:root {
  --navy: #0b1f33;
  --navy-2: #08182a;
  --blue: #1c6ea4;
  --blue-2: #2487c7;
  --ink: #1d2b39;
  --muted: #5b6b7a;
  --line: #e3e8ee;
  --bg: #f6f8fb;
  --max: 1040px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--navy);
  color: #fff; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* Header / nav */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  background: var(--navy); color: #fff;
  padding: 12px 24px;
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; font-weight: 700; font-size: 18px; }
.brand img { border-radius: 6px; background: #fff; }
.site-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.site-nav a {
  color: #d8e3ef; text-decoration: none; padding: 8px 14px; border-radius: 6px;
  font-size: 15px; transition: background .15s, color .15s;
}
.site-nav a:hover { background: rgba(255,255,255,.1); color: #fff; }
.site-nav a.active { background: var(--blue); color: #fff; }
.nav-toggle { display: none; background: none; border: 0; color: #fff; font-size: 24px; cursor: pointer; line-height: 1; }

/* Content */
.content { max-width: var(--max); margin: 0 auto; padding: 40px 24px 64px; }
.page-title { font-size: 34px; line-height: 1.2; margin: 0 0 24px; color: var(--navy); }
.content h2 { font-size: 26px; margin: 36px 0 12px; color: var(--navy); }
.content h3 { font-size: 21px; margin: 28px 0 10px; color: var(--navy); }
.content h4, .content h5 { font-size: 18px; margin: 22px 0 8px; color: var(--ink); }
.content p { margin: 0 0 16px; }
.content a { color: var(--blue); }
.content a:hover { color: var(--blue-2); }
.content img { max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 4px 18px rgba(0,0,0,.1); margin: 12px 0; }
.content ul, .content ol { padding-left: 22px; margin: 0 0 16px; }
.content li { margin: 4px 0; }

/* Buttons */
.btn {
  display: inline-block; background: var(--blue); color: #fff !important;
  text-decoration: none; padding: 11px 18px; border-radius: 7px; font-size: 15px;
  transition: background .15s, transform .05s;
}
.btn:hover { background: var(--blue-2); }
.btn:active { transform: translateY(1px); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0; }

/* Cards */
.cards { display: flex; flex-wrap: wrap; gap: 20px; margin: 28px 0; }
.card {
  flex: 1 1 280px; max-width: 340px; background: var(--navy); color: #fff;
  border-radius: 12px; padding: 24px; display: flex; flex-direction: column;
  box-shadow: 0 8px 22px rgba(11,31,51,.18);
}
.card h3 { margin: 0 0 10px; color: #fff; font-size: 20px; }
.card p { color: #cfe0f0; font-size: 14.5px; flex: 1; margin: 0 0 18px; }
.card .btn { align-self: flex-start; }

/* Footer */
.site-footer { background: var(--navy-2); color: #9fb3c8; text-align: center; padding: 26px 24px; font-size: 14px; }
.site-footer p { margin: 0; }

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; width: 100%; flex-direction: column; gap: 2px; }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 14px; }
}

/* Visible keyboard focus (a11y) */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible {
  outline: 3px solid var(--blue-2);
  outline-offset: 2px;
  border-radius: 4px;
}
.site-header a:focus-visible,
.site-nav a:focus-visible,
.brand:focus-visible,
.nav-toggle:focus-visible { outline-color: #fff; }

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}