:root {
  --ink: #10212a;
  --muted: #5c6a70;
  --paper: #f7f3ea;
  --surface: #ffffff;
  --line: rgba(16, 33, 42, 0.13);
  --teal: #1d8a84;
  --teal-dark: #086965;
  --coral: #db5f4a;
  --gold: #d8ac46;
  --shadow: 0 24px 70px rgba(16, 33, 42, 0.13);
  --radius: 8px;
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.skip-link,
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  z-index: 100;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  margin: 0;
  clip: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  background: rgba(248, 245, 239, 0.82);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(248, 245, 239, 0.96);
  border-color: var(--line);
  box-shadow: 0 8px 22px rgba(16, 33, 42, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100% - 2rem));
  min-height: 76px;
  margin: 0 auto;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  font-weight: 700;
}

.brand img {
  flex: 0 0 auto;
}

.brand span {
  display: grid;
  gap: 0.02rem;
}

.brand strong {
  line-height: 1.1;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.nav-menu a {
  min-height: 42px;
  padding: 0.62rem 0.85rem;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  transition:
    background 160ms ease,
    color 160ms ease;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background: rgba(29, 127, 120, 0.09);
  color: var(--ink);
  outline: none;
}

.nav-menu .nav-cta {
  background: var(--ink);
  color: #fff;
}

.nav-menu .nav-cta:hover,
.nav-menu .nav-cta:focus-visible {
  background: var(--teal-dark);
  color: #fff;
}

.nav-menu .lang-switch {
  border: 1px solid var(--line);
  color: var(--ink);
}

.nav-menu .lang-switch:hover,
.nav-menu .lang-switch:focus-visible {
  border-color: rgba(29, 127, 120, 0.34);
}

.nav-toggle {
  display: none;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  margin: 2px 0;
  background: var(--ink);
  border-radius: 999px;
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 78vh;
  padding: 8.5rem 1rem 5rem;
  overflow: hidden;
  background: #eaf0eb;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(247, 243, 234, 0.98) 0%, rgba(247, 243, 234, 0.91) 43%, rgba(247, 243, 234, 0.34) 100%),
    url("assets/hero-visual.svg") center right / cover no-repeat;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  height: 1px;
  background: var(--line);
  content: "";
}

.hero-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.9rem;
  color: var(--teal-dark);
  font-size: 0.79rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  margin: 1.45rem 0 0;
  color: #34484f;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.78rem 1.1rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 760;
  line-height: 1.2;
  cursor: pointer;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button.primary {
  background: var(--teal-dark);
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--ink);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line);
  color: var(--ink);
}

.section {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 3rem;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.45rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
  letter-spacing: 0;
}

p {
  margin: 0;
}

.intro p:not(.section-kicker) {
  color: #40545b;
  font-size: 1.08rem;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

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

.service-card {
  min-height: 280px;
  padding: 1.35rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 14px 40px rgba(16, 33, 42, 0.06);
}

.service-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 4.5rem;
  background: rgba(215, 167, 67, 0.18);
  border: 1px solid rgba(215, 167, 67, 0.38);
  border-radius: 50%;
  color: #7d5a09;
  font-size: 0.85rem;
  font-weight: 800;
}

.service-card p,
.process-list p,
.company-panel p,
.contact-inner p {
  margin-top: 0.8rem;
  color: var(--muted);
}

.feature-band {
  background: var(--ink);
  color: #fff;
}

.feature-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 3rem;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0;
}

.feature-band .section-kicker {
  color: #8ad8cd;
}

.process-list {
  display: grid;
  gap: 1rem;
}

.process-list article {
  padding: 1.2rem 0 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.process-list article:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.process-list p {
  color: rgba(255, 255, 255, 0.72);
}

.company-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 2rem;
  align-items: start;
  padding-top: 1rem;
}

.company-panel dl {
  display: grid;
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.company-panel dl div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--line);
}

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

dt {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 760;
}

dd {
  margin: 0;
  font-weight: 700;
}

.contact-section {
  padding: 5rem 1rem;
  background: #e7f0ed;
}

.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.72fr);
  gap: 3rem;
  width: min(1120px, 100%);
  margin: 0 auto;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 20px 55px rgba(16, 33, 42, 0.11);
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  color: #31474f;
  font-weight: 720;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.8rem 0.85rem;
  background: #fbfaf7;
  border: 1px solid rgba(16, 33, 42, 0.18);
  border-radius: var(--radius);
  color: var(--ink);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(29, 127, 120, 0.16);
  outline: none;
}

.contact-form textarea {
  resize: vertical;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.4rem 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer a {
  font-weight: 760;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: grid;
  }

  .nav-menu {
    position: fixed;
    top: 76px;
    right: 1rem;
    left: 1rem;
    display: grid;
    gap: 0.35rem;
    padding: 0.6rem;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
      opacity 160ms ease,
      transform 160ms ease;
  }

  body.nav-open .nav-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    min-height: auto;
    padding-top: 8rem;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(247, 243, 234, 0.98) 0%, rgba(247, 243, 234, 0.88) 62%, rgba(247, 243, 234, 0.72) 100%),
      url("assets/hero-visual.svg") center bottom / cover no-repeat;
  }

  .section-grid,
  .feature-inner,
  .company-panel,
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

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

  .service-icon {
    margin-bottom: 2.6rem;
  }
}

@media (max-width: 560px) {
  .nav {
    width: min(100% - 1rem, 1120px);
  }

  .brand strong {
    font-size: 0.94rem;
  }

  .brand small {
    font-size: 0.72rem;
  }

  .hero {
    padding: 7rem 1rem 4rem;
  }

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

  .section,
  .feature-inner,
  .contact-section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .company-panel dl div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .contact-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}