* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --main-color: #1a3a5c;
  --accent-color: #00b4d8;
  --text-color: #2d2d2d;
  --bg-color: #ffffff;
  --sb-bg: #f8f9fa;
}

body {
  background-color: var(--bg-color);
  font-family: Noto Sans JP, serif;
  color: var(--text-color);
}

header {
  background-color: var(--main-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 60px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__logo img {
  width: 100px;
}

.header__nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}

.nav__links a {
  text-decoration: none;
  color: #ffffff;
}

.nav__active {
  color: var(--accent-color) !important;
  border-bottom: 2px solid var(--accent-color);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  cursor: pointer;
  padding: 5px;
  z-index: 100;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--bg-color);
}

.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero__swiper {
  width: 100%;
  height: 100%;
}

.swiper-slide {
  width: 100%;
  height: 100%;
}

.swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.swiper-button-prev,
.swiper-button-next {
  color: #ffffff !important;
  z-index: 10;
  width: 44px !important;
  height: 44px !important;
}

.swiper-button-prev::after,
.swiper-button-next::after {
  font-size: 24px !important;
  color: #ffffff;
}

.hero__content {
  position: absolute;
  bottom: 60px;
  left: 60px;
  z-index: 10;
  color: #ffffff;
}

.hero__catchphrase {
  font-size: 40px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  margin-bottom: 20px;
}

.hero__btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: #ffffff;
  text-decoration: none;
  padding: 15px 40px;
  border-radius: 30px;
  font-size: 18px;
}

.service {
  background-color: var(--sb-bg);
  padding: 80px 40px;
  text-align: center;
}

.section__header {
  display: flex;
  justify-content: center;
  gap: 15px;
  align-items: center;
  margin-bottom: 30px;
}

.section__slash {
  font-size: 20px;
  color: var(--accent-color);
  margin: 0 10px;
}

.section__en {
  font-size: 35px;
  color: var(--accent-color);
}

.section__ja {
  font-size: 40px;
  color: var(--main-color);
}

.service__list {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.service__item {
  text-align: left;
  display: flex;
  flex-direction: column;
  border: 1px solid #2d2d2d;
  border-radius: 10px;
  padding: 25px;
  width: 33%;
  margin: 0 auto 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.service__title {
  text-align: center;
  font-size: 25px;
  margin-top: 10px;
}

.service__text {
  text-align: center;
  font-size: 18px;
  margin-top: 10px;
}

.service__item:hover {
  transform: translateY(-5px);
  transition: transform 0.3s ease;
}

.service__img-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: 6px;
}

.service__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.achievements {
  background-color: var(--bg-color);
  padding: 80px 40px;
  text-align: center;
}

.tab__buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.tab__btn {
  padding: 10px 30px;
  border: 2px solid var(--main-color);
  background-color: transparent;
  color: var(--main-color);
  cursor: pointer;
  border-radius: 30px;
}

.tab__btn.active {
  background-color: var(--main-color);
  color: #ffffff;
}

.tab__content {
  display: none;
}

.tab__content.active {
  display: block;
}

.achievements__list {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  justify-content: center;
  margin-top: 40px;
}

.achievements__item {
  width: calc(33% - 20px);
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.achievements__item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.achievements__item h3 {
  font-size: 18px;
  padding: 15px 20px 10px;
  color: var(--main-color);
}

.achievements__item p {
  font-size: 14px;
  padding: 0 20px 20px;
  line-height: 1.8;
}

.faq__item {
  text-align: left;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--main-color);
  border-radius: 10px;
  padding: 30px;
  max-width: 800px;
  margin: 0 auto 20px;
}

.faq__question {
  font-size: 20px;
  color: var(--main-color);
  cursor: pointer;
}

.faq__answer {
  font-size: 15px;
  color: var(--accent-color);
  margin-top: 15px;
  line-height: 1.8;
  display: none;
}

.faq__answer.active {
  display: block;
}

.contact {
  background-color: var(--sb-bg);
  padding: 80px 40px;
  text-align: center;
}

.contact__text {
  font-size: 20px;
  margin-bottom: 20px;
}

.contact__form {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

.contact__label {
  display: block;
  font-size: 16px;
  margin-bottom: 8px;
  color: #1a3a5c;
}

.contact input,
.contact textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 24px;
  border: 1px solid var(--main-color);
  border-radius: 4px;
  background-color: #ffffff;
  font-family: "Noto Sans JP", serif;
  font-size: 16px;
}

.contact textarea {
  height: 150px;
  resize: vertical;
}

.contact button {
  display: block;
  width: 100%;
  padding: 15px;
  background-color: var(--main-color);
  color: #f8f9fa;
  border: none;
  border-radius: 30px;
  font-size: 18px;
  font-family: "Noto Sans JP", serif;
  cursor: pointer;
}

.error__message {
  color: #e74c3c;
  font-size: 14px;
  margin-top: 5px;
  display: none;
}

.required {
  font-size: 12px;
  margin-left: 8px;
  background-color: #e74c3c;
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 3px;
}

footer {
  padding: 60px 40px 20px;
  background-color: var(--main-color);
  color: #ffffff;
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.footer__logo img {
  width: 120px;
  margin-bottom: 20px;
}

.footer__address,
.footer__tel {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
}

.footer__nav ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.footer__nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}

.footer__nav a:hover {
  color: #ffffff;
}

.footer__copyright {
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding: 20px;
}

.animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate.visible {
  opacity: 1;
  transform: translateY(0);
}

.cta {
  background-color: var(--main-color);
  padding: 80px 40px;
  text-align: center;
}

.cta .section__en,
.cta .section__ja {
  color: #ffffff;
}

.cta__text {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 30px;
}

.cta__btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: #ffffff;
  text-decoration: none;
  padding: 15px 60px;
  border-radius: 30px;
  font-size: 18px;
}

.cta__btn:hover {
  opacity: 0.8;
  transition: opaity 0.3s ease;
}

@media (max-width: 768px) {
  header {
    padding: 15px 20px;
  }

  .header__nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--main-color);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 99;
  }

  .header__nav.active {
    display: flex;
  }

  .header__nav ul {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }

  .header__nav a {
    font-size: 20px;
  }

  .hamburger {
    display: flex;
  }

  .hero__catchphrase {
    font-size: 24px;
  }

  .hero__content {
    bottom: 40px;
    left: 20px;
  }

  .section__en {
    font-size: 17px;
  }

  .section__ja {
    font-size: 22px;
  }

  .service {
    padding: 60px 20px;
  }

  .service__list {
    flex-direction: column;
  }

  .service__item {
    width: 100%;
  }

  .achievements {
    padding: 60px 20px;
  }

  .achievements__item {
    width: 100%;
  }

  .tab__btn {
    font-size: 12px;
  }

  .faq {
    padding: 60px 20px;
  }

  .faq__question {
    font-size: 17px;
  }

  .contact {
    padding: 60px 20px;
  }

  .footer__content {
    flex-direction: column;
    gap: 30px;
  }
}