* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    color: #333;
    background-color: #f7f7f7;
    scroll-behavior: smooth;
}
header {
    background-color: #ffffff;
    color: #000000af;
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
}
footer{
    padding: 20px;
    text-align: center;
    justify-content: center;
    background-color: #111;
    color: #fff;
}

@media (min-width: 0px) and (max-width:1080px) {
    .pendure_logo{
        height: 60px;
        position: absolute;
        left: 1%;
    }
    header nav{
        padding-top: 70px;
        padding-bottom: 15px;
        margin: 0 auto;
    }
    header nav a {
        margin: 0 20px;
        color: #000000;
        text-decoration: none;
        font-size: 1em;
    }
    .container {
        text-align: center;
        max-width: 1600px;
        margin: 0 auto;
        padding: 20px;
    }
    .language-switch {
        position: absolute;
        right: 2%;
        display: flex;
        margin-top: 25px;
    }
    .language-switch img{
        width: 20px;
        height: 20px;
    }
    .language_select{
        margin-top: 2px;
        margin-left: 2px;
        font-size: 0.6em;
    }
    .hero {
        background-image: url('./pic/hero.jpg'); /* 替换成实际图片 */
        background-size: cover;
        background-position: center;
        color: white;
        text-align: center;
        position: relative;
        height: 300px;
    }
    .hero-overlay {
        background:linear-gradient(#00000049, #000000e0);
        height:100%;
        padding-top: 80px;
    }
    .hero h1 {
        font-size: 2em;
        margin-bottom: 0.5em;
    }
    .hero p {
        font-size: 1em;
        
    }
    /* Section Styling */
    .section {
        padding-top: 20px;
        background-color: #f4f4f4;
    }
    .title_main{
        display: flex;
    }
    h2 {
        text-align: left;
        margin-bottom: 10px;
        font-size: 1.5em;
        color: #111;
    }
    .buttons{
        position: absolute;
        right: 5%;
        display: flex;
    }
    .buttons_right, .buttons_letf{
        margin-top: 6px;
        width: 28px;
        height: 28px;
        margin-left: 20px;
        background-size: cover;
        background-position: center;
    }
    .product{
        width: 100%;
        background-color: #ffffff;
        padding: 0px;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        transition: transform 0.3s;
    }
    .max{
        width: 100%;
        height: 400px;
    }
    .re{
        position: relative;
        height: 100%;
    }
    .re ul li{
        list-style-type:none ;
        height: 100%;
    }
    .re ul>li{
        width: 100%;
        height: 100%;
        position: absolute;
        transition: 1s;
        opacity: 0;
    }
    .re ul>li img{
        border-top-left-radius: 8px;
        border-top-right-radius: 8px;
        height: 50%;
        width: 100%;
    }
    .show{
        background-color: #ffffff;
        border-bottom-left-radius: 8px;
        border-bottom-right-radius: 8px;
        height: 50%;
    }
    .show_up{
        height: 50%;
        display: flex;
        align-items: center;
        padding: 10%;
    }
    .show_down{
        height: 50%;
        text-align: left;
    }
    .product_introduce{
        width:50%;
    }
    .product_introduce h4{
        margin-bottom: 10px;
        font-size: 2em;
        color: #124ae6;
    }
    .product_introduce h5{
        color: #454546;
        font-size: 0.5em;
    }
    .product_introduce h6{
        color: #124ae6;
        font-size: 0.5em;
    }
    .show_down h6{
        margin-left: 15%;
        margin-right: 15%;
        margin-top: 10px;
        color: #454546;
        font-size: 0.8em;
    }
    .business{
        margin: auto;
    }
    .project_1, .project_2, .project_3, .service_1, .service_2, .service_3{
        background-size: cover;
        background-position: center;
        height: 600px;
        width: 100%;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        transition: transform 0.3s;
        color: #ffffff;
        margin-top: 20px;
    }
    .project_1 div, .project_2 div, .project_3 div, .service_1 div, .service_2 div, .service_3 div{
        background:linear-gradient(#00000000, #00000062);
        height:100%;
        padding-top: 500px;
        border-radius: 8px;

    }
    .about_show{
        text-align: left;
        padding: 10px;
    }
    .about_show h6{
        font-size: 1.2em;
        color: #124ae6;;
    }
    .about_show p{
        margin-top: 10px;
        font-size: 0.8em;
        line-height: 1.2;
    }
}

@media (min-width: 1080px){
    .pendure_logo{
        height: 80px;
        position: absolute;
        left: 1%;
    }
    header nav{
        padding-top: 45px;
        padding-bottom: 15px;
        margin: 0 auto;
    }
    header nav a {
        margin: 0 20px;
        color: #000000;
        text-decoration: none;
        font-size: 1.2em;
    }
    .container {
        text-align: center;
        max-width: 1600px;
        margin: 0 auto;
        padding: 20px;
    }
    .language-switch {
        position: absolute;
        right: 2%;
        display: flex;
        margin-top: 52px;
    }
    .language-switch img{
        width: 20px;
        height: 20px;
    }
    
    .language_select{
        margin-top: 2px;
        margin-left: 2px;
        font-size: 0.6em;
    }
    .hero {
        background-image: url('./pic/hero.jpg'); /* 替换成实际图片 */
        background-size: cover;
        background-position: center;
        color: white;
        text-align: center;
        position: relative;
        height: 500px;
    }
    .hero-overlay {
        background:linear-gradient(#00000049, #000000e0);
        height:100%;
        padding-top: 80px;
    }
    .hero h1 {
        font-size: 3em;
        margin-bottom: 0.5em;
    }
    .hero p {
        font-size: 1.5em;
    }
    /* Section Styling */
    .section {
        padding: 50px 20px;
        background-color: #f4f4f4;
    }
    .title_main{
        display: flex;
    }
    h2 {
        text-align: left;
        margin-left: 8%;
        margin-bottom: 10px;
        font-size: 2em;
        color: #111;
    }
    .buttons{
        position: absolute;
        right: 15%;
        display: flex;
    }
    .buttons_right, .buttons_letf{
        margin-top: 15px;
        width: 32px;
        height: 32px;
        margin-left: 20px;
        background-size: cover;
        background-position: center;
    }
    .product-list, .project-list {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-around;
    }
    .product{
        width: 90%;
        margin: 10px;
        background-color: #ffffff;
        padding: 0px;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        transition: transform 0.3s;
        display: flex;
    }
    .max{
        width: 100%;
        height: 400px;
        align-items: center;
    }
    .re{
        position: relative;
        height: 100%;
    }
    .re ul ul{
        list-style-type:none ;
        height: 100%;
    }
    .re ul>li{
        width: 100%;
        height: 100%;
        position: absolute;
        transition: 1s;
        opacity: 0;
        display: flex;
    }
    .re ul>li img{
        border-top-left-radius: 8px;
        border-bottom-left-radius: 8px;
        width: 50%;
        height: 100%;
    }
    .show{
        background-color: #ffffff;
        border-top-right-radius: 8px;
        border-bottom-right-radius: 8px;
        width: 50%;
        height: 100%;
    }
    .show_up{
        height: 50%;
        display: flex;
        align-items: center;
        padding: 10%;
    }
    .show_down{
        height: 50%;
        text-align: left;
    }
    .product_introduce{
        width:50%;
    }
    .product_introduce h4{
        margin-bottom: 10px;
        font-size: 3em;
        color: #124ae6;
    }
    .product_introduce h5{
        color: #454546;
        font-size: 1em;
    }
    .product_introduce h6{
        color: #124ae6;
        font-size: 1em;
    }
    .show_down h6{
        margin-left: 20%;
        margin-right: 20%;
        margin-top: 20px;
        color: #454546;
        font-size: 1.2em;
    }
    .business{
        width: 93%;
        margin: auto;
    }
    .project_1, .project_2, .project_3, .service_1, .service_2, .service_3{
        background-size: cover;
        background-position: center;
        height: 600px;
        width: 30%;
        margin: 10px;
        border-radius: 8px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        transition: transform 0.3s;
        color: #ffffff;
    }
    .project_1 div, .project_2 div, .project_3 div, .service_1 div, .service_2 div, .service_3 div{
        background:linear-gradient(#00000000, #00000062);
        height:100%;
        padding-top: 500px;
        border-radius: 8px;
    }
    .about_show{
        text-align: left;
        padding: 30px;
        padding-left: 50px;
        padding-right: 50px;
    }
    .about_show h6{
        font-size: 1.5em;
        color: #124ae6;;
    }
    .about_show p{
        margin-top: 30px;
        font-size: 1em;
        line-height: 2;
        
    }
}

/* Hero Section */

/* Stats Section */
.stats {
    display: flex;
    justify-content: space-around;
    padding: 20px 0;
    margin-top: 150px;
    margin-left: 13%;
    margin-right: 13%;
}
.stat-item {
    display: flex;
    margin: auto;
}
.stat-item h3{
    font-size: 3em;
}
.stat-item p{
    margin-top: 24px;
    font-size: 1em;
}

.buttons_right{
    background-image: url('./pic/right01.png');
}

.buttons_letf{
    background-image: url('./pic/left01.png');
}

.buttons_right:hover {
    background-image: url('./pic/right02.png');
}

.buttons_letf:hover {
    background-image: url('./pic/left02.png');
}

.product:hover{
    transform: translateY(-10px);
}

/* Contact Section */

.contact-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.contact-form input, .contact-form textarea {
    width: 60%;
    padding: 5px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.contact-form button {
    padding: 8px 20px;
    background-color: #111;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.contact-form button:hover {
    background-color: #333;
}

/* 业务范围 */

.project_1{
    background-image: url('./pic/business/跟踪支架0102.jpg'); /* 替换成实际图片 */
}

.project_2{
    background-image: url('./pic/business/BIPV0202.jpg'); /* 替换成实际图片 */
}

.project_3{
    background-image: url('./pic/business/H2.png'); /* 替换成实际图片 */
}

.service_1{
    background-image: url('./pic/service/设计01.jpg'); /* 替换成实际图片 */
}

.service_2{
    background-image: url('./pic/service/开发01.jpg'); /* 替换成实际图片 */
}

.service_3{
    background-image: url('./pic/service/施工0102.jpg'); /* 替换成实际图片 */
}

.project_1:hover,.project_2:hover,.project_3:hover,.service_1:hover,.service_2:hover,.service_3:hover  {
    transform: translateY(-10px);
}

.business h3{
    font-size: 1.5em;
}

/* Downloads Section */
.download-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.download-item {
    width: 30%;
    margin: 10px;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.download-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.download-icon {
    color: #124ae6;
    margin-bottom: 20px;
}

.download-item h3 {
    font-size: 1.3em;
    color: #111;
    margin-bottom: 10px;
}

.download-item p {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 20px;
    line-height: 1.6;
}

.download-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.download-links.show {
    display: flex;
}

.download-links a {
    padding: 8px 15px;
    background-color: #ffffff;
    color: #124ae6;
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid #124ae6;
    transition: all 0.3s;
    text-align: center;
}

.download-links a:hover {
    background-color: #124ae6;
    color: #ffffff;
}

.download-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #124ae6;
    color: #ffffff;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-weight: bold;
    font-size: 0.9em;
    cursor: pointer;
}

.download-btn:hover {
    background-color: #0d39b8;
}