:root {
  --blue: #004c97;
  --orange: #ff8c00;
  --light: #f5f7fa;
  --dark: #111;
  --gray: #555;
  --max-width: 900px;
  --radius: 6px;
  --shadow: 0 2px 6px rgba(0,0,0,.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', system-ui, sans-serif; color: var(--dark); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 90%; max-width: var(--max-width); margin: auto; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 1rem 0; }
.logo { font-weight: 700; font-size: 1.2rem; color: var(--blue); }
nav ul { list-style: none; display: flex; gap: 1.5rem; }
nav a:hover { color: var(--orange); }

.hero { background: var(--blue) url('hero-bg.jpg') center/cover no-repeat; color: #fff; padding: 5rem 0 6rem; }
.hero-inner h1 { font-size: 2.2rem; margin-bottom: 1rem; }
.hero-inner p { font-size: 1.1rem; margin-bottom: 2rem; max-width: 500px; }

.btn { display: inline-block; background: var(--orange); color: #fff; padding: .75rem 1.5rem; border-radius: var(--radius); font-weight: 600; }
.btn.secondary { background: transparent; border: 2px solid var(--orange); color: var(--orange); }
.btn:hover { opacity: .9; }

.pillars { padding: 4rem 0; text-align: center; }
.pillars h2 { margin-bottom: 2.5rem; }
.grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
article { background: var(--light); padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow); }

.classes { background: var(--light); padding: 4rem 0; }
.card { background: #fff; padding: 2rem; border-radius: var(--radius); box-shadow: var(--shadow); max-width: 600px; margin: auto; }
.card ul { margin: 1rem 0 1.5rem 1.5rem; }
.price { font-size: 1.5rem; font-weight: 700; color: var(--blue); margin-bottom: 1rem; }

.safety { padding: 4rem 0; }
.safety ol { margin: 1.5rem 0 1rem 2rem; }
.safety li { margin-bottom: .5rem; font-weight: 600; }

.about { padding: 4rem 0; }

.contact { background: var(--light); padding: 4rem 0; }
form { display: grid; gap: 1rem; max-width: 500px; margin: auto; }
label { font-weight: 600; }
input, textarea { width: 100%; padding: .6rem; border: 1px solid #ccc; border-radius: var(--radius); font: inherit; }
button { justify-self: start; }
.small { text-align: center; margin-top: 1rem; color: var(--gray); font-size: .85rem; }

footer { text-align: center; padding: 2rem 0; font-size: .9rem; color: var(--gray); }

@media (max-width: 600px) {
  nav ul { flex-direction: column; gap: .5rem; }
  .hero-inner h1 { font-size: 1.8rem; }
}