/* ============================================================
   戴帛数码科技（上海）有限公司 企业官网 通用样式
   主色调：浪潮蓝  #005BAC / #0080D1
   字体：系统无衬线字体栈，无版权风险
   ============================================================ */

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","WenQuanYi Micro Hei","Helvetica Neue",Arial,sans-serif;
  color:#333;line-height:1.7;background:#fff;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
a:hover{color:#0080D1}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 15px}

/* ---------- 颜色变量 ---------- */
:root{
  --blue:#005BAC;
  --blue-light:#0080D1;
  --blue-deep:#003A73;
  --blue-pale:#EAF4FC;
  --blue-pale2:#F3F9FE;
  --orange:#F5A623;
  --gray:#666;
  --gray-light:#999;
  --line:#E5E5E5;
  --bg:#F7FAFD;
}

/* ---------- 通用标题 ---------- */
.section{padding:70px 0;position:relative}
.section.bg-gray{background:var(--bg)}
.section.bg-blue{background:linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 60%,var(--blue-light) 100%);color:#fff}
.section.bg-pale{background:var(--blue-pale2)}
.sec-head{text-align:center;margin-bottom:45px}
.sec-head .en{font-size:14px;letter-spacing:4px;color:var(--blue-light);text-transform:uppercase;margin-bottom:6px;font-weight:600}
.sec-head h2{font-size:30px;color:var(--blue-deep);position:relative;display:inline-block;padding-bottom:14px;font-weight:700}
.sec-head h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:56px;height:3px;background:var(--blue);border-radius:2px}
.sec-head .sub{color:var(--gray);margin-top:12px;font-size:15px}
.sec-head.light h2{color:#fff}
.sec-head.light h2::after{background:#fff}
.sec-head.light .sub{color:rgba(255,255,255,.85)}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:12px 30px;border-radius:4px;font-size:15px;cursor:pointer;border:1px solid transparent;transition:all .3s;letter-spacing:1px;font-family:inherit}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-deep);color:#fff}
.btn-outline{background:transparent;border-color:#fff;color:#fff}
.btn-outline:hover{background:#fff;color:var(--blue)}
.btn-outline-blue{background:transparent;border-color:var(--blue);color:var(--blue)}
.btn-outline-blue:hover{background:var(--blue);color:#fff}

/* ========== 顶部信息条 ========== */
.top-bar{background:var(--blue-deep);color:#cfe4f5;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.top-bar a{color:#cfe4f5}
.top-bar a:hover{color:#fff}
.top-bar .tb-left i{margin-right:6px}
.top-bar .tb-left span{margin-right:20px}
.top-bar .tb-right a{margin-left:15px}

/* ========== 导航条 ========== */
.header{background:#fff;box-shadow:0 2px 18px rgba(0,0,0,.06);position:sticky;top:0;z-index:999;overflow:visible !important;}
.header .container{display:flex;align-items:center;justify-content:space-between;position:relative;overflow:visible !important;}
.logo{display:flex;align-items:center;gap:1px;padding:12px 0;text-decoration:none}
.logo .logo-img{width:70px;height:46px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;flex-shrink:0;letter-spacing:1px}
.logo-text h1{font-size:19px;color:var(--blue-deep);font-weight:700;line-height:1.2}
.logo-text p{font-size:11px;color:var(--gray-light);letter-spacing:2px;text-transform:uppercase}

.nav{display:flex;align-items:center;margin:0;padding:0;list-style:none;}
.nav>li{position:relative}
.nav>li>a{display:flex;align-items:center;gap:4px;padding:28px 16px;font-size:15px;color:#333;font-weight:500;white-space:nowrap;position:relative;}
.nav>li>a .caret{font-size:10px;transition:transform .25s;opacity:.6}
.nav>li>a:hover,.nav>li.active>a{color:var(--blue)}
.nav>li.active>a::after,
.nav>li>a::after{content:"";position:absolute;left:16px;right:16px;bottom:18px;height:2px;background:var(--blue);transform:scaleX(0);transition:transform .3s;transform-origin:center}
.nav>li>a:hover::after,.nav>li.active>a::after{transform:scaleX(1)}

/* ============================================================
   【核心修复】：多级下拉菜单鼠标划过（Hover）展现样式
   ============================================================ */

/* 一级下拉菜单 (二级列表) */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  border-radius: 4px;
  padding: 6px 0;
  margin: 0;
  list-style: none;
  z-index: 1000;
  
  /* 默认隐藏过渡属性 */
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  pointer-events: none;
}

/* 填补一二级菜单间的空白接缝，防止鼠标划过时意外消失 */
.dropdown::before {
  content: "";
  position: absolute;
  top: -15px;
  left: 0;
  right: 0;
  height: 15px;
  background: transparent;
}

/* 鼠标滑过一级菜单 li 时展示二级菜单 */
.nav > li:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown li {
  position: relative;
}

.dropdown li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  font-size: 14px;
  color: #555;
  border-bottom: 1px solid #f2f2f2;
  transition: all 0.2s ease;
}

.dropdown li:last-child a {
  border-bottom: none;
}

.dropdown li a::after {
  content: "→";
  opacity: 0;
  transform: translateX(-6px);
  transition: all 0.25s;
}

.dropdown li a:hover {
  background: var(--blue-pale);
  color: var(--blue);
  padding-left: 24px;
}

.dropdown li a:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* 二级菜单中的 mega (三级品牌型号子菜单) */
.dropdown .has-mega {
  position: relative;
}

.dropdown .mega {
  position: absolute;
  left: 100%;
  top: 0;
  min-width: 200px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  border-radius: 4px;
  padding: 6px 0;
  margin: 0;
  list-style: none;
  z-index: 1001;
  
  /* 默认隐藏 */
  opacity: 0;
  visibility: hidden;
  transform: translateX(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  pointer-events: none;
}

/* 填补二三级菜单间的左右缝隙 */
.dropdown .mega::before {
  content: "";
  position: absolute;
  left: -15px;
  top: 0;
  bottom: 0;
  width: 15px;
  background: transparent;
}

/* 鼠标滑过二级 has-mega 时自动展开三级菜单 */
.dropdown .has-mega:hover > .mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  pointer-events: auto;
}

/* 移动端菜单控制 */
.mobile-bar{display:none;font-size:26px;color:var(--blue);cursor:pointer;padding:10px}
.mobile-nav{display:none;position:fixed;top:0;right:0;width:280px;height:100%;background:#fff;z-index:1000;padding:24px 20px;box-shadow:-4px 0 20px rgba(0,0,0,.15);overflow-y:auto}
.mobile-nav.open{display:block}
.mobile-nav .mn-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid #eee}
.mobile-nav .mn-head .logo-img{width:120px;height:38px;font-size:14px}
.mobile-nav .close{font-size:24px;color:var(--blue);cursor:pointer}
.mobile-nav li{border-bottom:1px solid #eee}
.mobile-nav li>a{display:flex;align-items:center;justify-content:space-between;padding:13px 0;font-size:15px;color:#333}
.mobile-nav li>a .caret{font-size:12px;color:var(--blue-light)}
.mobile-nav li ul{padding-left:14px;display:none;background:#f8fbfe}
.mobile-nav li ul li a{padding:11px 10px;font-size:14px;color:#666}
.mobile-nav li.open>ul{display:block}
.mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:999}
.mask.open{display:block}

/* ========== Banner 轮播 ========== */
.banner{position:relative;height:560px;overflow:hidden}
.banner .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease;background-size:cover;background-position:center}
.banner .slide.active{opacity:1}
.banner .slide::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,40,80,.72) 0%,rgba(0,80,150,.45) 60%,rgba(0,90,160,.2) 100%)}
.banner .slide .content{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;width:100%;max-width:900px;padding:0 20px}
.banner .slide .tag{display:inline-block;padding:6px 18px;border:1px solid rgba(255,255,255,.6);border-radius:30px;font-size:13px;letter-spacing:3px;margin-bottom:18px}
.banner .slide h2{font-size:44px;font-weight:700;line-height:1.3;margin-bottom:16px;text-shadow:0 2px 8px rgba(0,0,0,.3)}
.banner .slide p{font-size:17px;color:rgba(255,255,255,.92);margin-bottom:26px}
.banner .dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.banner .dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:all .3s}
.banner .dots span.active{background:#fff;transform:scale(1.3)}
.banner .arrows span{position:absolute;top:50%;transform:translateY(-50%);width:50px;height:50px;background:rgba(255,255,255,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;cursor:pointer;z-index:5;transition:all .3s}
.banner .arrows span:hover{background:var(--blue)}
.banner .arrows .prev{left:20px}
.banner .arrows .next{right:20px}




/* ========== 产品卡片（一排3个） ========== */
.grid{display:grid;gap:28px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.product-card,.card{border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .35s;display:flex;flex-direction:column;height:90%}
.product-card:hover,.card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,58,115,.15)}
/* 1. 容器：设置固定宽高，超出隐藏 */
.product-card .img-box, 
.card .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;   /* 请根据实际需求修改固定宽度 */
  height: 288px;  /* 请根据实际需求修改固定高度（或保持 4:3 比例） */
}

/* 2. 占位容器样式 */
.product-card .img-box .ph,
.card .img-box .ph {
  width: 100%;
  height: 100%; /* 让占位符填满整个 img-box 容器 */
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-light);
  font-size: 13px;
  /*background: #f4faff;*/
  text-align: center;
  line-height: 1.6;
}

/* 3. 图片样式：完整显示，不裁剪 */
.product-card .img-box .ph img,
.card .img-box .ph img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* 改为 contain：等比缩放，保证图片完整显示在容器内，多余部分留白 */
}

.product-card .body,.card .body{padding:20px;flex:1;display:flex;flex-direction:column; }
.product-card .body .brand{font-size:12px;color:var(--blue);font-weight:600;letter-spacing:1px;margin-bottom:6px}
.product-card .body h4,.card .body h4{font-size:18px;color:var(--blue-deep);margin-bottom:8px;line-height:1.4}
.product-card .body p,.card .body p{font-size:14px;color:var(--gray);margin-bottom:14px;flex:1}
.product-card .more,.card .more{color:var(--blue);font-size:13px;font-weight:600;align-self:flex-start}
.product-card .more i,.card .more i{margin-left:4px;transition:transform .3s}
.product-card:hover .more i,.card:hover .more i{transform:translateX(4px)}


/*业务领域*/
.card_yw {
  border-radius: 8px;
  overflow: hidden; /* 关键：超出容器的部分会被隐藏，确保放大时不会溢出卡片圆角 */
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .06);
  transition: all .35s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card_yw:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 58, 115, .15);
}
.card_yw .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 232px;
}

/* 确保 .ph 容器也占满整个 .img-box */
.card_yw .img-box .ph {
  width: 100%;
  height: 100%;
  display: block;
}

.card_yw .img-box .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 强制图片铺满容器，多余部分裁剪 */
  display: block;    /* 消除图片默认的底部空白间隙 */
  transition: transform 0.6s ease;
}

/* 鼠标滑过卡片时，图片慢慢放大 */
.card_yw:hover .img-box .ph img {
  transform: scale(1.1);
}

.card_yw .body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card_yw .body h4 {
  font-size: 18px;
  color: var(--blue-deep);
  margin-bottom: 8px;
  line-height: 1.4;
  /* 限制标题最多显示 2 行，保持整齐 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_yw .body p {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 14px;
  flex: 1;
  /* 限制描述文字最多显示 3 行 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_yw .more {
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
  margin-top: auto;
}

.card_yw .more i {
  margin-left: 4px;
  transition: transform .3s;
}

.card_yw:hover .more i {
  transform: translateX(4px);
}


/*解决方案*/
.card_solution {
  border-radius: 8px;
  overflow: hidden; /* 关键：超出容器的部分会被隐藏，确保放大时不会溢出卡片圆角 */
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .06);
  transition: all .35s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card_solution:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 58, 115, .15);
}
.card_solution .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 358px;
}

/* 确保 .ph 容器也占满整个 .img-box */
.card_solution .img-box .ph {
  width: 100%;
  height: 100%;
  display: block;
}

.card_solution .img-box .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 强制图片铺满容器，多余部分裁剪 */
  display: block;    /* 消除图片默认的底部空白间隙 */
  transition: transform 0.6s ease;
}

/* 鼠标滑过卡片时，图片慢慢放大 */
.card_solution:hover .img-box .ph img {
  transform: scale(1.1);
}

.card_solution .body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card_solution .body h4 {
  font-size: 18px;
  color: var(--blue-deep);
  margin-bottom: 8px;
  line-height: 1.4;
  /* 限制标题最多显示 2 行，保持整齐 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_solution .body p {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 14px;
  flex: 1;
  /* 限制描述文字最多显示 3 行 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_solution .more {
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
  margin-top: auto;
}

.card_solution .more i {
  margin-left: 4px;
  transition: transform .3s;
}

.card_solution:hover .more i {
  transform: translateX(4px);
}

/*技术服务*/

/*解决方案*/
.card_solution2 {
  border-radius: 8px;
  overflow: hidden; /* 关键：超出容器的部分会被隐藏，确保放大时不会溢出卡片圆角 */
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .06);
  transition: all .35s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card_solution2:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 58, 115, .15);
}
.card_solution2 .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 488px;
}

/* 确保 .ph 容器也占满整个 .img-box */
.card_solution2 .img-box .ph {
  width: 100%;
  height: 100%;
  display: block;
}

.card_solution2 .img-box .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 强制图片铺满容器，多余部分裁剪 */
  display: block;    /* 消除图片默认的底部空白间隙 */
  transition: transform 0.6s ease;
}

/* 鼠标滑过卡片时，图片慢慢放大 */
.card_solution2:hover .img-box .ph img {
  transform: scale(1.1);
}

.card_solution2 .body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card_solution2 .body h4 {
  font-size: 18px;
  color: var(--blue-deep);
  margin-bottom: 8px;
  line-height: 1.4;
  /* 限制标题最多显示 2 行，保持整齐 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_solution2 .body p {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 14px;
  flex: 1;
  /* 限制描述文字最多显示 3 行 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_solution2 .more {
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
  margin-top: auto;
}

.card_solution2 .more i {
  margin-left: 4px;
  transition: transform .3s;
}

.card_solution2:hover .more i {
  transform: translateX(4px);
}

/*新闻动态*/

.card_news {
  border-radius: 8px;
  overflow: hidden; /* 关键：超出容器的部分会被隐藏，确保放大时不会溢出卡片圆角 */
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .06);
  transition: all .35s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card_news:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 58, 115, .15);
}
.card_news .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 232px;
}

/* 确保 .ph 容器也占满整个 .img-box */
.card_news .img-box .ph {
  width: 100%;
  height: 100%;
  display: block;
}

.card_news .img-box .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* 强制图片铺满容器，多余部分裁剪 */
  display: block;    /* 消除图片默认的底部空白间隙 */
  transition: transform 0.6s ease;
}

/* 鼠标滑过卡片时，图片慢慢放大 */
.card_news:hover .img-box .ph img {
  transform: scale(1.1);
}

.card_news .body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card_news .body h4 {
  font-size: 18px;
  color: var(--blue-deep);
  margin-bottom: 8px;
  line-height: 1.4;
  /* 限制标题最多显示 2 行，保持整齐 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_news .body p {
  font-size: 14px;
  color: var(--gray);
  margin-bottom: 14px;
  flex: 1;
  /* 限制描述文字最多显示 3 行 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card_news .more {
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
  margin-top: auto;
}

.card_news .more i {
  margin-left: 4px;
  transition: transform .3s;
}

.card_news:hover .more i {
  transform: translateX(4px);
}



/* 详情页大图 */
.prod-gallery .main-img{width:100%;aspect-ratio:4/3;border-radius:8px;margin-bottom:14px}
.prod-gallery .thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.prod-gallery .thumbs .ph{aspect-ratio:1/1;font-size:11px}
.prod-thumb{aspect-ratio:1/1;border-radius:6px;overflow:hidden;border:2px solid transparent;cursor:pointer;transition:border-color .25s}
.prod-thumb.active{border-color:var(--blue)}
.prod-thumb .ph{width:100%;height:100%;font-size:11px}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table th{width:120px;background:var(--blue-pale);color:var(--blue-deep);padding:12px 16px;text-align:left;font-weight:600;border:1px solid #dcebf8;vertical-align:top}
.spec-table td{padding:12px 16px;border:1px solid #eee;color:#555}

/* 筛选标签 */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;align-items:center}
.filter-bar .lab{font-size:14px;color:var(--gray);margin-right:4px}
.chip{padding:7px 18px;border:1px solid var(--line);border-radius:30px;font-size:14px;color:#666;cursor:pointer;transition:all .25s;background:#fff}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.active{background:var(--blue);border-color:var(--blue);color:#fff}

/* ========== 数字统计 ========== */
.stats{padding:50px 0;background:var(--blue-deep);color:#fff}
.stats .grid{text-align:center}
.stat .num{font-size:42px;font-weight:700;color:#fff}
.stat .num em{font-style:normal;color:#7fc4ff}
.stat p{font-size:15px;color:#bcd9f0;margin-top:4px}

/* ========== 页脚 ========== */
.footer{background:#0b2540;color:#9db4c8;padding:55px 0 0}
.footer .f-top .grid{margin-bottom:35px}
.footer h5{color:#fff;font-size:17px;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer h5::after{content:"";position:absolute;left:0;bottom:0;width:36px;height:2px;background:var(--blue-light)}
.footer ul li{padding:6px 0;font-size:14px}
.footer ul li a:hover{color:#fff;padding-left:4px}
.footer .f-about p{font-size:14px;line-height:1.9}
.footer .contact-line{font-size:14px;margin-bottom:10px;display:flex;gap:8px;align-items:flex-start}
.footer .contact-line i{color:var(--blue-light);flex-shrink:0;width:16px;margin-top:4px}

/* 页脚二维码 */
.qrcode-wrap{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:16px;text-align:center;margin-top:6px}
.qrcode-wrap .qr-img{width:110px;height:110px;margin:0 auto 10px;background:var(--blue-pale);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--blue-light);font-size:12px}
.qrcode-wrap p{font-size:13px;color:#bcd9f0;line-height:1.6}
.footer-bottom{background:#071a2c;border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:13px;color:#6d8499}
.footer-bottom .links a{color:#6d8499;margin:0 8px}
.footer-bottom .links a:hover{color:#fff}
.footer-bottom .copy{margin-top:6px}
.footer-bottom .copy a{color:#6d8499}
.footer-bottom .copy a:hover{color:#fff}

/* ========== 面包屑 / 内页通用 ========== */
.page-banner{position:relative;height:260px;display:flex;align-items:center;justify-content:center;color:#fff;text-align:center;background-size:cover;background-position:center}
.page-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,58,115,.85),rgba(0,128,209,.6))}
.page-banner .pb-content{position:relative;z-index:2}
.page-banner h1{font-size:34px;font-weight:700;margin-bottom:8px}
.page-banner p{font-size:15px;color:rgba(255,255,255,.9);letter-spacing:2px}
.crumb{background:#fff;border-bottom:1px solid var(--line);padding:12px 0;font-size:13px;color:var(--gray)}
.crumb a:hover{color:var(--blue)}
.crumb span{color:var(--blue)}

/* ========== 侧边栏布局 ========== */
.layout{display:grid;grid-template-columns:260px 1fr;gap:40px;padding:50px 0}
.sidebar .side-nav{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.05)}
.sidebar .side-nav .tt{background:var(--blue);color:#fff;padding:18px 22px;font-size:18px;font-weight:700;letter-spacing:1px}
.sidebar .side-nav li a{display:block;padding:15px 22px;font-size:15px;color:#555;border-bottom:1px solid #f2f2f2;position:relative;transition:all .25s}
.sidebar .side-nav li a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--blue);transform:scaleY(0);transition:transform .25s}
.sidebar .side-nav li a:hover,.sidebar .side-nav li.active a{background:var(--blue-pale);color:var(--blue);padding-left:30px}
.sidebar .side-nav li a:hover::before,.sidebar .side-nav li.active a::before{transform:scaleY(1)}
.side-contact{background:linear-gradient(135deg,var(--blue),var(--blue-light));border-radius:8px;padding:24px;color:#fff;margin-top:24px}
.side-contact h5{font-size:17px;margin-bottom:14px}
.side-contact p{font-size:13.5px;margin-bottom:8px;line-height:1.8}
.side-contact p i{margin-right:8px}
.main{min-width:0}
.main .page-title{font-size:24px;color:var(--blue-deep);padding-bottom:14px;border-bottom:2px solid var(--blue-pale);margin-bottom:28px}
.main .page-title span{color:var(--blue-light);font-size:13px;display:block;letter-spacing:2px;margin-top:4px;font-weight:400}

/* ========== 占位图通用 ========== */
/*.ph-box{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue-pale),#dcecf8);color:var(--blue);font-size:13px;letter-spacing:1px;text-align:center;line-height:1.6}*/

.ph-box {
  display: flex;
  align-items: center;
  justify-content: center;
  /*background: linear-gradient(135deg,var(--blue-pale),#dcecf8);*/
  color: var(--blue);
  font-size: 13px;
  letter-spacing: 1px;
  text-align: center;
  line-height: 1.6;
}
/* 里面图片样式 */
.ph-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}


/* ========== 表格 ========== */
table.data{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border-radius:6px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.05)}
table.data th{background:var(--blue);color:#fff;padding:14px;text-align:left;font-weight:600}
table.data td{padding:13px 14px;border-bottom:1px solid #eee;color:#555}
table.data tr:nth-child(even) td{background:#f8fcff}
table.data tr:hover td{background:var(--blue-pale2)}

/* ========== 时间线 ========== */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline .item{position:relative;padding-bottom:26px}
.timeline .item::before{content:"";position:absolute;left:-27px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--blue);border:3px solid #fff;box-shadow:0 0 0 2px var(--blue)}
.timeline .item .yr{font-size:13px;color:var(--blue);font-weight:600}
.timeline .item .tx{font-size:15px;color:#444}

/* ========== 分页 ========== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;flex-wrap:wrap}
.pagination a{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border:1px solid var(--line);border-radius:4px;color:#666;font-size:14px}
.pagination a.active,.pagination a:hover{background:var(--blue);border-color:var(--blue);color:#fff}

/* ========== 回到顶部 ========== */
.to-top{display:none;position:fixed;right:24px;bottom:30px;width:44px;height:44px;background:var(--blue);color:#fff;border-radius:50%;align-items:center;justify-content:center;cursor:pointer;z-index:99;box-shadow:0 4px 12px rgba(0,0,0,.2);font-size:20px}

/* ========== 响应式断点 ========== */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .nav>li>a{padding:28px 11px;font-size:14px}
  .banner{height:440px}
  .banner .slide h2{font-size:32px}
}
@media(max-width:768px){
  .top-bar{font-size:12px}
  .top-bar .tb-left span{margin-right:10px}
  .nav,.top-bar .tb-right{display:none}
  .mobile-bar{display:block}
  .banner{height:360px}
  .banner .slide h2{font-size:24px}
  .banner .slide p{font-size:14px}
  .banner .slide .content{padding:0 15px}
  .section{padding:48px 0}
  .sec-head h2{font-size:24px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .stats .grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat .num{font-size:30px}
  .layout{grid-template-columns:1fr;padding:30px 0}
  .sidebar{order:2}
  .page-banner{height:180px}
  .page-banner h1{font-size:24px}
  .logo-text h1{font-size:16px}
  .footer .grid,.footer .f-top .grid{grid-template-columns:1fr}
  .footer .f-qrcode{margin-top:20px}
  
  
.card_solution2 .img-box .ph img {
  max-width: 100%;
  height: auto;
  object-fit: cover; /* 强制图片铺满容器，多余部分裁剪 */
  display: block;    /* 消除图片默认的底部空白间隙 */
  transition: transform 0.6s ease;
}

.card_solution2 .img-box {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 288px;
}

}
@media(max-width:480px){
  .banner .arrows span{display:none}
  .stats .grid{grid-template-columns:1fr 1fr}
}

/* 移动端下级菜单默认隐藏，带有 .open 时展开 */
.mobile-nav li ul {
  padding-left: 14px;
  display: none;
  background: #f8fbfe;
}
.mobile-nav li.open > ul {
  display: block;
}