:root {
  --ink: #111827;
  --ink-2: #243244;
  --muted: #687386;
  --line: #dce3ec;
  --paper: #ffffff;
  --canvas: #f6f2ed;
  --blue: #2f66e8;
  --sage: #2c8f82;
  --rose: #b85d64;
  --sans: "IBM Plex Sans JP", system-ui, -apple-system, sans-serif;
  --serif: "Zen Old Mincho", serif;
  --latin: "Cormorant Garamond", Georgia, serif;
}

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

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(246, 242, 237, 0.94), rgba(246, 242, 237, 1)),
    repeating-linear-gradient(90deg, rgba(17, 24, 39, 0.025) 0, rgba(17, 24, 39, 0.025) 1px, transparent 1px, transparent 18px);
  color: var(--ink);
  font-family: var(--sans);
  letter-spacing: 0;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: min(960px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(220, 227, 236, 0.8);
  background: rgba(246, 242, 237, 0.86);
  backdrop-filter: blur(18px) saturate(150%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--latin);
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue), var(--sage));
  color: white;
  box-shadow: 0 10px 20px rgba(47, 102, 232, 0.24);
}

.brand-mark svg {
  width: 20px;
  height: 20px;
}

.header-link {
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 700;
}

.hero {
  padding: 74px 0 40px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--rose);
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.35;
}

.lead {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.legal-card {
  margin: 0 0 80px;
  padding: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 60px rgba(23, 49, 111, 0.12);
}

.legal-section + .legal-section {
  margin-top: 36px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 14px;
  font-size: 23px;
  line-height: 1.45;
}

p {
  margin: 0 0 14px;
  color: var(--ink-2);
}

ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 1.25em;
  color: var(--ink-2);
}

.definition {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.definition dt,
.definition dd {
  margin: 0;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.definition dt {
  color: var(--muted);
  font-weight: 700;
}

.definition dd {
  color: var(--ink-2);
}

.note {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 8px;
  background: #eef4f1;
  color: var(--ink-2);
  font-size: 14px;
}

.footer {
  padding: 34px 0;
  background: #101826;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 22px;
}

.footer a {
  color: white;
}

@media (max-width: 680px) {
  .wrap {
    width: min(100% - 34px, 760px);
  }

  .header-inner {
    min-height: 66px;
  }

  .brand {
    font-size: 21px;
  }

  .hero {
    padding: 52px 0 28px;
  }

  .legal-card {
    padding: 26px 20px;
  }

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

  .definition dt {
    padding-bottom: 2px;
    border-bottom: 0;
  }

  .definition dd {
    padding-top: 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}