:root {
  --bg-1: #0a3554;
  --bg-2: #0b78b8;
  --text: #16324a;
  --muted: #5f7487;
  --panel: #ffffff;
  --border: rgba(18, 50, 74, 0.12);
  --brand: #009edb;
  --brand-dark: #0077ab;
  --shadow: 0 14px 40px rgba(10, 53, 84, 0.14);
  --footer-bg: #0d2234;
  --footer-text: #d6e6f2;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.16), transparent 28%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
}

a {
  color: var(--brand);
  text-decoration: none;
}

.page-wrap {
  min-height: 100vh;
}

.container {
  width: min(1100px, calc(100% - 28px));
  margin: 0 auto;
}

.site-header {
  padding: 18px 0;
  color: #fff;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.brand {
  color: #fff;
  font-size: 1.4rem;
  font-weight: 800;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav a {
  color: rgba(255,255,255,0.92);
  font-weight: 600;
}

.page-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 28px;
  margin: 18px auto;
  line-height: 1.75;
}

.page-card h1 {
  margin-top: 0;
  font-size: 2rem;
}

.page-card h2 {
  margin-top: 28px;
  margin-bottom: 8px;
}

.page-card ul {
  padding-left: 20px;
}

.site-footer {
  margin: 18px auto 0;
  width: min(1100px, calc(100% - 28px));
  background: var(--footer-bg);
  color: var(--footer-text);
  border-radius: 22px 22px 0 0;
  padding: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}

.site-footer h3,
.site-footer h4 {
  margin-top: 0;
  color: #fff;
}

.site-footer p,
.site-footer li {
  color: var(--footer-text);
  line-height: 1.7;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer a {
  color: #8dd9ff;
}

.footer-bottom {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

@media (max-width: 760px) {
  .site-header .container,
  .footer-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .nav {
    gap: 10px;
  }

  .page-card {
    padding: 22px;
  }

  .page-card h1 {
    font-size: 1.65rem;
  }
}