@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

/* ============ TOKENS ============ */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f5f7;
  --color-bg-alt-2: #eceef1;
  --color-graphite: #262a2f;
  --color-graphite-soft: #4b5056;
  --color-graphite-mute: #6c7278;
  --color-border: #dfe2e6;
  --color-accent: #2454c7;
  --color-accent-dark: #173a94;
  --color-accent-soft: #eaf0fd;
  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, Arial, sans-serif;
  --radius: 4px;
  --max-width: 1180px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-graphite);
  background: var(--color-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--color-graphite);
  line-height: 1.25;
  font-weight: 600;
}

h1 { font-size: 2.6rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.6rem; }
h4 { font-size: 1.1rem; margin-bottom: 0.4rem; }

p { margin-bottom: 1rem; color: var(--color-graphite-soft); }

.section { padding: 72px 0; }
.section-alt { background: var(--color-bg-alt); }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 0.9rem;
  display: block;
}

.lede {
  font-size: 1.15rem;
  color: var(--color-graphite-soft);
  max-width: 720px;
}

.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: 3rem 0;
}

/* ============ BUTTONS / LINKS ============ */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border: 1px solid var(--color-graphite);
  color: var(--color-graphite);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn:hover { background: var(--color-graphite); color: #fff; }

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: #fff; }

.text-link {
  color: var(--color-accent);
  font-weight: 600;
  border-bottom: 1px solid transparent;
}
.text-link:hover { border-bottom-color: var(--color-accent); }

/* ============ HEADER / NAV ============ */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 500;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-graphite);
  letter-spacing: 0.02em;
}
.logo span { color: var(--color-accent); }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav ul { display: flex; list-style: none; align-items: center; gap: 2px; }
.main-nav > ul > li { position: relative; }
.main-nav a.nav-link {
  display: block;
  padding: 10px 16px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--color-graphite-soft);
  border-radius: var(--radius);
}
.main-nav a.nav-link:hover { color: var(--color-accent); background: var(--color-accent-soft); }

.has-dropdown > .nav-link::after {
  content: '▾';
  font-size: 0.7em;
  margin-left: 5px;
}
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  min-width: 240px;
  padding: 8px;
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(38,42,47,0.09);
  display: none;
  flex-direction: column;
  z-index: 50;
}
.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown { display: flex; }
.dropdown a {
  padding: 10px 12px;
  font-size: 0.92rem;
  color: var(--color-graphite-soft);
  border-radius: var(--radius);
}
.dropdown a:hover { background: var(--color-bg-alt); color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: none;
  padding: 8px 10px;
  border-radius: var(--radius);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-graphite);
  margin: 4px 0;
}

/* ============ HERO ============ */
.hero {
  padding: 80px 0 72px;
  background: var(--color-bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { margin-bottom: 1.2rem; }
.hero .lede { margin-bottom: 1.8rem; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image img {
  width: 100%;
  border-radius: var(--radius);
}
.page-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}
.page-hero h1 { margin-bottom: 0.8rem; }
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-graphite-mute);
  margin-bottom: 1.2rem;
}
.breadcrumb a { color: var(--color-graphite-mute); }
.breadcrumb a:hover { color: var(--color-accent); }

/* ============ GRIDS / CARDS ============ */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--color-bg);
}
.card h3 { margin-top: 0.4rem; }
.card-meta {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
}

.article-card { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; background: #fff; }
.article-card img { width: 100%; height: 190px; object-fit: cover; }
.article-card-body { padding: 22px; }
.article-card time { font-size: 0.78rem; color: var(--color-graphite-mute); }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat-block { border-top: 3px solid var(--color-accent); padding-top: 16px; }
.stat-num { font-family: var(--font-serif); font-size: 2.1rem; font-weight: 700; display: block; }
.stat-label { font-size: 0.88rem; color: var(--color-graphite-mute); }

.list-check { list-style: none; }
.list-check li { padding-left: 28px; position: relative; margin-bottom: 0.9rem; color: var(--color-graphite-soft); }
.list-check li::before { content: '—'; position: absolute; left: 0; color: var(--color-accent); font-weight: 700; }

.two-col-text { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }

/* ============ TABLE ============ */
table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--color-border); font-size: 0.94rem; }
th { font-family: var(--font-serif); background: var(--color-bg-alt); color: var(--color-graphite); }

/* ============ FAQ ACCORDION ============ */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-graphite);
  text-align: left;
}
.faq-question .icon { font-size: 1.3rem; color: var(--color-accent); transition: transform 0.2s; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-item.open .faq-answer { max-height: 600px; }
.faq-answer-inner { padding-bottom: 22px; color: var(--color-graphite-soft); }

/* ============ FORMS ============ */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; display: flex; flex-direction: column; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 0.88rem; font-weight: 600; margin-bottom: 6px; color: var(--color-graphite); }
.form-field input, .form-field textarea, .form-field select {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--color-graphite);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-note { font-size: 0.82rem; color: var(--color-graphite-mute); margin-top: -8px; margin-bottom: 20px; }
.form-success {
  display: none;
  border: 1px solid var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  padding: 18px 20px;
  border-radius: var(--radius);
  margin-bottom: 22px;
  font-weight: 500;
}
.form-success.show { display: block; }

/* ============ CTA STRIP ============ */
.cta-strip {
  background: var(--color-graphite);
  color: #fff;
  padding: 56px 0;
  text-align: center;
}
.cta-strip h2 { color: #fff; }
.cta-strip p { color: #d6d9dc; margin: 0 auto 1.6rem; max-width: 560px; }
.cta-strip .btn-primary { border-color: #fff; }

/* ============ FOOTER ============ */
.site-footer { background: var(--color-graphite); color: #cfd2d6; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-col h4 { color: #fff; font-family: var(--font-sans); font-size: 0.9rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1rem; }
.footer-col p, .footer-col a { color: #aeb2b7; font-size: 0.92rem; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a:hover { color: #fff; }
.footer-logo { font-family: var(--font-serif); font-size: 1.4rem; color: #fff; margin-bottom: 12px; display: block; }
.footer-bottom {
  border-top: 1px solid #3a3e43;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: #8b8f94;
}
.footer-bottom a { color: #8b8f94; }
.footer-bottom a:hover { color: #fff; }
.footer-legal-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ============ COOKIE BANNER ============ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-graphite);
  color: #e6e8ea;
  padding: 20px 24px;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  z-index: 900;
  border-top: 1px solid #45494e;
}
.cookie-banner.show { display: flex; }
.cookie-banner p { color: #d6d9dc; margin: 0; max-width: 640px; font-size: 0.9rem; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-actions button {
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  border: 1px solid #6b6f74;
  background: transparent;
  color: #fff;
}
.cookie-actions .btn-accept { background: var(--color-accent); border-color: var(--color-accent); }

/* ============ MISC PAGE BLOCKS ============ */
.content-body h2 { margin-top: 2.4rem; }
.content-body h3 { margin-top: 1.8rem; }
.content-body ul, .content-body ol { margin: 1rem 0 1.6rem 1.2rem; color: var(--color-graphite-soft); }
.content-body li { margin-bottom: 0.5rem; }
.content-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 4px 0 4px 22px;
  margin: 2rem 0;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-graphite);
}

.pill-nav { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 2.5rem; }
.pill-nav a {
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--color-graphite-soft);
}
.pill-nav a:hover, .pill-nav a.active { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-accent-soft); }

.author-box {
  display: flex;
  gap: 16px;
  align-items: center;
  border: 1px solid var(--color-border);
  padding: 20px;
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  margin: 2.4rem 0;
}
.author-box img { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }

.glossary-letter { font-family: var(--font-serif); font-size: 1.6rem; color: var(--color-accent); margin: 2.2rem 0 0.8rem; }
.glossary-term { border-bottom: 1px solid var(--color-border); padding: 16px 0; }
.glossary-term dt { font-weight: 700; color: var(--color-graphite); font-family: var(--font-serif); }
.glossary-term dd { margin: 6px 0 0; color: var(--color-graphite-soft); }

.glossary-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
.glossary-item { border-bottom: 1px solid var(--color-border); padding: 20px 0; }
.glossary-item h3 { margin-bottom: 0.4rem; }
.glossary-item p { margin-bottom: 0; font-size: 0.95rem; }

.callout-box {
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-alt);
  padding: 22px 26px;
  border-radius: var(--radius);
  margin: 1.8rem 0;
}
.callout-box p { margin-bottom: 0; }

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .hero-grid, .two-col-text { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .main-nav { position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 20px; overflow-y: auto; display: none; }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; align-items: stretch; width: 100%; }
  .dropdown { position: static; display: none; border: none; box-shadow: none; padding-left: 14px; }
  .has-dropdown.open .dropdown { display: flex; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .glossary-list { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}