:root {
  --color-ink: #121615;
  --color-muted: #5d6764;
  --color-soft: #f5f2ec;
  --color-surface: #ffffff;
  --color-line: #ddd6c9;
  --color-accent: #0f746b;
  --color-accent-dark: #0a4c47;
  --color-brass: #b68a4a;
  --shadow-soft: 0 18px 45px rgba(18, 22, 21, 0.12);
  --radius-sm: 6px;
  --radius-md: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--color-ink);
  background: var(--color-soft);
  font-family:
    Inter,
    "Noto Sans JP",
    "Hiragino Sans",
    "Yu Gothic",
    sans-serif;
}

a {
  color: var(--color-accent);
}

a:hover {
  color: var(--color-accent-dark);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(245, 242, 236, 0.94);
  border-bottom: 1px solid rgba(18, 22, 21, 0.08);
  backdrop-filter: blur(14px);
}

.navbar {
  min-height: 72px;
  padding: 0;
}

.navbar-brand {
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
}

.navbar-brand:hover {
  color: var(--color-ink);
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #fff;
  background: var(--color-ink);
  border-radius: 50%;
  font-weight: 700;
}

.brand-name {
  white-space: nowrap;
}

.navbar-nav {
  gap: 0.35rem;
}

.nav-link {
  color: var(--color-muted);
  font-size: 0.93rem;
  font-weight: 600;
  letter-spacing: 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-ink);
}

.nav-link-contact {
  padding-right: 1rem !important;
  padding-left: 1rem !important;
  color: #fff;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
}

.nav-link-contact:hover,
.nav-link-contact.active {
  color: #fff;
  background: var(--color-accent-dark);
}

.message-container {
  margin-top: 1rem;
}

.hero-section {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: #171b1b;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(18, 22, 21, 0.9), rgba(18, 22, 21, 0.58) 42%, rgba(18, 22, 21, 0.14)),
    linear-gradient(0deg, rgba(18, 22, 21, 0.58), rgba(18, 22, 21, 0.04) 44%);
}

.hero-content {
  position: relative;
  max-width: 720px;
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.hero-content h1,
.page-hero h1 {
  margin: 0;
  font-size: 4rem;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 600px;
  margin: 1.6rem 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.22rem;
  line-height: 1.9;
}

.hero-actions,
.callout-band,
.contact-panel {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.hero-actions {
  margin-top: 2rem;
}

.btn {
  min-height: 46px;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0;
}

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.7);
}

.section {
  padding: 88px 0;
}

.section-muted {
  background: #ebe7dc;
}

.split-layout,
.callout-band,
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 4rem;
  align-items: start;
}

.section-label {
  margin: 0 0 0.85rem;
  color: var(--color-brass);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section h2,
.compact-hero h1,
.contact-panel h2 {
  margin: 0;
  font-size: 2.35rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0;
}

.large-copy,
.page-hero p,
.contact-panel p,
.service-detail p {
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 2;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 2rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-line);
  box-shadow: var(--shadow-soft);
}

.service-item {
  min-height: 285px;
  padding: 2rem;
  background: var(--color-surface);
}

.service-number,
.detail-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-weight: 800;
}

.service-number {
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
}

.service-item h3,
.service-detail h2 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: 0;
}

.service-item p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.85;
}

.callout-band,
.contact-panel {
  align-items: center;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.page-hero {
  padding: 112px 0 72px;
  background: #ede8dc;
  border-bottom: 1px solid var(--color-line);
}

.page-hero p {
  max-width: 760px;
  margin: 1.25rem 0 0;
}

.service-detail-list {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-line);
}

.service-detail {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 2rem;
  background: var(--color-surface);
}

.detail-index {
  width: 52px;
  height: 52px;
  border: 1px solid var(--color-line);
  border-radius: 50%;
}

.company-panel {
  max-width: 880px;
  padding: 0;
}

.company-list {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.company-list div {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.35rem 1.5rem;
  border-bottom: 1px solid var(--color-line);
}

.company-list div:last-child {
  border-bottom: 0;
}

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

.company-list dd {
  margin: 0;
  color: var(--color-ink);
  font-weight: 700;
}

.site-footer {
  padding: 48px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--color-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  align-items: start;
}

.footer-brand {
  display: inline-block;
  margin-bottom: 0.5rem;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.footer-brand:hover {
  color: #fff;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
}

.footer-links a:hover {
  color: #fff;
}

@media (max-width: 991.98px) {
  .hero-section {
    min-height: 620px;
  }

  .hero-content h1,
  .page-hero h1 {
    font-size: 3rem;
  }

  .section h2,
  .contact-panel h2 {
    font-size: 2rem;
  }

  .split-layout,
  .callout-band,
  .contact-panel {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767.98px) {
  .navbar {
    min-height: 64px;
  }

  .navbar-collapse {
    padding: 0.8rem 0 1rem;
  }

  .nav-link-contact {
    display: inline-block;
    margin-top: 0.35rem;
  }

  .hero-section {
    min-height: 590px;
  }

  .hero-overlay {
    background: rgba(18, 22, 21, 0.7);
  }

  .hero-content {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .hero-content h1,
  .page-hero h1 {
    font-size: 2.45rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .section,
  .page-hero {
    padding: 64px 0;
  }

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

  .service-item {
    min-height: auto;
  }

  .service-detail {
    grid-template-columns: 1fr;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }

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

  .footer-links {
    justify-content: flex-start;
  }
}

.alert-debug {
  color: black;
  background-color: white;
  border-color: #d6e9c6;
}

.alert-error {
  color: #b94a48;
  background-color: #f2dede;
  border-color: #eed3d7;
}