:root {
  --bg: #f3f7ff;
  --surface: #ffffff;
  --text: #0d1b2a;
  --muted: #4b5563;
  --primary: #0b5ed7;
  --primary-dark: #094fb4;
  --line: #d8e2f3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Manrope, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 400px at 10% -15%, #cfe1ff 0%, transparent 60%),
    linear-gradient(180deg, #f9fbff 0%, var(--bg) 100%);
}

a {
  color: inherit;
}

.container {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid #e5edf9;
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1rem;
}

nav a {
  text-decoration: none;
  color: #213047;
}

.hero {
  padding: 5rem 0 2rem;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 0.8rem;
  color: #17458f;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.05;
}

.lead {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
}

.hero-actions {
  margin-top: 1.4rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  padding: 0.7rem 1rem;
  text-decoration: none;
  font-weight: 700;
}

.btn:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: #e7f0ff;
  color: #17458f;
}

section {
  padding: 2rem 0;
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1rem;
}

.card h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
}

.card p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.doc {
  padding: 2.5rem 0 3rem;
}

.doc-card {
  max-width: 900px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.5rem;
}

.doc-card h1 {
  font-size: 2rem;
}

.doc-card h2 {
  margin: 1.2rem 0 0.5rem;
  font-size: 1.2rem;
}

.doc-card p,
.doc-card li {
  color: #334155;
  line-height: 1.65;
}

.meta {
  color: #64748b;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid #e5edf9;
}

.footer {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #3c4b66;
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  nav {
    gap: 0.7rem;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .footer {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding: 0.8rem 0;
  }
}