.communication-types-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
        margin: 24px 0;
    }

    .communication-type-card {
        background: var(--color-card-background);
        border: 1px solid var(--color-border);
        border-radius: 12px;
        overflow: hidden;
        transition: box-shadow 0.2s, transform 0.2s;
        display: flex;
        flex-direction: column;
    }

    .communication-type-card:hover {
        box-shadow: var(--shadow-card-hover, 0 4px 12px rgba(0,0,0,0.1));
        transform: translateY(-2px);
    }

    .communication-type-icon-wrapper {
        width: 100%;
        height: 100px;
        background: linear-gradient(135deg, var(--color-background) 0%, var(--color-border) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
    }

    .communication-type-icon {
        max-width: 60px;
        max-height: 60px;
        object-fit: contain;
    }

    .communication-type-icon-placeholder {
        width: 60px;
        height: 60px;
        background: var(--color-border-light);
        border-radius: var(--border-radius-sm);
    }

    .communication-type-info {
        padding: 16px;
    }

    .communication-type-code {
        display: inline-block;
        font-family: monospace;
        font-size: var(--font-size-xxs, 11px);
        font-weight: var(--font-weight-semibold, 600);
        color: var(--color-text-muted);
        background: var(--color-background);
        padding: 3px var(--spacing-sm);
        border-radius: 4px;
        margin-bottom: var(--spacing-sm);
    }

    .communication-type-name {
        font-size: var(--font-size-base, 16px);
        font-weight: var(--font-weight-semibold, 600);
        color: var(--color-secondary);
        margin: 0 0 var(--spacing-sm) 0;
    }

    .communication-type-description {
        font-size: var(--font-size-xs, 12px);
        color: var(--color-text-muted);
        margin: 0;
        line-height: 1.4;
    }

    .feature-list {
        list-style: none;
        padding: 0;
        margin: 16px 0;
    }

    .feature-list li {
        position: relative;
        padding-left: 24px;
        margin-bottom: 10px;
        font-size: var(--font-size-sm, 14px);
        color: var(--color-text);
    }

    .feature-list li::before {
        content: '✓';
        position: absolute;
        left: 0;
        color: var(--color-success);
        font-weight: var(--font-weight-semibold, 600);
    }

    .code-block {
        background: var(--color-background);
        border: 1px solid var(--color-border-light);
        border-radius: var(--border-radius-sm);
        padding: 16px;
        font-family: monospace;
        font-size: var(--font-size-xs, 12px);
        overflow-x: auto;
        white-space: pre;
        margin: 16px 0;
    }

    .empty-message {
        grid-column: 1 / -1;
        text-align: center;
        color: var(--color-text-muted);
        padding: 40px;
    }

    @media (max-width: 575px) {
        .communication-types-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 400px) {
        .communication-types-grid {
            grid-template-columns: 1fr;
        }
    }