@charset "utf-8";

/* ============
Main: FV
============ */
.fv {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.fv__container {
  position: relative;
  height: 70vh;
}

.fv__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--electron-blue);
  padding-left: 4%;
}

.top--en .fv__title,
.top--en .fv__subtitle {
  font-family: "Roboto", sans-serif;
}

.fv__subtitle {
  margin-top: 112px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--electron-blue);
  padding-right: 4%;
  text-align: right;
  line-height: 1.5;
}

.top--en .fv__subtitle--en {
  margin-top: 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--energy-yellow);
  letter-spacing: 0.4px;
}

.fv__floating-text {
  position: absolute;
  left: 50%;
  top: clamp(8rem, 12vh, 7rem);
  transform: translateX(-50%);
  width: 100vw;
  overflow: hidden;
  pointer-events: none;
}

/* 中身（横に流れる部分） */
.fv__floating-text-inner {
  display: inline-block;
  white-space: nowrap;
  font-size: clamp(3rem, 9vw, 8rem);
  font-weight: 700;
  color: var(--spectral-white);
  opacity: 0.5;
  animation: fvFloating 22s linear infinite;
}

.fv__floating-text-item {
  margin-right: 3rem;
}

/* 横方向の無限スクロール */
@keyframes fvFloating {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

.atom-scroll-indicator {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 48px;
  height: 48px;
  animation: floatY 2.4s ease-in-out infinite;
}

@keyframes floatY {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-7px);
  }

  100% {
    transform: translateY(0);
  }
}

.atom-scroll-indicator::after {
  content: 'scroll';
  color: #0D45A4;
  text-align: center;
  font-family: "Roboto", sans-serif;
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0.192px;
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-text {
  color: #0D45A4;
  text-align: center;
  font-family: "Roboto", sans-serif;
  font-size: 0.8rem;
  font-style: normal;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.192px;
}


@media (min-width: 600px) {
  .fv__floating-text {
    top: clamp(6rem, 6vh, 7rem);
  }
}

@media (min-width: 769px) {
  .fv__floating-text {
    top: clamp(3rem, 4vh, 7rem);
  }
}

@media (min-width: 1024px) {
  .fv__container {
    position: relative;
    height: 80vh;
  }

  .fv__title {
    font-size: 3.5rem;
    margin-top: 32vh;
    padding-left: 0;
    letter-spacing: 1.8px;
  }

  .fv__subtitle {
    margin-top: 120px;
    font-size: 2rem;
    padding-right: 4%;
    line-height: 1.5;
    letter-spacing: 0.4px;

  }

  .fv__subtitle--en {
    margin-top: 16px;
    font-size: 1.26rem;
  }

  .fv__floating-text {
    top: clamp(0rem, 3.6vh, 7rem);
  }

  .atom-scroll-indicator {
    bottom: 20vh;
    width: 56px;
    height: 56px;
  }
}

/* ============
About
============ */
.about {
  scroll-margin-top: 80px;
}

.about .l-container {
  width: auto;
  height: auto;
  background: rgba(256, 256, 256, 0.3);
  padding-top: 64px;
  padding-bottom: 48px;
}

.about__profile img {
  width: 72%;
  aspect-ratio: 3677/2686;
  flex-shrink: 0;
  margin: 40px auto var(--contentPadding);
}

.about__name {
  color: var(--electron-blue);
  font-size: 1.4rem;
  font-weight: 600;
  text-align: center;
  vertical-align: middle;
  margin-top: var(--contentPadding);
}

.about__name-en {
  font-family: "Roboto", sans-serif;
  font-size: 1.5rem;
  margin-left: 8px;
}

.about__degree,
.about__field {
  text-align: center;
  margin-top: var(--contentPadding);
  font-size: 1.125;
  line-height: 1.4;
}

.about__field-label {
  color: var(--photon-blue);
}

.about__field-name {
  color: var(--electron-blue);
  margin-left: var(--contentPadding);
  font-weight: 500;
}

.about__position {
  display: flex;
  text-align: center;
  margin-top: var(--contentPadding);
  gap: 8px;
}

.about__position:nth-of-type(2) {
  margin-top: 16px;
}

.about__position::before {
  content: '';
  display: block;
  background-image: url(../images/atom.svg);
  background-repeat: no-repeat;
  background-size: contain;
  width: 24px;
  height: 24px;
  margin-top: 4px;
  flex: 0 0 24px;
  flex-shrink: 0;
}


@media (min-width: 1024px) {
  .about .l-container {
    max-width: 100%;
  }

  .about__profile {
    display: flex;
    justify-content: center;
    width: fit-content;
    gap: 32px;
    margin: 0 auto;
    align-items: center;
  }

  .about__profile img {
    width: 40%;
    height: auto;
    max-width: 380px;
    aspect-ratio: 3677/2686;
    flex-shrink: 0;
  }

  .about__profile--wrap {
    text-align: left;
    width: 60%;
  }

  .about__name {
    text-align: start;
  }

  .about__field--wrap {
    display: flex;
    justify-content: flex-start;
    gap: 32px;
    font-size: 1.25rem;
    white-space: nowrap;
  }

  .about__positions {
    font-size: 1.25rem;
    white-space: nowrap;
  }

  .about__position {
    text-align: left;
  }
}

@media (min-width: 1245px) {
  .brSp--1245 {
    display: none;
  }
}

/* ======= 経歴エリア =======*/
.about__career {
  max-width: var(--contentWidth);
  margin: 40px auto;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
}

.about__career-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .3s ease, opacity .3s ease;
}

.about__career-panel--open {
  opacity: 1;
}

/* ボタン本体 */
.about__career-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 20px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.about__career-toggle-label {
  color: #0D45A4;
  font-size: 1.15rem;
  font-weight: 500;
}

/* ＋の枠 */
.about__career-toggle-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
}

/* ＋の線共通 */
.about__career-toggle-line {
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--electron-blue);
  border-radius: 1px;
  transform: translate(-50%, -50%);
  transition: transform .3s ease, opacity .3s ease;
}

/* 横線（－） */
.about__career-toggle-line--horizontal {
  width: 16px;
  height: 1.5px;
}

/* 縦線（｜） */
.about__career-toggle-line--vertical {
  width: 1.5px;
  height: 16px;
}

/* 開いた状態（縦線を消して「－」にする） */
.about__career-toggle--open .about__career-toggle-line--vertical {
  opacity: 0;
}

/* 閉じるリンク風ボタン */
.about__career-close {
  margin: 24px auto;
  display: block;
  border: none;
  background: none;
  padding: 0;
  font: inherit;
  color: var(--electron-blue);
  cursor: pointer;
  text-align: center;
}

.about__career-list {
  margin: 40px var(--contentPadding);
}

.about__career-item {
  position: relative;
  padding: var(--contentPadding) 0;
}

.about__career-item::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--spectral-white);
}

.about__career-item div {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about__career-year {
  width: 50%;
  color: #7F96CF;
  font-family: "Roboto", sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}

.about__career-title {
  width: 50%;
  color: var(--electron-blue);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.4;
}

.about__career-text {
  width: 100%;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.4;
  margin-top: 8px;
}

.top--en .brSp--en,
.top--en .brSp--1245 {
  display: block;
}

@media (min-width: 1024px) {
  .about__career-toggle-label {
    font-size: 1.3rem;
    margin: 12px auto;
  }

  .about__career-toggle-icon {
    right: 32px;
    top: 48%;
  }

  /* 横線（－） */
  .about__career-toggle-line--horizontal {
    width: 20px;
    height: 2px;
  }

  /* 縦線（｜） */
  .about__career-toggle-line--vertical {
    width: 2px;
    height: 20px;
  }

  .about__career {
    width: 64%;
    max-width: 1280px;
    margin: 48px auto 80px;
  }

  .about__career-list {
    margin: 0 var(--contentPadding);
    padding: 32px;
  }

  .about__career-item {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 32px;
    padding: 16px 0;
  }

  .about__career-item div {
    width: 54%;
  }

  .about__career-year {
    width: 50%;
    font-size: 1.35rem;
  }

  .about__career-title {
    font-size: 1.15rem;
  }

  .about__career-text {
    margin-top: 0;
    font-size: 1.15rem;
  }

.top--en .about__career-year {
    font-size: 1.14rem;
  }

.top--en .about__career-title {
    font-size: 1.06rem;
  }

.top--en .about__career-text {
    font-size: 1.06rem;
  }

.top--en .about__career-text .brsp {
    display: block;
  }
}

/* ======= 経歴エリア END =======*/


/* ============
Approach
============ */
/* ======暗転用オーバーレイ======*/
.bg-video__overlay {
  position: fixed;
  inset: 0;
  background: #020b14;
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s ease;
  z-index: 1;
}

/* Approach 中だけ濃くする */
body.is-approach-dark .bg-video__overlay {
  opacity: 0.55;
}

/* セクション本体 */
.approach {
  position: relative;
  z-index: 2;
  /* オーバーレイより上 */
  color: var(--ink-black, #020b14);
  transition: color 0.4s ease;
}

/* Approach セクション自体も暗く・文字を白に */
.approach::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(2, 11, 20, 0);
  transition: background .6s ease;
}

body.is-approach-dark .approach::before {
  background: rgba(2, 11, 20, 0.36);
}

body.is-approach-dark .approach h2 {
  color: var(--energy-yellow, #f7ba74);
}

body.is-approach-dark .approach,
body.is-approach-dark .approach p,
body.is-approach-dark .approach h3 {
  color: var(--spectral-white, #f5f9fe);
}

/*  ====== Approach　中身 ====== */
.approach__container {
  padding: 32px 0;
  max-width: 690px;
  margin: 0 auto;
}

.approach__heading {
  padding-top: 80px;
}

.approach__lead {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.approach__lead-text {
  font-size: 1.2rem;
  line-height: 1.8;
  margin: 0 auto;
}

.approach__lead-image {
  margin: 0 auto;
}

.approach__lead-image img {
  width: var(--contentWidth);
  height: auto;
  flex-shrink: 0;
  aspect-ratio: 510/503;
  margin: 0 auto;
  max-width: 350px;
}

.approach__description {
  margin: 40px auto;
  font-size: 1rem;
  line-height: 1.8;
  font-weight: 300;
}

.approach__description-text {
  margin-top: var(--contentPadding);
}


.approach__link-wrap {
  margin-top: 48px;
  text-align: right;
}

.approach__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.8;
  text-decoration: none;
  border-bottom: 0.5px solid var(--energy-yellow);
  padding-bottom: 2px;
  margin-bottom: 40px;
  color: var(--spectral-white);
}

.approach__link:hover {
  color: #f7ba74;
  transition: color .4s ease;
}

.approach__icon {
  width: 24px;
  height: 8px;
  flex-shrink: 0;
}

.approach__icon path {
  transform-origin: 50% 50%;
  transform: scaleY(3);
}

.approach__item {
  margin-top: 80px;
  font-size: 1rem;
  line-height: 1.8;
}

.approach__item-title {
  position: relative;
  padding-left: 12px;
  border-left: 5px solid var(--energy-yellow);
  display: inline-block;
  font-size: 1.34rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 8px;
}

.approach__item-subTitle {
  display: block;
  font-size: 0.86rem;
  color: var(--energy-yellow);
  font-family: "Roboto", sans-serif;
  margin-left: 16px;
}

html[lang="en"] .approach__item-subTitle {
  font-family: "Noto Sans JP", sans-serif;
}

.approach__item-text {
  margin-top: var(--contentPadding);
  font-weight: 300;
}

.approach__item-image {
  width: 100%;
  max-width: 400px;
  margin: 24px auto 0;
}

.approach__item-image img {
  display: block;
  width: 100%;
  height: auto;
}

.approach__link--bottom {
  margin-bottom: 48px;
}

@media (min-width: 470px) {
  .approach__lead-text {
    text-align: center;
  }

  .brTb {
    display: none;
  }
}

@media (min-width: 769px) {
  .approach__lead-text {
    font-size: 1.4rem;
  }

  .approach__lead-image {
    width: 50%;
  }

  .approach__item-image {
    width: 60%;
  }
}

@media (min-width: 1024px) {
  .approach__container {
    padding: 32px 0;
    max-width: 1440px;
  }

  .approach__intro {
    max-width: 1440px;
    width: 80%;
    margin: 40px auto 0;
  }

  .approach__lead {
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: top;
    gap: 32px;
  }

  .brTb {
    display: block;
    text-align: left;
  }

  .approach__lead-text {
    width: 60%;
    font-size: 1.6rem;
    margin-top: 32px;
    text-align: left;
  }

.top--en .approach__lead-text,
.top--en .approach__item-title {
    font-size: 1.5rem;
  }

.top--en .approach__description-text,
.top--en .approach__item-text {
    font-size: 1.04rem;
    ;
  }

  .approach__lead-image {
    width: 40%;
  }

  .approach__description {
    width: 60%;
    font-size: 1.08rem;
    margin: -10% 0 0 0;
  }
  .top--en .approach__description {
      margin-top: -4%;
  }

  .approach__link-wrap {
    font-size: 1.4rem;
  }

  .approach__link-bottom {
    margin-right: 10.6%;
  }

  .approach__list {
    max-width: 1440px;
    width: 80%;
    margin: 80px auto;
  }

  .approach__item {
    display: flex;
    justify-content: space-between;
    gap: 6%;
    align-items: center;
    margin-top: 80px;
  }

  .approach__item:nth-of-type(1),
  .approach__item:nth-of-type(3) {
    display: flex;
    flex-direction: row-reverse;
    justify-content: space-between;
  }

  .approach__item-body {
    width: 56%;
  }

  .approach__item-title {
    font-size: 1.6rem;
  }

  .approach__item-text {
    font-size: 1.08rem;
  }

  .approach__item-image {
    width: 38%;
  }

  .approach__item-image img {
    max-width: 320px;
    margin: 0 auto;
  }
}

@media (min-width: 1190px) {
  .approach__intro {
    margin: 40px auto 0;
  }

  .approach__lead-text {
    width: 60%;
    font-size: 1.8rem;
  }

  .approach__description {
    width: 54%;
    margin: -12% 0 0 0;
  }
    .top--en .approach__description {
      margin-top: -12%;
  }

  .approach__list {
    margin: 80px auto;
  }

  .approach__item-subTitle {
    font-size: 0.96rem;
  }

  .approach__item-image img {
    max-width: 380px;
  }
}

@media (min-width: 1300px) {
  .approach__item-image img {
    max-width: 400px;
  }
}


/* ============
News
============ */
.section-news--home .l-container {
  width: auto;
  height: auto;
  background: rgba(256, 256, 256, 0.5);
  padding-top: 48px;
  padding-bottom: 48px;
}

html[lang="en"] .section-news--home {
  font-family: "Noto Sans JP", sans-serif;
}

.news__heading {
  margin-top: 48px;
}

.news__list {
  margin: 40px var(--contentPadding);
}

.news__item {
  position: relative;
  padding: var(--contentPadding) 0;
}

.news__item::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--spectral-white);
}

.news__item:nth-of-type(3)::before {
  display: none;
}

.news__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 16px;
  text-decoration: none;
  color: var(--ink-black);
  transition: color .2s ease;
}

.news__link:hover,
.news__link:active {
  color: #c6742d;
}

.news__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.news__icon {
  width: 24px;
  height: 8px;
  flex-shrink: 0;
}

.news__icon path {
  transform-origin: 50% 50%;
  transform: scaleY(3);
  /* 1.08〜1.15くらいで微調整してみて */
}

.news__link:hover,
.news__link:active {
  color: #c6742d;
}

.news__date {
  width: fit-content;
  color: #7F96CF;
  font-family: "Roboto", sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
}

.news__title {
  width: 100%;
  font-size: 1rem;
  line-height: 1.4;
}

.news__more {
  display: block;
  border: none;
  background: none;
  padding: 0;
  color: var(--electron-blue);
  font-size: 0.98rem;
  cursor: pointer;
  text-align: end;
  margin-right: 8px;
}

.news__more span {
  display: block;
  font-size: 0.78rem;
  color: var(--photon-blue);
}

.news__more:hover,
.news__more span:hover,
.news__more:active,
.news__more span:active {
  color: #c6742d;
  transition: color .4s ease;
}

@media (min-width: 1024px) {
  .section-news .l-container {
    max-width: none;
  }

  .news__container {
    max-width: 1440px;
    margin: 0 auto;
  }

  .news__heading {
    margin-top: 32px;
  }

  .news__list {
    margin: 0;
  }

  .news__item {
    padding: 16px 0;
    width: 80%;
    margin: 0 auto;
  }

  .news__date {
    font-size: 1.4rem;
  }

  .news__title {
    font-size: 1.18rem;
  }

  .news__more {
    margin: 24px auto 0;
  }
}


/* ============
contact
============ */
.section-contact .l-container {
  width: auto;
  height: auto;
  padding-top: 64px;
  padding-bottom: 48px;
}

.contact__wrap {
  text-align: center;
  margin-top: 24px;
  color: var(--electron-blue);
  font-size: 1rem;
  line-height: 1.7;
}

.contact__address {
  text-align: start;
  margin: var(--contentPadding) auto;
  width: fit-content;
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact__address span {
  font-size: 0.8rem;
  display: block;
}

.contact__address svg {
  margin-top: 4px;
}

@media (min-width: 1024px) {
  .section-contact .l-container {
    max-width: none;
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .contact__container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 10%;
  }

  .contact__heading {
    width: 24%;
  }

  .contact__wrap {
    width: 58%;
    text-align: left;
    font-size: 1.125rem;
  }

  .contact__addresses {
    display: flex;
    justify-content: space-between;
    width: fit-content;
    gap: 30%;
  }

  .contact__address {
    width: fit-content;
    white-space: nowrap;
    letter-spacing: 0.6px;
  }

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

  .contact__address .map-icon,
  .contact__address .letter-icon {
    width: 28px;
    height: 28px;
  }
}