/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "思源雅黑", sans-serif;
}
html, body {
    overflow-x: hidden !important;
    width: 100% !important;
    position: relative !important;
    background-image:url(bsdlsbj.png);
}

.body1 {
    overflow-x: hidden; /* 防止水平滚动条 */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}
.max-width-center {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 15px;
}
.table-wrap {
    max-width: 100%;
    overflow-x: auto;
}
.structure-card {
    max-width: 100%;
}
.structure-img img {
    max-width: 100%;
    height: auto;
}
.container {
    margin: 20px auto;
    padding: 20px;
}
.btn {
    background: linear-gradient(to bottom, #295FAB, #295FAB);
    color: #fff;
    border: none;
    padding: 5px 15px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.3s;
}
.btn:hover {
    background: linear-gradient(to bottom, #1e5dd6, #295FAB);
    color: #fff;
}

/* 头部产品介绍 */
.product-header {
    padding: 20px 0;
    text-align: center;
    background-color: #EEEEEE;
}
.header-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.header-title .title-right {
    color: #295FAB;
    display: flex;
    align-items: center;
    gap: 5px;
}
.product-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    padding-top: 10px;
}
.product-card {
    width: 400px;
    padding: 15px;
    border-bottom: 4px solid #295FAB;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.product-card h3 {
    color: #295FAB;
    margin-bottom: 10px;
    font-size: 24px;
}
.product-card p {
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 15px;
}

/* 分类导航表格 */
.category-nav {
    padding: 20px 0;
}
.nav-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.nav-title .title-left {
    color: #295FAB;
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 10px;
}
.nav-subtitle {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
}
.table-wrap {
    overflow-x: auto;
    padding: 15px;
    /*border-radius: 5px;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
    background-color: #fff;*/
}
.table-desc {
    color: #295FAB;
    margin-bottom: 10px;
    font-weight: bold;
}
.product-table {
    border-collapse: collapse;
    width: 100%;
}
.product-table td {
    border: 1px solid #000; /* 蓝色边框 */
    padding: 8px;
    text-align: center;
    font-size: 14px;
}
/* 表头行样式 */
.product-table .header-row {
    background-color: #295FAB !important; /* 蓝色背景 */
    font-weight: bold;
    color:#fff;
    font-size: 20px;
}

/* 四色循环斑马纹样式：深灰、白、浅灰、白 */
.product-table tr:nth-child(4n+2) {
    background-color: #B0B0B0; /* 深灰色 */
}
.product-table tr:nth-child(4n+3) {
    background-color: #ffffff; /* 白色 */
}
.product-table tr:nth-child(4n+4) {
    background-color: #E6E6E6; /* 浅灰色 */
}
.product-table tr:nth-child(4n+5) {
    background-color: #ffffff; /* 白色 */
}

/* 产品结构 */
.product-structure {
    padding: 20px 0;
}
.structure-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.structure-title .title-left {
    color: #295FAB;
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 10px;
}
.structure-subtitle {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
}
.structure-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    /*background-color: #fff;
    border-radius: 5px;*/
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}
.structure-img img {
    max-width: 100%;
    height: auto;
}

/* 采购流程 */
.purchase-process {
    color: #fff;
    text-align: center;
    border-radius: 5px;
    margin: 20px 0;
}
.purchase-process .yzscgbj {
    background-image: url('yzscgbj.png');
    padding: 50px 20px;
    width: 100%; /* 使用100%替代100vw，避免超出屏幕 */
    max-width: 100%; /* 确保不会超出父容器 */
    box-sizing: border-box; /* 包含padding在宽度内 */
    margin: 0 auto; /* 居中显示 */
}
.purchase-process .yzscgbj img {
    margin-top: 20px;
}
.process-title {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 10px;
}
.process-subtitle {
    margin-bottom: 30px;
}
.process-subtitle1 {
    margin-top: 20px;
    font-size: 22px;
    font-weight: normal;
}
.process-steps {
    padding-top: 40px;
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    max-width: 1000px; /* 限制宽度确保每行最多3个 */
    margin: 0 auto;
    background-image: url(yjjx.png);
    background-repeat: no-repeat;
}
/* 步骤样式 */
.process-steps .step {
    width: 250px;
    margin-bottom: 25px; /* 增加垂直间距 */
    color: #000;
}
.process-steps .step .step-desc{
    font-size: 12px;
    line-height: 1.5;
}
.process-steps .step .step-name {
    font-weight: bold;
    font-size: 14px;
}
.step-num {
    width: 40px;
    height: 40px;
    line-height: 40px;
    background-color: #295FAB;
    color: #fff;
    border-radius: 50%;
    margin: 0 auto 10px;
    font-weight: bold;
    font-size: 20px;
    text-align: center;
}

/* 店家推荐 */
.recommend {
    padding: 20px 0;
}
.recommend-title {
     font-size: 32px;
    font-weight: bold;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.recommend-title .title-left {
    color: #295FAB;
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 10px;
}
.recommend-subtitle {
    text-align: center;
    margin-bottom: 20px;
    color: #666;
    font-size: 16px;
}
.nav-subtitle img {
    margin: 0 5px;
}
.recommend-card {
    display: flex;
    gap: 10px;
    padding: 0;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
}
.recommend-text {
    flex: 1; 
    max-width: 400px;
    background-color: #295FAB; 
    color: #fff;
    padding: 20px 20px 20px 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 20px 0px 20px 20px;
}
.recommend-text p{
    font-size: 20px;
    line-height: 40px;
}
.bkh{
    width: 50px;
    border-radius: 50px;
    background-color: #fbff00;
    height: 3px;
    margin-top: 60px;
}
.recommend-text h2 {
    margin: 15px 0;
    color: #fff; /* 确保标题为白色 */
    font-size: 40px;
}
   .sharp-box {
            position: relative; /* 为伪元素和子元素定位做准备 */
            width: 300px; /* 框的宽度 */
            height:48px; /* 框的高度 */
            line-height: 48px; /* 文字垂直居中 */
            text-align: center; /* 文字水平居中 */
            color: #fff; /* 文字颜色 */
            font-size: 20px;
            font-weight: bold;
            margin: 40px; /* 页面中展示 */
            padding-left: 110px;
            background-image: url('dbx.png')
        }
        
        /* 白色小尖角框：占据原框左侧全部宽度，高度为一半 */
        .sharp-box .small-box {
            position: absolute;
            left: 0;
            top: 0;
            width: 80px; /* 与原框等宽，占据左侧全部 */
            height: 46px; /* 高度为原框一半 */
            line-height: 46px; /* 文字垂直居中 */
            text-align: center;
            background-color: white; /* 白色背景 */
            color: #295FAB; /* 文字颜色与原框背景色一致 */
            font-size: 20px;
            font-weight: bold;
            z-index: 1; /* 确保小框在原框上方显示 */
        }
        
        /* 小框左侧尖角：尺寸与原框尖角一致（因宽度等宽） */
        .sharp-box .small-box::before {
            content: "";
            position: absolute;
            left: -15px; /* 与原框尖角超出距离一致 */
            top: 0;
            border-top: 23px solid transparent; /* 高度为小框的一半 */
            border-bottom: 23px solid transparent;
            border-right: 15px solid white; /* 白色，与小框背景一致 */
            z-index: -1; /* 避免遮挡原框内容 */
        }
        
        /* 小框右侧尖角：尺寸与原框尖角一致 */
        .sharp-box .small-box::after {
            content: "";
            position: absolute;
            right: -20px; /* 与原框尖角超出距离一致 */
            top: 0;
            border-top: 23px solid transparent;
            border-bottom: 23px solid transparent;
            border-left: 20px solid white; /* 白色，与小框背景一致 */
            z-index: -1;
        }
.recommend-img {
    flex: 1; /* 占据剩余空间 */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px; /* 内边距移到这里 */
}
.recommend-img img {
    max-width: 100%;
    height: auto;
}
.btn1 {
            position: relative; /* 为伪元素定位做准备 */
            width: 100px; /* 框的宽度 */
            height: 36px; /* 框的高度 */
            line-height: 36px; /* 文字垂直居中 */
            text-align: center; /* 文字水平居中 */
            background-color: #fff; /* 背景色（可替换） */
            font-size: 16px;
            font-weight: bold;
            margin: 30px; /* 页面中居中展示 */
            color: #000;
        }

        /* 左侧尖角：用伪元素 + 边框实现三角形 */
        .btn1::before {
            content: ""; /* 伪元素必须有content */
            position: absolute;
            left: -18px; /* 向左超出父元素 */
            top: 0;
            /* 边框技巧：透明边框 + 纯色边框 形成三角形 */
            border-top: 18px solid transparent;
            border-bottom: 18px solid transparent;
            border-right: 18px solid #fff; /* 与背景色一致 */
        }

        /* 右侧尖角：同理 */
        .btn1::after {
            content: "";
            position: absolute;
            right: -18px; /* 向右超出父元素 */
            top: 0;
            border-top: 18px solid transparent;
            border-bottom: 18px solid transparent;
            border-left: 18px solid #fff; /* 与背景色一致 */
        }

/* 公司简介 */
.about-us {
  text-align: center;
  position: relative;
  padding: 60px 20px 30px;
  margin-top: 10px;
  background: url(qyjjbj.png) no-repeat;
  color: white;
  letter-spacing: 0.5px; /* 整体轻微增加字间距，增强文字呼吸感（原未设置） */
}

.about-title-container {
  position: relative;
  text-align: center;
  height: 130px;
  margin-bottom: 20px;
}

.company-name {
  position: relative;
  z-index: 2; 
  margin: 0;
  font-size: 42px; /* 标题字号42px */
  font-weight: bold;
  line-height: 1.3; /* 标题行距1.3倍（原1.2，优化后更易识别） */
  letter-spacing: 1px; /* 标题字间距1px，突出层级（原未设置） */
}

.about-en {
  position: absolute;
  top: 20px; 
  left: 0;
  right: 0;
  margin: 0 auto;
  color: transparent; 
  font-size: 65px; /* 英文背景字65px */
  z-index: 1; 
  font-weight: bolder;
  font-style: italic;
  background: linear-gradient(to bottom, 
    rgba(255,255,255,1) 0%,
    rgba(255,255,255,0) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1.2; /* 英文行距1.2倍（适配 italic 字体，避免拥挤） */
  letter-spacing: 0.8px; /* 英文轻微字间距，避免字母粘连（原未设置） */
}

.about-us .company-intro {
  font-size: 17px; /* 正文字号17px */
  text-align: justify; 
  max-width: 1000px; 
  margin: 0 auto; 
  padding: 15px 0;
  text-indent: 2em; 
  letter-spacing: 0.3px; /* 正文字间距0.3px（原1px，过宽易割裂，优化后更连贯） */
  line-height: 1.7; /* 正文行距1.7倍（原1.8，适配17px字号，阅读更舒适） */
}

.about-us h2 {
  font-size: 26px; /* 二级标题26px */
  margin: 20px 0 15px;
  font-weight: bold;
  line-height: 1.4; /* 二级标题行距1.4倍（原1.3，优化后与正文区分更清晰） */
  letter-spacing: 0.8px; /* 二级标题字间距0.8px（原未设置，增强层级） */
}

.about-us button {
  margin-top: 15px;
  background-color: #28a745;
  border: #fff 1px solid;
  color: white;
  padding: 8px 16px;
  border-radius: 25px;
  cursor: pointer;
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.4; /* 按钮文字行距（保持原值，适配按钮高度） */
  letter-spacing: 0.5px; /* 按钮文字轻微字间距，提升点击欲望（原未设置） */
}

.company-features {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 30px;
}

.feature {
  background-color: white;
  padding: 25px 15px;
  border-radius: 5px;
  width: 210px;
  box-shadow: 0 2px 15px 2px rgba(0, 0, 0, 0.2);
  text-align: center;
  letter-spacing: 0.3px; /* 特征模块整体字间距，统一风格（原未设置） */
}

.feature h3 {
  font-size: 32px; /* 特征标题32px */
  font-weight: bold;
  color: #295FAB;
  text-align: center;
  height: 80px;
  line-height: 1.3; /* 特征标题行距1.3倍（适配两行文字，避免换行拥挤） */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  white-space: normal;
  margin: 0 auto 15px;
  overflow: hidden;
  letter-spacing: 0.8px; /* 特征标题字间距0.8px（原未设置，突出重点） */
}

.feature .img {
  padding-bottom: 25px;
}

.feature .text-standard {
  text-align: center;
  font-size: 15px; /* 特征正文15px */
  letter-spacing: 0.2px; /* 特征正文字间距0.2px（原0.5px，优化后更连贯） */
  padding: 20px 10px 20px;
  margin: 0;
  color: #000;
  height: 130px; 
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  font-weight: bold;
  line-height: 1.6; /* 特征正文行距1.6倍（原1.5，适配15px字号，提升可读性） */
}

.feature .en-text-center {
  text-align: center;
  color: #000;
  font-size: 7px; /* 英文小字7px */
  margin: 3px 0;
  line-height: 1.4; /* 英文小字行距1.4倍（原1.3，避免字母重叠） */
  overflow: hidden;
  letter-spacing: 0.3px; /* 英文小字轻微字间距，避免粘连（原未设置） */
}

.company-photos {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 30px 0 40px;
}

.company-photos img {
  max-width: 300px;
  border-radius: 5px;
}
/* 手机自适应样式 */
@media (max-width: 768px) {
    /* 全局样式调整 */
    body {
        font-size: 14px;
    }
    
    /* 按钮调整 */
    .btn {
        padding: 8px 20px;
        font-size: 16px;
        width: 100%;
        max-width: 300px;
    }
    
    /* 头部产品介绍 */
    .product-header {
        padding: 15px 10px;
    }
    .header-title {
        font-size: 20px;
        margin-bottom: 15px;
    }
    .product-cards {
        gap: 15px;
        padding: 0 10px;
    }
    .product-card {
        width: 100%;
        max-width: 300px;
    }
    
    /* 分类导航表格 */
    .category-nav {
        padding: 15px 10px;
    }
    .nav-title {
        font-size: 20px;
    }
    .table-wrap {
        padding: 10px;
        margin: 0 5px;
    }
    .product-table td {
        padding: 6px 4px;
        font-size: 13px;
    }
    
    /* 产品结构 */
    .product-structure {
        padding: 15px 10px;
        margin: 15px auto;
    }
    .structure-title {
        font-size: 20px;
    }
    .structure-card {
        padding: 15px;
        gap: 15px;
    }
    .structure-img img {
        max-width: 100%;
    }
    .structure-desc {
        max-width: 100%;
        padding: 0 5px;
    }
    
    /* 采购流程 */
    .purchase-process {
        padding: 15px 10px;
    }
    .process-title {
        font-size: 20px;
    }
    .process-steps {
        gap: 15px;
    }
    .step {
        width: 100px;
    }
    
    /* 店家推荐 */
    .recommend {
        padding: 15px 10px;
        margin: 15px auto;
    }
    .recommend-title {
        font-size: 20px;
    }
    .recommend-card {
        padding: 15px;
        gap: 15px;
        flex-direction: column;
    }
    .recommend-img img {
        max-width: 100%;
    }
    .recommend-text {
        max-width: 100%;
        padding: 0 5px;
    }
    
    /* 公司简介 */
    .company-intro {
        padding: 15px 10px;
    }
    .intro-title {
        font-size: 20px;
    }
    .intro-desc {
        padding: 0 5px;
    }
    .intro-advantages {
        gap: 15px;
    }
    .advantage {
        width: 100%;
        max-width: 300px;
    }
    .intro-imgs img {
        max-width: 100%;
        width: 100%;
        max-width: 280px;
    }
}

/* 小屏手机适配 (375px以下) */
@media (max-width: 375px) {
    .step {
        width: 80px;
    }
    .step-num {
        width: 25px;
        height: 25px;
        line-height: 25px;
        font-size: 13px;
    }
    .tags span {
        display: inline-block;
        margin-bottom: 5px;
    }
    .product-table td {
        font-size: 12px;
    }
}

.product-nav1 {
    background: url(zdzsj.png) no-repeat left 80px top 10px;
    padding: 20px 80px;
}

.nav-title1 {
    font-size: 26px;
    font-weight: bold;
    margin-bottom: 10px;
    margin-left: 20px;
    letter-spacing: 0.3em;
}

.nav-title1 span{
    color:#fff;
    padding-right: 5px;
}

.nav-subtitle1 {
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  width: 100%;
  font-size: 14px;
  margin: 8px 0;
}

.left-group1 {
  display: flex; 
  align-items: center;
  gap: 20px; 
  padding-left: 20px;

}

.solid-line1 {
  width: 50px;  
  height: 5px; 
  background-color: #fff; 
  color: transparent; 
  font-size: 0;      
  margin: 0;     
  padding: 0;      
  line-height: 1;    
}

.diameter-text1 {
  font-size: 16px;
}

.note-text1 {
  font-style: italic;
  font-size: 16px;
}

.nav-grid1 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 0 20px;
}

.nav-item1 {
    background-color: #fff;
    padding: 10px;
    text-align: center;
    border: 1px solid #ddd;
    font-size: 0; 
}

.nav-item1 .zdh2{
    font-size: 28px; 
    font-weight: bolder;
    padding:10px 0;
}

.nav-item1 a {
    display: inline-block;
    padding: 5px 20px;
    background-color: #007bff;
    background: linear-gradient(to bottom,#5E8DDF,#2D6AD1);
    color: #fff;
    text-decoration: none;
    margin-bottom: 5px;
    transition: background-color 0.3s;
    font-size: 14px;
    vertical-align: middle;
}

.nav-item1 a:hover {
    background-color: #0056b3;
}

.nav-item1 span {
    display: inline-block;
    padding: 5px 20px;
    background-color: #ff7b00;
    color: #fff;
    margin-bottom: 5px;
    font-size: 14px;
    vertical-align: middle;
}