body {
    font-family: "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 92%;
    background: #111;
    /* 深色背景 */
    color: #fff;
    padding: 15px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

header .logo {
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 2px;
}

nav a {
    margin: 0 20px;
    text-decoration: none;
    color: #eee;
    font-size: 16px;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

nav a:hover {
    color: #2196f3;
}

nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 3px;
    background: #2196f3;
    transition: width 0.3s;
}

nav a:hover::after {
    width: 100%;
}

section {
    padding: 80px 10% 100px;
    /* 上下留白，保证大气 */
    box-sizing: border-box;
}

/* 统一标题样式 */
section h2 {
    width: 100%;
    text-align: left;
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 12px 0;
    /* 下方留 24px 就够了，不会太远 */
    color: #222;
    letter-spacing: 2px;
    position: relative;
}

/* 标题下增加一条小蓝线（装饰，显得精致） */
section h2::after {
    content: "";
    display: block;
    width: 120px;
    height: 3px;
    margin: 12px 0;
    background-color: #007BFF;
    border-radius: 2px;
}

/* section 内部的内容容器，避免 h2 影响布局 */
section>*:not(h2) {
    margin-top: 0;
    /* 避免被默认 margin 推开 */
}

/* 首页 */
#home {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #000;
    color: #fff;
}

#home video {
    width: 80%;
    max-width: 900px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

/* 公司简介 */
#about {
    display: flex;
    align-items: left;
    gap: 40px;
    flex-wrap: wrap;
}

#about img {
    width: 40%;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

#about .text {
    flex: 1;
    font-size: 18px;
}

/* 产品 */
#products {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

#products .product {
    flex: 1;
    background: #f8f8f8;
    padding: 20px;
    border-radius: 12px;
    text-align: left;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

#products img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

/* 核心优势 */
#advantages {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

#advantages .adv {
    width: 15%;
    text-align: left;
    padding: 20px;
    box-sizing: border-box;
}

/* 图片调大 */
#advantages .adv img {
    width: 200px;
    height: auto;
    margin-bottom: 16px;
}

/* 小标题 */
#advantages .adv p:first-of-type {
    font-size: 20px;
    /* 比正文大 */
    font-weight: 600;
    color: #222;
    margin: 8px 0;
    position: relative;
}

/* 小标题下的蓝色下划线 */
#advantages .adv p:first-of-type::after {
    content: "";
    display: block;
    width: 40px;
    height: 3px;
    background-color: #007BFF;
    margin: 6px 0;
    border-radius: 2px;
}

/* 正文描述 */
#advantages .adv p:last-of-type {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-top: 10px;
}

/* 联系我们 */
#contact {
    background: #f8f9fb;
}

.contact-box {
    max-width: 1200px;
    margin: 0 auto;
}

.contact-tabs {
    text-align: center;
    margin-bottom: 30px;
}

.contact-tabs span {
    display: inline-block;
    margin: 0 12px;
    padding: 6px 16px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 20px;
    background: #eaeaea;
    transition: all 0.3s;
}

.contact-tabs span.active,
.contact-tabs span:hover {
    background: #2196f3;
    color: #fff;
}
.contact-info {
    max-width: 700px;
    margin: 0 auto 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    font-size: 16px;
    color: #333;
}

.contact-item img {
    width: 24px;
    margin-right: 12px;
}
.contact-map {
    width: 100%;
    height: 360px;
    border-radius: 12px;
    overflow: hidden;
}

#dituContent {
    width: 100%;
    height: 100%;
}


/* ********************one*********************** */
.box {
    width: 100%;
}

.container {
    width: 100%;
    height: 100%;
    min-width: 1000px;
    position: relative;
    overflow: hidden;
    font-size: 0;
}

.bg {
    width: 100%;
}

.bg1 {
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
}


.title {
    width: 94.21%;
    position: absolute;
    top: 250px;
    left: 50%;
    transform: translateX(-50%);
}

.container1 {
    width: 100%;
    /* 图片在盒子中居中 */
    text-align: center;
    font-size: 0;
    overflow: hidden;
}

.content1 {
    /* width: 78.82%; */
    margin-top: 100px;
}

.content6 {
    margin-top: 100px;
    position: relative;
}

.content6_box {
    position: relative;
    display: inline-block;
}

.content_header {
    width: 260px;
    height: 30px;
    position: absolute;
    top: 5px;
    left: 160px;
}

.content_header ul li {
    font-size: 16px;
    cursor: pointer;
    color: #333333;
    display: inline-block;
    position: relative;
    margin-left: 10px;
}

.content_header_line {
    width: 0%;
    background-color: #0065e8;
    height: 1px;
    position: absolute;
    bottom: -5px;
    border-radius: 10px;
    left: 50%;
    transition: all 0.6s cubic-bezier(0.215, 0.61, 0.355, 1) 0s;
    -webkit-transition: all 0.6s cubic-bezier(0.215, 0.61, 0.355, 1) 0s;
}

.content6_left {
    width: 560px;
    height: 260px;
    left: 65px;
    top: 140px;
    position: absolute;
}

.content6_left ul li {
    width: 560px;
    height: 68px;
}

.content6_left_address {
    position: absolute;
    top: 0;
    left: 0;
}

.content6_left_phone {
    position: absolute;
    top: 65px;
    left: 0;
}

.content6_left_fax {
    position: absolute;
    top: 130px;
    left: 0;
}

.content6_left_email {
    position: absolute;
    top: 195px;
    left: 0;
}

.content6_left_icon {
    position: absolute;
    top: 0;
    left: 0;
}

.content6_left_info {
    font-size: 16px;
    color: #333333;
    position: absolute;
    top: 15px;
    left: 70px;
}

.content6_right {
    width: 800px;
    height: 360px;
    position: absolute;
    right: 21px;
    top: 86px;
}

.content7 {
    width: 100%;
    margin-top: 100px;
    position: relative;
}

.content7_bg {
    width: 100%;
}

.content7_img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
}



/* 引用百度地图 */
.iw_poi_title {
    color: #CC5522;
    font-size: 14px;
    font-weight: bold;
    overflow: hidden;
    padding-right: 13px;
    white-space: nowrap;
}

.iw_poi_content {
    font: 12px arial, sans-serif;
    overflow: visible;
    padding-top: 4px;
    /* white-space: -moz-pre-wrap; */
    word-wrap: break-word;
}

.BMap_bubble_title {
    font-size: 10px;
}

.BMap_bubble_content {
    font-size: 10px;
}



/* ===============================
   通用响应式基础
================================ */
img, video {
    max-width: 100%;
    height: auto;
}

body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* ===============================
   Header 手机适配
================================ */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
}

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

.site-nav {
    display: flex;
    gap: 20px;
}

/* ===============================
   手机端样式
================================ */
@media screen and (max-width: 768px) {

    /* Header */
    .menu-toggle {
        display: block;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: #697db4;
        flex-direction: column;
        text-align: center;
        z-index: 999;
    }

    .site-nav a {
        padding: 12px 0;
        border-bottom: 1px solid #eee;
    }

    .site-nav.show {
        display: flex;
    }

    /* 首页视频 & 背景 */
    .container {
        position: relative;
        min-width: 0 !important;
        width: 100%;
    }

    .bg {
        width: 100%;
        height: auto;
        object-fit: cover;
    }

    .title {
        width: 80%;
        position: absolute;
        left: 10%;
        top: 30%;
    }

    section h2 {
        font-size: 20px;
        text-align: center;
    }

    /* 公司简介 */
    #about img {
        width: 100%;
        margin-bottom: 15px;
    }

    #about .text p {
        font-size: 14px;
        line-height: 1.8;
    }

    /* 产品 */
    #products {
        display: block;
    }

    .product {
        margin-bottom: 30px;
        text-align: center;
    }

    #advantages {
        display: block !important;
    }

    #advantages .adv {
        width: 100% !important;
        padding: 15px 10px;
        margin-bottom: 20px;
        box-sizing: border-box;
    }

    #advantages .adv img {
        width: 80px;
        margin-bottom: 10px;
    }

    /* 联系我们 */
     .contact-info {
        padding: 0 10px;
    }

    .contact-item {
        font-size: 14px;
    }

    .contact-map {
        height: 260px;
        margin-top: 20px;
    }


    /* 所有 section 强制全宽 */
    section {
        padding: 30px 15px !important;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* 公司简介 */
    #about {
        display: block !important;
    }

    #about img {
        width: 100% !important;
        display: block;
    }

    #about .text {
        width: 100% !important;
        margin: 0;
        padding: 0;
    }

    /* 公司产品 */
    #products {
        display: block !important;
    }

    .product {
        width: 100% !important;
        box-sizing: border-box;
    }
}