:root {
  color-scheme: light;
  --bg: #f7f4ef;
  --surface: #ffffff;
  --ink: #20201d;
  --muted: #66645f;
  --line: #ded7cb;
  --accent: #2f6f5e;
  --accent-dark: #1e4d41;
  --warm: #c4512d;
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(47, 111, 94, 0.12), transparent 42%),
    linear-gradient(315deg, rgba(196, 81, 45, 0.1), transparent 36%),
    var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-shell {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 40px;
}

.hero {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 32px 0 48px;
}

.logo {
  width: 150px;
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: cover;
  background: #080911;
  box-shadow: 0 18px 45px rgba(32, 32, 29, 0.18);
}

.eyebrow,
.section-label {
  margin: 0 0 10px;
  color: var(--warm);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.7rem, 7vw, 5.7rem);
  line-height: 1.05;
  font-weight: 750;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.2;
}

.lead-ja {
  margin-bottom: 6px;
  max-width: 680px;
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
}

.lead-en,
.secondary,
.contact-note,
.footer {
  color: var(--muted);
}

.lead-en {
  max-width: 620px;
  font-size: 1.05rem;
}

.panel {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.section-copy p {
  margin-bottom: 8px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 18px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button-primary {
  color: #ffffff;
  background: var(--accent);
}

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

.button-secondary {
  color: var(--accent-dark);
  background: var(--surface);
  border-color: var(--line);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--accent);
}

.button:focus-visible {
  outline: 3px solid rgba(47, 111, 94, 0.28);
  outline-offset: 2px;
}

.contact-note {
  margin: 12px 0 0;
  font-size: 0.9rem;
}

.footer {
  width: min(960px, calc(100% - 40px));
  margin: 0 auto;
  padding: 20px 0 36px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
}

@media (max-width: 680px) {
  .site-shell {
    width: min(100% - 28px, 960px);
    padding-top: 44px;
  }

  .hero {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 16px;
    padding-bottom: 34px;
  }

  .logo {
    width: 96px;
  }

  .panel {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px 0;
  }

  .button {
    width: 100%;
  }

  .footer {
    width: min(100% - 28px, 960px);
  }
}