body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background: linear-gradient(135deg, #f6f8fa 0%, #e3e8ee 100%);
  color: #2d3748;
}

header {
  background: rgba(227, 232, 238, 0.85);
  color: #2d3748;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
  border-bottom: none;
  border-radius: 0 0 32px 32px;
  box-shadow: 0 4px 24px rgba(100,116,139,0.08);
  backdrop-filter: blur(8px);
}

nav {
  background: rgba(241, 245, 249, 0.85);
  display: flex;
  justify-content: center;
  padding: 0.75rem 0;
  border-bottom: none;
  gap: 1.5rem;
  border-radius: 0 0 24px 24px;
  box-shadow: 0 2px 12px rgba(100,116,139,0.06);
  margin: 0 2rem;
  position: relative;
  top: -16px;
  backdrop-filter: blur(6px);
}

nav a {
  color: #64748b;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  border-radius: 18px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  background: rgba(255,255,255,0.7);
  box-shadow: 0 2px 8px rgba(100,116,139,0.04);
}

nav a:hover {
  background: rgba(226,232,240,0.9);
  color: #2563eb;
  box-shadow: 0 4px 16px rgba(37,99,235,0.08);
}

main {
  max-width: 700px;
  margin: 2.5rem auto;
  background: rgba(255,255,255,0.85);
  padding: 2.5rem;
  box-shadow: 0 8px 32px rgba(100,116,139,0.12);
  border-radius: 32px;
  backdrop-filter: blur(12px);
}

h1, h2 {
  margin-top: 0;
  font-weight: 700;
}

h1 {
  color: #495879;
  letter-spacing: 1px;
  font-size: 2.5rem;
  text-shadow: 0 2px 12px rgba(100,116,139,0.08);
}

h2 {
  color: #475569;
  font-size: 1.5rem;
}

p {
  line-height: 1.7;
  color: #334155;
  font-size: 1.1rem;
  border-radius: 16px;
  padding: 0.5rem 1rem;
  background: rgba(241,245,249,0.5);
  box-shadow: 0 1px 4px rgba(100,116,139,0.04);
  margin-bottom: 1rem;
}