.section-title-box {
    padding: 24px 16px 10px;
}

.v3-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 4px;
}

.v3-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}


/* Channel Grid */
.ch-grid {
    padding: 0 16px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.ch-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ch-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.ch-thumb-box {
    position: relative;
    width: 100%;
    padding-bottom: 100%; /* 1:1 Aspect Ratio */
    border-radius: 50%; /* Circle thumbnails for channels */
    overflow: hidden;
    background: #f0f0f0;
}

.ch-thumb-box img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cert-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--primary-color);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 10px;
    border: 2px solid var(--bg-card);
}

.ch-info {
    text-align: center;
}

.ch-info h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ch-meta {
    font-size: 11px;
    color: var(--text-dim);
}

/* Dark mode adjustments */
body.dark-theme .ch-card {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* Desktop Responsive */
@media (min-width: 768px) {
    .ch-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 24px;
        padding: 0 32px;
    }
    
    .section-title-box {
        padding: 40px 32px 20px;
    }
    
    .v3-title {
        font-size: 28px;
    }
}