* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    width: 100%;
    height: 100%;
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    background-color: #f4f7f6;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* 容器样式 - 核心居中 */
.container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

/* 学校 Logo 图片样式 */
.school-logo {
    max-width: 200px;
    height: auto;
    margin: 0 auto 20px;
    display: block;
}

/* 标题样式 */
h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
}

/* 课程表表格样式 */
.schedule-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 auto 30px;
    border: 2px solid #333;
}

/* 单元格样式 */
.schedule-table th,
.schedule-table td {
    border: 2px solid #333;
    padding: 15px;
    text-align: center;
    font-size: 16px;
}

/* 表头样式 */
.schedule-table thead {
    background-color: #007bff;
    color: white;
}

.schedule-table th {
    font-weight: bold;
    padding: 15px;
}

/* 表格主体样式 */
.schedule-table tbody td {
    background-color: #ffffff;
}

.schedule-table tbody tr:nth-child(odd) {
    background-color: #f9f9f9;
}

.schedule-table tbody tr:nth-child(even) {
    background-color: #ffffff;
}

.schedule-table tbody tr:hover {
    background-color: #e9ecef;
    cursor: pointer;
}

/* 跳转链接样式 */
.jump-link {
    text-align: center;
    margin-top: 20px;
}

.jump-link a {
    display: inline-block;
    padding: 12px 30px;
    background-color: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-size: 16px;
    transition: background-color 0.3s ease;
    cursor: pointer;
}