@charset "utf-8";

/* === Industry Usecase Section === */
.industry_usecase_section {
    padding: 70px 20px;
    background-color: #e9eef2;
    position: relative;
    overflow: hidden;
}
.industry_usecase_section::before,
.industry_usecase_section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    z-index: 1;
    pointer-events: none;
}
.industry_usecase_section::before {
    width: 600px;
    height: 600px;
    background-color: #a0c4ff;
    top: -150px;
    left: -200px;
    transform: rotate(15deg);
}
.industry_usecase_section::after {
    width: 500px;
    height: 500px;
    background-color: #b2f7d2;
    bottom: -100px;
    right: -150px;
    transform: rotate(-25deg);
}

.industry_usecase_container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.industry_usecase_section_heading {
    text-align: center;
    margin-bottom: 40px;
}

.industry_usecase_main_title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 2.1em;
    font-weight: 700;
    color: #1a2b3c;
    margin-top: 0;
    margin-bottom: 15px;
}

.industry_usecase_subtitle {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1.05em;
    color: #4a5c6d;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.industry_usecase_list {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background-color: #d1d9e0;
    border: 1px solid #d1d9e0;
    border-radius: 8px;
    overflow: hidden;
}

.industry_usecase_item { /* details タグ */
    background-color: #f7f9fb;
}
.industry_usecase_item[open] > .industry_item_summary_trigger {
    background-color: #eff3f6; /* 開いている時のサマリー背景 */
}


/* summary タグ (トリガー部分) */
.industry_item_summary_trigger {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 20px 25px;
    cursor: pointer;
    transition: background-color 0.2s;
    position: relative;
    gap: 15px;
    list-style: none; /* Safari, Chrome でデフォルトマーカーを消す */
}
.industry_item_summary_trigger::-webkit-details-marker { /* Chrome, Safari */
    display: none;
}
.industry_item_summary_trigger::marker { /* Firefox (新しい構文) - 念のため */
   display: none;
}


.industry_item_summary_content {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    flex-grow: 1;
    min-width: 0;
}

.industry_item_icon_decorative {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    background-color: #d0e0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b78c7;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.industry_item_icon_decorative svg{
    width: 24px;
    height: 24px;
}

.industry_item_title_group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 0;
}

.industry_item_title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1.25em;
    font-weight: 600;
    color: #2c3e50;
    margin: 0;
    line-height: 1.3;
}

.industry_item_summary_text {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.9em;
    color: #5a6876;
    margin: 0;
    line-height: 1.5;
    word-break: break-word;
}

.industry_toggle_indicator {
    width: 20px;
    height: 20px;
    border-left: 2px solid #788aa3;
    border-bottom: 2px solid #788aa3;
    transform: rotate(-45deg);
    transition: transform 0.3s ease-out;
    flex-shrink: 0;
    margin-top: 5px;
}

/* details[open] の時のインジケータの向き */
.industry_usecase_item[open] > .industry_item_summary_trigger .industry_toggle_indicator {
    transform: rotate(135deg);
}

/* 詳細コンテンツのスタイル */
.industry_item_details_content {
    padding: 25px 30px 30px;
    background-color: #ffffff; /* 詳細部分の背景 */
    border-top: 1px solid #d1d9e0; /* サマリー部分との区切り */
    /* detailsタグの標準動作ではmax-heightアニメーションはCSSだけでは効きにくい */
}

.industry_detail_intro {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.95em;
    color: #4a5562;
    line-height: 1.7;
    margin-bottom: 25px;
    border-left: 3px solid #60a5fa;
    padding-left: 15px;
}

.industry_detail_grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}
.industry_detail_subtitle {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.95em;
    font-weight: 600;
    color: #334155;
    margin-top: 0;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}
.industry_detail_subtitle::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #3b82f6;
    border-radius: 50%;
    margin-right: 8px;
}

.industry_detail_list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.9em;
    color: #4a5c6d;
}
.industry_detail_list li {
    margin-bottom: 6px;
    padding-left: 15px;
    position: relative;
}
.industry_detail_list li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: #60a5fa;
    font-weight: bold;
}

.industry_detail_cta {
    display: inline-block;
    background-color: #2563eb;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.9em;
    font-weight: 500;
    transition: background-color 0.2s;
}
.industry_detail_cta:hover {
    background-color: #1d4ed8;
}

/* === Responsive Adjustments === */
@media (max-width: 768px) {
    .industry_usecase_section {
        padding: 50px 15px;
    }
    .industry_usecase_main_title {
        font-size: 1.8em;
    }
    .industry_usecase_subtitle {
        font-size: 1em;
    }
    .industry_item_summary_trigger {
        padding: 15px 20px;
    }
    .industry_item_title {
        font-size: 1.15em;
    }
    .industry_item_summary_text {
        font-size: 0.85em;
    }
    .industry_item_icon_decorative {
        width: 36px;
        height: 36px;
    }
    .industry_item_icon_decorative svg {
        width: 20px;
        height: 20px;
    }
    .industry_item_details_content {
        padding: 20px;
    }
    .industry_detail_grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .industry_item_summary_content {
        gap: 10px;
    }
}