:root {
  color-scheme: dark;
  --bg: #09090b;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --text: #f4f4f5;
  --muted: rgba(244, 244, 245, 0.7);
  --accent: #818cf8;
  --accent-2: #22d3ee;
  --border: rgba(255, 255, 255, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(129, 140, 248, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(34, 211, 238, 0.12), transparent 26%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: #c7d2fe;
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 64px;
}

.hero,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

.hero {
  padding: 28px;
  margin-bottom: 24px;
}

.card {
  padding: 24px;
  margin-bottom: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(129, 140, 248, 0.14);
  color: #e0e7ff;
  font-size: 13px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.nav a,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  text-decoration: none;
}

.button-link.is-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #020617;
  border-color: transparent;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(32px, 5vw, 48px);
}

h2 {
  font-size: 24px;
  margin-top: 6px;
}

h3 {
  font-size: 18px;
}

p,
ul,
ol {
  margin: 0 0 14px;
}

ul,
ol {
  padding-left: 20px;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.note {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.placeholder {
  color: #fca5a5;
  font-weight: 600;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.table th,
.table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.footer {
  color: var(--muted);
  font-size: 14px;
  margin-top: 28px;
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 960px);
    padding-top: 20px;
  }

  .hero,
  .card {
    border-radius: 22px;
    padding: 20px;
  }

  .grid.cols-2 {
    grid-template-columns: 1fr;
  }
}