:root {
  --bg: #0b1220;
  --card: rgba(15, 23, 42, 0.82);
  --text: #e5eefc;
  --muted: #a6b6d4;
  --line: rgba(148, 163, 184, 0.24);
  --primary: #4da3ff;
  --accent: #22c55e;
  --warn: #f59e0b;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(77, 163, 255, 0.16), transparent 32%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 28%),
    linear-gradient(180deg, #09101d 0%, #0b1220 100%);
  min-height: 100vh;
}

.wrap {
  width: min(980px, calc(100% - 32px));
  margin: 48px auto;
}

.hero {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.76));
  box-shadow: var(--shadow);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(77, 163, 255, 0.12);
  color: #cfe3ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.nav a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(148, 163, 184, 0.08);
  color: #e5eefc;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: rgba(77, 163, 255, 0.14);
}

h1 {
  margin: 18px 0 10px;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.04;
}

h2 {
  margin: 0 0 12px;
  font-size: 22px;
}

h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

p,
li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  max-width: 760px;
}

.grid,
.split {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.split {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.card {
  padding: 22px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

ul,
ol {
  padding-left: 22px;
  margin: 12px 0 0;
}

li + li {
  margin-top: 8px;
}

a {
  color: #b8d6ff;
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.12);
  color: #dbeafe;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
}

.notice {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(245, 158, 11, 0.28);
  background: rgba(245, 158, 11, 0.08);
}

.notice strong {
  color: #fde68a;
}

.meta {
  margin-top: 24px;
  text-align: center;
  color: #7f91b4;
  font-size: 13px;
}