:root {
  --navy: #1E3D59;
  --navy-dark: #14293E;
  --teal: #5FBAC9;
  --teal-light: #CFEBEF;
  --bg-light: #EAF6F8;
  --text: #22333F;
  --text-muted: #5A6B77;
  --border: #E1EDEF;
  --warn-bg: #FFF6E5;
  --warn-border: #F0C36D;
}

* { box-sizing: border-box; }

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

header {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 900px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.logo {
  color: #FFFFFF;
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
}

.navlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.navlinks a {
  color: rgba(255,255,255,0.82);
  text-decoration: none;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 6px;
}

.navlinks a:hover {
  background: rgba(255,255,255,0.12);
  color: #FFFFFF;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.hero {
  padding: 40px 0 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 28px;
  color: var(--navy-dark);
}

.updated {
  color: var(--text-muted);
  font-size: 13px;
}

h2 {
  font-size: 18px;
  color: var(--navy-dark);
  margin: 30px 0 10px;
}

p, li {
  font-size: 15px;
  color: var(--text);
}

ul {
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

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

.notice {
  background: var(--bg-light);
  border: 1px solid var(--teal-light);
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 18px 0;
  font-size: 14px;
  color: var(--navy-dark);
}

.warning {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-left: 4px solid #D99A2B;
  border-radius: 8px;
  padding: 14px 16px;
  margin: 18px 0;
  font-size: 14px;
}

.card {
  background: var(--bg-light);
  border: 1px solid var(--teal-light);
  border-radius: 12px;
  padding: 18px 22px;
}

.card ul {
  margin: 0;
}

.card li {
  margin-bottom: 10px;
}

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 30px 20px 50px;
  color: var(--text-muted);
  font-size: 12.5px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

@media (max-width: 600px) {
  .nav { flex-direction: column; align-items: flex-start; }
  .hero h1 { font-size: 24px; }
}