:root {
  color-scheme: light dark;
  --background: #f5f2ff;
  --surface: rgba(255, 255, 255, 0.94);
  --surface-soft: #eee7ff;
  --primary: #6750a4;
  --primary-dark: #4f378b;
  --text: #211a2d;
  --muted: #655f6f;
  --outline: rgba(80, 65, 115, 0.15);
  --shadow: 0 20px 60px rgba(66, 48, 110, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 8% 4%, rgba(211, 194, 255, 0.62), transparent 30rem),
    radial-gradient(circle at 94% 94%, rgba(255, 210, 235, 0.42), transparent 28rem),
    var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

.page {
  width: min(100% - 32px, 860px);
  margin: 0 auto;
  padding: 28px 0 42px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary-dark);
  font-weight: 900;
  letter-spacing: 0.14em;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 13px;
  background: var(--primary);
  box-shadow: 0 10px 24px rgba(103, 80, 164, 0.22);
  color: #fff;
  letter-spacing: 0;
}

.top-nav,
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.top-nav a,
.footer-nav a,
main a {
  color: var(--primary-dark);
  font-weight: 700;
  text-underline-offset: 3px;
}

.top-nav a {
  font-size: 0.9rem;
}

main {
  margin-top: 38px;
  padding: clamp(24px, 6vw, 52px);
  border: 1px solid var(--outline);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 1.2;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.5rem);
  letter-spacing: -0.045em;
}

h2 {
  margin: 36px 0 10px;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  letter-spacing: -0.02em;
}

h3 {
  margin: 22px 0 8px;
  font-size: 1.08rem;
}

p,
li {
  color: var(--muted);
}

p {
  margin: 10px 0;
}

ul {
  margin: 10px 0;
  padding-left: 1.35rem;
}

li + li {
  margin-top: 7px;
}

.lead {
  margin-top: 16px;
  font-size: 1.08rem;
}

.effective-date {
  display: inline-block;
  margin-top: 20px;
  padding: 8px 13px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--primary-dark);
  font-size: 0.9rem;
  font-weight: 800;
}

.notice {
  margin-top: 18px;
  padding: 16px 18px;
  border-left: 4px solid var(--primary);
  border-radius: 0 16px 16px 0;
  background: var(--surface-soft);
}

.notice p {
  margin: 0;
  color: var(--primary-dark);
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.86rem;
}

a:focus-visible {
  border-radius: 4px;
  outline: 3px solid rgba(103, 80, 164, 0.32);
  outline-offset: 3px;
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 24px, 860px);
    padding-top: 18px;
  }

  .site-header,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    margin-top: 26px;
    border-radius: 24px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #15121d;
    --surface: rgba(35, 30, 46, 0.96);
    --surface-soft: #332943;
    --primary: #bda7f2;
    --primary-dark: #d7c7ff;
    --text: #f5efff;
    --muted: #cec5d8;
    --outline: rgba(225, 214, 246, 0.16);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
  }

  body {
    background:
      radial-gradient(circle at 8% 4%, rgba(103, 80, 164, 0.25), transparent 30rem),
      radial-gradient(circle at 94% 94%, rgba(125, 62, 96, 0.2), transparent 28rem),
      var(--background);
  }

  .mark {
    background: #6750a4;
  }
}

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