.design-doc-toc {
    --ddtoc-background: #01002c;
    --ddtoc-card: #0d1a4d;
    --ddtoc-card-hover: #12245f;
    --ddtoc-tab: #173067;
    --ddtoc-text: #ffffff;
    --ddtoc-link: #8ec5ff;

    counter-reset: ddtoc-section;
    box-sizing: border-box;
    margin: 1.5rem 0 2.25rem;
    padding: 0;
    background: var(--ddtoc-background);
}

.design-doc-toc *,
.design-doc-toc *::before,
.design-doc-toc *::after {
    box-sizing: border-box;
}

.design-doc-toc__title {
    margin: 0 0 1rem !important;
    padding: 0 0 .45rem;
    color: var(--ddtoc-text) !important;
    border-bottom: 2px solid #2d62a9;
    font-size: clamp(1.65rem, 3vw, 2.3rem);
    line-height: 1.1;
}

.design-doc-toc__item {
    counter-increment: ddtoc-section;
    display: grid;
    grid-template-columns: 4.25rem minmax(0, 1fr);
    margin: 0 0 .7rem !important;
    padding: 0 !important;
    background: var(--ddtoc-card);
    border-radius: 12px;
    overflow: hidden;
}

.design-doc-toc__item:last-of-type {
    margin-bottom: 0 !important;
}

.design-doc-toc__item:hover {
    background: var(--ddtoc-card-hover);
}

.design-doc-toc__tab {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 4.15rem;
    margin: 0 !important;
    background: var(--ddtoc-tab);
    border-radius: 12px 0 0 12px;
    color: var(--ddtoc-text);
    font-size: 1.55rem;
    font-weight: 700;
    line-height: 1;
}

.design-doc-toc__tab::before {
    content: counter(ddtoc-section, decimal-leading-zero);
}

.design-doc-toc__content {
    min-width: 0;
    margin: 0 !important;
    padding: .65rem 1rem .7rem !important;
}

.design-doc-toc__heading {
    margin: 0 0 .18rem !important;
    color: var(--ddtoc-text) !important;
    font-size: 1.08rem;
    font-weight: 700;
    line-height: 1.25;
}

.design-doc-toc__heading a {
    color: var(--ddtoc-text) !important;
    text-decoration: none !important;
}

.design-doc-toc__subsections {
    margin: 0 !important;
    color: var(--ddtoc-text);
    font-size: .95rem;
    line-height: 1.45;
}

.design-doc-toc__subsection {
    display: inline-block;
    white-space: nowrap;
}

.design-doc-toc__subsection:not(:last-child)::after {
    content: "·";
    display: inline-block;
    margin: 0 .4rem;
    color: rgba(255,255,255,.8);
}

.design-doc-toc__subsection a {
    color: var(--ddtoc-link) !important;
    text-decoration: underline !important;
    text-underline-offset: .14em;
    text-decoration-thickness: 1px;
}

.design-doc-toc a:hover {
    text-decoration-thickness: 2px !important;
}

/* Editor-only add buttons are hidden on the front end. */
.design-doc-toc__add {
    display: none;
}

@media (max-width: 600px) {
    .design-doc-toc {
        margin: 1.25rem 0 2rem;
    }

    .design-doc-toc__item {
        grid-template-columns: 3.25rem minmax(0, 1fr);
        border-radius: 10px;
        margin-bottom: .6rem !important;
    }

    .design-doc-toc__tab {
        min-height: 100%;
        border-radius: 10px 0 0 10px;
        font-size: 1.15rem;
    }

    .design-doc-toc__content {
        padding: .55rem .75rem .6rem !important;
    }

    .design-doc-toc__heading {
        font-size: 1rem;
    }

    .design-doc-toc__subsections {
        font-size: .9rem;
        line-height: 1.4;
    }

    .design-doc-toc__subsection {
        white-space: normal;
        max-width: 100%;
    }
}