:root {
  --brand: #1f2466;
  --primary: #2f318f;
  --text: #1c1d3a;
  --muted: #5b5d7e;
  --bg: #eef0fb;
  --glass: rgba(255, 255, 255, 0.62);
  --edge: rgba(255, 255, 255, 0.9);
  --glow-1: #9daeff;
  --glow-2: #c7a6ff;
  --glow-3: #8fd0ff;
  --soft: rgba(47, 49, 143, 0.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand: #e4e5ff;
    --primary: #8d90f2;
    --text: #eceeff;
    --muted: #a9abd3;
    --bg: #0d0e2b;
    --glass: rgba(255, 255, 255, 0.07);
    --edge: rgba(255, 255, 255, 0.16);
    --glow-1: #4f5bff;
    --glow-2: #8b45ff;
    --glow-3: #2f8dff;
    --soft: rgba(141, 144, 242, 0.14);
  }
}
* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  min-height: 100vh;
  font:
    17px/1.6 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed;
  inset: -20vmax;
  z-index: -1;
  background:
    radial-gradient(35vmax 35vmax at 15% 10%, var(--glow-1), transparent 70%),
    radial-gradient(30vmax 30vmax at 90% 35%, var(--glow-2), transparent 70%),
    radial-gradient(35vmax 35vmax at 30% 95%, var(--glow-3), transparent 70%);
  opacity: 0.55;
}
a {
  color: var(--primary);
  text-underline-offset: 3px;
}
a:hover {
  text-decoration-thickness: 2px;
}
header,
main,
footer {
  width: min(760px, 100% - 32px);
  margin: 0 auto;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  flex-wrap: wrap;
}
.logo {
  font-weight: 800;
  font-size: 26px;
  letter-spacing: -0.5px;
  color: var(--brand);
  text-decoration: none;
}
nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 15px;
}
nav a {
  color: var(--muted);
  text-decoration: none;
}
nav a:hover,
nav a[aria-current='page'] {
  color: var(--primary);
}
.card {
  background: var(--glass);
  border: 1px solid var(--edge);
  border-radius: 24px;
  padding: 28px;
  margin-bottom: 20px;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 10px 30px rgba(20, 20, 70, 0.08);
}
h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin: 0 0 8px;
  color: var(--brand);
}
h2 {
  font-size: 21px;
  margin: 28px 0 8px;
  color: var(--brand);
}
h2:first-child {
  margin-top: 0;
}
h3 {
  font-size: 17px;
  margin: 20px 0 4px;
}
p,
ul,
ol {
  margin: 0 0 12px;
}
li {
  margin-bottom: 4px;
}
.updated {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 20px;
}
.note {
  background: var(--soft);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 16px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 16px;
  font-size: 15px;
}
th,
td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--edge);
  vertical-align: top;
}
th {
  color: var(--muted);
  font-weight: 600;
}
.table-wrap {
  overflow-x: auto;
}
.hero {
  text-align: center;
  padding: 40px 28px;
}
.hero p {
  font-size: 19px;
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 20px;
}
.badge {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
}
@media (prefers-color-scheme: dark) {
  .badge {
    color: #0d0e2b;
  }
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.grid .card {
  margin: 0;
  padding: 22px;
}
.grid h2 {
  font-size: 18px;
  margin: 0 0 6px;
}
.grid p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}
footer {
  padding: 12px 0 40px;
  font-size: 14px;
  color: var(--muted);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
footer a {
  color: var(--muted);
}
@media (max-width: 480px) {
  .card {
    padding: 20px;
    border-radius: 20px;
  }
}