:root {
  --cb-aurora-1: #0b1f2a;
  --cb-aurora-2: #0f3a4a;
  --cb-sandglow-3: #f2e7d3;
  --cb-seafoam-4: #7fd1c8;
  --cb-skyglass-5: rgba(255,255,255,0.14);
  --cb-ink-6: #0a0f14;
  --cb-mistline-7: rgba(255,255,255,0.28);
  --cb-focusring-8: #9be7ff;
}

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

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

@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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.7;
  color: var(--cb-sandglow-3);
  background: linear-gradient(158deg, var(--cb-aurora-1) 0%, var(--cb-aurora-2) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--cb-seafoam-4);
  text-decoration: none;
  transition: color 0.25s ease-in-out, text-shadow 0.25s ease-in-out;
}

a:hover {
  color: var(--cb-focusring-8);
  text-shadow: 0 0 8px rgba(155, 231, 255, 0.4);
}

a:focus-visible {
  outline: 3px solid var(--cb-focusring-8);
  outline-offset: 4px;
  border-radius: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--cb-aurora-2);
  color: var(--cb-sandglow-3);
  padding: 0.75rem 1.25rem;
  border-radius: 6px;
  z-index: 1000;
  font-weight: 600;
}

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

header.site-header {
  background: linear-gradient(92deg, var(--cb-aurora-2), var(--cb-aurora-1));
  border-bottom: 2px solid var(--cb-skyglass-5);
  padding: 1.25rem 2rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-name {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--cb-seafoam-4);
  letter-spacing: 0.5px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

nav.primary-nav {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

nav.primary-nav a {
  font-weight: 500;
  font-size: 1.05rem;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: background 0.3s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s ease;
}

nav.primary-nav a:hover {
  background: var(--cb-skyglass-5);
}

nav.primary-nav a[aria-current="page"] {
  background: var(--cb-mistline-7);
  color: var(--cb-focusring-8);
  font-weight: 600;
}

nav.breadcrumbs {
  max-width: 1200px;
  margin: 1.5rem auto 0;
  padding: 0 2rem;
}

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

nav.breadcrumbs li {
  display: flex;
  align-items: center;
}

nav.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: 0.75rem;
  color: var(--cb-mistline-7);
  font-weight: 300;
}

nav.breadcrumbs a {
  color: var(--cb-seafoam-4);
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

nav.breadcrumbs a:hover {
  color: var(--cb-focusring-8);
  transform: translateX(2px);
}

main {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 2rem;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--cb-sandglow-3);
  font-weight: 800;
  text-shadow: 0 3px 8px rgba(0,0,0,0.5);
}

h2 {
  font-size: 1.85rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--cb-seafoam-4);
  font-weight: 700;
  border-bottom: 2px solid var(--cb-skyglass-5);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.4rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--cb-sandglow-3);
  font-weight: 600;
}

p {
  margin-bottom: 1.25rem;
  max-width: 75ch;
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 2rem;
}

li {
  margin-bottom: 0.5rem;
}

.hero-shell {
  background: linear-gradient(135deg, var(--cb-aurora-2) 0%, var(--cb-aurora-1) 100%);
  border-radius: 12px;
  padding: 3rem 2.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4), inset 0 1px 0 var(--cb-mistline-7);
  position: relative;
  overflow: hidden;
}

.hero-shell::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--cb-skyglass-5) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.15); opacity: 0.5; }
}

.glass-panel {
  background: var(--cb-skyglass-5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--cb-mistline-7);
  border-radius: 10px;
  padding: 2.5rem;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  position: relative;
  z-index: 1;
}

.content-section {
  margin-bottom: 3rem;
  padding: 2rem;
  background: linear-gradient(178deg, rgba(15,58,74,0.4) 0%, rgba(11,31,42,0.6) 100%);
  border-radius: 9px;
  border-left: 4px solid var(--cb-seafoam-4);
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.grid-duo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card-sheen {
  background: linear-gradient(145deg, var(--cb-aurora-2), var(--cb-aurora-1));
  border: 1px solid var(--cb-mistline-7);
  border-radius: 11px;
  padding: 2rem;
  box-shadow: 0 7px 20px rgba(0,0,0,0.35);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.card-sheen::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 30%, var(--cb-skyglass-5) 50%, transparent 70%);
  transform: rotate(45deg);
  transition: transform 0.6s ease;
}

.card-sheen:hover::after {
  transform: rotate(45deg) translateX(100%);
}

.card-sheen:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0,0,0,0.45);
}

.callout-ribbon {
  background: linear-gradient(88deg, var(--cb-aurora-1), var(--cb-aurora-2));
  border: 2px solid var(--cb-seafoam-4);
  border-radius: 8px;
  padding: 2.25rem;
  margin: 3rem 0;
  box-shadow: 0 6px 16px rgba(0,0,0,0.4), inset 0 -2px 4px rgba(0,0,0,0.2);
  position: relative;
}

.callout-ribbon::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cb-seafoam-4), var(--cb-focusring-8), var(--cb-seafoam-4));
  border-radius: 8px 8px 0 0;
}

.cta-link {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.75rem;
  background: linear-gradient(135deg, var(--cb-seafoam-4), var(--cb-focusring-8));
  color: var(--cb-ink-6);
  font-weight: 600;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(127,209,200,0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cta-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(127,209,200,0.5);
  color: var(--cb-ink-6);
}

table.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  background: linear-gradient(162deg, rgba(15,58,74,0.5), rgba(11,31,42,0.7));
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

table.data-table caption {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cb-seafoam-4);
  padding: 1.25rem;
  text-align: left;
  background: linear-gradient(90deg, var(--cb-aurora-2), var(--cb-aurora-1));
  border-bottom: 3px solid var(--cb-seafoam-4);
}

table.data-table thead {
  background: linear-gradient(180deg, var(--cb-aurora-2), rgba(15,58,74,0.8));
}

table.data-table thead th {
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: 600;
  color: var(--cb-focusring-8);
  border-bottom: 2px solid var(--cb-mistline-7);
  font-size: 1.05rem;
}

table.data-table tbody tr {
  transition: background 0.2s ease-in;
}

table.data-table tbody tr:hover {
  background: var(--cb-skyglass-5);
}

table.data-table tbody tr:nth-child(even) {
  background: rgba(11,31,42,0.3);
}

table.data-table tbody td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--cb-skyglass-5);
  color: var(--cb-sandglow-3);
  vertical-align: top;
}

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

.faq-section {
  margin: 2rem 0;
}

details.faq-item {
  background: linear-gradient(172deg, rgba(15,58,74,0.6), rgba(11,31,42,0.5));
  border: 1px solid var(--cb-mistline-7);
  border-radius: 8px;
  margin-bottom: 1.25rem;
  padding: 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

details.faq-item:hover {
  box-shadow: 0 6px 18px rgba(0,0,0,0.4);
}

details.faq-item > summary {
  padding: 1.25rem 1.5rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--cb-seafoam-4);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.25s ease, color 0.25s ease;
  user-select: none;
}

details.faq-item > summary::-webkit-details-marker {
  display: none;
}

details.faq-item > summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cb-focusring-8);
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

details.faq-item[open] > summary::after {
  transform: rotate(45deg);
}

details.faq-item > summary:hover {
  background: var(--cb-skyglass-5);
  color: var(--cb-focusring-8);
}

details.faq-item > summary:focus-visible {
  outline: 3px solid var(--cb-focusring-8);
  outline-offset: -3px;
}

details.faq-item > div {
  padding: 1.5rem;
  border-top: 1px solid var(--cb-skyglass-5);
  background: rgba(10,15,20,0.4);
}

details.faq-item[open] {
  border-color: var(--cb-seafoam-4);
}

.intro-text {
  font-size: 1.1rem;
  color: var(--cb-sandglow-3);
  background: var(--cb-skyglass-5);
  padding: 1.5rem;
  border-left: 5px solid var(--cb-focusring-8);
  border-radius: 6px;
  margin-bottom: 2.5rem;
  box-shadow: 0 3px 10px rgba(0,0,0,0.25);
}

footer.site-footer {
  background: linear-gradient(270deg, var(--cb-aurora-1), var(--cb-ink-6));
  border-top: 2px solid var(--cb-skyglass-5);
  padding: 2rem;
  margin-top: auto;
  box-shadow: 0 -4px 12px rgba(0,0,0,0.3);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  color: var(--cb-sandglow-3);
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  nav.primary-nav {
    flex-direction: column;
    gap: 0.75rem;
    align-items: flex-start;
    width: 100%;
  }
  
  nav.primary-nav a {
    width: 100%;
    text-align: left;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .hero-shell {
    padding: 2rem 1.5rem;
  }
  
  .glass-panel {
    padding: 1.75rem;
  }
  
  .grid-duo {
    grid-template-columns: 1fr;
  }
  
  table.data-table {
    font-size: 0.9rem;
  }
  
  table.data-table thead th,
  table.data-table tbody td {
    padding: 0.75rem 0.85rem;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 18px;
  }
  
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.1rem;
  }
  
  .hero-shell {
    padding: 4rem 3.5rem;
  }
  
  .content-section {
    padding: 2.5rem;
  }
  
  .grid-duo {
    gap: 2.5rem;
  }
}