:root {
  --navy: #0e2a47;
  --blue: #1d5f88;
  --sand: #f4efe7;
  --light: #f7fafc;
  --text: #253242;
  --muted: #6b7280;
  --white: #ffffff;
  --border: #e5e7eb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--white);
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { width: min(1120px, 92%); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-weight: 700;
  color: var(--navy);
  text-decoration: none;
  font-size: 1.1rem;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a { text-decoration: none; font-weight: 600; color: var(--text); }
.nav-links a:hover { color: var(--blue); }
.menu-toggle { display: none; background: none; border: 0; font-size: 1.8rem; }

.hero {
  padding: 90px 0;
  background: linear-gradient(135deg, #f8fbff 0%, #eef7fb 55%, #f7efe6 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.hero h1 { font-size: clamp(2.2rem, 5vw, 4rem); line-height: 1.1; color: var(--navy); margin: 12px 0 20px; }
.lead { font-size: 1.15rem; color: #405062; max-width: 620px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; color: var(--blue); font-weight: 700; font-size: .82rem; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn { padding: 13px 22px; border-radius: 999px; text-decoration: none; font-weight: 700; }
.btn.primary { background: var(--navy); color: var(--white); }
.btn.secondary { border: 1px solid var(--navy); color: var(--navy); background: var(--white); }
.hero-image img { border-radius: 24px; box-shadow: 0 24px 60px rgba(14, 42, 71, .2); }

.section { padding: 82px 0; }
.light { background: var(--light); }
.two-column { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: start; }
h2 { color: var(--navy); font-size: clamp(1.8rem, 3vw, 2.7rem); line-height: 1.2; margin: 8px 0 24px; }
h3 { color: var(--navy); margin-bottom: 8px; }
.content-card, .contact-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 30px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, .06);
}

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 30px; }
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  min-height: 210px;
}
.stats { background: var(--navy); color: var(--white); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stats strong { display: block; font-size: 2.2rem; margin-bottom: 6px; }
.stats span { color: #dbeafe; }
.advantages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  list-style: none;
  padding: 0;
  margin-top: 30px;
}
.advantages li {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  font-weight: 700;
}
.video-placeholder {
  border: 2px dashed #b6c7d8;
  border-radius: 24px;
  padding: 70px 24px;
  text-align: center;
  background: #f8fbff;
}
.contact-section { background: var(--sand); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; align-items: start; }
.contact-card a { color: var(--blue); font-weight: 700; }
.footer { background: #071a2d; color: #dbeafe; padding: 28px 0; text-align: center; }

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
  }
  .nav-links.open { display: flex; }
  .hero-grid, .two-column, .contact-grid, .stats-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .advantages { grid-template-columns: 1fr; }
  .hero { padding: 60px 0; }
}

@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}