:root {
    --bg:#ffffff; --bg2:#f5f5f7; --bg3:#e8e8ed;
    --text:#1d1d1f; --text2:#6e6e73; --text3:#6f6f71;
    --border:rgba(0,0,0,0.06); --border2:rgba(0,0,0,0.12);
    --accent:#006ad5; --accent2:#006bd5; --accent3:#e8f0fd;
    --blue:#006ad5; --amber:#bb4e00; --amber-bg:#fff3e0;
    --red:#d13027; --red-bg:#fff0ee;
    --purple:#7d3ee8; --purple-bg:#f2eefe;
    --teal:#007973; --teal-bg:#e0f5f4;
    --card-radius:18px;
  }
  /* CORRECCIÓN v14.51.49: --text3, --accent, --accent2, --amber, --red y
     --teal (modo claro) no llegaban al contraste mínimo WCAG AA (4.5:1)
     contra los fondos donde se usan — afectaba directamente las citas de
     fuente (chart-src/kpi-src/.fuentes) y las insignias OBSERVADO/CALIBRADO/
     SUPUESTO. Valores recalculados para pasar 4.5:1 manteniendo la misma
     familia de color. Ver .jez/artifacts/design-review.md para el detalle. */
  @media(prefers-color-scheme:dark){
    :root{
      --bg:#000000; --bg2:#1c1c1e; --bg3:#2c2c2e;
      --text:#f5f5f7; --text2:#98989d; --text3:#858587;
      --border:rgba(255,255,255,0.08); --border2:rgba(255,255,255,0.14);
      --accent:#2997ff; --accent2:#5aacff; --accent3:#001f4d;
      --blue:#2997ff; --amber:#ff9f0a; --amber-bg:#2a1800;
      --red:#ff453a; --red-bg:#2a0800;
      --purple:#bf5af2; --purple-bg:#1e0a36;
      --teal:#32d4c8; --teal-bg:#002422;
    }
  }

  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:-apple-system,'SF Pro Display','SF Pro Text',BlinkMacSystemFont,'Helvetica Neue',Helvetica,Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    font-size:17px;
    line-height:1.7;
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }

  /* ── NAV ── */
  nav{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,0.8);
    backdrop-filter:saturate(180%) blur(20px);
    -webkit-backdrop-filter:saturate(180%) blur(20px);
    border-bottom:1px solid var(--border);
    display:flex;align-items:center;
    padding:0 4vw;
    height:52px;
  }
  @media(prefers-color-scheme:dark){
    nav{background:rgba(0,0,0,0.8);}
  }
  .nav-brand{
    font-size:21px;font-weight:600;letter-spacing:-.02em;
    color:var(--text);margin-right:2.5rem;white-space:nowrap;
  }
  .nav-links{display:flex;flex:1;overflow-x:auto;}
  .nav-links a{
    display:flex;align-items:center;gap:6px;
    font-size:14px;font-weight:400;letter-spacing:-.01em;
    color:var(--text2);text-decoration:none;
    padding:0 14px;height:52px;
    border-bottom:2px solid transparent;
    white-space:nowrap;
    transition:color .2s;
  }
  .nav-links a:hover{color:var(--text);}
  .nav-links a.active{color:var(--accent);border-bottom-color:var(--accent);}
  .nav-links a .badge{
    font-size:11px;background:var(--accent);color:#fff;
    border-radius:999px;padding:2px 8px;font-weight:600;
  }

  /* Título de sección en la barra superior — reemplaza a .nav-links en
     pantallas angostas, donde la navegación primaria pasa a .bottom-nav. */
  .nav-title-mobile{display:none;font-size:15px;font-weight:600;color:var(--text);}

  /* Nav inferior fija — patrón Android estándar (Material Bottom Navigation),
     oculta por defecto; se activa en el media query móvil más abajo. Evita
     que "Simulador"/"Metodología" queden fuera de pantalla como pasaba con
     el scroll horizontal de .nav-links en móvil. */
  .bottom-nav{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:150;
    background:var(--bg);border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom,0);
  }
  .bottom-nav a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
    padding:8px 4px 10px;font-size:11px;font-weight:500;letter-spacing:-.01em;
    color:var(--text3);text-decoration:none;
  }
  .bottom-nav a.active{color:var(--accent);}
  .bottom-nav .bn-icon{display:flex;}
  .bottom-nav .bn-icon svg{width:22px;height:22px;display:block;}

  #btn-manual-flotante{bottom:22px;right:22px;}

  .page{display:none;} .page.active{display:block;}
  .subpanel{display:none;} .subpanel.active{display:block;}
  .datapanel{display:none;} .datapanel.active{display:block;}
  .simpanel{display:none;} .simpanel.active{display:block;}
  .metodpanel{display:none;} .metodpanel.active{display:block;}

  /* ── HERO ── */
  .hero{
    background:var(--bg2);
    padding:6rem 4vw 5rem;
    text-align:center;
  }
  .hero-eyebrow{
    font-size:14px;letter-spacing:.01em;
    color:var(--accent);font-weight:600;margin-bottom:.75rem;
  }
  .hero h1{
    font-size:clamp(2.6rem,5.5vw,4.2rem);
    font-weight:700;line-height:1.05;
    margin-bottom:1.1rem;
    letter-spacing:-.04em;
    color:var(--text);
  }
  .hero p{
    font-size:19px;color:var(--text2);
    max-width:720px;margin:0 auto 2.25rem;
    line-height:1.65;letter-spacing:-.01em;
  }
  .hero-tags{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;}
  .tag{
    font-size:13px;background:var(--bg3);color:var(--text2);
    border-radius:999px;padding:5px 16px;
    border:none;
  }

  /* ── LAYOUT ── */
  .container{width:100%;padding:0 4vw;}
  .section{padding:3.5rem 0;}

  /* ── SECTION TITLE ── */
  .section-title{
    font-size:12px;letter-spacing:.06em;text-transform:uppercase;
    color:var(--text3);font-weight:600;
    margin-bottom:1.5rem;
    display:flex;align-items:center;gap:12px;
  }
  .section-title::after{content:'';flex:1;height:1px;background:var(--border2);}

  /* ── KPI GRID ── */
  .kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2px;margin-bottom:2.5rem;background:var(--border);border-radius:var(--card-radius);overflow:hidden;}
  .kpi{
    background:var(--bg2);
    border-radius:0;border:none;
    padding:1.6rem 1.75rem;
    position:relative;overflow:hidden;
    transition:background .2s;
  }
  .kpi:hover{background:var(--bg3);}
  .kpi::before{content:'';position:absolute;left:0;top:0;right:0;height:2px;}
  .kpi.green::before{background:var(--accent);}
  .kpi.amber::before{background:var(--amber);}
  .kpi.red::before{background:var(--red);}
  .kpi.blue::before{background:var(--blue);}
  .kpi.purple::before{background:var(--purple);}
  .kpi.teal::before{background:var(--teal);}
  .kpi-label{font-size:13px;color:var(--text2);margin-bottom:8px;line-height:1.3;letter-spacing:-.01em;}
  .kpi-vals{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap;}
  .kpi-val{font-size:28px;font-weight:700;color:var(--text);letter-spacing:-.04em;}
  .kpi-val2{font-size:17px;font-weight:400;color:var(--text2);}
  .kpi-sep{font-size:14px;color:var(--text3);}
  .kpi-delta{font-size:12px;margin-top:5px;letter-spacing:-.01em;}
  .kpi-delta.up{color:var(--teal);}
  .kpi-delta.down{color:var(--red);}
  .kpi-src{font-family:'SF Mono','Menlo','Courier New',monospace;font-size:10px;color:var(--text3);margin-top:4px;}

  /* ── CHARTS ── */
  .chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;margin-bottom:2.5rem;}
  .chart-card{
    background:var(--bg2);border-radius:var(--card-radius);
    border:none;padding:1.75rem;
    transition:transform .2s,box-shadow .2s;
  }
  .chart-card:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,0.08);}
  .chart-card h3{font-size:13px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px;}
  .chart-src{font-size:11px;color:var(--text3);margin-bottom:14px;font-family:'SF Mono','Menlo','Courier New',monospace;}
  .chart-wrap{position:relative;width:100%;height:220px;}

  /* ── ANALYSIS CARDS ── */
  .analysis-card{
    background:var(--bg2);border-radius:var(--card-radius);
    border:none;padding:2.25rem;
    margin-bottom:16px;
    transition:transform .2s,box-shadow .2s;
  }
  .analysis-card:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(0,0,0,0.08);}
  .analysis-card h3{font-size:22px;font-weight:700;margin-bottom:1rem;letter-spacing:-.03em;}
  .analysis-card p{color:var(--text2);margin-bottom:.8rem;font-size:17px;line-height:1.75;letter-spacing:-.01em;}
  .analysis-card p:last-child{margin-bottom:0;}

  /* ── AGG SECTION ── */
  .agg-section{
    background:var(--bg2);border-radius:var(--card-radius);
    border:none;padding:2.25rem;margin-bottom:16px;
  }
  .agg-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;flex-wrap:wrap;gap:12px;}
  .agg-header h3{font-size:22px;font-weight:700;letter-spacing:-.03em;}
  .agg-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
  .agg-mode-toggle{display:flex;background:var(--bg3);border-radius:999px;padding:3px;gap:2px;}
  .agg-mode-toggle button{
    font-size:13px;font-weight:500;padding:5px 18px;
    border:none;border-radius:999px;
    cursor:pointer;background:transparent;color:var(--text2);
    transition:background .2s,color .2s,box-shadow .2s;
  }
  .agg-mode-toggle button:hover{color:var(--text);}
  .agg-mode-toggle button.active{background:var(--bg);color:var(--text);box-shadow:0 1px 4px rgba(0,0,0,0.12);}

  /* .canal-tabs: mismo estilo visual que .agg-mode-toggle, pero clase independiente
     para que setMode()/showSubPanel() no se pisen entre sí (bug real encontrado:
     ambos mecanismos compartían clase y ancestro .section, y se desactivaban uno
     al otro sin querer). */
  .canal-tabs{display:flex;flex-wrap:wrap;justify-content:center;background:var(--bg3);border-radius:999px;padding:3px;gap:2px;}
  .canal-tabs button{
    font-size:13px;font-weight:500;padding:5px 18px;
    border:none;border-radius:999px;
    cursor:pointer;background:transparent;color:var(--text2);
    transition:background .2s,color .2s,box-shadow .2s;
  }
  .canal-tabs button:hover{color:var(--text);}
  .canal-tabs button.active{background:var(--bg);color:var(--text);box-shadow:0 1px 4px rgba(0,0,0,0.12);}

  /* ── DEF CARDS ── */
  .def-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:2rem;}
  .def-card{border-radius:var(--card-radius);padding:1.4rem 1.6rem;border:none;}
  .def-card.m1{background:var(--accent3);}
  .def-card.m2{background:var(--amber-bg);}
  .def-card.m3{background:var(--purple-bg);}
  .def-card.m4{background:var(--teal-bg);}
  .def-title{font-size:12px;font-weight:700;margin-bottom:7px;text-transform:uppercase;letter-spacing:.05em;}
  .def-title.m1{color:var(--accent);}
  .def-title.m2{color:var(--amber);}
  .def-title.m3{color:var(--purple);}
  .def-title.m4{color:var(--teal);}
  .def-text{font-size:15px;color:var(--text2);line-height:1.65;letter-spacing:-.01em;}

  /* ── EDIT GRID ── */
  .edit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:2rem;}
  .edit-cell{background:var(--bg2);border-radius:14px;padding:1.2rem 1.4rem;border:none;}
  .edit-label{font-size:11px;color:var(--text3);margin-bottom:6px;text-transform:uppercase;letter-spacing:.07em;font-weight:600;}
  .edit-input{font-size:18px;font-weight:600;background:transparent;border:none;color:var(--text);width:100%;outline:none;font-family:'SF Mono','Menlo','Courier New',monospace;letter-spacing:-.02em;}
  .edit-unit{font-size:12px;color:var(--text3);}
  .edit-badge{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;margin-bottom:6px;}
  .bm1{background:var(--accent3);color:var(--accent);}
  .bm1p{background:var(--accent3);color:var(--accent2);}
  .bm2{background:var(--amber-bg);color:var(--amber);}
  .bm2p{background:var(--amber-bg);color:#8a3800;}
  .bm3{background:var(--purple-bg);color:var(--purple);}
  .bm3p{background:var(--purple-bg);color:#5c3d8f;}
  .bm4{background:var(--teal-bg);color:var(--teal);}
  .bm4p{background:var(--teal-bg);color:#025d60;}

  /* ── CONTROLS ── */
  .reset-btn{
    font-size:14px;font-weight:500;padding:8px 18px;
    border-radius:999px;border:none;
    background:var(--bg3);color:var(--text2);
    cursor:pointer;transition:background .2s,color .2s;
    display:inline-flex;align-items:center;gap:7px;
  }
  .reset-btn:hover{background:var(--red-bg);color:var(--red);}
  .reset-btn svg{width:16px;height:16px;flex-shrink:0;}
  .base-sel{
    font-size:15px;background:var(--bg3);color:var(--text);
    border:none;border-radius:999px;
    padding:7px 16px;cursor:pointer;
    -webkit-appearance:none;
  }

  /* ── SLIDERS ── */
  .slider-group{margin-bottom:1.4rem;}
  .slider-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:7px;}
  .slider-label{font-size:15px;color:var(--text2);letter-spacing:-.01em;display:flex;align-items:center;gap:6px;}
  .slider-val{font-family:'SF Mono','Menlo','Courier New',monospace;font-size:14px;font-weight:500;color:var(--text);min-width:130px;text-align:right;}
  input[type=range]{width:100%;accent-color:var(--accent);height:4px;cursor:pointer;border-radius:999px;}

  /* ── EFFECTS GRID ── */
  .effects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-top:1.5rem;}
  .effect-item{background:var(--bg2);border-radius:14px;padding:1.2rem;text-align:center;}
  .effect-label{font-size:12px;color:var(--text3);margin-bottom:6px;letter-spacing:.01em;}
  .effect-val{font-size:24px;font-weight:700;color:var(--text);letter-spacing:-.03em;}
  .effect-delta{font-size:13px;margin-top:4px;}
  .effect-delta.pos{color:var(--teal);}
  .effect-delta.neg{color:var(--red);}

  /* ── CANAL IS-LM ── */
  .canal-box{background:var(--bg2);border-radius:14px;padding:1.4rem 1.75rem;margin:1.4rem 0;}
  .canal-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.07em;color:var(--text3);margin-bottom:1rem;}
  .canal-flow{display:flex;align-items:center;flex-wrap:wrap;gap:8px;}
  .canal-step{
    background:var(--bg);border:none;
    border-radius:10px;padding:8px 18px;
    font-size:14px;color:var(--text2);text-align:center;
    box-shadow:0 1px 4px rgba(0,0,0,0.07);
  }
  .canal-step strong{display:block;font-size:16px;font-weight:700;color:var(--text);font-family:'SF Mono','Menlo','Courier New',monospace;letter-spacing:-.02em;}
  .canal-step.highlight{background:var(--accent3);}
  .canal-step.highlight strong{color:var(--accent);}
  .canal-step.warn{background:var(--red-bg);}
  .canal-step.warn strong{color:var(--red);}
  .canal-arrow{font-size:20px;color:var(--text3);}

  /* ── COEF TABLE ── */
  .coef-table{width:100%;border-collapse:collapse;font-size:15px;margin:1.25rem 0;}
  .coef-table th{
    font-size:11px;text-transform:uppercase;letter-spacing:.07em;
    color:var(--text3);font-weight:600;
    border-bottom:1px solid var(--border2);
    padding:9px 16px;text-align:left;
  }
  .coef-table td{padding:11px 16px;border-bottom:1px solid var(--border);color:var(--text2);}
  .coef-table td:nth-child(2),.coef-table td:nth-child(3){font-family:'SF Mono','Menlo','Courier New',monospace;font-size:14px;}
  .coef-table tr:last-child td{border-bottom:none;}
  .coef-table tr:hover td{background:var(--bg2);}
  .coef-ok{color:var(--teal);font-weight:600;}
  .coef-fix{color:var(--amber);font-weight:600;}

  /* ── TARJETAS DE COEFICIENTE (reemplaza la tabla de 5 columnas en
     Metodología → Coeficientes) — una tabla no es el formato correcto
     cuando una de las columnas es un párrafo largo de explicación; en
     móvil eso forzaba scroll horizontal de la fila entera. Una tarjeta
     por coeficiente deja el dato corto arriba (escaneable) y el texto
     largo abajo, en una sola columna que envuelve normal. ── */
  .coef-card{
    background:var(--bg2);border-radius:14px;padding:1rem 1.25rem;
    margin-bottom:10px;
  }
  .coef-card-head{
    display:flex;align-items:center;justify-content:space-between;
    gap:10px;flex-wrap:wrap;margin-bottom:4px;
  }
  .coef-card-title{font-weight:600;font-size:14.5px;color:var(--text);}
  .coef-card-badges{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
  .coef-card-badge{
    font-size:10px;font-weight:700;letter-spacing:.03em;padding:2px 8px;
    border-radius:999px;white-space:nowrap;
  }
  .coef-card-badge.observado{color:var(--teal);background:var(--teal-bg);}
  .coef-card-badge.calibrado{color:var(--amber);background:var(--amber-bg);}
  .coef-card-badge.supuesto{color:var(--red);background:var(--red-bg);}
  .coef-card-meta{
    font-family:'SF Mono','Menlo','Courier New',monospace;font-size:13px;
    color:var(--text2);margin-bottom:8px;
  }
  .coef-card-meta strong{color:var(--text);}
  .coef-card-desc{font-size:13px;color:var(--text2);line-height:1.55;}

  /* ── POLICY GRID ── */
  .policy-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:1.25rem;}
  .policy-btn{
    border:none;background:var(--bg2);
    border-radius:var(--card-radius);padding:1.3rem 1.5rem;
    cursor:pointer;text-align:left;
    transition:transform .2s,box-shadow .2s;
  }
  .policy-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.08);}
  .policy-btn-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:5px;letter-spacing:-.02em;}
  .policy-btn-desc{font-size:13px;color:var(--text3);letter-spacing:-.01em;}

  /* ── MACRO GRID ── */
  .macro-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin-top:1.25rem;}

  /* ── INFO / WARN BOXES ── */
  /* Contenido secundario colapsado por defecto (tablas de políticas/datos
     crudos, análisis narrativo largo) — reduce cuánto hay que scrollear sin
     esconder la información, con <details> nativo (accesible, sin JS). */
  .details-card{
    border:1px solid var(--border);border-radius:14px;
    padding:0 1.25rem;margin-bottom:14px;background:var(--bg2,transparent);
  }
  .details-card summary{
    padding:1rem 0;cursor:pointer;font-weight:600;font-size:14px;
    color:var(--text2);list-style:none;display:flex;align-items:center;
    justify-content:space-between;
  }
  .details-card summary::-webkit-details-marker{display:none;}
  .details-card summary::after{content:'▾';font-size:12px;color:var(--text3);transition:transform .2s;}
  .details-card[open] summary::after{transform:rotate(180deg);}
  .details-card[open] summary{border-bottom:1px solid var(--border);margin-bottom:1rem;}
  .details-card > *:last-child{margin-bottom:1.25rem;}

  .info-box{
    background:var(--accent3);
    border-left:none;border-radius:14px;
    padding:1.25rem 1.5rem;margin-bottom:12px;
    font-size:16px;color:var(--text2);letter-spacing:-.01em;
  }
  .warn-box{
    background:var(--amber-bg);
    border-left:none;border-radius:14px;
    padding:1.1rem 1.5rem;margin-bottom:12px;
    font-size:15px;color:var(--text2);letter-spacing:-.01em;
  }

  /* ── MISC ── */
  .sub-title{font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.08em;margin:1.5rem 0 .75rem;}
  .fuentes{font-size:13px;color:var(--text3);margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--border2);line-height:2;letter-spacing:-.01em;}
  .fuentes strong{color:var(--text2);}

  /* ── RESPONSIVE ── */
  @media(max-width:768px){
    body{font-size:16px;padding-bottom:64px;} /* deja espacio para .bottom-nav fija */
    nav{padding:0 5vw;height:48px;}
    .nav-links{display:none;}
    .nav-title-mobile{display:block;}
    .bottom-nav{display:flex;}
    #btn-manual-flotante{bottom:calc(64px + 14px);right:16px;}
    .hero{padding:4rem 5vw 3rem;}
    .container{padding:0 5vw;}
    .kpi-grid{grid-template-columns:repeat(2,1fr);}
    .chart-grid{grid-template-columns:1fr;}
    .edit-grid{grid-template-columns:repeat(2,1fr);}
    .canal-flow{flex-direction:column;align-items:flex-start;}
  }
  @media(max-width:480px){
    .kpi-grid{grid-template-columns:1fr;}
    .edit-grid{grid-template-columns:1fr;}
  }