body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #fabff0;
}

/* Navigation Bar */
.navbar {
    background-color: #333;
    padding: 20px 0;
}

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 60px;
}

.nav-menu li {
    margin: 0;
    position: relative;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-size: 24px;
    padding: 14px 20px;
    display: block;
    transition: color 0.3s;
    white-space: nowrap;
    font-weight: normal;
}

.nav-menu a:hover {
    color: #ff0000;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #333;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1;
    top: 100%;
    left: 0;
}

.dropdown-content a {
    color: white;
    padding: 16px 20px;
    text-decoration: none;
    display: block;
    font-size: 20px;
    border-top: 1px solid #444;
    white-space: nowrap;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a:hover {
    background-color: #444;
    color: #ff0000;
}

/* Image Slider */
.slider-container {
    width: 80%;
    height: 400px;
    overflow: hidden;
    margin: 30px auto;
}

.slider {
    display: flex;
    width: 400%; /* 减少宽度，以缩小图片间距 */
    height: 100%;
    animation: slide 30s infinite linear;
}

.slider img {
    width: 25%; /* 调整图片宽度以适应新的容器宽度 */
    height: 100%;
    object-fit: contain;
    padding: 0 0.5%; /* 将内边距从1%缩小到0.5% */
}

@keyframes slide {
    0% { transform: translateX(0); }
    100% { transform: translateX(-75%); } /* 调整滚动距离 */
}

/* Audio Player */
.audio-player {
    position: fixed;
    bottom: 20px;
    width: 100%;
    text-align: center;
}

audio {
    width: 300px;
}

/* Personal Info Table */
.info-container {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: rgba(255, 255, 255, 0.9);
}

.info-table caption {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.info-table th, .info-table td {
    padding: 12px;
    border: 1px solid #ddd;
    text-align: left;
}

/* Course Table */
.course-container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
}

.course-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff5e6;
}

.course-table caption {
    font-size: 24px;
    margin-bottom: 15px;
    color: rgb(255, 255, 255);
}

.course-table th, .course-table td {
    padding: 12px;
    border: 1px solid #333;
    text-align: center;
}

/* Login Form */
.login-container {
    max-width: 500px;
    margin: 30px auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.button-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

.button-group button {
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
}

.button-group button:hover {
    background-color: #45a049;
}

.baidu-logo {
    text-align: center;
    margin-top: 20px;
}

.baidu-logo img {
    max-width: 200px;
}