:root {
  --bg: #0f1020;
  --fg: #e6e6ea;
  --muted: #a1a1b0;
  --brand: #ff4757;
  --accent: #1e90ff;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, sans-serif;
  background: linear-gradient(180deg, #15162e 0%, #0f1020 100%);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 20px;
}

header {
  text-align: center;
  padding: 24px 0;
}

header h1 {
  margin: 0 0 6px;
  font-size: clamp(28px, 4vw, 44px);
  color: var(--brand);
}

header p {
  margin: 0;
  color: var(--muted);
}

main {
  width: min(900px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

section {
  background: #12132a;
  border: 1px solid #22244a;
  border-radius: 12px;
  padding: 20px;
}

h2 {
  margin: 0 0 12px;
  color: var(--accent);
}

.game-info p {
  margin: 0;
  line-height: 1.6;
}

.download {
  text-align: center;
}

.hint {
  color: var(--muted);
  margin: 0 0 16px;
}

.btn-download {
  display: inline-block;
  background: var(--accent);
  color: white;
  text-decoration: none;
  padding: 16px 32px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 18px;
  box-shadow: 0 6px 20px rgba(30, 144, 255, 0.35);
  transition: filter 0.2s;
}

.btn-download:hover {
  filter: brightness(1.08);
}

.instructions ul {
  margin: 0;
  padding-left: 20px;
  list-style: none;
}

.instructions li {
  margin: 8px 0;
  padding-left: 8px;
}

.instructions strong {
  color: var(--accent);
  font-family: monospace;
  background: #111425;
  padding: 2px 6px;
  border-radius: 4px;
}

footer {
  text-align: center;
  padding: 20px;
  color: var(--muted);
}