:root {
  --acg-ink-0: #0B1220;
  --acg-ink-1: #16233A;
  --acg-snow-0: #F6F8FF;
  --acg-snow-1: #E9EEFF;
  --acg-aurora-0: #6EE7FF;
  --acg-aurora-1: #A78BFA;
  --acg-gold-0: #F6C177;
  --acg-line-0: rgba(255,255,255,0.18);
  --acg-glass-0: rgba(255,255,255,0.08);
  --acg-space-xs: 0.5rem;
  --acg-space-sm: 1rem;
  --acg-space-md: 1.5rem;
  --acg-space-lg: 2.5rem;
  --acg-space-xl: 4rem;
  --acg-radius: 0.75rem;
  --acg-transition: 0.3s ease;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  box-sizing: border-box;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--acg-snow-0);
  background: linear-gradient(135deg, var(--acg-ink-0) 0%, var(--acg-ink-1) 100%);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.acg-skiplink {
  position: absolute;
  top: -100px;
  left: var(--acg-space-sm);
  background: var(--acg-aurora-0);
  color: var(--acg-ink-0);
  padding: var(--acg-space-xs) var(--acg-space-sm);
  border-radius: var(--acg-radius);
  text-decoration: none;
  font-weight: 600;
  z-index: 1000;
}

.acg-skiplink:focus-visible {
  top: var(--acg-space-sm);
  outline: 3px solid var(--acg-gold-0);
  outline-offset: 2px;
}

.acg-shell {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--acg-space-sm);
  gap: var(--acg-space-md);
}

.acg-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--acg-glass-0);
  backdrop-filter: blur(12px);
  border: 1px solid var(--acg-line-0);
  border-radius: var(--acg-radius);
  padding: var(--acg-space-sm) var(--acg-space-md);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.acg-brand {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 700;
  background: linear-gradient(90deg, var(--acg-aurora-0), var(--acg-aurora-1));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.acg-nav {
  display: flex;
  gap: var(--acg-space-sm);
  flex-wrap: wrap;
}

.acg-nav a {
  color: var(--acg-snow-1);
  text-decoration: none;
  padding: var(--acg-space-xs) var(--acg-space-sm);
  border-radius: calc(var(--acg-radius) / 2);
  transition: all var(--acg-transition);
  font-weight: 500;
  position: relative;
}

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

.acg-nav a:hover::after {
  width: 80%;
}

.acg-nav a:focus-visible {
  outline: 2px solid var(--acg-gold-0);
  outline-offset: 4px;
}

.acg-nav a[aria-current="page"] {
  background: linear-gradient(135deg, var(--acg-aurora-0), var(--acg-aurora-1));
  color: var(--acg-ink-0);
  font-weight: 700;
}

.acg-breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--acg-space-xs);
  font-size: 0.9rem;
  color: var(--acg-snow-1);
  padding: var(--acg-space-xs) var(--acg-space-sm);
  background: var(--acg-glass-0);
  border-radius: calc(var(--acg-radius) / 2);
  border: 1px solid var(--acg-line-0);
  backdrop-filter: blur(8px);
}

.acg-breadcrumbs a {
  color: var(--acg-aurora-0);
  text-decoration: none;
  transition: color var(--acg-transition);
}

.acg-breadcrumbs a:hover {
  color: var(--acg-gold-0);
  text-decoration: underline;
}

.acg-breadcrumbs a:focus-visible {
  outline: 2px solid var(--acg-gold-0);
  outline-offset: 2px;
  border-radius: 2px;
}

main#acg-main {
  display: flex;
  flex-direction: column;
  gap: var(--acg-space-lg);
  padding: var(--acg-space-md) 0;
}

.acg-hero {
  background: linear-gradient(135deg, var(--acg-glass-0), rgba(110, 231, 255, 0.05));
  backdrop-filter: blur(16px);
  border: 2px solid var(--acg-line-0);
  border-radius: var(--acg-radius);
  padding: var(--acg-space-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  position: relative;
  overflow: hidden;
}

.acg-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--acg-aurora-1) 0%, transparent 70%);
  opacity: 0.15;
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.15; }
  50% { transform: scale(1.2); opacity: 0.25; }
}

.acg-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: var(--acg-space-md);
  background: linear-gradient(90deg, var(--acg-snow-0), var(--acg-aurora-0));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.acg-hero p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  margin-bottom: var(--acg-space-sm);
  color: var(--acg-snow-1);
}

.acg-card {
  background: var(--acg-glass-0);
  backdrop-filter: blur(12px);
  border: 1px solid var(--acg-line-0);
  border-radius: var(--acg-radius);
  padding: var(--acg-space-lg);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
  transition: transform var(--acg-transition), box-shadow var(--acg-transition);
}

.acg-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(110, 231, 255, 0.2);
}

.acg-card h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--acg-space-md);
  color: var(--acg-aurora-0);
  border-bottom: 2px solid var(--acg-line-0);
  padding-bottom: var(--acg-space-xs);
}

.acg-card p {
  margin-bottom: var(--acg-space-sm);
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
}

.acg-card a {
  color: var(--acg-aurora-0);
  text-decoration: underline;
  transition: color var(--acg-transition);
  font-weight: 500;
}

.acg-card a:hover {
  color: var(--acg-gold-0);
}

.acg-card a:focus-visible {
  outline: 2px solid var(--acg-gold-0);
  outline-offset: 2px;
  border-radius: 2px;
}

.acg-tablewrap {
  overflow-x: auto;
  margin: var(--acg-space-md) 0;
  border-radius: var(--acg-radius);
  border: 1px solid var(--acg-line-0);
}

table.acg-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(11, 18, 32, 0.6);
  backdrop-filter: blur(8px);
  font-size: clamp(0.85rem, 1vw, 0.95rem);
}

table.acg-table caption {
  caption-side: top;
  padding: var(--acg-space-sm);
  font-weight: 700;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--acg-aurora-0);
  text-align: left;
  background: var(--acg-glass-0);
  border-bottom: 2px solid var(--acg-line-0);
}

table.acg-table thead th {
  background: linear-gradient(135deg, var(--acg-ink-1), var(--acg-ink-0));
  color: var(--acg-snow-0);
  padding: var(--acg-space-sm);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--acg-aurora-0);
}

table.acg-table tbody td {
  padding: var(--acg-space-sm);
  border-bottom: 1px solid var(--acg-line-0);
  color: var(--acg-snow-1);
}

table.acg-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.03);
}

table.acg-table tbody tr:hover {
  background: rgba(110, 231, 255, 0.08);
  transition: background var(--acg-transition);
}

table.acg-table tbody td a {
  color: var(--acg-aurora-0);
  text-decoration: none;
  border-bottom: 1px dotted var(--acg-aurora-0);
  transition: all var(--acg-transition);
}

table.acg-table tbody td a:hover {
  color: var(--acg-gold-0);
  border-bottom-color: var(--acg-gold-0);
}

details.acg-accordion {
  background: var(--acg-glass-0);
  border: 1px solid var(--acg-line-0);
  border-radius: var(--acg-radius);
  margin-bottom: var(--acg-space-sm);
  overflow: hidden;
  transition: all var(--acg-transition);
}

details.acg-accordion > summary {
  padding: var(--acg-space-sm) var(--acg-space-md);
  font-weight: 600;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--acg-aurora-0);
  cursor: pointer;
  list-style: none;
  background: linear-gradient(90deg, var(--acg-glass-0), transparent);
  border-bottom: 1px solid transparent;
  transition: all var(--acg-transition);
  display: flex;
  align-items: center;
  gap: var(--acg-space-xs);
}

details.acg-accordion > summary::before {
  content: '▶';
  display: inline-block;
  transition: transform var(--acg-transition);
  color: var(--acg-gold-0);
}

details.acg-accordion[open] > summary::before {
  transform: rotate(90deg);
}

details.acg-accordion > summary:hover {
  background: rgba(110, 231, 255, 0.1);
  color: var(--acg-gold-0);
}

details.acg-accordion[open] > summary {
  border-bottom-color: var(--acg-line-0);
  margin-bottom: var(--acg-space-sm);
}

details.acg-accordion > summary:focus-visible {
  outline: 2px solid var(--acg-gold-0);
  outline-offset: -2px;
}

details.acg-accordion > div {
  padding: 0 var(--acg-space-md) var(--acg-space-md) var(--acg-space-md);
  color: var(--acg-snow-1);
  animation: slideDown 0.3s ease;
}

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

details.acg-accordion p {
  margin-bottom: var(--acg-space-sm);
  line-height: 1.7;
}

details.acg-accordion a {
  color: var(--acg-aurora-0);
  text-decoration: underline;
  transition: color var(--acg-transition);
}

details.acg-accordion a:hover {
  color: var(--acg-gold-0);
}

.acg-footer {
  background: var(--acg-glass-0);
  backdrop-filter: blur(12px);
  border: 1px solid var(--acg-line-0);
  border-radius: var(--acg-radius);
  padding: var(--acg-space-lg);
  margin-top: var(--acg-space-xl);
  display: grid;
  gap: var(--acg-space-md);
}

.acg-footer nav {
  display: flex;
  gap: var(--acg-space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.acg-footer nav a {
  color: var(--acg-snow-1);
  text-decoration: none;
  padding: var(--acg-space-xs) var(--acg-space-sm);
  border-radius: calc(var(--acg-radius) / 2);
  transition: all var(--acg-transition);
  border: 1px solid transparent;
}

.acg-footer nav a:hover {
  border-color: var(--acg-aurora-0);
  color: var(--acg-aurora-0);
  background: rgba(110, 231, 255, 0.05);
}

.acg-footer nav a:focus-visible {
  outline: 2px solid var(--acg-gold-0);
  outline-offset: 2px;
}

.acg-references {
  border-top: 1px solid var(--acg-line-0);
  padding-top: var(--acg-space-md);
}

.acg-references p {
  font-weight: 600;
  color: var(--acg-aurora-0);
  margin-bottom: var(--acg-space-xs);
}

.acg-references ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--acg-space-xs);
}

.acg-references li {
  font-size: 0.9rem;
}

.acg-references a {
  color: var(--acg-snow-1);
  text-decoration: none;
  transition: color var(--acg-transition);
  border-bottom: 1px dotted var(--acg-line-0);
}

.acg-references a:hover {
  color: var(--acg-gold-0);
  border-bottom-color: var(--acg-gold-0);
}

.acg-copyright {
  text-align: center;
  font-size: 0.9rem;
  color: var(--acg-snow-1);
  padding-top: var(--acg-space-sm);
  border-top: 1px solid var(--acg-line-0);
}

@media (max-width: 48rem) {
  .acg-topbar {
    flex-direction: column;
    gap: var(--acg-space-sm);
    text-align: center;
  }
  .acg-nav {
    justify-content: center;
  }
  .acg-footer nav {
    flex-direction: column;
    align-items: center;
  }
}

@media (min-width: 72rem) {
  .acg-shell {
    padding: var(--acg-space-lg);
  }
  main#acg-main {
    gap: var(--acg-space-xl);
  }
}

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