/* Root palette */

:root {
  --ink: #1f2933;
  --muted: #4b5563;
  --accent: #2f5d8a;
  --accent-light: #e6eef6;
  --rule: #d1d5db;
  --bg: #ffffff;
}

/* Base */

body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
/* === Embedded panels (iframes) === */

iframe.embed {
  width: 100%;
  border: none;
  min-height: 900px;
}

iframe.embed.tall {
  min-height: 1200px;
}

/* Navigation */

.site-nav {
  text-align: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--accent);
  text-decoration: none;
  margin: 0 0.5rem;
}

.site-nav a.active {
  font-weight: 600;
  color: var(--ink);
}

.nav-sep {
  color: var(--muted);
}

/* Layout */

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* Hero */

.hero {
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 0.75rem;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

/* Sections */

section {
  margin-bottom: 3rem;
}

h2 {
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  font-size: 1.6rem;
  margin-bottom: 1rem;
  border-left: 4px solid var(--accent);
  padding-left: 0.75rem;
}

h3 {
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  font-size: 1.25rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
}

/* Lists */

ul, ol {
  margin-left: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
}

/* Structure boxes */

.structure-box {
  background: var(--accent-light);
  padding: 1.25rem;
  border: 1px solid var(--rule);
  margin: 1.5rem 0;
}

/* Links */

a {
  color: var(--accent);
}

a:hover {
  text-decoration: underline;
}

/* Closing */

.closing {
  border-top: 1px solid var(--rule);
  padding-top: 2rem;
  text-align: center;
}

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.button:hover {
  background: var(--accent-light);
}