/* Reset / base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: #222;
  background-color: #f9f9f9;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Layout container */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 0;
}

/* Header */
header {
  background: white;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-list {
  list-style: none;
  display: flex;
  gap: 1rem;
}
.nav-list a {
  color: #0066cc;
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  transition: color 0.2s;
}
.nav-list a:hover {
  color: #004999;
}

/* Hero / Intro section */
.hero {
  background: white;
  padding: 4rem 0;
  text-align: center;
}
.hero h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}
.hero p {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  margin-bottom: 1.5rem;
}
.btn {
  display: inline-block;
  padding: 0.75em 1.5em;
  background: #0066cc;
  color: white;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.2s ease;
}
.btn:hover {
  background: #0055a3;
}

/* Grid & cards for features */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}
.card {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card h3 {
  margin-bottom: 0.75rem;
  color: #111;
}
.card p {
  font-size: clamp(1rem, 2.5vw, 1.0625rem);
  color: #444;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* Footer */
footer {
  background: white;
  padding: 2rem 0;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
}
footer p {
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}