/* Trutina-Divulgación — brand system v1.0
   Oxford Blue #0B1D3A · Antique Ivory #F7F4EB · Muted Brass #C8A97E (acento) · Warm Charcoal #3A3B3C
   Tipografía: EB Garamond (títulos) · Montserrat (cuerpo/UI). Brass solo como acento. */

:root{
  --ink:#0B1D3A;      /* navy — texto y marca */
  --ink-2:#12294D;    /* navy claro — hover/acciones */
  --paper:#F7F4EB;    /* ivory — fondo por defecto */
  --paper-2:#FCFAF3;  /* ivory claro — paneles */
  --card:#FFFFFF;
  --teal:#0B1D3A;     /* alias de acción → navy (CTAs/enlaces) */
  --teal-d:#12294D;
  --brass:#C8A97E;    /* acento: comillas, líneas divisorias */
  --slate:#3A3B3C;    /* charcoal — texto secundario/interfaz */
  --line:#E7E0D0;
  --maxw:1120px;
  --text:68ch;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Montserrat",system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--brass)}
a:hover{color:var(--ink-2);text-decoration-color:var(--ink-2)}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px;border-radius:2px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.prose{max-width:var(--text)}

h1,h2,h3{font-family:"EB Garamond",Georgia,"Times New Roman",serif;font-weight:600;line-height:1.14;letter-spacing:0;color:var(--ink);margin:0 0 .45em}
h1{font-size:clamp(2.3rem,5.2vw,3.7rem);line-height:1.08}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin-top:0}
h3{font-size:1.32rem}
p{margin:0 0 1.05em}
.lead{font-size:1.2rem;color:var(--ink);line-height:1.55}
.muted{color:var(--slate)}
strong{font-weight:600}

.trace{font-family:"Montserrat",sans-serif;font-weight:500;font-size:.74em;letter-spacing:.02em;color:var(--ink);background:#F1E9D8;border:1px solid var(--brass);border-radius:999px;padding:.12em .6em;white-space:nowrap}

.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 90%,transparent);backdrop-filter:saturate(1.05) blur(8px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center}
.brand:hover{text-decoration:none}
.brand img{height:34px;width:auto;display:block}
.nav{margin-left:auto;display:flex;align-items:center;gap:24px}
.nav a{color:var(--ink);font-size:.98rem;text-decoration:none}
.nav a:hover{text-decoration:underline;text-decoration-color:var(--brass)}
.nav a.cta{color:#fff}
.nav a.cta:hover{text-decoration:none}
.nav .navlink{display:none}
@media(min-width:820px){.nav .navlink{display:inline}}

.btn{display:inline-block;font-weight:600;font-size:1rem;line-height:1;padding:.9em 1.35em;border-radius:8px;border:1px solid transparent;cursor:pointer;text-decoration:none;transition:background .15s,border-color .15s}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-2);color:#fff;text-decoration:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--brass)}
.btn-ghost:hover{background:#F1E9D8;text-decoration:none}

section{padding:64px 0}
.section-tight{padding:44px 0}
.rule{height:1px;background:var(--line);border:0;margin:0}
.kicker{font-family:"Montserrat",sans-serif;font-weight:600;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--brass);margin:0 0 .9em}

.hero{padding:76px 0 40px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media(min-width:900px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}}
.hero h1{margin-bottom:.35em}
.hero .lead{margin-bottom:1.6em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero-note{margin-top:1.4em;font-size:.95rem;color:var(--slate)}

.video{position:relative;width:100%;aspect-ratio:16/9;background:#0B1D3A;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-cap{margin-top:.7em;font-size:.9rem;color:var(--slate)}

.video-portrait{position:relative;width:100%;max-width:316px;aspect-ratio:9/16;margin:0 auto;background:#0B1D3A;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:0 1px 0 rgba(11,29,58,.04),0 22px 46px -26px rgba(11,29,58,.5)}
.video-portrait video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#0B1D3A}
.video-portrait iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#0B1D3A}

.gallery{display:grid;grid-template-columns:1fr;gap:22px;margin-top:26px}
@media(min-width:620px){.gallery{grid-template-columns:repeat(3,1fr)}}
.gallery .video-portrait{max-width:100%;margin:0}

.steps{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:760px){.steps{grid-template-columns:repeat(3,1fr);gap:28px}}
.step{padding-top:20px;border-top:2px solid var(--brass)}
.step .n{font-family:"EB Garamond",serif;font-size:1.05rem;color:var(--ink);font-weight:600}
.step h3{margin:.25em 0 .35em}
.step p{font-size:1rem;color:var(--slate);margin:0}

.panel{background:var(--paper-2);border:1px solid var(--line);border-radius:14px;padding:36px}
.tether{width:100%;max-width:520px;margin:8px 0 4px}

.creds{display:grid;gap:18px}
@media(min-width:680px){.creds{grid-template-columns:1fr 1fr;gap:28px}}
.cred{padding:22px 24px;background:var(--card);border:1px solid var(--line);border-radius:12px}
.cred .role{font-size:.92rem;color:var(--slate);margin-top:.25em}

.cta-band{background:var(--ink);color:#EDE7D8}
.cta-band h2{color:#fff}
.cta-band .lead{color:#D6CFBD}
.cta-band .price{font-family:"EB Garamond",serif;font-size:1.2rem;color:var(--brass);margin:0 0 1.4em}
.cta-band a.btn-primary{background:var(--brass);color:#0B1D3A}
.cta-band a.btn-primary:hover{background:#D8BC93;color:#0B1D3A}

.article{padding:56px 0}
.article .prose h2{margin-top:1.7em}
.article .prose h3{margin-top:1.4em}
.article .prose ul{padding-left:1.15em;margin:0 0 1.1em}
.article .prose li{margin:.35em 0}
.article .prose .callout{background:var(--paper-2);border-left:3px solid var(--brass);border-radius:0 8px 8px 0;padding:16px 20px;margin:1.4em 0;color:var(--ink)}
.article .prose .callout p:last-child{margin-bottom:0}
.toc{font-size:.95rem;color:var(--slate);border:1px solid var(--line);border-radius:10px;padding:16px 20px;background:var(--paper-2);margin:0 0 2em}
.toc a{color:var(--ink)}
.toc strong{display:block;color:var(--ink);margin-bottom:.4em;font-weight:600}

.site-foot{background:var(--ink);color:#B9C2D2;padding:52px 0 40px;font-size:.95rem}
.site-foot .wrap{display:grid;gap:28px}
@media(min-width:760px){.site-foot .wrap{grid-template-columns:1.4fr 1fr 1fr}}
.site-foot h4{color:#fff;font-family:"Montserrat",sans-serif;font-size:.95rem;margin:0 0 .8em}
.site-foot a{color:#D6CFBD;display:block;margin:.3em 0;text-decoration:none}
.site-foot a:hover{text-decoration:underline;text-decoration-color:var(--brass)}
.site-foot .fine{color:#8793A8;font-size:.86rem;margin-top:1em}
.fbrand-logo{height:36px;width:auto;margin-bottom:.7em}

.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:12px;background:#fff;color:var(--ink);padding:8px 14px;border-radius:6px;z-index:50}