body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #e3f2fd; /* 浅蓝色背景 */
}

header {
    background-color: #1976d2; /* 深蓝色头部 */
    color: white;
    padding: 10px 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

nav ul {
    list-style-type: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #bbdefb; /* 鼠标悬停时变为浅蓝色 */
}

main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-top: 20px;
    margin-bottom: 60px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: white;
}

table, th, td {
    border: 1px solid #bbdefb;
}

th, td {
    padding: 12px;
    text-align: center;
}

th {
    background-color: #2196f3; /* 蓝色表头 */
    color: white;
}

tr:nth-child(even) {
    background-color: #f5f9ff; /* 斑马纹效果 */
}

footer {
    background-color: #1976d2; /* 深蓝色底部 */
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
    box-shadow: 0 -2px 5px rgba(0,0,0,0.2);
}

header h1 {
    font-size: 3em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    margin: 20px 0;
    font-weight: bold;
    color: #ffffff;
    letter-spacing: 5px;
    text-transform: uppercase;
    background: linear-gradient(45deg, #1565c0, #42a5f5);
    padding: 15px;
    border-radius: 8px;
    display: inline-block;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

h1, h2 {
    color: #1565c0; /* 深蓝色标题 */
}

section {
    margin-bottom: 30px;
}

/* 联系方式样式 */
.contact-info {
    padding: 20px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-details h3 {
    color: #1976d2;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.contact-details p {
    margin: 8px 0;
    font-size: 1.1em;
    line-height: 1.6;
}

.phone-numbers, .email, .address {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 响应式布局 */
@media (min-width: 768px) {
    .contact-details {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .phone-numbers, .email, .address {
        flex: 1;
        min-width: 250px;
    }
}

/* 产品介绍样式 */
.product-intro {
    margin-bottom: 40px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.product-feature {
    margin: 20px 0;
}

.product-feature h3 {
    color: #1976d2;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.feature-content {
    padding: 15px;
}

.feature-content ul {
    margin: 15px 0;
    padding-left: 20px;
}

.feature-content ul ul {
    margin: 10px 0;
}

.feature-content li {
    margin: 8px 0;
    line-height: 1.6;
}

.highlight {
    background-color: #e3f2fd;
    padding: 15px;
    border-left: 4px solid #1976d2;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

/* 确保产品价格表格部分的样式保持不变 */
.product-price {
    margin-top: 30px;
}

/* 主页产品概览样式 */
.product-overview {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin: 40px 0;
    justify-content: center;
}

.product-card {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card h3 {
    color: #1976d2;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.product-content {
    color: #333;
}

.product-content p {
    margin-bottom: 15px;
    font-size: 1.1em;
}

.product-content ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.product-content ul li {
    margin: 10px 0;
    padding-left: 20px;
    position: relative;
}

.product-content ul li:before {
    content: "•";
    color: #1976d2;
    position: absolute;
    left: 0;
}

.learn-more {
    display: inline-block;
    padding: 10px 20px;
    background: #1976d2;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 15px;
    transition: background 0.3s ease;
}

.learn-more:hover {
    background: #1565c0;
}

.slogan {
    text-align: center;
    font-size: 1.5em;
    color: #1976d2;
    margin: 20px 0;
}