/* 确保特殊字符正确显示 */
.math-symbols {
    font-family: 'Times New Roman', 'Arial Unicode MS', 'Lucida Sans Unicode', sans-serif;
}

/* 头像容器居中优化 */
.avatar-container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.avatar-container img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.avatar-container i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}