:root {
  color-scheme: light;
  --ink: #18202a;
  --muted: #586372;
  --line: #d9e1e8;
  --paper: #f8fafb;
  --surface: #ffffff;
  --accent: #0f766e;
  --accent-strong: #0b4f4a;
  --warm: #d99a2b;
  --shadow: 0 20px 55px rgba(24, 32, 42, 0.12);
  font-family:
    "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", "Noto Sans JP",
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 72px);
  background: rgba(248, 250, 251, 0.92);
  border-bottom: 1px solid rgba(217, 225, 232, 0.88);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  line-height: 1;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 22px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 600;
}

.nav a {
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(44px, 7vw, 88px) clamp(20px, 5vw, 72px) clamp(32px, 5vw, 56px);
  background:
    linear-gradient(110deg, rgba(15, 118, 110, 0.1), rgba(217, 154, 43, 0.08) 42%, transparent 64%),
    var(--paper);
}

.hero-content {
  max-width: 680px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  width: max-content;
  max-width: 100%;
  margin: 0;
  font-size: 5rem;
  line-height: 1;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: keep-all;
}

.lead {
  max-width: 620px;
  margin: 24px 0 0;
  color: #263241;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.8;
}

.hero-visual {
  margin: 0;
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 760;
  object-fit: cover;
}

.section {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) minmax(0, 0.64fr);
  gap: clamp(24px, 6vw, 80px);
  padding: clamp(56px, 8vw, 104px) clamp(20px, 5vw, 72px);
  background: var(--surface);
}

.section-muted {
  background: #eef5f3;
}

.section-heading {
  align-self: start;
}

h2 {
  margin: 0;
  font-size: 2.7rem;
  line-height: 1.18;
  letter-spacing: 0;
}

.text-block {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.02rem;
}

.text-block p {
  margin: 0;
}

.text-block p + p {
  margin-top: 18px;
}

.overview {
  display: grid;
  gap: 12px;
  margin: 0;
}

.overview div {
  display: grid;
  grid-template-columns: minmax(96px, 0.26fr) minmax(0, 0.74fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(24, 32, 42, 0.13);
}

.overview dt {
  color: var(--accent-strong);
  font-weight: 800;
}

.overview dd {
  margin: 0;
  color: #263241;
  font-weight: 700;
}

.overview address {
  font-style: normal;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.service {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.service h3 {
  margin: 0 0 12px;
  font-size: 1.08rem;
  line-height: 1.4;
}

.service p {
  margin: 0;
  color: var(--muted);
}

.contact {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.1), rgba(217, 154, 43, 0.1)),
    var(--surface);
}

.contact-panel {
  max-width: 760px;
  padding: 26px 28px;
  border-left: 5px solid var(--accent);
  background: rgba(255, 255, 255, 0.75);
}

.contact-panel p {
  margin: 0;
  color: #263241;
  font-weight: 600;
}

.contact-panel a {
  color: var(--accent-strong);
  font-weight: 800;
  text-decoration-color: rgba(15, 118, 110, 0.45);
  text-underline-offset: 4px;
}

.contact-panel a:hover {
  text-decoration-color: var(--accent-strong);
}

.site-footer {
  padding: 28px clamp(20px, 5vw, 72px);
  background: var(--ink);
  color: #e9eef2;
}

.site-footer p {
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 880px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

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

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

  h1 {
    font-size: 4.4rem;
  }

  h2 {
    font-size: 2.35rem;
  }
}

@media (max-width: 560px) {
  .site-header {
    gap: 10px;
    min-height: 0;
  }

  .nav {
    gap: 4px 14px;
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 36px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2rem;
  }

  .lead {
    font-size: 1.08rem;
  }

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

  .contact-panel,
  .service {
    padding: 22px;
  }
}