:root {
  --accent: #22a7b8;
  --soft: #def8fb;
  --deep: #0a7383;
  --ink: #151821;
  --muted: #5e6680;
  --surface: rgba(255, 255, 255, 0.78);
  --outline: rgba(21, 24, 33, 0.08);
  color-scheme: light;
  font-family: "Onest", "Noto Sans JP", system-ui, sans-serif;
}

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

body {
  margin: 0;
  min-height: 100svh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 12%, rgba(255,255,255,0.92) 0, rgba(255,255,255,0) 35%),
    linear-gradient(150deg, var(--soft) 0%, rgba(255,255,255,0.96) 44%, color-mix(in srgb, var(--accent) 22%, white) 100%);
}

a {
  color: inherit;
}

.page {
  width: min(980px, calc(100% - 1rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.9rem;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--deep));
  box-shadow: 0 18px 36px color-mix(in srgb, var(--accent) 35%, transparent);
  font-weight: 800;
}

.brand-text {
  font-family: "Onest", "Noto Sans JP", sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.locale-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.locale-links a {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  text-decoration: none;
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--outline);
  color: var(--muted);
}

.locale-links a.is-active {
  color: white;
  background: rgba(21,24,33,0.92);
}

.card {
  position: relative;
  overflow: hidden;
  padding: clamp(1rem, 2vw, 1.6rem);
  border-radius: 2rem;
  background: var(--surface);
  border: 1px solid var(--outline);
  box-shadow: 0 28px 72px rgba(24, 32, 52, 0.14);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(255,255,255,0.42), rgba(255,255,255,0));
  pointer-events: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 1rem;
  align-items: center;
}

.swatch {
  min-height: 22rem;
  border-radius: 1.6rem;
  background: linear-gradient(145deg, var(--soft), var(--accent), var(--deep));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 22px 50px rgba(17, 22, 37, 0.16);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--deep);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 800;
}

h1 {
  margin: 0;
  font-family: "Onest", "Noto Sans JP", sans-serif;
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
  font-weight: 800;
}

.lead,
.meta,
.footer {
  color: var(--muted);
}

.lead {
  margin: 0.95rem 0 0;
  font-size: 1rem;
}

.hex-row,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.chip,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid var(--outline);
}

.chip {
  background: rgba(255,255,255,0.84);
}

.button {
  background: linear-gradient(135deg, var(--accent), var(--deep));
  color: white;
  font-weight: 800;
  box-shadow: 0 18px 34px color-mix(in srgb, var(--accent) 32%, transparent);
}

.button.secondary {
  background: rgba(255,255,255,0.88);
  color: var(--ink);
  box-shadow: none;
}

.footer {
  text-align: center;
  margin-top: 1.4rem;
  font-size: 0.94rem;
}

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .brand,
  .locale-links {
    justify-content: center;
  }

  .swatch {
    min-height: 17rem;
  }
}