:root {
  --bg: #090d12;
  --surface: #111821;
  --surface-2: #16202c;
  --fg: #f5f7fb;
  --muted: #9aa8bb;
  --primary: #14b886;
  --primary-strong: #54e0b8;
  --on-primary: #06100c;
  --border: #243244;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(120% 60% at 50% 0%, #123028 0%, rgba(9, 13, 18, 0) 60%),
    var(--bg);
  color: var(--fg);
  font: 400 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  padding: 0 20px env(safe-area-inset-bottom);
}

.wrap {
  max-width: 620px;
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero { text-align: center; }

.app-icon {
  border-radius: 24px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, .45);
  display: block;
  margin: 0 auto 20px;
}

h1 {
  font-size: clamp(26px, 7vw, 34px);
  line-height: 1.2;
  letter-spacing: -.02em;
  margin: 0 0 12px;
}

.lede {
  color: var(--muted);
  margin: 0 auto 28px;
  max-width: 46ch;
}

.cta {
  align-items: center;
  background: linear-gradient(180deg, var(--primary-strong), var(--primary));
  border-radius: 999px;
  box-shadow: 0 10px 26px rgba(20, 184, 134, .28);
  color: var(--on-primary);
  display: inline-flex;
  font-size: 17px;
  font-weight: 700;
  gap: 10px;
  justify-content: center;
  min-height: 56px;
  padding: 0 30px;
  text-decoration: none;
  width: 100%;
  max-width: 340px;
}

.cta:active { transform: translateY(1px); }

.cta:focus-visible {
  outline: 3px solid var(--primary-strong);
  outline-offset: 3px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 20px 0 0;
}

.pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  padding: 6px 12px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 28px;
  padding: 22px;
}

.card h2 {
  font-size: 18px;
  margin: 0 0 12px;
}

.list {
  color: var(--muted);
  margin: 0;
  padding-left: 20px;
}

.list li + li { margin-top: 10px; }

.list strong { color: var(--fg); font-weight: 600; }

.foot {
  color: var(--muted);
  margin-top: 34px;
  text-align: center;
}

.foot nav {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.foot a { color: var(--primary-strong); }

.small { font-size: 13px; margin: 12px 0 0; }

.prose {
  color: var(--muted);
  text-align: left;
}

.prose h1, .prose h2 { color: var(--fg); }

.prose h2 { font-size: 18px; margin: 26px 0 8px; }

.prose a { color: var(--primary-strong); }

.back {
  color: var(--primary-strong);
  display: inline-block;
  margin-bottom: 18px;
  text-decoration: none;
}