/* 外层全宽灰色背景带圆角 */
.grade-table-wrapper {
    width: 100%;
    background-color: #f9fafb;
    border-radius: 24px;
    padding: 40px 0;
    margin: 40px 0;
}
/* 内容居中容器 */
.grade-table-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-title {
    font-family: 'Open Sans', sans-serif;
    font-weight: 700;
    font-size: 35px;
    color: #333333;
    text-align: center;
    margin-bottom: 32px;
}
/* 表格响应式容器 */
.table-responsive {
    overflow-x: auto;
    border-radius: 16px;
    border: 2px solid #cbd5e1;
    background: #ffffff;
}
.grade-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Open Sans', sans-serif;
    font-size: 15px;
    color: #555555;
    min-width: 700px;
}
.grade-table th,
.grade-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}
.grade-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #0047AB;
    border-bottom: 2px solid #cbd5e1;
}
.grade-table tr:last-child td {
    border-bottom: none;
}
.grade-name {
    font-weight: 600;
}
/* 产品链接样式 */
.grade-link {
    color: #0047AB;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}
.grade-link:hover {
    text-decoration: underline;
    color: #002a6b;
}
.grade-table tbody tr:hover {
    background-color: #f9fafb;
}
@media (max-width: 768px) {
    .grade-table-wrapper {
        padding: 30px 0;
    }
    .section-title {
        font-size: 28px;
        margin-bottom: 24px;
    }
    .grade-table th,
    .grade-table td {
        padding: 10px 12px;
        font-size: 14px;
    }
}