:root {
  color-scheme: light dark;
  --background: #f6f7fb;
  --card: rgba(255, 255, 255, 0.94);
  --text: #161925;
  --muted: #5f6472;
  --border: rgba(22, 25, 37, 0.12);
  --accent: #5664d8;
  --accent-soft: rgba(86, 100, 216, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0d1020;
    --card: rgba(24, 28, 48, 0.95);
    --text: #f1f2f7;
    --muted: #b3b7c7;
    --border: rgba(255, 255, 255, 0.13);
    --accent: #9aa5ff;
    --accent-soft: rgba(154, 165, 255, 0.12);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(115, 86, 216, 0.18), transparent 36rem),
    radial-gradient(circle at top right, rgba(61, 160, 210, 0.14), transparent 32rem),
    var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 40px auto;
  padding: clamp(24px, 5vw, 56px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 18px 60px rgba(8, 12, 30, 0.12);
}

header {
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 7vw, 3.25rem);
}

h2 {
  margin-top: 40px;
  font-size: 1.45rem;
}

h3 {
  margin-top: 24px;
  font-size: 1.1rem;
}

p,
li {
  max-width: 75ch;
}

a {
  color: var(--accent);
  font-weight: 600;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.notice {
  margin: 28px 0;
  padding: 18px 20px;
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

th,
td {
  padding: 12px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--accent-soft);
}

footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  main {
    width: 100%;
    margin: 0;
    border: 0;
    border-radius: 0;
  }

  table,
  tbody,
  tr,
  th,
  td {
    display: block;
  }

  th {
    border-bottom: 0;
  }
}