/* THEK · LREM — identidad única del sitio
   Layout: barra superior navy + bandas de héroe navy con filo dorado; contenido sobre fondo claro técnico; tarjetas planas con borde fino. */
:root{
  --bg:#F3F5FA; --bg2:#E9EDF6; --panel:#FFFFFF; --ink:#0E1838; --muted:#55607F; --line:#D8DEEB;
  --navy:#1B2A5E; --navyDeep:#0C1532; --gold:#C9A84C; --goldInk:#9A7A22; --cyan:#0E86B5;
  --red:#C2362F; --amber:#C27408; --green:#1E8A5B;
  --band:#13204B; --bandInk:#FFFFFF; --bandMuted:#B7C2E4;
  --c2023:#8A8FA6; --c2024:#C2362F; --c2026:#1B2A5E; --cAdj:#0E86B5; --cReal:#C9A84C;
  --display:"Barlow Condensed","Arial Narrow",Impact,sans-serif;
  --body:"Archivo","Segoe UI",Roboto,Helvetica,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --maxw:1240px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#090F22; --bg2:#0D1530; --panel:#111A35; --ink:#EEF1FA; --muted:#9DA8C8; --line:#25314F;
  --navy:#A9BCFF; --goldInk:#E2BF62; --cyan:#4CC3EE; --red:#F0726A; --amber:#F2A93B; --green:#4CC98E;
  --band:#0B1430; --c2024:#F0726A; --c2026:#A9BCFF; --cAdj:#4CC3EE; --c2023:#7D84A0; --cReal:#E2BF62; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#090F22; --bg2:#0D1530; --panel:#111A35; --ink:#EEF1FA; --muted:#9DA8C8; --line:#25314F;
  --navy:#A9BCFF; --goldInk:#E2BF62; --cyan:#4CC3EE; --red:#F0726A; --amber:#F2A93B; --green:#4CC98E;
  --band:#0B1430; --c2024:#F0726A; --c2026:#A9BCFF; --cAdj:#4CC3EE; --c2023:#7D84A0; --cReal:#E2BF62; color-scheme:dark}

/* idioma: español primero, inglés con botón */
:root[data-lang="es"] [data-l="en"], :root:not([data-lang]) [data-l="en"]{display:none!important}
:root[data-lang="en"] [data-l="es"]{display:none!important}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}

/* barra superior */
.topbar{position:sticky;top:0;z-index:50;background:var(--navyDeep);color:#fff;border-bottom:3px solid var(--gold)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand img{width:46px;height:46px}
.brand b{font-family:var(--display);font-weight:800;font-size:26px;letter-spacing:.05em;line-height:1}
.brand small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:#B7C2E4;text-transform:uppercase;margin-top:3px}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.nav a{font-family:var(--display);font-weight:700;font-size:19px;letter-spacing:.05em;text-transform:uppercase;text-decoration:none;padding:8px 12px;color:#D9E0F5}
.nav a:hover{color:var(--gold)}
.nav a[aria-current="page"]{color:#fff;box-shadow:inset 0 -3px 0 var(--gold)}
.langBtn{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.08em;border:1.5px solid var(--gold);background:transparent;color:var(--gold);padding:9px 12px;cursor:pointer;margin-left:6px;display:flex;gap:6px;align-items:center}
.langBtn:hover{background:var(--gold);color:var(--navyDeep)}
.langBtn .on{color:#fff}
.langBtn:hover .on{color:var(--navyDeep)}

/* héroe */
.hero{background:radial-gradient(1200px 500px at 85% -10%,#24407F 0%,transparent 60%),var(--band);color:var(--bandInk);border-bottom:4px solid var(--gold);overflow:hidden}
.hero .wrap{padding-block:56px 50px;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.hero.compact .wrap{grid-template-columns:1fr auto;padding-block:40px 36px}
.eyebrow{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.hero h1{font-family:var(--display);font-weight:900;font-size:clamp(84px,13vw,176px);line-height:.82;margin:12px 0 0;letter-spacing:.01em}
.hero h1 .sub{display:block;font-size:clamp(22px,2.8vw,34px);font-weight:700;letter-spacing:.07em;color:var(--bandMuted);margin-top:14px;line-height:1.1}
.hero.compact h1{font-size:clamp(56px,8vw,104px)}
.hero .lead{font-size:clamp(18px,1.7vw,21px);color:#E6EBF8;max-width:62ch;margin:18px 0 0}
.hero .lead strong{color:var(--gold)}
.heroArt{border:1px solid rgba(201,168,76,.45);background:#0A1230;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.emblem{width:clamp(120px,16vw,210px)}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{display:inline-flex;flex-direction:column;border:1px solid rgba(255,255,255,.25);padding:10px 14px;text-decoration:none;min-width:0}
.chip span{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bandMuted)}
.chip strong{font-family:var(--mono);font-size:15px;color:#fff;word-break:break-all}
a.chip:hover{border-color:var(--gold)}
.btnRow{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:20px;letter-spacing:.05em;text-transform:uppercase;text-decoration:none;padding:12px 22px;border:2px solid var(--gold);cursor:pointer}
.btn.primary{background:var(--gold);color:#0C1532}
.btn.primary:hover{background:#E0C064}
.btn.ghost{color:#fff;background:transparent}
.btn.ghost:hover{background:rgba(201,168,76,.15)}
.btn.dark{color:var(--ink);border-color:var(--navy)}
.btn.dark:hover{background:var(--bg2)}

/* separadores con línea gráfica THEK */
.divider{display:flex;justify-content:center;padding-block:18px 4px}
.divider img{width:min(560px,82%);opacity:.95}

/* secciones */
.section{padding-block:56px}
.section.alt{background:var(--bg2);border-block:1px solid var(--line)}
.label{font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--goldInk)}
h2{font-family:var(--display);font-weight:800;font-size:clamp(38px,4.6vw,60px);line-height:.98;text-transform:uppercase;letter-spacing:.015em;margin:8px 0 14px;text-wrap:balance}
h3{font-family:var(--display);font-weight:700;font-size:26px;letter-spacing:.03em;text-transform:uppercase;line-height:1.05;margin:0 0 8px}
.sublead{font-size:18px;color:var(--muted);max-width:72ch;margin:0 0 22px}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);padding:22px;min-width:0}
.card p{margin:0;color:var(--muted)}
.card.accent{border-top:5px solid var(--gold)}

/* cadena del método */
.chain{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin:26px 0;border:1px solid var(--line);background:var(--panel)}
.chain div{padding:20px 18px;border-right:1px solid var(--line);position:relative;min-width:0}
.chain div:last-child{border-right:0}
.chain b{display:block;font-family:var(--display);font-weight:900;font-size:46px;line-height:1;color:var(--navy)}
.chain span{font-size:15px;color:var(--muted)}
.chain div:not(:last-child)::after{content:"→";position:absolute;right:-12px;top:50%;margin-top:-12px;width:24px;height:24px;background:var(--gold);color:#0C1532;font-weight:900;display:grid;place-items:center;font-size:14px;z-index:2}

/* fórmulas */
.fx{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--gold);padding:18px 20px;min-width:0}
.fx .tag{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--goldInk)}
.fx .eq{font-family:var(--mono);font-size:clamp(16px,1.8vw,20px);font-weight:600;margin:10px 0;overflow-x:auto;white-space:nowrap;padding-bottom:4px}
.fx p{margin:0;color:var(--muted);font-size:15px}

/* indicadores */
.kpi{background:var(--panel);border:1px solid var(--line);border-top:5px solid var(--k,var(--navy));padding:18px;min-width:0}
.kpi .lab{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.kpi .val{font-family:var(--display);font-weight:800;font-size:clamp(40px,4.4vw,58px);line-height:1;margin:8px 0 4px;font-variant-numeric:tabular-nums}
.kpi .val u{text-decoration:none;font-size:.42em;font-weight:700;color:var(--muted);margin-left:4px}
.kpi .note{font-size:14px;color:var(--muted)}

/* aviso científico */
.notice{border:2px solid var(--gold);background:color-mix(in srgb,var(--gold) 9%,var(--panel));padding:20px 22px;display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start}
.notice .ico{width:46px;height:46px;border:2px solid var(--goldInk);display:grid;place-items:center;font-family:var(--display);font-weight:900;font-size:30px;color:var(--goldInk)}
.notice h3{font-size:24px;margin-bottom:4px}
.notice p{margin:0;font-size:17px}

/* imágenes de método */
.figs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}
.figs figure{margin:0;background:var(--panel);border:1px solid var(--line)}
.figs figcaption{padding:12px 14px;font-size:14px;color:var(--muted)}

/* documentos */
.docs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.doc{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:center;background:var(--panel);border:1px solid var(--line);padding:18px;text-decoration:none;min-width:0}
.doc:hover{border-color:var(--gold)}
.doc .pdf{font-family:var(--display);font-weight:900;font-size:22px;background:var(--navyDeep);color:var(--gold);padding:12px 10px;letter-spacing:.05em}
.doc strong{display:block;font-family:var(--display);font-size:22px;text-transform:uppercase;letter-spacing:.03em;line-height:1.1}
.doc span{font-size:14px;color:var(--muted)}

/* tablas */
.tblWrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
th{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--bg2)}
td.n,th.n{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
td.src{white-space:normal;min-width:190px;color:var(--muted);font-size:14px}

.pill{display:inline-block;font-family:var(--mono);font-size:12px;font-weight:700;padding:3px 8px;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.pill.ok{background:color-mix(in srgb,var(--green) 18%,transparent);color:var(--green)}
.pill.mid{background:color-mix(in srgb,var(--amber) 20%,transparent);color:var(--amber)}
.pill.red{background:color-mix(in srgb,var(--red) 18%,transparent);color:var(--red)}

/* pie */
.footer{background:var(--navyDeep);color:#B7C2E4;border-top:4px solid var(--gold);margin-top:40px}
.footer .wrap{padding-block:34px;display:grid;grid-template-columns:auto 1fr auto;gap:26px;align-items:center}
.footer img{width:84px}
.footer strong{font-family:var(--display);font-size:26px;letter-spacing:.05em;color:#fff;display:block}
.footer .mini{font-size:14px}
.footer a{color:#E2BF62}

@media (max-width:980px){
  .hero .wrap,.hero.compact .wrap{grid-template-columns:1fr}
  .grid3,.figs{grid-template-columns:1fr 1fr}
  .grid4{grid-template-columns:1fr 1fr}
  .chain{grid-template-columns:1fr 1fr}
  .chain div:nth-child(2){border-right:0}
  .chain div:nth-child(2)::after{display:none}
  .chain div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .footer .wrap{grid-template-columns:auto 1fr}
  .nav a{font-size:17px;padding:6px 8px}
}
@media (max-width:640px){
  .grid2,.grid3,.figs,.docs{grid-template-columns:1fr}
  .grid4{grid-template-columns:1fr 1fr}
  .chain{grid-template-columns:1fr}
  .chain div{border-right:0;border-bottom:1px solid var(--line)}
  .chain div::after{display:none}
  .topbar .wrap{flex-wrap:wrap;padding-block:8px}
  .brand small{display:none}
  .nav{width:100%;justify-content:space-between}
  .notice{grid-template-columns:1fr}
  .footer .wrap{grid-template-columns:1fr}
  .kpi .val{font-size:36px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* ===== Página del modelo ===== */
.todayHead{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:16px}
.todayDate{font-family:var(--display);font-weight:800;font-size:clamp(26px,3vw,38px);text-transform:uppercase;letter-spacing:.03em}
.models{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.res{background:var(--panel);border:1px solid var(--line);border-top:6px solid var(--c);padding:18px;min-width:0}
.res h3{font-size:24px;margin:0}
.res .tag{font-family:var(--mono);font-size:12px;color:var(--muted)}
.res .z{font-family:var(--display);font-weight:800;font-size:clamp(48px,5vw,64px);line-height:1;margin:12px 0 6px;font-variant-numeric:tabular-nums}
.res .z u{text-decoration:none;font-size:.4em;color:var(--muted);margin-left:4px}
.res .row{display:flex;justify-content:space-between;align-items:center;gap:10px;font-family:var(--mono);font-size:14px;border-top:1px dashed var(--line);padding-top:8px;margin-top:8px;flex-wrap:wrap}
.res .row span:first-child{color:var(--muted)}
.res .big{font-family:var(--display);font-weight:800;font-size:28px;font-variant-numeric:tabular-nums}
.realBar{margin-top:14px;background:var(--panel);border:1px solid var(--line);border-left:6px solid var(--cReal);padding:16px 18px;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between}
.realBar .z{font-family:var(--display);font-weight:800;font-size:44px;line-height:1;font-variant-numeric:tabular-nums}
.realBar .z u{text-decoration:none;font-size:.42em;color:var(--muted);margin-left:4px}
.realBar .meta{font-size:14px;color:var(--muted);max-width:60ch}
.calcGrid{display:grid;grid-template-columns:300px 1fr;gap:18px;align-items:start}
.picker{background:var(--panel);border:1px solid var(--line);padding:18px;display:flex;flex-direction:column;gap:12px}
.picker label{font-family:var(--display);font-weight:800;font-size:26px;text-transform:uppercase;letter-spacing:.03em}
.picker input[type=date]{font-family:var(--mono);font-size:22px;font-weight:600;padding:12px;border:2px solid var(--navy);background:var(--bg);color:var(--ink);width:100%;border-radius:0}
.quick{display:flex;flex-wrap:wrap;gap:8px}
.quick button{font-family:var(--mono);font-size:13px;padding:7px 10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);cursor:pointer}
.quick button:hover{border-color:var(--gold)}
.dinfo{font-family:var(--mono);font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.dinfo b{color:var(--ink)}
.chartPanel{background:var(--panel);border:1px solid var(--line);padding:18px}
.legend{display:flex;flex-wrap:wrap;gap:8px}
.legend button{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:13px;padding:7px 11px;border:1px solid var(--line);background:var(--panel);color:var(--ink);cursor:pointer}
.legend button i{width:22px;height:4px;background:var(--c);display:block}
.legend button i.dot{width:11px;height:11px;border-radius:50%}
.legend button[aria-pressed="false"]{opacity:.4}
.chartBox{position:relative;height:clamp(340px,50vw,560px);margin-top:14px}
.chartBox.mid{height:clamp(280px,34vw,400px)}
.zones{display:flex;gap:18px;flex-wrap:wrap;margin-top:12px;font-size:14px;color:var(--muted)}
.zones span{display:flex;align-items:center;gap:6px}
.zones i{width:20px;border-top:2px dashed var(--c);display:block}
.stamp{font-family:var(--mono);font-size:13px;color:var(--muted)}
@media (max-width:980px){.models{grid-template-columns:1fr}.calcGrid{grid-template-columns:1fr}}