/* ===========================================================
  舶用潤滑油課専用スタイル
  - #energy-ships 配下のスタイル
  =========================================================== */

/* SP */
body {
  color: var(--text-color-ships);
  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 24px 0 20px;
  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;
}

.bl_mv {
  position: relative;
  background: var(--bg-color-ships);
}

.bl_mv_txtBox {
  position: absolute;
  top: calc(100vw * 164 / 750);
  left: 20px;
  z-index: 10;
  color: #fff;
}

.bl_mv_subttl {
  margin-bottom: 10px;
  font-size: 1.625rem;
  font-family: var(--font-en-ships);
  line-height: 1;
}

.bl_mv_subttl span {
  font-size: 1rem;
}

.bl_mv_ttl {
  margin-bottom: 4px;
  font-size: 2.0625rem;
  line-height: 1.33;
  letter-spacing: 0.02em;
}

.bl_mv_txt {
  font-size: 1rem;
}

.bl_mv_slider {
  position: relative;
  overflow: hidden;
}

/* Slick初期化前のスライドアイテム非表示（2枚目以降のみ） */
.bl_mv_slider:not(.slick-initialized) .slide-item:not(:first-child) {
  display: none;
}

/* Slick slider用の基本設定 */
.bl_mv_slider .slick-list {
  overflow: hidden;
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
}

.bl_mv_slider .slick-track {
  position: relative;
  top: 0;
  left: 0;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.bl_mv_slider .slick-slide {
  display: none;
  float: left;
  height: 100%;
  min-height: 1px;
}

.bl_mv_slider .slick-slide.slick-loading img {
  display: none;
}

.bl_mv_slider .slick-slide.dragging img {
  pointer-events: none;
}

.bl_mv_slider.slick-initialized .slick-slide {
  display: block;
}

/* スライドアイテム用のスタイル */
.bl_mv_slider .slide-item {
  position: relative;
  width: 100%;
}

.bl_mv_slider .slide-item picture,
.bl_mv_slider .slide-item img {
  width: 100%;
  height: auto;
  display: block;
}

.bl_mv_slider img {
  width: 100%;
  height: auto;
  display: block;
}

.bl_banner {
  margin-left: 20px;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  color: #fff;
  background: #b4141e;
  opacity: 0;
  visibility: hidden;
  -webkit-transition: -webkit-transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  transition: -webkit-transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  -o-transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
  transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease, -webkit-transform 0.3s ease;
  border-top-left-radius: 9px;
}

.bl_banner.is-visible {
  opacity: 1;
  visibility: visible;
}

.bl_banner.is-collapsed {
  -webkit-transform: translateX(calc(100% - 45px));
  -ms-transform: translateX(calc(100% - 45px));
  transform: translateX(calc(100% - 45px));
}

.bl_banner.is-footer-stop {
  position: absolute;
  bottom: 100px;
}

.bl_banner_inner {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: start;
  -ms-flex-pack: start;
  justify-content: flex-start;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}

.bl_banner_pic {
  -ms-flex-negative: 0;
  flex-shrink: 0;
  background: #96000a;
  padding: 10px;
  cursor: pointer;
  -webkit-transition: background-color 0.3s ease;
  -o-transition: background-color 0.3s ease;
  transition: background-color 0.3s ease;
  width: 45px;
  height: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  min-height: 4.0625rem;
  border-top-left-radius: 9px;
}

.bl_banner_pic img {
  width: 100%;
  height: 100%;
}

.bl_banner_cont {
  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;
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  -webkit-transition: opacity 0.3s ease;
  -o-transition: opacity 0.3s ease;
  transition: opacity 0.3s ease;
}

.bl_banner.is-collapsed .bl_banner_cont {
  opacity: 0;
  pointer-events: none;
}

.bl_banner_pic:hover {
  background: #7a0008;
}

.bl_banner_txt.spBlock {
  font-size: 0.8125rem;
}

.bl_banner_btn {
  border-radius: 100vmax;
  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;
  text-align: center;
  box-shadow: 1.41px 1.41px 4px 0px rgba(0, 20, 50, 0.3);
}

.bl_banner_btn a {
  display: inline-block;
  width: 9.0625rem;
  padding: 6px 36px 6px 12px;
  background: #fff;
  color: var(--point-color-ships);
  font-size: 1.125rem;
  font-weight: bold;
  text-decoration: none;
  border-radius: 100vmax;
  position: relative;
  transition: all 0.3s ease;
}

.bl_banner_btn a::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  width: 13px;
  height: 15px;
  background-image: url('/common/images/energy-ships/icon_arrow.webp');
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  transition: all 0.3s ease;
}

.bl_banner_btn a:hover {
  background: #fffab4;
}

.bl_banner_btn a:hover::after {
  transform: translateY(-50%) translateX(4px);
}

.bl_choice {
  padding-top: 45px;
  background: var(--bg-color-ships);
}

.bl_choice_inner {
  padding: 0 20px;
}

.bl_choice_en {
  margin-bottom: 4px;
  font-family: var(--font-en-ships);
  font-weight: bold;
  line-height: 1.3;
  color: var(--point-color-ships);
  text-align: center;
  letter-spacing: 0.02em;
}

.bl_choice_ttl {
  font-size: 1.4375rem;
  font-weight: bold;
  line-height: 1.35;
  letter-spacing: 0.02em;
  text-align: center;
  white-space: nowrap;
}

.bl_choice_lead {
  padding-top: 15px;
  margin-top: 15px;
  margin-bottom: 24px;
  font-size: 0.875rem;
  line-height: 1.7;
  text-align: center;
  position: relative;
}

.bl_choice_lead::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 90px;
  height: 2px;
  background-color: var(--point-color-ships);
  transform: translateX(-50%);
}

.bl_choice_list {
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
  counter-reset: choice;
}

.bl_choice_item {
  padding: 60px 20px 20px;
  display: flex;
  flex-direction: column;
  margin-bottom: 12px;
  color: #fff;
  border-radius: 6px;
  position: relative;
  background: url('/common/images/energy-ships/img_choice01_sp.webp') no-repeat center center / cover;
}

.bl_choice_item::after {
  content: counter(choice, decimal-leading-zero);
  counter-increment: choice;
  position: absolute;
  top: -0.375rem;
  left: -0.125rem;
  color: #fff;
  font-size: 2.875rem;
  font-weight: bold;
  font-family: var(--font-en-ships);
  line-height: 1;
}

.bl_choice_item:nth-child(2) {
  background: url('/common/images/energy-ships/img_choice02_sp.webp') no-repeat center center / cover;
}

.bl_choice_item:nth-child(3) {
  background: url('/common/images/energy-ships/img_choice03_sp.webp') no-repeat center center / cover;
  margin-bottom: 0;
}

.bl_choice_item_ttl {
  font-size: 1.3125rem;
  font-weight: bold;
  line-height: 1.4;
  margin-bottom: 6px;
}

.bl_choice_item_txt {
  font-size: 0.875rem;
  letter-spacing: 0;
}

.bl_choice_txt {
  width: 100vw;
  margin: -160px calc(50% - 50vw) 0;
  padding-top: 160px;
  padding-bottom: 36px;
  text-align: center;
  font-weight: bold;
  background: #fff;
  border-top-right-radius: 16px;
  border-top-left-radius: 16px;
}

.bl_choice_txt span {
  color: var(--point-color-ships);
}

.bl_strength {
  padding: 40px 0 50px;
  background: var(--bg-color-ships);
  background: url('/common/images/energy-ships/img_strength_bg_sp.webp') no-repeat center center / cover;
}

.bl_strength_inner {
  padding: 0 20px;
}

.bl_strength hgroup {
  margin-bottom: 24px;
  color: #fff;
}

.bl_strength_ttl {
  font-size: 1.4375rem;
  font-weight: bold;
  line-height: 1.4;
  margin-bottom: 10px;
}

.bl_strength_en {
  font-weight: bold;
  line-height: 1.3;
  letter-spacing: 0;
}

.bl_strength_item {
  margin-bottom: 12px;
  padding: 20px 18px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 6px;
  display: flex;
  align-items: flex-start;
}

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

.bl_strength_item img {
  width: 40px;
}

.bl_strength_item_ttl {
  width: 2.75rem;
  min-height: 2.75rem;
  padding-top: 3.5rem;
  font-size: 1.3125rem;
  font-weight: bold;
  line-height: 1.2;
  color: var(--point-color-ships);
  writing-mode: vertical-rl;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.bl_strength_item_ttl::before {
  height: auto;
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.bl_strength_item:nth-child(1) .bl_strength_item_ttl::before {
  width: 2.5rem;
  aspect-ratio: 80 / 100;
  background-image: url('/common/images/energy-ships/icon_strength01.webp');
}

.bl_strength_item:nth-child(2) .bl_strength_item_ttl::before {
  width: 2.5rem;
  aspect-ratio: 80 / 80;
  background-image: url('/common/images/energy-ships/icon_strength02.webp');
}

.bl_strength_item:nth-child(3) .bl_strength_item_ttl::before {
  width: 2.8125rem;
  aspect-ratio: 90 / 100;
  background-image: url('/common/images/energy-ships/icon_strength03.webp');
}

.bl_strength_item_txtBox {
  margin-left: 15px;
  flex: 1;
}

.bl_strength_item_txtBox h4 {
  margin-bottom: 8px;
  font-size: 1.1875rem;
  line-height: 1.36em;
}

.bl_strength_item_txtBox p {
  font-size: 0.875rem;
}

.bl_caseStudies {
  background: var(--bg-color-ships);
  padding: 44px 0;
}

.bl_caseStudies_inner {
  padding: 0 20px;
}

.bl_caseStudies hgroup {
  background: linear-gradient(to right, var(--point-color-ships) 80px, #bec8d2 80px) bottom left / 100% 2px no-repeat;
  padding-bottom: 16px;
  margin-bottom: 22px;
}

.bl_caseStudies_en {
  font-family: var(--font-en-ships);
  color: var(--point-color-ships);
  font-size: 2.125rem;
  font-weight: bold;
  line-height: 1;
  letter-spacing: 0.02em;
}

.bl_caseStudies_ttl {
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.bl_caseStudies_list {
  counter-reset: caseStudies;
}

.bl_caseStudies_item {
  background: #fff;
  box-shadow: 0px 0px 10px rgba(0, 20, 50, 0.2);
  border-radius: 6px;
  position: relative;
}

.bl_caseStudies_item img {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 85%;
  height: auto;
  object-fit: cover;
  border-top-left-radius: 6px;
}

.bl_caseStudies_item picture {
  position: relative;
  display: block;
}

.bl_caseStudies_item picture::before {
  content: "CASE";
  position: absolute;
  top: 0.625rem;
  right: 0.675rem;
  font-size: 0.75rem;
  font-family: var(--font-en-ships);
  font-weight: bold;
  line-height: 1;
  color: var(--point-color-ships);
  z-index: 10;
}

.bl_caseStudies_item picture::after {
  content: counter(caseStudies, decimal-leading-zero);
  counter-increment: caseStudies;
  position: absolute;
  top: 1.25rem;
  right: 0.425rem;
  font-family: var(--font-en-ships);
  font-size: 1.9375rem;
  font-weight: bold;
  line-height: 1;
  color: var(--point-color-ships);
  z-index: 10;
}

.bl_caseStudies_item_case {
  padding: calc(50% + 1rem) 20px 24px;
}

.bl_caseStudies_item_case_ttl {
  margin-bottom: 4px;
  font-size: 0.875rem;
  letter-spacing: 0;
}

.bl_caseStudies_item_case_ttl span {
  font-weight: bold;
  color: var(--point-color-ships);
}

.bl_caseStudies_item_case h3 {
  font-size: 1.25rem;
  line-height: 1.3;
  letter-spacing: 0;
  display: inline;
}

.bl_caseStudies_item_case_txt {
  padding-top: 10px;
  margin-top: 8px;
  font-size: 0.8125rem;
  line-height: 1.6;
  letter-spacing: 0;
  border-top: 1px solid #bec8d2;
}

.bl_caseStudies_item_point {
  padding: 14px 20px 24px;
  background: #e6f2fe;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
}

.bl_caseStudies_item_point li {
  padding-left: 1rem;
  margin-bottom: 5px;
  font-size: 0.875rem;
  font-weight: bold;
  position: relative;
}

.bl_caseStudies_item_point li:last-child {
  margin-bottom: 0;
}

.bl_caseStudies_item_point li::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 0.625rem;
  height: 0.625rem;
  background-image: url('/common/images/energy-ships/icon_point.webp');
  background-repeat: no-repeat;
  background-size: contain;
}

.bl_caseStudies_item_point_ttl {
  font-size: 1.25rem;
  font-weight: bold;
  font-family: var(--font-en-ships);
  color: var(--point-color-ships);
}

.bl_reason {
  padding: 44px 0 210px;
  position: relative;
  background: url('/common/images/energy-ships/img_reason_bg_sp.webp') no-repeat bottom center / 100% auto;
}

.bl_reason_inner {
  padding: 0 20px;
}

.bl_reason_en {
  margin-bottom: 4px;
  font-family: var(--font-en-ships);
  font-weight: bold;
  color: var(--point-color-ships);
  letter-spacing: 0.02em;
}

.bl_reason_ttl {
  font-size: 1.4375rem;
  letter-spacing: 0.02em;
}


.bl_reason_lead {
  padding-top: 13px;
  margin-top: 13px;
  margin-bottom: 20px;
  font-size: 0.875rem;
  line-height: 1.7;
  position: relative;
  z-index: -1;
}

.bl_reason_lead::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 90px;
  height: 2px;
  background-color: var(--point-color-ships);
}

.bl_reason_list {
  counter-reset: reason;
}

.bl_reason_item {
  margin-bottom: 10px;
  padding: 14px 18px;
  border: 1px solid #ecf0f6;
  border-radius: 6px;
  background: #fff;
}

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

.bl_reason_item_ttl {
  padding-left: 2.8rem;
  font-size: 1.125rem;
  font-weight: bold;
  letter-spacing: 0.02em;
  position: relative;
  counter-increment: reason;
  counter-reset: none;
}

.bl_reason_item_ttl::before {
  content: counter(reason, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 1.9375rem;
  font-weight: bold;
  color: var(--point-color-ships);
  font-family: var(--font-en-ships);
  display: inline-block;
  line-height: 1;
}

.bl_reason_item_txt {
  padding-top: 12px;
  margin-top: 12px;
  font-size: 0.875rem;
  letter-spacing: 0;
  border-top: 1px solid #bec8d2;
}

.bl_faq {
  background: var(--bg-color-ships);
  padding: 44px 0 50px;
}

.bl_faq_inner {
  padding: 0 20px;
}

.bl_faq hgroup {
  background: linear-gradient(to right, var(--point-color-ships) 80px, #bec8d2 80px) bottom left / 100% 2px no-repeat;
  padding-bottom: 16px;
  margin-bottom: 10px;
}

.bl_faq_en {
  font-family: var(--font-en-ships);
  color: var(--point-color-ships);
  font-size: 2.125rem;
  font-weight: bold;
  line-height: 1;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.bl_faq_ttl {
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.bl_faq_lead {
  margin-bottom: 18px;
  font-size: 0.875rem;
  line-height: 1.8;
}

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

.bl_faq_item {
  margin-bottom: 10px;
  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: auto;
  font-weight: bold;
  padding: 10px 16px 12px 3.25rem;
  position: relative;
  border-bottom: 1px solid #dce4e2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.bl_faq_item dt::before {
  padding-top: 10px;
  content: 'Q';
  display: flex;
  justify-content: center;
  position: absolute;
  top: 0;
  left: 0;
  width: 2.5rem;
  height: 100%;
  color: #fff;
  background: var(--point-color-ships);
  font-size: 1.3125rem;
  font-weight: bold;
  font-family: var(--font-en-ships);
}

.bl_faq_item dd {
  font-size: 0.8125rem;
  line-height: 1.7;
  padding: 10px 20px 10px 3.375rem;
  position: relative;
}

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

.bl_contact {
  padding: 44px 0 50px;
  background: url('/common/images/energy-ships/img_contact_bg_sp.webp') no-repeat center center / cover;
  color: #fff;
  text-align: center;
}

.bl_contact_inner {
  padding: 0 20px;
}

.bl_contact_en {
  font-family: var(--font-en-ships);
  font-weight: bold;
}

.bl_contact_ttl {
  font-size: 1.625rem;
  line-height: 1;
}

.bl_contact_lead {
  padding-top: 16px;
  margin: 20px 0 24px;
  font-size: 0.875rem;
  line-height: 1.65;
  text-align: center;
  position: relative;
}

.bl_contact_lead::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 90px;
  height: 2px;
  background-color: var(--point-color-ships);
  transform: translateX(-50%);
}

.bl_contact_btn {
  border-radius: 100vmax;
  display: flex;
  justify-content: center;
  align-items: center;
}

.bl_contact_btn a {
  display: inline-block;
  width: 16.25rem;
  padding: 14px 24px 14px 12px;
  background: #fff;
  color: var(--point-color-ships);
  font-size: 1.325rem;
  font-weight: bold;
  text-decoration: none;
  border-radius: 100vmax;
  position: relative;
  transition: all 0.3s ease;
}

.bl_contact_btn a::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 30px;
  transform: translateY(-50%);
  width: 13px;
  height: 15px;
  background-image: url('/common/images/energy-ships/icon_arrow.webp');
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  transition: all 0.3s ease;
}

.bl_contact_btn a:hover {
  background: #fffab4;
}

.bl_contact_btn a:hover::after {
  transform: translateY(-50%) translateX(4px);
}

.bl_footer_logo {
  width: 289px;
  height: auto;
  margin-inline: auto;
  margin-bottom: 14px;
}


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

  .ly_header {
    height: 65px;
    justify-content: center;
    width: fit-content;
  }

  .bl_header_logo {
    display: flex;
    align-items: center;
  }

  .bl_header_logo_img {
    width: 414px;
  }

  .bl_mv_txtBox {
    top: calc(100vw * 160 / 1600);
    left: 90px;
  }

  .bl_mv_subttl {
    margin-bottom: 24px;
    font-size: 1.625rem;
  }

  .bl_mv_subttl span {
    font-size: 1.1875rem;
  }

  .bl_mv_ttl {
    margin-bottom: 14px;
    font-size: 3.375rem;
    line-height: 1.31;
    letter-spacing: 0.08em;
  }

  .bl_mv_txt {
    font-size: 1.25rem;
    letter-spacing: 0.05em;
  }

  .bl_banner {
    margin-left: 0;
    left: auto;
    right: 0;
    transform: none;
  }

  .bl_banner_inner {
    gap: 20px;
  }

  .bl_banner.is-collapsed {
    transform: translateX(calc(100% - 70px));
  }

  .bl_banner.is-footer-stop {
    position: absolute;
    bottom: 115px;
  }

  .bl_banner_pic {
    padding: 0 15px;
    width: 70px;
    min-height: 6.25rem;
  }

  .bl_banner_pic img {
    width: 100%;
    height: 100%;
  }

  .bl_banner_cont {
    min-height: 6.25rem;
    gap: 10px;
  }

  .bl_banner_txt.pcBlock {
    font-size: 0.9375rem;
    line-height: 1.4;
  }

  .bl_banner_btn {
    margin-right: 20px;
  }

  .bl_banner_btn a {
    width: 11.25rem;
    padding: 15px 40px 15px 20px;
    font-size: 1.3125rem;
  }

  .bl_banner_btn a::after {
    right: 18px;
  }

  .bl_choice {
    padding: 114px 40px 38px;
  }

  .bl_choice_inner {
    max-width: 1200px;
    margin-inline: auto;
    padding: 0;
  }

  .bl_choice_en {
    font-size: 1.125rem;
    margin-bottom: 10px;
  }

  .bl_choice_ttl {
    font-size: 2.125rem;
    letter-spacing: 0.08em;
  }

  .bl_choice_lead {
    padding-top: 25px;
    margin-top: 20px;
    margin-bottom: 46px;
    font-size: 1.125rem;
    line-height: 1.9;
  }

  .bl_choice_lead::before {
    width: 120px;
  }

  .bl_choice_list {
    margin-bottom: 34px;
    display: flex;
    justify-content: space-between;
    gap: 45px;
  }

  .bl_choice_item {
    width: calc((100% - 90px) / 3);
    padding: 88px 28px 24px;
    margin-bottom: 0;
    background: url('/common/images/energy-ships/img_choice01.webp') no-repeat center center / cover;
  }

  .bl_choice_item::after {
    top: -0.6875rem;
    left: -0.25rem;
    font-size: 4.4375rem;
  }

  .bl_choice_item:nth-child(2) {
    background: url('/common/images/energy-ships/img_choice02.webp') no-repeat center center / cover;
  }

  .bl_choice_item:nth-child(3) {
    background: url('/common/images/energy-ships/img_choice03.webp') no-repeat center center / cover;
    margin-bottom: 0;
  }

  .bl_choice_item_ttl {
    font-size: 1.625rem;
    margin-bottom: 16px;
  }

  .bl_choice_item_txt {
    font-size: 1rem;
    line-height: 1.75;
  }

  .bl_choice_txt {
    margin: -296px calc(50% - 50vw) 0;
    padding: 292px 0 40px;
    border-top-right-radius: 41px;
    border-top-left-radius: 41px;
    font-size: 1.3125rem;
    line-height: 1.8;
  }

  .bl_strength {
    padding: 120px 0;
    background: url('/common/images/energy-ships/img_strength_bg.webp') no-repeat center center / cover;
  }

  .bl_strength_inner {
    display: block;
  }

  .bl_strength hgroup {
    margin-bottom: 0;
  }

  .bl_strength_ttl {
    margin-bottom: 12px;
    font-size: 1.8125rem;
    line-height: 1.48;
    letter-spacing: 0.08em;
  }

  .bl_strength_en {
    line-height: 1.75;
  }

  .bl_strength_list {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 0;
  }
  
  .bl_strength_item {
    width: calc((100% - 30px) / 3);
    margin-bottom: 0;
    padding: 36px 0 24px 24px;
    display: block;
  }

  .bl_strength_item img {
    width: 40px;
  }

  .bl_strength_item_ttl {
    padding-left: 3.125rem;
    margin-bottom: 20px;
    width: auto;
    min-height: auto;
    padding-top: 0;
    font-size: 1.4375rem;
    writing-mode: horizontal-tb;
    justify-content: start;
  }

  .bl_strength_item_ttl::before {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
  }

  .bl_strength_item_txtBox {
    margin-left: 0;
  }

  .bl_strength_item_txtBox h4 {
    margin-bottom: 8px;
  }

  .bl_strength_item_txtBox p {
    font-size: 1rem;
  }

  .bl_caseStudies {
    padding: 116px 120px 120px;
  }

  .bl_caseStudies_inner {
    max-width: 1200px;
    margin-inline: auto;
    padding: 0;
  }

  .bl_caseStudies hgroup {
    background: linear-gradient(to right, var(--point-color-ships) 120px, #bec8d2 80px) bottom left / 100% 2px no-repeat;
    padding-bottom: 26px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .bl_caseStudies_en {
    font-size: 2.5625rem;
  }

  .bl_caseStudies_ttl {
    font-size: 1.1875rem;
  }

  .bl_caseStudies_item picture {
    width: calc(100vw * 430 / 1200);
    max-width: 430px;
    position: relative;
    flex-shrink: 0;
    background: #e6f2fe;
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
  }

  .bl_caseStudies_item img {
    width: 100%;
    height: auto;
    position: static;
  }

  .bl_caseStudies_item>div {
    flex: 1;
    min-width: 0;
  }

  .bl_caseStudies_item picture::before {
    top: 30px;
    right: -5.125rem;
    font-size: 1.3125rem;
  }

  .bl_caseStudies_item picture::after {
    top: 3rem;
    right: -5.75rem;
    font-size: 3.5rem;
  }

  .bl_caseStudies_item_case {
    padding: 26px 20px 24px 110px;
  }

  .bl_caseStudies_item_case_ttl {
    font-size: 0.9375rem;
  }

  .bl_caseStudies_item_case h3 {
    font-size: 1.5rem;
  }

  .bl_caseStudies_item_case_txt {
    padding-top: 14px;
    margin-top: 14px;
    font-size: 0.875rem;
    line-height: 1.85;
  }

  .bl_caseStudies_item_point {
    display: flex;
    gap: 24px;
    padding: 20px 24px 24px;
    border-bottom-left-radius: 0;
  }

  .bl_caseStudies_item_point_ttl {
    line-height: 1;
    padding-top: 10px;
  }

  .bl_caseStudies_item_point li {
    padding-left: 1.2rem;
  }

  .bl_reason {
    padding: 114px 0 120px;
    background: url('/common/images/energy-ships/img_reason_bg.webp') no-repeat right center / contain;
  }

  .bl_reason::before {
    position: absolute;
    top: 0;
    left: 0;
    width: min(70vw, 600px);
    height: 100%;
    content: "";
    z-index: 1;
    background: #fff;
  }

  .bl_reason_inner {
    max-width: 1200px;
    margin-inline: auto;
    position: relative;
    z-index: 2;
  }

  .bl_reason_en {
    font-size: 1.125rem;
  }

  .bl_reason_ttl {
    font-size: 2.125rem;
  }

  .bl_reason_lead {
    padding-top: 24px;
    margin-top: 24px;
    margin-bottom: 30px;
    font-size: 1.125rem;
    line-height: 1.89;
  }

  .bl_reason_lead::before {
    width: 120px;
  }

  .bl_reason_item {
    padding: 22px 30px;
    margin-bottom: 14px;
    width: min(100%, 690px);
  }

  .bl_reason_item_ttl {
    padding-left: 3.75rem;
    font-size: 1.3125rem;
  }

  .bl_reason_item_ttl::before {
    font-size: 2.5625rem;
    top: -0.25rem;
  }

  .bl_reason_item_txt {
    font-size: 1rem;
  }

  .bl_faq {
    background: var(--bg-color-ships);
    padding: 116px 0 120px;
  }

  .bl_faq_inner {
    max-width: 1200px;
    margin-inline: auto;
  }

  .bl_faq hgroup {
    background: linear-gradient(to right, var(--point-color-ships) 120px, #bec8d2 80px) bottom left / 100% 2px no-repeat;
    padding-bottom: 26px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .bl_faq_en {
    font-size: 2.5625rem;
    margin-bottom: 0;
  }

  .bl_faq_ttl {
    font-size: 1.1875rem;
  }

  .bl_faq_lead {
    margin-bottom: 24px;
    font-size: 1rem;
  }

  .bl_faq_list {
    width: 100%;
  }

  .bl_faq_item {
    border-radius: 6px;
    box-shadow: 0px 0px 6px rgba(0, 20, 50, 0.2);
  }

  .bl_faq_item dt {
    padding: 15px 0 15px 5.125rem;
    font-size: 1.1875rem;
    letter-spacing: 0.08em;
  }

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

  .bl_faq_item dd {
    padding: 20px 20px 27px 5.125rem;
    font-size: 1rem;
    line-height: 1.5;
  }

  .bl_faq_item dd::before {
    top: 0.75rem;
    left: 2.5rem;
    font-size: 1.8125rem;
  }

  .bl_contact {
    padding: 84px 0 82px;
    background: url('/common/images/energy-ships/img_contact_bg.webp') no-repeat center center / cover;
  }

  .bl_contact_inner {
    padding: 0;
    max-width: 1200px;
    margin-inline: auto;
  }

  .bl_contact_en {
    margin-bottom: 4px;
    font-size: 1.125rem;
  }

  .bl_contact_ttl {
    font-size: 2.125rem;
  }

  .bl_contact_lead {
    padding-top: 20px;
    margin: 20px 0 36px;
    font-size: 1rem;
    line-height: 1.75;
  }

  .bl_contact_lead::before {
    width: 120px;
  }

  .bl_contact_btn a {
    padding: 14px 24px 14px 12px;
    font-size: 1.3125rem;
  }

  .bl_footer_logo {
    width: 573px;
    margin-bottom: 0;
    margin-inline: 0;
  }
}

@media screen and (min-width: 1200px) {
  .bl_mv_txtBox {
    top: calc(100vw * 355 / 1600);
  }

  .bl_strength_inner {
    max-width: 1200px;
    padding: 0;
    margin-inline: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .bl_caseStudies_item {
    display: flex;
  }

  .bl_strength_item {
    min-width: 285px;
  }

  .bl_reason_inner {
    padding: 0;
  }

  .bl_faq_inner {
    padding: 0;
  }
}


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

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


/* =========================
   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_strength,
.bl_choice,
.bl_reason,
.bl_caseStudies,
.bl_faq,
.bl_contact {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.bl_lead.is-in-view,
.bl_strength.is-in-view,
.bl_choice.is-in-view,
.bl_reason.is-in-view,
.bl_caseStudies.is-in-view,
.bl_faq.is-in-view,
.bl_contact.is-in-view {
    opacity: 1;
    transform: translateY(0);
}

/* より細かい要素のアニメーション */
.bl_strength_item,
.bl_caseStudies_item,
.bl_faq_item,
.bl_choice_item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.bl_strength_item.is-in-view,
.bl_caseStudies_item.is-in-view,
.bl_faq_item.is-in-view,
.bl_choice_item.is-in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Slickスライダーのアニメーション設定 */
.bl_mv_slider .slick-slide {
  transition: opacity 0.3s ease;
}

.bl_mv_slider .slick-slide:not(.slick-active) {
  opacity: 0.7;
}

.bl_mv_slider .slick-slide.slick-active {
  opacity: 1;
}

/* フェードモード用の設定 */
.bl_mv_slider.slick-fade .slick-slide {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.bl_mv_slider.slick-fade .slick-slide.slick-active {
  opacity: 1;
}