:root {
  --cream-50: #fafaf7;
  --cream-100: #f5f3ee;
  --cream-200: #ebe7dd;

  --sage-50: #f2f6f1;
  --sage-100: #e0ebdd;
  --sage-200: #c2d7bb;
  --sage-500: #5c8a6e;
  --sage-600: #476e55;
  --sage-700: #385643;

  --ink-400: #8b8b87;
  --ink-600: #5a5a55;
  --ink-700: #3d3d39;
  --ink-800: #2a2a26;
  --ink-900: #1a1a17;

  --shadow-soft: 0 1px 3px rgba(60, 50, 40, 0.04), 0 1px 2px rgba(60, 50, 40, 0.06);
  --shadow-card: 0 4px 12px rgba(60, 50, 40, 0.04), 0 1px 3px rgba(60, 50, 40, 0.06);

  --header-h: 64px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  min-height: 100vh;
  color: var(--ink-800);
  background: var(--cream-50);
  font-family:
    "Inter",
    "Noto Sans JP",
    -apple-system,
    BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    sans-serif;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
p,
dl,
dd,
dt,
figure,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
}

a {
  color: inherit;
}

/* ---------- Layout primitives ---------- */

.container {
  width: 100%;
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow {
  max-width: 768px;
}

.section {
  padding: 96px 0;
  border-top: 1px solid var(--cream-200);
}

.section--white {
  background: #ffffff;
}

.section--cream {
  background: var(--cream-50);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 40px;
  align-items: start;
}

.col-4 {
  grid-column: span 4 / span 4;
}

.col-8 {
  grid-column: span 8 / span 8;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--cream-200);
}

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink-900);
}

.brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 9999px;
  background: var(--sage-500);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand__mark--sm {
  width: 28px;
  height: 28px;
  font-size: 0.85rem;
}

.brand__name {
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--ink-900);
  font-size: 0.95rem;
}

.global-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 28px;
}

.global-nav a {
  text-decoration: none;
  font-size: 0.875rem;
  color: var(--ink-600);
  transition: color 0.15s ease;
  font-weight: 500;
}

.global-nav a:hover {
  color: var(--sage-600);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--cream-200);
  background: #ffffff;
  padding: 0;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 4px auto;
  background: var(--ink-800);
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.18s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--sage-50), var(--cream-50));
  pointer-events: none;
}

.hero__inner {
  position: relative;
  padding: 96px 24px;
}

.eyebrow-pill {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 9999px;
  background: #ffffff;
  border: 1px solid var(--sage-200);
  color: var(--sage-700);
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}

.hero__title {
  font-size: clamp(2.25rem, 5.6vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink-900);
}

.hero__lead {
  margin-top: 24px;
  max-width: 640px;
  color: var(--ink-600);
  font-size: 1.125rem;
  line-height: 1.7;
}

.hero__actions {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 500;
  border-radius: 8px;
  padding: 14px 24px;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: inherit;
  line-height: 1;
}

.btn-dark {
  background: var(--ink-900);
  color: #ffffff;
}

.btn-dark:hover {
  background: var(--ink-800);
}

.btn-ghost {
  background: #ffffff;
  color: var(--ink-800);
  border-color: var(--cream-200);
}

.btn-ghost:hover {
  background: var(--cream-100);
}

.btn-sm {
  padding: 12px 20px;
  font-size: 0.875rem;
}

/* ---------- Section primitives ---------- */

.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--sage-600);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(1.875rem, 3.6vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ink-900);
}

.section-title--md {
  font-size: clamp(1.625rem, 2.8vw, 1.875rem);
}

.section-title .accent {
  color: var(--sage-600);
}

.section-lead {
  margin-top: 16px;
  max-width: 720px;
  color: var(--ink-600);
  font-size: 1rem;
  line-height: 1.75;
}

.prose {
  color: var(--ink-600);
  font-size: 1rem;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.prose p {
  margin: 0;
}

/* ---------- Product / Feature cards ---------- */

.feature-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 24px;
  background: var(--cream-50);
  border: 1px solid var(--cream-200);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
}

.feature-card h3 {
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-900);
  margin-bottom: 8px;
  letter-spacing: -0.005em;
}

.feature-card p {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink-600);
}

.cta-bar {
  margin-top: 48px;
  padding: 28px 32px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--sage-50), var(--cream-100));
  border: 1px solid var(--sage-100);
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: space-between;
}

.cta-bar__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sage-700);
  margin-bottom: 4px;
}

.cta-bar__body {
  color: var(--ink-800);
  font-size: 0.95rem;
}

/* ---------- Services ---------- */

.services-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  padding: 24px;
  background: #ffffff;
  border: 1px solid var(--cream-200);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  display: flex;
  gap: 20px;
}

.service-card__no {
  flex-shrink: 0;
  width: 40px;
  color: var(--sage-500);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.01em;
}

.service-card h3 {
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-900);
  margin-bottom: 6px;
  letter-spacing: -0.005em;
  line-height: 1.45;
}

.service-card p {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--ink-600);
}

/* ---------- Message ---------- */

.ceo-card {
  margin-top: 32px;
  padding: 24px;
  background: var(--sage-50);
  border: 1px solid var(--sage-100);
  border-radius: 16px;
}

.ceo-card__role {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sage-700);
}

.ceo-card__name {
  margin-top: 4px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink-900);
}

.ceo-card__romaji {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--ink-400);
  letter-spacing: 0.04em;
}

/* ---------- Company info ---------- */

.company-card {
  background: #ffffff;
  border: 1px solid var(--cream-200);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.company-dl {
  display: flex;
  flex-direction: column;
}

.company-row {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 8px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--cream-200);
}

.company-row:last-child {
  border-bottom: none;
}

.company-row dt {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink-600);
}

.company-row dd {
  color: var(--ink-900);
  line-height: 1.7;
  font-size: 0.95rem;
}

.bullet-list {
  margin: 0;
  padding-left: 20px;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bullet-list li {
  line-height: 1.7;
}

/* ---------- Contact ---------- */

.contact {
  text-align: center;
}

.contact .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.contact__actions {
  margin-top: 32px;
  display: flex;
  justify-content: center;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--cream-200);
  background: var(--cream-50);
}

.site-footer__inner {
  padding: 40px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-700);
}

.site-footer__copy {
  font-size: 0.75rem;
  color: var(--ink-400);
  letter-spacing: 0.02em;
}

.site-footer__nav {
  display: flex;
  gap: 20px;
}

.site-footer__nav a {
  font-size: 0.75rem;
  color: var(--ink-400);
  text-decoration: none;
  transition: color 0.15s ease;
}

.site-footer__nav a:hover {
  color: var(--sage-600);
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .section {
    padding: 72px 0;
  }

  .hero__inner {
    padding: 72px 24px;
  }

  .grid-12 {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .col-4,
  .col-8 {
    grid-column: 1 / -1;
  }

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

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .global-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(250, 250, 247, 0.98);
    backdrop-filter: saturate(140%) blur(14px);
    border-bottom: 1px solid var(--cream-200);
    padding: 12px 24px 20px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s ease, opacity 0.22s ease;
  }

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

  .global-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .global-nav a {
    display: block;
    padding: 14px 12px;
    border-radius: 10px;
    font-size: 1rem;
    color: var(--ink-800);
  }

  .global-nav a:hover {
    background: var(--cream-100);
  }

  .hero__title {
    font-size: clamp(2rem, 8.5vw, 2.75rem);
  }

  .hero__lead {
    font-size: 1rem;
  }

  .feature-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: 20px;
  }

  .cta-bar {
    padding: 24px;
  }

  .company-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 18px 20px;
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

  .hero__inner {
    padding: 56px 18px;
  }

  .btn {
    width: 100%;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }
}