body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f5f5f5;
}

.sticky {
  position: sticky;
  top: 0;
  z-index: 10;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h1 {
    text-align: center;
    color: #333;
    margin-bottom: 5px;
}
.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 20px;
}
table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}
th, td {
    border: 1px solid #878686;
    padding: 5px;
    text-align: center;
    font-size: 20px;
}
th {
    background-color: #ffcc00; /* 黄色背景 */
    font-weight: bold;
}
/* 单数行背景色 */
tbody tr:nth-child(6n+1),
tbody tr:nth-child(6n+2),
tbody tr:nth-child(6n+3) {
    background-color: #D9E1F4; /* 浅蓝色 */
}
/* 双数行背景色 */
tbody tr:nth-child(6n+4),
tbody tr:nth-child(6n+5),
tbody tr:nth-child(6n+6) {
    background-color: #E3F2D9; /* 浅绿色 */
}
.negative {
    color: red;
}
.empty-row td {
    border: none;
    height: 5px;
}