:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --accent: #047857;
  --accent-soft: #d1fae5;
  --hero-from: #059669;
  --hero-to: #064e3b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #1e293b;
    --text: #f8fafc;
    --muted: #cbd5e1;
    --border: #334155;
    --accent: #34d399;
    --accent-soft: rgba(52, 211, 153, 0.16);
    --hero-from: #047857;
    --hero-to: #022c22;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
.hero {
  background: linear-gradient(135deg, var(--hero-from), var(--hero-to));
  color: #fff;
  padding: 56px 16px 72px;
  text-align: center;
  border-radius: 0 0 32px 32px;
}
.hero img { width: 88px; height: 88px; }
.hero h1 { font-size: 44px; letter-spacing: -1.5px; margin: 12px 0 4px; font-weight: 800; }
.hero p { margin: 0; opacity: 0.9; font-size: 18px; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  margin-top: -48px;
  position: relative;
  text-align: center;
}
.features { display: grid; gap: 12px; margin: 24px 0; text-align: left; }
.feature { display: flex; gap: 14px; align-items: center; }
.feature span { font-size: 26px; width: 48px; height: 48px; border-radius: 14px; background: var(--accent-soft); display: grid; place-items: center; flex-shrink: 0; }
.feature b { display: block; }
.feature small { color: var(--muted); font-size: 14px; }
.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 16px;
  margin: 6px;
}
@media (prefers-color-scheme: dark) { .button { color: #0f172a; } }
.button.secondary { background: var(--accent-soft); color: var(--accent); }
.code {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 14px;
  padding: 10px 18px;
  display: inline-block;
  margin: 12px 0;
}
.muted { color: var(--muted); }
footer { text-align: center; color: var(--muted); font-size: 14px; padding: 24px 16px 40px; }
.policy h1 { font-size: 32px; letter-spacing: -0.8px; margin-bottom: 0; }
.policy h2 { margin-top: 32px; font-size: 22px; }
.policy h3 { font-size: 17px; }
.policy hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }