:root {
  --primary: #0b4da2;
  --secondary: #f8faff;
  --text-dark: #1a1a1a;
  --footer-bg: linear-gradient(180deg, #0b4da2, #062c67);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', Arial, sans-serif; color: var(--text-dark); background: #fff; line-height: 1.6; }
img { max-width: 100%; border-radius: 10px; }
a { text-decoration: none; color: var(--primary); }
header {
  background: #fff;
  border-bottom: 3px solid var(--primary);
  padding: 16px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
header h1 { color: var(--primary); font-size: clamp(1.2rem, 2vw, 1.8rem); font-weight: 700; }
nav a { color: var(--primary); margin: 0 12px; font-weight: 600; transition: color 0.3s; }
nav a:hover { color: #063477; }
.menu-toggle { display: none; flex-direction: column; cursor: pointer; }
.menu-toggle span { background: var(--primary); height: 3px; width: 25px; margin: 4px 0; transition: 0.3s; }
nav.active { display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; width: 100%; background: #fff; border-top: 2px solid var(--primary); }
nav.active a { margin: 15px 0; padding: 10px; text-align: center; }

.hero {
  background: url('https://images.unsplash.com/photo-1525182008055-f88b95ff7980?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
  color: #fff;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}
.hero h2 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: 20px; text-shadow: 2px 2px 6px rgba(0,0,0,0.5); }
.hero p { font-size: clamp(1rem, 2vw, 1.3rem); margin-bottom: 30px; text-shadow: 1px 1px 4px rgba(0,0,0,0.4); }
.hero a {
  background: var(--primary);
  color: #fff;
  padding: 14px 34px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
  transition: background 0.3s;
}
.hero a:hover { background: #063477; }

.container { max-width: 1200px; margin: 0 auto; padding: 60px 20px; }
h2 { color: var(--primary); text-align: center; margin-bottom: 30px; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card { background: var(--secondary); border: 1px solid #dce7f7; border-radius: 12px; padding: 24px; box-shadow: 0 3px 8px rgba(0,0,0,0.05); text-align: center; }
.card h3 { color: var(--primary); margin-bottom: 10px; }
.card p { color: #333; }

footer {
  background: var(--footer-bg);
  color: #fff;
  padding: 50px 20px;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; text-align: left; }
footer h3 { font-size: 1.2rem; margin-bottom: 10px; }
footer a { color: #fff; text-decoration: underline; }
footer p { margin: 8px 0; }
footer .bottom { text-align: center; margin-top: 30px; font-size: 14px; }

@media (max-width: 768px) {
  .menu-toggle { display: flex; }
  nav { display: none; }
}