:root {
  --navy: #0c2d44;
  --navy-mid: #16415f;
  --gold: #b8955a;
  --gold-line: #d4bc8a;
  --paper: #f6f2ea;
  --cream: #fbf8f3;
  --ink: #1c1c1c;
  --muted: #5a6570;
  --line: rgba(12, 45, 68, 0.12);
  --white: #fff;
  --radius: 2px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

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

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

.wrap {
  width: min(1080px, calc(100% - 40px));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 248, 243, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.brand img {
  height: 58px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  letter-spacing: 0.12em;
}

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

.nav a:hover {
  color: var(--gold);
}

.menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}

.menu-btn i,
.menu-btn i::before,
.menu-btn i::after {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: var(--navy);
  content: "";
}

/* Hero */

.hero {
  padding: 88px 0 72px;
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--cream) 100%);
  border-bottom: 1px solid var(--line);
}

.hero-kicker {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.28em;
}

.hero h1 {
  margin: 0 0 24px;
  max-width: 14em;
  color: var(--navy);
  font-family: "Shippori Mincho", serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.08em;
}

.hero p {
  margin: 0;
  max-width: 38em;
  color: var(--muted);
  font-size: 16px;
}

.hero-rule {
  width: 48px;
  height: 1px;
  margin: 28px 0;
  background: var(--gold);
}

/* Sections */

section {
  padding: 88px 0;
}

.section-label {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.32em;
}

.section-title {
  margin: 0 0 48px;
  color: var(--navy);
  font-family: "Shippori Mincho", serif;
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 600;
  letter-spacing: 0.1em;
}

/* Services */

.services {
  background: var(--white);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.service-card {
  padding: 36px 32px 40px;
  background: var(--white);
}

.service-num {
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.2em;
}

.service-card h3 {
  margin: 0 0 14px;
  color: var(--navy);
  font-family: "Shippori Mincho", serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.service-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.about-copy p {
  margin: 0 0 18px;
  color: var(--muted);
}

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

.facts div {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.facts dt {
  color: var(--gold);
  letter-spacing: 0.12em;
}

.facts dd {
  margin: 0;
  color: var(--navy);
}

.facts a:hover {
  color: var(--gold);
}

/* Contact */

.contact {
  background: var(--navy);
  color: var(--white);
}

.contact .section-label {
  color: var(--gold-line);
}

.contact .section-title {
  color: var(--white);
}

.contact-note {
  max-width: 36em;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
}

.contact address {
  margin: 28px 0 0;
  font-style: normal;
  line-height: 1.9;
}

.contact address span {
  display: block;
  margin: 18px 0 6px;
  color: var(--gold-line);
  font-size: 11px;
  letter-spacing: 0.2em;
}

.contact address a {
  color: var(--white);
}

.contact address a:hover {
  color: var(--gold-line);
}

/* Footer */

.site-footer {
  padding: 22px 0;
  background: var(--navy-mid);
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

/* Mobile */

@media (max-width: 860px) {
  .nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--cream);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 14px 20px;
    border-top: 1px solid var(--line);
  }

  .menu-btn {
    display: block;
  }

  .brand img {
    height: 48px;
  }

  .hero {
    padding: 56px 0 48px;
  }

  section {
    padding: 64px 0;
  }

  .service-grid,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .service-grid {
    gap: 1px;
  }

  .facts div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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