:root {
  --blue: #0B4F9C;
  --orange: #FF7A00;
  --teal: #0E9F8A;
  --text: #17324D;
  --muted: #5D6B7A;
  --bg: #F5F8FB;
  --border: #D9E2EC;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.8px;
  text-decoration: none;
  color: var(--blue);
}
.brand span { color: var(--orange); }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 700;
}
main {
  max-width: 980px;
  margin: 34px auto;
  padding: 0 24px 40px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px;
  box-shadow: 0 8px 30px rgba(18, 52, 86, 0.06);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--teal);
  font-weight: 800;
  font-size: 13px;
}
h1 {
  color: var(--blue);
  line-height: 1.15;
  margin: 8px 0 12px;
  font-size: clamp(34px, 5vw, 52px);
}
h2 {
  color: var(--blue);
  margin-top: 34px;
  font-size: 25px;
}
h3 {
  color: var(--text);
  margin-top: 24px;
  font-size: 19px;
}
p, li { font-size: 16px; }
.lead {
  font-size: 19px;
  color: var(--muted);
}
.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--orange);
  background: #FFF7ED;
  border-radius: 8px;
}
.meta {
  color: var(--muted);
  font-size: 14px;
}
a { color: var(--blue); }
footer {
  max-width: 980px;
  margin: 0 auto 40px;
  padding: 0 24px;
  color: var(--muted);
  font-size: 14px;
}
.footer-box {
  border-top: 1px solid var(--border);
  padding-top: 22px;
}
.footer-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.footer-links a { font-weight: 700; text-decoration: none; }
.button {
  display: inline-block;
  background: var(--orange);
  color: #111;
  font-weight: 800;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 10px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
  margin: 24px 0;
}
.mini {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  background: #FAFCFE;
}
code {
  background: #EFF4F8;
  border-radius: 5px;
  padding: 2px 6px;
}
@media (max-width: 720px) {
  .header-inner { align-items: flex-start; flex-direction: column; }
  nav { gap: 12px; }
  .card { padding: 24px 20px; }
  .grid { grid-template-columns: 1fr; }
}