:root {
  --bg: #0b0f14;
  --surface: #161d27;
  --border: #1f2933;
  --text: #e8eef5;
  --muted: #9aa6b2;
  --brand: #4f8cff;
  --accent: #00d4a6;
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--brand); text-decoration: none; }
main { max-width: 880px; margin: 0 auto; padding: 0 24px 80px; }

.nav {
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); }
.logo-mark {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--brand) 0%, #7c5cff 100%);
  border-radius: 8px;
  display: grid; place-items: center;
  font-weight: 900; color: white;
}
.logo-text { font-weight: 800; }

.hero { text-align: center; padding: 60px 0 40px; }
.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 900;
  margin: 0 0 12px;
}
.lead { color: var(--muted); font-size: 18px; margin: 0 0 24px; }
.version-info {
  display: inline-flex; gap: 10px;
  color: var(--muted);
  font-size: 14px;
  padding: 8px 16px;
  background: var(--surface);
  border-radius: 999px;
  border: 1px solid var(--border);
  margin-bottom: 32px;
}
.version-info strong { color: var(--accent); }

.dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-bottom: 40px;
}
.dl-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 20px;
  text-align: left;
  color: var(--text);
  transition: border-color .15s, transform .15s;
}
.dl-btn:hover { border-color: var(--brand); transform: translateY(-2px); }
.dl-btn.primary {
  background: linear-gradient(135deg, var(--brand) 0%, #3d77e8 100%);
  border-color: var(--brand);
  color: white;
}
.dl-btn.primary small { color: rgba(255, 255, 255, 0.85); }
.dl-label { font-weight: 700; font-size: 16px; margin-bottom: 4px; }
.dl-btn small { display: block; color: var(--muted); font-size: 13px; }

.qr { text-align: center; padding: 40px 0; }
.qr h2 { margin: 0 0 20px; }
.qr-box {
  display: inline-flex; align-items: center; gap: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 30px;
}
.qr-box img {
  background: white;
  padding: 10px;
  border-radius: 8px;
}
.qr-box p { color: var(--muted); margin: 0; }

.install { padding: 40px 0; }
.install h2 { margin: 0 0 20px; }
.install ol { padding-left: 20px; }
.install li { margin-bottom: 16px; }
.install small { display: block; color: var(--muted); margin-top: 4px; font-size: 13px; }
.install code {
  background: var(--surface);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 13px;
}
.callout {
  background: rgba(0, 212, 166, 0.08);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 18px 22px;
  margin-top: 24px;
}
.callout strong { color: var(--accent); }
.callout p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

.history { padding: 40px 0; }
.history h2 { margin: 0 0 20px; }
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: rgba(255, 255, 255, 0.03); color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
tr:last-child td { border-bottom: none; }

footer {
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
}