:root {
  --primary: #0A4D68;
  --secondary: #05BFDB;
  --accent: #F2BE22;
  --bg: #F8FAFC;
  --text: #1E293B;
  --muted: #64748B;
  --card-bg: #ffffff;
  --border: #E2E8F0;
  --radius: 12px;
  --shadow: 0 8px 20px rgba(0,0,0,0.06);
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* NAVIGATION */
.navbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: white;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: white;
  font-weight: 500;
  opacity: 0.9;
}

.nav-links a:hover {
  opacity: 1;
  text-decoration: underline;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 4rem 1.5rem 5rem;
  text-align: center;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
}

.hero-inner h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.accent {
  color: var(--accent);
}

.hero-inner p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

/* BUTTONS */
.btn-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn {
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-size: 1rem;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #1E293B;
  font-weight: 600;
}

.btn-secondary {
  background: transparent;
  border: 2px solid white;
  color: white;
}

/* MAIN */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

h2 {
  font-size: 2rem;
  color: var(--primary);
}

.section-sub {
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 2rem;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card h3 {
  margin-bottom: 0.5rem;
  color: var(--primary);
}

/* FOOTER */
footer {
  text-align: center;
  padding: 1.5rem;
  background