@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fuentes/atkinson-hyperlegible-400.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Atkinson Hyperlegible';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fuentes/atkinson-hyperlegible-700.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Familjen Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fuentes/familjen-grotesk-600.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Familjen Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fuentes/familjen-grotesk-700.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* antivirusinternet.es: cuaderno de laboratorio. Papel milimetrado frío, tinta azul noche, subrayado de rotulador fosforito
   (solo sobre la mejor cifra medida) y rojo de corrector para los avisos. Familjen Grotesk + Atkinson Hyperlegible. Sin verde. Ver DISENO.md. */
:root{
--papel:#F4F7FB;--blanco:#FFFFFF;--cuadro:#DDE6F1;--tinta:#132544;--grafito:#4A5873;--fosforito:#FFE45C;--corrector:#C42847;--linea:#C9D5E4;--tinta-2:#1F3A66;
--f-tit:"Familjen Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;--f-txt:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",sans-serif;
--t0:1rem;--t1:1.25rem;--t2:1.5625rem;--t3:1.953rem;--t4:2.441rem;--t5:3.052rem;
--ancho:72rem;--lectura:38rem;--hueco:clamp(1rem,4vw,2rem);
--cuadricula:linear-gradient(var(--cuadro) 1px,transparent 1px) 0 0/100% 24px,linear-gradient(90deg,var(--cuadro) 1px,transparent 1px) 0 0/24px 100%;
--rotulador:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 40' preserveAspectRatio='none'%3E%3Cpath d='M3 12 C40 6 90 9 130 7 S185 5 197 9 L195 31 C150 35 100 31 60 34 S15 36 4 33 Z' fill='%23FFE45C'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--papel);color:var(--tinta);font:400 var(--t0)/1.6 var(--f-txt);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--tinta-2);text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--tinta);outline-offset:2px;border-radius:2px}
.divulga :focus-visible,.pie :focus-visible,.salto:focus-visible{outline-color:var(--fosforito)}
::selection{background:var(--fosforito);color:var(--tinta)}
th,td{font-variant-numeric:tabular-nums}
h1,h2,h3{font-family:var(--f-tit);font-weight:700;line-height:1.15;letter-spacing:-.015em;margin:0 0 .5em;text-wrap:balance}
h1{font-size:clamp(var(--t3),5vw,var(--t5))}
h2{font-size:clamp(var(--t2),3vw,var(--t3))}
h3{font-size:var(--t1);letter-spacing:0}
p{margin:0 0 1em}
.w{max-width:var(--ancho);margin:0 auto;padding:0 var(--hueco)}
.estrecho{max-width:calc(var(--lectura) + 2*var(--hueco))}
.salto{position:absolute;left:-999px;top:0;background:var(--tinta);color:#fff;padding:.6em 1em;z-index:10}
.salto:focus{left:1rem}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Rotulador fosforito: solo marca la mejor cifra medida */
mark{background:var(--rotulador) center/100% 100% no-repeat;color:inherit;padding:.05em .3em;margin:0 -.1em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
@media (forced-colors:active){mark{background:Mark;color:MarkText}}

/* Divulgación de afiliados, siempre visible */
.divulga{margin:0;background:var(--tinta);color:#DCE4F0;font-size:.875rem;line-height:1.4;padding:.45rem 0}
.divulga .w{display:block}
.divulga a{color:#fff}

/* Cabecera */
.cab{background:var(--blanco);border-bottom:2px solid var(--tinta)}
.cab-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4rem}
.marca{font-family:var(--f-tit);font-weight:700;font-size:1.3rem;color:var(--tinta);text-decoration:none;letter-spacing:-.02em;white-space:nowrap}
.marca em{font-style:normal;color:var(--grafito);font-weight:600}
.menu-b{display:none;font:700 1rem var(--f-txt);background:none;border:2px solid var(--tinta);color:var(--tinta);padding:.4rem .9rem;border-radius:4px;cursor:pointer}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.25rem 1.25rem;flex-wrap:wrap}
.nav a{color:var(--tinta);text-decoration:none;font-weight:700;padding:.4rem 0;display:inline-block;border-bottom:3px solid transparent}
.nav a:hover{border-bottom-color:var(--fosforito)}
.nav a[aria-current]{border-bottom-color:var(--tinta)}
/* Sin JavaScript el menú queda abierto y se ajusta en varias líneas */
@media (max-width:960px){
 .cab-in{flex-wrap:wrap}
 .js .cab-in{flex-wrap:nowrap}
 .js .menu-b{display:block;min-height:2.75rem}
 .js .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--blanco);border-bottom:2px solid var(--tinta);z-index:5}
 .js .nav.abierto{display:block}
 .js .nav ul{flex-direction:column;padding:.5rem var(--hueco) 1rem}
 .nav a{padding:.6rem 0}
 .cab{position:relative}
}

/* Botones de compra */
.btn-ir{display:inline-block;background:var(--tinta);color:#fff;font:700 1rem/1.2 var(--f-txt);text-decoration:none;padding:.7rem 1.1rem;border-radius:4px;border:2px solid var(--tinta);white-space:nowrap}
.btn-ir:hover{background:var(--blanco);color:var(--tinta)}
.prosa p > .btn-ir:only-child{margin:.25rem 0}
.btn-ancho{display:block;text-align:center;white-space:normal}

/* Portada: la tabla de laboratorio es el héroe */
.hero{background:var(--cuadricula),var(--papel);padding:clamp(2rem,5vw,3.5rem) 0 clamp(2rem,4vw,3rem);border-bottom:1px solid var(--linea)}
.hero h1{max-width:20ch}
.hero-lead{font-size:var(--t1);max-width:40em;line-height:1.5}
.meta{color:var(--grafito);font-size:.9375rem}
.lab{margin-top:1.75rem;background:var(--blanco);border:2px solid var(--tinta);border-radius:6px}
.lab thead th{white-space:normal;min-width:8.5rem;font-size:.875rem;line-height:1.3;vertical-align:bottom}
.lab thead th:first-child{min-width:0}
.lab table{margin:0}
.lab caption{text-align:left;font:700 var(--t1)/1.3 var(--f-tit);padding:1rem 1rem .25rem}
.lab-n{font-size:.875rem;color:var(--grafito);padding:.75rem 1rem 1rem;margin:0;border-top:1px dashed var(--linea)}
.lab th[scope=row] a{color:var(--tinta);font-family:var(--f-tit);font-size:1.0625rem}
.lab .btn-ir{padding:.45rem .8rem;font-size:.9375rem}
.nota{color:var(--grafito);font-size:.875rem}

/* Tablas */
.tabla{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.5rem}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.9375rem;background:var(--blanco)}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--linea);vertical-align:top}
thead th{font-family:var(--f-tit);font-weight:700;background:var(--papel);border-bottom:2px solid var(--tinta);white-space:nowrap}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
.prosa .tabla{border:1px solid var(--linea);border-radius:6px}

/* Secciones de portada */
.sec{padding:clamp(2.5rem,6vw,4rem) 0}
.sec + .sec{border-top:1px solid var(--linea)}
.sec-i{color:var(--grafito);max-width:40em;margin-bottom:1.5rem}
.indice{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,26rem),1fr));gap:0 2.5rem}
.indice-3{grid-template-columns:repeat(auto-fill,minmax(min(100%,19rem),1fr))}
.indice li{border-bottom:1px solid var(--linea)}
.indice a{display:grid;grid-template-columns:112px 1fr;gap:1rem;align-items:start;padding:1rem 0;color:var(--tinta);text-decoration:none}
.ind-f img{aspect-ratio:3/2;object-fit:cover;border-radius:4px;border:1px solid var(--linea)}
.ind-t strong{display:block;font:700 1.125rem/1.25 var(--f-tit);margin-bottom:.25rem}
.ind-t span{color:var(--grafito);font-size:.9375rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.indice a:hover strong{text-decoration:underline;text-decoration-color:var(--fosforito);text-decoration-thickness:4px;text-underline-offset:.15em}
@media (min-width:900px){.indice a{grid-template-columns:160px 1fr}}

/* Cara a cara: renglones X vs Y */
.vs-l{list-style:none;margin:0;padding:0;border-top:2px solid var(--tinta)}
.vs-l li{border-bottom:1px solid var(--linea)}
.vs-l a{display:grid;grid-template-columns:1fr auto 1fr;align-items:baseline;gap:1rem;padding:1rem .5rem;text-decoration:none;color:var(--tinta);font:700 clamp(1.125rem,2.6vw,var(--t2))/1.2 var(--f-tit)}
.vs-a{text-align:right}
.vs-x{font-family:var(--f-txt);font-weight:400;font-size:1rem;color:var(--grafito)}
.vs-l a:hover{background:var(--blanco)}
.vs-l a:hover .vs-x{color:var(--corrector)}

/* Cabecera de página interior */
.pg-cab{background:var(--cuadricula),var(--papel);border-bottom:1px solid var(--linea);padding:clamp(1.5rem,4vw,2.75rem) 0}
.pg-cab-in{display:grid;gap:1.5rem;align-items:center}
@media (min-width:900px){.pg-cab.con-foto .pg-cab-in{grid-template-columns:1fr 380px}}
.pg-cab h1{max-width:22ch}
.lead{font-size:var(--t1);line-height:1.5;max-width:38em}
.pg-cab-f img{border-radius:6px;border:2px solid var(--tinta);aspect-ratio:3/2;object-fit:cover}
.migas ol{list-style:none;margin:0 0 1rem;padding:0;display:flex;flex-wrap:wrap;font-size:.875rem;color:var(--grafito)}
.migas li + li::before{content:"/";margin:0 .5rem;color:var(--linea)}
.migas a{color:var(--grafito)}

/* Cuerpo */
.pg{display:grid;gap:2.5rem;padding-top:2rem;padding-bottom:3rem}
.pg-una{padding-top:2rem;padding-bottom:3rem;max-width:calc(var(--lectura) + 2*var(--hueco))}
@media (min-width:960px){.pg{grid-template-columns:minmax(0,var(--lectura)) 18rem;justify-content:space-between}}
.prosa{min-width:0}
.prosa h2{margin-top:2.25rem;scroll-margin-top:1rem}
.prosa h3{margin-top:1.5rem}
.prosa ul,.prosa ol{padding-left:1.25rem;margin:0 0 1.25rem}
.prosa li{margin-bottom:.4rem}
.prosa li::marker{color:var(--grafito)}
.aviso-af{border:1px solid var(--corrector);border-radius:4px;background:var(--blanco);padding:.75rem 1rem;font-size:.9375rem;color:var(--tinta)}

/* Lateral: resumen de ficha */
.lat{display:flex;flex-direction:column;gap:1.5rem}
@media (min-width:960px){.lat{position:sticky;top:1rem;align-self:start;max-height:calc(100vh - 2rem);overflow-y:auto}}
@media (max-width:959px){.lat{order:-1}}
.ficha-r{background:var(--blanco);border:2px solid var(--tinta);border-radius:6px;padding:1.1rem}
.ficha-t{font:700 var(--t1)/1.25 var(--f-tit);margin-bottom:.75rem}
.ficha-r dl{margin:0 0 1rem}
.ficha-r dl div{padding:.5rem 0;border-bottom:1px dashed var(--linea)}
.ficha-r dt{font-size:.8125rem;color:var(--grafito)}
.ficha-r dd{margin:0;font-weight:700;font-size:.9375rem}
.ficha-n{font-size:.8125rem;color:var(--grafito);margin:.75rem 0 0}
.toc{font-size:.9375rem;border-left:1px solid var(--tinta);padding-left:1rem}
.toc ol{margin:.5rem 0 0;padding-left:1.1rem}
.toc a{color:var(--tinta)}
@media (max-width:959px){.toc{display:none}}

/* Preguntas frecuentes */
.faq details{border-bottom:1px solid var(--linea);background:var(--blanco)}
.faq details:first-child{border-top:2px solid var(--tinta)}
.faq summary{cursor:pointer;font:700 1.0625rem/1.35 var(--f-tit);padding:1rem 2.25rem 1rem 1rem;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:1.1rem;top:1.25rem;width:.5rem;height:.5rem;border-right:2px solid var(--grafito);border-bottom:2px solid var(--grafito);transform:rotate(45deg);transition:transform .15s ease-out}
.faq details[open] summary::after{transform:rotate(-135deg);top:1.45rem}
.faq details p{padding:0 1rem 1rem;margin:0}
.mas{margin-top:1.25rem;font-weight:700}

/* Fuentes */
.fuentes{margin-top:2.5rem;padding-top:1rem;border-top:2px solid var(--tinta);font-size:.875rem;color:var(--grafito)}
.fuentes h2{font-size:var(--t1);margin-top:0}
.fuentes ul{padding-left:1.1rem}
.sec-texto .prosa h2:first-child{margin-top:0}
.sec-rel{background:var(--blanco);border-top:1px solid var(--linea)}

/* Pie */
.pie{background:var(--tinta);color:#C8D3E3;padding:3rem 0 1.5rem;font-size:.9375rem}
.pie a{color:#fff;text-decoration:none}
.pie a:hover{text-decoration:underline}
.pie .marca{color:#fff}
.pie .marca em{color:#C8D3E3}
.pie-in{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,13rem),1fr))}
.pie-m p{margin-top:.75rem;max-width:30em}
.pie strong{display:block;color:#fff;font-family:var(--f-tit);margin-bottom:.5rem}
.pie ul{list-style:none;margin:0;padding:0}
.pie li{margin:.3rem 0}
.pie-b{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.5rem 2rem;margin-top:2.5rem;padding-top:1rem;border-top:1px solid #2E4670;font-size:.8125rem}
@media print{.divulga,.cab,.pie,.lat .toc{display:none}}