.prose a,
.content-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: color var(--motion-duration-fast) var(--motion-ease),
              text-decoration-color var(--motion-duration-fast) var(--motion-ease);
}

@media (hover: hover) and (pointer: fine) {
  .prose a:hover,
  .content-link:hover {
    color: var(--color-accent-hover);
    text-decoration-color: var(--color-accent-hover);
  }
}

.callout {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-block: var(--space-6);
  background-color: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-left-width: 4px;
}

.callout-info {
  border-left-color: var(--color-accent);
  background-color: var(--color-accent-subtle);
}

.callout-warning {
  border-left-color: var(--primitive-amber-400);
  background-color: rgba(251, 191, 36, 0.08);
}

.callout-success {
  border-left-color: var(--primitive-emerald-500);
  background-color: rgba(16, 185, 129, 0.08);
}

.callout-title {
  font-family: var(--font-sans);
  font-weight: 650;
  font-size: var(--font-small);
  margin-bottom: var(--space-1);
}

.callout-content {
  font-family: var(--font-sans);
  font-size: var(--font-small);
  line-height: 1.55;
  color: var(--color-text-secondary);
}

.table-container {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-block: var(--space-6);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-family: var(--font-sans);
  font-size: var(--font-small);
}

.table th {
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-bg-surface-elevated);
  color: var(--color-text-primary);
  font-weight: 600;
  border-bottom: 1px solid var(--color-border-subtle);
  white-space: nowrap;
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text-secondary);
}

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

.table tbody tr:hover {
  background-color: var(--color-bg-surface-hover);
}

.prose ul, .prose ol {
  padding-left: var(--space-6);
  margin-block: var(--space-4);
}

.prose li {
  margin-block: var(--space-2);
  line-height: var(--line-height-body);
}

.prose li::marker {
  color: var(--color-accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Button Foundation — 44x44px Minimum Touch Target (WCAG 2.2 AA SC 2.5.8) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  min-width: 44px;
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-sans);
  font-size: var(--font-small);
  font-weight: 550;
  line-height: 1.2;
  text-decoration: none;
  border-radius: var(--radius-md);
  box-sizing: border-box;
  cursor: pointer;
  border: 1px solid transparent;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: all var(--motion-duration-fast) var(--motion-ease);
}

.btn svg {
  transition: transform var(--motion-duration-fast) var(--motion-ease);
}

.btn:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--color-bg-page), 0 0 0 4px var(--color-focus-ring);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  color: var(--color-text-inverse);
  border-color: transparent;
  box-shadow: 0 2px 8px -2px var(--color-accent-subtle);
}

.btn-secondary {
  background-color: var(--color-bg-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border-subtle);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-hover), var(--color-accent));
    transform: translateY(-2px);
    box-shadow: 0 6px 18px -4px var(--color-accent-subtle);
  }

  .btn-primary:hover svg {
    transform: scale(1.1);
  }

  .btn-secondary:hover {
    background-color: var(--color-bg-surface-hover);
    border-color: var(--color-border-interactive);
    color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }

  .btn-secondary:hover svg {
    transform: scale(1.1);
  }

  .btn-ghost:hover {
    background-color: var(--color-bg-surface-hover);
    color: var(--color-text-primary);
    transform: translateY(-1px);
  }
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-sm {
  min-height: 36px;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-metadata);
}

.link-external {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
}

.link-external .icon-external {
  width: 14px;
  height: 14px;
  stroke-width: 1.75;
  stroke: currentColor;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  transition: transform var(--motion-duration-fast) var(--motion-ease);
}

@media (hover: hover) and (pointer: fine) {
  .link-external:hover {
    color: var(--color-accent-hover);
  }
  .link-external:hover .icon-external {
    transform: translate(1px, -1px);
  }
}

.card {
  position: relative;
  isolation: isolate;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--motion-duration-normal) var(--motion-ease);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0;
  transition: opacity var(--motion-duration-normal) var(--motion-ease);
}

@media (max-width: 640px) {
  .card {
    padding: var(--space-4);
  }
}

.card {
  cursor: default;
}

.card-interactive,
a.card {
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .card:not(.card-interactive):not(a):hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
    transform: none;
  }

  .card-interactive:hover,
  a.card:hover {
    border-color: var(--color-border-interactive);
    transform: translateY(-3px);
    box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.35), 0 0 20px -4px var(--color-accent-subtle);
  }

  .card-interactive:hover::before,
  a.card:hover::before {
    opacity: 1;
  }

  .card-interactive:hover h3,
  a.card:hover h3 {
    color: var(--color-accent);
    transition: color var(--motion-duration-fast) var(--motion-ease);
  }
}

.card-interactive:focus-within,
a.card:focus-visible {
  border-color: var(--color-border-interactive);
}

.card-stretched-link::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.card a.btn,
.card button,
.card .layout-cluster a {
  position: relative;
  z-index: 2;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center;
  padding: clamp(var(--space-6), 4vw, var(--space-8));
  margin-bottom: var(--space-12);
  background: radial-gradient(circle at 90% 10%, var(--color-accent-subtle), transparent 60%), var(--color-bg-surface);
  border: 1px solid var(--color-border-subtle);
  animation: heroFadeIn 0.5s ease-out both;
}

.layout-grid-2 > :nth-child(1) { animation: heroFadeIn 0.45s ease-out 0.08s both; }
.layout-grid-2 > :nth-child(2) { animation: heroFadeIn 0.45s ease-out 0.16s both; }
.layout-grid-2 > :nth-child(3) { animation: heroFadeIn 0.45s ease-out 0.24s both; }
.layout-grid-2 > :nth-child(4) { animation: heroFadeIn 0.45s ease-out 0.32s both; }

@media (min-width: 640px) {
  .hero-panel {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-8);
  }
}

.hero-avatar {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-full);
  border: 2.5px solid var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-bg-page), 0 10px 25px -4px rgba(0, 0, 0, 0.45);
  object-fit: cover;
  flex-shrink: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  transition: all var(--motion-duration-normal) var(--motion-ease);
}

@media (hover: hover) and (pointer: fine) {
  .hero-avatar:hover {
    transform: scale(1.03);
    box-shadow: 0 0 0 4px var(--color-bg-page), 0 0 25px 2px var(--color-accent-subtle);
  }
}

@media (min-width: 640px) {
  .hero-avatar {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 639px) {
  .hero-panel {
    padding: var(--space-5) var(--space-4);
    gap: var(--space-4);
    text-align: center;
    align-items: center;
    margin-bottom: var(--space-8);
  }

  .hero-avatar {
    width: 110px;
    height: 110px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  }

  .hero-content {
    align-items: center;
    text-align: center;
    width: 100%;
  }

  .hero-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    width: 100%;
  }

  .hero-title {
    font-size: 1.85rem !important;
  }

  .hero-subtitle {
    font-size: var(--font-metadata) !important;
  }

  .hero-lead {
    font-size: 0.975rem !important;
    line-height: 1.55 !important;
  }

  .hero-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: var(--space-2);
    margin-top: var(--space-4);
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 46px;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.page-header {
  margin-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: var(--space-4);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--font-metadata);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background-color: var(--color-accent-subtle);
  color: var(--color-text-accent);
  border: 1px solid var(--color-accent-border);
  box-shadow: 0 0 10px -3px var(--color-accent-subtle);
  max-width: 100%;
  white-space: nowrap;
}

.badge-neutral {
  background-color: var(--color-bg-surface-elevated);
  color: var(--color-text-secondary);
  border-color: var(--color-border-subtle);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--font-metadata);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  text-decoration: none;
  transition: color var(--motion-duration-fast) var(--motion-ease),
              border-color var(--motion-duration-fast) var(--motion-ease),
              background-color var(--motion-duration-fast) var(--motion-ease);
}

@media (hover: hover) and (pointer: fine) {
  span.tag:hover {
    color: var(--color-text-secondary);
    border-color: var(--color-border-strong);
  }
  a.tag:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-interactive);
    background-color: var(--color-bg-surface-hover);
    cursor: pointer;
  }
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background-color: var(--color-bg-code);
  border: 1px solid var(--color-border-subtle);
  white-space: nowrap;
  cursor: default;
  transition: all var(--motion-duration-fast) var(--motion-ease);
}

@media (hover: hover) and (pointer: fine) {
  span.chip:hover {
    border-color: var(--color-border-strong);
    color: var(--color-text-secondary);
    transform: none;
  }
  a.chip:hover {
    border-color: var(--color-accent-border);
    color: var(--color-accent);
    background-color: var(--color-accent-subtle);
    transform: translateY(-1px);
    cursor: pointer;
  }
}

.divider-subtle {
  border: 0;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-8);
  width: 100%;
}

.divider-technical {
  border: 0;
  border-top: 1px dashed var(--color-border-subtle);
  margin-block: var(--space-8);
  width: 100%;
}

:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

button,
.btn,
.badge,
.chip,
.tag,
.card-interactive,
[role="button"] {
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
  transform: none !important;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

/* Accessible Skip Link — WCAG 2.2 AA SC 2.4.1 */
.skip-link {
  position: absolute;
  top: -120px;
  left: var(--space-4);
  background-color: var(--color-accent);
  color: var(--color-text-inverse) !important;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--font-small);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  z-index: 10000;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--motion-duration-fast) var(--motion-ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: var(--space-4);
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: var(--font-small);
}

.site-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
  box-sizing: border-box;
}

.site-footer a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

@media (hover: hover) and (pointer: fine) {
  .site-footer a:hover {
    color: var(--color-accent);
  }
}

@media (max-width: 640px) {
  .site-footer {
    padding-block: var(--space-8);
  }

  .site-footer-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }

  .site-footer-links {
    justify-content: center;
  }
}

details summary {
  cursor: pointer;
  transition: color var(--motion-duration-fast) var(--motion-ease);
}

details[open] summary {
  margin-bottom: var(--space-3);
}

@keyframes scroll-fade-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.js-scroll-animate .scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--motion-duration-slow) var(--motion-ease),
              transform var(--motion-duration-slow) var(--motion-ease);
  will-change: opacity, transform;
}

.js-scroll-animate .scroll-reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

.js-scroll-animate [data-delay="1"]{transition-delay:70ms}.js-scroll-animate [data-delay="2"]{transition-delay:140ms}.js-scroll-animate [data-delay="3"]{transition-delay:210ms}.js-scroll-animate [data-delay="4"]{transition-delay:280ms}

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .scroll-reveal,
    .scroll-driven-auto {
      animation: scroll-fade-up var(--motion-duration-slow) var(--motion-ease) both;
      animation-timeline: view();
      animation-range: entry 5% cover 25%;
    }
  }
}

/* Strict prefers-reduced-motion override */
@media (prefers-reduced-motion: reduce) {
  .scroll-reveal,
  .scroll-driven-auto,
  .js-scroll-animate .scroll-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
    will-change: auto !important;
  }
}

.palette-switcher-bar {
  position: fixed;
  bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  right: var(--space-4);
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-bg-surface-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  max-width: calc(100vw - 2rem);
  box-sizing: border-box;
}

.palette-switcher-bar[hidden] {
  display: none !important;
}

.palette-switcher-title {
  font-family: var(--font-mono);
  font-size: var(--font-metadata);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-right: var(--space-1);
  white-space: nowrap;
}

.palette-options {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.palette-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.35rem 0.65rem;
  min-height: 40px;
  min-width: 44px;
  box-sizing: border-box;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--font-metadata);
  font-weight: 550;
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--motion-duration-fast) var(--motion-ease);
}

.palette-btn:hover {
  background-color: var(--color-bg-surface-hover);
  color: var(--color-text-primary);
}

.palette-btn[aria-pressed="true"] {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  border-color: var(--color-accent-border);
}


.palette-swatch {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  display: inline-block;
  flex-shrink: 0;
}

.palette-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  padding: 0;
  transition: color var(--motion-duration-fast) var(--motion-ease);
}

.palette-close-btn:hover {
  color: var(--color-text-primary);
}

.palette-footer-toggle {
  background: none;
  border: none;
  padding: var(--space-1) var(--space-2);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  transition: color var(--motion-duration-fast) var(--motion-ease);
}

.palette-footer-toggle:hover {
  color: var(--color-accent);
}

@media (max-width: 480px) {
  .palette-switcher-bar {
    left: var(--space-2);
    right: var(--space-2);
    bottom: calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
    width: calc(100% - var(--space-4));
    max-width: calc(100vw - var(--space-4));
    padding: var(--space-1) var(--space-2);
    justify-content: space-between;
  }
  .palette-switcher-title {
    display: none;
  }
  .palette-btn {
    padding: 0.25rem 0.45rem;
    font-size: 0.75rem;
    min-width: auto;
  }
}