:root {
  --brand: #3B82F6;
  --bg: #0F1115;
  --bg-card: #171A1F;
  --text: #F5F5F5;
  --text-muted: #A7A7A7;
  --border: #262A30;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

header .brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 48px 20px;
}

.card {
  width: 100%;
  max-width: 560px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 8px;
}

p.lead {
  color: var(--text-muted);
  margin: 0 0 24px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-links a {
  display: block;
  padding: 14px 18px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  text-align: center;
}

.contact-links a.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

footer {
  padding: 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}