:root {
  color-scheme: dark;
  --navy: #071b3a;
  --pale-blue: #dceef8;
  --white: #f7fbff;
  --muted: #adc9df;
  --line: rgba(205, 231, 248, 0.22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 72% 30%, rgba(76, 169, 222, 0.2), transparent 32rem),
    linear-gradient(145deg, #bcdff1 0%, #438fc6 27%, #123f78 58%, var(--navy) 100%);
  background-attachment: fixed;
  color: var(--white);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
}

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

.page-shell {
  width: min(100%, 90rem);
  min-height: 100vh;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 5vw, 5rem);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 7rem;
  border-bottom: 1px solid var(--line);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: Arial, sans-serif;
  font-size: 0.96rem;
  font-weight: 400;
  letter-spacing: 0.22em;
}

.logo-mark {
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  background: #fff;
  object-fit: cover;
}

.header-menu {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.75rem);
  font-size: 0.96rem;
  letter-spacing: 0.12em;
}

.header-menu a,
.header-menu .menu-placeholder {
  position: relative;
  padding: 0.5rem 0;
  white-space: nowrap;
}

.header-menu a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--pale-blue);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms ease;
}

.header-menu a:hover::after,
.header-menu a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.menu-placeholder {
  color: var(--muted);
  cursor: default;
}

.mobile-menu {
  position: relative;
  display: none;
}

.mobile-menu summary {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.72rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
  list-style: none;
  place-content: center stretch;
  gap: 0.25rem;
}

.mobile-menu summary::-webkit-details-marker { display: none; }

.mobile-menu summary span {
  display: block;
  width: 1.15rem;
  height: 1px;
  background: var(--white);
  transition: transform 220ms ease, opacity 220ms ease;
}

.mobile-menu[open] summary span:first-child { transform: translateY(0.31rem) rotate(45deg); }
.mobile-menu[open] summary span:nth-child(2) { opacity: 0; }
.mobile-menu[open] summary span:last-child { transform: translateY(-0.31rem) rotate(-45deg); }

.mobile-menu-panel {
  position: absolute;
  z-index: 10;
  top: calc(100% + 0.9rem);
  right: 0;
  display: flex;
  width: min(17rem, calc(100vw - 3rem));
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--line);
  background: rgba(7, 27, 58, 0.96);
  box-shadow: 0 1.25rem 3rem rgba(0, 17, 45, 0.3);
  flex-direction: column;
  backdrop-filter: blur(0.75rem);
}

.mobile-menu-panel a,
.mobile-menu-panel .menu-placeholder {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
  letter-spacing: 0.12em;
}

.mobile-menu-panel > :last-child { border-bottom: 0; }

.mobile-menu-panel a:focus-visible {
  outline: 1px solid var(--pale-blue);
  outline-offset: 0.2rem;
}

.hero {
  position: relative;
  display: flex;
  min-height: 35rem;
  padding: clamp(5.5rem, 12vw, 10rem) 0 clamp(6rem, 12vw, 10rem);
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  text-align: center;
}

.hero-glow {
  position: absolute;
  top: 40%;
  left: 50%;
  width: min(70vw, 45rem);
  height: min(70vw, 45rem);
  border: 1px solid rgba(227, 246, 255, 0.12);
  border-radius: 50%;
  box-shadow: 0 0 8rem rgba(116, 199, 239, 0.18);
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.hero-label {
  position: relative;
  margin: 0 0 2.5rem;
  color: var(--pale-blue);
  font-family: Arial, sans-serif;
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.38em;
  text-transform: uppercase;
}

h1 {
  position: relative;
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2.6rem, 6.6vw, 6.2rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  line-height: 1.45;
  text-shadow: 0 0.25rem 2.5rem rgba(0, 26, 63, 0.26);
}

.hero-copy {
  position: relative;
  margin: 2.5rem 0 0;
  color: var(--muted);
  font-size: clamp(0.82rem, 1.4vw, 0.96rem);
  letter-spacing: 0.16em;
  line-height: 2;
}

.scroll-line {
  position: relative;
  width: 1px;
  height: 3.5rem;
  margin-top: 3rem;
  background: linear-gradient(to bottom, var(--pale-blue), transparent);
}

.about {
  display: grid;
  padding: clamp(5rem, 10vw, 8rem) clamp(0rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
  grid-template-columns: minmax(12rem, 0.7fr) minmax(18rem, 1.3fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.about-label {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.about h2 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 400;
  letter-spacing: 0.12em;
}

.about-copy {
  max-width: 46rem;
  color: var(--pale-blue);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  letter-spacing: 0.08em;
  line-height: 2.15;
}

.about-copy p {
  margin: 0 0 1.65rem;
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.about-copy .about-lead {
  margin-bottom: 2.25rem;
  color: var(--white);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.95;
}

#business {
  padding-bottom: clamp(3rem, 5vw, 4.5rem);
}

.consultation-promo {
  display: grid;
  padding: 0 clamp(0rem, 4vw, 4rem) clamp(5rem, 10vw, 8rem);
  grid-template-columns: minmax(12rem, 0.7fr) minmax(18rem, 1.3fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.consultation-promo-card {
  position: relative;
  width: 100%;
  max-width: 46rem;
  padding: clamp(2.25rem, 5vw, 4rem);
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: linear-gradient(145deg, rgba(184, 226, 247, 0.16), rgba(9, 53, 104, 0.13));
  grid-column: 2;
  overflow: hidden;
}

.consultation-promo-card::after {
  position: absolute;
  top: -4.5rem;
  right: -4.5rem;
  width: 11rem;
  height: 11rem;
  border: 1px solid rgba(205, 231, 248, 0.14);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.consultation-promo-label {
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.consultation-promo-card h2 {
  position: relative;
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 1.7;
}

@media (min-width: 60rem) {
  .consultation-promo-line {
    white-space: nowrap;
  }
}

.consultation-promo-copy {
  max-width: 38rem;
  margin: 1.75rem 0 0;
  color: var(--pale-blue);
  font-size: clamp(0.88rem, 1.3vw, 1rem);
  letter-spacing: 0.06em;
  line-height: 2;
}

.consultation-promo-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 21.5rem);
  margin-top: 2.25rem;
  padding: 1.25rem 1.75rem;
  border-radius: 999px;
  background: var(--pale-blue);
  color: var(--navy);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  gap: 1.5rem;
  transition: background-color 180ms ease, transform 180ms ease;
}

.consultation-promo-link:hover,
.consultation-promo-link:focus-visible {
  outline: none;
  background: var(--white);
  transform: translateY(-0.15rem);
}

@media (min-width: 44.0625rem) {
  .consultation-promo-card {
    padding-bottom: calc(clamp(2.25rem, 5vw, 4rem) + 0.75rem);
  }

  .consultation-promo-link {
    transform: translateY(0.75rem);
  }

  .consultation-promo-link:hover,
  .consultation-promo-link:focus-visible {
    transform: translateY(0.6rem);
  }
}

.company-list {
  width: 100%;
  max-width: 46rem;
  margin: 0;
  border-top: 1px solid var(--line);
}

.company-row {
  display: grid;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: minmax(7rem, 0.36fr) minmax(0, 1fr);
  gap: 1.5rem;
}

.company-row dt {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

.company-row dd {
  margin: 0;
  color: var(--pale-blue);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  letter-spacing: 0.07em;
  line-height: 2;
}

.company-contact-link {
  border-bottom: 1px solid rgba(220, 238, 248, 0.45);
  transition: border-color 180ms ease;
}

.company-contact-link:hover,
.company-contact-link:focus-visible {
  border-color: var(--pale-blue);
  outline: none;
}

.contact-form {
  position: relative;
  display: grid;
  width: 100%;
  max-width: 46rem;
  gap: 1.75rem;
}

.form-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.form-field {
  display: grid;
  gap: 0.7rem;
}

.form-field label {
  color: var(--pale-blue);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

.required,
.optional {
  margin-left: 0.5rem;
  color: var(--muted);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  outline: none;
  background: rgba(220, 238, 248, 0.08);
  color: var(--white);
  font: inherit;
  font-size: 1rem;
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.form-field input {
  min-height: 3.25rem;
  padding: 0.8rem 1rem;
}

.form-field textarea {
  min-height: 10rem;
  padding: 1rem;
  line-height: 1.8;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: rgba(220, 238, 248, 0.72);
  background: rgba(220, 238, 248, 0.12);
  box-shadow: 0 0 0 3px rgba(116, 199, 239, 0.12);
}

.submit-button {
  width: fit-content;
  min-width: 11rem;
  min-height: 3.5rem;
  padding: 0.9rem 2rem;
  border: 1px solid rgba(220, 238, 248, 0.5);
  border-radius: 2rem;
  background: var(--pale-blue);
  color: var(--navy);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.submit-button:hover,
.submit-button:focus-visible {
  outline: none;
  background: var(--white);
  transform: translateY(-0.15rem);
}

.submit-button:disabled {
  cursor: wait;
  opacity: 0.65;
  transform: none;
}

.form-status {
  min-height: 1.7em;
  margin: -0.5rem 0 0;
  color: var(--pale-blue);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
}

.form-status[data-state="error"] {
  color: #ffd4d4;
}

.section-links {
  display: grid;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.section-card {
  position: relative;
  display: flex;
  min-height: 14rem;
  padding: 2.25rem;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  transition: transform 240ms ease;
}

.section-card + .section-card { border-left: 1px solid var(--line); }

.section-card::before {
  position: absolute;
  inset: 100% 0 0;
  background: linear-gradient(145deg, rgba(184, 226, 247, 0.18), rgba(9, 53, 104, 0.08));
  content: "";
  transition: inset 280ms ease;
}

.section-card:hover::before,
.section-card:focus-visible::before { inset: 0; }

.section-card:hover,
.section-card:focus-visible {
  outline: none;
  transform: translateY(-0.25rem);
}

.card-number, .card-title, .card-en, .arrow { position: relative; }

.card-number {
  margin-bottom: 2rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
}

.card-title {
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  letter-spacing: 0.12em;
}

.card-en {
  margin-top: 0.5rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.arrow {
  position: absolute;
  right: 2.25rem;
  bottom: 2.25rem;
  font-size: 1.2rem;
  transition: transform 220ms ease;
}

.section-card:hover .arrow,
.section-card:focus-visible .arrow { transform: translateX(0.4rem); }

footer {
  padding: 2.5rem 0 3rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-align: right;
}

.footer-privacy {
  margin-right: 1.5rem;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease;
}

.footer-privacy:hover,
.footer-privacy:focus-visible {
  border-color: currentColor;
  outline: none;
}

.privacy-header-link {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.privacy-header-link:hover,
.privacy-header-link:focus-visible {
  color: var(--white);
  outline: none;
}

.privacy-main {
  width: min(100%, 48rem);
  margin: 0 auto;
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 clamp(5rem, 10vw, 8rem);
}

.privacy-title {
  margin: 0 0 clamp(3rem, 7vw, 5rem);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  letter-spacing: 0.1em;
  line-height: 1.5;
}

.privacy-content {
  color: var(--pale-blue);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  letter-spacing: 0.06em;
  line-height: 2;
}

.privacy-content h2 {
  margin: 3rem 0 1rem;
  color: var(--white);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  font-weight: 400;
  letter-spacing: 0.1em;
}

.privacy-content p {
  margin: 0 0 1.5rem;
}

.privacy-content ul {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
}

.privacy-content li + li {
  margin-top: 0.35rem;
}

.privacy-signature {
  margin-top: 3.5rem;
}

.privacy-signature p {
  margin-bottom: 0.35rem;
}

.news-main {
  width: min(100%, 48rem);
  margin: 0 auto;
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 clamp(5rem, 10vw, 8rem);
}

.news-heading {
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.news-heading-en {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.news-title {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  letter-spacing: 0.1em;
  line-height: 1.5;
}

.news-list {
  border-top: 1px solid var(--line);
}

.news-entry {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  border-bottom: 1px solid var(--line);
}

.news-date {
  margin: 0 0 1rem;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.news-entry h2 {
  margin: 0 0 2rem;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

.news-body {
  color: var(--pale-blue);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  letter-spacing: 0.06em;
  line-height: 2;
}

.news-body p {
  margin: 0 0 1.5rem;
}

.news-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 44rem) {
  html {
    background: var(--navy);
  }
  body {
    position: relative;
    isolation: isolate;
    background: var(--navy);
  }
  body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background:
      radial-gradient(
        ellipse 78% 50% at 0% 0%,
        rgba(172, 216, 237, 0.43) 0%,
        rgba(76, 169, 222, 0.17) 44%,
        transparent 75%
      ),
      linear-gradient(145deg, #397eaf 0%, #245f98 32%, #123f78 62%, var(--navy) 100%);
    content: "";
    pointer-events: none;
  }
  .site-header { min-height: 5.5rem; }
  .logo { font-size: 1rem; }
  .privacy-main { padding: 3.75rem 0 5rem; }
  .privacy-title { margin-bottom: 2.75rem; font-size: 1.85rem; }
  .privacy-content { letter-spacing: 0.04em; line-height: 1.95; }
  .privacy-content h2 { margin-top: 2.5rem; }
  .news-main { padding: 3.75rem 0 5rem; }
  .news-heading { margin-bottom: 2.75rem; }
  .news-title { font-size: 1.85rem; }
  .news-body { letter-spacing: 0.04em; line-height: 1.95; }
  .desktop-menu, .desktop-break { display: none; }
  .mobile-menu { display: block; }
  .hero { min-height: 33rem; padding-top: 6.5rem; }
  h1 { letter-spacing: 0.06em; }
  .about {
    padding: 4.5rem 0;
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-copy { letter-spacing: 0.05em; line-height: 2; }
  #business {
    padding-bottom: 2.75rem;
  }
  .consultation-promo {
    padding: 0 0 4.5rem;
    grid-template-columns: 1fr;
    gap: 0;
  }
  .consultation-promo-card {
    padding: 2rem 1.5rem;
    grid-column: 1;
  }
  .consultation-promo-card h2 {
    font-size: clamp(1.35rem, 6.4vw, 1.75rem);
    letter-spacing: 0.05em;
  }
  .consultation-promo-break {
    display: none;
  }
  .consultation-promo-copy {
    letter-spacing: 0.04em;
  }
  .consultation-promo-link {
    padding: 1.15rem 1.35rem;
    font-size: 0.82rem;
    gap: 0.75rem;
  }
  .company-row {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }
  .contact-form { gap: 1.5rem; }
  .submit-button { width: 100%; }
  .section-links { grid-template-columns: 1fr; }
  .section-card { min-height: 10rem; padding: 1.75rem; }
  .section-card + .section-card { border-top: 1px solid var(--line); border-left: 0; }
  .card-number { margin-bottom: 1rem; }
  .arrow { right: 1.75rem; bottom: 50%; transform: translateY(50%); }
  .section-card:hover .arrow,
  .section-card:focus-visible .arrow { transform: translate(0.4rem, 50%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before { transition: none !important; }
}