:root {
  /* Color palette */
  --bg: #f7f7f9;
  --text: #1f2329;
  --accent: #2563eb;
  --muted: #6b7280;
}

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

body {
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    'Helvetica Neue',
    Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.container {
  max-width: 640px;
  width: 100%;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.04);
}

header {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.subheading {
  font-size: 1rem;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.contact {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid #e5e7eb;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.email-link {
  font-size: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

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

footer {
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 480px) {
  .container {
    padding: 1.75rem 1.25rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}