:root {
  --color-primary: #1e4ea1;
  --color-red: #e83618;
  --color-bg: #f6f9ff;
  --color-text: #000000;
  --color-border: #d1d5dc;
  --font-base: "Noto Sans JP", sans-serif;
  --font-number: "Inter", "Noto Sans JP", sans-serif;
}

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

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Animation */
.js-fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.js-fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-red {
  color: var(--color-red);
}

.text-#fff {
  color: #fff;
}

/* Header */
.header {
  background-color: #fff;
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1);
  height: 92px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo img {
  height: 40px; /* Adjust based on actual logo */
}

.header__actions {
  display: flex;
  gap: 10px;
}

.header__phone,
.header__contact {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-primary);
  color: #fff;
  padding: 0 24px;
  height: 48px;
  border-radius: 24px;
  font-weight: bold;
  transition: opacity 0.3s;
}

.header__phone:hover,
.header__contact:hover {
  opacity: 0.9;
}

.header__phone img,
.header__contact img {
  width: 20px;
  height: 20px;
}

/* Hero */
.hero {
  position: relative;
  height: 560px;
  overflow: hidden;
  background-image: url(../images/hero_img.jpg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__container {
  position: absolute;
  max-width: 1240px;
  padding: 0 20px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  box-sizing: border-box;
}

.hero__content {
  margin-left: 20px; /* Adjust alignment */
}

.hero__subtitle {
  font-size: clamp(1.75rem, 1.04rem + 3.03vw, 3.3125rem);
  color: var(--color-red);
  font-weight: bold;
  line-height: 1;
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(1.375rem, 0.41rem + 4.12vw, 3.5rem);
  color: var(--color-primary);
  font-weight: bold;
  line-height: 1.4;
}

/* Problems */
.problems {
  background-color: #fff;
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.625rem, 1rem + 2.67vw, 3rem);
  color: var(--color-primary);
  text-align: center;
  font-weight: bold;
  margin-bottom: 40px;
}

.section-subtitle {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
  text-align: center;
  margin-bottom: 64px;
}

.problems__content {
  display: grid;
  grid-template-columns: 4fr 3fr;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 60px;
}

.problems__list {
  display: flex;
  flex-direction: column;
  gap: 30px;
  justify-content: center;
}

.problems__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: clamp(1rem, 0.77rem + 0.97vw, 1.5rem);
  font-weight: bold;
}

.problems__icon {
  width: 24px;
  height: 24px;
  margin-top: 8px;
}

.problems__image-wrapper {
  position: relative;
  width: 495px;
  height: 351px;
}

.problems__woman,
.problems__man,
.problems__moyamoya {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.problems__solution {
  font-size: clamp(1.5rem, 0.99rem + 2.18vw, 2.625rem);
  margin-bottom: 50px;
  text-align: center;
  font-weight: bold;
  color: var(--color-primary);
}

/* Feature */
.feature {
  background-color: #fff;
}
.feature__content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
}
.feature__lead {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
  text-align: center;
  margin-bottom: 50px;
}
.feature__list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.feature__item__title {
  font-size: clamp(1.5rem, 1.318rem + 0.91vw, 2rem);
  color: var(--color-primary);
  margin-bottom: 10px;
}

.feature__image {
  flex: 1;
}
.feature__image img {
  width: 100%;
  border-radius: 20px;
}
/* Strengths */
.strengths {
  padding: 120px 0;
}

.strengths__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.strength-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.1);
}

.strength-card__content {
  padding: 32px;
}

.strength-card__title {
  font-size: clamp(1.25rem, 1.14rem + 0.48vw, 1.5rem);
  color: var(--color-primary);
  margin-bottom: 16px;
}

.strength-card__text {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
}

/* Services */
.services {
  background-color: #fff;
  padding: 120px 0;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 60px;
}

.service-card {
  border-radius: 30px;
  padding: 34px;
  border: 5px solid;
  height: 100%;
}

.service-card--home {
  border-color: var(--color-red);
}

.service-card--facility {
  border-color: var(--color-primary);
}

.service-card__title {
  font-size: clamp(1.75rem, 1.64rem + 0.48vw, 2rem);
  text-align: center;
  margin-bottom: 24px;
}

.service-card--home .service-card__title {
  color: var(--color-red);
}

.service-card--facility .service-card__title {
  color: var(--color-primary);
}

.service-card__title-small {
  display: block;
  font-size: 1.125rem;
  color: var(--color-text);
  font-weight: normal;
  margin-top: 5px;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 12px;
  font-weight: bold;
  font-size: 1rem;
  gap: 20px;
}

.service-item:last-child {
  border-bottom: none;
}

.service-item__price {
  font-size: 1.125rem;
}

.service-card--home .service-item__price {
  color: var(--color-red);
}

.service-card--facility .service-item__price {
  color: var(--color-primary);
}

.service-card__note {
  margin-top: 26px;
  text-align: center;
  color: var(--color-red);
  font-weight: bold;
  border-top: 2px solid var(--color-red);
  padding-top: 26px;
}

.service-card__note-small {
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
}

.service-card__note-large {
  font-size: clamp(1.125rem, 1.07rem + 0.24vw, 1.25rem);
}

.service-card__footer {
  margin-top: 18px;
  border-top: 2px solid var(--color-primary);
  padding-top: 18px;
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1.125rem);
}

.services__tax-note {
  text-align: right;
  margin-top: 20px;
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
}

/* Flow */
.flow {
  background-color: var(--color-primary);
  padding: 120px 0;
  color: #fff;
}

.flow .section-title {
  color: #fff;
}

.flow__steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 768px;
  margin: 60px auto 0;
  position: relative;
}

.flow-step {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  color: var(--color-text);
  position: relative;
  z-index: 1;
}

/* Connecting line */
.flow__steps::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 72px; /* Adjust based on icon center */
  width: 2px;
  background-color: rgba(255, 255, 255, 0.3);
  z-index: 0;
}

.flow-step__icon {
  width: 80px;
  height: 80px;
  background-color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.flow-step__icon img {
  width: 40px;
  height: 40px;
}

.flow-step__content {
  flex: 1;
}

.flow-step__title {
  font-size: clamp(1.25rem, 1.14rem + 0.48vw, 1.5rem);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.flow-step__text {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
}

/* FAQ */
.faq {
  background-color: #fff;
  padding: 120px 0;
}

.faq__list {
  max-width: 768px;
  margin: 60px auto 0;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.faq-item {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.faq-item__question {
  padding: 20px 24px;
  font-size: clamp(1rem, 0.94rem + 0.24vw, 1.125rem);
  font-weight: bold;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}

.faq-item__question::-webkit-details-marker {
  display: none;
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  transition: transform 0.3s;
}

.faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding: 0 24px 24px;
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
}

/* About */
.about {
  padding: 120px 0;
}

.about__content {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  padding: 40px;
  max-width: 896px;
  margin: 60px auto 0;
}

.about__header {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-bottom: 32px;
}

.about__image {
  width: 192px;
  height: 192px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

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

.about__role {
  font-size: clamp(1rem, 0.94rem + 0.24vw, 1.125rem);
  color: var(--color-primary);
  margin-bottom: 8px;
}

.about__name {
  font-size: clamp(1.125rem, 1.07rem + 0.24vw, 1.25rem);
}

.about__text p {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
  margin-bottom: 16px;
}

/* Area */
.area {
  background-color: #fff;
  padding: 120px 0;
}

.area__content {
  background: #fff;
  border: 5px solid var(--color-primary);
  border-radius: 20px;
  padding: 40px;
  max-width: 896px;
  margin: 60px auto 0;
}

.area__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.area-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  font-size: 1.125rem;
}

.area-item img {
  width: 24px;
  height: 24px;
}

.area__note {
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
  text-align: center;
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
}

/* Contact */
.contact {
  padding: 120px 0;
}

.contact__grid {
  display: flex;
  flex-direction: column;
  gap: 100px;
  max-width: 896px;
  margin: 60px auto 0;
}

.contact-card {
  background: #fff;
  border: 5px solid var(--color-primary);
  border-radius: 24px;
  padding: 50px 42px;
  text-align: center;
}

.contact-card--phone,
.contact-card--form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.contact-card__icon {
  width: 80px;
  height: 80px;
  background-color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card__icon img {
  width: 40px;
  height: 40px;
}

.contact-card__title {
  font-size: clamp(1.25rem, 1.02rem + 0.97vw, 1.75rem);
  color: var(--color-primary);
}

.contact-card__number {
  font-size: clamp(2.25rem, 2.02rem + 0.97vw, 2.75rem);
  color: var(--color-red);
  font-weight: bold;
}

.contact-card__text {
  font-size: clamp(1rem, 0.89rem + 0.48vw, 1.25rem);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.form-group label {
  font-size: 1.125rem;
}

.required {
  color: var(--color-red);
}

.form-group input,
.form-group textarea {
  border: 2px solid var(--color-border);
  border-radius: 10px;
  padding: 12px;
  font-size: 1rem;
  font-family: inherit;
}

.form-group textarea {
  height: 124px;
  resize: vertical;
}

.submit-btn {
  background-color: var(--color-red);
  color: #fff;
  border: none;
  border-radius: 50px;
  height: 80px;
  font-size: clamp(1.25rem, 1.17rem + 0.36vw, 1.4375rem);
  cursor: pointer;
  width: 400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0px 10px 15px rgba(0, 0, 0, 0.1);
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: #fff;
  padding: 48px 0 0;
}

.footer__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer__logo img {
  height: 40px;
  margin-bottom: 16px;
}

.footer__address {
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
}

.footer__phone {
  font-size: 1.5rem;
  font-weight: bold;
}

.footer__area {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.footer__area img {
  margin-top: 4px;
}

.footer__copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  text-align: center;
  padding: 24px 0;
  font-size: clamp(0.875rem, 0.82rem + 0.24vw, 1rem);
}

/* Responsive Design (SP) */
@media (max-width: 768px) {
  .header {
    height: auto;
    padding: 10px 0;
  }

  .header__container {
    padding: 0 10px;
  }

  .header__logo img {
    height: 30px;
  }

  .header__actions {
    gap: 10px;
  }

  .header__phone,
  .header__contact {
    padding: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    justify-content: center;
  }

  .header__phone span,
  .header__contact span {
    display: none;
  }

  /* Hero SP */
  .hero {
    height: 0;
    padding-top: 48.7vh; /* Maintain aspect ratio */
    background-image: url(../images/hero_img_sp.jpg);
  }

  .hero__container {
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding-top: 50px;
    transform: none;
    align-items: flex-start;
  }

  .hero__content {
    margin-left: 0;
    padding: 0;
  }

  .hero__subtitle {
    margin-bottom: 10px;
  }

  /* Problems SP */
  .problems {
    padding: 50px 0;
  }

  .section-title {
    margin-bottom: 20px;
  }

  .section-subtitle {
    margin-bottom: 40px;
  }

  .problems__content {
    grid-template-columns: 1fr;
    align-items: center;
    margin-bottom: 30px;
  }

  .problems__list {
    gap: 20px;
  }

  .problems__image-wrapper {
    width: 100%;
    max-width: 360px;
    height: 256px;
  }
  /* feature */
  .feature__content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .feature__image {
    order: -1; /* デフォルト(0)より小さくして先頭に移動 */
  }
  /* Strengths SP */
  .strengths {
    padding: 50px 0;
  }

  .strengths__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  /* Services SP */
  .services {
    padding: 50px 0;
  }

  .services__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .service-card {
    padding: 20px;
    border-width: 3px;
    border-radius: 10px;
  }

  /* Flow SP */
  .flow {
    padding: 50px 0;
  }

  .flow__steps {
    margin-top: 32px;
  }

  .flow__steps::before {
    left: 45px; /* Adjust for smaller icon: 20px padding + 25px half-width */
  }

  .flow-step {
    padding: 20px;
    gap: 16px;
  }

  .flow-step__icon {
    width: 50px;
    height: 50px;
  }

  .flow-step__icon img {
    width: 25px;
    height: 25px;
  }

  /* FAQ SP */
  .faq {
    padding: 50px 0;
  }

  .faq__list {
    margin-top: 40px;
  }

  .faq-item__question {
    padding: 10px 24px;
  }

  /* About SP */
  .about {
    padding: 50px 0;
  }

  .about__content {
    padding: 20px 30px;
  }

  .about__header {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  /* Area SP */
  .area {
    padding: 50px 0;
  }

  .area__content {
    padding: 30px 20px;
    border-width: 3px;
  }

  .area__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Contact SP */
  .contact {
    padding: 50px 0;
  }

  .contact__grid {
    gap: 50px;
  }

  .contact-card {
    padding: 30px 20px;
    border-width: 3px;
  }

  .contact-card__icon {
    width: 50px;
    height: 50px;
  }

  .contact-card__icon img {
    width: 30px;
    height: 30px;
  }

  .submit-btn {
    width: 100%;
    height: 60px;
  }

  /* Footer SP */
  .footer__container {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer__info {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

/* アニメーション用の追加スタイル */
.faq-item__answer {
  overflow: hidden;
}
/* 矢印の回転アニメーション */
.faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
}
.faq-item__icon {
  transition: transform 0.3s ease;
}