/* ===========================================================
  環境ビジネス・アスファルト課専用スタイル
  - #energy-lng 配下のスタイル
  =========================================================== */

/* SP */
body {
    color: var(--text-color-lng);
    font-weight: 500;
    line-height: 1.5;
}

p,
h2,
h3,
h4,
h5,
h6 {
    letter-spacing: 0.04em;
}

.ly_header {
    background: #fff;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 999;
    height: 60px;
    padding: 0 34px 0 24px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    width: 335px;
}

.bl_header_logo_img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.ly_main {
    background: var(--bg-color-lng);
}

.bl_mv {
    padding-bottom: 80px;
    position: relative;
    width: 100%;
    min-height: 600px;
    max-height: 900px;
    height: 100vh;
    overflow: hidden;
    background: url('/common/images/energy-lng/img_mv_sp.webp') no-repeat left top;
    background-size: max(100%, 375px) auto;
    margin-bottom: -16px;
}

.bl_mv_txtBox {
    padding-top: min(calc(100vw * 700 / 750), 52vh);
    padding-left: 20px;
    margin-bottom: 30px;
    position: relative;
    z-index: 20;
}

.bl_mv_subttl {
    padding-left: 30px;
    margin-bottom: 4px;
    font-family: var(--font-en-lng);
    font-size: 0.875rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    position: relative;
}

.bl_mv_subttl::before {
    content: '';
    display: block;
    position: absolute;
    top: 50%;
    left: 0;
    width: 25px;
    height: 1px;
    background: var(--text-color-lng);
}

.bl_mv_txtBox_ttl {
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.5;
    font-size: 1.5rem;
    white-space: nowrap;
}

.bl_mv_txtBox_txt {
    margin: -10px 0 26px;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
}

.el_contact_btn {
    width: 250px;
    pointer-events: auto;
    cursor: pointer;
}

.el_contact_btn a {
    display: block;
    width: 100%;
    text-decoration: none;
}

.el_contact_btn span {
    display: block;
    width: 100%;
    height: auto;
    background-image: url('/common/images/energy-lng/btn_contact_sp.webp');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    text-indent: -9999px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 500 / 120;
}

.bl_mv_imgBox img {
    position: absolute;
    top: -74px;
    left: 50%;
    z-index: 3;
    -webkit-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    transform: translateX(-50%);
    width: max(120%, 567.5px);
    max-width: none;
    opacity: 0;
    -webkit-animation: fadeInUp 0.8s ease-out forwards;
    animation: fadeInUp 0.8s ease-out forwards;
}

.bl_mv_imgBox img:nth-child(1) {
    -webkit-animation-delay: 0.5s;
    animation-delay: 0.5s;
}

.bl_mv_imgBox img:nth-child(2) {
    -webkit-animation-delay: 0.8s;
    animation-delay: 0.8s;
}

.bl_mv_imgBox img:nth-child(3) {
    -webkit-animation-delay: 1.1s;
    animation-delay: 1.1s;
}

@-webkit-keyframes fadeInUp {
    0% {
        opacity: 0;
        -webkit-transform: translateX(-50%) translateY(30px);
        transform: translateX(-50%) translateY(30px);
    }

    100% {
        opacity: 1;
        -webkit-transform: translateX(-50%) translateY(0);
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        -webkit-transform: translateX(-50%) translateY(30px);
        transform: translateX(-50%) translateY(30px);
    }

    100% {
        opacity: 1;
        -webkit-transform: translateX(-50%) translateY(0);
        transform: translateX(-50%) translateY(0);
    }
}

.bl_lead {
    padding-top: 65px;
    margin: 0 0 36px;
    border-top-right-radius: 21px;
    border-bottom-right-radius: 21px;
    margin-right: 10px;
    background: #fff;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
    overflow: hidden;
    position: relative;
    z-index: 2;
}

.bl_lead_ttl {
    margin-bottom: 24px;
    padding-left: 20px;
    font-size: 1.3125rem;
    font-weight: bold;
    line-height: 1.52;
    position: relative;
}

.bl_lead_ttl::before {
    content: 'Assignment';
    position: absolute;
    top: -5.8rem;
    left: 0;
    width: 100%;
    height: 100%;
    font-family: var(--font-en-lng);
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    color: #f0f8f4;
}

.bl_lead_sustainable {
    padding: 22px 20px 0;
    width: 100%;
    height: auto;
    background: url('/common/images/energy-lng/img_sustainable_bg_sp.webp') no-repeat center top / cover;
}

.bl_lead_sustainable_ttl {
    margin-bottom: 20px;
    font-size: 1rem;
    font-weight: bold;
    padding-left: 2rem;
    position: relative;
}

.bl_lead_sustainable_ttl::before {
    content: '';
    display: block;
    position: absolute;
    top: 50%;
    left: 0;
    width: 25px;
    height: 1px;
    background: var(--text-color-lng);
}

.bl_lead_sustainable_list {
    font-size: 1rem;
    font-weight: bold;
    counter-reset: lead-num;
}

.bl_lead_sustainable_list li {
    padding-left: 20px;
    margin-bottom: 10px;
    height: 100px;
    background: #fff;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: relative;
    counter-increment: lead-num;
    border-top-right-radius: 12px;
    letter-spacing: 0.04em
}

.bl_lead_sustainable_list li:last-child {
    margin-bottom: 0;
    position: relative;
    z-index: 3;
}

.bl_lead_sustainable_list li::after {
    content: counter(lead-num, decimal-leading-zero);
    position: absolute;
    top: -20px;
    right: 20px;
    font-family: var(--font-en-lng);
    font-size: 1.9375rem;
    font-weight: 900;
    color: var(--text-color-lng);
    z-index: 1;
}

.bl_lead_strength {
    padding: 95px 0 50px;
    margin-top: -50px;
    width: 100%;
    height: auto;
    background: url('/common/images/energy-lng/img_strength_bg_sp.webp') no-repeat center top / cover;
}

.bl_lead_strength hgroup {
    padding: 0 20px;
    margin-bottom: 24px;
}

.bl_lead_strength_subttl {
    padding-left: 2rem;
    margin-bottom: 8px;
    font-family: var(--font-en-lng);
    font-size: 0.875rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    position: relative;
    color: #fff;
}

.bl_lead_strength_subttl::before {
    content: '';
    display: block;
    position: absolute;
    top: 50%;
    left: 0;
    width: 25px;
    height: 1px;
    background: #fff;
}

.bl_lead_strength_ttl {
    color: #fff;
    font-size: 1.3125rem;
    font-weight: bold;
    line-height: 1.52;
}

.bl_lead_strength_item {
    margin: 0 60px 10px 0;
    padding: 14px 0 20px;
    background: #fff;
    font-size: 0.875rem;
    font-weight: bold;
    position: relative;
    border-top-right-radius: 16px;
    overflow: hidden;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.bl_lead_strength_item::before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 80px;
    height: 100%;
    background: #e4eeec;
    z-index: 0;
    pointer-events: none;
}

.bl_lead_strength_item>* {
    position: relative;
    z-index: 1;
}

.bl_lead_strength_item:last-child {
    margin-bottom: 0;
}

.bl_lead_strength_item img {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 10px;
}

.bl_lead_strength_item_txtBox h3 {
    margin-bottom: 4px;
    font-family: var(--font-en-lng);
    font-size: 0.875rem;
    letter-spacing: 0.04em;
    line-height: 1;
}

.bl_lead_strength_item_txtBox h3 span {
    font-size: 1.5rem;
    font-family: var(--font-en-lng);
    font-weight: 900;
    margin-left: 6px;
}

.bl_lead_strength_item_title {
    font-size: 1.125rem;
    font-weight: bold;
    margin-bottom: 6px;
}

.bl_lead_strength_item_desc {
    font-size: 0.8125rem;
    line-height: 1.5;
}

.bl_assignment {
    padding-right: 20px;
    margin-bottom: 50px;
}

.bl_assignment hgroup {
    padding-left: 20px;
    margin-bottom: 16px;
}

.bl_assignment_en {
    font-family: var(--font-en-lng);
    font-size: 2.125rem;
    font-weight: 900;
    line-height: 1.5;
}

.bl_assignment_ttl {
    font-size: 1.125rem;
}

.bl_assignment_item {
    min-height: 170px;
    margin-bottom: 10px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    border-top-right-radius: 16px;
    background: #fff;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
}

.bl_assignment_item picture {
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.bl_assignment_item img {
    max-width: 135px;
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 540 / 680;
}

.bl_assignment_item_txtBox {
    margin-left: 20px;
}

.bl_assignment_item_txtBox h3 {
    margin-bottom: 4px;
    font-size: 1.0625rem;
}

.bl_assignment_item_txt {
    font-size: 0.8125rem;
    font-weight: bold;
    line-height: 1.38;
}

.bl_assignment_item_txtBox_annotation {
    padding-left: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    position: relative;
}

.bl_assignment_item_txtBox_annotation::before {
    content: '※';
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    position: absolute;
    top: 0;
    left: 0;
}

.bl_reason {
    padding-top: 36px;
    padding-bottom: 50px;
    background: url('/common/images/energy-lng/img_reason_bg_sp.webp') no-repeat center top / cover;
    border-radius: 21px;
}

.bl_reason_inner {
    padding: 0 20px;
}

.bl_reason_txtBox {
    margin-bottom: 240px;
}

.bl_reason_en {
    font-family: var(--font-en-lng);
    font-size: 2.125rem;
    font-weight: 900;
    line-height: 1.5;
}

.bl_reason_ttl {
    font-size: 1.125rem;
}

.bl_reason_lead {
    margin-top: 14px;
    padding-top: 16px;
    line-height: 1.8;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
}

.bl_reason_lead::before {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: var(--text-color-lng);
    position: absolute;
    top: 0;
    left: 0;
}

.bl_reason_graph {
    margin-left: -20px;
    background: #fff;
    border-top-right-radius: 16px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 15px;
    grid-gap: 15px;
    padding: 40px 20px;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
    position: relative;
}

.bl_reason_graph_txtBlock {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    min-width: 0;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
}

.bl_reason_graph_txt {
    font-size: 1.1875rem;
    font-weight: bold;
    margin-bottom: 8px;
    white-space: nowrap;
}

.bl_reason_graph_txt span {
    font-size: 0.8125rem;
}

.bl_reason_graph_pic {
    width: 190px;
    -ms-flex-negative: 0;
    flex-shrink: 0;
    position: absolute;
    bottom: 8px;
    right: 20px;
}

.bl_reason_graph_annotation {
    font-size: 0.6875rem;
    margin: 0;
}

.bl_faq {
    padding: 0 20px;
    margin: 36px 0 50px;
}

.bl_faq_en {
    font-family: var(--font-en-lng);
    font-size: 2.125rem;
    font-weight: 900;
    line-height: 1.5;
}

.bl_faq_ttl {
    font-size: 1.125rem;
}

.bl_faq_lead {
    margin-top: 14px;
    padding: 20px 0;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
}

.bl_faq_lead::before {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: var(--text-color-lng);
    position: absolute;
    top: 0;
    left: 0;
}

.bl_faq_list {
    color: var(--text-color-ships);
    width: min(100%, 910px);
}

.bl_faq_item {
    margin-bottom: 12px;
    background: #fff;
    border-top-right-radius: 16px;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
}

.bl_faq_item:last-child {
    margin-bottom: 0;
}

.bl_faq_item dt {
    height: 2.8125rem;
    padding-left: 3.25rem;
    font-weight: bold;
    letter-spacing: 0;
    position: relative;
    border-bottom: 1px solid #dce4e2;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.bl_faq_item dt::before {
    content: 'Q';
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    position: absolute;
    top: 0;
    left: 0;
    width: 2.5rem;
    height: 2.8125rem;
    color: #fff;
    background: var(--text-color-lng);
    font-size: 1.3125rem;
    font-weight: bold;
    font-family: var(--font-en-lng);
}

.bl_faq_item dd {
    font-size: 0.8125rem;
    padding: 12px 20px 16px 3.25rem;
    position: relative;
}

.bl_faq_item dd::before {
    content: 'A';
    position: absolute;
    top: 0.5rem;
    left: 1.5rem;
    color: var(--text-color-lng);
    font-size: 1.3125rem;
    font-weight: bold;
    font-family: var(--font-en-lng);
}


.bl_conclusion {
    margin: 0 20px;
    padding-top: 36px;
    background: #fff;
    border-top-right-radius: 21px;
    box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
    text-align: center;
    position: relative;
    z-index: 2;
}

.bl_conclusion_ttl {
    font-size: 1.3125rem;
    font-weight: bold;
    line-height: 1.38;
}

.bl_conclusion_lead {
    margin-top: 10px;
    padding-top: 14px;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
    z-index: 3;
}

.bl_conclusion_lead::before {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: var(--text-color-lng);
    position: absolute;
    top: 0;
    left: 50%;
    -webkit-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    transform: translateX(-50%);
}

.bl_conclusion_topBlock {
    padding-bottom: 30px;
    position: relative;
}

.bl_conclusion_topBlock::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 3px;
    width: 84px;
    height: auto;
    aspect-ratio: 97 / 100;
    background: url('/common/images/energy-lng/img_conclusion01.webp') no-repeat center top / cover;
}

.bl_conclusion_topBlock::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 3px;
    width: 76px;
    height: auto;
    aspect-ratio: 90 / 100;
    background: url('/common/images/energy-lng/img_conclusion02.webp') no-repeat center top / cover;
}

.bl_conclusion_bottomBlock {
    padding: 24px 0;
    background: url('/common/images/energy-lng/img_conclusion_bg_sp.webp') no-repeat center top / cover;
}

.bl_conclusion_bottomBlock_top {
    font-weight: bold;
    margin-bottom: 10px;
    line-height: 1.4;
}

.bl_conclusion_bottomBlock_bottom {
    font-size: 0.8125rem;
    font-weight: 500;
}

.bl_contact {
    margin-top: -60px;
    color: #fff;
    text-align: center;
}

.bl_contact_inner {
    padding: 82px 0 43px;
    border-top-left-radius: 21px;
    border-top-right-radius: 21px;
    background: url('/common/images/energy-lng/img_contact_bg_sp.webp') no-repeat center top / cover;
}

.bl_contact_en {
    font-size: 1.125rem;
    font-family: var(--font-en-lng);
    font-weight: 900;
}

.bl_contact_ttl {
    font-size: 1.625rem;
    font-weight: bold;
    letter-spacing: 0.06em;
}

.bl_contact_txt {
    margin-top: 5px;
    padding: 14px 0 20px;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
}

.bl_contact_txt::before {
    content: '';
    display: block;
    width: 80px;
    height: 2px;
    background: #fff;
    position: absolute;
    top: 0;
    left: 50%;
    -webkit-transform: translateX(-50%);
    -ms-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    transform: translateX(-50%);
}

.bl_contact_btn {
    margin-inline: auto;
}

.bl_contact_txt_below {
    margin-top: 5px;
    padding: 14px 0 20px;
    font-size: 0.8125rem;
    font-weight: 500;
    position: relative;
}

.bl_footer_logo {
    width: 291px;
    height: auto;
    margin-inline: auto;
    margin-bottom: 15px;
}

/* =========================
   スクロールアニメーション
   ========================= */

/* 基本のスクロールアニメーション */
.bl_lead,
.bl_assignment,
.bl_reason,
.bl_faq,
.bl_conclusion,
.bl_contact {
    opacity: 0;
    -webkit-transform: translateY(50px);
    -ms-transform: translateY(50px);
    transform: translateY(50px);
    -webkit-transition: opacity 0.8s ease-out, -webkit-transform 0.8s ease-out;
    transition: opacity 0.8s ease-out, -webkit-transform 0.8s ease-out;
    -o-transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, -webkit-transform 0.8s ease-out;
}

.bl_lead.is-in-view,
.bl_assignment.is-in-view,
.bl_reason.is-in-view,
.bl_faq.is-in-view,
.bl_conclusion.is-in-view,
.bl_contact.is-in-view {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}

/* より細かい要素のアニメーション */
.bl_assignment_item,
.bl_lead_sustainable_list li,
.bl_lead_strength_item,
.bl_faq_item {
    opacity: 0;
    -webkit-transform: translateY(30px);
    -ms-transform: translateY(30px);
    transform: translateY(30px);
    -webkit-transition: opacity 0.6s ease-out, -webkit-transform 0.6s ease-out;
    transition: opacity 0.6s ease-out, -webkit-transform 0.6s ease-out;
    -o-transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, -webkit-transform 0.6s ease-out;
}

.bl_assignment_item.is-in-view,
.bl_lead_sustainable_list li.is-in-view,
.bl_lead_strength_item.is-in-view,
.bl_faq_item.is-in-view {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
}

/* PC */
@media screen and (min-width:751px) {

    .ly_header {
        height: 90px;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        justify-content: center;
        width: fit-content;
    }

    .bl_header_logo {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
    }

    .bl_header_logo_img {
        width: 582.5px;
    }

    .bl_mv {
        padding-bottom: 0;
        background: url('/common/images/energy-lng/img_mv.webp') no-repeat right top;
        background-size: max(100%, 1600px) auto;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        overflow: visible;
        min-height: 800px;
        height: 100vh;
        margin-bottom: -130px;
    }

    .bl_mv_txtBox {
        width: min(80%, 1200px);
        margin-inline: auto;
        padding-top: 220px;
        padding-left: 0;
    }

    .bl_mv_subttl {
        margin-bottom: 12px;
        padding-left: 40px;
        font-size: 1rem;
    }

    .bl_mv_subttl::before {
        width: 30px;
    }

    .bl_mv_txtBox_ttl {
        margin-bottom: 28px;
        font-size: 2.125rem;
        letter-spacing: 0.06em;
    }

    .bl_mv_txtBox_txt {
        margin-bottom: 46px;
        font-size: 1rem;
        line-height: 1.8;
        letter-spacing: 0.08em;
    }

    .bl_mv_imgBox.pcBlock {
        position: absolute;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100%;
        pointer-events: none;
        z-index: 15;
        overflow: visible;
    }

    .bl_mv_imgBox img {
        position: absolute;
        top: -100px;
        left: auto;
        right: 0;
        width: 600px;
        max-width: none;
        opacity: 0;
        -webkit-animation: fadeInRight 0.8s ease-out forwards;
        animation: fadeInRight 0.8s ease-out forwards;
        pointer-events: auto;
        z-index: 10;
    }

    .bl_mv_imgBox.pcBlock img:nth-child(1) {
        -webkit-animation-delay: 0.5s;
        animation-delay: 0.5s;
    }

    .bl_mv_imgBox.pcBlock img:nth-child(2) {
        -webkit-animation-delay: 0.8s;
        animation-delay: 0.8s;
    }

    .bl_mv_imgBox.pcBlock img:nth-child(3) {
        -webkit-animation-delay: 1.1s;
        animation-delay: 1.1s;
    }

    @-webkit-keyframes fadeInRight {
        0% {
            opacity: 0;
            -webkit-transform: translateX(50px);
            transform: translateX(50px);
        }

        100% {
            opacity: 1;
            -webkit-transform: translateX(0);
            transform: translateX(0);
        }
    }

    @keyframes fadeInRight {
        0% {
            opacity: 0;
            -webkit-transform: translateX(50px);
            transform: translateX(50px);
        }

        100% {
            opacity: 1;
            -webkit-transform: translateX(0);
            transform: translateX(0);
        }
    }

    .el_contact_btn {
        width: 297px;
        position: relative;
        z-index: 25;
        /* 他の要素より確実に前面に表示 */
    }

    .el_contact_btn span {
        background-image: url('/common/images/energy-lng/btn_contact.webp');
        aspect-ratio: 600 / 120;
    }

    .el_contact_btn span::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('/common/images/energy-lng/btn_contact_hover.webp');
        background-size: contain;
        background-repeat: no-repeat;
        background-position: center;
        opacity: 0;
        -webkit-transition: opacity 0.3s ease;
        -o-transition: opacity 0.3s ease;
        transition: opacity 0.3s ease;
    }

    .el_contact_btn a:hover span::before {
        opacity: 1;
    }

    .bl_lead {
        padding-top: 118px;
        margin: 0 60px 120px 0;
        border-top-right-radius: 31px;
        border-bottom-right-radius: 31px;
        position: relative;
    }

    .bl_lead_ttl {
        max-width: 1140px;
        margin-inline: auto;
        margin-bottom: 40px;
        font-size: 1.625rem;
        font-weight: bold;
    }

    .bl_lead_ttl::before {
        top: -9.7rem;
        left: 0;
        font-family: var(--font-en-lng);
        font-size: 5.6875rem;
    }

    .bl_lead_sustainable {
        padding: 48px 0 0;
        background: url('/common/images/energy-lng/img_sustainable_bg.webp') no-repeat center top / cover;
        background-attachment: scroll;
    }

    .bl_lead_sustainable_inner {
        max-width: 1140px;
        margin-inline: auto;
        padding: 0;
    }

    .bl_lead_sustainable_ttl {
        margin-bottom: 30px;
        font-size: 1.3125rem;
        padding-left: 40px;
    }

    .bl_lead_sustainable_ttl::before {
        width: 22px;
        height: 1px;
    }

    .bl_lead_sustainable_list {
        font-size: 1.125rem;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        gap: 30px;
        grid-gap: 30px;
    }

    .bl_lead_sustainable_list li {
        padding: 33px 0 33px 50px;
        margin-bottom: 0;
        width: 440px;
        height: auto;
        border-top-right-radius: 16px;
        line-height: 1.67;
    }

    .bl_lead_sustainable_list li::after {
        top: -30px;
        right: 30px;
        font-size: 2.5625rem;
    }

    .bl_lead_strength {
        padding: 150px 0 120px;
        margin-top: -64px;
        background: url('/common/images/energy-lng/img_strength_bg.webp') no-repeat center top / cover;
    }

    .bl_lead_strength_inner {
        max-width: 1140px;
        margin-inline: auto;
        padding: 0;
    }

    .bl_lead_strength hgroup {
        margin-bottom: 28px;
    }

    .bl_lead_strength_subttl {
        padding-left: 40px;
        margin-bottom: 10px;
        font-size: 1rem;
        letter-spacing: 0.06em;
    }

    .bl_lead_strength_subttl::before {
        width: 30px;
    }

    .bl_lead_strength_ttl {
        font-size: 1.625rem;
        line-height: 1.65;
    }

    .bl_lead_strength_list {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        gap: 30px;
        grid-gap: 30px;
    }

    .bl_lead_strength_item {
        margin: 0;
        padding: 24px 0;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-align: center;
        -ms-flex-align: center;
        align-items: center;
        -ms-flex-preferred-size: calc((100% - 60px) / 3);
        flex-basis: calc((100% - 60px) / 3);
    }

    .bl_lead_strength_item::before {
        width: 50px;
    }

    .bl_lead_strength_item img {
        width: 60px;
        height: 60px;
        margin: 0 0 0 8px;
    }

    .bl_lead_strength_item_txtBox h3 {
        margin-bottom: 6px;
        position: relative;
        line-height: 1.28;
    }

    .bl_lead_strength_item_txtBox h3 span {
        font-size: 2.5625rem;
        margin-left: 0;
        position: absolute;
        top: -0.5rem;
        left: 4.625rem;
    }

    .bl_lead_strength_item_title {
        margin-bottom: 10px;
        letter-spacing: 0.1em;
    }

    .bl_assignment {
        max-width: 1200px;
        margin-inline: auto;
        padding-left: 20px;
        margin-bottom: 120px;
        display: block
    }

    .bl_assignment hgroup {
        padding-left: 0;
        margin-bottom: 20px;
    }

    .bl_assignment_en {
        margin-bottom: 8px;
        font-size: 2.875rem;
        line-height: 1;
    }

    .bl_assignment_ttl {
        font-size: 1.3125rem;
    }


    .bl_assignment_item_txtBox {
        margin-left: 24px;
    }

    .bl_assignment_item_txtBox h3 {
        font-size: 1.1875rem;
        margin-bottom: 8px;
    }

    .bl_assignment_item_txtBox_annotation {
        padding-left: 0.75rem;
        margin-top: 8px;
        font-size: 0.75rem;
    }

    .bl_assignment_item_txtBox_annotation::before {
        font-size: 0.75rem;
    }

    .bl_assignment_item_txt {
        line-height: 1.67;
    }

    .bl_reason {
        padding-top: 120px;
        padding-bottom: 120px;
        background: url('/common/images/energy-lng/img_reason_bg.webp') no-repeat center top / cover;
    }

    .bl_reason_inner {
        max-width: 1200px;
        margin-inline: auto;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
    }

    .bl_reason_txtBox {
        margin-bottom: 0;
    }

    .bl_reason_en {
        margin-bottom: 8px;
        font-size: 2.875rem;
        line-height: 1;
    }

    .bl_reason_ttl {
        font-size: 1.3125rem;
    }

    .bl_reason_lead {
        margin-top: 22px;
        padding: 24px 0;
        font-size: 1rem;
        line-height: 1.94;
    }

    .bl_reason_graph {
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -webkit-box-orient: vertical;
        -webkit-box-direction: normal;
        -ms-flex-direction: column;
        flex-direction: column;
        gap: 0;
        grid-gap: 0;
        padding: 30px 34px;
    }

    .bl_reason_graph_txtBlock {
        display: contents;
    }

    .bl_reason_graph_txt {
        text-align: center;
        margin-bottom: 10px;
        line-height: 1.2;
        order: 1;
    }

    .bl_reason_graph_pic {
        position: static;
        width: 270px;
        order: 2;
    }

    .bl_reason_graph_annotation {
        order: 3;
        margin-top: 16px;
    }

    .bl_faq {
        max-width: 1200px;
        margin: 120px auto 124px;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
    }

    .bl_faq_en {
        margin-bottom: 8px;
        font-size: 2.875rem;
        line-height: 1;
    }

    .bl_faq_ttl {
        font-size: 1.3125rem;
    }

    .bl_faq_lead {
        margin-top: 24px;
        padding: 24px 0;
        font-size: 1rem;
        line-height: 1.94;
    }

    .bl_faq_item {
        margin-bottom: 24px;
    }

    .bl_faq_item dt {
        height: 3.75rem;
        padding-left: 5rem;
        font-size: 1.1875rem;
        letter-spacing: 0.08em;
    }

    .bl_faq_item dt::before {
        width: 3.75rem;
        height: 3.75rem;
        font-size: 1.8125rem;
    }

    .bl_faq_item dd {
        padding: 20px 0 20px 80px;
        font-size: 0.875rem;
        line-height: 1.8;
    }

    .bl_faq_item dd::before {
        left: 2.5rem;
        font-size: 1.8125rem;
    }

    .bl_conclusion {
        max-width: 1200px;
        margin: 0 auto;
        padding-top: 44px;
    }

    .bl_conclusion_ttl {
        font-size: 1.625rem;
        line-height: 1.67;
        letter-spacing: 0.06em
    }

    .bl_conclusion_lead {
        margin-top: 14px;
        padding: 16px 0 0;
        font-size: 1rem;
        position: relative;
        line-height: 1.94;
    }


    .bl_conclusion_topBlock {
        padding-bottom: 44px;
    }

    .bl_conclusion_topBlock::before {
        bottom: -28px;
        left: 56px;
        width: min(22%, 264px);
        height: auto;
        aspect-ratio: 264 / 395;
    }

    .bl_conclusion_topBlock::after {
        bottom: -18px;
        right: 64px;
        width: min(22%, 235px);
        height: auto;
        aspect-ratio: 235 / 370;
    }

    .bl_conclusion_bottomBlock {
        padding: 44px 0;
        background: url('/common/images/energy-lng/img_conclusion_bg.webp') no-repeat center top / cover;
        position: relative;
        z-index: 2;
    }

    .bl_conclusion_bottomBlock_top {
        font-size: 1.1875rem;
        margin-bottom: 20px;
        line-height: 1.67;
    }

    .bl_conclusion_bottomBlock_bottom {
        font-size: 1rem;
        line-height: 1.8;
    }

    .bl_contact {
        margin-top: -134px;
    }

    .bl_contact_inner {
        padding: 200px 0 90px;
        background: url('/common/images/energy-lng/img_contact_bg.webp') no-repeat center top / cover;
    }

    .bl_contact_en {
        font-size: 1.325rem;
        line-height: 1;
        margin-bottom: 4px;
    }

    .bl_contact_ttl {
        font-size: 2.125rem;
    }

    .bl_contact_txt {
        margin-top: 12px;
        padding: 20px 0 34px;
        font-size: 1rem;
        line-height: 1.8;
    }

    .bl_contact_txt_below {
        margin-top: 12px;
        padding: 20px 0 34px;
        font-size: 1rem;
        line-height: 1.8;
    }

    .bl_footer_logo {
        width: 530px;
        margin-bottom: 0;
        margin-inline: 0;
    }
}

@media screen and (min-width: 850px) {
    .bl_assignment_list {
        display: -ms-grid;
        display: grid;
        -ms-grid-columns: 1fr 24px 1fr;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px 24px;
        grid-gap: 20px 24px;
    }

    .bl_assignment_item {
        margin-bottom: 0;
        min-width: 0;
    }

    .bl_assignment_item img {
        max-width: 150px;
        height: auto;
        aspect-ratio: 300 / 340;
    }
}

@media screen and (min-width: 1200px) {
    .bl_mv_imgBox img {
        top: -160px;
        right: 12%;
        width: 750px;
    }

    .bl_lead_ttl {
        padding-left: 0;
    }

    .bl_lead_strength hgroup {
        padding: 0;
    }

    .bl_lead_strength_item {
        -ms-flex-preferred-size: 340px;
        flex-basis: 340px;
        -webkit-box-flex: 0;
        -ms-flex-positive: 0;
        flex-grow: 0;
        -ms-flex-negative: 0;
        flex-shrink: 0;
    }

    .bl_lead_strength_item img {
        width: 90px;
        height: 90px;
        margin: 0 16px 0 20px;
    }

    .bl_lead_strength_item::before {
        width: 90px;
    }

    .bl_assignment {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: justify;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -webkit-box-align: start;
        -ms-flex-align: start;
        align-items: flex-start;
        padding: 0;
    }

    .bl_assignment_item {
        min-width: 430px;
    }

    .bl_reason_inner {
        padding: 0;
    }

    .bl_faq {
        padding: 0;
    }
}


/* ===========================================================
  CONTACTフォーム
  =========================================================== */

.bl_contact_mv {
    background: url('/common/images/contact/img_contact_lng.webp') no-repeat center top / cover;
}