:root {
  --aurora-ink-9: #0b1220;
  --aurora-surface-1: rgba(255,255,255,0.72);
  --aurora-surface-2: rgba(255,255,255,0.52);
  --aurora-accent-1: #2f7cf6;
  --aurora-accent-2: #7c3aed;
  --aurora-mint: #22c55e;
  --aurora-warm: #f59e0b;
  --aurora-border: rgba(15,23,42,0.14);
  --aurora-shadow: 0 18px 50px rgba(2,6,23,0.18);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--aurora-ink-9);
  background: linear-gradient(135deg, #e0f2fe 0%, #ddd6fe 50%, #fef3c7 100%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--aurora-accent-1);
  color: white;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 600;
  z-index: 10000;
}

.skip-link:focus {
  top: 10px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  background: var(--aurora-surface-1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--aurora-border);
  box-shadow: var(--aurora-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.site-name {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--aurora-accent-1), var(--aurora-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.site-header nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.site-header nav a {
  text-decoration: none;
  color: var(--aurora-ink-9);
  font-weight: 600;
  font-size: 1rem;
  position: relative;
  transition: color 0.3s ease;
}

.site-header nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--aurora-accent-1), var(--aurora-accent-2));
  transition: width 0.3s ease;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after,
.site-header nav a[aria-current="page"]::after {
  width: 100%;
}

.site-header nav a:focus-visible {
  outline: 3px solid var(--aurora-accent-1);
  outline-offset: 4px;
  border-radius: 4px;
}

.breadcrumb {
  background: var(--aurora-surface-2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--aurora-border);
  padding: 0.75rem 0;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.95rem;
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  margin-left: 0.75rem;
  color: var(--aurora-border);
}

.breadcrumb a {
  color: var(--aurora-accent-1);
  text-decoration: none;
  transition: color 0.3s ease;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--aurora-accent-2);
  text-decoration: underline;
}

.breadcrumb a:focus-visible {
  outline: 2px solid var(--aurora-accent-1);
  outline-offset: 3px;
  border-radius: 3px;
}

main {
  flex: 1;
}

section {
  padding: 4rem 0;
}

.hero {
  background: var(--aurora-surface-1);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 1.5rem;
  margin: 3rem auto;
  padding: 4rem 0;
  box-shadow: var(--aurora-shadow);
  border: 1px solid var(--aurora-border);
}

h1 {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--aurora-accent-1), var(--aurora-accent-2), var(--aurora-mint));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--aurora-ink-9);
  position: relative;
  padding-bottom: 0.75rem;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--aurora-accent-1), var(--aurora-accent-2));
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--aurora-ink-9);
}

p {
  margin-bottom: 1.25rem;
  font-size: 1.0625rem;
}

.hero-intro {
  font-size: 1.1875rem;
  line-height: 1.8;
  color: var(--aurora-ink-9);
}

.cta-group {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--aurora-accent-1), var(--aurora-accent-2));
  color: white;
  text-decoration: none;
  font-weight: 700;
  border-radius: 0.75rem;
  box-shadow: 0 8px 24px rgba(47, 124, 246, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(47, 124, 246, 0.4);
}

.cta-button:focus-visible {
  outline: 3px solid var(--aurora-accent-1);
  outline-offset: 4px;
  transform: translateY(-3px);
}

.what-we-know,
.how-to-check,
.authoritative-links,
.internal-nav,
.faq-intro,
.faq-accordion,
.faq-table,
.faq-links,
.about-intro,
.research-labels,
.team-roles,
.policy-table,
.contact,
.about-links {
  background: var(--aurora-surface-1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 1.25rem;
  margin: 2rem auto;
  padding: 3rem 0;
  box-shadow: var(--aurora-shadow);
  border: 1px solid var(--aurora-border);
}

.timeline-table {
  background: var(--aurora-surface-2);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 1.25rem;
  margin: 2rem auto;
  padding: 3rem 0;
  box-shadow: 0 12px 40px rgba(2,6,23,0.15);
  border: 1px solid var(--aurora-border);
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--aurora-border);
  background: white;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
}

caption {
  font-size: 1.125rem;
  font-weight: 700;
  text-align: left;
  padding: 1rem 1.25rem;
  background: linear-gradient(135deg, var(--aurora-accent-1), var(--aurora-accent-2));
  color: white;
  border-radius: 0.75rem 0.75rem 0 0;
}

thead {
  background: linear-gradient(135deg, rgba(47, 124, 246, 0.1), rgba(124, 58, 237, 0.1));
}

th {
  text-align: left;
  padding: 1rem 1.25rem;
  font-weight: 700;
  color: var(--aurora-ink-9);
  border-bottom: 2px solid var(--aurora-border);
}

td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--aurora-border);
}

tbody tr:nth-child(even) {
  background: rgba(47, 124, 246, 0.03);
}

tbody tr:hover {
  background: rgba(47, 124, 246, 0.08);
  transition: background 0.3s ease;
}

.auth-links {
  list-style: none;
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.auth-links li {
  background: white;
  border: 1px solid var(--aurora-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  box-shadow: 0 4px 12px rgba(2,6,23,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.auth-links li:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(2,6,23,0.12);
}

.auth-links a {
  color: var(--aurora-accent-1);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.0625rem;
  display: block;
  transition: color 0.3s ease;
}

.auth-links a:hover,
.auth-links a:focus-visible {
  color: var(--aurora-accent-2);
  text-decoration: underline;
}

.auth-links a:focus-visible {
  outline: 3px solid var(--aurora-accent-1);
  outline-offset: 4px;
  border-radius: 4px;
}

details {
  background: white;
  border: 1px solid var(--aurora-border);
  border-radius: 0.75rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px rgba(2,6,23,0.08);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

details:hover {
  box-shadow: 0 8px 20px rgba(2,6,23,0.12);
}

details[open] {
  box-shadow: 0 8px 24px rgba(47, 124, 246, 0.15);
}

summary {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  cursor: pointer;
  background: linear-gradient(135deg, rgba(47, 124, 246, 0.08), rgba(124, 58, 237, 0.08));
  transition: background 0.3s ease;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--aurora-accent-1);
  transition: transform 0.3s ease;
}

details[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

summary:hover {
  background: linear-gradient(135deg, rgba(47, 124, 246, 0.12), rgba(124, 58, 237, 0.12));
}

summary:focus-visible {
  outline: 3px solid var(--aurora-accent-1);
  outline-offset: -3px;
}

details div {
  padding: 1.5rem;
  line-height: 1.8;
}

a {
  color: var(--aurora-accent-1);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--aurora-accent-2);
}

a:focus-visible {
  outline: 3px solid var(--aurora-accent-1);
  outline-offset: 3px;
  border-radius: 3px;
}

.site-footer {
  background: var(--aurora-surface-1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--aurora-border);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.site-footer nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.site-footer nav a {
  color: var(--aurora-ink-9);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.site-footer nav a:hover,
.site-footer nav a:focus-visible {
  color: var(--aurora-accent-1);
}

.disclaimer {
  font-size: 0.9375rem;
  color: rgba(11, 18, 32, 0.7);
  text-align: center;
  margin-bottom: 1rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.copyright {
  text-align: center;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--aurora-ink-9);
}

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .site-header nav ul {
    gap: 1.25rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.625rem;
  }
  
  .cta-group {
    flex-direction: column;
  }
  
  .cta-button {
    text-align: center;
  }
  
  table {
    font-size: 0.9375rem;
  }
  
  th, td {
    padding: 0.75rem 1rem;
  }
}