/* ercabrera.com — sistema de diseño (oct-2026)
   Fondo blanco, tinta fría, tomate #F15330 como único acento.
   Tipografía: Geist (texto y titulares) + Geist Mono (datos). Radios: 14px tarjetas, pill botones. */
:root{
  --paper:#FFFFFF; --paper2:#F6F7F8; --paper3:#EEF0F2;
  --ink:#121518; --ink2:#47515B; --ink3:#77818B;
  --line:#E3E6E9; --line2:#D3D8DD;
  --tom:#F15330; --tom2:#D4401F; --tomL:#FDEEE9;
  --ui:"Geist",-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Geist Mono",ui-monospace,SFMono-Regular,monospace;
  --r:14px; --sh:0 1px 2px rgba(18,21,24,.04),0 8px 28px rgba(18,21,24,.06);
  --ease:cubic-bezier(.16,1,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
section[id],header[id]{scroll-margin-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--ui);
  font-size:17.5px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  font-feature-settings:"ss01","cv11"}
img{max-width:100%;height:auto}
a{color:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.025em;text-wrap:balance}
::selection{background:var(--tom);color:#fff}
:focus-visible{outline:2px solid var(--tom);outline-offset:3px;border-radius:4px}
.w{max-width:1240px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}

/* ---------- barra ---------- */
.rc-nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s}
.rc-nav.peg{border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(18,21,24,.05)}
.rc-nav .w{display:flex;align-items:center;gap:28px;height:68px}
.mark{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);
  font-weight:600;font-size:16.5px;letter-spacing:-.02em;margin-right:auto;white-space:nowrap}
.glifo{flex:0 0 auto;width:22px;height:22px}
.glifo rect{transform-origin:50% 100%;animation:sube .55s var(--ease) both}
.glifo .e1{animation-delay:.12s}.glifo .e2{animation-delay:.22s}.glifo .e3{animation-delay:.32s}
@keyframes sube{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.rc-nav nav{display:flex;gap:26px;font-size:14.5px;color:var(--ink2)}
.rc-nav nav a{text-decoration:none;transition:color .15s}
.rc-nav nav a:hover,.rc-nav nav a[aria-current]{color:var(--ink)}
.nav-cta{font-size:14px;font-weight:600;background:var(--ink);color:#fff;padding:10px 18px;
  border-radius:999px;text-decoration:none;white-space:nowrap;transition:background .2s,transform .2s var(--ease)}
.nav-cta:hover{background:var(--tom)}
.nav-cta:active{transform:scale(.98)}
.ham{display:none;background:none;border:0;cursor:pointer;width:44px;height:44px;padding:11px;margin-right:-11px}
.ham span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .28s,opacity .2s}
.ham span+span{margin-top:6px}
.ham[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.ham[aria-expanded="true"] span:nth-child(2){opacity:0}
.ham[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.panel{position:fixed;inset:68px 0 0;z-index:59;background:var(--paper);display:flex;flex-direction:column;
  padding:24px clamp(20px,6vw,40px) 40px;gap:2px;opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.panel.abierto{opacity:1;visibility:visible}
.panel a{font-size:24px;font-weight:600;letter-spacing:-.025em;color:var(--ink);text-decoration:none;
  padding:12px 0;border-bottom:1px solid var(--line)}
.panel .destacado{margin-top:22px;border:0;background:var(--tom);color:#fff;border-radius:999px;text-align:center;padding:16px;font-size:18px}
@media(max-width:980px){.rc-nav nav,.nav-cta{display:none}.ham{display:block}body.sin-scroll{overflow:hidden}}
@media(min-width:981px){.panel{display:none}}
.flota{position:fixed;z-index:70;right:clamp(16px,3vw,28px);bottom:clamp(16px,3vw,28px);background:var(--tom);color:#fff;
  font-weight:600;font-size:14.5px;padding:14px 22px;border-radius:999px;text-decoration:none;
  box-shadow:0 10px 30px rgba(241,83,48,.32);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s,transform .3s var(--ease),visibility .3s}
.flota.ver{opacity:1;visibility:visible;transform:none}
body.sin-scroll .flota{display:none}
@media(max-width:600px){.flota{left:16px;right:16px;text-align:center;padding:16px}body{padding-bottom:84px}}

/* ---------- cabecera de página ---------- */
.cab{padding:clamp(48px,7vw,96px) 0 clamp(36px,5vw,60px);background:
  radial-gradient(1200px 380px at 85% -10%,var(--tomL),transparent 70%),var(--paper)}
.miga{font-family:var(--mono);font-size:12px;letter-spacing:.02em;color:var(--ink3);margin-bottom:22px}
.miga a{color:var(--ink3);text-decoration:none}.miga a:hover{color:var(--tom)}
.cab h1{font-size:clamp(34px,5.4vw,64px);line-height:1.05;letter-spacing:-.035em;max-width:20ch;font-weight:650}
.cab h1 em{font-style:normal;color:var(--tom)}
.cab .baja{margin-top:22px;font-size:clamp(17px,1.5vw,20px);color:var(--ink2);max-width:62ch;line-height:1.55}
.firma{margin-top:28px;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:13.5px;color:var(--ink3)}
.firma b{color:var(--ink);font-weight:600}

/* ---------- respuesta (AEO) ---------- */
.hueco{height:0}
.resp{background:var(--paper2);border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(22px,3vw,32px);max-width:820px;position:relative}
.resp::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--tom)}
.resp span{font-family:var(--mono);font-size:12px;color:var(--tom2);display:block;margin-bottom:10px}
.resp p{font-size:clamp(17px,1.5vw,20px);line-height:1.55;color:var(--ink)}

/* ---------- cuerpo ---------- */
article{padding:clamp(44px,6vw,80px) 0 clamp(40px,5vw,64px)}
.txt{max-width:70ch}
.txt>*+*{margin-top:20px}
.txt h2{font-size:clamp(26px,3.2vw,38px);line-height:1.12;margin-top:clamp(48px,6vw,72px);max-width:22ch}
.txt h2 em{font-style:normal;color:var(--tom)}
.txt h3{font-size:clamp(19px,1.8vw,22px);margin-top:clamp(30px,4vw,40px)}
.txt p{color:var(--ink2)}
.txt p strong,.txt li strong{color:var(--ink);font-weight:600}
.txt a{color:var(--tom2);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.txt a:hover{color:var(--tom)}
.txt ul,.txt ol{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:10px;color:var(--ink2)}
.txt li::marker{color:var(--tom)}
blockquote{margin:clamp(30px,4vw,44px) 0;padding:4px 0 4px clamp(18px,2.4vw,26px);border-left:3px solid var(--tom);
  font-size:clamp(20px,2vw,25px);line-height:1.4;color:var(--ink);font-weight:500;letter-spacing:-.015em;max-width:30ch}
.dato{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);
  padding:clamp(20px,3vw,28px);margin:clamp(28px,4vw,40px) 0;max-width:70ch}
.dato b{display:block;font-family:var(--mono);font-size:12px;font-weight:500;color:var(--tom2);margin-bottom:10px}
.dato p{font-size:16.5px;color:var(--ink2)}.dato p+p{margin-top:10px}
figure.dia{margin:clamp(34px,4.5vw,52px) 0;padding:0}
figure.dia svg{width:100%;height:auto;display:block;color:var(--ink)}
figure.dia figcaption{margin-top:14px;font-size:14px;color:var(--ink3);max-width:66ch}
figure.dia figcaption b{color:var(--ink2)}

/* tabla */
.tab{margin:clamp(28px,4vw,40px) 0;overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--paper)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:15px}
th{text-align:left;font-family:var(--mono);font-size:12px;color:var(--ink3);font-weight:500;padding:13px 18px;
  border-bottom:1px solid var(--line);background:var(--paper2)}
td{padding:13px 18px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top}
tr:last-child td{border-bottom:0}
td strong{color:var(--ink)}

/* faq */
.faq{margin-top:clamp(48px,6vw,72px);max-width:70ch}
.faq h2{font-size:clamp(26px,3.2vw,38px);line-height:1.12;margin:0 0 14px}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-of-type{border-top:1px solid var(--line)}
.faq summary{font-weight:600;font-size:clamp(16.5px,1.6vw,19px);letter-spacing:-.015em;padding:20px 44px 20px 0;
  cursor:pointer;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after,.faq summary::before{content:"";position:absolute;right:8px;top:50%;width:14px;height:2px;
  background:var(--tom);border-radius:2px;transform:translateY(-50%);transition:transform .25s var(--ease)}
.faq summary::before{transform:translateY(-50%) rotate(90deg)}
.faq details[open] summary::before{transform:translateY(-50%) rotate(0)}
.faq .a{padding:0 0 22px;color:var(--ink2);max-width:64ch}

/* enlaces relacionados */
.silo{margin-top:clamp(48px,6vw,72px);padding-top:clamp(28px,4vw,40px);border-top:1px solid var(--line)}
.silo h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:22px}
.silo .rej{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.silo a{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;text-decoration:none;
  display:block;transition:border-color .2s,transform .25s var(--ease),box-shadow .25s}
.silo a:hover{border-color:var(--line2);transform:translateY(-2px);box-shadow:var(--sh)}
.silo a b{display:block;font-weight:600;font-size:16.5px;letter-spacing:-.02em;color:var(--ink)}
.silo a span{display:block;font-size:14.5px;color:var(--ink2);margin-top:6px;line-height:1.5}

/* cierre */
.cierre{padding:clamp(56px,8vw,96px) 0;background:var(--paper2);border-top:1px solid var(--line)}
.cierre h2{font-size:clamp(28px,4vw,48px);line-height:1.08;letter-spacing:-.035em;max-width:18ch}
.cierre h2 em{font-style:normal;color:var(--tom)}
.cierre p{margin-top:18px;font-size:clamp(17px,1.4vw,19px);color:var(--ink2);max-width:56ch}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{font-size:15px;font-weight:600;padding:14px 26px;border-radius:999px;background:var(--tom);color:#fff;
  border:1px solid var(--tom);text-decoration:none;white-space:nowrap;transition:background .2s,transform .2s var(--ease)}
.btn:hover{background:var(--tom2);border-color:var(--tom2)}
.btn:active{transform:scale(.98)}
.btn.g{background:transparent;color:var(--ink);border-color:var(--line2)}
.btn.g:hover{background:var(--paper);border-color:var(--ink)}
@media(max-width:600px){.btns{display:grid;grid-template-columns:1fr}.btn{text-align:center}}

/* pie */
footer{background:var(--paper);border-top:1px solid var(--line);color:var(--ink3);padding:clamp(44px,6vw,72px) 0 clamp(36px,5vw,56px);font-size:14px;line-height:1.9}
footer .nom{font-size:clamp(28px,4vw,44px);font-weight:650;letter-spacing:-.04em;color:var(--ink);line-height:1;margin-bottom:18px}
footer .nom span{color:var(--tom)}
footer a{color:var(--ink2);text-decoration:none}
footer a:hover{color:var(--tom)}
footer .r{display:flex;flex-wrap:wrap;gap:6px 22px;margin-top:10px}
footer .pie-g{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
footer .pie-g h4{font-size:13px;font-weight:600;color:var(--ink);letter-spacing:0;margin-bottom:8px}
footer .pie-g a{display:block}
@media(max-width:820px){footer .pie-g{grid-template-columns:1fr 1fr}}

/* conferencias con foto */
.escenario{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:clamp(28px,4vw,40px) 0}
.escenario figure{margin:0;background:var(--paper2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.escenario img{width:100%;height:auto;display:block;aspect-ratio:3/4;object-fit:contain;background:var(--paper3)}
.escenario.anchas img{aspect-ratio:16/10;object-fit:cover;object-position:center 62%}
.escenario figcaption{padding:14px 16px 16px;font-size:14px;color:var(--ink2);line-height:1.5}
.escenario figcaption b{display:block;font-family:var(--mono);font-size:12px;font-weight:500;color:var(--tom2);margin-bottom:6px}
.retrato-lado{margin:clamp(28px,4vw,40px) 0;max-width:420px}
.retrato-lado img{width:100%;height:auto;display:block;border-radius:var(--r)}
.retrato-lado figcaption{margin-top:10px;font-size:13px;color:var(--ink3)}

/* ficha de autor */
.autor{display:grid;grid-template-columns:96px 1fr;gap:clamp(16px,3vw,26px);align-items:center;
  margin:clamp(44px,6vw,64px) 0 0;padding:clamp(20px,3vw,26px);max-width:760px;
  border:1px solid var(--line);border-radius:var(--r);background:var(--paper)}
.autor img{width:96px;height:96px;object-fit:cover;object-position:center 22%;display:block;border-radius:50%}
.autor .n{font-size:clamp(19px,2vw,22px);font-weight:650;letter-spacing:-.025em;color:var(--ink);line-height:1.1}
.autor .q{font-family:var(--mono);font-size:12px;color:var(--tom2);margin-top:6px}
.autor p{font-size:15px;color:var(--ink2);margin-top:10px;line-height:1.55}
.autor .l{margin-top:12px;display:flex;gap:16px;flex-wrap:wrap;font-size:14px}
.autor .l a{color:var(--tom2);text-decoration:underline;text-underline-offset:3px}
@media(max-width:600px){.autor{grid-template-columns:1fr}}

/* animación de entrada (solo si el usuario no pidió menos movimiento) */
/* Animación de entrada solo con CSS: el contenido es visible por defecto (Google, lectores y navegadores
   sin soporte lo ven siempre); donde existe animation-timeline aparece al entrar en pantalla. */
@media(prefers-reduced-motion:no-preference){
  @supports (animation-timeline: view()){
    .rv{animation:rv-in linear both;animation-timeline:view();animation-range:entry 0% entry 70%}
  }
}
@keyframes rv-in{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.glifo rect{animation:none}*{transition:none!important}}