.column {
    text-align: center;
    padding: 15px 10px;
}
.column-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 10px;
    background: linear-gradient(135deg, #f0f0f0, #e8e8e8);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    font-size: 12px;
}
.column-icon.icon-image a {
    display: contents;
    color: inherit;
    text-decoration: none;
}
.column-icon.icon-firstchar {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    /* background 由内联 style 设定，支持纯色或渐变 */
}
.column-icon.icon-firstchar a {
    display: contents;
    color: inherit;
    text-decoration: none;
}
.column-title {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 5px;
}
.column-desc {
    font-size: 12px;
    color: #888;
}