:root {
  --bg: #0b0f1a;
  --card: #131b2e;
  --text: #e9eefc;
  --muted: #a9b7db;
  --accent: #4da3ff;
  --border: #22304f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #0b0f1a 0%, #0e1422 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
}

.container {
  width: min(920px, 92vw);
  margin: 40px auto;
}

header {
  margin-bottom: 18px;
}

.brand {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.subtitle {
  margin-top: 6px;
  color: var(--muted);
}

nav {
  margin-top: 14px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
}

nav a.active,
nav a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.card {
  background: rgba(19, 27, 46, 0.9);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
}

h1,
h2,
h3 {
  margin-top: 0;
}

h1 {
  font-size: 28px;
  margin-bottom: 6px;
}

h2 {
  margin-top: 24px;
  font-size: 20px;
}

ul {
  padding-left: 20px;
}

p,
li {
  color: var(--text);
}

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

.notice {
  border-left: 3px solid var(--accent);
  padding-left: 12px;
}

.badge {
  display: inline-block;
  margin-top: 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  padding: 3px 10px;
}

a {
  color: #8ec5ff;
}

footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}