@layer pages {
  /* =========================================================================
     Document annotations

     The graphic language of the whole site: bounding boxes, table rules,
     reading-order flows and chunk brackets drawn over a real page.
     ========================================================================= */

  .page-svg {
    width: 100%;
    height: auto;
    display: block;
    background: var(--sheet-bg);
  }

  .anno {
    fill: none;
    stroke-width: 1.5;
  }

  /* Detection box — brand orange, which is used here for emphasis rather than
     for text, so the vivid hue is safe in both themes. */
  .anno--box {
    stroke: var(--brand-orange);
    fill: color-mix(in srgb, var(--brand-orange) 10%, transparent);
  }

  /* Table rules and cell divisions. */
  .anno--rule {
    stroke: var(--brand-orange);
    stroke-width: 1;
    stroke-dasharray: 4 3;
    opacity: 0.9;
  }

  /* Chunk brackets and secondary regions. */
  .anno--chunk {
    stroke: var(--support-cyan);
    stroke-width: 1.5;
    fill: color-mix(in srgb, var(--support-cyan) 8%, transparent);
  }

  /* Reading-order flow. */
  .anno--flow {
    stroke: var(--brand-orange);
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .anno-marker {
    fill: var(--brand-orange);
    stroke: none;
  }

  /* =========================================================================
     Hero
     ========================================================================= */

  .hero {
    position: relative;
    overflow: hidden;
    padding: 5rem 0 4rem;
  }

  .hero::before {
    content: "";
    position: absolute;
    top: -180px;
    left: -140px;
    width: 620px;
    height: 620px;
    pointer-events: none;
    background: radial-gradient(circle, var(--hero-glow) 0%, transparent 70%);
  }

  .hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 0.85fr;
    align-items: center;
    gap: 3.5rem;
  }

  .hero-text {
    min-width: 0;
  }

  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
  }

  .hero-eyebrow::before {
    content: "";
    display: inline-block;
    width: 20px;
    height: 2px;
    background: var(--accent);
  }

  .hero-title {
    max-width: 16ch;
    margin-bottom: 1.5rem;
    font-size: clamp(2.75rem, 5.5vw, 4.25rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
  }

  .hero-accent {
    color: var(--accent);
  }

  .hero-subtitle {
    max-width: 54ch;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 1.7;
    color: var(--text-secondary);
  }

  .hero-subtitle--muted {
    font-size: 1rem;
    color: var(--text-tertiary);
    margin-bottom: 2rem;
  }

  .hero-install {
    margin-bottom: 1.25rem;
  }

  .hero-actions {
    margin-bottom: 2rem;
  }

  .hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
  }

  .hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    color: var(--text-tertiary);
  }

  .hero-chip::before {
    content: "";
    width: 4px;
    height: 4px;
    background: var(--accent);
    flex-shrink: 0;
  }

  a.hero-chip:hover {
    color: var(--text-primary);
  }

  /* -- Hero visual --------------------------------------------------------- */

  .hero-visual {
    position: relative;
    min-width: 0;
  }

  .hero-sheet {
    position: relative;
    border: 1px solid var(--border-accent);
    border-radius: var(--radius);
    background: var(--sheet-bg);
    box-shadow: var(--sheet-shadow);
    overflow: hidden;
    /* The page is a fixed aspect ratio, so stacking layers absolutely cannot
       collapse the box or shift the page during the sequence. */
    aspect-ratio: 914 / 1184;
    max-height: 62vh;
    margin-inline: auto;
  }

  .hero-layer {
    position: absolute;
    inset: 0;
  }

  /* The stacked layers must not paint their own sheet: an opaque background on
     an upper layer would cover the page image rendered by the bottom one. The
     sheet itself owns that background. */
  .hero-layer .page-svg {
    background: none;
  }

  /* Only the annotation group fades; the page image underneath is shared, so
     there is no cross-fade flicker between stages. */
  .hero-layer .page-svg > g {
    opacity: 0;
    transition: opacity var(--dur-slow) ease;
  }

  .hero-layer[data-active="true"] .page-svg > g {
    opacity: 1;
  }

  .hero-layer:not(:first-child) .page-svg image {
    visibility: hidden;
  }

  .hero-output {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    background: var(--code-bg);
    border-top: 1px solid var(--code-border);
    transform: translateY(101%);
    transition: transform var(--dur-slow) cubic-bezier(0.2, 0, 0.2, 1);
  }

  .hero-visual[data-stage-active="output"] .hero-output {
    transform: translateY(0);
  }

  .hero-output-head {
    padding: 0.4rem 0.85rem;
    background: var(--code-header-bg);
    border-bottom: 1px solid var(--code-border);
  }

  .hero-output pre {
    padding: 0.85rem;
    overflow-x: auto;
  }

  .hero-output code {
    font-size: 0.68rem;
    line-height: 1.6;
    color: var(--code-color);
  }

  .hero-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.85rem;
  }

  .stage-dots {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .stage-dot {
    width: 22px;
    height: 3px;
    background: var(--border-accent);
    transition: background var(--dur-fast);
    cursor: pointer;
  }

  .stage-dot:hover {
    background: var(--accent);
  }

  .stage-dot[aria-current="true"] {
    background: var(--accent);
  }

  .stage-pause {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    transition: color var(--dur-fast);
  }

  .stage-pause:hover {
    color: var(--accent);
  }

  @media (max-width: 900px) {
    .hero-inner {
      grid-template-columns: 1fr;
      gap: 2.5rem;
    }

    .hero-sheet {
      max-height: none;
      max-width: 420px;
    }
  }

  /* =========================================================================
     Proof strip
     ========================================================================= */

  .proof-strip {
    padding: 1.5rem 0;
  }

  .proof-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
  }

  .proof-stats {
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .proof-mark {
    display: flex;
    color: var(--text-tertiary);
  }

  .proof-mark svg {
    width: 20px;
    height: 20px;
  }

  .stat {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
  }

  .stat-value {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    /* Reserve space so the live count cannot reflow the strip on arrival. */
    min-height: 1.6rem;
    transition: color var(--dur-fast);
  }

  a.stat:hover .stat-value {
    color: var(--accent);
  }

  .stat-label {
    font-size: 0.72rem;
    color: var(--text-tertiary);
  }

  .proof-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .proof-facts strong {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .proof-facts span {
    font-size: 0.72rem;
    color: var(--text-tertiary);
  }

  .proof-facts a:hover strong {
    color: var(--accent);
  }

  /* =========================================================================
     Document demo
     ========================================================================= */

  .demo {
    margin-top: 2.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
  }

  .demo .tablist {
    background: var(--bg-secondary);
  }

  .demo-panel[hidden] {
    display: none;
  }

  .demo-body {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 0;
  }

  .demo-page {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
  }

  .demo-page .page-svg {
    border: 1px solid var(--border-accent);
    border-radius: var(--radius);
    box-shadow: var(--sheet-shadow);
  }

  .demo-side {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 2rem;
    min-width: 0;
  }

  .demo-title {
    font-size: 1.15rem;
    font-weight: 600;
  }

  .demo-text {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--text-secondary);
  }

  @media (max-width: 900px) {
    .demo-body {
      grid-template-columns: 1fr;
    }

    .demo-page {
      border-right: none;
      border-bottom: 1px solid var(--border);
    }
  }

  /* -- Provenance ---------------------------------------------------------- */

  .provenance {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    margin-top: 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .provenance > div {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .provenance dt {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
  }

  .provenance dd {
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .provenance dd a {
    color: var(--accent);
  }

  .provenance dd a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
  }

  .provenance code {
    font-size: 0.75rem;
    color: var(--text-primary);
    word-break: break-all;
  }

  .provenance-note {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-tertiary);
  }

  /* =========================================================================
     Mode / application matrix
     ========================================================================= */

  .matrix {
    display: grid;
    grid-template-columns: minmax(120px, 0.5fr) 1fr 1fr;
    gap: 1px;
    margin-top: 2.5rem;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .matrix > * {
    background: var(--bg-primary);
  }

  .matrix-corner {
    background: var(--bg-secondary);
  }

  .matrix-col-head,
  .matrix-row-head {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
  }

  .matrix-row-head {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.3rem;
  }

  .matrix-row-head-sub {
    font-weight: 400;
    font-size: 0.66rem;
    letter-spacing: 0.02em;
    text-transform: none;
    color: var(--text-tertiary);
  }

  .matrix-cell {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.75rem;
    transition: background var(--dur-fast);
  }

  .matrix-cell:hover {
    background: var(--bg-card-hover);
  }

  .matrix-cell-title {
    font-size: 1rem;
    font-weight: 600;
  }

  .matrix-cell-body {
    flex: 1;
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text-secondary);
  }

  .matrix-cell-code {
    align-self: flex-start;
    padding: 0.3rem 0.5rem;
    font-size: 0.72rem;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    max-width: 100%;
    overflow-x: auto;
  }

  @media (max-width: 768px) {
    .matrix {
      grid-template-columns: 1fr;
    }

    .matrix-corner {
      display: none;
    }

    /* Column headers stop meaning anything once the grid is a single column;
       each cell keeps its row header instead. */
    .matrix-col-head {
      display: none;
    }
  }

  /* =========================================================================
     Quickstart
     ========================================================================= */

  .quickstart {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 3rem;
    align-items: start;
  }

  .quickstart-intro .section-lede {
    margin-top: 0;
    margin-bottom: 1.5rem;
  }

  .quickstart-note {
    margin-top: 1rem;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-tertiary);
  }

  .quickstart-demo {
    min-width: 0;
  }

  .quickstart-panel[hidden] {
    display: none;
  }

  .quickstart-panel {
    padding-top: 1.5rem;
  }

  .quickstart-foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.85rem;
  }

  .quickstart-hint {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
  }

  @media (max-width: 900px) {
    .quickstart {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  }

  /* =========================================================================
     Deployment continuum
     ========================================================================= */

  .continuum {
    margin-top: 2.5rem;
  }

  .continuum-stage {
    display: grid;
    grid-template-columns: 48px 1fr 1.1fr;
    gap: 2rem;
    padding-bottom: 2.5rem;
  }

  .continuum-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }

  .continuum-index {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    border: 1px solid var(--accent-line);
    background: var(--accent-soft);
    border-radius: 50%;
  }

  .continuum-line {
    flex: 1;
    width: 1px;
    background: var(--border-accent);
  }

  .continuum-stage:last-child .continuum-line {
    display: none;
  }

  .continuum-content {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    align-items: flex-start;
  }

  .continuum-name {
    font-size: 1.25rem;
    font-weight: 600;
  }

  .continuum-goal {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-primary);
  }

  .continuum-experience {
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-secondary);
  }

  .continuum-code {
    min-width: 0;
  }

  @media (max-width: 900px) {
    .continuum-stage {
      grid-template-columns: 32px 1fr;
      gap: 1.25rem;
    }

    .continuum-index {
      width: 32px;
      height: 32px;
    }

    .continuum-code {
      grid-column: 2;
    }
  }

  /* -- Parity table -------------------------------------------------------- */

  .parity {
    margin-top: 1.5rem;
  }

  .parity-title {
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
  }

  .table-scroll {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
  }

  .data-table {
    width: 100%;
    font-size: 0.85rem;
    border-collapse: collapse;
  }

  .data-table th,
  .data-table td {
    padding: 0.85rem 1rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }

  .data-table thead th {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
  }

  .data-table tbody th {
    font-weight: 600;
    color: var(--text-primary);
  }

  .data-table td {
    color: var(--text-secondary);
  }

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

  .data-table tbody tr:hover th,
  .data-table tbody tr:hover td {
    background: var(--bg-card);
  }

  .parity-promise {
    color: var(--accent) !important;
  }

  .cell-yes {
    color: var(--support-green);
    font-weight: 600;
  }

  .cell-no {
    color: var(--text-tertiary);
  }

  /* =========================================================================
     Use cases
     ========================================================================= */

  .usecases {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .usecase {
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border);
  }

  .usecase-head {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    margin-bottom: 2rem;
  }

  .usecase-index {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    padding-top: 0.35rem;
  }

  .usecase-name {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 0.4rem;
  }

  .usecase-headline {
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
  }

  .usecase-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
  }

  .usecase-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .usecase-block p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--text-secondary);
  }

  .usecase-label {
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
  }

  .usecase-recipe {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    min-width: 0;
  }

  @media (max-width: 900px) {
    .usecase-body {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  }

  /* =========================================================================
     Run routes
     ========================================================================= */

  .routes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .route {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 1.75rem;
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    transition: background var(--dur-fast);
  }

  .route:hover {
    background: var(--bg-card-hover);
  }

  .route-name {
    font-size: 0.95rem;
    font-weight: 600;
  }

  .route-best {
    flex: 1;
    font-size: 0.82rem;
    line-height: 1.65;
    color: var(--text-secondary);
  }

  .route-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    transition: gap var(--dur-fast);
  }

  .route:hover .route-cta {
    gap: 0.6rem;
  }

  /* =========================================================================
     Ecosystem
     ========================================================================= */

  .ecosystem-group {
    gap: 1rem;
  }

  .ecosystem-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .ecosystem-list a {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition:
      color var(--dur-fast),
      border-color var(--dur-fast);
  }

  .ecosystem-list a:hover {
    color: var(--accent);
    border-color: var(--accent-line);
  }

  /* =========================================================================
     Final CTA
     ========================================================================= */

  .final-cta-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    max-width: 760px;
    text-align: center;
  }

  .final-cta-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
  }

  .final-cta-body {
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.75;
    color: var(--text-secondary);
  }

  .final-cta-actions {
    justify-content: center;
  }
}