:root {
  color-scheme: light dark;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-soft: #edf3ff;
  --text: #172033;
  --muted: #5e697d;
  --line: #dce3ef;
  --primary: #2458d6;
  --primary-dark: #173c9a;
  --focus: #ffb000;
  --shadow: 0 18px 50px rgba(35, 65, 120, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--primary-dark);
}

a:focus-visible {
  border-radius: 4px;
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: var(--surface);
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}

.nav,
.container {
  width: min(100% - 32px, 820px);
  margin-inline: auto;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: var(--text);
  font-size: 1.22rem;
  font-weight: 780;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  margin-right: 9px;
  place-items: center;
  border-radius: 11px;
  background: var(--primary);
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: -0.03em;
  vertical-align: middle;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.92rem;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
}

.nav-links a[aria-current="page"] {
  color: var(--primary);
  font-weight: 700;
}

main {
  padding: 64px 0 80px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.2rem, 7vw, 4rem);
}

h2 {
  margin: 48px 0 14px;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
}

h3 {
  margin: 28px 0 8px;
  font-size: 1.08rem;
}

p,
li {
  max-width: 74ch;
}

.lede {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.meta {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.notice,
.card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.notice {
  margin: 32px 0;
  padding: 20px 22px;
}

.notice strong {
  display: block;
  margin-bottom: 4px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.card {
  padding: 24px;
}

.card h2 {
  margin: 0 0 10px;
}

.card p {
  margin: 0 0 18px;
  color: var(--muted);
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

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

.toc {
  margin: 32px 0;
  padding: 20px 22px;
  border-left: 4px solid var(--primary);
  border-radius: 0 14px 14px 0;
  background: var(--surface-soft);
}

.toc strong {
  display: block;
  margin-bottom: 8px;
}

.toc ul {
  columns: 2;
  margin: 0;
  padding-left: 20px;
}

.legal-section {
  scroll-margin-top: 24px;
}

.data-table-wrap {
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
  font-size: 0.9rem;
}

tr:last-child td {
  border-bottom: 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 680px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 14px 0 8px;
  }

  .nav-links {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
  }

  main {
    padding-top: 44px;
  }

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

  .toc ul {
    columns: 1;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1320;
    --surface: #151e2e;
    --surface-soft: #1a2944;
    --text: #f1f5fc;
    --muted: #b7c2d4;
    --line: #2c3a52;
    --primary: #8eafff;
    --primary-dark: #b8ccff;
    --focus: #ffd166;
    --shadow: none;
  }
}

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