:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --text: #162022;
  --muted: #5d6a6d;
  --line: #dfe7e9;
  --accent: #39e77a;
  --panel: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.shell {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 28px;
  align-items: center;
  min-height: 56vh;
}

.app-icon {
  width: 132px;
  height: 132px;
  border-radius: 30px;
  box-shadow: 0 20px 50px rgba(11, 41, 37, 0.18);
}

.eyebrow,
.updated {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 10px;
  font-size: 24px;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 6px;
  font-size: 18px;
  letter-spacing: 0;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 17px;
}

.lead {
  max-width: 620px;
  margin-top: 18px;
  font-size: 20px;
}

.links {
  display: flex;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.links a,
.back {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 0 16px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.page {
  margin-top: 34px;
  border-top: 4px solid var(--accent);
  background: var(--panel);
  padding: 42px;
}

@media (max-width: 680px) {
  .shell {
    width: min(100% - 28px, 920px);
    padding: 32px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 20px;
    min-height: 48vh;
  }

  .app-icon {
    width: 104px;
    height: 104px;
    border-radius: 24px;
  }

  h1 {
    font-size: 36px;
  }

  .lead {
    font-size: 18px;
  }

  .links {
    flex-direction: column;
  }

  .page {
    padding: 28px;
  }
}