:root {
  --bg: #0b3a53;
  --card: #135b7a;
  --accent: #38bdf8;
  --text: #e6f6ff;
  --muted: #b9e3f7;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: linear-gradient(180deg, #06283d, var(--bg));
  color: var(--text);
}
header {
  background: rgba(6,40,61,0.95);
  padding: 20px 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.container { max-width: 1100px; margin: 0 auto; }
.header-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
}
nav a {
  color: var(--text);
  text-decoration: none;
  margin-right: 12px;
  font-weight: 500;
}
nav a:hover { color: var(--accent); }
.hero { padding: 64px 16px; text-align: center; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 18px; }
.buttons a {
  display: inline-block;
  margin: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #06283d;
  font-weight: 700;
  text-decoration: none;
}
section { padding: 48px 16px; }
h2 { font-size: 28px; margin-bottom: 24px; }
.card {
  background: var(--card);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 20px;
}
footer {
  background: #06283d;
  padding: 32px 16px;
  font-size: 14px;
  color: var(--muted);
}