@charset "UTF-8";
/* Safariバージョン10.1~12.0対策 */
* {
  min-height: 0vw;
  min-height: 0;
}

.company .paragraph {
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #232323;
}

.company-main-visual__container {
  position: relative;
  display: flex;
  flex-direction: column;
  max-width: 1920px;
  margin-top: -12rem;
  padding-top: 16.3rem;
  margin-inline: auto;
  justify-content: flex-start;
  align-items: center;
}
.company-main-visual__bg {
  position: absolute;
  z-index: -2;
  top: 0;
  display: flex;
  overflow-x: clip;
  width: 100vw;
  height: clamp(750px, 532px + 28.3854166667vw, 1077px);
  background-image: url("../../images/sub/bg_company-top-message.jpg");
  background-position: center;
  background-size: cover;
  justify-content: center;
  align-items: flex-end;
}
@media (max-width: 767px) {
  .company-main-visual__bg {
    height: 65rem;
  }
}
.company-main-visual__main-img {
  z-index: -1;
  width: 100%;
  max-width: 1920px;
  flex-shrink: 0;
}
@media (max-width: 1920px) {
  .company-main-visual__main-img {
    width: clamp(1300px, 886.6666666667px + 53.8194444444vw, 1920px);
  }
}
@media (max-width: 1920px) and (max-width: 767px) {
  .company-main-visual__main-img {
    width: clamp(450px, 56.2639821029px + 123.0425055928vw, 1000px);
    transform: translateX(3rem);
  }
}
.company-main-visual__main-img img {
  width: 100%;
  height: auto;
  aspect-ratio: 1920/1077;
}
.company-main-visual__img-area {
  position: relative;
  z-index: 5;
  width: 1086px;
  max-width: calc(100% - 4rem);
  flex-shrink: 0;
}
@media (max-width: 767px) {
  .company-main-visual__img-area {
    width: 500px;
  }
}
.company-main-visual__top-message {
  width: 62.2rem;
  aspect-ratio: 622/324;
}
@media (max-width: 767px) {
  .company-main-visual__top-message {
    width: 40.7rem;
  }
}
.company-main-visual__main-text {
  font-size: 2.6rem;
  font-weight: 500;
  line-height: 1.7307692308;
  color: #fff;
  letter-spacing: 0.05em;
  transform: translateX(2.6rem) translateY(-2.9rem);
}
@media (max-width: 767px) {
  .company-main-visual__main-text {
    font-size: 2rem;
  }
}
.company-main-visual__sign {
  width: 28.4rem;
  transform: translateX(31.9rem) translateY(1.1rem);
}
@media (max-width: 767px) {
  .company-main-visual__sign {
    width: 18.8rem;
    transform: translateX(20.9rem) translateY(0.7rem);
  }
}
.company-main-visual__sign p {
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #fff;
}
.company-main-visual__sign img {
  width: 100%;
  transform: translateX(-1.9rem);
  aspect-ratio: 284/136;
}
.company-main-visual__text-area {
  z-index: 5;
  width: 1088px;
  max-width: calc(100% - 4rem);
  margin-top: 2.5rem;
  background: #fff;
  flex-shrink: 0;
  padding-block: 2.7rem 10.2rem;
  padding-inline: 3.8rem;
}
@media (max-width: 767px) {
  .company-main-visual__text-area {
    bottom: -38rem;
  }
}
.company-main-visual__text-area h3 {
  margin-bottom: 2rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #003881;
  letter-spacing: 0.3em;
}
.company-main-visual__text-area p {
  margin-bottom: 2.4rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #232323;
}

.company-company-info {
  overflow-x: hidden;
  margin-top: 0.5rem;
}
.company-company-info__title h3 {
  position: relative;
  padding-left: 2.4rem;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 4rem;
  color: #003881;
}
.company-company-info__title h3 span {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 0.7rem;
  height: 100%;
}
.company-company-info__title h3 span::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 1.3rem;
  content: "";
}
.company-company-info__title h3 span {
  background-color: #003881;
}
.company-company-info__title h3 span::before {
  background-color: #5682bc;
}
.company-company-info__content {
  margin-top: 2.1rem;
}
.company-company-info__list {
  display: flex;
  flex-direction: column;
  width: 72rem;
  height: 33.8rem;
  margin-top: 2.1rem;
  flex-wrap: wrap;
}
@media (max-width: 767px) {
  .company-company-info__list {
    width: 100%;
    height: unset;
  }
}
.company-company-info__item {
  display: flex;
  margin-bottom: 2.4rem;
}
.company-company-info__item:nth-child(3), .company-company-info__item:nth-child(5), .company-company-info__item:nth-child(4) {
  margin-bottom: 1.3rem;
}
.company-company-info__item-title {
  width: 11.9rem;
  font-size: 2rem;
  font-weight: bold;
  color: #232323;
}
.company-company-info__item-text {
  position: relative;
  width: 43.5rem;
  padding-left: 2rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #232323;
}
.company-company-info__item-text::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 0.3rem;
  height: 100%;
  background-color: #5682bc;
  content: "";
}

.company-certification-list {
  margin-top: 5rem;
}
.company-certification-list__title h3 {
  position: relative;
  padding-left: 2.4rem;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 4rem;
  color: #003881;
}
.company-certification-list__title h3 span {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 0.7rem;
  height: 100%;
}
.company-certification-list__title h3 span::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 1.3rem;
  content: "";
}
.company-certification-list__title h3 span {
  background-color: #003881;
}
.company-certification-list__title h3 span::before {
  background-color: #5682bc;
}
.company-certification-list__content {
  display: flex;
  margin-top: 2.9rem;
  gap: 4.1rem;
}
@media (max-width: 767px) {
  .company-certification-list__content {
    flex-direction: column;
    align-items: center;
  }
}
.company-certification-list__item-caption {
  margin-top: 1.2rem;
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #232323;
}

.company-gas-sales-trend {
  margin-top: 10.1rem;
}
.company-gas-sales-trend__title h3 {
  position: relative;
  padding-left: 2.4rem;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 4rem;
  color: #003881;
}
.company-gas-sales-trend__title h3 span {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 0.7rem;
  height: 100%;
}
.company-gas-sales-trend__title h3 span::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 1.3rem;
  content: "";
}
.company-gas-sales-trend__title h3 span {
  background-color: #003881;
}
.company-gas-sales-trend__title h3 span::before {
  background-color: #5682bc;
}
.company-gas-sales-trend__title h3 p {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: bold;
  font-weight: 400;
  transform: translateX(-4%);
}
.company-gas-sales-trend__content {
  margin-top: 1.5rem;
}
.company-gas-sales-trend__img {
  max-width: 1080px;
  max-height: 250px;
  aspect-ratio: 1080/250;
}

.company-history {
  margin-top: 10.1rem;
}
.company-history__title h3 {
  position: relative;
  padding-left: 2.4rem;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 4rem;
  color: #003881;
}
.company-history__title h3 span {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 0.7rem;
  height: 100%;
}
.company-history__title h3 span::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 1.3rem;
  content: "";
}
.company-history__title h3 span {
  background-color: #003881;
}
.company-history__title h3 span::before {
  background-color: #5682bc;
}
.company-history__content {
  margin-top: 2.9rem;
}
.company-history__content .paragraph {
  letter-spacing: -0.005em;
}

.history-timeline {
  position: relative;
  overflow-x: hidden;
  margin-top: 10.1rem;
}
.history-timeline::before {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: calc((100% - 1920px) / 2 + 676px);
  height: 100%;
  background-color: #1d78b4;
  content: "";
}
@media (max-width: 1920px) {
  .history-timeline::before {
    width: 35.2%;
  }
}
@media (max-width: 1280px) {
  .history-timeline::before {
    width: clamp(200px, -28px + 29.6875vw, 352px);
  }
}
@media (max-width: 767px) {
  .history-timeline::before {
    width: clamp(80px, -5.9060402685px + 26.8456375839vw, 200px);
  }
}
.history-timeline::after {
  position: absolute;
  top: 0;
  right: 0;
  display: block;
  width: 64.8%;
  width: calc((100% - 1920px) / 2 + 1244px);
  height: 100%;
  background-color: #e4effa;
  content: "";
}
@media (max-width: 1920px) {
  .history-timeline::after {
    width: 64.8%;
  }
}
@media (max-width: 1280px) {
  .history-timeline::after {
    width: clamp(568px, 28px + 70.3125vw, 928px);
  }
}
@media (max-width: 767px) {
  .history-timeline::after {
    width: clamp(240px, 5.1901565996px + 73.3780760626vw, 568px);
  }
}
.history-timeline__container {
  position: relative;
  overflow-y: hidden;
  width: 1920px;
  max-width: 100%;
  padding-bottom: 29.5rem;
  margin-inline: auto;
}
.history-timeline__container::before {
  position: absolute;
  z-index: 10;
  top: 11rem;
  left: calc((100% - 1920px) / 2 + 676px + 5.6rem + 16.7rem + 0.7rem);
  display: block;
  width: 1px;
  height: 100%;
  background-color: #ff6600;
  content: "";
}
@media (max-width: 1920px) {
  .history-timeline__container::before {
    left: calc(35.2% + 5.6rem + 16.7rem + 0.7rem);
  }
}
@media (max-width: 1280px) {
  .history-timeline__container::before {
    left: calc(clamp(200px, -28px + 29.6875vw, 352px) + 5.6rem + 16.7rem + 0.6rem);
  }
}
@media (max-width: 767px) {
  .history-timeline__container::before {
    left: calc(clamp(80px, -5.9060402685px + 26.8456375839vw, 200px) + clamp(70px, 27.0469798658px + 13.4228187919vw, 130px) - 0.775rem);
  }
}
.history-timeline__era {
  display: flex;
}
.history-timeline__year-group {
  display: flex;
  width: 35.2%;
  padding-right: 11.8rem;
  justify-content: flex-end;
  align-items: flex-start;
}
@media (max-width: 1280px) {
  .history-timeline__year-group {
    width: clamp(200px, -28px + 29.6875vw, 352px);
    padding-left: 2rem;
  }
}
@media (max-width: 767px) {
  .history-timeline__year-group {
    width: clamp(80px, -5.9060402685px + 26.8456375839vw, 200px);
    padding-inline: 0;
    justify-content: center;
  }
}
.history-timeline__year-text {
  position: relative;
  font-family: "Open Sans", sans-serif;
  font-size: 6.2rem;
  color: #fff;
}
@media (max-width: 767px) {
  .history-timeline__year-text {
    font-size: clamp(22px, 6.2505592841px + 4.9217002237vw, 44px);
    transform: translateX(-1.5rem);
  }
}
.history-timeline__year-text::after {
  position: absolute;
  top: 50%;
  right: -11.85rem;
  display: block;
  width: 10.1rem;
  height: 0.15rem;
  background-color: #fff;
  content: "";
}
@media (max-width: 767px) {
  .history-timeline__year-text::after {
    right: calc(-1 * clamp(33px, -2.7941834452px + 11.1856823266vw, 83px));
    width: clamp(30px, 0.6487695749px + 9.1722595078vw, 71px);
  }
}
.history-timeline__block {
  position: relative;
  z-index: 20;
  width: 64.8%;
  padding-left: 5.6rem;
}
@media (max-width: 1280px) {
  .history-timeline__block {
    width: clamp(568px, 28px + 70.3125vw, 928px);
  }
}
@media (max-width: 767px) {
  .history-timeline__block {
    width: clamp(240px, 5.1901565996px + 73.3780760626vw, 568px);
    padding-left: 0;
  }
}
.history-timeline__item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 10.5rem;
}
@media (max-width: 1280px) {
  .history-timeline__item {
    gap: clamp(54px, 3px + 6.640625vw, 88px);
  }
}
@media (max-width: 767px) {
  .history-timeline__item {
    gap: clamp(5px, -30.0782997763px + 10.9619686801vw, 54px);
  }
}
.history-timeline__date {
  position: relative;
  width: 130px;
  margin-top: 4.5rem;
  font-size: 2.4rem;
  font-weight: 500;
  color: #f60;
  white-space: nowrap;
  flex-shrink: 0;
}
@media (max-width: 767px) {
  .history-timeline__date {
    width: clamp(70px, 27.0469798658px + 13.4228187919vw, 130px);
    padding-left: 1rem;
    font-size: clamp(10px, 4.9888143177px + 1.5659955257vw, 17px);
    transform: translateY(-0.8rem);
  }
}
.history-timeline__date .timeline__marker {
  position: absolute;
  top: 0.7rem;
  left: 16.7rem;
  width: 1.4rem;
  height: 1.4rem;
  border: 0.15rem solid #ff6600;
  border-radius: 50%;
  background-color: #fff;
}
@media (max-width: 767px) {
  .history-timeline__date .timeline__marker {
    top: 0.4rem;
    right: 0;
    left: unset;
  }
}
.item-1935-08 .history-timeline__date {
  margin-top: 5.2rem;
}
.item-1945-09 .history-timeline__date {
  margin-top: 5rem;
}
.item-1973-06 .history-timeline__date {
  margin-top: 3.3rem;
}
.item-1974-07 .history-timeline__date {
  margin-top: 5.3rem;
}
.item-1978-05 .history-timeline__date {
  margin-top: 5.3rem;
}
.item-2006-02 .history-timeline__date {
  margin-top: 5.3rem;
}
.item-2007-11 .history-timeline__date {
  margin-top: 5.3rem;
}
.item-2009-07 .history-timeline__date {
  margin-top: 5.3rem;
}
.item-2016-05 .history-timeline__date {
  margin-top: 4.9rem;
}
.item-2023-08 .history-timeline__date {
  margin-top: 4.9rem;
}
.item-2025-03 .history-timeline__date {
  margin-top: 5.4rem;
}
.history-timeline__content {
  width: 54rem;
  margin-top: 4.8rem;
}
@media (max-width: 767px) {
  .history-timeline__content {
    width: clamp(165px, 11.8008948546px + 47.8747203579vw, 379px);
    padding-right: 2rem;
    transform: translateY(-0.8rem);
  }
  .history-timeline__content figure {
    max-width: 90%;
  }
}
.item-1935-08 .history-timeline__content {
  margin-top: 5.3rem;
}
.item-1945-08 .history-timeline__content {
  margin-top: 4rem;
}
.item-1945-09 .history-timeline__content {
  margin-top: 5rem;
}
.item-1950-07 .history-timeline__content a {
  position: relative;
  display: flex;
  width: 35rem;
  max-width: 90%;
  margin-top: 1.3rem;
  border: 0.75px solid #003881;
  background: #fff;
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.2;
  color: #003881;
  letter-spacing: -0.08em;
  aspect-ratio: 350/60;
  justify-content: center;
  align-items: center;
}
.item-1950-07 .history-timeline__content a::after {
  position: absolute;
  right: 1.2rem;
  width: 0;
  height: 0;
  border-top: 0.822rem solid #003881;
  border-right: 0.6775rem solid transparent;
  border-left: 0.6775rem solid transparent;
  content: "";
  transform: rotate(270deg);
}
.item-1966-02 .history-timeline__content {
  margin-top: 4.3rem;
}
.item-1973-06 .history-timeline__content {
  margin-top: 3rem;
}
.item-1974-07 .history-timeline__content {
  margin-top: 5rem;
}
.item-1978-05 .history-timeline__content {
  margin-top: 5.3rem;
}
.item-2004-10 .history-timeline__content {
  margin-top: 4rem;
}
.item-2006-02 .history-timeline__content {
  margin-top: 5rem;
}
.item-2009-07 .history-timeline__content {
  margin-top: 5.3rem;
}
.item-2016-04 .history-timeline__content {
  margin-top: 4.8rem;
}
.item-2023-08 .history-timeline__content {
  margin-top: 4.9rem;
}
.item-2025-03 .history-timeline__content {
  margin-top: 5.4rem;
}
.history-timeline__text {
  font-size: 1.6rem;
  font-weight: 500;
  line-height: 1.5;
  color: #232323;
}
.history-timeline .era-1920 .history-timeline__year-group {
  padding-top: 7.5rem;
}
.history-timeline .era-1920 .history-timeline__block {
  margin-top: 5.3rem;
}
.history-timeline .era-1930 .history-timeline__year-group {
  padding-top: 8.5rem;
}
.history-timeline .era-1930 .history-timeline__block {
  margin-top: 6rem;
}
.history-timeline .era-1940 .history-timeline__year-group {
  padding-top: 9.5rem;
}
.history-timeline .era-1940 .history-timeline__block {
  margin-top: 7.3rem;
}
.history-timeline .era-1950 .history-timeline__year-group {
  padding-top: 8.8rem;
}
.history-timeline .era-1950 .history-timeline__block {
  margin-top: 6.4rem;
}
.history-timeline .era-1960 .history-timeline__year-group {
  padding-top: 9rem;
}
.history-timeline .era-1960 .history-timeline__block {
  margin-top: 6.8rem;
}
.history-timeline .era-1970 .history-timeline__year-group {
  padding-top: 6rem;
}
.history-timeline .era-1970 .history-timeline__block {
  margin-top: 3.8rem;
}
.history-timeline .era-1980 .history-timeline__year-group {
  padding-top: 2.2rem;
}
.history-timeline .era-1990 .history-timeline__year-group {
  padding-top: 6.5rem;
}
.history-timeline .era-1990 .history-timeline__block {
  margin-top: 4rem;
}
.history-timeline .era-2000 .history-timeline__year-group {
  padding-top: 1.5rem;
}
.history-timeline .era-2000 .history-timeline__block {
  margin-top: -0.6rem;
}
.history-timeline .era-2010 .history-timeline__year-group {
  padding-top: 8.5rem;
}
.history-timeline .era-2010 .history-timeline__block {
  margin-top: 6.2rem;
}
.history-timeline .era-2020 .history-timeline__year-group {
  padding-top: 8.3rem;
}
.history-timeline .era-2020 .history-timeline__block {
  margin-top: 6.4rem;
}
.history-timeline .kyokasho-setsuritsu {
  width: 42.9rem;
  margin-top: 1.5rem;
  aspect-ratio: 429/176;
}
.history-timeline .sogyo {
  width: 13.4rem;
  margin-top: 1.2rem;
  aspect-ratio: 134/176;
}
.history-timeline .sale-event {
  width: 30.6rem;
  margin-top: 1.4rem;
  aspect-ratio: 306/176;
}
.history-timeline .aoyamamasataka {
  width: 15.3rem;
  margin-top: 0.58rem;
  transform: translateX(2.8rem);
  aspect-ratio: 153/179;
}
.history-timeline .device-adjustment {
  width: 26rem;
  margin-top: 1.7rem;
  aspect-ratio: 260/176;
}
.history-timeline .gas-holder {
  width: 26rem;
  margin-top: 0.7rem;
  aspect-ratio: 260/322;
}
.history-timeline .aoyamamoriharu {
  width: 15.3rem;
  margin-top: 0.58rem;
  transform: translateX(2.8rem);
  aspect-ratio: 153/179;
}
.history-timeline .agreement-signing {
  width: 26rem;
  margin-top: 1.5rem;
  aspect-ratio: 260/176;
}