:root {
  --lrh-aurora-ink: #0b1220;
  --lrh-aurora-snow: #f6f7fb;
  --lrh-aurora-jade: #2dd4bf;
  --lrh-aurora-saffron: #f59e0b;
  --lrh-aurora-rose: #fb7185;
  --lrh-aurora-slate: #94a3b8;
  --lrh-aurora-glass: rgba(255,255,255,0.10);
  --lrh-aurora-stroke: rgba(148,163,184,0.35);
  --lrh-aurora-shadow: 0 18px 50px rgba(2,6,23,0.35);
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;
  --max-width: 1200px;
  --border-radius: 12px;
  --transition-speed: 0.3s;
}

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

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

@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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--lrh-aurora-ink);
  background: linear-gradient(135deg, var(--lrh-aurora-snow) 0%, #e0e7ff 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--lrh-aurora-jade);
  color: var(--lrh-aurora-ink);
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 var(--border-radius) 0;
  z-index: 1000;
}

.skip-link:focus {
  top: 0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.site-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--lrh-aurora-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--lrh-aurora-stroke);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.site-branding {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--lrh-aurora-jade), var(--lrh-aurora-saffron));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-list {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-list a {
  color: var(--lrh-aurora-ink);
  text-decoration: none;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: all var(--transition-speed) ease;
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--lrh-aurora-jade);
  transition: all var(--transition-speed) ease;
  transform: translateX(-50%);
}

.nav-list a:hover::after, .nav-list a[aria-current="page"]::after {
  width: 80%;
}

.nav-list a:hover {
  color: var(--lrh-aurora-jade);
  background: var(--lrh-aurora-glass);
}

.nav-list a:focus-visible {
  outline: 3px solid var(--lrh-aurora-jade);
  outline-offset: 4px;
}

.breadcrumb {
  background: var(--lrh-aurora-glass);
  border-bottom: 1px solid var(--lrh-aurora-stroke);
  padding: var(--spacing-sm) 0;
}

.breadcrumb-list {
  display: flex;
  gap: var(--spacing-xs);
  list-style: none;
  flex-wrap: wrap;
  align-items: center;
}

.breadcrumb-list li:not(:last-child)::after {
  content: '/';
  margin-left: var(--spacing-xs);
  color: var(--lrh-aurora-slate);
}

.breadcrumb-list a {
  color: var(--lrh-aurora-ink);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.breadcrumb-list a:hover {
  color: var(--lrh-aurora-jade);
  text-decoration: underline;
}

.breadcrumb-list a:focus-visible {
  outline: 2px solid var(--lrh-aurora-jade);
  outline-offset: 2px;
  border-radius: 4px;
}

main {
  flex: 1;
  padding: var(--spacing-lg) 0;
}

section {
  margin-bottom: var(--spacing-xl);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--lrh-aurora-ink);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--lrh-aurora-ink);
  font-weight: 700;
  position: relative;
  padding-bottom: var(--spacing-xs);
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--lrh-aurora-jade), var(--lrh-aurora-saffron));
  border-radius: 2px;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin-bottom: var(--spacing-sm);
  color: var(--lrh-aurora-ink);
  font-weight: 600;
}

h4 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--lrh-aurora-ink);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--lrh-aurora-ink);
  max-width: 75ch;
}

.hero {
  background: linear-gradient(135deg, rgba(45, 212, 191, 0.1), rgba(245, 158, 11, 0.1));
  border-radius: var(--border-radius);
  padding: var(--spacing-xl) var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--lrh-aurora-shadow);
  border: 1px solid var(--lrh-aurora-stroke);
}

.hero-lead {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  line-height: 1.7;
  color: var(--lrh-aurora-ink);
  max-width: 100%;
}

.lead {
  font-size: clamp(1.125rem, 2.5vw, 1.25rem);
  line-height: 1.7;
  color: var(--lrh-aurora-ink);
  margin-bottom: var(--spacing-lg);
}

.table-wrapper {
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
}

caption {
  font-weight: 700;
  font-size: 1.125rem;
  padding: var(--spacing-md);
  text-align: left;
  background: linear-gradient(135deg, var(--lrh-aurora-jade), var(--lrh-aurora-saffron));
  color: white;
}

thead {
  background: var(--lrh-aurora-ink);
  color: white;
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--lrh-aurora-jade);
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--lrh-aurora-stroke);
}

tbody tr:nth-child(even) {
  background: rgba(45, 212, 191, 0.05);
}

tbody tr:hover {
  background: rgba(45, 212, 191, 0.15);
  transition: background var(--transition-speed) ease;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--lrh-aurora-stroke);
  transition: all var(--transition-speed) ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
  border-color: var(--lrh-aurora-jade);
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, var(--lrh-aurora-jade), var(--lrh-aurora-saffron));
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: all var(--transition-speed) ease;
  border: none;
  cursor: pointer;
  margin-top: var(--spacing-sm);
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(45, 212, 191, 0.4);
}

.btn:focus-visible {
  outline: 3px solid var(--lrh-aurora-jade);
  outline-offset: 4px;
}

details {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--lrh-aurora-stroke);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

summary {
  font-weight: 600;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: all var(--transition-speed) ease;
  list-style: none;
  display: flex;
  align-items: center;
  color: var(--lrh-aurora-ink);
}

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

summary::before {
  content: '▶';
  margin-right: var(--spacing-sm);
  transition: transform var(--transition-speed) ease;
  color: var(--lrh-aurora-jade);
  font-size: 0.875rem;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary:hover {
  background: var(--lrh-aurora-glass);
  color: var(--lrh-aurora-jade);
}

summary:focus-visible {
  outline: 3px solid var(--lrh-aurora-jade);
  outline-offset: 2px;
}

details[open] summary {
  margin-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--lrh-aurora-jade);
}

details p {
  padding-left: var(--spacing-lg);
  color: var(--lrh-aurora-ink);
}

.resource-list {
  list-style: none;
  padding: 0;
}

.resource-list li {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
  position: relative;
}

.resource-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--lrh-aurora-jade);
  font-weight: 700;
}

.resource-list a {
  color: var(--lrh-aurora-ink);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-speed) ease;
  border-bottom: 2px solid transparent;
}

.resource-list a:hover {
  color: var(--lrh-aurora-jade);
  border-bottom-color: var(--lrh-aurora-jade);
}

.resource-list a:focus-visible {
  outline: 2px solid var(--lrh-aurora-jade);
  outline-offset: 4px;
  border-radius: 4px;
}

a {
  color: var(--lrh-aurora-jade);
  transition: color var(--transition-speed) ease;
}

a:hover {
  color: var(--lrh-aurora-saffron);
}

a:focus-visible {
  outline: 2px solid var(--lrh-aurora-jade);
  outline-offset: 2px;
  border-radius: 4px;
}

.site-footer {
  background: var(--lrh-aurora-ink);
  color: var(--lrh-aurora-snow);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3, .footer-section h4 {
  color: var(--lrh-aurora-jade);
  margin-bottom: var(--spacing-sm);
}

.footer-section p, .footer-section li {
  color: var(--lrh-aurora-snow);
  line-height: 1.8;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--lrh-aurora-snow);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.footer-section a:hover {
  color: var(--lrh-aurora-jade);
}

.footer-section a:focus-visible {
  outline: 2px solid var(--lrh-aurora-jade);
  outline-offset: 2px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--lrh-aurora-stroke);
  color: var(--lrh-aurora-slate);
}

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .nav-list {
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
}