/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  background: #f5f7fa;
  color: #333;
  line-height: 1.6;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: #333;
  -webkit-tap-highlight-color: transparent;
}
ul {
  list-style: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}


/* ==============================================
   头部导航（PC + 移动端通用样式）
================================================= */
.iconfont{font-size: 20px !important;}
.logo1600{display: block}
.logo1200{display: none}
.banner_h5{display: none}
.ccid_h5{display: none;}
.h5_tel{display: none}
.banner{margin-top: 107px;}
.header {
  background: #fff;
  color: #333;
  padding: 0px 0;
  position: relative;
  z-index: 99;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  width: 100%;
  padding-top: 10px;
}
.header-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}
.logo {
  font-size: 24px;
  font-weight: bold;
  color: #0052cc;
  flex: none;
  width: 400px;
}
.logo  img{width: 100%;}
.search_div{margin-right: 20px;}
.search_div .icon-sousuo{margin-left: 25px;}
/* PC导航基础样式 */
.nav {
  display: flex;
  gap: 10px;
  align-items: center;
  flex: 1;
  margin-left: 50px;
}
.nav > li {
  position: relative;
  padding: 10px 12px;
}
.nav a {
  color: #333;
  font-size: 18px;
  font-weight: 500;
  white-space: nowrap;
  transition: 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight:normal;
  line-height: 80px;
}
.nav a:hover {
  color: #0052cc;
}

/* 轮播基础样式 */
.swiper {
  width: 100%;
  height: 450px; /* 你可以自己改高度 */
  overflow: auto;
}
.swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 图片不变形铺满 */
  display: block;
}
.swiper-pagination-bullet-active{background: #fff !important;}
.swiper-pagination-bullet{background: #ccc !important;width: 12px;height: 12px;}
.
/* ==============================================
   页面内容样式（已自动适配分辨率）
================================================= */
.banner {
  color: #fff;
  /*aspect-ratio: 16 / 3;
  background-size: cover;
  background-blend-mode: overlay;*/
  margin-top: 107px;
  height: 434px;
}
.banner-text {
  max-width: 700px;
}
.banner h1 {
  font-size: 42px;
  margin-bottom: 20px;
}
.banner p {
  font-size: 22px;
  opacity: 0.9;
}
.banner-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}
.side-btn {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.side-btn a {
  background: rgba(255,255,255,0.2);
  padding: 15px 25px;
  border-radius: 8px;
  text-align: center;
  color: #fff;
  font-size: 16px;
}

/* 模块标题 */
.module-title {
  text-align: center;
  margin: 60px 0 30px;
}
.module-title h2 {
  font-size: 36px;
  color: #222;
  font-weight: 500;
}
.module-title p {
  color: #666;
  font-size: 16px;
}

/* 以下样式保持不变（标签切换、列表、卡片、表单、底部等） */
/* 篇幅原因，中间原有样式保持完整不变 */
.tab-nav {
  display: flex;
  justify-content: center;
  gap:30px;
  margin-bottom: 30px;
  margin-top: 35px;
  width: 95%;margin:0 auto;
}
.tab-nav span {
  padding: 10px 5px;
  background: #e8eeff;
  border-radius: 30px;
  font-size: 12px;
  cursor: pointer;color: #3a63dc;
  font-weight: bold;
}
.tab-nav span.active {
  background: #0052cc;
  color: #fff;
  font-weight: bold;
}
.tab-content .tab-panel { display: none; }
.tab-content .tab-panel.active { display: block; }

.news-list {


  margin-bottom: 60px;
}
.news-item {
  padding: 10px 0;
}
.news-item a {
  font-size: 18px;
  line-height: 1.6;
}
.news-item a:hover{ color:#065195 }
.news-item a  span{font-size: 14px; color: #b5b2ae;margin-right: 5px;}
.news-item .time {
  float: right;
  color: #999;
  font-size: 16px;
}

.pc_list{display: block;  display: grid;grid-template-columns: repeat(2, 1fr);  gap: 10px 160px;}
.h5_list{display: none}

.service-wrap {
  background-size: cover;
  margin: 30px 0;
}
.service-wrap-div{width: 100%;background: url(../images/backg_1.jpg) top center no-repeat;height: 590px;}
/* 竖六边形：上下尖 + 左右竖线 */
.service-grid {
  width:1090px;
  height:550px;
  margin:0 auto;
  position:relative;
}
.service-card {
  width: 240px;
  height: 278px;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  background:#f5f7fa;
  text-align:center;
  overflow:hidden;
  position:absolute;
}
.hover-bg {
  position:absolute;
  left:0;top:0;
  width:100%;height:100%;
  background:#095eb5;
  z-index:1;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  display:none;
}
.service-card a {
  display:block;
  width:100%;height:100%;
  padding:20px;
  position:relative;
  z-index:2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-decoration:none;
}

/* 标题英文 默认文字 渐隐渐显 0.5s */
.service-card .title {
  font-size:28px;
  margin-bottom:15px;
  color:#095eb5;
  font-weight:bold;
  transition: opacity 1.5s ease;
  opacity: 1;
}
.service-card .en {
  font-size:12px;
  color:#095eb5;
  transition: opacity 0.5s ease;
  opacity: 1;
}

/* 核心：hover-text 过渡0.5秒 离开慢慢透明消失 */
.service-card .hover-text {
  font-size:16px;
  color:#fff;
  line-height:1.6;
  text-align:center;
  position:absolute;
  left:0;right:0;top:50%;transform:translateY(-50%);
  padding:0 20px;
  transition: opacity 1.5s ease;
  opacity: 0;
}

/* hover 状态切换透明度 */
.service-card:hover .title,
.service-card:hover .en {
  opacity: 0;
}
.service-card:hover .hover-text {
  opacity: 1;
}

/* 卡片定位 */
.card1{top:37px;left:0;}
.card2{top:37px;left:280px;}
.card3{top:37px;left:565px;}
.card4{top:37px;left:844px;}
.card5{top:263px;left:141px;}
.card6{top:263px;left:417px;}
.card7{top:263px;left:704px;}

.hover-bg {
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:100%;
  background:#095eb5;
  z-index:1;
  /* 关键：不要 display:none */
  display:block;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.report-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}
.report-wrap{display: flex;gap: 100px;}
.report-card {
  overflow: hidden;
  width: 50%;
  
}
.report-card h2{height: 75px;border-bottom: 1px #c0cff5 solid;font-size: 20px;color: #3d434f; line-height: 75px;padding-left: 74px; position: relative;top: 0;left: 0;}
.icon1{background: url(../images/icon1.png) top left no-repeat;padding-left: 85px !important;}
.icon2{background: url(../images/icon2.png) top left no-repeat;padding-left: 80px !important;}
.report-img {
  height: 220px;
  object-fit: cover;
  width: 100%;
}
.report-info {
  padding: 25px;
}
.report-info h3 {
  font-size: 20px;
  margin-bottom: 15px;
}
.report-info p {
  font-size: 15px;
  color: #666;
}

.more1{position: absolute;top: 5px;right: 0;font-size: 14px;color: #3d434f;}
.more1:hover{color:#3a63dc}
.plist1{display: flex;gap: 40px;margin-top: 25px;}
.plist1_img{height: 218px; width: 162px;flex: none;}
.plist1_zi{flex: 1;position: relative;top: 0;left: 0;}
.plist1_tittle{text-align: left;}
.plist1_tittle a{font-size: 22px; color: #000000; line-height: 30px;font-weight: bold;}
.plist1_tittle a:hover{color:#3a63dc}
.plist1_p{font-size: 16px; color: #000000; line-height: 26px;font-weight:normal;margin-top: 10px;}
.plist1_tag{display: flex;gap: 20px;width: 100%;position: absolute;bottom: 0;}
.tag_btn{width: 150px;height: 30px;background: #3a63dc;border-radius: 5px; color: #fff;text-align: center;font-size: 20px; line-height: 30px}
.tag_btn:hover{background: #e60012}
.tag_dld{color: #333;font-size: 14px;}
.tag_dld:hover{color:#3a63dc}
.tag_txt{color: #333;font-size: 14px;}

.more3{padding:5px 3px;margin:0 auto;font-size: 14px;display: block;text-align: left; color: #333333;margin-top: 10px;background: url(../images/arrow-link-red.png) center left no-repeat;padding-left: 20px;background-size:15px;float: right;}
.more3:after{clear: both;}

.more4{padding:5px 3px;margin:0 auto;font-size: 14px;display: block;text-align:center; color: #3a63dc;margin-top: 10px;margin:20px auto}
.more4:after{clear: both;}

.plist1-list {
  display:block;
  margin-top: 85px;
}
.plist1-item {
  padding: 10px 0;
}
.plist1-item a {
  font-size: 18px;
  line-height: 1.6;
}
.plist1-item a:hover{color:#3a63dc}
.plist1-item a  span{font-size: 14px; color: #b5b2ae;margin-right: 5px;}
.plist1-item .time {
  float: right;
  color: #999;
  font-size: 16px;
}

.icon3{background: url(../images/);}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}
.project-card {
  background: #fff;
  border-radius: 0px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  padding:40px;
   position: relative;
    overflow: hidden;
    cursor: pointer;

}

/* 图片从右侧进入 */
  .slide-img {
    position: absolute;
    right: 0;
    top: 0;
    width: 0;
    height: 100%;
    background: url('../images/pic2.jpg') top left no-repeat;
    background-size: cover;
    background-position: right center;
    transition: all 0.4s ease;

    /* 🔥 关键：进入时 左上 + 左下 大圆角 */
    border-top-left-radius: 160px;
    border-bottom-left-radius: 160px;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    z-index: 10;
  }

  /* 鼠标悬停铺满 → 变直角 */
  .project-card:hover .slide-img {
    width: 100%;
    border-radius: 0; /* 铺满后全部直角 */
  }
.project-card h2{text-align: left;position: relative;top: 0;left: 0;z-index: 11}
.project-card h2 a{font-size: 24px;color: #000;font-weight: bold;}

.project-card h3{text-align: left;margin-top: 40px;position: relative;top: 0;left: 0;z-index: 11}
.project-card h3 a{font-size: 18px;color: #000;font-weight: bold;}

.project-card h4{text-align: left;margin-top: 30px;position: relative;top: 0;left: 0;z-index: 11}
.project-card h4 a{width: 108px;height: 40px;display: block;text-align: center;color: #fff;font-size: 16px;background: #e60012;border-radius: 30px;line-height: 40px;}


.project-card:hover h2 a{color: #fff;}
.project-card:hover h3 a{color: #fff;}


.ccid-kouhao{width: 885px;margin:0 auto;display: flex;gap: 10px}
.ccid-kouhao .span1{width: 18px;flex: none;}
.ccid-kouhao .span2{flex: 1;text-align: left;font-size: 20px; color: #5d6473; line-height: 30px;font-weight: bold; position: relative;top: 10px;left: 0;display: flex;}
.ccid-kouhao .span2 b{flex: 1}

.advantage-banner {
  padding: 0px 0;
  margin: 30px 0;
}
.advantage-wrap {
  position: relative;    /* 让内部绝对定位生效 */
  width: 100%;
  aspect-ratio: 1920 / 542; /* 保持你要的比例 */
  margin-top: clamp(10px, 1.2vw, 20px);
  overflow: hidden;
}

.ccid-jj {
  position: absolute;
  right: clamp(30px, 4.8vw, 75px); /* 右边距自适应 */
  top: clamp(40px, 5.2vw, 50px);  /* 上边距自适应 */
  width: clamp(600px, 48.7%, 880px); /* 宽度自适应 */
}

.ccid-jj h2 {
  font-size: clamp(20px, 1.8vw, 26px); /* 字号自适应 */
  color: #3d434f;
  line-height: 1.4;
  font-weight: bold;
}

.ccid-jj p {
  font-size: clamp(14px, 1vw, 16px);  /* 字号自适应 */
  color: #3d434f;
  line-height: 1.8;
  font-weight: normal;
  margin-top: clamp(8px, 1vw, 15px);
}

.more2{background: #e60012;border-radius: 40px;text-align: center;font-size: 14px;padding:5px 20px;width: 100px;margin-top: 40px;}
.more2 a{color: #fff;font-size: 14px;}
.list_rz{margin-top: 20px;text-align: left;display: flex;}
.list_rz span{flex: 1; color: #5d6473;font-size: 20px;font-weight: bold;}
.list_rz span a{ color: #5d6473;font-size: 20px;font-weight: bold;}
.list_rz span b{margin-right: 10px;color: #5d6473;font-size: 20px;}
.list_rz span:hover a{color: #040404;}
.list_rz span:hover b{color: #040404;}

.clear {
  clear: both;
}


.mb_list{width: 100%;margin-top: 100px;display: flex;gap: 52px;}
.mb1{background: url(../images/mb1.png) top center no-repeat; background-size: cover;background-blend-mode: overlay;flex: 1;box-shadow: 0 8px 24px rgba(0,0,0,0.15);transition: all 0.3s ease;border-radius: 20px;padding:10px;padding-bottom: 30px;}
.mb_img_p{width: 100%;margin-top: 20px;padding:0 15px;}
.mb_img_p h2{text-align: center;line-height: 1;padding-top: 10px;}
.mb_img_p h2 a{color: #000000;font-size: 18px;}
.mb_img_p p{color: #686a68;font-size: 14px;line-height: 1.5;margin-top: 10px;}
.mb_img{border-radius: 30px}
.mb_img img{width: 100%;}

.advantage-left,
.advantage-right {
  flex: 1;
  min-width: 300px;
}
.advantage-right { padding: 20px; }
.advantage-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.advantage-small-card {
  background: #fff;
  border-radius: 15px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.customer-tab {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
}
.customer-tab span {
  padding: 10px 25px;
  border-radius: 30px;
  font-size: 16px;
  cursor: pointer;
}
.customer-tab span.active {
  background: #0052cc;
  color: #fff;
}
/* 客户LOGO 容器 —— 全设备自适应 */
.customer-logo {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;form-right
  padding: 20px 0;
  width: 100%;
  max-width: 1600px;    /* 最大宽度，避免过大难看 */
  margin: 0 auto;      /* 居中 */
  position: relative;
}

/* 统一给每个LOGO外层包一层，解决边框重叠 + 自适应 */
.customer-logo .item {
  box-sizing: border-box;
  border: 1px solid #e5e5e5;
  margin-left: -1px;   /* 消除左边重叠边框 */
  margin-top: -1px;    /* 消除上边重叠边框 */
  display: flex;
  justify-content: center;
  align-items: center;
  padding:5px;
}

/* 图片样式 */
.customer-logo .item img {
  height: auto;
  width: 100%;
  filter: grayscale(0.1);
  object-fit: contain;
}

.form-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin: 60px auto;
  max-width: 1500px;
}
.form-left,
.form-right {
  flex: 1;
  min-width: 300px;
}
.form-right h3{text-align: left;font-size: 26px;}
.form-right h4{text-align: left;font-size: 12px;margin-top: 20px;margin-bottom: 20px;}
/* 表单布局左右结构 */
.form-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 30px;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 15px;
}
.form-left {
  flex: 1;
}
.form-left img {
  width: 100%;
  display: block;
}
.form-right {
  flex: 1;
  min-width: 300px;
}

/* 标题 */
.form-right h3 {
  font-size: 24px;
  color: #333;
  margin-bottom: 10px;
}
.form-right h4 {
  font-size: 14px;
  color: #666;
  font-weight: normal;
  margin-bottom: 25px;
}

/* 一行两列布局 */
.form-row {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
}
.form-row .form-item {
  flex: 1;
}

/* 输入框样式 */
.form-item input,
.form-item textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
  font-size: 14px;
  box-sizing: border-box;
  outline: none;
  transition: border 0.3s;
}
.form-item input:focus,
.form-item textarea:focus {
  border-color: #0066cc;
}

/* 多行输入框 */
.form-textarea {
  margin-bottom: 20px;
}

/* 提交按钮 */
.form-btn {
  width: 100%;
  height: 46px;
  background: #0066cc;
  color: #fff;
  font-size: 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}
.form-btn:hover {
  background: #0052aa;
}
.form-btn {
  background: #0052cc;
  color: #fff;
  border: none;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
}

.footer {
  background: #025e9f;
  color: #fff;
  padding: 40px 0;
  margin-top: 60px;
}
.footer-wrap-div {
  display: flex;
  align-items: flex-start;
  justify-content: space-between; /* 左右自动分开 */
  flex-wrap: wrap;               /* 小屏幕自动换行 */
  gap: 30px;
  margin-top: 40px;
  width: 100%;
}
.footer-wrap-div p a{ color:#fff; }
.footer-wrap-div p a:hover{text-decoration: underline;}
.footer-wrap-div h4{margin-bottom:20px;}
/* 前两个快速入口 + 关于我们：固定250px 靠左 */
.footer-wrap-div > div:nth-child(1),
.footer-wrap-div > div:nth-child(2) {
  width: 250px;
  flex-shrink: 0; /* 不被压缩变形 */
}

/* 第三个关注我们：固定440px 靠右 */
.footer-wrap-div > div:nth-child(3) {
  width: 440px;
  flex-shrink: 0;
  margin-left: auto; /* 关键：强制靠右 */
}
.qrcode-group {
  display: flex;
  gap: 20px;
}
.qrcode-item {
  text-align: center;
}
.qrcode-item img {
  display: block;
  margin: 0 auto 8px;
  width: 80px;
  height: 80px;
}
.qrcode-text {
  font-size: 14px;
  color: #fff;
  margin: 0;
  line-height: 1.4;
}

.footer-wrap {
}
.link_list{display: flex;}
.link_list h4{width: 100px;flex: none;font-size: 16px; color: #fff;font-weight: bold;}
.link_list p a{color: #fff;}
.link_list p a:hover{text-decoration: underline;}
.footer-bottom {
  text-align: center;
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 14px;
}
.qrcode-group {
  display: flex;
  gap: 20px;
  justify-content: center;
}
.qrcode-group img {
  width: 100px;
  height: 100px;
}

/* 移动端适配：平板+手机 一排2个 */
@media (max-width: 1080px) {
  
}

.lingyu_list{width: 100%;display: flex;margin-top: 40px;gap: 40px;}
.lingyu_main{aspect-ratio: 16 / 14; position: relative;top: 0;left: 0;}
.txt{
   background-color: #eaeff5;
  padding: 20px;
  transition: all .3s;
  height: 129px;
  position: absolute;
  bottom: 0;
  left: 0px;
  right: 0px;
}
.txt h2{text-align: left;color: #403e3e;font-size: 24px;}
.txt p{text-align: left;font-size: 12px; color: #656565;}

.lingyu_p .txt h3 {
  font-size: 16px;
  font-weight: bold;
  height: 48px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.lingyu_p  .txt p {
  margin-top: 20px;
  color: #8a8f99;
  font-size: 13px;
}
.lingyu_p  .txt::after {
  position: absolute;
  display: inline-block;
  bottom: 0;
  left: 0;
  height: 2px;
  z-index: 1;
  width: 10px;
  background-color: #f6f5f3;
  content: "";
  transition: all .3s;
}
.lingyu_main:hover .txt {
  height: 149px;
  background-color: #0551a8;
  color: #fff;
}
.lingyu_main:hover .txt a {
  color: #fff;
}
.lingyu_main:hover .txt p {
  color: #fff;
}
.lingyu_main:hover .txt::after {
  right: 0;
  width: 100%;
  background-color: #006fdb;
}



.img-scale {
  overflow: hidden; /* 关键：让图片放大不超出盒子 */
}
.img-div img {
  transition: transform 0.4s ease; /* 放大动画速度 */
}
.img-div:hover img {
  transform: scale(1.1); /* 1.1 = 放大10%，可自己改 */
}


/* 右侧悬浮工具栏 */
.right-float-bar {
  position: fixed;
  right: 20px;
  top: 250px;
  transform: translateY(-50%);
  z-index: 999;
  width:70px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 3px 15px rgba(0,0,0,0.15);
}

/* 单个按钮 */
.float-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 5px;
  color: #333;
  text-decoration: none;
  font-size: 12px;
  transition: all 0.3s ease;
  border-bottom: 1px solid #f5f5f5;
}
.float-item:last-child {
  border-bottom: none;
}

/* 悬浮变色 */
.float-item:hover {
  background: #0082f2;
  color: #fff;
}

/* 图标基础样式 */
.float-item .icon {
  width: 30px;
  height: 30px;
  margin-bottom: 6px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

/* 购物车图标 */
.cart {
  background-image: url("../images/icon6.png");
}
/* 企业微信图标 */
.work-wechat {
  background-image: url("../images/icon5.png");
}
/* 微信图标 */
.wechat {
  background-image: url("../images/icon4.png");
}


.float-item:hover .cart {
  background-image: url("../images/icon6_h.png");
}
/* 企业微信图标 */
.float-item:hover .work-wechat {
  background-image: url("../images/icon5_h.png");
}
/* 微信图标 */
.float-item:hover .wechat {
  background-image: url("../images/icon4_h.png");
}
/* -------- 企业微信 悬浮框 -------- */
.work-qrcode {
  position: absolute;
  right: 80px;
  top: 40%;
  transform: translateY(-50%);
  width: 140px;
  background: #fff;
  padding: 10px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.15);
  display: none;
  text-align: center;
}
.work-qrcode img {
  width: 120px;
  height: 120px;
  margin: 0 auto;
}
.work-qrcode p {
  font-size: 12px;
  color: #666;
  margin: 5px 0 0;
}
.work-hover:hover .work-qrcode {
  display: block;
}
/* 微信二维码悬浮 */
.wechat-hover {
  position: relative;
}
.wechat-qrcode {
  position: absolute;
  right: 80px;
  top: 40%;
  transform: translateY(-50%);
  width: 140px;
  background: #fff;
  padding: 10px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.15);
  display: none;
  text-align: center;
}
.wechat-qrcode img {
  width: 120px;
  height: 120px;
  margin: 0 auto;
}
.wechat-qrcode p {
  font-size: 12px;
  color: #666;
  margin: 5px 0 0;
}
.wechat-hover:hover .wechat-qrcode {
  display: block;
}

/* 手机端适配：底部横条显示 */
@media (max-width: 768px) {
  .right-float-bar {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    transform: none;
    display: flex;
    border-radius: 0;
  }
  .float-item {
    flex: 1;
    border-bottom: none;
    border-right: 1px solid #f5f5f5;
  }
  .float-item:last-child {
    border-right: none;
  }
  .wechat-qrcode {
    display: none !important;
  }
}



/* 搜索下拉框 */
.search-dropdown {
  position: absolute;
  top: 100%;
  right: 110px;
  width: 300px;
  padding: 15px;
  background: #fff;
  box-shadow: 0 3px 15px rgba(0,0,0,0.15);
  border-radius: 8px;
  z-index: 999;
  display: none;
}
.search-dropdown.show {
  display: block;
  animation: slideDown 0.3s ease;
}
.search-dropdown input {
  width: 100%;
  height: 40px;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0 12px;
  outline: none;
}
.search-dropdown input:focus {
  border-color: #095eb5;
}
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 让父级相对定位，不然搜索框位置会乱跑 */
.header-right {
  position: relative;
  display: inline-block;
  width: 300px;
  display: flex;
}
.header-right .span2{flex: 1}
.header-right .span2 img{width: 100%;display: block;}
.header-right .tel{position:relative;top: -1px;}
.header-right .ccidlogo{position: relative;top: -10px;}
/* 点击手型 */
.span1 {
  cursor: pointer;
}
/* 服务卡片六边形 自适应 */
@media (max-width: 1024px) {
  .service-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    height: auto;
  }
  .service-card {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    margin: 0;
  }
  .service-wrap-div { height: auto !important; }
}


/* ==============================================
   滚动进入视口时的上移动画
================================================= */
.reveal-block {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal-block.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* PC端悬浮显示下拉 */
@media (min-width: 1025px) {
  .nav > li:hover .research-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* 下拉菜单内部结构 */
.research-dropdown-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* 二级栏目区域 */
.research-level2 {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 1px solid #eee;
  padding-bottom: 15px;
  grid-template-columns: repeat(6, 1fr);
}

.research-level2-item {
  font-size: 14px;
  font-weight: normal;
  color: #333;
  cursor: pointer;
  padding: 10px 20px;
  border-radius: 4px;
  transition: all 0.2s ease;
  text-align: center;
  white-space: nowrap;
}
.research-level2-item a{
color: #333;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: 0.2s;
     display: black; 
    align-items: center;
    /* gap: 6px; */
    font-weight: normal;
    line-height: 20px;
}

.research-level2-item:hover,
.research-level2-item.active {
  color: #0052cc;
  background: #f0f5ff;
}

/* 三级栏目区域 */
.research-level3 {
  min-height: 100px;
  padding: 15px 0;
}

.research-level3-panel {
  display: none;
  flex-wrap: wrap;
  gap: 15px 30px;
}

.research-level3-panel.active {
  display: flex;
}

.research-level3-item {
  font-size: 14px;
  color: #666;
  padding: 8px 16px;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.research-level3-item:hover {
  border-color: #0052cc;
  color: #0052cc;
  background: #f0f5ff;
}

/* ==============================================
   【基础响应式容器】所有设备通用，最大宽度 1920px
================================================= */
.container {
  margin: 0 auto;
  padding: 0 0%;
  width: 1600px;
  max-width: 1600px;
}
.mb_img_p h2 a{font-size: 22px;line-height: 1.1}

/* ==============================================
   【PC 端小分辨率适配】1700px
================================================= */
@media (max-width: 1700px) {
  .container { max-width: 98%;padding:0 1%}
  .service-wrap{padding:0;}
  .nav{margin-left: 20px;gap: 8px}
  .nav > li{padding:10px 4px;}
  .nav a { font-size: 18px; }
  .header-right{font-size: 16px;}
  .header-right .span1{font-size: 16px;}
  .banner h1 { font-size: 40px; }
  .banner p { font-size: 22px; }
  .module-title h2 { font-size: 32px; }
  .news-item a{font-size: 18px;}
  .news-item .time{font-size: 16px;margin-top: 2px;}
  .news-item{padding:10px 0;}
  .plist1-item{padding:15px 0;}
  .logo{width: 400px;}
  .plist1{gap: 20px;}
  .plist1_tittle a{font-size: 22px;}
  .plist1_p{margin-top: 10px;font-size: 14px;line-height: 1.9;display: -webkit-box;-webkit-line-clamp: 4; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical;overflow: hidden;text-overflow: ellipsis;}
  .plist1-item a{font-size: 18px;}
  .project-card h2{line-height: 1}
  .project-card h2 a{font-size: 18px;line-height: 1.5;}
  .project-card h3{margin-top: 20px;}
  .project-card h3 a{font-size: 16px;}
  .project-card h4{margin-top: 15px;}
  .project-card h4 a{height: 30px;line-height: 30px;width: 90px;}
  .advantage-banner{padding:0;}
  .ccid-kouhao .span2{font-size: 18px;}
  .ccid-jj{top: 60px;}
  .ccid-jj p{font-size: 14px;line-height: 2;display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;}
  .list_rz span a{font-size: 16px;}
  .list_rz span b{margin-right: 5px;font-size: 14px}
  .list_rz{margin-top: 10px;}
  .mb1{padding-bottom: 40px;}
  .mb_img_p h2 a{font-size: 18px;}
  .mb_img_p p{display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;line-height: 1.8;font-size: 14px;}
  .report-card h2{height: 75px;background-size: 75px;line-height: 75px; font-size: 20px;}
  .icon1{padding-left: 85px !important}
  .more2{margin-top: 25px;}
   .ccid-kouhao{width: 750px;}
   .plist1_p{margin-top: 10px;}
   .plist1-list{margin-top: 60px;}
}
/* ==============================================
   【PC 端小分辨率适配】1600px
================================================= */
@media (max-width: 1600px) {
.plist1_tittle a{font-size: 20px;}
  .ccid-kouhao .span2{font-size: 18px;}
  .ccid-jj{top: 60px;}
  .ccid-jj p{font-size: 14px;line-height: 2;display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;}
  .list_rz span a{font-size: 16px;}
  .list_rz span b{margin-right: 5px;font-size: 14px}
  .list_rz{margin-top: 10px;}
  .mb1{padding-bottom: 40px;}
  .mb_img_p h2 a{font-size: 18px;}
  .mb_img_p p{display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;line-height: 1.8;font-size: 14px;}
  .report-card h2{height: 60px;background-size: 60px;line-height: 60px; font-size: 18px;}
  .icon1{padding-left: 65px !important}
  .icon2{padding-left: 60px !important}
  .more2{margin-top: 25px;}
   .ccid-kouhao{width: 750px;}
   .plist1_p{margin-top: 10px;}
}
/* ==============================================
   【PC 端小分辨率适配】1500px
================================================= */
@media (max-width: 1500px) {

  .ccid-kouhao .span2{font-size: 18px;}
  .ccid-jj{top: 50px;}
  .ccid-jj p{font-size: 14px;line-height: 2;display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;}
  .list_rz span a{font-size: 16px;}
  .list_rz span b{margin-right: 5px;font-size: 14px}
  .list_rz{margin-top: 10px;}
  .mb1{padding-bottom: 40px;}
  .mb_img_p h2 a{font-size: 18px;}
  .mb_img_p p{display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;line-height: 1.8;font-size: 14px;}
  .report-card h2{height: 60px;background-size: 60px;line-height: 60px; font-size: 18px;}
  .icon1{padding-left: 65px !important}
  .icon2{padding-left: 60px !important}
  .more2{margin-top: 25px;}
   .ccid-kouhao{width: 750px;}
   .plist1_p{margin-top: 10px;}
   .header-right {width: 260px;}
  .logo{width: 350px;}
  .header{padding:0px 0;}
  .nav{gap: 8px 8px}
  .nav > li{padding: 10px 4px;}
  .search_div .icon-sousuo{margin-left: 15px}
}

/* ==============================================
   【PC 端小分辨率适配】1400px
================================================= */
@media (max-width: 1400px) {
  .logo{width: 300px;}
  .list_rz{margin-top: 10px;}
  .mb1{padding-bottom: 40px;}
  .mb_img_p h2 a{font-size: 18px;}
  .mb_img_p p{display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;line-height: 1.8;font-size: 12px;}
  .report-card h2{height: 60px;background-size: 60px;line-height: 60px; font-size: 18px;}
  .icon1{padding-left: 65px !important}
  .icon2{padding-left: 60px !important}
  .more2{margin-top: 15px;}
   .ccid-kouhao{width: 750px;}
   .plist1_p{margin-top: 10px;}
   .plist1_tittle a{font-size: 18px;}
   .news-item a{font-size: 16px;}
  .news-item .time{font-size: 16px;margin-top: 2px;}
  .news-item{padding:5px 0;}
  .plist1-item a{font-size: 16px;}
  .plist1-item{padding:10px 0;}
   .plist1_p{margin-top: 10px;font-size: 14px;line-height: 1.7;display: -webkit-box;-webkit-line-clamp: 4; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical;overflow: hidden;text-overflow: ellipsis;}

   .logo1600{display: none}
   .logo1200{display: block}
      .header-right {width: 260px;}
  .logo{width: 150px;}
  .header{padding:10px 0;}
    .nav{gap: 8px 10px}
}

/* ==============================================
   【PC 端小分辨率适配】1300px
================================================= */
@media (max-width: 1300px) {
  .container { max-width: 98%;padding:0 }
  .nav > li{padding:10px 5px;}
  .more2{margin-top: 20px;}
  .ccid-jj{top: 40px;}
  .ccid-jj p{font-size: 12px;line-height: 2;display: -webkit-box;-webkit-line-clamp: 5; /* 这里改数字 = 显示几行 */-webkit-box-orient: vertical; overflow: hidden;text-overflow: ellipsis;}
  .ccid-kouhao{width: 700px;}
  .report-card h2{height: 50px;background-size: 50px;line-height: 50px; font-size: 18px;}
  .icon1{padding-left: 60px !important}
  .icon2{padding-left: 60px !important}
}

/* ==============================================
   【PC 端小分辨率适配】1200px
================================================= */
@media (max-width: 1200px) {
 .logo{width: 150px;}
 .nav a{font-size: 16px;}
 .header-right{font-size: 16px !important;}
 .header-right .span2,.header-right .span1{margin-left: 5px;}
 .project-card h3{margin-top: 10px;}
 .news-list{gap: 10px 100px;}
 .txt h2{font-size: 20px;}
 .txt{height: 100px;}
 .lingyu_main:hover .txt {height: 120px;}
 .customer-logo .item{width: 20%}
}


/* ==============================================
   【PC 端专属样式】1025px 以上
================================================= */
@media (min-width: 1025px) {
  /* PC 端隐藏箭头 */
  .has-submenu > a::after {
    display: none !important;
  }
  /* PC 端悬浮显示下拉 */
  .nav li:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ==============================================
   【移动端专属样式】1024px 以下
================================================= */
@media (max-width: 1024px) {
  #mainNav .active .submenu{position: static;display: block !important; opacity: 1;visibility: initial;}
  /* 移动端显示箭头 */
  .has-submenu > a::after {
    content: "→";
    font-size: 12px;
    color: #666;
    transition: transform 0.2s;
    margin-left: auto;
  }
  .has-submenu.active > a::after {
    content: "↓";
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 70px 25px 30px;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 99;
  }
  .nav.show {
    transform: translateX(0);
  }
  .nav > li {
    width: 100%;
    padding: 0;
    border-bottom: 1px solid #f0f0f0;
  }
  .nav a {
    display: flex;
    justify-content: space-between;
    padding: 0px 0;
    
    color: #333;
  }

  .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding: 0 0 10px 12px;
    display: none;
  }
  .submenu li a {
    padding: 10px 0;
    font-size: 15px;
    color: #666;
  }

  .mobile-menu-btn {
    display: block;
  }
  .logo {
    font-size: 20px;
    padding-right: 50px;
  }
}

/* PC端二级菜单 */
.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 180px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.2s;
}
.submenu li a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: #555;
  line-height: 2;
}
.submenu li a:hover {
  background: #f5f7fa;
  color: #0052cc;
}
/* 研究领域多级下拉菜单样式 */
.research-dropdown {
  position: fixed;
  top: 98px;
  left: 0;
  width: 100vw;
  background: #fff;
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #0052cc;
  font-size: 38px;
  cursor: pointer;
  padding: 5px;
  position: absolute;
  right: 0px;
  top: 45%;
  transform: translateY(-50%);
  z-index: 100;
  transition: opacity 0.3s;
}
.mobile-menu-btn.hide {
  opacity: 0;
  pointer-events: none;
}

/* 移动端关闭按钮 */
.mobile-close-btn {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  color: #333;
  cursor: pointer;
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 101;
}
.mobile-close-btn.show {
  display: block;
}

/* 移动端遮罩层 */
.mobile-mask {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 98;
}
.mobile-mask.show {
  display: block;
}



.level2-scroll {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        scroll-behavior: smooth;
        cursor: grab;
        padding: 0 10px;
      }
      .level2-scroll:active {
        cursor: grabbing;
      }
      /* 隐藏原生滚动条 */
      .level2-scroll::-webkit-scrollbar {
        display: none;
      }
      .menu-level2 {
        flex: 0 0 auto;
        white-space: nowrap;
        padding: 8px 15px;
      }
      /* PC端显示左右箭头 */
      .scroll-arrow {
        display: flex !important;
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        background: rgba(255,255,255,0.8);
        border-radius: 50%;
        justify-content: center;
        align-items: center;
        cursor: pointer;
        box-shadow: 0 0 3px rgba(0,0,0.1);
        z-index: 10;
        font-size: 12px;
        color: #666;
      }
      .scroll-arrow.left { left: 2px; }
      .scroll-arrow.right { right: 2px; }
      .level2-scroll-wrap {
        position: relative;
      }



/* 右侧热线信息 */
.header-right {
  font-size: 16px;
  color: #666;

}
.header-right .span2 b{font-size: 20px}
.header-right .span2{margin-left: 10px;font-family:"arial"}
.header-right .span1{margin-right: 10px; color: #000;font-size:  clamp(18px, 1.1vw, 26px);font-weight: bold;}
.header-right .span2 b{ background: linear-gradient(to right, #df0b0c, #2016f3); -webkit-background-clip: text;background-clip: text;color: transparent;}
@media (min-width: 1025px) {
  .header-right {}
}

/* ====================== 响应式适配 ====================== */
/* iPad 竖屏 → 一行 6 个 */
@media (max-width: 768px) {
  .right-float-bar{display: none}
  .customer-logo .item {width: 16.666%;}
   .ccid-kouhao{width: 100%;}
   .report-wrap{display: block;}
   .news-list{    grid-template-columns: repeat(1, 1fr);margin-bottom: 0;}
   .mb_list{    grid-template-columns: repeat(2, 1fr);display: grid;gap: 2%}
   .banner{display: none}
   .tab-nav span{padding:10px 5%;}
   .mb1{width: 175px;}
   .logo{width: 300px;}
   .mb_img_p h2 a{font-size: 16px; line-height: 1}
   .footer-wrap-div{display: block;}
   .mobile-menu-btn{display: block;}
   .link_list{display: block;}
   .link_list h4{display: block;width: 100%;margin-bottom: 20px;}
   .footer-wrap-div > div:nth-child(3){width: 100%;}
   .footer-wrap{padding:0 20px}
   .footer-wrap-div > div:nth-child(1){margin-bottom: 40px;}
   .banner_h5{display: block;}
   .module-title h2{font-size: 22px;text-align: left;}
   .module-title p{display: none}
   .tab-nav{margin:20px 0;gap: 10px}
   .news-item .time,.news-item a{font-size: 14px;}
   .tab-nav span{font-size: 14px;border-radius:0; flex: 1}
   .module-title{margin:15px 0;margin-top: 25px;}
   .container{width: 90%}
   .news-item a span{margin-right: 0;}
   .ccid-kouhao .span2{display: block;}
   .ccid-kouhao .span2{font-size: 14px;line-height: 24px;}
   .ccid-kouhao .span2 b{margin-right: 20px;}
   .advantage-wrap{overflow: inherit;}
   .ccid-jj{position: static;margin-top: 20px;width: 100%;}
   .list_rz{ grid-template-columns: repeat(2, 1fr);display: grid;gap: 2%;margin-top: 20px;}
   .mb_list{margin-top: 40px;}
   .ccid_pc{display: none}
   .ccid_h5{display: block;margin-top: 20px;}
   .ccid-kouhao{gap: 5px;}
   .lingyu_list{ grid-template-columns: repeat(2, 1fr);display: grid;gap: 2%;margin-top: 20px;}
    .txt{height: 70px;padding:10px;}
    .txt h2{font-size: 16px;}
    .txt p{font-size: 12px;}
 .lingyu_main:hover .txt {height: 100px;}
 .service-card .title{font-size: 18px;}
  .service-card .en{display: none}
 .service-card a{padding:5px 10px;}
 .service-card{min-height:50px;}
 .plist1_tittle a{font-size: 16px; line-height: 25px;}
 .plist1_p{-webkit-line-clamp: 3;}
 .plist1_tag{gap: 5px}
 .iconfont{font-size: 14px !important;}
 .plist1-list{margin-top: 30px;}
 .report-card{margin-bottom: 20px;width:100%;}
 .report-wrap{margin-bottom: 0;}
 .pc_list{display: none;  }
 .h5_list{display: block}
 .plist1-list{display: none}
.container .project-card:nth-child(2),.container .project-card:nth-child(3) {display: none !important;}
.list_rz{display: none}
.mb_list{display: none}
.hzhb{display: none}
.xqzx{display: none}
.qrcode-group .qrcode-item:nth-child(3) {display: none !important;}
.ewm_list{margin-top: 0px;}
.service-wrap-div{}
.h5_tel{display: block;text-align: center;padding-top: 10px}
.rk{display: none}
.about{display: none}
.link_list{display: none}
.footer{padding:15px 0;margin-top: 40px;}
.footer-wrap-div h4{margin-bottom: 10px;}
.footer-bottom{padding-top: 10px;margin-top: 10px;padding-bottom: 10px;}
.footer-wrap-div{margin-top: 0;}
.hover-text{display: none !important}
.tag_dld,.tag_txt{display: none}
.project-card{padding:20px;aspect-ratio:auto;}
.service-wrap{width: 90%;margin:0 auto;}
.advantage-banner{margin:0}
.project-grid{margin-bottom: 0}
.more3{background-size: 13px;font-size: 12px;padding-left: 17px;}
.service-grid {
    width: 100%;
    height: auto;
    display: flex;
    flex-wrap: wrap;
    gap:15px;
    justify-content: center;
    padding: 30px 0;
  }
  .service-card {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    width: calc(33% - 15px);
    height: auto;
    min-height: 50px;
    clip-path: none !important;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  }
  .hover-bg {
    display: none !important;
    clip-path: none !important;
    border-radius: 12px;
  }
  /* 移动端全部文字常态展示 */
  .service-card .hover-text {
    display: none !important;
    color: #666;
    margin-top: 10px;
    font-size: 14px;
  }
  .service-card:hover .title,
  .service-card:hover .en {
    display: block !important;
  }
  .service-card .title {
    font-size: 14px;
    margin-bottom: 8px;
  }
  .service-card .en {
    margin-bottom: 0;
  }
  .search_div{display: none}
  .header-right{display: none}
  .logo1200{display: none;}
  .logo1600{display: block;}
  .search_li{display: none}
  .nav a{line-height: 3}
  .research-dropdown-inner{max-width: 95%;margin:0 auto;padding:0;}
  .research-level2{    grid-template-columns: repeat(2, 1fr);}
  #mainNav .active .submenu{width: 100%;}
  .research-level2-item{font-weight: normal;padding:5px 10px;}
}

/* 手机大屏 → 一行 4 个 */
@media (max-width: 480px) {
  .customer-logo .item {
    width: 25%;
  }
  .customer-logo .item img {
    height: 32px; /* 手机缩小一点LOGO */
  }

}

/* 手机小屏 → 一行 3 个 */
@media (max-width: 360px) {
  .customer-logo .item {
    width: 33.333%;
  }
}