:root {
  --bg: #0b0f19;
  --card: rgba(255, 255, 255, 0.06);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --border: rgba(255, 255, 255, 0.12);
  --accent: #7c5cff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(124, 92, 255, 0.35), transparent 55%),
    radial-gradient(900px 500px at 80% 30%, rgba(0, 196, 255, 0.18), transparent 60%),
    var(--bg);
}

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 56px 20px;
}

.hero {
  padding: 28px 0 18px;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(32px, 4vw, 46px);
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
  max-width: 60ch;
}

.card {
  margin-top: 18px;
  padding: 18px 18px;
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 18px;
  backdrop-filter: blur(10px);
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.link {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.35);
}

.link:hover {
  border-bottom-color: var(--accent);
}

.hint {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer {
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.logo {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
}

.nav-links a:hover {
  color: var(--text);
}