:root {
  --bg: #0b1020;
  --card: #161d33;
  --accent: #f6821f;
  --text: #e7ecf5;
  --muted: #9aa7c2;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1b2547 0%, var(--bg) 60%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.hero {
  text-align: center;
  padding: 80px 20px 48px;
}

.badge {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .5px;
  color: var(--accent);
  border: 1px solid rgba(246,130,31,.4);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 { font-size: 40px; margin-bottom: 12px; }

.hero p { color: var(--muted); font-size: 17px; }

.btn {
  display: inline-block;
  margin-top: 28px;
  background: var(--accent);
  color: #1a1205;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: transform .08s ease;
}
.btn:active { transform: scale(.96); }

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 14px;
  padding: 22px 24px;
}

.card h2 { margin-bottom: 12px; font-size: 18px; }

.card ul, .card ol { padding-left: 20px; color: var(--muted); }
.card li { margin: 6px 0; }

code {
  background: rgba(255,255,255,.08);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 14px;
  color: #ffd9a8;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 40px 20px 50px;
  font-size: 14px;
}