:root {
  --stiah-navy: #1b1d36;
  --stiah-green: #009748;
  --stiah-white: #f3f2f3;
  --stiah-mist: #ebeaeb;
  --stiah-ink: #172033;
  --stiah-line: #d8d9dd;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--stiah-ink);
  background: #fff;
  font-family: Lexend, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a { color: #075e34; text-underline-offset: 0.16em; }
a:hover, a:focus { color: var(--stiah-navy); }

.masthead {
  color: #fff;
  background: var(--stiah-navy);
  border-bottom: 5px solid var(--stiah-green);
}

.bar, main, .footer-inner { width: min(100% - 40px, 960px); margin: 0 auto; }

.bar {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.08em;
}

.nav { display: flex; gap: 18px; flex-wrap: wrap; }
.nav a { color: #fff; font-size: 0.9rem; }

.hero {
  padding: 72px 0 66px;
  color: #fff;
  background: linear-gradient(135deg, var(--stiah-navy) 0%, #20325c 100%);
}

.hero .inside { width: min(100% - 40px, 960px); margin: 0 auto; max-width: 960px; }
.eyebrow { margin: 0 0 10px; color: #a6e5be; font-size: 0.84rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
h1, h2, h3 { color: var(--stiah-navy); line-height: 1.18; }
.hero h1 { max-width: 760px; margin: 0; color: #fff; font-size: clamp(2.15rem, 5vw, 4.4rem); letter-spacing: -0.04em; }
.hero p:last-child { max-width: 720px; margin: 22px 0 0; font-size: 1.1rem; }

main { padding: 52px 0 70px; }
h2 { margin: 46px 0 14px; font-size: 1.55rem; }
h2:first-child { margin-top: 0; }
h3 { margin: 28px 0 8px; font-size: 1.1rem; }
p, li { max-width: 820px; }

.lead { font-size: 1.14rem; }
.notice { margin: 28px 0; padding: 18px 20px; border-left: 5px solid var(--stiah-green); background: #eff8f2; }
.warning { border-left-color: #9f5f00; background: #fff8e9; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 26px 0; }
.card { padding: 22px; border: 1px solid var(--stiah-line); background: #fff; }
.card h2 { margin: 0 0 8px; font-size: 1.15rem; }

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.95rem; }
th, td { padding: 13px; text-align: left; vertical-align: top; border: 1px solid var(--stiah-line); }
th { color: #fff; background: var(--stiah-navy); }
tbody tr:nth-child(even) { background: #fafafa; }

.meta { color: #5e6470; font-size: 0.88rem; }
footer { padding: 28px 0; color: #fff; background: var(--stiah-navy); }
footer p { margin: 0; font-size: 0.88rem; }
footer a { color: #fff; }

@media (max-width: 640px) {
  .bar { padding: 18px 0; align-items: flex-start; flex-direction: column; }
  .card-grid { grid-template-columns: 1fr; }
  th, td { padding: 10px; }
  table { font-size: 0.86rem; }
}