:root {
  --bg: #f8f9fb;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #7c7c7c;
  --green: #4caf50;
  --green-dark: #3d9140;
  --blue: #2196f3;
  --line: #e8e8e8;
  --navy: #1a2b3c;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Montserrat', 'Segoe UI', system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--blue);
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.hero {
  text-align: center;
  padding: 32px 0 24px;
}

.logo {
  width: min(100%, 320px);
  height: auto;
  margin: 0 auto 20px;
  display: block;
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-dark);
  background: #e8f5e9;
  border: 1px solid #c8e6c9;
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 16px;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--navy);
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 auto 28px;
  max-width: 34rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
  margin-bottom: 20px;
}

.card h2 {
  font-size: 1.1rem;
  margin: 0 0 12px;
  color: var(--navy);
}

.features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.features li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--text);
}

.features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

.download-btn {
  display: block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 16px 24px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.download-btn:hover {
  background: var(--green-dark);
}

.download-btn.disabled {
  background: #b0b0b0;
  pointer-events: none;
}

.download-note {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  margin: 12px 0 0;
}

.steps {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text);
}

.steps li {
  margin-bottom: 8px;
}

.steps li:last-child {
  margin-bottom: 0;
}

.footer {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 32px;
}

.footer a {
  color: var(--muted);
}

@media (min-width: 640px) {
  .wrap {
    padding-top: 48px;
  }
}