:root {
  --bg: #f7f5f0;
  --bg-elevated: #fffdf8;
  --ink: #1a1a18;
  --muted: #5c5a54;
  --line: #d8d4c8;
  --accent: #1f4d3a;
  --space: clamp(1.25rem, 4vw, 3rem);
  --measure: 68rem;
  --display: "Cormorant Garamond", "Hiragino Mincho ProN", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.02em;
}

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

img {
  max-width: 100%;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.04em;
}

h1 {
  font-family: var(--display);
  font-size: clamp(3.5rem, 12vw, 8.5rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: 0.08em;
}

h2 {
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.25;
}

h3 {
  font-size: 1.05rem;
  font-weight: 500;
}

p {
  margin: 0;
  word-break: keep-all;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.5rem 0.85rem;
  background: var(--ink);
  color: var(--bg);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--space);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.logo {
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.25rem);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav a {
  color: var(--muted);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
}

.hero,
.about,
.services,
.company {
  scroll-margin-top: 4.5rem;
  padding: clamp(4rem, 10vw, 8rem) var(--space);
}

.hero {
  display: grid;
  place-items: center;
  min-height: calc(100svh - 3.5rem);
  text-align: center;
}

.hero-mark {
  width: 0.7rem;
  height: 0.7rem;
  margin-bottom: 2.5rem;
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}

.hero-label {
  margin-bottom: 1.25rem;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero-lead {
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.7;
}

.section-label {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.about,
.services,
.company {
  max-width: var(--measure);
  margin: 0 auto;
}

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

.about h2 {
  margin-bottom: 2rem;
}

.about p {
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.05rem;
  word-break: keep-all;
}

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

.services h2 {
  margin-bottom: 3rem;
}

.service-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.service-list li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  padding: 2rem 1.5rem 2rem 0;
  border-bottom: 1px solid var(--line);
}

.service-list li:nth-child(odd) {
  padding-right: 2.5rem;
  border-right: 1px solid var(--line);
}

.service-list li:nth-child(even) {
  padding-left: 2.5rem;
}

.service-index {
  color: var(--accent);
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.service-list p {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.company h2 {
  margin-bottom: 2.5rem;
}

.company-meta {
  display: grid;
  gap: 1.5rem;
  margin: 0;
  max-width: 28rem;
}

.company-meta div {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.company-meta dt {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.company-meta dd {
  margin: 0;
}

.site-footer {
  padding: 2rem var(--space) 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.site-footer p {
  max-width: var(--measure);
  margin: 0 auto;
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.65rem;
    padding-bottom: 0.9rem;
  }

  .site-nav {
    gap: 1.1rem;
  }

  .hero {
    min-height: 80svh;
    padding-top: 5rem;
  }

  .hero,
  .about,
  .services,
  .company {
    scroll-margin-top: 6rem;
  }

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

  .service-list li,
  .service-list li:nth-child(odd),
  .service-list li:nth-child(even) {
    padding: 1.5rem 0;
    border-right: 0;
  }

  .company-meta div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}