.reading-box {
    border: 1px solid #1877f2;
    border-radius: 4px;
    margin: 16px 0;
    background-color: #fff;
    box-sizing: border-box;
    overflow: hidden;
}

.reading-box-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    cursor: pointer;
    user-select: none;
}

.reading-box-header.is-open {
    border-bottom: 1px solid #e2e8f0;
}

.reading-box-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.reading-box-icon {
    width: 36px;
    height: 36px;
    border: 1.5px solid #1877f2;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
}

.reading-box-icon svg {
    display: block;
}

.reading-box-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.reading-box-title {
    color: #1877f2;
    font-weight: 700;
    font-size: 15px;
    line-height: 1.3;
}

.reading-box-subtitle {
    color: #64748b;
    font-size: 13.5px;
    line-height: 1.4;
    margin-top: 2px;
}

.reading-toggle-text {
    color: #1877f2;
    font-size: 14px !important;
    font-weight: 400;
    line-height: 1;
    white-space: nowrap;
    margin-left: 10px;
}

.reading-box-header.is-open .reading-toggle-text {
    font-size: 14px !important;
    font-weight: 500;
}

.reading-box-body {
    display: none;
    padding: 16px 20px;
}

.reading-box-body .article-inside-title {
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.reading-box-body .article-inside-content {
    font-size: 15px;
    line-height: 1.7;
}

.reading-box-collapse-bottom {
    text-align: center;
    margin-top: 20px;
    color: #1877f2;
    font-weight: 700;
    font-size: 14px !important;
    cursor: pointer;
    user-select: none;
}