body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.form-group {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.form-group label {
    width: 150px;
    font-weight: bold;
    color: #555;
    margin-right: 10px;
}

.form-group select,
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input:not([readonly]) {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 10px;
    font-size: 16px;
}

.form-group input[readonly] {
    padding: 8px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-right: 10px;
    font-size: 16px;
    background-color: #f9f9f9;
    color: #666;
}

.or-text {
    margin: 0 10px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        margin: 5px;
    }
    
    .form-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-group label {
        width: 100%;
        margin-bottom: 5px;
    }
    
    .form-group > * {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .or-text {
        align-self: center;
    }
    
    /* 特别针对生日行的移动端样式 */
    #birthday-group {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    #birthday-group select {
        flex: 1;
        min-width: 40%;
        margin-right: 5px;
    }
}

/* 针对更小屏幕的优化 */
@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .form-group select,
    .form-group input[type="number"],
    .form-group input[type="date"],
    .form-group input:not([readonly]) {
        font-size: 16px; /* 确保在移动设备上有足够的触摸目标大小 */
        padding: 12px 8px;
    }
    
    #birthday-group {
        flex-direction: row;
    }
    
    #birthday-group select {
        flex: 1;
        min-width: 40%;
        margin-right: 5px;
    }
    
    h1 {
        font-size: 1.5em;
        margin-bottom: 20px;
    }
    
    .container {
        padding: 10px;
    }
}