:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1a2a3a;
  --muted: #576778;
  --accent: #1a6dd2;
  --card-bg: #f8f9fb;
  --shadow: rgba(0, 0, 0, 0.06);
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1c2028;
    --text: #e4e8ee;
    --muted: #8d99a8;
    --accent: #5ba3ef;
    --card-bg: #232830;
    --shadow: rgba(0, 0, 0, 0.2);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
}

body {
  padding: 32px 16px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 32px;
  border-radius: 20px;
  background: var(--surface);
  box-shadow: 0 1px 3px var(--shadow);
}

.header-lockup {
  display: flex;
  align-items: center;
  gap: 20px;
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  overflow: hidden;
  background: #343434;
  box-shadow: 0 2px 8px var(--shadow);
  flex-shrink: 0;
}

.app-icon img {
  display: block;
  width: 100%;
  height: 100%;
}

header {
  margin-bottom: 32px;
}

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

header p {
  margin-top: 16px;
  color: var(--muted);
}

h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

section {
  margin-top: 28px;
}

.card {
  padding: 20px;
  border-radius: 14px;
  background: var(--card-bg);
}

.email {
  font-weight: 500;
}

.email-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
}

.email-link:hover {
  text-decoration: underline;
}

p {
  color: var(--muted);
}

footer {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--card-bg);
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}