@layer pages {
  body[data-route="elka-0"] {
    --elka-bg: #07090f;
    --elka-surface: #0f1422;
    --elka-surface-2: #141b2e;
    --elka-surface-3: #18213a;
    --elka-border: rgba(114, 158, 255, 0.25);
    --elka-border-strong: rgba(114, 158, 255, 0.42);
    --elka-accent: #48a7ff;
    --elka-accent-2: #3aeecd;
    --elka-accent-soft: rgba(72, 167, 255, 0.15);
    --elka-accent-softer: rgba(72, 167, 255, 0.08);
    --elka-text: #f7f9ff;
    --elka-text-soft: #b8c2d9;
    --elka-text-muted: #8793ad;
    --elka-grid: rgba(72, 167, 255, 0.08);

    background:
      linear-gradient(var(--elka-grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--elka-grid) 1px, transparent 1px),
      radial-gradient(circle at 20% 10%, rgba(72, 167, 255, 0.2), transparent 32%),
      radial-gradient(circle at 80% 0%, rgba(58, 238, 205, 0.14), transparent 24%),
      var(--elka-bg);
    background-size: 44px 44px, 44px 44px, auto, auto, auto;
    background-attachment: fixed;
  }

  body[data-route="elka-0"] main {
    padding-top: var(--header-height);
  }

  .elka-main {
    color: var(--elka-text);
    padding-bottom: 4rem;
    position: relative;
  }

  .elka-section {
    width: min(100% - 24px, 1100px);
    margin: 0 auto;
    padding: 1rem 0 2.2rem;
    scroll-margin-top: calc(var(--header-height) + 24px);
  }

  .elka-surface {
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, rgba(18, 25, 44, 0.98), rgba(9, 13, 25, 0.97));
    border: 1px solid var(--elka-border);
    border-radius: 18px;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.34);
    padding: clamp(1rem, 2vw, 1.8rem);
  }

  .elka-surface::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
      linear-gradient(135deg, rgba(72, 167, 255, 0.12), transparent 32%),
      radial-gradient(circle at top right, rgba(58, 238, 205, 0.1), transparent 28%);
    opacity: 0.75;
  }

  .elka-surface>* {
    position: relative;
    z-index: 1;
  }

  .elka-surface--hero {
    padding: clamp(1.2rem, 4vw, 3rem);
  }

  .elka-hero {
    min-height: 62dvh;
    display: grid;
    align-items: center;
    padding-top: 1.2rem;
  }

  .elka-eyebrow,
  .elka-kicker {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: #9ac9ff;
    margin: 0 0 0.7rem;
  }

  .elka-kicker {
    color: var(--elka-accent-2);
  }

  .elka-title {
    font-size: clamp(2.6rem, 8vw, 6rem);
    line-height: 0.96;
    margin: 0;
    letter-spacing: -0.06em;
  }

  .elka-title span {
    display: block;
    font-size: clamp(1.15rem, 3.2vw, 2.3rem);
    letter-spacing: -0.03em;
    color: #dbe7ff;
    margin-top: 0.4rem;
  }

  .elka-subtitle {
    font-size: clamp(1rem, 2.6vw, 1.55rem);
    color: #dbe7ff;
    margin: 0.85rem 0 1rem;
  }

  .elka-lead {
    max-width: 82ch;
    color: var(--elka-text-soft);
    margin: 0;
  }

  .elka-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1.2rem;
  }

  .elka-cta--center {
    justify-content: center;
  }

  .btn.btn--elka {
    background: var(--elka-accent);
    border-color: transparent;
    color: #031428;
    font-weight: 800;
  }

  .btn.btn--elka:hover,
  .btn.btn--elka:focus-visible {
    background: #8bc7ff;
    color: #031428;
  }

  .btn.secondary.btn--elka {
    color: #e7f1ff;
    border-color: var(--elka-border);
    background: transparent;
  }

  .btn.secondary.btn--elka:hover,
  .btn.secondary.btn--elka:focus-visible {
    background: var(--elka-accent-soft);
    border-color: var(--elka-border-strong);
  }

  .elka-section h2 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.2rem, 2.7vw, 2rem);
    letter-spacing: -0.025em;
  }

  .elka-section h3 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
  }

  .elka-intro {
    color: var(--elka-text-soft);
    margin: 0 0 1rem;
    max-width: 82ch;
  }

  .elka-docnav {
    width: min(100% - 24px, 1100px);
    margin: 1rem auto 0;
    padding: 0.65rem;
    display: flex;
    gap: 0.45rem;
    overflow-x: auto;
    position: sticky;
    top: calc(var(--header-height) + 8px);
    z-index: 20;
    border: 1px solid var(--elka-border);
    border-radius: 999px;
    background: rgba(7, 9, 15, 0.76);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  }

  .elka-docnav a {
    white-space: nowrap;
    color: var(--elka-text-soft);
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.45rem 0.75rem;
    font-size: 0.9rem;
  }

  .elka-docnav a:hover,
  .elka-docnav a:focus-visible,
  .elka-docnav a.is-active {
    color: #f7fbff;
    background: var(--elka-accent-soft);
    border-color: var(--elka-border);
  }

  .elka-hero-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.7rem;
    margin: 1.35rem 0 0;
  }

  .elka-hero-metrics div,
  .spec-grid div {
    background: rgba(20, 27, 46, 0.72);
    border: 1px solid var(--elka-border);
    border-radius: 14px;
    padding: 0.9rem;
  }

  .elka-hero-metrics dt,
  .spec-grid dt {
    color: var(--elka-text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 0.25rem;
  }

  .elka-hero-metrics dd,
  .spec-grid dd {
    color: #f7f9ff;
    margin: 0;
    font-weight: 750;
  }

  .stack-flow {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 0.65rem;
    align-items: stretch;
  }

  .stack-node {
    background: var(--elka-surface-2);
    border: 1px solid var(--elka-border);
    border-radius: 14px;
    padding: 1rem;
    min-height: 100%;
  }

  .stack-node strong {
    display: block;
    color: #f7fbff;
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
  }

  .stack-node span {
    color: var(--elka-text-soft);
  }

  .stack-arrow {
    display: grid;
    place-items: center;
    text-align: center;
    color: #7fbaff;
    font-weight: 800;
    font-size: 1.2rem;
  }

  .elka-list,
  .elka-grid,
  .elka-flow,
  .roadmap,
  .eval-grid,
  .deployment-grid,
  .use-grid,
  .dev-grid,
  .oss-grid,
  .spec-grid,
  .architecture-panels {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.7rem;
  }

  .elka-list li,
  .elka-grid li,
  .eval-grid li,
  .deployment-grid li,
  .use-grid li,
  .dev-grid li,
  .oss-grid li,
  .roadmap li,
  .architecture-panels article {
    background: var(--elka-surface-2);
    border: 1px solid var(--elka-border);
    border-radius: 12px;
    padding: 0.82rem 0.9rem;
  }

  .elka-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .use-grid,
  .deployment-grid,
  .dev-grid,
  .oss-grid,
  .eval-grid,
  .architecture-panels,
  .spec-grid {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  }

  .elka-grid li strong,
  .use-grid li strong,
  .deployment-grid li strong,
  .oss-grid li strong {
    display: block;
    color: #f7fbff;
    margin-bottom: 0.28rem;
  }

  .elka-grid li span,
  .architecture-panels p {
    display: block;
    color: var(--elka-text-soft);
    margin: 0;
  }

  .elka-flow {
    grid-template-columns: repeat(11, minmax(0, 1fr));
    align-items: center;
    margin-bottom: 1rem;
  }

  .flow-step {
    text-align: center;
    background: var(--elka-surface-2);
    border: 1px solid var(--elka-border);
    border-radius: 12px;
    padding: 0.82rem 0.9rem;
    min-height: 100%;
    display: grid;
    place-items: center;
    font-size: 0.9rem;
  }

  .flow-arrow {
    text-align: center;
    color: #83b9ff;
    font-size: 1.3rem;
    font-weight: 800;
  }

  .roadmap li {
    display: flex;
    gap: 0.65rem;
    align-items: baseline;
  }

  .roadmap code {
    color: #9dd4ff;
    font-size: 0.9rem;
    min-width: 3.5rem;
  }

  .status-chip {
    display: inline-block;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--elka-border);
    background: rgba(144, 193, 255, 0.08);
    font-size: 0.8rem;
    margin-top: 0.45rem;
    color: #dcecff;
  }

  .code-panel {
    margin-top: 1rem;
    border: 1px solid var(--elka-border);
    border-radius: 14px;
    overflow: hidden;
    background: #07101e;
  }

  .code-panel__header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 0.7rem 0.85rem;
    border-bottom: 1px solid var(--elka-border);
    background: rgba(72, 167, 255, 0.08);
    color: #dcecff;
    font-weight: 800;
  }

  .copy-btn {
    border: 1px solid var(--elka-border);
    background: transparent;
    color: #dcecff;
    border-radius: 999px;
    padding: 0.35rem 0.7rem;
    cursor: var(--cursor-pointer);
  }

  .copy-btn:hover,
  .copy-btn:focus-visible {
    background: var(--elka-accent-soft);
    outline: none;
  }

  .code-panel pre {
    margin: 0;
    overflow-x: auto;
    padding: 0.95rem;
  }

  .code-panel code {
    color: #bfe2ff;
    white-space: pre;
  }

  .final-cta {
    text-align: center;
    background: linear-gradient(130deg, rgba(72, 167, 255, 0.22), rgba(14, 20, 35, 0.95));
  }

  .final-cta h2 {
    max-width: 760px;
    margin-inline: auto;
  }

  @media (max-width: 1100px) {
    .elka-flow {
      grid-template-columns: 1fr;
    }

    .flow-arrow {
      transform: rotate(90deg);
    }
  }

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

    .stack-arrow {
      transform: rotate(90deg);
    }

    .elka-hero-metrics {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .elka-docnav {
      border-radius: 18px;
    }
  }

  @media (max-width: 560px) {
    .elka-section {
      width: min(100% - 18px, 1100px);
    }

    .elka-hero-metrics {
      grid-template-columns: 1fr;
    }

    .elka-title {
      letter-spacing: -0.04em;
    }
  }

  @media (prefers-reduced-motion: reduce) {

    body[data-route="elka-0"] *,
    body[data-route="elka-0"] *::before,
    body[data-route="elka-0"] *::after {
      transition: none !important;
      scroll-behavior: auto !important;
    }
  }
}