/* «Acerca de» (acerca2): calcado de la estructura de chanel.com/about-chanel/gabrielle-chanel
   (sub‑menú en pestañas, título en mayúsculas, zona sticky de 300vh con firmas de un trazo, frase, secciones oscuras con carrusel). */
.ac-page { background: #fff; color: #1d1d1d; --ac-dark: #1d1d1d; --ac-sans: "Montserrat", "Helvetica Neue", Arial, sans-serif; }
.ac-page .site-header { position: fixed; }
.ac-main { padding-top: var(--header-h); font-family: var(--ac-sans); overflow-x: clip; }
.ac-main picture { display: block; }
.ac-main picture img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* pestañas (como .pbs-menu) */
.ac-tabs { position: sticky; top: var(--header-h); z-index: 20; background: #fff; border-top: 1px solid #ececec; }
.ac-tabs ul { display: flex; justify-content: center; gap: 1.6rem; list-style: none; margin: 0; padding: 0 1rem; overflow-x: auto; scrollbar-width: none; }
.ac-tabs li a { display: block; padding: 1rem 0 .85rem; font-size: .66rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: #8a8a8a; text-decoration: none; white-space: nowrap; border-bottom: 3px solid transparent; }
.ac-tabs li.is-active a { color: #1d1d1d; border-bottom-color: #1d1d1d; }
.ac-tabs li a:hover { color: #1d1d1d; }

/* título (como .pbs-title cc-display-l) */
.ac-title { margin: 3.6rem 0 2.4rem; text-align: center; font-family: var(--ac-sans); font-weight: 500; font-size: clamp(1.6rem, 2.9vw, 2.55rem); letter-spacing: .06em; text-transform: uppercase; line-height: 1.1; }

/* firma (como .pbs-signature): zona de scroll 300vh, contenido sticky, firmas de 270px a media altura */
.ac-sign { padding: 0 1.125rem 4.5rem; }
.ac-sign-scroll { width: 100%; max-width: 68.75rem; height: 300vh; margin: 0 auto; }
.ac-sign-sticky { position: sticky; top: calc(var(--header-h) + 3.2rem); background: #fff; }
.ac-sign-img { width: 100%; max-width: 46.875rem; margin: 0 auto; }
.ac-sign-img img { height: auto !important; object-fit: contain !important; max-height: calc(100vh - var(--header-h) - 5rem); width: auto !important; max-width: 100%; margin: 0 auto; }
.ac-sign-l { position: absolute; left: 4.375rem; top: 41%; z-index: 1; }
.ac-sign-r { position: absolute; right: 0; top: 38%; z-index: 1; }
.ac-sign-l svg, .ac-sign-r svg { display: block; width: 270px; height: auto; overflow: visible; }
.ac-sign-l path, .ac-sign-r path { fill: none; stroke: #000; stroke-linecap: round; stroke-linejoin: round; transition: stroke-dashoffset .05s; }

/* frase + texto (como .pbs-signature__content) */
.ac-quote { max-width: 37.5rem; margin: 0 auto; padding: 1rem 1.125rem 6rem; text-align: center; }
.ac-quote figure { margin: 0; display: flex; flex-direction: column; gap: 18px; }
.ac-quote blockquote { margin: 0; }
.ac-quote blockquote p { margin: 0; font-weight: 500; font-size: clamp(1.25rem, 2.1vw, 1.75rem); line-height: 1.28; letter-spacing: .05em; text-transform: uppercase; }
.ac-quote figcaption p { margin: 0 0 .25rem; font-style: italic; font-size: .8rem; line-height: 1.6; }
.ac-intro { margin: 2.25rem 0 0; font-size: .82rem; line-height: 1.75; color: #555; }

/* secciones oscuras con carrusel (como «Coco en palabras» / «Cuando Coco conoció a Chanel») */
.ac-dark { background: var(--ac-dark); color: #fff; padding: 4.2rem 0 3.4rem; }
.ac-h2 { margin: 0 0 3rem; text-align: center; font-weight: 500; font-size: clamp(1.2rem, 1.9vw, 1.6rem); letter-spacing: .06em; text-transform: uppercase; }
.ac-car { position: relative; max-width: 76rem; margin: 0 auto; padding: 0 6rem; }
.ac-car-btn { position: absolute; top: 50%; width: 44px; height: 44px; margin-top: -22px; border: 0; background: none; cursor: pointer; z-index: 3; }
.ac-car-btn::before { content: ""; position: absolute; left: 50%; top: 50%; width: 11px; height: 11px; border-left: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: translate(-30%, -50%) rotate(45deg); }
.ac-car-btn.next::before { transform: translate(-70%, -50%) rotate(-135deg); }
.ac-dark .ac-car-btn { color: #fff; }
.ac-car-btn.prev { left: 1.6rem; } .ac-car-btn.next { right: 1.6rem; }
.ac-car-count { margin: 2.6rem 0 0; text-align: center; font-size: .7rem; font-weight: 600; letter-spacing: .1em; }

.ac-words .ac-car-track { position: relative; }
.ac-word { display: none; grid-template-columns: 1fr 1fr; gap: 0 1.6rem; align-items: center; }
.ac-word.is-on { display: grid; animation: ac-fade .7s ease; }
@keyframes ac-fade { from { opacity: 0; } to { opacity: 1; } }
.ac-word-img { aspect-ratio: 3 / 4; overflow: hidden; background: #2a2a2a; }
.ac-word-img img { filter: grayscale(1); }
.ac-word-copy { position: relative; padding-top: 5.5rem; }
.ac-word-big { position: absolute; top: 0; left: -9.5rem; margin: 0; font-weight: 500; font-size: clamp(2.6rem, 5vw, 4.2rem); line-height: 1; letter-spacing: .02em; text-transform: uppercase; white-space: nowrap; color: #fff; mix-blend-mode: normal; text-shadow: 0 0 1px rgba(0,0,0,.2); }
.ac-word-lead { margin: 0 0 .9rem; font-weight: 700; font-size: .74rem; line-height: 1.45; letter-spacing: .04em; text-transform: uppercase; }
.ac-word-text { margin: 0 0 2.2rem; font-size: .76rem; line-height: 1.7; color: #e8e8e8; }
.ac-word-cap { margin: 0; font-size: .72rem; font-weight: 600; }

/* galería superpuesta (como «Coco por artistas») */
.ac-gallery { padding: 4.4rem 1.125rem 4.6rem; text-align: center; }
.ac-gal { position: relative; display: flex; justify-content: center; align-items: center; height: clamp(260px, 34vw, 470px); margin: 0 auto 3rem; max-width: 900px; }
.ac-gal-i { position: absolute; border: 0; padding: 0; cursor: zoom-in; background: #eee; overflow: hidden; }
.ac-gal-i.i0 { left: 6%; width: 24%; height: 80%; z-index: 1; }
.ac-gal-i.i1 { left: 22%; width: 56%; height: 100%; z-index: 2; }
.ac-gal-i.i2 { right: 6%; width: 24%; height: 80%; z-index: 1; }
.ac-gal.n1 .ac-gal-i.i0 { left: 22%; width: 56%; height: 100%; }
.ac-gal-i img { filter: grayscale(1); transition: transform .8s ease; }
.ac-gal-i:hover img { transform: scale(1.03); }
.ac-gal-i.i0 img, .ac-gal-i.i2 img { filter: grayscale(.2) sepia(.15); }
.ac-link { display: inline-block; font-size: .68rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: #1d1d1d; text-decoration: none; border-bottom: 1px solid #1d1d1d; padding-bottom: 3px; }

/* cronología: diapositiva central grande y vecinas asomando */
.ac-chrono .ac-car { max-width: none; padding: 0; overflow: hidden; }
.ac-chrono-track { position: relative; height: clamp(420px, 44vw, 600px); }
.ac-ch { position: absolute; top: 0; left: 50%; width: min(560px, 62vw); transform: translateX(-50%) scale(.86); opacity: 0; transition: transform .7s cubic-bezier(.22,1,.36,1), opacity .7s; text-align: center; pointer-events: none; }
.ac-ch.is-on { opacity: 1; transform: translateX(-50%); pointer-events: auto; z-index: 2; }
.ac-ch.is-prev { opacity: .55; transform: translateX(calc(-50% - min(560px, 62vw) - 4vw)); }
.ac-ch.is-next { opacity: .55; transform: translateX(calc(-50% + min(560px, 62vw) + 4vw)); }
.ac-ch.is-prev h3, .ac-ch.is-prev p, .ac-ch.is-next h3, .ac-ch.is-next p { visibility: hidden; }
.ac-ch-img { aspect-ratio: 16 / 10; overflow: hidden; background: #fff; display: flex; align-items: center; justify-content: center; }
.ac-ch-img img { filter: grayscale(1); }
.ac-ch-yr-big { color: #1d1d1d; font-weight: 500; font-size: clamp(4rem, 9vw, 7.5rem); letter-spacing: .02em; }
.ac-ch-yr { margin: 1.4rem 0 .3rem; font-size: .72rem; font-weight: 700; letter-spacing: .1em; }
.ac-ch h3 { margin: 0 0 .5rem; font-weight: 500; font-size: 1rem; letter-spacing: .06em; text-transform: uppercase; }
.ac-ch-text { margin: 0 auto; max-width: 30rem; font-size: .76rem; line-height: 1.65; color: #ddd; }
.ac-chrono .ac-car-btn { top: calc(clamp(420px, 44vw, 600px) * .3); }
.ac-chrono .ac-car-btn.prev { left: calc(50% - min(560px, 62vw) / 2 - 64px); }
.ac-chrono .ac-car-btn.next { right: calc(50% - min(560px, 62vw) / 2 - 64px); }

/* cita */
.ac-cta { padding: 5.4rem 1.125rem 6rem; text-align: center; }
.ac-btn { display: inline-block; background: #1d1d1d; color: #fff; text-decoration: none; font-size: .7rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 1rem 2.6rem; border: 1px solid #1d1d1d; }
.ac-btn:hover { background: #fff; color: #1d1d1d; }

/* lightbox */
.ac-lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(10,10,10,.92); display: flex; align-items: center; justify-content: center; padding: 4vh 4vw; cursor: zoom-out; }
.ac-lightbox img { max-width: 100%; max-height: 100%; object-fit: contain; }
.ac-lb-close { position: absolute; top: 14px; right: 18px; background: none; border: 0; color: #fff; font-size: 2.2rem; cursor: pointer; }

/* aparición suave (como .is-visible de Chanel: opacity + translateY 20px, .6s) */
.ac-rv { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.ac-rv.is-in { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .ac-sign-l { left: 0; } .ac-sign-l svg, .ac-sign-r svg { width: 210px; }
  .ac-word-big { left: -6rem; }
}
@media (max-width: 600px) {
  .ac-tabs ul { justify-content: flex-start; }
  .ac-title { margin: 2.4rem 0 1.6rem; }
  .ac-sign { padding-bottom: 2.4rem; }
  .ac-sign-scroll { height: 220vh; }
  .ac-sign-sticky { top: calc(var(--header-h) + 3.4rem); }
  .ac-sign-l { left: -.4rem; top: 54%; } .ac-sign-r { right: -.4rem; top: 30%; }
  .ac-sign-l svg, .ac-sign-r svg { width: 150px; }
  .ac-car { padding: 0 1.2rem; }
  .ac-car-btn.prev { left: 0; } .ac-car-btn.next { right: 0; }
  .ac-words .ac-car-btn { top: 32vw; }
  .ac-word.is-on { grid-template-columns: 1fr; }
  .ac-word-img { aspect-ratio: 4 / 5; margin: 0 1.6rem; }
  .ac-word-copy { padding: 0 .4rem; margin-top: -1.6rem; }
  .ac-word-big { position: relative; left: 0; margin-bottom: 1.2rem; font-size: 2.3rem; white-space: normal; }
  .ac-gal { height: 64vw; }
  .ac-ch { width: 78vw; }
  .ac-ch.is-prev { transform: translateX(calc(-50% - 78vw - 5vw)); } .ac-ch.is-next { transform: translateX(calc(-50% + 78vw + 5vw)); }
  .ac-chrono-track { height: 520px; }
  .ac-chrono .ac-car-btn { top: 22vw; } .ac-chrono .ac-car-btn.prev { left: 0; } .ac-chrono .ac-car-btn.next { right: 0; }
}
@media (prefers-reduced-motion: reduce) { .ac-rv { opacity: 1; transform: none; transition: none; } .ac-sign-scroll { height: auto; } .ac-sign-sticky { position: relative; } }
.ac-main .ac-h2, .ac-main h3, .ac-title { font-family: var(--ac-sans); }
.ac-word-img picture, .ac-ch-img picture, .ac-gal-i picture { width: 100%; height: 100%; }
@media (max-width: 600px) {
  .ac-sign-l { left: .2rem; top: 56%; } .ac-sign-r { right: .4rem; top: 34%; }
  .ac-sign-l svg, .ac-sign-r svg { width: 128px; }
}