:root {
  --elx-bg: #0a0e14;
  --elx-surface: #121923;
  --elx-panel: #172130;
  --elx-code-bg: #070a0f;
  --elx-border: #253347;
  --elx-border-strong: #364963;
  --elx-amber: #f59e0b;
  --elx-amber-bright: #fbbf24;
  --elx-amber-soft: rgba(245, 158, 11, 0.14);
  --elx-teal: #14b8a6;
  --elx-teal-bright: #2dd4bf;
  --elx-teal-soft: rgba(20, 184, 166, 0.14);
  --elx-danger: #f87171;
  --elx-text: #f1f5f9;
  --elx-muted: #94a3b8;
  --elx-sans: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  --elx-mono: 'JetBrains Mono', 'SFMono-Regular', ui-monospace, Menlo, Monaco, Consolas, monospace;
  --elx-radius: 10px;
  --elx-maxw: 1280px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--elx-bg);
  color: var(--elx-text);
  font-family: var(--elx-sans);
  line-height: 1.62;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--elx-amber-bright);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code, pre, kbd, output {
  font-family: var(--elx-mono);
}

/* Topbar & Navigation */
.elx-topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(10, 14, 20, 0.95);
  border-bottom: 1px solid var(--elx-border);
  backdrop-filter: blur(8px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem 1.25rem;
  padding: 0.75rem clamp(1rem, 3vw, 2.25rem);
}

.elx-brand-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.elx-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--elx-text);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.elx-brand-badge {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #121923, #1e293b);
  border: 1.5px solid var(--elx-amber);
  color: var(--elx-amber-bright);
  font-family: var(--elx-mono);
  font-size: 0.82rem;
  font-weight: 800;
}

.elx-brand-tag {
  font-family: var(--elx-mono);
  font-size: 0.72rem;
  color: var(--elx-teal-bright);
  background: var(--elx-teal-soft);
  border: 1px solid rgba(45, 212, 191, 0.3);
  padding: 0.16rem 0.5rem;
  border-radius: 999px;
}

.elx-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.95rem;
}

.elx-nav a {
  color: var(--elx-muted);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}

.elx-nav a:hover,
.elx-nav a[aria-current="page"] {
  color: var(--elx-text);
  background: var(--elx-surface);
  text-decoration: none;
}

.elx-nav a.elx-lang-switch {
  font-family: var(--elx-mono);
  font-size: 0.78rem;
  color: var(--elx-amber-bright);
  border: 1px solid rgba(245, 158, 11, 0.45);
  background: var(--elx-amber-soft);
}

/* Visible Top-of-Page Affiliate Disclosure Bar */
.elx-disclosure-bar {
  background: #0f1621;
  border-bottom: 1px solid var(--elx-border);
  padding: 0.52rem clamp(1rem, 3vw, 2.25rem);
}

.elx-disclosure-bar p {
  max-width: var(--elx-maxw);
  margin: 0 auto;
  font-size: 0.81rem;
  color: var(--elx-muted);
}

.elx-disclosure-bar a {
  color: var(--elx-amber-bright);
  font-weight: 600;
  text-decoration: underline;
}

/* Main Studio Container */
.elx-studio {
  max-width: var(--elx-maxw);
  margin: 0 auto;
  padding: 1.65rem clamp(1rem, 3vw, 2.25rem) 4.5rem;
}

.elx-kicker {
  display: inline-block;
  font-family: var(--elx-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--elx-amber-bright);
  background: var(--elx-amber-soft);
  border: 1px solid rgba(245, 158, 11, 0.35);
  padding: 0.2rem 0.6rem;
  border-radius: 5px;
  margin-bottom: 0.65rem;
}

.elx-hero {
  background: linear-gradient(160deg, var(--elx-surface) 0%, #0e1520 100%);
  border: 1px solid var(--elx-border);
  border-left: 4px solid var(--elx-amber);
  border-radius: var(--elx-radius);
  padding: clamp(1.25rem, 2.5vw, 1.9rem);
  margin-bottom: 1.5rem;
}

.elx-hero h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.55rem, 2.8vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--elx-text);
}

.elx-hero p {
  margin: 0.45rem 0;
  color: #cbd5e1;
  max-width: 82ch;
}

.elx-hero-pills {
  list-style: none;
  padding: 0;
  margin: 0.95rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.elx-hero-pills li {
  font-family: var(--elx-mono);
  font-size: 0.77rem;
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  color: var(--elx-teal-bright);
  padding: 0.25rem 0.62rem;
  border-radius: 6px;
}

/* LF5 Split-Pane Config Generator & Deterministic Decision Tree */
.elx-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  gap: 1.35rem;
  align-items: start;
  margin-bottom: 2.25rem;
}

@media (max-width: 980px) {
  .elx-split {
    grid-template-columns: 1fr;
  }
}

.elx-controls {
  background: var(--elx-surface);
  border: 1px solid var(--elx-border);
  border-radius: var(--elx-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.elx-fieldset {
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  padding: 0.85rem 0.95rem 0.95rem;
  margin: 0;
  background: rgba(7, 10, 15, 0.45);
}

.elx-fieldset legend {
  font-family: var(--elx-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--elx-amber-bright);
  padding: 0 0.4rem;
  letter-spacing: 0.03em;
}

.elx-radio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.55rem;
}

.elx-radio-card {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.58rem 0.68rem;
  border: 1px solid var(--elx-border);
  border-radius: 7px;
  background: var(--elx-surface);
  cursor: pointer;
  font-size: 0.85rem;
}

.elx-radio-card:hover {
  border-color: var(--elx-amber);
}

.elx-radio-card input {
  accent-color: var(--elx-amber);
  margin-top: 0.22rem;
}

.elx-radio-card strong {
  display: block;
  color: var(--elx-text);
  font-size: 0.85rem;
}

.elx-radio-card small {
  display: block;
  color: var(--elx-muted);
  font-size: 0.75rem;
  line-height: 1.35;
}

.elx-range-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
}

.elx-range-row label {
  font-size: 0.86rem;
  font-weight: 600;
}

.elx-range-badge {
  font-family: var(--elx-mono);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--elx-amber-bright);
  background: var(--elx-amber-soft);
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 0.15rem 0.58rem;
  border-radius: 6px;
}

.elx-range-input {
  width: 100%;
  accent-color: var(--elx-amber);
  cursor: pointer;
}

.elx-preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.elx-preset-btn {
  font-family: var(--elx-mono);
  font-size: 0.75rem;
  color: var(--elx-muted);
  background: var(--elx-surface);
  border: 1px solid var(--elx-border);
  border-radius: 5px;
  padding: 0.24rem 0.52rem;
  cursor: pointer;
}

.elx-preset-btn:hover,
.elx-preset-btn.is-active {
  color: var(--elx-bg);
  background: var(--elx-amber);
  border-color: var(--elx-amber);
  font-weight: 700;
}

.elx-inline-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.75rem;
}

.elx-select-wrap label {
  display: block;
  font-size: 0.8rem;
  color: var(--elx-muted);
  margin-bottom: 0.3rem;
}

.elx-select {
  width: 100%;
  background: var(--elx-surface);
  color: var(--elx-text);
  border: 1px solid var(--elx-border-strong);
  border-radius: 6px;
  padding: 0.48rem 0.6rem;
  font-family: var(--elx-mono);
  font-size: 0.84rem;
}

/* Deterministic IF/ELSE Decision Tree */
.elx-tree-box {
  border-top: 1px solid var(--elx-border);
  padding-top: 0.9rem;
}

.elx-tree-box h2 {
  font-size: 0.96rem;
  margin: 0 0 0.6rem;
  color: var(--elx-teal-bright);
  font-family: var(--elx-mono);
}

.elx-decision-path {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.elx-decision-path li {
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-left: 3px solid var(--elx-teal);
  border-radius: 7px;
  padding: 0.58rem 0.75rem;
  font-size: 0.82rem;
}

.elx-decision-path li[data-rule="oops-cap-31g"],
.elx-decision-path li[data-rule="ram-warning"] {
  border-left-color: var(--elx-amber);
}

.elx-decision-path li strong {
  display: block;
  font-family: var(--elx-mono);
  font-size: 0.77rem;
  color: var(--elx-amber-bright);
  margin-bottom: 0.18rem;
}

.elx-decision-path li span {
  display: block;
  color: #cbd5e1;
}

/* Right Pane: Live Config Preview & Telemetry */
.elx-preview-pane {
  background: var(--elx-surface);
  border: 1px solid var(--elx-border-strong);
  border-radius: var(--elx-radius);
  padding: 1.25rem;
  position: sticky;
  top: 4.5rem;
}

@media (max-width: 980px) {
  .elx-preview-pane {
    position: static;
  }
}

.elx-preview-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.elx-file-tabs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.4rem;
}

.elx-file-tabs button {
  font-family: var(--elx-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.42rem 0.85rem;
  border-radius: 6px;
  border: 1px solid var(--elx-border);
  background: var(--elx-code-bg);
  color: var(--elx-muted);
  cursor: pointer;
}

.elx-file-tabs button[aria-pressed="true"] {
  background: var(--elx-amber);
  color: #0a0e14;
  border-color: var(--elx-amber);
}

.elx-file-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.elx-act-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--elx-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.42rem 0.78rem;
  border-radius: 6px;
  border: 1px solid var(--elx-teal);
  background: var(--elx-teal-soft);
  color: var(--elx-teal-bright);
  cursor: pointer;
  text-decoration: none;
}

.elx-act-btn:hover {
  background: var(--elx-teal);
  color: #070a0f;
  text-decoration: none;
}

.elx-code-fig {
  margin: 0 0 1rem;
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  overflow: hidden;
}

.elx-code-fig figcaption {
  padding: 0.45rem 0.85rem;
  background: #0d131d;
  border-bottom: 1px solid var(--elx-border);
  font-family: var(--elx-mono);
  font-size: 0.75rem;
  color: var(--elx-muted);
}

.elx-code-fig pre {
  margin: 0;
  padding: 0.9rem;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.52;
  color: #e2e8f0;
}

.elx-ram-meter {
  margin-bottom: 0.95rem;
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
}

.elx-ram-meter-top {
  display: flex;
  justify-content: space-between;
  font-family: var(--elx-mono);
  font-size: 0.75rem;
  color: var(--elx-muted);
  margin-bottom: 0.4rem;
}

.elx-ram-track {
  display: flex;
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: #1e293b;
}

.elx-ram-seg-heap {
  background: var(--elx-amber);
  transition: width 0.2s ease;
}

.elx-ram-seg-cache {
  background: var(--elx-teal);
  transition: width 0.2s ease;
}

.elx-telemetry-dl {
  margin: 0 0 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

@media (max-width: 600px) {
  .elx-telemetry-dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.elx-telemetry-cell {
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-radius: 7px;
  padding: 0.55rem 0.68rem;
}

.elx-telemetry-dl dt {
  font-size: 0.72rem;
  color: var(--elx-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.elx-telemetry-dl dd {
  margin: 0.18rem 0 0;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--elx-text);
}

.elx-rec-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.elx-rec-item {
  background: var(--elx-panel);
  border: 1px solid var(--elx-border-strong);
  border-radius: 8px;
  padding: 0.75rem 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.elx-rec-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.elx-rec-top h3 {
  margin: 0;
  font-size: 0.9rem;
  color: var(--elx-text);
}

.elx-rec-price {
  font-family: var(--elx-mono);
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--elx-amber-bright);
}

.elx-rec-item p {
  margin: 0;
  font-size: 0.8rem;
  color: #cbd5e1;
}

.elx-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  background: var(--elx-amber);
  color: #0a0e14;
  font-weight: 800;
  font-size: 0.82rem;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 0.2rem;
}

.elx-cta:hover {
  background: var(--elx-amber-bright);
  color: #0a0e14;
  text-decoration: none;
}

/* Sections, Tables, Diagrams & Video Showcase */
.elx-tier-match,
.elx-watermark-ref,
.elx-cluster-directory,
.elx-faq,
.elx-media-brief {
  background: var(--elx-surface);
  border: 1px solid var(--elx-border);
  border-radius: var(--elx-radius);
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  margin-bottom: 1.75rem;
}

.elx-tier-match h2,
.elx-watermark-ref h2,
.elx-cluster-directory h2,
.elx-faq h2 {
  margin: 0 0 0.55rem;
  font-size: 1.32rem;
  color: var(--elx-text);
}

.elx-table-scroll {
  width: 100%;
  overflow-x: auto;
  margin-top: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

th, td {
  text-align: left;
  padding: 0.68rem 0.78rem;
  border-bottom: 1px solid var(--elx-border);
  vertical-align: top;
}

th {
  background: var(--elx-code-bg);
  color: var(--elx-amber-bright);
  font-family: var(--elx-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.elx-price-note {
  margin-top: 0.85rem;
  padding: 0.68rem 0.85rem;
  border-radius: 7px;
  background: rgba(245, 158, 11, 0.09);
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-size: 0.82rem;
  color: #fde68a;
}

.elx-svg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.2rem;
}

.elx-svg-card {
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  padding: 0.85rem;
}

.elx-svg-card svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Video Showcase */
.elx-reel-card {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 144px;
  gap: 1.25rem;
  align-items: center;
}

@media (max-width: 820px) {
  .elx-reel-card {
    grid-template-columns: 1fr;
  }
  .elx-reel-poster-aside {
    display: none;
  }
}

.elx-reel-frame video {
  width: 100%;
  max-width: 200px;
  border-radius: 8px;
  border: 1px solid var(--elx-border-strong);
  background: #000;
}

.elx-reel-copy h2 {
  margin: 0.25rem 0 0.5rem;
  font-size: 1.22rem;
}

.elx-reel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.85rem;
}

.elx-poster-thumb {
  border-radius: 8px;
  border: 1px solid var(--elx-border);
  max-width: 100%;
  height: auto;
}

/* Directory Cards & FAQ */
.elx-dir-grid {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.4rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 0.9rem;
}

.elx-dir-card {
  background: var(--elx-panel);
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  padding: 0.95rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.55rem;
}

.elx-dir-card h3 {
  margin: 0.2rem 0;
  font-size: 0.98rem;
}

.elx-dir-card p {
  margin: 0;
  font-size: 0.83rem;
  color: var(--elx-muted);
}

.elx-qa {
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  background: var(--elx-code-bg);
  padding: 0.75rem 0.95rem;
  margin-top: 0.65rem;
}

.elx-qa summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--elx-text);
  font-size: 0.93rem;
}

.elx-qa p {
  margin: 0.6rem 0 0.1rem;
  color: #cbd5e1;
  font-size: 0.88rem;
}

/* Blueprint & Compare Subpages (<article class="elx-blueprint">) */
.elx-blueprint,
.elx-governance {
  background: var(--elx-surface);
  border: 1px solid var(--elx-border);
  border-radius: var(--elx-radius);
  padding: clamp(1.25rem, 2.8vw, 2rem);
}

.elx-crumbs {
  font-family: var(--elx-mono);
  font-size: 0.78rem;
  color: var(--elx-muted);
  margin-bottom: 0.85rem;
}

.elx-summary-rail {
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border-strong);
  border-left: 4px solid var(--elx-teal);
  border-radius: 8px;
  padding: 0.95rem 1.1rem;
  margin: 1.15rem 0 1.5rem;
}

.elx-summary-rail dl {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.elx-summary-rail dt {
  font-family: var(--elx-mono);
  font-size: 0.73rem;
  color: var(--elx-muted);
  text-transform: uppercase;
}

.elx-summary-rail dd {
  margin: 0.2rem 0 0;
  font-weight: 700;
  color: var(--elx-amber-bright);
  font-size: 0.9rem;
}

.elx-clause {
  border-top: 1px solid var(--elx-border);
  padding-top: 1.15rem;
  margin-top: 1.25rem;
}

.elx-clause h2 {
  font-size: 1.18rem;
  margin: 0 0 0.55rem;
  color: var(--elx-amber-bright);
}

.elx-points {
  padding-left: 1.25rem;
  color: #cbd5e1;
}

.elx-points li {
  margin-bottom: 0.35rem;
}

.elx-inline-media {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--elx-code-bg);
  border: 1px solid var(--elx-border);
  border-radius: 8px;
  padding: 0.85rem;
  margin: 1.15rem 0;
}

.elx-inline-media img {
  width: 72px;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--elx-border);
}

/* Footer & Mobile Bar */
.elx-footer {
  background: #070a0f;
  border-top: 1px solid var(--elx-border);
  padding: 2rem clamp(1rem, 3vw, 2.25rem) 4.2rem;
  color: var(--elx-muted);
  font-size: 0.84rem;
}

.elx-footer-inner {
  max-width: var(--elx-maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 780px) {
  .elx-footer-inner {
    grid-template-columns: 1fr;
  }
}

.elx-footer ul {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.elx-footer li {
  margin-bottom: 0.35rem;
}

.elx-mob-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 45;
  background: rgba(10, 14, 20, 0.97);
  border-top: 1px solid var(--elx-amber);
  padding: 0.55rem 0.95rem;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}

@media (max-width: 820px) {
  .elx-mob-bar {
    display: flex;
  }
}