/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    color: #333;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style-type: none;
}

/* 顶部导航栏 */
header {
    background-color: #003366;
    padding: 20px 0;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo h1 {
    color: white;
    font-size: 24px;
    font-weight: bold;
}

nav ul {
    display: flex;
    gap: 30px;
}

nav ul li {
    font-size: 18px;
}

nav ul li a {
    color: white;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #f39c12;
}

/* 主横幅区域 */
.hero {
    background: url('https://via.placeholder.com/1920x600') no-repeat center center/cover;
    color: white;
    text-align: center;
    padding: 120px 20px;
}

.hero-text h2 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 24px;
    margin-bottom: 40px;
}

.cta-button {
    padding: 15px 30px;
    background-color: #f39c12;
    color: white;
    font-size: 18px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.cta-button:hover {
    background-color: #e67e22;
}

/* 关于我们 */
#about {
    max-width: 1200px;
    margin: 60px auto;
    padding: 0 20px;
    text-align: center;
}

#about h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

#about p {
    font-size: 18px;
    line-height: 1.6;
    color: #555;
}

/* 我们的服务 */
#services {
    background-color: #ffffff;
    padding: 60px 20px;
    text-align: center;
}

#services h2 {
    font-size: 36px;
    margin-bottom: 40px;
}

.service-container {
    display: flex;
    justify-content: space-around;
    gap: 20px;
}

.service-item {
    background-color: #f4f4f4;
    padding: 30px;
    width: 30%;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.service-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.service-item p {
    font-size: 16px;
    color: #666;
}

/* 联系我们 */
#contact {
    background-color: #eeeeee;
    padding: 60px 20px;
    text-align: center;
}

#contact h2 {
    font-size: 36px;
    margin-bottom: 40px;
}

.contact-info p {
    font-size: 18px;
    color: #555;
    margin-bottom: 10px;
}

/* 页脚 */
footer {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 20px 0;
    position: relative;
}

footer p {
    font-size: 16px;
    margin: 5px 0;
}