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

:root {
  --navy: #0f2a44;
  --navy-light: #1a3d5c;
  --accent: #2d6a9f;
  --text: #2c3e50;
  --text-muted: #5a6c7d;
  --border: #d8e0e8;
  --bg: #f4f7fa;
  --white: #ffffff;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--navy);
  color: var(--white);
  padding: 1.25rem 1.5rem;
  border-bottom: 3px solid var(--accent);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
}

.logo {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.logo span {
  font-weight: 400;
  opacity: 0.85;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

.card {
  background: var(--white);
  max-width: 560px;
  width: 100%;
  padding: 3rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 24px rgba(15, 42, 68, 0.08);
  text-align: center;
}

.icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.5rem;
  color: var(--accent);
}

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.divider {
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto 1.75rem;
  border-radius: 2px;
}

.contact {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.contact a:hover {
  text-decoration: underline;
}

footer {
  background: var(--navy-light);
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .card {
    padding: 2rem 1.5rem;
  }

  h1 {
    font-size: 1.45rem;
  }
}