.cf-card__rich-body {
    padding: 8px 22px 16px;
    color: var(--color-ink);
    line-height: 1.65;
    font-size: 15px;
    word-break: break-word;
}
.cf-card__rich-body h2 {
    font-size: 21px;
    font-weight: var(--fw-extrabold);
    color: var(--color-ink);
    margin: 18px 0 8px;
    line-height: 1.3;
}
.cf-card__rich-body h2:first-child { margin-top: 4px; }
.cf-card__rich-body h3 {
    font-size: 17px;
    font-weight: var(--fw-bold);
    color: var(--color-ink);
    margin: 16px 0 6px;
    line-height: 1.35;
}
.cf-card__rich-body p { margin: 0 0 10px; }
.cf-card__rich-body p:last-child { margin-bottom: 0; }
.cf-card__rich-body a {
    color: var(--color-primary);
    text-decoration: underline;
    font-weight: var(--fw-bold);
    text-underline-offset: 2px;
}
.cf-card__rich-body a:hover { color: var(--color-primary-hover); }
.cf-card__rich-body ul, .cf-card__rich-body ol {
    margin: 8px 0 12px;
    padding-left: 22px;
}
.cf-card__rich-body li { margin-bottom: 4px; }
.cf-card__rich-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: 12px 0;
    display: block;
    cursor: zoom-in;
    border: 1px solid var(--color-line);
}
.cf-card__rich-body blockquote {
    border-left: 3px solid var(--color-primary);
    padding: 6px 14px;
    color: var(--color-muted);
    margin: 10px 0;
    background: var(--color-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.cf-card__rich-body code {
    background: var(--color-soft);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--color-primary-deep);
}
.cf-card__rich-body pre {
    background: var(--color-soft);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.55;
    margin: 10px 0;
}
.cf-card__rich-body hr {
    border: 0;
    border-top: 1px solid var(--color-line);
    margin: 14px 0;
}

/* ─── Auto-link cho user plain posts ─────────────────────────────────── */
.cf-autolink {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    word-break: break-all;
}
.cf-autolink:hover { color: var(--color-primary-hover); }

/* ─── Image grid for text posts (admin announcements) ─────────────── */
.cf-card__images {
    display: grid;
    gap: 2px;
    margin: 0 18px 12px;
    border-radius: var(--radius-md);
    overflow: hidden;
}
.cf-card__images--1 { grid-template-columns: 1fr; }
.cf-card__images--2 { grid-template-columns: 1fr 1fr; }
.cf-card__images--3 { grid-template-columns: 1fr 1fr 1fr; }
.cf-card__images--4 { grid-template-columns: 1fr 1fr; }
.cf-card__image {
    display: block;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--color-soft);
    transition: opacity var(--dur-fast) var(--ease);
}
.cf-card__image:hover { opacity: .92; }
.cf-card__image img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
}
.cf-card__images--1 .cf-card__image { aspect-ratio: 16/10; }
@media (max-width: 640px) {
    .cf-card__images--3 { grid-template-columns: 1fr 1fr; }
    .cf-card__images--3 .cf-card__image:first-child { grid-column: 1 / -1; }
}

/* ─── Grammar-list post: curriculum-style layout ──────────────────── */
.cf-card.cf-card--text .cf-gm-post-body {
    background: transparent;
    padding: 4px 18px 8px;
}
.cf-gm-post-intro {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    white-space: pre-line;
}
/* Kill huge gaps from double-newlines — keep paragraph spacing tight */
.cf-gm-post-intro br + br { display: none; }

/* Curriculum container */
.cf-gm-curriculum {
    margin: 8px 18px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.cf-gm-curriculum__head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 11px 16px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
}
.cf-gm-curriculum__title {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 12px; font-weight: var(--fw-extrabold);
    color: var(--color-ink);
    text-transform: uppercase; letter-spacing: .05em;
}
.cf-gm-curriculum__title i { color: var(--color-accent, #06B6D4); font-size: 12px; }
.cf-gm-curriculum__count {
    font-size: 11px; color: var(--color-muted); font-weight: var(--fw-semibold);
}

/* Level group */
.cf-gm-level + .cf-gm-level { border-top: 1px solid var(--color-line); }
.cf-gm-level__head {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px 6px;
}
.cf-gm-level__pill {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 22px; padding: 0 8px;
    background: color-mix(in srgb, var(--color-accent, #06B6D4) 14%, #fff);
    color: var(--color-accent-deep, var(--color-accent, #06B6D4));
    border-radius: var(--radius-sm);
    font-size: 11px; font-weight: var(--fw-extrabold);
    letter-spacing: .04em;
    font-variant-numeric: tabular-nums;
}
.cf-gm-level__name {
    font-size: 12.5px; font-weight: var(--fw-bold);
    color: var(--color-ink);
}
.cf-gm-level__count {
    margin-left: auto;
    font-size: 11px; color: var(--color-muted);
    font-weight: var(--fw-semibold);
}
.cf-gm-level__list {
    list-style: none; padding: 0; margin: 0;
}
.cf-gm-level__list li { margin: 0; }

/* Topic item — list-row style */
.cf-gm-item {
    display: flex; align-items: center; gap: 12px;
    padding: 9px 16px;
    text-decoration: none; color: inherit;
    border-top: 1px solid color-mix(in srgb, var(--color-line) 60%, transparent);
    transition: background var(--dur-fast) var(--ease);
}
.cf-gm-level__list li:first-child .cf-gm-item { border-top-color: var(--color-line); }
.cf-gm-item:hover {
    background: var(--color-bg);
}
.cf-gm-item:hover .cf-gm-item__arrow {
    color: var(--color-accent, #06B6D4);
    transform: translateX(2px);
}
.cf-gm-item__num {
    font-variant-numeric: tabular-nums;
    font-family: var(--font-mono, 'SF Mono', Menlo, monospace);
    font-size: 11.5px; font-weight: var(--fw-bold);
    color: var(--color-mute2);
    flex-shrink: 0;
    min-width: 24px;
    letter-spacing: .02em;
}
.cf-gm-item:hover .cf-gm-item__num { color: var(--color-accent, #06B6D4); }
.cf-gm-item__main {
    flex: 1; min-width: 0;
    display: flex; align-items: baseline; gap: 8px;
    overflow: hidden;
}
.cf-gm-item__title {
    font-size: 13.5px; font-weight: var(--fw-semibold);
    color: var(--color-ink);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    flex: 0 1 auto;
    letter-spacing: -.005em;
}
.cf-gm-item__cat {
    font-size: 11.5px; color: var(--color-muted);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    flex-shrink: 0;
}
.cf-gm-item__cat::before {
    content: '·'; margin-right: 5px; color: var(--color-mute2); opacity: .6;
}
.cf-gm-item__arrow {
    color: var(--color-mute2); font-size: 10px;
    flex-shrink: 0;
    transition: transform var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

@media (max-width: 640px) {
    .cf-gm-curriculum { margin: 8px 12px 12px; }
    .cf-gm-curriculum__head { padding: 10px 12px; }
    .cf-gm-level__head { padding: 9px 12px 5px; }
    .cf-gm-item { padding: 9px 12px; gap: 10px; }
    .cf-gm-item__main { flex-wrap: wrap; gap: 2px 8px; }
    .cf-gm-item__title { white-space: normal; }
    .cf-gm-item__cat { font-size: 11px; }
    .cf-gm-item__cat::before { display: none; }
}

/* ─── Shadow video playlist (admin curated list) ─────────────────── */
.cf-sv-playlist {
    margin: 8px 18px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.cf-sv-playlist__head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 11px 16px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
}
.cf-sv-playlist__title {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: 12px; font-weight: var(--fw-extrabold);
    color: var(--color-ink);
    text-transform: uppercase; letter-spacing: .05em;
}
.cf-sv-playlist__title i { color: var(--color-warning, #F59E0B); font-size: 12px; }
.cf-sv-playlist__count {
    font-size: 11px; color: var(--color-muted); font-weight: var(--fw-semibold);
}

.cf-sv-level + .cf-sv-level { border-top: 1px solid var(--color-line); }
.cf-sv-level__head {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px 6px;
}
.cf-sv-level__pill {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 22px; padding: 0 8px;
    background: color-mix(in srgb, var(--color-warning, #F59E0B) 14%, #fff);
    color: var(--color-warning, #F59E0B);
    border-radius: var(--radius-sm);
    font-size: 11px; font-weight: var(--fw-extrabold);
    letter-spacing: .04em;
    font-variant-numeric: tabular-nums;
}
.cf-sv-level__name {
    font-size: 12.5px; font-weight: var(--fw-bold);
    color: var(--color-ink);
}
.cf-sv-level__count {
    margin-left: auto;
    font-size: 11px; color: var(--color-muted);
    font-weight: var(--fw-semibold);
}
.cf-sv-level__list { list-style: none; padding: 0; margin: 0; }

/* Row item — with thumbnail */
.cf-sv-row[data-collapsed="1"] { display: none; }
.cf-sv-playlist.is-expanded .cf-sv-row[data-collapsed="1"] { display: block; }

.cf-sv-item {
    display: flex; align-items: center; gap: 12px;
    padding: 9px 16px;
    text-decoration: none; color: inherit;
    border-top: 1px solid color-mix(in srgb, var(--color-line) 60%, transparent);
    transition: background var(--dur-fast) var(--ease);
}
.cf-sv-level__list li:first-child .cf-sv-item { border-top-color: var(--color-line); }
.cf-sv-item:hover { background: var(--color-bg); }
.cf-sv-item:hover .cf-sv-item__num { color: var(--color-warning, #F59E0B); }
.cf-sv-item:hover .cf-sv-item__arrow { color: var(--color-warning, #F59E0B); transform: scale(1.1); }

.cf-sv-item__num {
    font-variant-numeric: tabular-nums;
    font-family: var(--font-mono, 'SF Mono', Menlo, monospace);
    font-size: 11.5px; font-weight: var(--fw-bold);
    color: var(--color-mute2);
    flex-shrink: 0;
    min-width: 24px;
    letter-spacing: .02em;
}
.cf-sv-item__thumb {
    width: 64px; height: 38px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-soft);
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    position: relative;
}
.cf-sv-item__thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
.cf-sv-item__thumb--ph {
    color: var(--color-mute2); font-size: 14px;
}
.cf-sv-item__main {
    flex: 1; min-width: 0;
    display: flex; flex-direction: column; gap: 2px;
    overflow: hidden;
}
.cf-sv-item__title {
    font-size: 13.5px; font-weight: var(--fw-semibold);
    color: var(--color-ink);
    overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
    letter-spacing: -.005em;
}
.cf-sv-item__meta {
    font-size: 11.5px; color: var(--color-muted);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cf-sv-item__meta i { font-size: 10px; margin: 0 1px; }
.cf-sv-item__arrow {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--color-soft); color: var(--color-mute2);
    display: flex; align-items: center; justify-content: center;
    font-size: 10px;
    flex-shrink: 0;
    transition: all var(--dur-fast) var(--ease);
}

/* "Xem thêm" button */
.cf-sv-playlist__more {
    display: flex; align-items: center; justify-content: center; gap: 7px;
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 0; border-top: 1px solid var(--color-line);
    color: var(--color-text);
    font-size: 12.5px; font-weight: var(--fw-bold);
    cursor: pointer;
    font-family: inherit;
    transition: background var(--dur-fast) var(--ease);
}
.cf-sv-playlist__more:hover {
    background: color-mix(in srgb, var(--color-warning, #F59E0B) 8%, var(--color-bg));
    color: var(--color-warning, #F59E0B);
}
.cf-sv-playlist__more i { font-size: 10px; }

@media (max-width: 640px) {
    .cf-sv-playlist { margin: 8px 12px 12px; }
    .cf-sv-playlist__head { padding: 10px 12px; }
    .cf-sv-level__head { padding: 9px 12px 5px; }
    .cf-sv-item { padding: 9px 12px; gap: 10px; }
    .cf-sv-item__thumb { width: 56px; height: 34px; }
    .cf-sv-item__title { font-size: 13px; }
    .cf-sv-item__meta { font-size: 11px; }
    .cf-sv-item__arrow { width: 26px; height: 26px; font-size: 9px; }
}