/* 主要字体 */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f7f7f7;
    color: #333;
}

/* 顶部导航栏 */
header {
    background-color: #2c3e50;
    color: white;
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .logo h1 {
    margin: 0;
    font-size: 1.8rem;
}

header nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
}

header nav ul li {
    margin-right: 30px;
}

header nav ul li:last-child {
    margin-right: 0;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s;
}

header nav ul li a:hover {
    color: #ecf0f1;
}

/* 首页横幅 */
.banner {
    background: linear-gradient(to right, #16a085, #1abc9c);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.banner h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.banner p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.btn-primary {
    background-color: #ecf0f1;
    color: #2c3e50;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #bdc3c7;
}

/* 服务项目 */
.services {
    background-color: white;
    padding: 60px 20px;
    text-align: center;
}

.services h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 500;
}

.service-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.service-item {
    width: 30%;
    margin: 15px;
    background-color: #ecf0f1;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    text-align: left;
    transition: transform 0.3s;
}

.service-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-item p {
    font-size: 1rem;
    color: #7f8c8d;
}

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

/* 关于我们 */
.about {
    background-color: #f7f7f7;
    padding: 60px 20px;
    text-align: center;
}

.about p {
    font-size: 1.2rem;
    color: #7f8c8d;
    line-height: 1.6;
}

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

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

.contact ul li {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

/* 备案号 */
.icp {
    background-color: #bdc3c7;
    text-align: center;
    padding: 10px;
    font-size: 0.9rem;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
}

footer p {
    margin: 0;
}