* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    color: #333;
}

header {
    background-color: #0052cc;
    color: #fff;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header .logo {
    font-size: 1.5em;
}

header nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    font-weight: bold;
}

header .login-btn {
    background-color: #fff;
    color: #0052cc;
    padding: 5px 10px;
    border-radius: 5px;
}

.hero {
    text-align: center;
    padding: 20px;
}

.hero h1 {
    font-size: 2.5em;
    color: #0052cc;
}

.hero p {
    font-size: 1.2em;
    color: #666;
    margin-top: 10px;
}

.services {
    display: flex;
    justify-content: space-around;
    padding: 20px 20px;
}

.service-box {
    width: 30%;
    text-align: center;
}

.service-box h2 {
    font-size: 1.5em;
    color: #0052cc;
}

.service-image {
    width: 100%;
    height: 200px;
    background-color: #ddd;
    margin: 20px 0;
}

.placeholder {
    display: block;
    background-color: #aaa;
}

button {
    background-color: #0052cc;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #003da1;
}

.featured-services {
    padding: 40px 20px;
    text-align: center;
}

.featured-services h2 {
    font-size: 2em;
    color: #0052cc;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 20px;
}

.feature-item {
    width: 30%;
    padding: 10px;
    margin: 10px;
    background-color: #eee;
    border-radius: 5px;
    text-align: center;
    color: #333;
}

.join-us {
    text-align: center;
    padding: 40px 0;
}

footer {
    background-color: #0046b8;
    color: white;
    text-align: center;
    padding: 1rem;
    font-size: 14px;
    position: fixed;       /* 固定位置 */
    left: 0;
    bottom: 0;             /* 固定在页面底部 */
    width: 100%;           /* 宽度占满全屏 */
    z-index: 9999;         /* 确保页脚位于最上层 */
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 10px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 5px 10px;
}

.social-media a {
    color: #fff;
    font-size: 1.5em;
    margin: 0 10px;
}

.service-image {
    width: 100%;
    height: auto;
    margin: 20px 0;
    border-radius: 10px; /* 可选：如果需要圆角 */
}


/* 容器样式 */
.join-us-container {
    position: relative;
    width: 100%;
    max-width: 800px; /* 可根据实际需求调整宽度 */
    margin: 20px auto;
}

/* 背景图片样式 */
.background-image {
    width: 100%;
    height: auto;
}

/* 悬浮按钮样式 */
.join-us-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 10px 30px;
    background-color: #ffffff; /* 白色背景 */
    color: #007bff; /* 蓝色字体 */
    border: 2px solid #007bff; /* 蓝色边框 */
    border-radius: 5px; /* 圆角 */
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* 悬停效果 */
.join-us-button:hover {
    background-color: #007bff; /* 背景变蓝 */
    color: #ffffff; /* 字体变白 */
}