* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #f8fafc;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}
.narrow { width: min(800px, calc(100% - 2rem)); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(15, 23, 42, 0.95);
  color: #fff;
  backdrop-filter: blur(6px);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}
.brand {
  font-size: 1.25rem;
  font-weight: 700;
}
.nav nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.nav a { color: #e5e7eb; }
.nav a:hover { color: #fff; }

.hero {
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  color: #fff;
  padding: 5rem 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .85rem;
  opacity: .85;
}
h1, h2, h3 { line-height: 1.2; margin-top: 0; }
h1 { font-size: clamp(2rem, 4vw, 3.5rem); margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: .75rem; }
.lead {
  font-size: 1.1rem;
  max-width: 700px;
}
.actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.btn {
  display: inline-block;
  padding: .85rem 1.2rem;
  border-radius: .6rem;
  font-weight: 700;
}
.btn-primary {
  background: #2563eb;
  color: #fff;
}
.btn-primary:hover { background: #1d4ed8; }
.btn-secondary {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
}
.section {
  padding: 4rem 0;
}
.alt {
  background: #eaf1fb;
}
.section-intro {
  max-width: 720px;
  color: #4b5563;
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}
.card {
  background: #fff;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, .08);
}
.highlight {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  box-shadow: none;
}
.highlight ul {
  padding-left: 1.2rem;
  margin-bottom: 0;
}
.contact-form {
  background: #fff;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, .08);
}
label {
  display: block;
  margin-bottom: .4rem;
  font-weight: 700;
}
input, textarea {
  width: 100%;
  padding: .85rem 1rem;
  border: 1px solid #cbd5e1;
  border-radius: .6rem;
  margin-bottom: 1rem;
  font: inherit;
}
textarea {
  min-height: 180px;
  resize: vertical;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.alert {
  padding: 1rem;
  border-radius: .75rem;
  margin-bottom: 1rem;
}
.success {
  background: #dcfce7;
  color: #166534;
}
.error {
  background: #fee2e2;
  color: #991b1b;
}
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 1.5rem 0;
}
.footer-flex {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
@media (max-width: 800px) {
  .hero-grid, .cards, .grid-2 {
    grid-template-columns: 1fr;
  }
}