/* =============================================
   DX副産物詳細セクション
   「DX効率化だけではない価値」の直下に追加
   3つの副産物（ペーパーレス/持続可能性/人材育成）
   ============================================= */

/* =============================================
   セクション全体
   ============================================= */

.dx-byproducts-detail {
    background: #F8FAFB;
    padding: 80px 0;
    position: relative;
}

.dx-byproducts-detail__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =============================================
   ヘッダー
   ============================================= */

.dx-byproducts-detail__header {
    text-align: center;
    margin-bottom: 60px;
}

.dx-byproducts-detail__subtitle {
    font-size: 18px;
    color: #475569;
    line-height: 1.7;
    margin: 0;
}

/* =============================================
   カードグリッド（3枚横並び）
   ============================================= */

.dx-byproducts-detail__cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

/* =============================================
   個別カード
   ============================================= */

.dx-byproduct-card {
    background: #FFFFFF;
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dx-byproduct-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* =============================================
   カードアイコン（上部）
   ============================================= */

.dx-byproduct-card__icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: #FFFFFF;
}

/* アイコン別の色 */
.dx-byproduct-card__icon--blue {
    background: linear-gradient(135deg, #4F8FE8, #3B7DD6);
}

.dx-byproduct-card__icon--green {
    background: linear-gradient(135deg, #5FCB9A, #48B882);
}

.dx-byproduct-card__icon--purple {
    background: linear-gradient(135deg, #A78BFA, #8B72D8);
}

/* =============================================
   カードラベル（英語表記）
   ============================================= */

.dx-byproduct-card__label {
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: #64748B;
    text-transform: uppercase;
    margin-bottom: 8px;
}

/* =============================================
   カードタイトル（日本語）
   ============================================= */

.dx-byproduct-card__title {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 20px;
    line-height: 1.4;
}

/* =============================================
   カード説明文
   ============================================= */

.dx-byproduct-card__description {
    font-size: 14px;
    color: #475569;
    line-height: 1.8;
    margin-bottom: 24px;
    text-align: left;
}

/* =============================================
   チェックリスト
   ============================================= */

.dx-byproduct-card__checklist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dx-byproduct-card__checklist li {
    font-size: 13px;
    color: #64748B;
    line-height: 1.6;
    padding-left: 24px;
    margin-bottom: 12px;
    position: relative;
}

.dx-byproduct-card__checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    font-weight: 700;
    font-size: 14px;
}

/* チェックマーク色（カード別） */
.dx-byproduct-card--blue .dx-byproduct-card__checklist li::before {
    color: #3B82F6;
}

.dx-byproduct-card--green .dx-byproduct-card__checklist li::before {
    color: #10B981;
}

.dx-byproduct-card--purple .dx-byproduct-card__checklist li::before {
    color: #8B5CF6;
}

/* =============================================
   レスポンシブ：タブレット
   ============================================= */

@media (max-width: 1024px) {
    .dx-byproducts-detail {
        padding: 60px 0;
    }

    .dx-byproducts-detail__header {
        margin-bottom: 48px;
    }

    .dx-byproducts-detail__cards {
        gap: 24px;
    }

    .dx-byproduct-card {
        padding: 32px 28px;
    }

    .dx-byproduct-card__icon {
        width: 72px;
        height: 72px;
        font-size: 28px;
        margin-bottom: 20px;
    }

    .dx-byproduct-card__title {
        font-size: 20px;
    }
}

/* =============================================
   レスポンシブ：モバイル
   ============================================= */

@media (max-width: 768px) {
    .dx-byproducts-detail {
        padding: 50px 0;
    }

    .dx-byproducts-detail__inner {
        padding: 0 16px;
    }

    .dx-byproducts-detail__header {
        margin-bottom: 40px;
    }

    .dx-byproducts-detail__subtitle {
        font-size: 16px;
    }

    .dx-byproducts-detail__cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .dx-byproduct-card {
        padding: 28px 24px;
    }

    .dx-byproduct-card__icon {
        width: 64px;
        height: 64px;
        font-size: 24px;
        margin-bottom: 16px;
    }

    .dx-byproduct-card__title {
        font-size: 18px;
        margin-bottom: 16px;
    }

    .dx-byproduct-card__description {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .dx-byproduct-card__checklist li {
        font-size: 12px;
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    .dx-byproduct-card {
        padding: 24px 20px;
    }

    .dx-byproduct-card__icon {
        width: 56px;
        height: 56px;
        font-size: 20px;
    }

    .dx-byproduct-card__title {
        font-size: 17px;
    }
}