.simple-header {
  width: 100%;
  height: 77px;
  background-color: #317f93;
  box-sizing: border-box;
  position: relative;
  z-index: 100;
  display: flex;
  align-items: center;
}
.simple-header__inner {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0 40px;
  display: flex;
  align-items: center;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .simple-header__inner {
    padding: 0 20px;
  }
}
.simple-header__logo {
  margin: 0;
  padding: 20px 0;
  display: flex;
  align-items: center;
  height: 77px;
  box-sizing: border-box;
}
.simple-header__logo-link {
  display: flex;
  align-items: flex-end;
  text-decoration: none;
  gap: 10px;
}
.simple-header__logo-img {
  height: 37px;
  width: auto;
  display: block;
}
@media screen and (max-width: 767px) {
  .simple-header__logo-img {
    height: 28px;
  }
}
.simple-header__logo-text {
  font-family: "Roboto", sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
@media screen and (max-width: 767px) {
  .simple-header__logo-text {
    font-size: 10px;
    margin-bottom: 3px;
  }
}
@media screen and (max-width: 767px) {
  .simple-header {
    height: 60px;
  }
  .simple-header__logo {
    padding: 11px 0;
    height: 60px;
  }
}

.tk-mv {
  width: 100%;
  height: calc(100vh - 77px);
  position: relative;
  overflow: hidden;
  background-color: #000;
}
@media screen and (max-width: 767px) {
  .tk-mv {
    height: auto;
    min-height: calc(100dvh - 60px);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}
.tk-mv__slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.tk-mv__slide {
  width: 100%;
  height: 100%;
  position: relative;
}
.tk-mv__slide::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.5) 100%
  );
  z-index: 2;
}
.tk-mv__bg-img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
  -o-object-position: center;
  object-position: center;
}
.tk-mv__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .tk-mv__overlay {
    position: relative;
    width: 100%;
    height: auto;
  }
}
.tk-mv__inner {
  width: 100%;
  max-width: 1104px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
  color: #fff;
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .tk-mv__inner {
    padding: 0 16px;
  }
}
.tk-mv__title {
  font-size: 60px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.3;
  margin-bottom: 35px;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
}
@media screen and (max-width: 767px) {
  .tk-mv__title {
    font-size: 28px;
    margin-bottom: 20px;
  }
}
.tk-mv__lead {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.04em;
  margin-bottom: 45px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}
@media screen and (max-width: 767px) {
  .tk-mv__lead {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 30px;
    letter-spacing: 0;
  }
}
.tk-mv__body {
  letter-spacing: 0.03em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}
.tk-mv__body-text {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.9;
  margin-bottom: 30px;
}
@media screen and (max-width: 767px) {
  .tk-mv__body-text {
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 24px;
  }
}
.tk-mv__body-highlight {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.8;
  color: #fff;
}
@media screen and (max-width: 767px) {
  .tk-mv__body-highlight {
    font-size: 14px;
    line-height: 1.6;
  }
}

.tk-mv__inner.js-fadein-trigger {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 2s cubic-bezier(0.25, 1, 0.5, 1),
    transform 1.2s cubic-bezier(0.25, 1, 0.5, 1);
}
.tk-mv__inner.js-fadein-trigger.is-fadein {
  opacity: 1;
  transform: translateY(0);
}

.tk-about {
  width: 100%;
  background-color: #fff;
  padding: 100px 0;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .tk-about {
    padding: 60px 0;
  }
}
.tk-about__inner {
  width: 100%;
  max-width: 1104px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}
.tk-about__container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  text-align: left;
}
.tk-about__heading {
  font-size: 24px;
  font-weight: 700;
  color: #000;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 15px;
}
.tk-about__heading::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 29px;
  background-color: #317f93;
  transform: skewX(-20deg);
  flex-shrink: 0;
}
@media screen and (max-width: 767px) {
  .tk-about__heading {
    font-size: 18px;
    margin-bottom: 24px;
    gap: 10px;
  }
  .tk-about__heading::before {
    width: 5px;
    height: 22px;
  }
}
.tk-about__content {
  margin-bottom: 60px;
}
@media screen and (max-width: 767px) {
  .tk-about__content {
    margin-bottom: 40px;
  }
}
.tk-about__text {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: #000;
  margin-bottom: 30px;
}
.tk-about__text:last-child {
  margin-bottom: 0;
}
@media screen and (max-width: 767px) {
  .tk-about__text {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
  }
  .tk-about__text br {
    display: none;
  }
}
@media screen and (max-width: 767px) and (max-width: 480px) {
  .tk-about__text br {
    display: none;
  }
}
.tk-about__btn-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
}
.tk-about__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 380px;
  height: 64px;
  background-color: #317f93;
  color: #fff;
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 32px;
  box-shadow: 0 4px 12px rgba(49, 127, 147, 0.15);
  transition: background-color 0.3s ease, transform 0.3s ease,
    box-shadow 0.3s ease;
  box-sizing: border-box;
  letter-spacing: 0.04em;
}
@media (hover: hover) {
  .tk-about__btn:hover {
    background-color: #256272;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(49, 127, 147, 0.25);
  }
}
@media screen and (max-width: 767px) {
  .tk-about__btn {
    height: 54px;
    font-size: 14px;
    max-width: 300px;
  }
}

.tk-project {
  width: 100%;
  height: auto;
  position: relative;
  overflow: hidden;
  padding: 120px 0;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .tk-project {
    padding: 70px 0;
  }
}
.tk-project__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.tk-project__bg::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2;
}
.tk-project__bg-img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
  -o-object-position: center;
  object-position: center;
}
.tk-project__inner {
  width: min(100% - 32px, 1104px);
  margin: 0 auto;
  padding: 0;
  position: relative;
  z-index: 10;
  box-sizing: border-box;
}
.tk-project__container {
  width: 100%;
  margin: 0 auto;
  text-align: center;
  color: #fff;
}
.tk-project__heading {
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  text-shadow: 0 4px 14px rgba(0, 0, 0, 0.8);
}
.tk-project__heading-sub {
  font-size: 24px;
  font-weight: 500;
}
@media screen and (max-width: 767px) {
  .tk-project__heading {
    font-size: 20px;
    margin-bottom: 24px;
  }
  .tk-project__heading-sub {
    font-size: 16px;
    display: block;
    margin-top: 4px;
  }
}
.tk-project__slider {
  width: 100%;
  margin-bottom: 60px;
  text-align: left;
}
@media screen and (max-width: 767px) {
  .tk-project__slider {
    margin-bottom: 24px;
    overflow: visible !important;
  }
}
.tk-project__card {
  background-color: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 30px 24px;
  box-sizing: border-box;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
@media screen and (max-width: 767px) {
  .tk-project__card {
    padding: 16px;
    border-radius: 12px;
  }
}
.tk-project__card-title {
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-top: 0;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}
@media screen and (max-width: 767px) {
  .tk-project__card-title {
    font-size: 15px;
    margin-bottom: 12px;
    padding-bottom: 8px;
  }
}
.tk-project__card-text {
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
}
@media screen and (max-width: 767px) {
  .tk-project__card-text {
    font-size: 13px;
    line-height: 1.7;
  }
}
.tk-project__foot {
  margin: 0 auto 50px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
@media screen and (max-width: 767px) {
  .tk-project__foot {
    text-align: left;
    margin-bottom: 35px;
    gap: 20px;
  }
}
.tk-project__foot-text {
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.9;
  letter-spacing: 0.04em;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
}
@media screen and (max-width: 767px) {
  .tk-project__foot-text {
    font-size: 13px;
    line-height: 1.7;
  }
}
.tk-project__foot-highlight {
  font-family: "Sippori Mincho", "Noto Serif JP", serif;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.9;
  letter-spacing: 0.04em;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
}
@media screen and (max-width: 767px) {
  .tk-project__foot-highlight {
    font-size: 13px;
    line-height: 1.7;
  }
}
.tk-project__btn-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 0;
}
.tk-project__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 380px;
  height: 64px;
  background-color: #fff;
  color: #317f93;
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 32px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease,
    box-shadow 0.3s ease;
  box-sizing: border-box;
  letter-spacing: 0.04em;
}
@media (hover: hover) {
  .tk-project__btn:hover {
    background-color: #317f93;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  }
}
@media screen and (max-width: 767px) {
  .tk-project__btn {
    height: 54px;
    font-size: 14px;
    max-width: 300px;
  }
}
.tk-project__toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 700;
  padding: 12px 36px;
  border-radius: 30px;
  cursor: pointer;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  transition: all 0.3s ease;
}
.tk-project__toggle-btn:hover {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.8);
}
.tk-project__toggle-btn-icon {
  position: relative;
  width: 12px;
  height: 12px;
  display: inline-block;
}
.tk-project__toggle-btn-icon::before,
.tk-project__toggle-btn-icon::after {
  content: "";
  position: absolute;
  background-color: #fff;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.tk-project__toggle-btn-icon::before {
  top: 5px;
  left: 0;
  width: 12px;
  height: 2px;
}
.tk-project__toggle-btn-icon::after {
  top: 0;
  left: 5px;
  width: 2px;
  height: 12px;
}
.tk-project__toggle-btn.is-open .tk-project__toggle-btn-icon::after {
  transform: rotate(90deg);
  opacity: 0;
}
@media screen and (max-width: 767px) {
  .tk-project__toggle-btn {
    font-size: 14px;
    padding: 10px 24px;
  }
}
.tk-project__toggle-content {
  display: none;
  margin-top: 40px;
}
@media screen and (max-width: 767px) {
  .tk-project__toggle-content {
    margin-top: 24px;
  }
}

.tk-upcoming {
  width: 100%;
  background-color: #fff;
  padding: 140px 0;
}
@media screen and (max-width: 767px) {
  .tk-upcoming {
    padding: 90px 0;
  }
}
.tk-upcoming__inner {
  width: 100%;
  max-width: 1104px;
  margin: 0 auto;
  padding: 0 20px;
  text-align: center;
  box-sizing: border-box;
}
.tk-upcoming__heading {
  font-size: 32px;
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-weight: 700;
  color: #000;
  line-height: 1.4;
  letter-spacing: 0.06em;
}
@media screen and (max-width: 767px) {
  .tk-upcoming__heading {
    font-size: 18px;
  }
}

.tk-contact {
  width: 100%;
  background-color: #fff;
  padding: 100px 0 140px;
  box-sizing: border-box;
}
@media screen and (max-width: 767px) {
  .tk-contact {
    padding: 60px 0 80px;
  }
}
.tk-contact__inner {
  width: 100%;
  max-width: 1104px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}
.tk-contact__container {
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  text-align: left;
}
.tk-contact__heading {
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 24px;
  font-weight: 700;
  color: #000;
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.tk-contact__heading::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 24px;
  background-color: #317f93;
  transform: skewX(-20deg);
  flex-shrink: 0;
}
@media screen and (max-width: 767px) {
  .tk-contact__heading {
    font-size: 18px;
    gap: 8px;
  }
  .tk-contact__heading::before {
    width: 4px;
    height: 18px;
  }
}
.tk-contact__sub-heading {
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: #000;
  line-height: 1.5;
  letter-spacing: 0.03em;
  margin-top: 0;
  margin-bottom: 40px;
}
@media screen and (max-width: 767px) {
  .tk-contact__sub-heading {
    font-size: 14px;
    margin-bottom: 24px;
  }
}
.tk-contact__content {
  margin-bottom: 50px;
}
@media screen and (max-width: 767px) {
  .tk-contact__content {
    margin-bottom: 35px;
  }
}
.tk-contact__text {
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: #000;
  margin-bottom: 28px;
}
.tk-contact__text:last-child {
  margin-bottom: 0;
}
@media screen and (max-width: 767px) {
  .tk-contact__text {
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 20px;
  }
  .tk-contact__text br {
    display: none;
  }
}
.tk-contact__info {
  font-family: "Roboto", "Noto Sans JP", sans-serif;
  margin-top: 40px;
}
@media screen and (max-width: 767px) {
  .tk-contact__info {
    margin-top: 30px;
  }
}
.tk-contact__info-label {
  font-size: 16px;
  font-weight: 700;
  color: #000;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
@media screen and (max-width: 767px) {
  .tk-contact__info-label {
    font-size: 14px;
    margin-bottom: 10px;
  }
}
.tk-contact__info-body {
  padding-left: 5px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
@media screen and (max-width: 767px) {
  .tk-contact__info-body {
    padding-left: 0;
    gap: 12px;
  }
}
.tk-contact__info-text {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: #000;
  margin: 0;
  letter-spacing: 0.02em;
}
.tk-contact__info-text--company {
  font-weight: 700;
}
.tk-contact__info-text--mail {
  font-weight: 700;
}
@media screen and (max-width: 767px) {
  .tk-contact__info-text {
    font-size: 13px;
    line-height: 1.5;
  }
}
.tk-contact__info-link {
  color: #317f93;
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
}
.tk-contact__info-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background-color: #317f93;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}
@media (hover: hover) {
  .tk-contact__info-link:hover {
    color: #256272;
  }
  .tk-contact__info-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
    background-color: #256272;
  }
}

.footer {
  padding: 60px 0 24px;
  background-color: rgb(240, 240, 240);
}
.footer__list {
  margin: 0 auto 24px;
  width: min(100% - 32px, 600px);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.footer__list li {
  position: relative;
  padding: 0 10px;
}
.footer__list li:not(:first-child)::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 70%;
  background-color: lightgrey;
}
@media screen and (max-width: 767px) {
  .footer__list li:not(:first-child)::before {
    background-color: #fff;
  }
}
.footer__list a {
  font-size: 14px;
  color: #0c0d14;
  white-space: nowrap;
}
.footer .copyright {
  font-size: 12px;
  color: grey;
  text-align: center;
}