* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}
/* 全局样式 - 核心配色重构：低饱和沉稳商务风 */
:root {
    --primary: #2D4B80; /* 主色调：深海蓝（低饱和，替代原亮蓝） */
    --secondary: #4A6FA5; /* 辅助蓝（更柔和） */
    --light-gray: #F8F9FA; /* 浅灰背景（更柔和） */
    --dark-gray: #586069; /* 文字深灰（降低对比度，更护眼） */
    --white: #FFFFFF; 
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05); /* 弱化阴影，更轻盈 */
    --new-gray: #E9EBEE; 
    /* 分类背景色：低饱和莫兰迪色系，替代原亮色 */
    --category1: #F0F5FA; /* 设备厂家 - 浅雾霾蓝 */
    --category2: #F5FAF7; /* 设备类别 - 浅雾霾绿 */
    --category3: #F9F5FA; /* 宽带系列 - 浅雾霾紫 */
    --category4: #FAF9F0; /* 传输系列 - 浅雾霾黄 */
    --category5: #FAF0F0; /* 智能办公 - 浅雾霾橙 */
    --category6: #F0FAFA; /* 可视化监控 - 浅雾霾青 */
}
body {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}
/* 全局容器：保留原有宽度配置 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 15px;
}
section {
    padding: 60px 0;
}
.title-box {
    text-align: center;
    margin-bottom: 40px;
}
.title {
    font-size: 1.6rem;
    color: #2D3748; /* 深灰黑，替代原#333，更沉稳 */
    margin-bottom: 12px;
    font-weight: 600;
    line-height: 1.3;
}
.subtitle {
    font-size: 0.95rem;
    color: var(--dark-gray);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.7;
}
/* 按钮样式：渐变更柔和，阴影更轻 */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, #e57502, #a5a017);
    /*background: linear-gradient(135deg, var(--primary), var(--secondary));*/
    color: var(--white);
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 3px 8px rgba(45, 75, 128, 0.15); /* 弱化阴影 */
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 12px rgba(45, 75, 128, 0.2); 
    /*background: linear-gradient(135deg, #25406B, #3F6299); */ 
    background: linear-gradient(135deg, #bb5803, #9d8633);
}
/* 头部Banner：渐变更柔和，弱化背景图透明度 */
.banner {
    background: linear-gradient(135deg, #1A365D, var(--primary));
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.banner::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: url(https://datacomit.cn/static/images/city.jpg) no-repeat center center;
    background-size: cover;
    opacity: 0.15; /* 降低背景图透明度，更融合 */
}
.banner-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.banner-text {
    flex: 1;
}
/* 优化Banner标题：分层配色+字重增强层级 */
.banner-title {
    font-size: 2.5rem;
    margin-bottom: 24px;
    font-weight: 700;
    line-height: 3.6;
}
.banner-title span {
    color: #619df5; /* 浅蓝高亮，突出核心卖点 */
    font-weight: 800;
}
/* 副标题分层：主副标题区分配色深浅 */
.banner-subtitle-primary {
    font-size: 1.3rem;
    max-width: 700px;
    margin-bottom: 16px;
    color: #E2E8F0; /* 浅灰白，主副标题 */
    font-weight: 500;
    line-height: 1.7;
}
.banner-subtitle-secondary {
    font-size: 1.1rem;
    max-width: 700px;
    margin-bottom: 60px;
    color: rgba(226, 232, 240, 0.85); /* 更低透明度，次要说明 */
    font-weight: 300;
    line-height: 2.7;
}
/* Banner商城分类容器：背景更通透 */
.banner-carousel {
    flex: 0 0 30%;
    height: 380px;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    background: rgba(255, 255, 255, 0.08); /* 更通透的背景 */
    padding: 15px;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 10px;
    backdrop-filter: blur(4px); /* 毛玻璃效果，提升质感 */
}
/* 商城分类卡片：低饱和背景，文字更协调 */
.mall-category {
    border-radius: 8px;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1); /* 细边框，提升精致感 */
}
.mall-category.hardware-brand {
    background: var(--category1);
}
.mall-category.hardware-type {
    background: var(--category2);
}
.mall-category.broadband {
    background: var(--category3);
}
.mall-category h4 {
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 6px;
    text-align: center;
    font-weight: 600;
    border-bottom: 1px solid rgba(45, 75, 128, 0.1); /* 弱化分割线 */
    padding-bottom: 4px;
}
.mall-category p {
    color: #4A5568; /* 中灰，替代原#333 */
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding-top: 4px;
}
.mall-tag {
    background: rgba(255,255,255,0.9);
    padding: 3px 7px;
    border-radius: 4px;
    color: var(--dark-gray);
    font-size: 0.85rem;
    border: 1px solid #E2E8F0; /* 更柔和的边框色 */
}

/* 品牌介绍板块：更柔和的文字色 */
.brand-intro {
    background: var(--white);
    padding: 40px 0;
    border-bottom: 1px solid #E9EBEE; /* 弱化分割线 */
}
.brand-desc {
    font-size: 1.6rem;
    font-weight:bold;
    color: #681fd9ee; /* #4A5568;中灰，更柔和 */
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
    line-height: 1.8;
    padding: 0 15px;
}

/* 核心优势板块：卡片更轻盈 */
.advantages {
    background: var(--light-gray);
}
.advantage-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 15px;
}
.advantage-item {
    background: var(--white);
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary);
    transition: all 0.3s ease; /* 增加hover过渡 */
}
.advantage-item:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.07); /* hover轻微提阴影 */
    transform: translateY(-3px); /* 轻微上浮 */
}
.advantage-item ul{
    /*margin-left:1.5rem;*/
}
.advantage-item p{
    padding:10px 0px 5px 0px;
}
.advantage-item li{
    font-size:15px;
}
.advantage-title {
    font-size: 1.4rem;
    color: #2D3748; /* 深灰黑 */
    /* margin-bottom: 15px; */
    display: flex;
    align-items: center;
}
.advantage-title span {
    display: inline-block;
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    text-align: center;
    line-height: 36px;
    margin-right: 10px;
    font-weight: bold;
    box-shadow: 0 2px 6px rgba(45, 75, 128, 0.1); /* 轻微阴影，提升质感 */
}
.advantage-desc {
    color: var(--dark-gray);
    font-size: 1rem;
    line-height: 1.8;
}
.advantage-desc ul {
    list-style: none;
    margin-top: 10px;
    padding-left: 10px;
}
.advantage-desc ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 18px;
}
.advantage-desc ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--secondary); /* 辅助色，更柔和 */
    font-weight: bold;
}

/* 标准化交付板块：卡片背景更柔和 */
.standard-delivery {
    background: var(--white);
}
.delivery-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 15px;
}
.delivery-item {
    background: var(--light-gray);
    padding: 30px 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease; /* 增加hover过渡 */
}
.delivery-item:hover {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.07);
    transform: translateY(-3px);
}
.delivery-title {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 12px;
    font-weight: 600;
}
.delivery-desc {
    color: var(--dark-gray);
    font-size: 1rem;
    line-height: 1.7;
}

/* 招募合作对象板块：更柔和的配色 + 3列布局优化 */
.recruit {
    background: var(--light-gray);
    padding: 60px 0;
}
.recruit-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    align-items: start;
}
/* 列标题样式：突出区分 */
.recruit-column-title {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--secondary);
    font-weight: 700;
}
/* 列内容样式 */
.recruit-column-content {
    color: var(--dark-gray);
    font-size: 1rem;
    line-height: 1.8;
}
.recruit-column-content ul {
    list-style: none;
    padding-left: 0;
}
.recruit-column-content li {
    padding: 8px 0;
    position: relative;
    padding-left: 20px;
}
.recruit-column-content li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
    font-size: 1rem;
}

/* 表单板块：更柔和的样式 */
.form-section {
    background: var(--white);
    padding-bottom: 80px;
}
.form-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--light-gray);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.form-title {
    font-size: 1.6rem;
    color: #2D3748; /* 深灰黑 */
    margin-bottom: 15px;
    text-align: center;
}
/* 分销奖励机制说明：低饱和背景 */
.reward-desc {
    background: rgba(45, 75, 128, 0.03); /* 低饱和背景 */
    border-left: 4px solid var(--primary);
    padding: 15px;
    margin-bottom: 25px;
    border-radius: 0 8px 8px 0;
    height:170px;
}
.reward-desc h4 {
    color: var(--primary);
    margin-bottom: 8px;
    font-size: 1.1rem;
}
.reward-desc p {
    font-size: 0.95rem;
    color: var(--dark-gray);
    line-height: 1.6;
}
.form-group {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2D3748; /* 深灰黑 */
}
.form-input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #E2E8F0; /* 更柔和的边框 */
    border-radius: 8px;
    font-size: 1rem;
    transition: border 0.3s ease;
    background: var(--white);
}
.form-input:focus {
    outline: none;
    border-color: var(--secondary); /* 聚焦用辅助色，更柔和 */
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.1); /* 低饱和聚焦阴影 */
}
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 8px;
}
.radio-item {
    display: flex;
    align-items: center;
}
.radio-item input {
    margin-right: 5px;
    accent-color: var(--primary); /* 单选框配色同步主色 */
}
.form-btn {
    width: 100%;
    margin-top: 10px;
}
.form-tip {
    text-align: center;
    margin-top: 15px;
    font-size: 0.9rem;
    color: #718096; /* 浅灰，更柔和 */
}
/* 页脚：更沉稳的配色 */
footer {
    background: #2D3748; /* 深灰黑，替代原#333 */
    color: rgba(255, 255, 255, 0.85); /* 提高文字透明度，更柔和 */
    padding: 40px 0;
    text-align: center;
}
.footer-contact {
    margin-bottom: 20px;
    font-size: 1.1rem;
}
.footer-contact a {
    color: #B4C7E7; /* 浅蓝，替代原亮蓝 */
    text-decoration: none;
    transition: color 0.3s ease;
}
.footer-contact a:hover {
    color: var(--white); /* hover变白 */
}
.copyright {
    font-size: 0.9rem;
    opacity: 0.7;
}
/* 按钮+图片容器垂直居中 */
.btn-img-group {
  display: flex;          
  align-items: center;    
  gap: 20px;              
  margin: 0;              
  padding: 0;             
  justify-content: flex-start;
  max-width:750px;
}
.btn-img-group a{
    font-size:20px;
    letter-spacing: 2px; 
    font-weight:bold;
}
.wxmiaoshu{
    display: none;
}
.btn-img-group img {
  vertical-align: middle; 
}
.rtewm{
    width:120px;
    float:right;
    margin-top:-125px;
}
.rtewm p{
    margin: 0 auto;
    text-align: center;
}
.reward-desc p{
    line-height: 30px;
}
/* 响应式适配：保留原有逻辑 */
@media (max-width: 768px) {
    .banner-title {
        font-size: 2rem;
    }
    .title {
        font-size: 1.6rem;
    }
    .advantage-card {
        grid-template-columns: 1fr;
    }
    .delivery-card {
        grid-template-columns: 1fr;
    }
    .banner {
        padding: 60px 0;
    }
    .banner-content {
        flex-direction: column;
        gap: 30px;
    }
    .banner-carousel {
        width: 100%;
        flex: none;
        height: auto;
        min-height: 300px;
    }
    .recruit-container {
        grid-template-columns: 1fr;
    }
    section {
        padding: 40px 0;
    }
    .form-card {
        padding: 30px 20px;
    }
    .brand-desc {
        font-size: 1rem;
        padding: 0 15px;
    }
}