:root {
  color-scheme: dark light;
  --bg: #0b0c10;
  --panel: #12141a;
  --soft: #1a1d26;
  --fg: #e6e8ee;
  --muted: #a1a6b3;
  --accent: #7c5cff;
  --accent-2: #00e5ff;
  --radius: 18px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f7fb;
    --panel: #ffffff;
    --soft: #f1f3f9;
    --fg: #0c0e12;
    --muted: #5c6472;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(124, 92, 255, 0.15), transparent 60%),
    radial-gradient(800px 500px at -10% 20%, rgba(0, 229, 255, 0.1), transparent 60%),
    var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  width: min(1100px, 94vw);
  margin: 0 auto;
  padding: 28px 0 10px;
}
main {
  width: min(1100px, 94vw);
  margin: 0 auto;
  flex: 1;
  padding-bottom: 64px;
  display: flex;
  flex-direction: column;
}
[data-section="footer"] {
  padding: 64px 0;
}

[data-section="footer"] .wrap {
  width: min(1100px, 94vw);
  margin: 0 auto;
}

[data-section="footer"] .footer-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
}

[data-section="footer"] .footer-contact h2 {
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 8px;
}

[data-section="footer"] .contact-email {
  margin: 0;
}

[data-section="footer"] .contact-email a {
  font-size: 18px;
  font-weight: 500;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.15s ease;
}

[data-section="footer"] .contact-email a:hover {
  color: var(--accent-2);
}

[data-section="footer"] .back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  background: var(--panel);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

[data-section="footer"] .back-to-top:hover {
  border-color: var(--muted);
  transform: translateY(-1px);
}
nav a,
.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}
nav a:hover,
.breadcrumb a:hover {
  color: var(--fg);
}
.hero {
  background: linear-gradient(180deg, color-mix(in oklab, var(--panel), transparent 10%), color-mix(in oklab, var(--panel), transparent 35%));
  padding: 32px clamp(20px, 5vw, 42px);
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 6vw, 48px);
}
.hero p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 2.4vw, 18px);
}
section {
  margin: 21px 0;
  background: color-mix(in oklab, var(--panel), transparent 20%);
  padding: clamp(20px, 4vw, 36px);
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 75%);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}
section h2 {
  margin-top: 0;
}
section p {
  color: var(--muted);
  line-height: 1.6;
}
.live-demo {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.live-demo p {
  margin: 0;
}
.diagram-stage {
  border-radius: var(--radius);
  overflow: hidden;
  padding: 0;
  background: transparent;
}
.diagram-stage .diagram-root {
  width: 100%;
}
/* Header wrapper — invisible container for editor targeting, with internal bottom spacing */
[data-block-id="header"] {
  padding-bottom: 12px;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 60%);
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
}
.button:hover {
  border-color: color-mix(in oklab, var(--muted), transparent 40%);
}

.related-update-mini {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 60%);
  background: color-mix(in oklab, var(--soft), transparent 25%);
  color: var(--fg);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.related-update-mini:hover {
  border-color: color-mix(in oklab, var(--accent), transparent 35%);
  transform: translateY(-1px);
}

.reference-update-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 120px;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 60%);
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--panel), transparent 10%),
    color-mix(in oklab, var(--soft), transparent 12%)
  );
  color: var(--fg);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.reference-update-card:hover {
  border-color: color-mix(in oklab, var(--accent), transparent 35%);
  transform: translateY(-2px);
}

.reference-update-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.3;
}

.reference-update-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.related-update-invalid {
  opacity: 0.7;
  border-style: dashed;
}

pre {
  background: color-mix(in oklab, var(--panel), transparent 30%);
  padding: 18px;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  font-size: 13px;
  line-height: 1.55;
}
code {
  font-family: "SFMono-Regular", ui-monospace, "SFMono", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
figure {
  margin: 0;
}
figure img {
  max-width: 100%;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.24);
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tag {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 60%);
  color: var(--muted);
}
.breadcrumb {
  width: min(1100px, 94vw);
  margin: 0 auto;
  padding-top: 24px;
  font-size: 14px;
  color: var(--muted);
}
.breadcrumb span {
  color: var(--fg);
}

/* Utility classes used by the interactive diagram component */
.absolute {
  position: absolute;
}
.relative {
  position: relative;
}
.pointer-events-none {
  pointer-events: none;
}
.z-20 {
  z-index: 20;
}
.w-full {
  width: 100%;
}
.flex {
  display: flex;
}
.grid {
  display: grid;
}
.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}
@media (min-width: 768px) {
  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-3 {
  gap: 0.75rem;
}
.p-3 {
  padding: 0.75rem;
}
.p-4 {
  padding: 1rem;
}
.p-5 {
  padding: 1.25rem;
}
.p-6 {
  padding: 1.5rem;
}
.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}
.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}
.py-1 {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}
.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}
.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-4 {
  margin-bottom: 1rem;
}
.mt-4 {
  margin-top: 1rem;
}
.text-sm {
  font-size: 0.875rem;
}
.text-xl {
  font-size: 1.25rem;
  line-height: 1.3;
}
.text-gray-600 {
  color: #4b5563;
}
.text-gray-700 {
  color: #374151;
}
.font-medium {
  font-weight: 500;
}
.font-semibold {
  font-weight: 600;
}
.rounded-xl {
  border-radius: 0.75rem;
}
.rounded-2xl {
  border-radius: 1rem;
}
.border {
  border: 1px solid rgba(148, 163, 184, 0.5);
}
.bg-white {
  background: #ffffff;
  color: #111827;
}
.bg-gray-50 {
  background: #f9fafb;
  color: #111827;
}
.bg-white\/95 {
  background: rgba(255, 255, 255, 0.95);
}
.shadow-sm {
  box-shadow: 0 6px 18px rgba(13, 16, 23, 0.12);
}
.shadow {
  box-shadow: 0 8px 22px rgba(13, 16, 23, 0.16);
}
.shadow-xl {
  box-shadow: 0 22px 46px rgba(13, 16, 23, 0.22);
}
.shadow-2xl {
  box-shadow: 0 32px 70px rgba(13, 16, 23, 0.25);
}
.hover\:shadow-md:hover {
  box-shadow: 0 16px 36px rgba(13, 16, 23, 0.22);
}
.disabled\:opacity-60:disabled {
  opacity: 0.6;
}
.transition-all {
  transition: all 0.25s ease;
}
.select-none {
  user-select: none;
}
.cursor-pointer {
  cursor: pointer;
}
.list-disc {
  list-style: disc;
}
.pl-5 {
  padding-left: 1.25rem;
}
.max-w-\[260px\] {
  max-width: 260px;
}
.max-w-\[1200px\] {
  max-width: 1200px;
}
.text-\[14px\] {
  font-size: 14px;
}
.text-\[12px\] {
  font-size: 12px;
}
.fill-gray-800 {
  fill: #1f2937;
}
.fill-gray-600 {
  fill: #4b5563;
}
.text-gray-800 {
  color: #1f2937;
}
.shadow-xl circle,
.shadow-xl rect {
  transition: inherit;
}

/* ==========================================================================
   Markdown Content Styles
   ========================================================================== */

.markdown-content {
  line-height: 1.7;
}

.markdown-content h1 {
  font-size: clamp(28px, 5vw, 36px);
  margin: 2em 0 0.75em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
}

.markdown-content h1:first-child {
  margin-top: 0;
}

.markdown-content h2 {
  font-size: clamp(22px, 4vw, 28px);
  margin: 1.75em 0 0.6em;
  color: var(--fg);
}

.markdown-content h3 {
  font-size: clamp(18px, 3vw, 22px);
  margin: 1.5em 0 0.5em;
  color: var(--fg);
}

.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  margin: 1.25em 0 0.5em;
  color: var(--fg);
}

.markdown-content p {
  margin: 0 0 1em;
  color: var(--muted);
}

.markdown-content ul,
.markdown-content ol {
  padding-left: 1.5em;
  margin: 0 0 1em;
  color: var(--muted);
}

.markdown-content li {
  margin-bottom: 0.5em;
  line-height: 1.6;
}

.markdown-content li > ul,
.markdown-content li > ol {
  margin-top: 0.5em;
  margin-bottom: 0;
}

.markdown-content a {
  color: var(--accent-2);
  text-decoration: none;
}

.markdown-content a:hover {
  text-decoration: underline;
}

.markdown-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 1em 0;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.markdown-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 0.5em 0 0.5em 1.25em;
  margin: 1em 0;
  background: color-mix(in oklab, var(--soft), transparent 50%);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--muted);
}

.markdown-content blockquote p:last-child {
  margin-bottom: 0;
}

.markdown-content code {
  background: color-mix(in oklab, var(--soft), transparent 30%);
  padding: 0.2em 0.4em;
  border-radius: 6px;
  font-size: 0.9em;
  color: var(--accent-2);
}

.markdown-content pre {
  background: color-mix(in oklab, var(--panel), #000 20%);
  padding: 1.25em;
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  margin: 1em 0;
}

.markdown-content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.875em;
  color: var(--fg);
  line-height: 1.6;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
  font-size: 0.95em;
}

.markdown-content th,
.markdown-content td {
  padding: 0.75em 1em;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  text-align: left;
}

.markdown-content th {
  background: color-mix(in oklab, var(--soft), transparent 50%);
  font-weight: 600;
  color: var(--fg);
}

.markdown-content td {
  color: var(--muted);
}

.markdown-content hr {
  border: none;
  border-top: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  margin: 2em 0;
}

/* ==========================================================================
   PDF Embed Styles
   ========================================================================== */

.pdf-embed {
  width: 100%;
  height: 80vh;
  min-height: 500px;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  background: var(--panel);
}

.pdf-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 300px;
  gap: 16px;
  color: var(--muted);
}

/* ==========================================================================
   Tag Row Standalone (for dynamic pages)
   ========================================================================== */

.tag-row.standalone {
  background: none;
  padding: 0;
  border: none;
  box-shadow: none;
}

/* ==========================================================================
   Block Content System
   ========================================================================== */

/* --- Group block: children flow inside one card without card styling --- */
.block-group {
  display: flex;
  flex-direction: column;
}

.block-group > .block-text,
.block-group > .block-image,
.block-group > .block-video,
.block-group > .block-gallery,
.block-group > .block-pdf,
.block-group > .block-readme {
  margin: 12px 0;
}

/* --- Video embed: responsive 16:9 --- */
.video-embed-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
}

.video-embed-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.block-video video {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
}

/* --- Gallery grid --- */
.gallery-grid {
  display: grid;
  gap: 16px;
}

.gallery-cols-1 { grid-template-columns: 1fr; }
.gallery-cols-2 { grid-template-columns: repeat(2, 1fr); }
.gallery-cols-3 { grid-template-columns: repeat(3, 1fr); }

.gallery-grid figure {
  margin: 0;
}

.gallery-grid img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

@media (max-width: 640px) {
  .gallery-cols-2,
  .gallery-cols-3 {
    grid-template-columns: 1fr;
  }
}

/* --- Block captions --- */
.block-image figcaption,
.block-video figcaption,
.block-gallery figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* --- Block image: full width --- */
.block-image figure img {
  width: 100%;
  height: auto;
}

/* ==========================================================================
   Code Block
   ========================================================================== */

.block-code figure {
  margin: 0;
}

.code-block-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: color-mix(in oklab, var(--panel), #000 25%);
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: 13px;
}

.code-block-title {
  color: var(--fg);
  font-family: "SFMono-Regular", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-weight: 500;
}

.code-block-lang {
  color: var(--muted);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--muted), transparent 85%);
}

.code-copy-btn {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 60%);
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.code-copy-btn:hover {
  color: var(--fg);
  border-color: var(--muted);
}

.code-block-pre {
  margin: 0;
  border-radius: 0 0 var(--radius) var(--radius);
}

.code-block-header + .code-block-pre {
  border-top: none;
}

/* No header → full rounded corners */
.block-code figure > .code-block-pre:first-child {
  border-radius: var(--radius);
}

.block-code figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ==========================================================================
   Mermaid Block
   ========================================================================== */

.block-mermaid figure {
  margin: 0;
}

.block-mermaid .mermaid-code {
  display: none;
}

.block-mermaid .mermaid-diagram {
  display: flex;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
  overflow-x: auto;
}

.block-mermaid .mermaid-diagram svg {
  max-width: 100%;
  height: auto;
}

.block-mermaid .mermaid-diagram .error {
  color: var(--accent);
  font-size: 14px;
}

.block-mermaid figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ==========================================================================
   Terminal Block
   ========================================================================== */

.terminal-window {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.24);
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: color-mix(in oklab, var(--panel), #000 20%);
  border-bottom: 1px solid color-mix(in oklab, var(--muted), transparent 80%);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red    { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green  { background: #28c840; }

.terminal-body {
  margin: 0;
  padding: 18px;
  background: color-mix(in oklab, var(--panel), #000 30%);
  border: none;
  border-radius: 0;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
}

.terminal-prompt {
  color: var(--accent);
  user-select: none;
}

.terminal-command {
  color: var(--fg);
  font-weight: 500;
}

.terminal-output {
  color: var(--muted);
}

.block-terminal figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ==========================================================================
   Comparison Block
   ========================================================================== */

.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.comparison-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.comparison-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-align: center;
}

.comparison-side img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid color-mix(in oklab, var(--muted), transparent 70%);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  object-fit: cover;
}

@media (max-width: 640px) {
  .comparison-container {
    grid-template-columns: 1fr;
  }
}

.block-comparison figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

/* ==========================================================================
   Graph Block
   ========================================================================== */

.graph-container {
  position: relative;
  padding: 8px;
}

.graph-container canvas {
  width: 100% !important;
  max-height: 400px;
}

.block-graph figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.detail-error {
  text-align: center;
}

.detail-error-actions {
  justify-content: center;
}