main {
    width: 90%;
    margin: 0 auto;
    max-width: 1200px;
}

/* ヒーローセクション */
.hero-section {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: #f9f9f9;
    padding: 20px 0;
}

.hero-section__content {
    max-width: 800px;
    width: 90%;
}

.hero-section__image {
    width: 100%;
    max-width: 1000px;
    height: auto;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.hero-section__title {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
    line-height: 1.4;
}

.hero-section__subtitle {
    font-size: 1.2rem;
    font-weight: normal;
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* おすすめセクション */
.recommend-section {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    margin: 40px 0;
    text-align: center;
}

.recommend-section__title {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.recommend-section__list {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
    list-style: none;
}

.recommend-section__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 30%;
    max-width: 300px;
    text-align: center;
}

.recommend-section__image {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin-bottom: 10px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.recommend-section__text {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.4;
}

/* セミナー紹介セクション */
.intro-section {
    background: #fff8e1;
    /* 柔らかい印象の背景色 */
    padding: 20px;
    margin: 40px 0;
    border-radius: 10px;
}

.intro-section__title {
    text-align: center;
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
}

.intro-section__text {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 15px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

/* セミナーの特徴セクション */
.features-section {
    background: #e8f5e9;
    padding: 20px;
    margin: 40px 0;
    border-radius: 10px;
}

.features-section img {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    margin-bottom: 20px;
}

.features-section__title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.features-section__text {
    text-align: center;
    font-size: 1.2rem;
}

.features-section__list {
    list-style: decimal;
    padding-left: 40px;
    margin: 0 auto;
    max-width: 50%;
    line-height: 2;
}

/* セミナー内容セクション */
.schedule-section {
    margin: 40px 0;
    padding: 20px;
    background: #f9fbe7;
    border-radius: 10px;
}

.schedule-section img {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    margin-bottom: 20px;
}

.schedule-section__title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.schedule-section__list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 50%;
}

.schedule-section__list li {
    font-size: 1.2rem;
    margin: 10px 0;
}

/* 開催概要セクション */
.details-section {
    padding: 20px;
    background: #e3f2fd;
    border-radius: 10px;
    margin: 40px 0;
}

.details-section__title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 20px;
}

.details-section__list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 50%;
    line-height: 2;
}

.details-section__list li {
    font-size: 1.1rem;
    margin: 10px 0;
}

.details-section__payment {
    margin-top: 10px;
    padding-left: 20px;
    list-style-type: disc;
    font-size: 0.95rem;
    color: #555;
}

.details-section__payment li {
    margin-bottom: 5px;
    line-height: 1.5;
}

/* 申し込みセクション */
.application-section {
    text-align: center;
    margin: 40px 0;
    background: #ffebee;
    padding: 20px;
    border-radius: 10px;
}

.application-section__title {
    font-size: 2rem;
    margin-bottom: 10px;
}

.application-section__text {
    font-size: 1.2rem;
    margin: 10px 0;
}

.application-section__button {
    display: inline-block;
    background: #d32f2f;
    color: #fff;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.application-section__button:hover {
    background: #b71c1c;
    transform: translateY(-3px);
}

.application-section__button:active {
    background: #9a0007;
    transform: translateY(0);
}


/* 主催者メッセージセクション */
.message-section {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    margin: 40px 0;
}

.message-section__content {
    display: flex;
    gap: 20px;
    max-width: 1000px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.message-section__image {
    width: 300px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

.message-section__text-content {
    flex: 1;
}

.message-section__title {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.message-section__text {
    font-size: 1.2rem;
    margin-bottom: 10px;
    line-height: 1.6;
}

@media screen and (max-width: 1024px) and (max-height: 1366px) {
    .features-section__list {
        max-width: 60%;
    }

    .schedule-section__list {
        max-width: 60%;
    }

    .details-section__list {
        max-width: 60%;
    }
}

@media screen and (min-width: 431px) and (max-width: 960px) {
    .hero-section__title {
        font-size: 1.8rem;
    }

    .features-section__list {
        max-width: 80%;
    }

    .schedule-section__list {
        max-width: 80%;
    }

    .details-section__list {
        max-width: 80%;
    }
}

@media screen and (max-width: 430px) {
    .hero-section__title {
        font-size: 23px;
    }

    .hero-section__subtitle {
        font-size: 20px;
    }

    .recommend-section__item {
        width: 100%;
        max-width: none;
    }

    .recommend-section__title {
        font-size: 1.5rem;
    }

    .features-section__list {
        max-width: 100%;
    }

    .features-section__text {
        font-size: 1rem;
    }

    .schedule-section__list {
        max-width: 100%;
    }

    .details-section__list {
        max-width: 100%;
    }

    .application-section__title {
        font-size: 1.8rem;
    }

    .message-section__content {
        flex-direction: column;
        text-align: center;
    }

    .message-section__image {
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .message-section__title {
        font-size: 1.6rem;
    }
}