* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, Segoe UI, Roboto, Arial;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(255,140,66,.12), transparent 60%),
              #0b0f14;
  color: #e8eef6;
}

.container {
  max-width: 760px;
  margin: auto;
  padding: 40px 20px 60px;
}

.hero {
  text-align: center;
  margin-bottom: 40px;
}

.logo {
  width: 96px;
  height: 96px;
  margin-bottom: 16px;
}

h1 {
  margin: 0;
  font-size: 36px;
}

.subtitle {
  color: rgba(232,238,246,.7);
  margin: 12px 0 24px;
}

.downloadBtn {
  display: inline-block;
  padding: 16px 28px;
  font-size: 18px;
  font-weight: 700;
  border-radius: 18px;
  text-decoration: none;
  color: #000;
  background: linear-gradient(135deg, #ff8c42, #ffb703);
  box-shadow: 0 12px 40px rgba(0,0,0,.45);
}

.downloadBtn:hover {
  transform: translateY(-2px);
}

.meta {
  margin-top: 12px;
  font-size: 13px;
  opacity: .7;
}

.card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  padding: 20px 24px;
  margin-bottom: 20px;
}

.card.warn {
  border-color: rgba(255,140,66,.4);
  background: rgba(255,140,66,.08);
}

.card h2 {
  margin-top: 0;
}

ol {
  padding-left: 18px;
}

footer {
  text-align: center;
  margin-top: 40px;
  font-size: 13px;
  opacity: .6;
}