.concept-section {
    padding: 2rem 0 1rem 0;
    background-color: var(--color-bg-white);
    text-align: center;
    border-top: none;
    border-bottom: none;
    margin-top: -3px;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-bg-dark);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl) auto;
    padding: 0 1rem;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.concept-pillar {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
}

.concept-img {
    width: 200px;
    height: 200px;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-normal);
}

.concept-pillar:hover .concept-img {
    transform: scale(1.05);
}

.concept-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

.concept-pillar h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-bg-dark);
    margin-bottom: 0.6rem;
    text-transform: none;
    letter-spacing: normal;
}

.concept-pillar p {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    max-width: 320px;
}

.concept-dots {
    display: none;
}

@media (min-width: 768px) and (max-width: 1024px) {
    .concept-grid {
        gap: 1.5rem;
        padding: 0 24px;
    }

    .concept-pillar {
        padding: 0.75rem;
    }

    .concept-img {
        width: 150px;
        height: 150px;
        margin-bottom: 1rem;
    }

    .concept-pillar h3 {
        font-size: 1.3rem;
        margin-bottom: 0.4rem;
    }

    .concept-pillar p {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .section-title {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 767px) {
    .concept-grid {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        gap: 1.5rem;
        padding: 0 24px 1.5rem 24px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .concept-grid::-webkit-scrollbar {
        display: none;
    }

    .concept-pillar {
        flex: 0 0 100%;
        scroll-snap-align: center;
        padding: 0.75rem;
        background-color: transparent;
        border-radius: 0;
        box-shadow: none;
        border: none;
    }

    .concept-pillar .concept-img {
        width: 160px;
        height: 160px;
        margin-bottom: 0.75rem;
    }

    .concept-pillar h3 {
        font-size: 1.3rem;
        margin-bottom: 0.4rem;
    }

    .concept-pillar p {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .concept-dots {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 0.5rem;
        margin-top: 1rem;
        margin-bottom: 1rem;
    }

    .concept-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background-color: #d1d5db;
        cursor: pointer;
        transition: all var(--transition-normal);
    }

    .concept-dot.active {
        background-color: var(--color-brand-yellow);
        width: 24px;
        border-radius: 4px;
        transform: scale(1.1);
    }
}

.highlight-marker {
    background-color: var(--color-brand-yellow);
    color: var(--color-bg-dark);
    padding: 2px 8px;
    border-radius: 12px;
    display: inline-block;
    line-height: 1.2;
    font-weight: inherit;
    box-shadow: inset 0 -6px 0 rgba(255, 194, 68, 0.5);
}