:root {
  --rz-color-ink: #0b1220;
  --rz-color-snow: #f7f9fc;
  --rz-color-glass: rgba(255,255,255,0.62);
  --rz-color-border: rgba(11,18,32,0.14);
  --rz-color-accent: #2f7cf6;
  --rz-color-accent2: #22c3a6;
  --rz-color-warm: #ffb86b;
  --rz-color-muted: #5b667a;
  --rz-radius: 18px;
  --rz-shadow: 0 18px 50px rgba(11,18,32,0.18);
  --rz-spacing-xs: 0.5rem;
  --rz-spacing-sm: 1rem;
  --rz-spacing-md: 1.5rem;
  --rz-spacing-lg: 2.5rem;
  --rz-spacing-xl: 4rem;
  --rz-font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --rz-font-display: 'Georgia', 'Times New Roman', serif;
  --rz-transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

body {
  font-family: var(--rz-font-base);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--rz-color-ink);
  background: linear-gradient(135deg, var(--rz-color-snow) 0%, #e8f0fc 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: var(--rz-spacing-lg) var(--rz-spacing-md);
}

a {
  color: var(--rz-color-accent);
  text-decoration: none;
  transition: var(--rz-transition);
  position: relative;
  font-weight: 500;
}

a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--rz-color-accent), var(--rz-color-accent2));
  transition: var(--rz-transition);
}

a:hover::after {
  width: 100%;
}

a:focus-visible {
  outline: 3px solid var(--rz-color-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.rz-skiplink {
  position: absolute;
  top: -100px;
  left: var(--rz-spacing-md);
  background: var(--rz-color-accent);
  color: white;
  padding: var(--rz-spacing-xs) var(--rz-spacing-sm);
  border-radius: var(--rz-radius);
  font-weight: 600;
  z-index: 9999;
  transition: var(--rz-transition);
}

.rz-skiplink:focus {
  top: var(--rz-spacing-sm);
}

.site-header {
  background: var(--rz-color-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--rz-color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 24px rgba(11,18,32,0.08);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--rz-spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--rz-spacing-md);
}

.site-branding .site-name {
  font-family: var(--rz-font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--rz-color-ink);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--rz-color-accent), var(--rz-color-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.primary-nav ul {
  list-style: none;
  display: flex;
  gap: var(--rz-spacing-md);
  align-items: center;
}

.primary-nav a {
  color: var(--rz-color-ink);
  font-weight: 600;
  padding: var(--rz-spacing-xs) var(--rz-spacing-sm);
  border-radius: 12px;
  transition: var(--rz-transition);
  position: relative;
}

.primary-nav a::after {
  display: none;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  background: linear-gradient(135deg, rgba(47,124,246,0.12), rgba(34,195,166,0.12));
  color: var(--rz-color-accent);
  transform: translateY(-2px);
}

.rz-breadcrumbs {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--rz-spacing-sm) var(--rz-spacing-md);
}

.rz-breadcrumbs ol {
  list-style: none;
  display: flex;
  gap: var(--rz-spacing-xs);
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.rz-breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: var(--rz-spacing-xs);
  color: var(--rz-color-muted);
}

.rz-breadcrumbs a {
  color: var(--rz-color-muted);
  transition: var(--rz-transition);
}

.rz-breadcrumbs a:hover {
  color: var(--rz-color-accent);
}

.rz-hero {
  margin-bottom: var(--rz-spacing-xl);
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-glass {
  background: var(--rz-color-glass);
  backdrop-filter: blur(24px) saturate(200%);
  -webkit-backdrop-filter: blur(24px) saturate(200%);
  border: 1px solid var(--rz-color-border);
  border-radius: var(--rz-radius);
  padding: var(--rz-spacing-xl);
  box-shadow: var(--rz-shadow);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-glass::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(47,124,246,0.08) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.2) rotate(180deg);
    opacity: 0.3;
  }
}

.hero-glass h1 {
  font-family: var(--rz-font-display);
  font-size: 2.75rem;
  line-height: 1.2;
  margin-bottom: var(--rz-spacing-md);
  color: var(--rz-color-ink);
  position: relative;
  z-index: 1;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--rz-color-muted);
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.rz-card {
  background: var(--rz-color-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--rz-color-border);
  border-radius: var(--rz-radius);
  padding: var(--rz-spacing-lg);
  margin-bottom: var(--rz-spacing-lg);
  box-shadow: 0 8px 32px rgba(11,18,32,0.12);
  transition: var(--rz-transition);
}

.rz-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--rz-shadow);
}

.rz-card h2 {
  font-family: var(--rz-font-display);
  font-size: 2rem;
  margin-bottom: var(--rz-spacing-md);
  color: var(--rz-color-ink);
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--rz-color-accent), var(--rz-color-accent2)) 1;
  padding-bottom: var(--rz-spacing-xs);
}

.rz-card h3 {
  font-size: 1.5rem;
  margin-top: var(--rz-spacing-md);
  margin-bottom: var(--rz-spacing-sm);
  color: var(--rz-color-accent);
}

.rz-card p {
  margin-bottom: var(--rz-spacing-sm);
}

.rz-card ul,
.rz-card ol {
  margin-left: var(--rz-spacing-md);
  margin-bottom: var(--rz-spacing-sm);
}

.rz-card li {
  margin-bottom: var(--rz-spacing-xs);
}

.rz-grid {
  display: grid;
  gap: var(--rz-spacing-lg);
  margin-bottom: var(--rz-spacing-lg);
}

.rz-grid.two-col {
  grid-template-columns: repeat(2, 1fr);
}

.rz-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: var(--rz-spacing-md) 0;
  border-radius: var(--rz-radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(11,18,32,0.1);
  background: white;
}

.rz-table caption {
  font-family: var(--rz-font-display);
  font-size: 1.25rem;
  font-weight: 700;
  text-align: left;
  padding: var(--rz-spacing-sm);
  background: linear-gradient(135deg, var(--rz-color-accent), var(--rz-color-accent2));
  color: white;
  border-radius: var(--rz-radius) var(--rz-radius) 0 0;
}

.rz-table thead {
  background: linear-gradient(135deg, rgba(47,124,246,0.15), rgba(34,195,166,0.15));
}

.rz-table th {
  padding: var(--rz-spacing-sm) var(--rz-spacing-md);
  text-align: left;
  font-weight: 700;
  color: var(--rz-color-ink);
  border-bottom: 2px solid var(--rz-color-accent);
  font-size: 1rem;
}

.rz-table td {
  padding: var(--rz-spacing-sm) var(--rz-spacing-md);
  border-bottom: 1px solid var(--rz-color-border);
  transition: var(--rz-transition);
}

.rz-table tbody tr {
  transition: var(--rz-transition);
}

.rz-table tbody tr:hover {
  background: linear-gradient(90deg, rgba(47,124,246,0.05), rgba(34,195,166,0.05));
  transform: scale(1.01);
}

.rz-table tbody tr:last-child td {
  border-bottom: none;
}

.rz-accordion {
  background: white;
  border: 1px solid var(--rz-color-border);
  border-radius: 14px;
  margin-bottom: var(--rz-spacing-sm);
  overflow: hidden;
  transition: var(--rz-transition);
}

.rz-accordion:hover {
  border-color: var(--rz-color-accent);
  box-shadow: 0 4px 16px rgba(47,124,246,0.15);
}

.rz-accordion > summary {
  padding: var(--rz-spacing-md);
  font-weight: 700;
  font-size: 1.125rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(47,124,246,0.08), rgba(34,195,166,0.08));
  transition: var(--rz-transition);
  user-select: none;
}

.rz-accordion > summary::-webkit-details-marker {
  display: none;
}

.rz-accordion > summary::after {
  content: '+';
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--rz-color-accent);
  transition: var(--rz-transition);
}

.rz-accordion[open] > summary::after {
  content: '−';
  transform: rotate(180deg);
}

.rz-accordion > summary:hover {
  background: linear-gradient(135deg, rgba(47,124,246,0.15), rgba(34,195,166,0.15));
}

.accordion-content {
  padding: var(--rz-spacing-md);
  border-top: 1px solid var(--rz-color-border);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.glossary-list dt {
  font-weight: 700;
  color: var(--rz-color-accent);
  margin-top: var(--rz-spacing-sm);
  font-size: 1.125rem;
}

.glossary-list dd {
  margin-left: var(--rz-spacing-md);
  margin-bottom: var(--rz-spacing-sm);
  color: var(--rz-color-muted);
}

.cta-section {
  text-align: center;
  background: linear-gradient(135deg, rgba(47,124,246,0.1), rgba(34,195,166,0.1));
}

.cta-buttons {
  display: flex;
  gap: var(--rz-spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--rz-spacing-md);
}

.cta-button {
  display: inline-block;
  padding: var(--rz-spacing-sm) var(--rz-spacing-lg);
  background: linear-gradient(135deg, var(--rz-color-accent), var(--rz-color-accent2));
  color: white;
  font-weight: 700;
  border-radius: 12px;
  transition: var(--rz-transition);
  box-shadow: 0 4px 16px rgba(47,124,246,0.3);
  position: relative;
  overflow: hidden;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
  width: 300px;
  height: 300px;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(47,124,246,0.4);
}

.cta-button::after {
  display: none;
}

.site-footer {
  background: var(--rz-color-ink);
  color: var(--rz-color-snow);
  padding: var(--rz-spacing-lg) var(--rz-spacing-md);
  margin-top: var(--rz-spacing-xl);
  border-top: 3px solid var(--rz-color-accent);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--rz-spacing-md);
}

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

.footer-nav a {
  color: var(--rz-color-snow);
  transition: var(--rz-transition);
}

.footer-nav a:hover {
  color: var(--rz-color-accent2);
}

.copyright {
  color: var(--rz-color-muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .rz-grid.two-col {
    grid-template-columns: 1fr;
  }
  .hero-glass h1 {
    font-size: 2.25rem;
  }
  .header-container {
    flex-direction: column;
    gap: var(--rz-spacing-sm);
  }
  .primary-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 600px) {
  :root {
    --rz-spacing-lg: 1.5rem;
    --rz-spacing-xl: 2.5rem;
  }
  body {
    font-size: 1rem;
  }
  .hero-glass h1 {
    font-size: 1.75rem;
  }
  .hero-tagline {
    font-size: 1rem;
  }
  .rz-card h2 {
    font-size: 1.5rem;
  }
  .rz-table {
    font-size: 0.9rem;
  }
  .rz-table th,
  .rz-table td {
    padding: var(--rz-spacing-xs) var(--rz-spacing-sm);
  }
  .cta-buttons {
    flex-direction: column;
  }
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  .footer-nav ul {
    flex-direction: column;
    align-items: center;
  }
}