.external-resources-list-section {
    background: var(--mtw-off-white);
    padding: 88px 0 104px;
}

.external-resources-list-container {
    width: min(1480px, calc(100% - 64px));
    margin: 0 auto;
}

.external-resources-list-header {
    max-width: 880px;
    margin-bottom: 44px;
    padding-bottom: 34px;
    border-bottom: 1px solid var(--mtw-border);
}

.external-resources-list-header h2 {
    margin-bottom: 18px;
}

.external-resources-list-header p:not(.kicker) {
    color: var(--mtw-muted);
    font-size: 1.05rem;
    line-height: 1.75;
}

/* Groups */

.external-resource-groups {
    display: grid;
    gap: 34px;
}

.external-resource-group {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
}

.external-resource-group-heading {
    position: sticky;
    top: 130px;
    display: grid;
    gap: 14px;
    background: var(--mtw-white);
    border: 1px solid var(--mtw-border);
    border-top: 4px solid var(--mtw-red);
    border-radius: var(--radius-md);
    padding: 28px;
}

.external-resource-group-number {
    color: var(--mtw-red);
    font-size: 0.82rem;
    font-weight: 900;
    letter-spacing: 0.1em;
}

.external-resource-group-heading h3 {
    font-size: clamp(1.45rem, 1.8vw, 2rem);
    line-height: 1.08;
}

/* Cards */

.external-resource-cards {
    display: grid;
    gap: 18px;
}

.external-resource-card {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 30px;
    align-items: center;
    background: var(--mtw-white);
    border: 1px solid var(--mtw-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    overflow: hidden;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.external-resource-card::before {
    content: "";
    position: absolute;
    left: 32px;
    top: 0;
    width: 88px;
    height: 4px;
    background: var(--mtw-red);
}

.external-resource-card:hover {
    border-color: var(--mtw-red);
    box-shadow: var(--shadow-soft);
    transform: translateY(-2px);
}

.external-resource-card-content {
    min-width: 0;
}

.external-resource-card h4 {
    max-width: 900px;
    margin-bottom: 12px;
    font-size: clamp(1.35rem, 1.55vw, 1.85rem);
    line-height: 1.08;
}

.external-resource-card p {
    max-width: 940px;
    color: var(--mtw-muted);
    font-size: 0.98rem;
    line-height: 1.75;
}

.external-resource-button {
    white-space: nowrap;
}

/* Empty */

.external-resources-empty {
    display: grid;
    grid-template-columns: 5px 1fr;
    gap: 26px;
    align-items: center;
    max-width: 820px;
    background: var(--mtw-white);
    border: 1px solid var(--mtw-border);
    border-radius: var(--radius-md);
    padding: 32px;
}

.external-resources-empty-line {
    width: 5px;
    height: 100%;
    min-height: 88px;
    background: var(--mtw-red);
    border-radius: var(--radius-xs);
}

.external-resources-empty h3 {
    margin-bottom: 10px;
    font-size: clamp(1.35rem, 1.7vw, 1.75rem);
}

.external-resources-empty p {
    max-width: 620px;
    color: var(--mtw-muted);
}

/* Responsive */

@media (max-width: 1100px) {
    .external-resource-group {
        grid-template-columns: 1fr;
    }

    .external-resource-group-heading {
        position: static;
    }
}

@media (max-width: 900px) {
    .external-resources-list-container {
        width: min(100% - 32px, 1480px);
    }

    .external-resources-list-section {
        padding: 72px 0 88px;
    }

    .external-resources-list-header p:not(.kicker) {
        font-size: 1rem;
    }

    .external-resource-card {
        grid-template-columns: 1fr;
        align-items: start;
        padding: 28px;
    }

    .external-resource-card::before {
        left: 28px;
    }

    .external-resource-button {
        width: fit-content;
    }
}

@media (max-width: 620px) {
    .external-resource-group-heading,
    .external-resource-card {
        border-radius: var(--radius-md);
        padding: 24px;
    }

    .external-resource-card::before {
        left: 24px;
    }

    .external-resource-button {
        width: 100%;
    }

    .external-resources-empty {
        grid-template-columns: 1fr;
        gap: 18px;
        padding: 26px;
    }

    .external-resources-empty-line {
        width: 58px;
        height: 4px;
        min-height: 4px;
    }
}