:root {
  --navy: #071624;
  --ink: #15202b;
  --muted: #627386;
  --line: #dce4ec;
  --soft: #f5f8fb;
  --panel: #ffffff;
  --accent: #2454ff;
  --accent-dark: #1637a8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #ffffff;
  line-height: 1.55;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header {
  background: var(--navy);
  color: white;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: white;
}
nav a {
  color: #dbe7f5;
  margin-left: 18px;
  font-size: 14px;
}
.hero {
  background: linear-gradient(135deg, #071624 0%, #0b2238 65%, #102d4d 100%);
  color: white;
  padding: 76px 24px;
}
.hero-inner, main, footer .inner {
  max-width: 1180px;
  margin: 0 auto;
}
.eyebrow {
  color: #9db7ff;
  font-weight: 700;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.08em;
}
h1 {
  font-size: 50px;
  line-height: 1.05;
  margin: 16px 0 20px;
  max-width: 900px;
}
h2 {
  font-size: 30px;
  margin-top: 42px;
  margin-bottom: 14px;
}
h3 { font-size: 21px; margin-top: 28px; }
p.lead {
  font-size: 21px;
  color: #d7e4f1;
  max-width: 850px;
}
.cta-row { margin-top: 30px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 13px 18px;
  border-radius: 8px;
  font-weight: 700;
  border: 1px solid transparent;
}
.btn-primary { background: white; color: var(--navy); }
.btn-secondary { border-color: #8ea7c0; color: white; }
main { padding: 42px 24px 80px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(5, 22, 39, 0.03);
}
.flow {
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0 28px;
}
th, td {
  border: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
}
th { background: var(--soft); }
.notice {
  background: #fff8e6;
  border: 1px solid #f2d58c;
  border-radius: 12px;
  padding: 18px;
}
.code {
  background: #0b1520;
  color: #d7e4f1;
  border-radius: 12px;
  padding: 18px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.form {
  max-width: 780px;
  background: var(--soft);
  border: 1px solid var(--line);
  padding: 22px;
  border-radius: 14px;
}
label { font-weight: 700; display: block; margin-top: 14px; }
input, select, textarea {
  width: 100%;
  padding: 11px;
  border: 1px solid #bac6d2;
  border-radius: 8px;
  margin-top: 6px;
  font-size: 16px;
}
footer {
  background: var(--navy);
  color: #b7c6d7;
  padding: 30px 24px;
}
.small { color: var(--muted); font-size: 14px; }
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
  h1 { font-size: 38px; }
  nav { display: none; }
}