:root {
  color-scheme: light dark;
  --bg: #0b1020;
  --card: rgba(255, 255, 255, 0.06);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.66);
  --link: #8ab4ff;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}


@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --card: rgba(0, 0, 0, 0.04);
    --text: rgba(0, 0, 0, 0.9);
    --muted: rgba(0, 0, 0, 0.62);
    --link: #0b57d0;
    --border: rgba(0, 0, 0, 0.12);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans,
    Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(900px 600px at 10% 0%, rgba(138, 180, 255, 0.22), transparent 60%),
    radial-gradient(900px 600px at 90% 30%, rgba(140, 255, 197, 0.12), transparent 55%), var(--bg);
  color: var(--text);
}

.container {
  max-width: 860px;
  padding: 28px 16px 48px;
  margin: 0 auto;
}

.header {
  display: flex;
  gap: 14px;
  align-items: center;
  margin: 12px 0 22px;
}

.badge {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(138, 180, 255, 0.26), rgba(140, 255, 197, 0.16));
  box-shadow: var(--shadow);
  font-weight: 700;
  letter-spacing: 0.4px;
}

h1 {
  font-size: 28px;
  line-height: 1.15;
  margin: 0;
}

h2 {
  font-size: 16px;
  margin: 0 0 10px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 6px 0 0;
  color: var(--muted);
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 16px;
  padding: 16px;
  margin: 12px 0;
  box-shadow: var(--shadow);
}

.links {
  margin: 0;
  padding-left: 18px;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.hint {
  color: var(--muted);
  font-size: 0.92em;
}

.footer {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
}