:root {
  --white: #ffffff;
  --black: #111111;
  --navy: #0b2545;
  --navy-soft: #13315c;
  --muted: #5a6675;
  --line: #e4e8ee;
  --bg-tint: #f6f8fb;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.65;
  font-size: 18px;
}

a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}
.site-header__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 24px 20px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.brand__name {
  font-size: 26px;
  letter-spacing: 0.5px;
  color: var(--navy);
  font-weight: 700;
  margin: 0;
}
.brand__tag {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
}
.nav {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
}
.nav a {
  padding: 6px 12px;
  border-radius: 4px;
  color: var(--black);
}
.nav a:hover { background: var(--bg-tint); text-decoration: none; }
.nav a.active {
  background: var(--navy);
  color: var(--white);
}

/* Main */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 64px;
}
h1 { color: var(--navy); font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { color: var(--navy); font-size: 24px; margin: 40px 0 10px; }
h3 { font-size: 20px; margin: 28px 0 8px; }
p { margin: 0 0 18px; }
.lead { font-size: 20px; color: var(--muted); margin-bottom: 32px; }

hr { border: none; border-top: 1px solid var(--line); margin: 36px 0; }

/* Post list */
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list li { padding: 22px 0; border-bottom: 1px solid var(--line); }
.post-list h2 { margin: 0 0 4px; font-size: 22px; }
.post-list h2 a { color: var(--navy); }
.post-meta {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 6px;
}
.post-excerpt { color: var(--black); margin: 6px 0 0; }

/* Article */
.article-meta {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 28px;
}
blockquote {
  margin: 24px 0;
  padding: 4px 20px;
  border-left: 3px solid var(--navy);
  background: var(--bg-tint);
  color: var(--navy-soft);
}
blockquote p:last-child { margin-bottom: 0; }
.source-link {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
}

.back-link {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
  display: inline-block;
  margin-bottom: 24px;
}

/* Buttons */
.btn {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  padding: 12px 24px;
  border-radius: 4px;
}
.btn:hover { background: var(--navy-soft); text-decoration: none; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 40px;
}
.site-footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 520px) {
  body { font-size: 17px; }
  h1 { font-size: 27px; }
}