:root {
  --color-ink: #17202a;
  --color-muted: #5d6876;
  --color-line: #d9e1e8;
  --color-paper: #ffffff;
  --color-soft: #f4f7f9;
  --color-blue: #0f4c81;
  --color-deep-blue: #0f2f4f;
  --color-gold: #b8862f;
  --color-wine: #7d2535;
  --shadow-card: 0 24px 60px rgba(15, 47, 79, 0.12);
  --max-content-width: 1160px;
  color: var(--color-ink);
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", "Noto Sans JP", sans-serif;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
}

body,
button,
input,
textarea {
  font: inherit;
}

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

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

[data-site-header],
[data-site-footer] {
  display: block;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid transparent;
  background: transparent;
  color: #ffffff;
  transition:
    background 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    color 220ms ease,
    backdrop-filter 220ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(217, 225, 232, 0.75);
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-ink);
  backdrop-filter: blur(18px);
  animation: header-fade-in 240ms ease-out both;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.54);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  transition:
    background 220ms ease,
    border-color 220ms ease;
}

.site-header.is-scrolled .brand-mark {
  border-color: rgba(15, 47, 79, 0.22);
  background: linear-gradient(135deg, var(--color-deep-blue), var(--color-blue));
}

.brand-text {
  font-size: clamp(16px, 2vw, 20px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 32px);
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
  font-weight: 600;
  transition: color 220ms ease;
}

.site-header.is-scrolled .site-nav {
  color: var(--color-muted);
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #ffffff;
}

.site-nav a[aria-current="page"] {
  color: #ffffff;
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a:focus-visible,
.site-header.is-scrolled .site-nav a[aria-current="page"] {
  color: var(--color-blue);
}

@keyframes header-fade-in {
  from {
    opacity: 0.72;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero {
  position: relative;
  min-height: min(720px, 82svh);
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: clamp(80px, 10vw, 132px) clamp(20px, 5vw, 64px) clamp(56px, 8vw, 96px);
  isolation: isolate;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  z-index: -3;
}

.hero-overlay {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(8, 23, 38, 0.88) 0%, rgba(8, 23, 38, 0.7) 44%, rgba(8, 23, 38, 0.2) 100%),
    linear-gradient(180deg, rgba(15, 47, 79, 0.1), rgba(15, 47, 79, 0.52));
}

.hero-content {
  width: min(760px, 100%);
  color: #ffffff;
}

.page-hero {
  min-height: min(560px, 72svh);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 700;
}

.breadcrumb a {
  color: #ffffff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--color-gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(38px, 6vw, 72px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-gold);
  color: #ffffff;
}

.button-secondary {
  border-color: rgba(255, 255, 255, 0.55);
  color: #ffffff;
}

.section {
  padding: clamp(72px, 9vw, 112px) clamp(20px, 5vw, 64px);
}

.section-inner {
  width: min(var(--max-content-width), 100%);
  margin: 0 auto;
}

.intro-section {
  padding-top: clamp(36px, 5vw, 56px);
  padding-bottom: clamp(40px, 6vw, 72px);
  background: var(--color-soft);
}

.intro-grid,
.company-grid,
.contact-grid,
.strength-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.intro-grid h2,
.section-heading h2,
.strength-grid h2,
.company-grid h2,
.contact-copy h2 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: 0;
}

.intro-grid p,
.company-copy,
.contact-copy p {
  margin: 0;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.9;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 34px;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.business-card {
  min-height: 280px;
  padding: 30px;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 1px 0 rgba(15, 47, 79, 0.05);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.business-card:hover {
  transform: translateY(-3px);
  border-color: rgba(15, 76, 129, 0.28);
  box-shadow: var(--shadow-card);
}

.business-card-link {
  display: block;
  color: inherit;
}

.business-card-action {
  display: inline-flex;
  margin-top: 24px;
  color: var(--color-blue);
  font-size: 14px;
  font-weight: 800;
}

.business-number {
  display: block;
  margin-bottom: 42px;
  color: var(--color-wine);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 40px;
  line-height: 1;
}

.business-card h3,
.strength-item h3 {
  margin: 0 0 14px;
  font-size: 22px;
  line-height: 1.35;
}

.business-card p,
.strength-item p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.85;
}

.management-section .business-card,
.development-section .business-card,
.trade-section .business-card {
  min-height: 250px;
}

.strength-section {
  background:
    linear-gradient(135deg, rgba(15, 47, 79, 0.96), rgba(15, 76, 129, 0.92)),
    var(--color-deep-blue);
  color: #ffffff;
}

.strength-section .section-kicker,
.strength-section p {
  color: rgba(255, 255, 255, 0.76);
}

.strength-list {
  display: grid;
  gap: 18px;
}

.strength-item {
  padding: 0 0 22px 28px;
  border-left: 2px solid rgba(184, 134, 47, 0.72);
}

.strength-item h3 {
  color: #ffffff;
}

.company-section {
  background: var(--color-paper);
}

.consultation-section {
  background: var(--color-paper);
}

.consultation-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.consultation-grid h2 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: 0;
}

.consultation-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
  list-style: none;
}

.consultation-list li {
  display: grid;
  grid-template-columns: minmax(140px, 0.42fr) minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
}

.consultation-list strong {
  color: var(--color-ink);
  font-size: 18px;
}

.consultation-list span {
  color: var(--color-muted);
  line-height: 1.8;
}

.company-copy {
  margin-top: 20px;
}

.company-actions {
  margin-top: 28px;
}

.company-table {
  margin: 0;
  border-top: 1px solid var(--color-line);
}

.company-table div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-line);
}

.company-table dt {
  color: var(--color-muted);
  font-weight: 700;
}

.company-table dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.company-table a,
.direct-contact a {
  color: var(--color-blue);
  font-weight: 700;
}

.contact-section {
  background: var(--color-soft);
}

.contact-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.6fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}

.contact-cta-text h2 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.25;
  letter-spacing: 0;
}

.contact-cta-text p {
  margin: 18px 0 0;
  color: var(--color-muted);
  line-height: 1.9;
}

.contact-cta-panel {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid rgba(217, 225, 232, 0.88);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.contact-cta-panel .direct-contact {
  margin-top: 0;
}

.contact-cta-panel .button {
  width: 100%;
  margin-top: 26px;
}

.contact-copy {
  position: sticky;
  top: 104px;
}

.direct-contact {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.contact-form {
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(217, 225, 232, 0.88);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.form-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.form-row {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.form-row label {
  color: #263645;
  font-size: 14px;
  font-weight: 700;
}

.form-row label span {
  margin-left: 8px;
  color: var(--color-wine);
  font-size: 12px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  border: 1px solid #cbd5df;
  border-radius: 4px;
  background: #ffffff;
  color: var(--color-ink);
  padding: 13px 14px;
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.form-row textarea {
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.14);
}

.form-row input[aria-invalid="true"],
.form-row textarea[aria-invalid="true"] {
  border-color: var(--color-wine);
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.form-status {
  min-height: 24px;
  margin: 2px 0 18px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.6;
}

.form-status.is-error {
  color: var(--color-wine);
}

.form-status.is-success {
  color: #176445;
}

.submit-button {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--color-deep-blue), var(--color-blue));
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
  transition:
    opacity 160ms ease,
    transform 160ms ease;
}

.submit-button:hover,
.submit-button:focus-visible {
  transform: translateY(-1px);
}

.submit-button:disabled {
  cursor: not-allowed;
  opacity: 0.66;
  transform: none;
}

.privacy-section {
  padding-top: 36px;
  padding-bottom: 36px;
  background: #ffffff;
}

.privacy-details {
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding: 18px 0;
}

.privacy-details summary {
  cursor: pointer;
  font-weight: 800;
}

.privacy-details p {
  margin: 16px 0 0;
  color: var(--color-muted);
  line-height: 1.85;
}

.site-footer {
  padding: 28px clamp(20px, 5vw, 64px);
  background: #0a1926;
  color: rgba(255, 255, 255, 0.78);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  width: min(var(--max-content-width), 100%);
  margin: 0 auto;
  font-size: 14px;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .intro-grid,
  .company-grid,
  .contact-grid,
  .contact-cta-grid,
  .strength-grid,
  .consultation-grid {
    grid-template-columns: 1fr;
  }

  .business-grid {
    grid-template-columns: 1fr;
  }

  .contact-copy {
    position: static;
  }
}

@media (max-width: 620px) {
  .hero {
    min-height: 76svh;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .form-columns,
  .company-table div,
  .consultation-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-inner {
    flex-direction: column;
  }
}