-color:var(--drt-blue);color:#fff;font-weight:600;
    box-shadow:0 6px 16px rgba(23,116,199,.24);
  }
  .sub-nav-box .sub-nav > ul > li > ul{
    top:calc(100% + 8px);border-radius:8px;overflow:hidden;
    box-shadow:0 12px 28px rgba(20,50,80,.16);
  }
  /* 子栏目数量少时不要被拉得过宽 */
  .sub-nav-box .sub-nav > ul > li > a{padding-left:14px;padding-right:14px;}
}
@media (max-width:1000px){
  .sub-nav-box-bg{padding:12px 0;}
  .sub-nav-box{padding:0 12px;margin:0;}
  .sub-nav-box .sub-nav > ul{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
  .sub-nav-box .sub-nav > ul > li{width:auto;line-height:1;}
  .sub-nav-box .sub-nav > ul > li > a{
    display:block;height:auto;line-height:1.4;padding:8px 14px;
    font-size:13px;border-radius:4px;
    background:var(--drt-soft);border:1px solid var(--drt-line);color:#4d5864;
    overflow:visible;
  }
  .sub-nav-box .sub-nav > ul > li.active > a{
    background:var(--drt-blue);border-color:var(--drt-blue);color:#fff;
  }
}

/* ---------- 8. 图片列表 / 产品卡片 ---------- */
.product-box .row{display:flex;flex-wrap:wrap;}
.product-box .row .item{padding-bottom:24px;display:flex;}
.product-box .row .item .border-box{display:flex;flex-direction:column;width:100%;}
.product-box .row .item .border-box{
  border:1px solid var(--drt-line);
  border-radius:var(--drt-radius);
  overflow:hidden;
  background:#fff;
  transition:border-color .25s var(--drt-ease),box-shadow .25s var(--drt-ease),transform .25s var(--drt-ease);
}
.product-box .row .item .border-box:hover{
  border-color:rgba(23,116,199,.45);
  box-shadow:var(--drt-shadow);
  transform:translateY(-3px);
}
.product-box .row .item .border-box > a{display:block;background:#fff;padding:8px 8px 0;}
.product-box .row .item .border-box img{
  display:block;width:100%;height:186px;object-fit:contain;
  transition:transform .4s var(--drt-ease);
}
.product-box .row .item .border-box:hover img{transform:scale(1.04);}
.product-box .row .item .border-box .title{padding:16px 18px 20px;flex:1;text-align:left;}
.product-box .row .item .border-box .title .desc{
  margin:8px 0 0;font-size:13.5px;line-height:1.8;color:#5f6b78;font-weight:400;
  text-align:left;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.product-box .row .item .border-box .title a{
  font-size:15.5px;font-weight:600;line-height:1.55;color:#2b333b;text-align:left;
  white-space:normal;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.product-box .row .item .border-box:hover .title a{color:var(--drt-blue);}
.images-list .row .item img{border-radius:var(--drt-radius);}

/* ---------- 9. 新闻列表 ---------- */
.news-list{margin:6px 0 0;}
.news-list .row{border-bottom:1px solid var(--drt-line);margin-left:0;margin-right:0;}
.news-list .row .date li{display:block;}
@media (min-width:1001px){
  .news-list .row{
    margin-bottom:0;padding:22px 0;
    display:flex;align-items:center;
    transition:background .2s var(--drt-ease);
  }
  .news-list .row:hover{background:var(--drt-soft);}
  .news-list .row .date{
    width:76px;height:76px;flex:0 0 76px;
    border-radius:var(--drt-radius);
    display:flex;flex-direction:column;justify-content:center;align-items:center;
    margin-right:24px;background:var(--drt-blue);
  }
  .news-list .row .date li:first-child{font-size:23px;line-height:1.15;font-weight:700;letter-spacing:0;}
  .news-list .row .date li:last-child{font-size:11px;line-height:1.5;opacity:.85;letter-spacing:0;margin-top:2px;}
  .news-list .row .title{flex:1;min-width:0;}
  .news-list .row .title a{font-size:17px;font-weight:500;color:#2b333b;line-height:1.6;}
  .news-list .row .title p{font-size:13.5px;color:#6b7683;line-height:1.8;margin-top:7px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-list .title .time{font-size:13px;color:var(--drt-text-3);}
}
@media (max-width:1000px){
  .news-list .row{padding:14px 0;display:flex;align-items:flex-start;}
  .news-list .row .date{width:58px;height:58px;flex:0 0 58px;border-radius:4px;margin-right:14px;
    display:flex;flex-direction:column;justify-content:center;}
  .news-list .row .date li:first-child{font-size:20px;line-height:1.1;font-weight:700;}
  .news-list .row .date li:last-child{font-size:11px;line-height:1.5;}
  .news-list .row .title{flex:1;min-width:0;}
  .news-list .row .title a,.news-list .row .title a.card1{
    font-size:16px;font-weight:600;line-height:1.5;color:#262d35;
    white-space:normal;text-overflow:clip;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-list .row .title p{font-size:12.5px;line-height:1.7;color:#9aa5b0;margin-top:6px;}
  .news-list .row .title p.card2{
    font-size:13px;line-height:1.65;color:#5f6b78;margin-top:4px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
}

/* ---------- 10. 分页 ---------- */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;margin:40px 0 10px;}
.pagination > li{display:inline-flex;}
.pagination > li > a,
.pagination > li > span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;
  font-size:14px;color:#4d5864;
  border:1px solid var(--drt-line);border-radius:var(--drt-radius);
  background:#fff;transition:all .2s var(--drt-ease);
}
.pagination > li > a:hover{border-color:var(--drt-blue);color:var(--drt-blue);background:var(--drt-soft);}
.pagination > .active > a,
.pagination > .active > span{
  background:var(--drt-blue);border-color:var(--drt-blue);color:#fff;
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb{margin:22px 0;padding:0;background:transparent;font-size:13px;color:var(--drt-text-3);}
.breadcrumb > li + li::before{content:"/";color:#c3ccd4;padding:0 8px;}
.breadcrumb a{color:var(--drt-text-3);}
.breadcrumb a:hover{color:var(--drt-blue);text-decoration:none;}

/* ---------- 12. 表单控件 ---------- */
input[type="text"],input[type="tel"],input[type="email"],input[type="password"],
input[type="search"],textarea,select{
  font-size:14px;color:#2b333b;
  border:1px solid #dbe3ea;border-radius:var(--drt-radius);
  background:#fff;
  transition:border-color .2s var(--drt-ease),box-shadow .2s var(--drt-ease);
}
input[type="text"]:focus,input[type="tel"]:focus,input[type="email"]:focus,
textarea:focus,select:focus{
  outline:none;border-color:var(--drt-blue);
  box-shadow:0 0 0 3px rgba(23,116,199,.12);
}
::placeholder{color:#a9b3bd;}
/* Element UI 表单 */
.el-form-item{margin-bottom:20px;}
.el-form-item__label{
  font-size:14px;color:#4d5864;font-weight:600;
  line-height:1.6;padding-bottom:6px;
}
.el-input__inner,
.el-textarea__inner{
  height:44px;line-height:44px;
  font-size:14px;color:#2b333b;
  border:1px solid #dbe3ea;border-radius:var(--drt-radius);
  padding:0 14px;
  transition:border-color .2s var(--drt-ease),box-shadow .2s var(--drt-ease);
}
.el-textarea__inner{height:auto;line-height:1.8;padding:12px 14px;min-height:140px;}
.el-input__inner:focus,.el-textarea__inner:focus{
  border-color:var(--drt-blue);box-shadow:0 0 0 3px rgba(23,116,199,.12);
}
.el-button--primary{
  height:46px;font-size:15px;font-weight:600;letter-spacing:1px;
  border-radius:var(--drt-radius);background:var(--drt-blue);border-color:var(--drt-blue);
  transition:all .22s var(--drt-ease);
}
.el-button--primary:hover{background:var(--drt-blue-dark);border-color:var(--drt-blue-dark);}

/* ---------- 13. 页脚 ---------- */
footer{
  background:#242b33;
  color:#c8d1da;
  padding-top:56px;
  margin-top:72px;
  font-size:14px;
  line-height:1.9;
}
footer .container{padding-left:24px;padding-right:24px;}
footer h4{
  color:#fff;font-size:16px;font-weight:600;letter-spacing:1px;
  padding-bottom:16px;margin:0 0 18px;position:relative;
}
footer h4::after{
  content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;
  background:var(--drt-blue);border-radius:2px;
}
footer p{color:#9aa6b2;font-size:14px;line-height:2;margin:0;}
footer a{color:#9aa6b2;transition:color .2s var(--drt-ease);}
footer a:hover{color:#fff;text-decoration:none;}
footer .left{padding-right:24px;}
footer .placeholder .font{margin-top:14px;font-size:12.5px;color:#7b8794;line-height:2.2;}
footer .placeholder .font span{padding-right:0;margin-right:14px;cursor:pointer;font-size:12.5px;
  transition:color .2s;}
footer .placeholder .font span:hover{color:#fff;}
footer .ss-box{height:46px;border-radius:var(--drt-radius);overflow:hidden;border:1px solid #3a434d;background:#2e3740;}
footer .ss-box .s-input{height:44px;color:#e6edf3;background:transparent;padding-left:16px;font-size:14px;border:0;}
footer .ss-box .s-input::placeholder{color:#7b8794;}
footer .ss-box .s-btn{height:46px;width:84px;top:0;right:0;font-size:14px;font-weight:500;
  background:var(--drt-blue);border-radius:0;}
footer .container.text-center{padding-top:34px;margin-top:36px;border-top:1px solid rgba(255,255,255,.08);}
footer .container.text-center > div{font-size:13px;color:#7b8794;line-height:2;}
footer .copyright a{color:#7b8794;}
footer .copyright a:hover{color:#fff;}
@media (max-width:1000px){
  footer{padding:0 0 40px;margin-top:44px;padding-top:36px;}
  footer h4{padding-bottom:12px;margin-bottom:12px;font-size:15px;}
  footer .left{padding-right:12px;margin-bottom:24px;}
  .drt-footer__grid{display:block;}
  .drt-footer__col{margin-bottom:28px;}
  .drt-footer__col:last-child{margin-bottom:0;}
  .drt-footer__links{grid-template-columns:1fr 1fr;}
  .drt-footer__bottom{margin-top:8px;padding-top:22px;}
}


/* 页脚三栏（新版结构） */
.drt-footer__grid{display:grid;grid-template-columns:1.1fr .8fr 1.35fr;gap:56px;}
.drt-footer__links{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;margin:0;padding:0;}
.drt-footer__links li{list-style:none;line-height:2.15;}
.drt-footer__links a{position:relative;padding-left:12px;}
.drt-footer__links a::before{
  content:"";position:absolute;left:0;top:50%;width:4px;height:4px;margin-top:-2px;
  border-radius:50%;background:#4a5661;transition:background .2s;
}
.drt-footer__links a:hover::before{background:var(--drt-blue);}
.drt-footer__bottom{
  padding-top:28px;margin-top:44px;border-top:1px solid rgba(255,255,255,.08);
  text-align:center;font-size:13px;color:#7b8794;line-height:2;
}
.drt-footer__bottom a{color:#7b8794;}
.drt-footer__bottom a:hover{color:#fff;}
.drt-footer__bottom .copyright{margin-top:4px;}
footer .ss-box{display:flex;align-items:center;position:relative;padding:0;}
footer .ss-box .s-input{flex:1;width:auto;}

/* ---------- 14. 浮动客服 / 返回顶部 ---------- */
.zaixian{bottom:auto;top:50%;transform:translateY(-50%);}
.zaixian .zaixian_com{width:44px;height:64px;}
.zaixian_com .zxzx_pic1 img{width:44px;height:auto;opacity:.92;}
.zaixian_com .zxzx_pic1 p{top:40px;left:14px;font-size:12px;}
.zaixian_com .zxzx_pic2{right:-200px;top:-40px;}
#ToTop{
  bottom:36px;right:24px;width:44px;height:44px;
  background-color:rgba(23,116,199,.92);border-radius:50%;
  background-image:none;position:fixed;
  box-shadow:0 6px 18px rgba(23,116,199,.3);
  transition:all .22s var(--drt-ease);
}
#ToTop::after{
  content:"";position:absolute;left:50%;top:50%;
  width:10px;height:10px;margin:-3px 0 0 -5px;
  border-left:2px solid #fff;border-top:2px solid #fff;
  transform:rotate(45deg);
}
#ToTop:hover{background-color:var(--drt-blue-dark);background-image:none;transform:translateY(-2px);}

/* ---------- 15. 首页公司简介（两栏图文） ---------- */
.drt-intro{
  padding-top:72px;padding-bottom:64px;
}
.drt-intro::after{content:"";display:block;clear:both;}
.drt-intro__media{float:left;width:300px;max-width:300px;}
.drt-intro__media img{display:block;width:100%;height:auto;}
.drt-intro__body{margin-left:364px;max-width:780px;}
.drt-intro__body p{
  font-size:15px;line-height:2;color:#3d4854;
  margin:0 0 15px;text-align:justify;text-justify:inter-ideograph;
}
.drt-intro__body p:last-child{margin-bottom:0;}
@media (max-width:1000px){
  .drt-intro{padding-top:34px;padding-bottom:30px;}
  .drt-intro__media{float:none;width:auto;max-width:190px;margin:0 auto 26px;}
  .drt-intro__body{margin-left:0;}
  .drt-intro__body p{font-size:15px;line-height:1.9;margin-bottom:12px;}
}

/* ---------- 16. 图文分栏（关于我们等单页） ---------- */
.drt-split{padding-bottom:12px;}
.drt-split::after{content:"";display:block;clear:both;}
.drt-split__media{float:left;width:340px;max-width:340px;margin-right:56px;}
.drt-split__media img{display:block;width:100%;height:auto;}
.drt-split__body{margin-left:396px;}
.drt-split__body p{
  font-size:15px;line-height:2;color:#3d4854;
  margin:0 0 16px;text-align:justify;text-justify:inter-ideograph;
}
.drt-split__body p.drt-lead{
  font-size:17px;line-height:1.9;color:#2b333b;
  padding:2px 0 2px 20px;border-left:3px solid var(--drt-blue);
  margin:0 0 26px;background:linear-gradient(90deg,rgba(23,116,199,.05),transparent 70%);
}
@media (max-width:1000px){
  .drt-split{padding-bottom:12px;}
  .drt-split__media{float:none;width:auto;max-width:220px;margin:0 auto 26px;}
  .drt-split__body{margin-left:0;}
  .drt-split__body p{font-size:15px;line-height:1.9;}
  .drt-split__body p.drt-lead{font-size:16px;line-height:1.8;padding-left:16px;}
}


/* ---------- 18. 联系我们 ---------- */
.drt-contact{padding-bottom:36px;}
.drt-contact__grid{
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:56px;align-items:start;
}
.drt-block-title{
  font-size:20px;font-weight:700;color:#1f262d;line-height:1.3;
  margin:0 0 22px;padding:2px 0 2px 14px;border-left:3px solid var(--drt-blue);
}
.drt-info-list p{
  display:grid;grid-template-columns:86px minmax(0,1fr);gap:8px 14px;
  margin:0;padding:15px 0;
  border-bottom:1px dashed var(--drt-line);
  font-size:15px;line-height:1.75;color:#3d4854;
}
.drt-info-list p strong{
  font-weight:600;color:#8b959f;font-size:14px;letter-spacing:.5px;
}
.drt-info-list p span{word-break:break-word;}
.drt-info-list p:first-child{padding-top:4px;}
.drt-contact__note{
  margin:22px 0 0;font-size:13px;color:#8b959f;line-height:1.8;
}
.drt-contact__note .fa{margin-right:6px;color:var(--drt-blue);}
.drt-form-card{background:var(--drt-soft);border:1px solid var(--drt-line);
  border-radius:10px;padding:28px 30px 14px;}
.drt-map{margin-top:52px;border-radius:10px;overflow:hidden;border:1px solid var(--drt-line);}
.drt-map #mapbox{height:380px;}
@media (max-width:1000px){
  .drt-contact__grid{display:block;}
  .drt-contact__info{margin-bottom:38px;}
  .drt-form-card{padding:20px 16px 8px;}
  .drt-map{margin-top:32px;}
  .drt-map #mapbox{height:260px;}
  .drt-block-title{font-size:18px;}
}


/* ---------- 18.5 栏目空状态 ---------- */
.drt-empty{padding:54px 0 66px;}
.drt-empty__box{
  max-width:600px;margin:0 auto;text-align:center;
  background:var(--drt-soft);border:1px dashed #d3e1ef;border-radius:12px;
  padding:50px 38px 48px;
}
.drt-empty__box > i{display:block;font-size:38px;color:#b7cbdf;margin-bottom:20px;}
.drt-empty__box h3{font-size:19px;font-weight:700;color:#1f262d;margin:0 0 12px;line-height:1.4;}
.drt-empty__box p{font-size:14.5px;line-height:1.9;color:#5f6b78;margin:0 0 24px;}
.drt-empty__box p a{color:var(--drt-blue);border-bottom:1px solid rgba(23,116,199,.35);}
.drt-empty__box p a:hover{border-bottom-color:var(--drt-blue);}
@media (max-width:1000px){
  .drt-empty{padding:30px 0 40px;}
  .drt-empty__box{padding:38px 22px 34px;border-radius:10px;}
  .drt-empty__box > i{font-size:32px;margin-bottom:14px;}
  .drt-empty__box h3{font-size:17px;}
  .drt-empty__box p{font-size:14px;}
}

/* ---------- 19. 单条栏目详情（产品工艺页） ---------- */
.drt-single{padding-bottom:18px;}
.drt-single__head{
  display:flex;align-items:center;gap:48px;margin-bottom:38px;
  background:var(--drt-soft);border:1px solid var(--drt-line);
  border-radius:10px;padding:30px 34px;
}
.drt-single__media{flex:0 0 360px;width:360px;max-width:360px;}
.drt-single__media img{display:block;width:100%;height:auto;
  border:1px solid var(--drt-line);border-radius:8px;background:#fff;}
.drt-single__intro{flex:1;min-width:0;}
/* 条目较少时卡片居中，避免单张卡孤零零靠左 */
.product-box ul.row.is-center{display:flex;flex-wrap:wrap;justify-content:center;}
.product-box ul.row.is-center > li{float:none;}

/* 条目较少时卡片居中，避免单张卡孤零零靠左 */
.product-box ul.row.is-center{display:flex;flex-wrap:wrap;justify-content:center;}
.product-box ul.row.is-center > li{float:none;}

/* 超宽缩略图（宽高比 > 2.2）自动改为上下布局，避免小图悬在左侧 */
.drt-single__head.is-wide{display:block;}
.drt-single__head.is-wide .drt-single__media{
  width:100%;max-width:860px;flex:none;margin:0 auto 26px;
}
.drt-single__head.is-wide .drt-single__media img{width:100%;height:auto;}
.drt-single__head.is-wide .drt-single__intro{max-width:860px;margin:0 auto;}
.drt-single__head.is-wide .drt-single__intro{max-width:860px;margin:0 auto;}
.drt-single__title{
  font-size:25px;line-height:1.35;color:#1f262d;font-weight:700;margin:0 0 16px;
}
.drt-single__desc{
  font-size:16px;line-height:2;color:#4d5864;margin:0 0 26px;
}
.drt-single__btn{
  display:inline-block;padding:11px 26px;font-size:14px;font-weight:600;
  color:#fff;background:var(--drt-blue);border-radius:var(--drt-radius);
  transition:background .2s var(--drt-ease);
}
.drt-single__btn:hover{background:var(--drt-blue-dark);color:#fff;}
.drt-single__btn .fa{margin-left:6px;font-size:13px;}
/* 头部按钮改为描边次级样式，与底部「获取报价」主按钮区分 */
.drt-single__head .drt-single__btn{
  background:#fff;color:var(--drt-blue);
  border:1px solid rgba(23,116,199,.45);
}
.drt-single__head .drt-single__btn:hover{
  background:var(--drt-blue);color:#fff;border-color:var(--drt-blue);
}
.drt-single__cta{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  margin:46px 0 8px;padding:26px 34px;border-radius:10px;
  background:linear-gradient(90deg,#eef5fc 0%,#f8fbfe 100%);
  border:1px solid #dbe8f6;
}
.drt-single__cta .txt{min-width:0;}
.drt-single__cta strong{
  display:block;font-size:17px;font-weight:700;color:#1f262d;
  line-height:1.4;margin-bottom:7px;
}
.drt-single__cta span{font-size:13.5px;line-height:1.7;color:#5f6b78;}
.drt-single__body{max-width:900px;margin-left:0;margin-right:0;padding-top:0;}
.drt-single__body h3{
  font-size:19px;color:#1f262d;font-weight:700;line-height:1.4;
  margin:34px 0 14px;padding-left:13px;border-left:3px solid var(--drt-blue);
}
.drt-single__body ul{margin:0 0 18px;padding-left:0;}
.drt-single__body ul li{
  list-style:none;position:relative;padding-left:18px;
  margin:9px 0;line-height:1.9;color:#3d4854;font-size:15px;
}
.drt-single__body ul li::before{
  content:"";position:absolute;left:2px;top:11px;
  width:5px;height:5px;border-radius:50%;background:var(--drt-blue);
}
@media (max-width:1000px){
  .drt-single__head{display:block;margin-bottom:24px;padding:18px 18px 22px;border-radius:8px;}
  .drt-single__media{width:auto;max-width:100%;margin:0 0 20px;}
  .drt-single__cta{flex-direction:column;align-items:flex-start;gap:16px;
    margin:30px 0 6px;padding:22px 20px;}
  .drt-single__cta strong{font-size:16px;}
  .drt-single__cta span{font-size:13px;}
  .drt-single__title{font-size:20px;margin-bottom:12px;}
  .drt-single__desc{font-size:14px;margin-bottom:18px;}
  .drt-single__body h3{font-size:17px;margin:26px 0 12px;}
  .drt-single__body ul li{font-size:14px;margin:7px 0;}
}


/* ---------- 20. 移动端头部（logo / 菜单按钮） ---------- */
@media (max-width:1000px){
  .header{height:auto;line-height:normal;}
  .header .container{position:relative;}
  .header .row{display:block;}
  .header .logo-box{
    height:60px;line-height:60px;padding:0 62px 0 0;overflow:hidden;
  }
  .header .logo{display:inline-block;vertical-align:middle;line-height:1;}
  .header .logo img{
    max-height:30px;width:auto;max-width:190px;vertical-align:middle;
  }
  .header .nav-toggle{
    position:absolute;right:0;top:0;z-index:20;
    width:52px;height:60px;line-height:60px;min-width:52px;
    font-size:20px;color:#4d5864;
  }
  /* 展开态菜单项分隔与层级 */
  .nav{box-shadow:-6px 0 24px rgba(0,0,0,.12);}
  .nav ul li a{font-size:15px;line-height:3.2;}
  .nav ul li ul li a{font-size:14px;}
  footer{padding-bottom:78px;}
}


/* ---------- 20. 移动端头部（logo / 菜单按钮） ---------- */
@media (max-width:1000px){
  .header{height:auto;line-height:normal;}
  .header .container{position:relative;}
  .header .row{display:block;}
  .header .logo-box{
    height:60px;line-height:60px;padding:0 62px 0 0;overflow:hidden;
  }
  .header .logo{display:inline-block;vertical-align:middle;line-height:1;}
  .header .logo img{
    max-height:30px;width:auto;max-width:190px;vertical-align:middle;
  }
  .header .nav-toggle{
    position:absolute;right:0;top:0;z-index:20;
    width:52px;height:60px;line-height:60px;min-width:52px;
    font-size:20px;color:#4d5864;
  }
  /* 展开态菜单项分隔与层级 */
  .nav{box-shadow:-6px 0 24px rgba(0,0,0,.12);}
  .nav ul li a{font-size:15px;line-height:3.2;}
  .nav ul li ul li a{font-size:14px;}
  footer{padding-bottom:78px;}
}


/* ---------- 21. 首页业务领域网格 ---------- */
.drt-domains{margin-top:6px;display:flex;flex-wrap:wrap;}
.drt-domains .home-linebox{text-align:center;}
.drt-domains .home-linebox img{max-width:100%;}
@media (max-width:767px){
  .drt-domains > [class*="col-"]{width:50%;float:none;}
  .drt-domains .home-linebox{margin-bottom:22px;}
  .drt-domains .home-linebox img{max-width:104px;margin-bottom:12px;}
  .drt-domains .home-linebox .title{font-size:15px;margin-bottom:0;}
  /* 服务数据区负边距在手机上会把下一区块顶穿 */
  .service-bg,section .service-bg{margin-bottom:0;}
  .service-bg .row .num{font-size:20px;line-height:1.35;white-space:nowrap;letter-spacing:0;}
  .service-bg .row .fonts{font-size:12px;padding-top:10px;letter-spacing:0;}
  .service-bg .row i{width:46%;}
  .service-bg .row > div{padding-left:3px;padding-right:3px;}
}


/* ---------- 21. 首页业务领域网格 ---------- */
.drt-domains{margin-top:6px;display:flex;flex-wrap:wrap;}
.drt-domains .home-linebox{text-align:center;}
.drt-domains .home-linebox img{max-width:100%;}
@media (max-width:767px){
  .drt-domains > [class*="col-"]{width:50%;float:none;}
  .drt-domains .home-linebox{margin-bottom:22px;}
  .drt-domains .home-linebox img{max-width:104px;margin-bottom:12px;}
  .drt-domains .home-linebox .title{font-size:15px;margin-bottom:0;}
  /* 服务数据区负边距在手机上会把下一区块顶穿 */
  .service-bg,section .service-bg{margin-bottom:0;}
  .service-bg .row .num{font-size:20px;line-height:1.35;white-space:nowrap;letter-spacing:0;}
  .service-bg .row .fonts{font-size:12px;padding-top:10px;letter-spacing:0;}
  .service-bg .row i{width:46%;}
  .service-bg .row > div{padding-left:3px;padding-right:3px;}
}


/* 青色数据区取消负底边距：原 -80px 会把紧随的「业务领域」标题拽到色块上 */
.service-bg,section .service-bg{margin-bottom:0;}

/* 青色数据区取消负底边距：原 -80px 会把紧随的「业务领域」标题拽到色块上 */
.service-bg,section .service-bg{margin-bottom:0;}

/* ---------- 22. 首页区块容器 ---------- */
.drt-sec{padding:8px 0 26px;}
.drt-sec--gray{background:#f7f9fb;padding:8px 0 40px;}
.drt-sec--news{padding:8px 0 20px;}
.drt-sec .home-headline{margin-top:56px;}
.drt-sec--gray .home-headline{margin-top:52px;}

/* 认证卡片 */
.drt-certs{display:flex;flex-wrap:wrap;}
.drt-certs > [class*="col-"]{margin-bottom:18px;}
.drt-cert{
  background:#fff;border-top:3px solid var(--drt-blue);border-radius:0 0 6px 6px;
  padding:22px 22px 24px;height:100%;
  box-shadow:0 2px 10px rgba(23,116,199,.05);
}
.drt-cert .t{font-size:19px;font-weight:700;color:var(--drt-blue);margin:0 0 8px;line-height:1.3;}
.drt-cert .d{font-size:14px;color:#5a6672;margin:0;line-height:1.8;}

/* 信息系统 */
.drt-systems{display:flex;flex-wrap:wrap;}
.drt-system{
  display:flex;align-items:center;gap:22px;
  background:#fff;border:1px solid var(--drt-line);border-radius:8px;
  padding:22px 26px;height:100%;
}
.drt-system img{max-height:52px;width:auto;flex:0 0 auto;}
.drt-system .t{font-size:17px;font-weight:700;color:#1f262d;margin:0 0 4px;line-height:1.3;}
.drt-system .d{font-size:13.5px;color:#7b8794;margin:0;line-height:1.7;}

/* 荣誉证书 */
.drt-honors{display:flex;flex-wrap:wrap;}
.drt-honors > [class*="col-"]{margin-bottom:18px;}
.drt-honor{
  background:#fff;border:1px solid var(--drt-line);border-radius:8px;
  padding:24px 16px 22px;text-align:center;height:100%;
}
.drt-honor img{max-width:100%;height:150px;object-fit:contain;display:block;margin:0 auto 14px;}
.drt-honor__badge{display:block;width:148px;height:148px;margin:0 auto 16px;}
.drt-honor .t{font-size:14.5px;color:#3d4854;margin:0;line-height:1.6;font-weight:500;}

/* 新闻更多 */
.drt-news-more{text-align:center;margin-top:34px;}
.drt-news-more a{
  display:inline-block;padding:11px 30px;border:1px solid var(--drt-line);border-radius:999px;
  font-size:14px;color:#5a6672;transition:all .22s var(--drt-ease);
}
.drt-news-more a:hover{border-color:var(--drt-blue);color:var(--drt-blue);background:#fff;}
.drt-news-more .fa{margin-left:6px;font-size:12px;}

@media (max-width:1000px){
  .drt-sec,.drt-sec--gray,.drt-sec--news{padding:4px 0 18px;}
  .drt-sec .home-headline,.drt-sec--gray .home-headline{margin-top:34px;}
  .drt-cert{padding:16px 16px 18px;}
  .drt-cert .t{font-size:16px;letter-spacing:0;}
  .drt-cert .d{font-size:13px;line-height:1.7;}
  .drt-system{padding:16px 18px;gap:16px;}
  .drt-system img{max-height:40px;}
  .drt-honor img{height:120px;}
  .drt-honor{padding:18px 12px 16px;}
  .drt-honor__badge{width:104px;height:104px;margin-bottom:12px;}
  .drt-honor .t{font-size:13px;line-height:1.55;}
  .drt-honors > [class*="col-"]{margin-bottom:14px;}
  .drt-certs > [class*="col-"]{margin-bottom:14px;}
}
@media (max-width:479px){
  .drt-system{flex-direction:column;text-align:center;gap:10px;}
}

/* ---------- 17. 页内按钮（保留原有少量 .btn 场景） ---------- */
.btn-more,.more a{font-style:normal;}

/* ---------- 16. 响应式细节 ---------- */
@media (max-width:1000px){
  body{font-size:15px;line-height:1.8;}
  .container{padding-left:16px;padding-right:16px;}
  .row{margin-left:-8px;margin-right:-8px;}
  .row > [class*="col-"]{padding-left:8px;padding-right:8px;}
  .home-headline{margin:34px 0 24px;}
  .home-headline .tit{font-size:22px;letter-spacing:1px;}
  .home-headline i{margin:14px auto 0;width:36px;}
  .home-headline .titmax{padding:0;font-size:14px;}
  .info-content{font-size:15px;line-height:1.9;}
  .product-box .row .item .border-box img{height:150px;}
  .product-box .row .item .border-box .title a{font-size:14px;}
  h1{font-size:26px;} h2{font-size:22px;} h3{font-size:19px;} h4{font-size:17px;}
  .zaixian{display:none;}
  #ToTop{right:14px;bottom:22px;width:40px;height:40px;}
  /* 隐藏态侧边菜单不得撑出横向滚动 */
  .nav:not(.active){overflow:hidden;visibility:hidden;}
  .nav.active{visibility:visible;}
  /* 隐藏态侧边菜单不得撑出横向滚动 */
  .nav:not(.active){overflow:hidden;visibility:hidden;}
  .nav.active{visibility:visible;}
}
@media (max-width:767px){
  .container{padding-left:14px;padding-right:14px;}
  .home-headline{margin:28px 0 20px;}
  .product-box .row .item{padding-bottom:16px;}
  .product-box .row .item .border-box img{height:130px;}
  .product-box .row .item .border-box .title{padding:10px 8px 12px;}
  .product-box .row .item .border-box .title a{font-size:13px;-webkit-line-clamp:2;}
  .info-content table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:479px){
  .product-box .row .item .border-box img{height:112px;}
}


/* ---------- 23. 移动端覆盖（必须放在文件末尾以保证优先级） ---------- */
@media (max-width:1000px){
  .drt-footer__grid{display:block;gap:0;}
  .drt-footer__col{margin-bottom:26px;}
  .drt-footer__col:last-child{margin-bottom:0;}
  .drt-footer__links{grid-template-columns:1fr 1fr;gap:0 14px;}
  .drt-footer__bottom{margin-top:6px;padding-top:22px;}
  footer{padding-bottom:84px;}
}


/* ---------- 23. 移动端覆盖（必须放在文件末尾以保证优先级） ---------- */
@media (max-width:1000px){
  .drt-footer__grid{display:block;gap:0;}
  .drt-footer__col{margin-bottom:26px;}
  .drt-footer__col:last-child{margin-bottom:0;}
  .drt-footer__links{grid-template-columns:1fr 1fr;gap:0 14px;}
  .drt-footer__bottom{margin-top:6px;padding-top:22px;}
  footer{padding-bottom:84px;}
}

/* 窄屏（手机）认证卡改单列，避免 ESD 标准号被硬拆行 */
@media (max-width:640px){
  .drt-certs > [class*="col-"]{width:100%;float:none;}
  .drt-certs .drt-cert{padding:18px 20px 20px;}
  .drt-certs .drt-cert .t{font-size:17px;}
  .drt-certs .drt-cert .d{font-size:13.5px;line-height:1.75;}
}

/* 窄屏（手机）认证卡改单列，避免 ESD 标准号被硬拆行 */
@media (max-width:640px){
  .drt-certs > [class*="col-"]{width:100%;float:none;}
  .drt-certs .drt-cert{padding:18px 20px 20px;}
  .drt-certs .drt-cert .t{font-size:17px;}
  .drt-certs .drt-cert .d{font-size:13.5px;line-height:1.75;}
}

/* ---------- 17. 打印 ---------- */
@media print{
  .header-top,.header,.sub-nav-box-bg,.zaixian,#ToTop,footer{display:none !important;}
  body{font-size:12pt;color:#000;}
}

/* SEO：栏目标题语义化后的重置 */
.home-headline h2.tit{margin:0;padding:0;font-weight:bold;line-height:1.3;}