:root {
      --cf-bg: #0b0f14;
      --cf-surface: #121820;
      --cf-surface-raised: #18222d;
      --cf-surface-highlight: #212e3d;
      --cf-border: #2d3b4d;
      --cf-border-subtle: #1c2734;
      --cf-text: #e6edf3;
      --cf-muted: #8a9bb0;
      --cf-accent: #0284c7;
      --cf-accent-glow: rgba(2, 132, 199, 0.25);
      --cf-teal: #0d9488;
      --cf-gold: #f59e0b;
      --cf-green: #10b981;
      --cf-red: #ef4444;
    }

    body {
      background-color: var(--cf-bg);
      background-image:
        radial-gradient(rgba(2, 132, 199, 0.06) 1px, transparent 1px),
        linear-gradient(180deg, rgba(11, 15, 20, 0.98) 0%, #0b0f14 100%);
      background-size: 32px 32px, 100% 100%;
      color: var(--cf-text);
      font-family: var(--font-body);
      min-height: 100vh;
      margin: 0;
      padding: 0;
      line-height: 1.55;
    }

    .demo-wrapper {
      width: min(1180px, calc(100% - 3rem));
      margin: 0 auto;
      padding: 2.5rem 0 6rem;
    }

    .demo-nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1.5rem;
      padding-bottom: 2.5rem;
      border-bottom: 1px solid var(--cf-border-subtle);
      margin-bottom: 3.5rem;
    }

    .nav-back {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      color: var(--cf-text);
      text-decoration: none;
      font: 500 0.85rem var(--font-data);
      letter-spacing: 0.02em;
      padding: 0.5rem 1rem;
      border-radius: 999px;
      background: var(--cf-surface);
      border: 1px solid var(--cf-border);
      transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
    }

    .nav-back:hover {
      background: var(--cf-surface-raised);
      border-color: var(--cf-accent);
      color: #ffffff;
    }

    .nav-back .arrow {
      color: var(--cf-accent);
      transition: transform 0.2s ease;
    }

    .nav-back:hover .arrow {
      transform: translateX(-3px);
    }

    .nav-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.35rem 0.85rem;
      border-radius: 999px;
      background: rgba(2, 132, 199, 0.12);
      border: 1px solid rgba(2, 132, 199, 0.32);
      font: 500 0.72rem var(--font-data);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: #7dd3fc;
    }

    .pulse-dot {
      width: 0.45rem;
      height: 0.45rem;
      border-radius: 50%;
      background: var(--cf-accent);
      box-shadow: 0 0 8px var(--cf-accent);
      animation: cfPulse 2s infinite ease-in-out;
    }

    @keyframes cfPulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    .demo-hero {
      margin-bottom: 3.5rem;
    }

    .hero-meta {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.2rem;
      flex-wrap: wrap;
    }

    .hero-eyebrow {
      font: 500 0.76rem var(--font-data);
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--cf-accent);
    }

    .hero-sep {
      color: var(--cf-border);
    }

    .hero-author {
      font: 400 0.82rem var(--font-body);
      color: var(--cf-muted);
    }

    .demo-hero h1 {
      font-size: clamp(2.4rem, 5.5vw, 4.8rem);
      line-height: 1.02;
      letter-spacing: -0.04em;
      margin: 0 0 1.5rem;
      font-weight: 600;
      color: #ffffff;
      max-width: 18ch;
    }

    .demo-hero h1 em {
      font-style: normal;
      color: var(--cf-accent);
    }

    .hero-lead {
      font-size: clamp(1.05rem, 1.8vw, 1.22rem);
      line-height: 1.55;
      color: var(--cf-muted);
      max-width: 46rem;
      margin: 0 0 2.2rem;
    }

    .hero-specs {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 1rem;
      margin-bottom: 1rem;
    }

    .spec-card {
      padding: 1rem 1.25rem;
      border-radius: 14px;
      background: var(--cf-surface);
      border: 1px solid var(--cf-border-subtle);
    }

    .spec-label {
      display: block;
      font: 500 0.68rem var(--font-data);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--cf-muted);
      margin-bottom: 0.35rem;
    }

    .spec-value {
      display: block;
      font-size: 0.94rem;
      font-weight: 500;
      color: var(--cf-text);
    }

    .workbench-section {
      margin-bottom: 4.5rem;
    }

    .workbench-frame {
      border: 1px solid var(--cf-border);
      border-radius: 20px;
      background: var(--cf-surface);
      box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.04);
      overflow: hidden;
    }

    .workbench-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.9rem 1.4rem;
      background: #0e141c;
      border-bottom: 1px solid var(--cf-border-subtle);
      font: 500 0.76rem var(--font-data);
      flex-wrap: wrap;
      gap: 0.8rem;
    }

    .window-dots {
      display: inline-flex;
      gap: 0.4rem;
    }

    .window-dot {
      width: 0.55rem;
      height: 0.55rem;
      border-radius: 50%;
    }

    .window-dot.close { background: #ef4444; }
    .window-dot.min { background: #f59e0b; }
    .window-dot.max { background: #10b981; }

    .workbench-title-group {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }

    .workbench-title-group strong {
      color: #f0f6fc;
      letter-spacing: 0.03em;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.2rem 0.6rem;
      border-radius: 999px;
      background: rgba(16, 185, 129, 0.12);
      border: 1px solid rgba(16, 185, 129, 0.3);
      color: #34d399;
      font-size: 0.7rem;
    }

    .workbench-modes {
      display: flex;
      background: #080c10;
      border-bottom: 1px solid var(--cf-border-subtle);
      padding: 0.4rem 1rem;
      gap: 0.4rem;
      overflow-x: auto;
    }

    .mode-tab {
      padding: 0.65rem 1.15rem;
      background: transparent;
      border: 1px solid transparent;
      border-radius: 8px;
      color: var(--cf-muted);
      font: 500 0.82rem var(--font-body);
      cursor: pointer;
      white-space: nowrap;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .mode-tab:hover {
      color: var(--cf-text);
      background: var(--cf-surface-raised);
    }

    .mode-tab.is-active {
      background: var(--cf-surface-highlight);
      border-color: var(--cf-border);
      color: #ffffff;
      font-weight: 600;
    }

    .workbench-view {
      display: none;
      padding: 1.8rem;
    }

    .workbench-view.is-active {
      display: block;
    }

    /* SIMULADOR VALIDADOR */
    .validator-layout {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 2rem;
      align-items: start;
    }

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

    .input-card {
      background: #0f151e;
      border: 1px solid var(--cf-border);
      border-radius: 14px;
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.1rem;
    }

    .field-group {
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    .field-label {
      font: 600 0.76rem var(--font-data);
      color: #94a3b8;
      display: flex;
      justify-content: space-between;
    }

    .field-input {
      background: #17212d;
      border: 1px solid var(--cf-border);
      border-radius: 8px;
      padding: 0.65rem 0.85rem;
      color: #ffffff;
      font: 500 0.88rem var(--font-data);
      outline: none;
      transition: border-color 0.2s ease;
    }

    .field-input:focus {
      border-color: var(--cf-accent);
    }

    .field-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    .presets-row {
      display: flex;
      gap: 0.5rem;
      flex-wrap: wrap;
      margin-bottom: 0.5rem;
    }

    .btn-preset {
      padding: 0.4rem 0.75rem;
      border-radius: 6px;
      background: var(--cf-surface-raised);
      border: 1px solid var(--cf-border);
      color: var(--cf-text);
      font: 500 0.74rem var(--font-data);
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .btn-preset:hover {
      background: var(--cf-accent);
      border-color: var(--cf-accent);
      color: #ffffff;
    }

    .results-card {
      background: #0f151e;
      border: 1px solid var(--cf-border);
      border-radius: 14px;
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
    }

    .audit-verdict-box {
      padding: 1rem 1.2rem;
      border-radius: 10px;
      background: #172230;
      border: 1px solid #0284c7;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    .audit-verdict-title {
      font: 600 0.78rem var(--font-data);
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: #38bdf8;
    }

    .audit-status-badge {
      align-self: flex-start;
      padding: 0.25rem 0.65rem;
      border-radius: 999px;
      font: 600 0.72rem var(--font-data);
    }

    .badge-pass { background: rgba(16, 185, 129, 0.15); border: 1px solid #10b981; color: #34d399; }
    .badge-fail { background: rgba(239, 68, 68, 0.15); border: 1px solid #ef4444; color: #f87171; }
    .badge-warn { background: rgba(245, 158, 11, 0.15); border: 1px solid #f59e0b; color: #fcd34d; }

    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 0.8rem;
      padding: 0.85rem 1rem;
      background: #141c27;
      border: 1px solid var(--cf-border-subtle);
      border-radius: 8px;
    }

    .check-icon {
      font-size: 1.1rem;
      line-height: 1;
    }

    .check-content strong {
      display: block;
      font-size: 0.85rem;
      color: #ffffff;
      margin-bottom: 0.15rem;
    }

    .check-content p {
      font-size: 0.78rem;
      color: var(--cf-muted);
      margin: 0;
      line-height: 1.4;
    }

    /* BANDEJA PROVEEDOR Y COMPRADOR */
    .table-container {
      background: #0e141c;
      border: 1px solid var(--cf-border);
      border-radius: 12px;
      overflow-x: auto;
    }

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

    .data-table th {
      background: #141d28;
      padding: 0.85rem 1.1rem;
      font: 600 0.72rem var(--font-data);
      color: var(--cf-muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      border-bottom: 1px solid var(--cf-border);
    }

    .data-table td {
      padding: 0.95rem 1.1rem;
      border-bottom: 1px solid var(--cf-border-subtle);
      color: var(--cf-text);
    }

    .data-table tr:hover td {
      background: #17212e;
    }

    .btn-action-small {
      padding: 0.3rem 0.65rem;
      border-radius: 6px;
      background: var(--cf-surface-raised);
      border: 1px solid var(--cf-border);
      color: var(--cf-text);
      font: 500 0.74rem var(--font-body);
      cursor: pointer;
      transition: all 0.15s ease;
    }

    .btn-action-small:hover {
      background: var(--cf-accent);
      border-color: var(--cf-accent);
      color: #ffffff;
    }

    /* REGLAS MOTOR */
    .rules-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.25rem;
    }

    .rule-card {
      background: #0f151e;
      border: 1px solid var(--cf-border);
      border-radius: 12px;
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
    }

    .rule-num {
      font: 600 0.72rem var(--font-data);
      color: var(--cf-accent);
      letter-spacing: 0.08em;
    }

    .rule-card h5 {
      font-size: 0.95rem;
      color: #ffffff;
      margin: 0;
      font-weight: 600;
    }

    .rule-card p {
      font-size: 0.82rem;
      color: var(--cf-muted);
      line-height: 1.5;
      margin: 0;
    }

    /* METODO Y FRONTERAS */
    .method-section {
      margin-bottom: 4.5rem;
    }

    .section-head-simple {
      margin-bottom: 2.5rem;
    }

    .section-head-simple h2 {
      font-size: clamp(1.8rem, 3.5vw, 2.5rem);
      letter-spacing: -0.03em;
      margin: 0 0 0.75rem;
      color: #ffffff;
      font-weight: 600;
    }

    .section-head-simple p {
      color: var(--cf-muted);
      font-size: 1.05rem;
      margin: 0;
    }

    .method-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
    }

    .method-box {
      background: var(--cf-surface);
      border: 1px solid var(--cf-border-subtle);
      border-radius: 16px;
      padding: 1.75rem;
    }

    .method-step-num {
      display: block;
      font: 600 0.75rem var(--font-data);
      color: var(--cf-accent);
      letter-spacing: 0.1em;
      margin-bottom: 0.85rem;
    }

    .method-box h3 {
      font-size: 1.15rem;
      color: #ffffff;
      margin: 0 0 0.65rem;
      font-weight: 600;
    }

    .method-box p {
      font-size: 0.88rem;
      color: var(--cf-muted);
      line-height: 1.55;
      margin: 0;
    }

    .boundary-section {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
      margin-bottom: 4.5rem;
    }

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

    .boundary-block {
      background: var(--cf-surface);
      border: 1px solid var(--cf-border-subtle);
      border-radius: 16px;
      padding: 1.5rem 1.75rem;
    }

    .boundary-block h4 {
      margin: 0 0 0.65rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
    }

    .boundary-block p {
      margin: 0;
      font-size: 0.85rem;
      color: var(--cf-muted);
      line-height: 1.55;
    }

    .demo-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 2rem;
      border-top: 1px solid var(--cf-border-subtle);
      font: 400 0.82rem var(--font-body);
      color: var(--cf-muted);
      flex-wrap: wrap;
      gap: 1rem;
    }

    .demo-footer a {
      color: var(--cf-accent);
      text-decoration: none;
      font-weight: 500;
    }

    .demo-footer a:hover {
      text-decoration: underline;
    }

    .btn-run {
      padding: 0.75rem 1.25rem;
      border-radius: 8px;
      background: #0284c7;
      border: 1px solid #0284c7;
      color: #ffffff;
      font: 600 0.85rem var(--font-body);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      transition: background 0.2s ease;
    }

    .btn-run:hover {
      background: #0369a1;
    }

/* Clases utilitarias extraídas para cumplimiento estricto CSP */
.cf-text-muted { color: var(--cf-muted); }
.cf-mb-12 { margin-bottom: 1.2rem; }
.cf-field-label { font: 600 0.74rem var(--font-data); color: var(--cf-muted); margin-bottom: 0.5rem; display: block; }
.cf-flex-between { display: flex; justify-content: space-between; align-items: center; }
.cf-verdict-p { font-size: 0.84rem; color: #cbd5e1; margin: 0; }
.cf-feature-column { display: flex; flex-direction: column; gap: 0.8rem; }
.cf-mb-15 { margin-bottom: 1.5rem; }
.cf-section-title { font-size: 1.25rem; color: #ffffff; margin: 0 0 0.5rem; font-weight: 600; }
.cf-section-desc { color: var(--cf-muted); font-size: 0.88rem; margin: 0; }
.cf-status-review { color: #38bdf8; }
.cf-status-correction { color: #f87171; }
.cf-status-approved { color: #34d399; }
.cf-action-group { display: flex; gap: 0.4rem; }
.btn-action-primary { background: #0284c7; color: #fff; }