:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3fb;
  --text: #18222f;
  --muted: #536375;
  --brand: #164a92;
  --brand-dark: #0f3569;
  --border: #d5dfeb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.hero {
  background: linear-gradient(140deg, #0f3569, #1d5daf);
  color: #f8fbff;
  padding: 90px 0 80px;
}

.overline {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  opacity: 0.9;
  margin: 0 0 12px;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
}

.lead {
  max-width: 860px;
  margin: 22px 0 30px;
  font-size: 1.05rem;
}

.btn {
  display: inline-block;
  background: #ffffff;
  color: var(--brand-dark);
  text-decoration: none;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 7px 18px rgba(12, 35, 68, 0.26);
}

.block {
  padding: 52px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  color: #000;
}

.block.alt {
  background: var(--surface-alt);
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.2;
}

p {
  margin: 0 0 14px;
}

.contacts {
  margin: 18px 0 0;
  padding-left: 18px;
}

.contacts li {
  margin-bottom: 9px;
}

a {
  color: var(--brand);
}

.back-link {
  display: inline-block;
  margin-top: 14px;
  font-weight: 600;
}

.footer {
  padding: 26px 0 32px;
  background: #102742;
  color: #d7e2f2;
}

.footer p {
  margin: 0;
  font-size: 0.92rem;
}

@media (max-width: 740px) {
  .hero {
    padding: 72px 0 62px;
  }

  .block {
    padding: 42px 0;
  }
}