/* ================================================================
   Content Outline — bkbg-co-*
   ================================================================ */

.bkbg-co-block { box-sizing: border-box; }

/* ── Outline title / intro ───────────────────────────────────── */
.bkbg-co-header { border-bottom: 1px solid; }
.bkbg-co-title {
    font-family: var(--bkco-title-font-family, inherit);
    font-size: var(--bkco-title-font-size-d, var(--bkco-title-font-size, 22px));
    font-weight: var(--bkco-title-font-weight, 800);
    font-style: var(--bkco-title-font-style, normal);
    text-transform: var(--bkco-title-text-transform, none);
    text-decoration: var(--bkco-title-text-decoration, none);
    line-height: var(--bkco-title-line-height-d, var(--bkco-title-line-height, 1.3));
    letter-spacing: var(--bkco-title-letter-spacing-d, var(--bkco-title-letter-spacing, normal));
    word-spacing: var(--bkco-title-word-spacing-d, var(--bkco-title-word-spacing, normal));
    margin: 0 0 6px;
}
.bkbg-co-intro  { margin: 0; line-height: 1.6; }

/* ── Sections list ───────────────────────────────────────────── */
.bkbg-co-sections { display: flex; flex-direction: column; }

/* ── Individual section card ─────────────────────────────────── */
.bkbg-co-section { overflow: hidden; }

.bkbg-co-section.is-card {
    transition: box-shadow .15s, transform .1s;
}
.bkbg-co-section.is-card:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,.07); }

/* ── Section header row ──────────────────────────────────────── */
.bkbg-co-section-head {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: default;
}

.bkbg-co-collapsible .bkbg-co-section-head { cursor: pointer; }

.bkbg-co-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 12px;
    flex-shrink: 0;
    line-height: 1;
}

.bkbg-co-section-info { flex: 1; min-width: 0; }

.bkbg-co-section-title {
    font-family: var(--bkco-sec-font-family, inherit);
    font-size: var(--bkco-sec-font-size-d, var(--bkco-sec-font-size, 16px));
    font-weight: var(--bkco-sec-font-weight, 700);
    font-style: var(--bkco-sec-font-style, normal);
    text-transform: var(--bkco-sec-text-transform, none);
    text-decoration: var(--bkco-sec-text-decoration, none);
    line-height: var(--bkco-sec-line-height-d, var(--bkco-sec-line-height, 1.3));
    letter-spacing: var(--bkco-sec-letter-spacing-d, var(--bkco-sec-letter-spacing, normal));
    word-spacing: var(--bkco-sec-word-spacing-d, var(--bkco-sec-word-spacing, normal));
    margin: 0;
}

.bkbg-co-section-desc {
    font-size: 12px;
    margin: 2px 0 0;
    line-height: 1.4;
}

.bkbg-co-read-time {
    font-size: 11px;
    font-weight: 500;
    flex-shrink: 0;
    white-space: nowrap;
}

/* ── Points list ─────────────────────────────────────────────── */
.bkbg-co-points { list-style: none; margin: 0; padding: 0; }

.bkbg-co-point {
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1.5;
}

.bkbg-co-arrow { font-size: 10px; flex-shrink: 0; }
.bkbg-co-point-text { flex: 1; }

.bkbg-co-status {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 100px;
    flex-shrink: 0;
    white-space: nowrap;
}

/* ── Collapsible toggle ──────────────────────────────────────── */
.bkbg-co-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
    padding: 0;
    font-size: 14px;
    flex-shrink: 0;
    opacity: .5;
    transition: opacity .12s, transform .15s;
}
.bkbg-co-toggle.is-open { transform: rotate(90deg); opacity: 1; }

.bkbg-co-body { overflow: hidden; transition: max-height .25s ease; }

/* ── Responsive typography ──────────────────────────────────── */
@media (max-width: 1024px) {
    .bkbg-co-title {
        font-size: var(--bkco-title-font-size-t, var(--bkco-title-font-size-d, var(--bkco-title-font-size, 22px)));
        line-height: var(--bkco-title-line-height-t, var(--bkco-title-line-height-d, var(--bkco-title-line-height, 1.3)));
        letter-spacing: var(--bkco-title-letter-spacing-t, var(--bkco-title-letter-spacing-d, var(--bkco-title-letter-spacing, normal)));
        word-spacing: var(--bkco-title-word-spacing-t, var(--bkco-title-word-spacing-d, var(--bkco-title-word-spacing, normal)));
    }
    .bkbg-co-section-title {
        font-size: var(--bkco-sec-font-size-t, var(--bkco-sec-font-size-d, var(--bkco-sec-font-size, 16px)));
        line-height: var(--bkco-sec-line-height-t, var(--bkco-sec-line-height-d, var(--bkco-sec-line-height, 1.3)));
        letter-spacing: var(--bkco-sec-letter-spacing-t, var(--bkco-sec-letter-spacing-d, var(--bkco-sec-letter-spacing, normal)));
        word-spacing: var(--bkco-sec-word-spacing-t, var(--bkco-sec-word-spacing-d, var(--bkco-sec-word-spacing, normal)));
    }
}
@media (max-width: 767px) {
    .bkbg-co-title {
        font-size: var(--bkco-title-font-size-m, var(--bkco-title-font-size-t, var(--bkco-title-font-size-d, var(--bkco-title-font-size, 22px))));
        line-height: var(--bkco-title-line-height-m, var(--bkco-title-line-height-t, var(--bkco-title-line-height-d, var(--bkco-title-line-height, 1.3))));
        letter-spacing: var(--bkco-title-letter-spacing-m, var(--bkco-title-letter-spacing-t, var(--bkco-title-letter-spacing-d, var(--bkco-title-letter-spacing, normal))));
        word-spacing: var(--bkco-title-word-spacing-m, var(--bkco-title-word-spacing-t, var(--bkco-title-word-spacing-d, var(--bkco-title-word-spacing, normal))));
    }
    .bkbg-co-section-title {
        font-size: var(--bkco-sec-font-size-m, var(--bkco-sec-font-size-t, var(--bkco-sec-font-size-d, var(--bkco-sec-font-size, 16px))));
        line-height: var(--bkco-sec-line-height-m, var(--bkco-sec-line-height-t, var(--bkco-sec-line-height-d, var(--bkco-sec-line-height, 1.3))));
        letter-spacing: var(--bkco-sec-letter-spacing-m, var(--bkco-sec-letter-spacing-t, var(--bkco-sec-letter-spacing-d, var(--bkco-sec-letter-spacing, normal))));
        word-spacing: var(--bkco-sec-word-spacing-m, var(--bkco-sec-word-spacing-t, var(--bkco-sec-word-spacing-d, var(--bkco-sec-word-spacing, normal))));
    }
}

/* ── Progress summary bar ────────────────────────────────────── */
.bkbg-co-progress-bar {
    height: 4px;
    border-radius: 2px;
    background: #e2e8f0;
    overflow: hidden;
    margin-top: 20px;
}
.bkbg-co-progress-fill {
    height: 100%;
    border-radius: 2px;
    transition: width .4s ease;
}