/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: #333;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    background-color: #0066cc;
    color: #fff;
    padding: 10px 25px;
    border-radius: 5px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background-color: #004c99;
    transform: translateY(-2px);
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    margin-bottom: 10px;
    color: #0066cc;
    position: relative;
    display: inline-block;
}

.section-title h2:after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background-color: #0066cc;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-title p {
    color: #666;
    font-size: 18px;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.logo img {
    height: 60px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: #0066cc;
    bottom: 0;
    left: 0;
    transition: width 0.3s ease;
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
}

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

/* 英雄区域样式 */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
    margin-top: 90px;
}

.slider {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    display: flex;
    align-items: center;
}

.slide.current {
    opacity: 1;
}

.slide .content {
    position: absolute;
    top: 50%;
    left: 50px;
    transform: translateY(-50%);
    color: #fff;
    max-width: 600px;
    z-index: 10;
}

.slide .content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.slide .content p {
    font-size: 24px;
    margin-bottom: 30px;
}

.slide img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

/* 关于我们预览区域样式 */
.about-preview {
    padding: 80px 0;
    background-color: #fff;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.about-image {
    flex: 1;
}

/* 产品展示预览区域样式 */
.products-preview {
    padding: 80px 0;
    background-color: #f5f5f5;
}

.product-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.product-item {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.product-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-item h3 {
    padding: 20px 20px 10px;
    font-size: 20px;
    color: #0066cc;
}

.product-item p {
    padding: 0 20px 20px;
    color: #666;
}

.center-btn {
    text-align: center;
}

/* 联系我们预览区域样式 */
.contact-preview {
    padding: 80px 0;
    background-color: #fff;
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.info-item {
    text-align: center;
    padding: 30px 20px;
    background-color: #f9f9f9;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.info-item i {
    font-size: 36px;
    color: #0066cc;
    margin-bottom: 15px;
}

.info-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.info-item p {
    color: #666;
}

.contact-qrcode {
    flex: 1;
    text-align: center;
}

.contact-qrcode img {
    max-width: 200px;
    margin-bottom: 15px;
}

/* 留言表单样式 */
.message-form {
    padding: 80px 0;
    background-color: #f5f5f5;
}

form {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

input, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus, textarea:focus {
    border-color: #0066cc;
    outline: none;
}

textarea {
    height: 150px;
    resize: vertical;
}

/* 页脚样式 */
footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-logo {
    flex: 1;
    min-width: 300px;
    margin-bottom: 30px;
}

.footer-logo img {
    height: 60px;
    margin-bottom: 15px;
}

.footer-links, .footer-contact {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}

.footer-links h3, .footer-contact h3 {
    font-size: 20px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3:after, .footer-contact h3:after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background-color: #0066cc;
    bottom: 0;
    left: 0;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: #0066cc;
}

.footer-contact p {
    margin-bottom: 15px;
    color: #ccc;
}

.footer-contact p i {
    margin-right: 10px;
    color: #0066cc;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content, .contact-content {
        flex-direction: column;
    }
    
    .slide .content h1 {
        font-size: 36px;
    }
    
    .slide .content p {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    nav {
        position: fixed;
        top: 90px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 90px);
        background-color: #fff;
        transition: left 0.3s ease;
    }
    
    nav.active {
        left: 0;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        padding-top: 50px;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .slide .content {
        left: 20px;
        max-width: 90%;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .section-title h2 {
        font-size: 28px;
    }
    
    .slide .content h1 {
        font-size: 28px;
    }
    
    .slide .content p {
        font-size: 16px;
    }
    
    form {
        padding: 20px;
    }
}