:root {
  --color-text: #17324d;
  --color-muted: #617387;
  --color-primary: #126da4;
  --color-primary-dark: #0b537f;
  --color-border: #dce6ec;
  --color-surface: #f5f9fb;
  --max-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.96);
}

.site-header__inner,
.leaflet,
.site-footer {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  min-height: 88px;
  align-items: center;
}

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

h1 {
  margin-bottom: 0;
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  font-weight: 650;
  letter-spacing: 0.06em;
}

.leaflet {
  padding-block: clamp(56px, 8vw, 96px) clamp(64px, 10vw, 120px);
}

.leaflet__heading {
  margin-bottom: clamp(32px, 5vw, 52px);
  text-align: center;
}

.leaflet__eyebrow {
  margin-bottom: 8px;
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1.35;
  letter-spacing: 0.04em;
}

.leaflet__heading > p:last-child {
  margin-bottom: 0;
  color: var(--color-muted);
}

.leaflet__pages {
  display: grid;
  gap: clamp(24px, 5vw, 48px);
}

.leaflet__pages figure {
  margin-bottom: 0;
}

.leaflet__pages img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 0 18px 48px rgba(20, 55, 78, 0.1);
}

.leaflet__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(36px, 6vw, 64px);
}

.button {
  display: flex;
  width: 100%;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 22px;
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.button--secondary {
  background: #fff;
  color: var(--color-primary);
}

.button__icon {
  flex: 0 0 auto;
  font-size: 1.25rem;
  line-height: 1;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary:hover {
  background: var(--color-primary-dark);
}

.button--secondary:hover {
  background: var(--color-surface);
  color: var(--color-primary-dark);
}

.button:focus-visible {
  outline: 3px solid rgba(18, 109, 164, 0.3);
  outline-offset: 3px;
}

.leaflet__contact {
  margin-top: clamp(24px, 4vw, 40px);
}

.contact-button {
  display: flex;
  min-height: 112px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  padding: 24px;
  border-radius: 4px;
  background: var(--color-text);
  color: #fff;
  text-align: center;
  text-decoration: none;
  transition: background-color 180ms ease, transform 180ms ease;
}

.contact-button__label {
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.contact-button__address {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.875rem;
}

.contact-button:hover {
  transform: translateY(-2px);
  background: var(--color-primary-dark);
}

.contact-button:focus-visible {
  outline: 3px solid rgba(18, 109, 164, 0.3);
  outline-offset: 3px;
}

.site-footer {
  padding-block: 24px 36px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  text-align: center;
}

.site-footer p {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .site-header__inner,
  .leaflet,
  .site-footer {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .site-header__inner {
    min-height: 72px;
  }

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

  .button {
    min-height: 58px;
  }
}

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

  .button {
    transition: none;
  }

  .contact-button {
    transition: none;
  }
}