:root {
  --navy: #0f2544;
  --navy-light: #1c3a63;
  --white: #ffffff;
  --gray-bg: #f4f6f9;
  --gray-text: #4b5563;
  --border: #e3e7ee;
  --amber: #c8942c;
  --amber-dark: #a87a20;
  --max-width: 1120px;
  --radius: 6px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--navy);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
}

h1, h2, h3 {
  font-family: "Source Serif 4", Georgia, "Times New Roman", serif;
  color: var(--navy);
  line-height: 1.25;
  font-weight: 600;
}

h1 { font-size: 2.25rem; margin: 0 0 1rem; }
h2 { font-size: 1.5rem; margin: 2.25rem 0 0.85rem; }
h3 { font-size: 1.15rem; margin: 1.5rem 0 0.6rem; }

p { margin: 0 0 1rem; color: var(--gray-text); }

a { color: var(--navy-light); text-decoration: underline; text-decoration-color: var(--border); text-underline-offset: 2px; }
a:hover { color: var(--amber-dark); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
header.site-header {
  background: var(--navy);
  border-bottom: 1px solid var(--navy-light);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  color: var(--white);
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}
.brand span { color: var(--amber); }

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

nav.main-nav a {
  color: #dbe3ef;
  text-decoration: none;
  font-size: 0.95rem;
}
nav.main-nav a:hover { color: var(--amber); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.nav-toggle svg { stroke: var(--white); }

@media (max-width: 720px) {
  nav.main-nav {
    display: none;
    width: 100%;
  }
  nav.main-nav.open { display: block; }
  nav.main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 1rem;
  }
  nav.main-nav a {
    display: block;
    padding: 0.6rem 0;
    border-top: 1px solid var(--navy-light);
  }
  .nav-row { flex-wrap: wrap; }
  .nav-toggle { display: block; }
}

/* Hero */
.hero {
  background: var(--gray-bg);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 0;
}
.hero .container { max-width: 780px; }
.hero p.lead {
  font-size: 1.15rem;
  color: var(--navy-light);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 2rem 0;
}
@media (max-width: 820px) {
  .card-grid { grid-template-columns: 1fr; }
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--white);
  transition: border-color 0.15s ease;
}
.card:hover { border-color: var(--amber); }
.card h3 { margin-top: 0; }
.card a.card-link {
  text-decoration: none;
  color: inherit;
}
.card p.excerpt { font-size: 0.95rem; margin-bottom: 0; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--amber);
  color: var(--navy);
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  text-decoration: none;
  border: none;
}
.btn:hover { background: var(--amber-dark); color: var(--white); }

/* Article layout */
main.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}
.article-meta {
  font-size: 0.9rem;
  color: var(--gray-text);
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.25rem;
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
table.compare th, table.compare td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
}
table.compare th { background: var(--gray-bg); }

section.plain { max-width: 760px; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }

/* Footer */
footer.site-footer {
  background: var(--navy);
  color: #c7d1e0;
  margin-top: 3rem;
}
footer.site-footer .container {
  padding: 2.25rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}
footer.site-footer a { color: #c7d1e0; text-decoration: none; font-size: 0.9rem; }
footer.site-footer a:hover { color: var(--amber); }
footer.site-footer .foot-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
footer.site-footer small { color: #8b98ad; }