:root{
  --ink:#13262F; --muted:#4D6068; --teal:#0F5F5C; --teal-d:#0A4644; --mint:#E3F0ED;
  --paper:#F9FBFA; --line:#C9D8D5; --amber:#F0B13A; --amber-soft:#FBEBC8;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:1rem}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.65 var(--sans)}
img{max-width:100%;height:auto}
a{color:var(--teal);text-underline-offset:.15em}
a:hover{color:var(--teal-d)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:2px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:10}
.skip:focus{left:0}
.wrap{max-width:1080px;margin:0 auto;padding:0 1.25rem}

/* Cabecera */
.top{background:#fff;border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;padding-top:.9rem;padding-bottom:.9rem}
.logo{font:700 1.45rem/1 var(--serif);color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:.55rem;min-height:44px}
.logo svg{flex:none}
.logo b{color:var(--teal)}
.cats{background:var(--teal);position:relative}
.cats ul{scroll-snap-type:x proximity}
.cats li{scroll-snap-align:start}
.cats ul{list-style:none;margin:0;padding:0;display:flex;gap:.25rem;overflow-x:auto;scrollbar-width:thin}
.cats a{display:block;padding:.7rem .85rem;color:#fff;text-decoration:none;font-size:.95rem;white-space:nowrap}
.cats a:hover,.cats a[aria-current]{background:var(--teal-d);color:#fff}

/* Portada */
.hero{padding:3rem 0 2.25rem;border-bottom:1px solid var(--line);background:linear-gradient(#fff,var(--paper))}
.hero h1{font:700 clamp(2rem,6vw,3.4rem)/1.08 var(--serif);margin:0 0 1rem;max-width:22ch;letter-spacing:-.01em}
.lead{font-size:1.15rem;color:var(--muted);max-width:52ch;margin:0 0 1.5rem}
.finder{max-width:560px;position:relative}
.finder input{width:100%;font:inherit;padding:1rem 1.1rem;border:2px solid var(--ink);border-radius:6px;background:#fff;color:var(--ink)}
.finder input::placeholder{color:#6b7c82}
.finder ul{list-style:none;margin:.5rem 0 0;padding:0;background:#fff;border:1px solid var(--line);border-radius:6px}
.finder ul:empty{display:none}
.finder li{border-bottom:1px solid var(--line)}
.finder li:last-child{border-bottom:0}
.finder li.none{padding:.8rem 1rem;color:var(--muted);font-size:.95rem}
.finder li a{display:flex;align-items:baseline;gap:.6rem;padding:.8rem 1rem;text-decoration:none;color:var(--ink)}
.finder li a:hover .t{color:var(--teal);text-decoration:underline}
.finder .t{font-weight:600}
.finder .dots{flex:1;min-width:1rem;border-bottom:2px dotted #9db3af;transform:translateY(-.25em)}
.finder .v{color:var(--muted);font-size:.95rem;white-space:nowrap}

.sec{padding:2.5rem 0}
.sec h2{font:700 1.6rem/1.2 var(--serif);margin:0 0 1.1rem}
.sec p.sub{color:var(--muted);margin:-.6rem 0 1.2rem;max-width:60ch}

/* Lista tipo tarifa: nombre ....... valor */
.tarifa{list-style:none;margin:0;padding:0}
.tarifa li{border-bottom:1px solid var(--line)}
.tarifa a{display:flex;align-items:baseline;gap:.6rem;padding:.8rem .2rem;text-decoration:none;color:var(--ink)}
.tarifa a:hover .t{color:var(--teal);text-decoration:underline}
.tarifa .t{font-weight:600}
.tarifa .dots{flex:1;min-width:1.5rem;border-bottom:2px dotted #9db3af;transform:translateY(-.25em)}
.tarifa .v{color:var(--muted);font-size:.95rem;white-space:nowrap}
.tarifa .d{display:block;color:var(--muted);font-size:.93rem;font-weight:400;margin-top:.15rem}
.tarifa a.row-d{flex-wrap:wrap}

.nota{background:var(--mint);border-left:5px solid var(--teal);padding:1.1rem 1.25rem;max-width:760px;margin:0}
.nota p{margin:.3rem 0}

/* Páginas y artículos */
.page{max-width:720px;margin:0;padding:2rem 0 3rem}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:.6rem;line-height:1.3}
.crumbs a{color:var(--muted);display:inline-block;padding:.8rem .1rem}
.page h1{font:700 clamp(1.9rem,5vw,2.7rem)/1.12 var(--serif);margin:.2rem 0 .8rem;letter-spacing:-.01em}
.page h2{font:700 1.5rem/1.25 var(--serif);margin:2.2rem 0 .6rem}
.page h3{font:700 1.2rem/1.3 var(--sans);margin:1.6rem 0 .4rem}
.meta{color:var(--muted);font-size:.95rem;margin:0 0 1.4rem}
.respuesta{background:var(--amber-soft);border-left:5px solid var(--amber);padding:1rem 1.25rem;margin:0 0 1.6rem;font-size:1.05rem}
.respuesta p{margin:0}
.page ul,.page ol{padding-left:1.3rem}
.page li{margin:.3rem 0}
.page mark{background:var(--amber-soft);padding:0 .25em;border-radius:3px;font-weight:600}
.tw{overflow-x:auto;margin:1.2rem 0;border:1px solid var(--line);border-radius:6px;background:#fff}
.tw table{border-collapse:collapse;width:100%;min-width:400px;font-size:.98rem}
.tw th,.tw td{padding:.65rem .8rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tw th{background:var(--mint);font-weight:700}
.tw tr:last-child td{border-bottom:0}
.tw td{font-variant-numeric:tabular-nums}
.aviso{font-size:.93rem;color:var(--muted);border-top:1px solid var(--line);margin-top:2.4rem;padding-top:1rem}
.relacionados{margin-top:2.4rem}
.relacionados h2{margin-top:0}
.vacio{background:#fff;border:1px dashed var(--line);padding:1.2rem;border-radius:6px;color:var(--muted);max-width:760px}

/* Pie */
.foot{background:var(--ink);color:#cfe0dd;margin-top:2rem;padding:2rem 0 2.5rem;font-size:.95rem}
.foot a{color:#fff}
.foot ul{list-style:none;margin:0 0 1rem;padding:0;display:flex;flex-wrap:wrap;gap:0 1.4rem}
.foot li a{display:inline-block;padding:.7rem 0}
.foot p{margin:.4rem 0;max-width:70ch}

@media (min-width:760px){
  body{font-size:19px}
  .hero{padding:4.5rem 0 3.25rem}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Indicador de que el menú se desliza (solo cuando no cabe) */
@media (max-width:1100px){
  .cats::after{content:"";position:absolute;right:0;top:0;bottom:0;width:36px;background:linear-gradient(to right,rgba(15,95,92,0),var(--teal));pointer-events:none}
  .cats ul{padding-right:36px}
}
/* Tablas con scroll accesibles por teclado */
.tw:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
/* Índice de contenidos */
.toc{margin:0 0 1.6rem;border:1px solid var(--line);border-radius:6px;background:#fff}
.toc summary{cursor:pointer;padding:.85rem 1rem;font-weight:600;min-height:44px;display:flex;align-items:center}
.toc ol{margin:0;padding:0 1rem 1rem 2.2rem}
.toc li{margin:.15rem 0}
.toc a{display:block;padding:.3rem 0;text-decoration:none;line-height:1.35}
.toc a:hover{text-decoration:underline}
/* Más aire en pantallas grandes */
@media (min-width:1100px){
  .page{padding-top:2.6rem}
  .page h1{font-size:2.9rem}
}
@media (min-width:1500px){ body{font-size:20px} }

/* Portada a dos columnas en escritorio */
.cols{display:grid;gap:0}
.cols h2{margin-top:0}
.cols>div+div{margin-top:2.5rem}
@media (min-width:900px){
  .cols{grid-template-columns:1fr 1fr;gap:3.5rem}
  .cols>div+div{margin-top:0}
}
/* Artículo: barra lateral con índice en escritorio */
.toc-side{display:none}
@media (min-width:1000px){
  .art-wrap{display:grid;grid-template-columns:minmax(0,720px) 270px;gap:2.5rem;align-items:start}
  .side{position:sticky;top:1rem;padding-top:3.4rem}
  .toc-inline{display:none}
  .toc-side{display:block;margin:0}
  .toc-side summary{pointer-events:none;cursor:default}
  .toc-side summary::-webkit-details-marker{display:none}
}
/* Tablas compactas en móvil */
@media (max-width:600px){
  .tw table{min-width:0;font-size:.92rem}
  .tw th,.tw td{padding:.55rem .6rem;hyphens:auto;-webkit-hyphens:auto;overflow-wrap:break-word}
}

/* Calculadoras */
[hidden]{display:none!important}
.calc{background:#fff;border:1px solid var(--line);border-radius:8px;padding:1.25rem;margin:1.5rem 0}
.calc fieldset{border:0;margin:0 0 1.2rem;padding:0;min-width:0}
.calc legend{font-weight:700;margin-bottom:.55rem;padding:0}
.opts{display:flex;flex-wrap:wrap;gap:.5rem}
.opt{display:inline-flex;position:relative}
.opt input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}
.opt span{display:inline-block;padding:.7rem 1rem;border:2px solid var(--line);border-radius:6px;min-height:44px;background:#fff;line-height:1.3}
.opt input:checked+span{border-color:var(--teal);background:var(--mint);font-weight:600}
.opt input:focus-visible+span{outline:3px solid var(--amber);outline-offset:2px}
.checks{display:grid;gap:.1rem}
.chk{display:flex;align-items:center;gap:.7rem;min-height:44px;cursor:pointer}
.chk input{width:22px;height:22px;flex:none;accent-color:var(--teal)}
.field{display:grid;gap:.3rem;margin-bottom:1rem}
.field label{font-weight:600}
.field input{font:inherit;padding:.7rem .8rem;border:2px solid var(--ink);border-radius:6px;min-height:44px;width:100%;max-width:260px;background:#fff;color:var(--ink)}
.field .hint{font-size:.9rem;color:var(--muted)}
.fields{display:grid;gap:0 2rem}
@media (min-width:700px){.fields{grid-template-columns:1fr 1fr}}
.result{background:var(--mint);border-left:5px solid var(--teal);padding:1rem 1.25rem;margin-top:1.2rem;border-radius:0 6px 6px 0}
.result p{margin:.3rem 0}
.result .big{font:700 1.9rem/1.2 var(--serif)}
.result .small{font-size:.92rem;color:var(--muted)}
.result .tw{background:#fff;margin:.8rem 0}
.result .pos{color:#0a5a2d;font-weight:700}
.result .neg{color:#8a2b0b;font-weight:700}

.result .src{display:block;font-size:.9rem;color:var(--muted);margin-top:.15rem}
.result td.nw{white-space:nowrap}
.tool{max-width:1040px!important}
.tool>:not(.calc){max-width:720px}
@media (min-width:1000px){
  form.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 2.5rem;align-items:start}
  form.calc>fieldset,form.calc>.fields{grid-column:1}
  form.calc>.result{grid-column:2;grid-row:1 / span 12;position:sticky;top:1rem;margin-top:0}
  form.calc .fields{grid-template-columns:1fr}
}