/* tbbbk.com theme additions */

/* Manual ad slots */
.tb-ad {
    margin: 3.2rem 0;
    text-align: center;
}

.tb-ad::before {
    content: "广告";
    display: block;
    margin-bottom: 0.6rem;
    font-size: 1.2rem;
    color: var(--secondary-text-color, #999);
    letter-spacing: 0.1em;
}

.tb-ad-end {
    margin-top: 4.8rem;
}

/* Table of contents */
.tb-toc {
    margin: 0 0 3.2rem;
    padding: 1.6rem 2rem;
    border: 1px solid var(--light-gray-color, #e6e6e6);
    border-radius: 6px;
    font-size: 1.6rem;
}

.tb-toc summary {
    font-weight: 700;
    cursor: pointer;
}

.tb-toc ol {
    margin: 1.2rem 0 0;
    padding-left: 2rem;
}

.tb-toc li {
    margin: 0.4rem 0;
}

.tb-toc a {
    text-decoration: none;
}

/* Code copy button */
.gh-content pre.tb-has-copy {
    position: relative;
}

.tb-copy {
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    padding: 0.2rem 0.8rem;
    font-size: 1.2rem;
    line-height: 1.8;
    color: #fff;
    background: rgb(255 255 255 / 15%);
    border: 0;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.6;
}

.tb-copy:hover {
    opacity: 1;
}

/* Updated date */
.single-meta-updated {
    font-weight: 400;
}