:root {
  --ink: #172033;
  --muted: #697386;
  --line: #dce4ee;
  --panel: #ffffff;
  --soft: #f5f8fb;
  --accent: #0c8f86;
  --accent-dark: #08736c;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}
a { color: inherit; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 228, 238, .85);
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
}
.header-inner,
.content-width,
.footer-inner {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: .02em;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
}
.nav a:hover { color: var(--accent-dark); }

.hero {
  padding: 88px 0 70px;
  background:
    radial-gradient(circle at 85% 20%, rgba(12,143,134,.16), transparent 31%),
    linear-gradient(180deg, #fbfefd 0%, #f5fbfa 100%);
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-weight: 800;
  font-size: 14px;
}
h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.06;
  letter-spacing: -.035em;
}
.hero p {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}
.hero-actions {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 800;
}
.button.secondary {
  background: #fff;
  color: var(--accent-dark);
}

.section { padding: 70px 0; }
.section.soft { background: var(--soft); }
.section h2 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.2;
}
.section-lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.cards {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
}
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); }

.test-label {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 800;
}
.test-description {
  margin: 0 0 16px;
  color: var(--muted);
}

/* MADO バナーエリアを画面幅いっぱいで試す場所 */
.mado-test-fullbleed {
  width: 100%;
  padding: 28px 0;
  background: #f1f8f7;
}
.mado-test-fullbleed__placeholder {
  min-height: 220px;
  border: 2px dashed #6fc9c1;
  display: grid;
  place-items: center;
  color: #277e77;
  font-weight: 800;
}

/* MADO バナーエリアを本文幅の中で試す場所 */
.mado-test-contained {
  margin-top: 22px;
  min-height: 220px;
  border: 2px dashed #9cb1c7;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #5a6c80;
  font-weight: 800;
  background: #fff;
}

.code-note {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #172033;
  color: #f8fbff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .header-inner { min-height: auto; padding: 14px 0; align-items: flex-start; }
  .header-inner { flex-direction: column; gap: 10px; }
  .nav { gap: 12px; }
  .hero { padding: 62px 0 54px; }
  .cards { grid-template-columns: 1fr; }
}