/* ヒーローセクション用のスタイル */
.hero-section,
.guidelines-section {
    position: relative;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}

.hero-section {
    background: url('../img/index_vision.jpg') center/cover no-repeat;
    height: 60vh;
}

.guidelines-section {
    background: url('../img/index_value.jpg') center/cover no-repeat;
    min-height: 60vh;
}

.hero-overlay,
.guidelines-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, .5);
}

.hero-content,
.guidelines-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    /* Vision */
    .hero-content {
        position: relative;
        transform: none;
        text-align: center;
    }

    /* Value */
    .guidelines-content {
        position: relative;
        transform: none;
        text-align: center;
    }

    .hero-section,
    .guidelines-section {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .hero-content .display-4,
    .guidelines-section .display-4 {
        font-size: 2rem;
    }

    .hero-content .display-5,
    .guidelines-section .col-md-4 h4 {
        font-size: 1rem;
    }

    .hero-content .lead,
    .guidelines-section p {
        font-size: 0.8rem;
    }
}