/* =========================================================================
   Arletex Design System v3.5 — Telas Para Invierno (/telas/telas-para-invierno)
   Hoja editorial por página. Prefijo de clase y de token: inv- / --inv-*.
   Tokens locales con fallback a --ax-* global y, si no, a hex del sistema.
   ─────────────────────────────────────────────────────────────────────────
   El "invierno" es el TEMA, no el chrome: la marca sigue siendo orange/ink/
   paper. Se conserva TODO el SEO (meta, schema, headings h1/h2/h3), las
   keywords en <strong>, los enlaces internos y las imágenes del original.
   Se respeta ≥55% blanco; el ink es puntuación (navideña + CTA final).

   Mapa de secciones (registro · apertura · marco · fondo · hover):
     01 Intro            Vitrina    · Dossier/eyebrow    · Top-rule  · white · press
     02 Envíos (banner)  Galería    · figura-link        · tight     · white · lift
     03 Telas invierno   Periódico  · DropCap + video    · Double    · paper · side/lift
     04 Ideales/Calientes Periódico · RunIn + Zigzag     · —         · white · lift
     05 Beneficios (inc) —          · —                  · tight     · paper · —
     06 Tipos (3 cards)  Dossier    · NumberProtagonist  · Index-tab · white · lift-orange
     07 Rollos (banner)  Galería    · figura-link        · tight     · white · lift
     08 Flannel (ficha)  Técnico    · LabelLateral+spec  · Side-rule · cream · side/press
     09 Video (include)  —          · —                  · tight     · white · —
     10 Usos (brick)     Galería    · IndexRow + Brick   · —         · paper · lift
     11 Navideña         Fanzine    · MegaTextBg + burst · Bleed     · INK   · press/lift
     12 FAQ              Dossier    · RunIn + <details>  · Top-rule  · white · side (ax-faq.js)
     13 Dónde comprar    Carta      · Postmark           · Side-rule · cream · lift/ghost
     14 CTA final        Manifiesto · MegaTextBg         · Bleed     · INK   · press
   ========================================================================= */

/* ─── Tokens locales + reset de caja (scoped) ──────────────────────────── */
.inv-page,
.inv-section {
    --inv-ink:           var(--ax-ink, #1F2530);
    --inv-paper:         var(--ax-paper, #FAF6EE);
    --inv-cream:         var(--ax-cream, #F2EDE4);
    --inv-white:         var(--ax-white, #FFFFFF);
    --inv-orange:        var(--ax-orange, #F15A29);
    --inv-orange-deep:   var(--ax-orange-deep, #B0401A);
    --inv-purple:        var(--ax-purple, #6A52A2);
    --inv-yellow:        var(--ax-yellow, #FFEB3B);
    --inv-muted:         var(--ax-muted, #6E6A60);
    --inv-muted-dark:    var(--ax-muted-dark, #A8A39A);
    --inv-rule:          rgba(31, 37, 48, 0.16);
    --inv-rule-on-dark:  rgba(250, 246, 238, 0.18);
    --inv-whatsapp:      var(--ax-whatsapp, #25D366);
    --inv-font-display:  var(--ax-font-display, 'Anton', 'Arial Narrow', sans-serif);
    --inv-font-accent:   var(--ax-font-accent, 'Fraunces', Georgia, serif);
    --inv-font-body:     var(--ax-font-body, 'Lato', system-ui, sans-serif);
    --inv-font-mono:     var(--ax-font-mono, 'JetBrains Mono', ui-monospace, monospace);

    --inv-ease:          cubic-bezier(0.22, 1, 0.36, 1);
    --inv-motion-fast:   0.16s;
}

/* Envuelve solo las secciones rediseñadas (NO el slide/breadcrumb legacy).
   overflow-x:clip contiene sombras offset y mega-text sin romper el sticky
   de la FAQ (clip en X deja el eje Y visible para position:sticky). */
.inv-page { overflow-x: clip; }
.inv-page *,
.inv-page *::before,
.inv-page *::after { box-sizing: border-box; }

/* Anclas (#inv-tipos, #inv-faq…) por debajo del header fixed (113/104/158px) */
.inv-section[id] { scroll-margin-top: 116px; }

/* ─── Section base ──────────────────────────────────────────────────────── */
.inv-section {
    width: 100%;
    position: relative;
    background: var(--inv-white);
    color: var(--inv-ink);
    font-family: var(--inv-font-body);
    padding: clamp(48px, 8vw, 96px) 0;
}
.inv-section--paper { background: var(--inv-paper); }
.inv-section--cream { background: var(--inv-cream); color: var(--inv-ink); }
.inv-section--tight { padding: clamp(26px, 4vw, 44px) 0; }

.inv-container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 48px);
}
.inv-container--narrow { max-width: 760px; }

/* ─── Eyebrow stamp (rectángulo recto — firma editorial, radius 0) ──────── */
.inv-eyebrow {
    font-family: var(--inv-font-accent);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.1vw, 1.15rem);
    color: var(--inv-muted);
    line-height: 1.4;
    margin: 0 0 clamp(16px, 2vw, 22px);
    display: inline-flex;
    align-items: baseline;
    gap: 0.65rem;
    flex-wrap: wrap;
}
.inv-eyebrow[data-stamp]:not([data-stamp=""])::before {
    content: attr(data-stamp);
    font-family: var(--inv-font-display);
    font-style: normal;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    line-height: 1;
    border: 1px solid var(--inv-orange);
    color: var(--inv-orange);
    flex-shrink: 0;
}

/* ─── Display title Anton + <em> Fraunces (voz humana, N-04/N-05) ───────── */
.inv-title {
    font-family: var(--inv-font-display);
    font-weight: 400;
    text-transform: uppercase;
    color: var(--inv-ink);
    line-height: 0.92;
    letter-spacing: -0.005em;
    margin: 0;
}
.inv-title--xl { font-size: clamp(2.6rem, 7.5vw, 5.75rem) !important; }
.inv-title--md { font-size: clamp(1.9rem, 4.4vw, 3.3rem) !important; }
.inv-title--sm { font-size: clamp(1.55rem, 3.4vw, 2.5rem) !important; }
.inv-title--xs { font-size: clamp(1.3rem, 2.6vw, 1.95rem) !important; }
.inv-title em {
    font-family: var(--inv-font-accent);
    font-style: italic;
    font-weight: 400;
    text-transform: lowercase;          /* la <em> Fraunces va recta y minúscula */
    letter-spacing: -0.025em;
    color: var(--inv-orange);
}
.inv-title a { color: inherit; text-decoration: none; transition: color var(--inv-motion-fast) var(--inv-ease); }
.inv-title a:hover { color: var(--inv-orange); }

/* ─── Lead / prosa ──────────────────────────────────────────────────────── */
.inv-lead {
    font-family: var(--inv-font-body);
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    line-height: 1.65;
    color: var(--inv-ink);
    max-width: 66ch;
    margin: 0;
}
.inv-lead strong { font-weight: 800; }
.inv-lead a {
    color: var(--inv-ink);
    text-decoration: underline;
    text-decoration-color: var(--inv-orange);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
    transition: color var(--inv-motion-fast) var(--inv-ease);
}
.inv-lead a:hover { color: var(--inv-orange); }

/* HighlightedAccent — stamp Anton uppercase sobre naranja, dentro de párrafo
   (distinto del <em> Fraunces de los titulares). §10.5 */
.inv-highlight {
    font-style: normal;
    background: var(--inv-orange);
    color: var(--inv-ink);
    padding: 1px 9px;
    font-family: var(--inv-font-display);
    font-size: 0.9em;
    letter-spacing: 0.03em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
}

.inv-prose { max-width: 74ch; }
.inv-prose p {
    font-family: var(--inv-font-body);
    font-size: clamp(1rem, 1.25vw, 1.12rem);
    line-height: 1.7;
    color: var(--inv-ink);
    margin: 0 0 1.1em;
}
.inv-prose p:last-child { margin-bottom: 0; }
.inv-prose strong { font-weight: 800; }
.inv-prose a {
    color: var(--inv-ink);
    text-decoration: underline;
    text-decoration-color: var(--inv-orange);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
    transition: text-underline-offset var(--inv-motion-fast) var(--inv-ease),
                color var(--inv-motion-fast) var(--inv-ease);
}
.inv-prose a:hover { color: var(--inv-orange); text-underline-offset: 4px; }

/* ─── Acciones + CTA WhatsApp chunky (press-chunky · sombra sólida · radius 0) ─ */
.inv-actions {
    margin-top: clamp(26px, 4vw, 38px);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}
.inv-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 30px;
    min-height: 44px;
    font-family: var(--inv-font-display);
    font-size: clamp(1.05rem, 1.6vw, 1.35rem);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    line-height: 1.05;
    text-decoration: none;
    border: 2px solid var(--inv-ink);
    border-radius: 0;
    cursor: pointer;
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease);
}
.inv-cta--whatsapp {
    background: var(--inv-whatsapp);
    color: #fff;
    box-shadow: 8px 8px 0 var(--inv-ink);
}
.inv-cta--whatsapp i { font-size: 1.3em; line-height: 1; }
.inv-cta--whatsapp:hover {
    transform: translate(-3px, -3px);
    box-shadow: 11px 11px 0 var(--inv-ink);
    color: #fff;
    text-decoration: none;
}
.inv-cta--whatsapp:active {
    transform: translate(2px, 2px);
    box-shadow: 4px 4px 0 var(--inv-ink);
}
.inv-cta:focus-visible { outline: 3px solid var(--inv-orange); outline-offset: 3px; }
/* Variante compacta — evita CTAs gigantes idénticos repetidos por sección */
.inv-cta--sm { padding: 12px 22px; font-size: clamp(0.95rem, 1.3vw, 1.12rem); box-shadow: 6px 6px 0 var(--inv-ink); }
.inv-cta--sm:hover  { box-shadow: 8px 8px 0 var(--inv-ink); }
.inv-cta--sm:active { box-shadow: 3px 3px 0 var(--inv-ink); }

/* ─── Botón (navegación a otra TSG / ver producto) ──────────────────────── */
.inv-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 13px 26px;
    min-height: 44px;
    font-family: var(--inv-font-body);
    font-weight: 700;
    font-size: 0.92rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    border: 2px solid var(--inv-ink);
    border-radius: 0;
    cursor: pointer;
    color: var(--inv-ink);
    background: transparent;
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease),
                background var(--inv-motion-fast) var(--inv-ease),
                color var(--inv-motion-fast) var(--inv-ease);
}
.inv-btn i { transition: transform var(--inv-motion-fast) var(--inv-ease); }
.inv-btn--outline:hover { background: var(--inv-ink); color: var(--inv-white); text-decoration: none; }
.inv-btn--outline:hover i { transform: translateX(4px); }
.inv-btn--solid {
    background: var(--inv-orange);
    color: #fff;
    border-color: var(--inv-ink);
    box-shadow: 0 6px 0 var(--inv-orange-deep);
}
.inv-btn--solid:hover { transform: translateY(-3px); box-shadow: 0 9px 0 var(--inv-orange-deep); color: #fff; }
.inv-btn--solid:hover i { transform: translateX(4px); }
.inv-btn--solid:active { transform: translateY(2px); box-shadow: 0 3px 0 var(--inv-orange-deep); }
.inv-btn:focus-visible { outline: 3px solid var(--inv-orange); outline-offset: 3px; }

/* ─── Figura editorial (Galería · frame-chunky · radius 0) ─────────────── */
.inv-figure {
    margin: 0;
    background: var(--inv-white);
    border: 2px solid var(--inv-ink);
    border-top: 3px solid var(--inv-orange);
    box-shadow: 10px 10px 0 var(--inv-ink);
    line-height: 0;
}
.inv-figure img { display: block; width: 100%; height: auto; }
.inv-figure--link { display: block; transition: transform var(--inv-motion-fast) var(--inv-ease), box-shadow var(--inv-motion-fast) var(--inv-ease); }
.inv-figure--link:hover { transform: translate(-4px, -4px); box-shadow: 14px 14px 0 var(--inv-orange); }

/* Video responsivo enmarcado (16:9 sin CLS) — reutilizado en intro y usos */
.inv-video {
    position: relative;
    aspect-ratio: 16 / 9;
    margin: 0;
    overflow: hidden;
    background: var(--inv-ink);
    border: 2px solid var(--inv-ink);
    border-top: 3px solid var(--inv-orange);
    box-shadow: 10px 10px 0 var(--inv-ink);
}
.inv-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ─── Interlink billboard (Galería/Vitrina · split clicable · lift-orange) ──
   Banner de enlace interno a otra TSG (Tela Fieltro). Toda la tarjeta es <a>;
   media a la izquierda, cuerpo editorial + cue a la derecha. */
.inv-interlink {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    background: var(--inv-white);
    border: 2px solid var(--inv-ink);
    border-top: 3px solid var(--inv-orange);
    box-shadow: 10px 10px 0 var(--inv-ink);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease);
}
.inv-interlink:hover,
.inv-interlink:focus-visible {
    transform: translate(-4px, -4px);
    box-shadow: 14px 14px 0 var(--inv-orange);
    color: inherit;
    text-decoration: none;
}
.inv-interlink__media {
    position: relative;
    margin: 0;
    overflow: hidden;
    border-right: 3px solid var(--inv-orange);
    min-height: 240px;
    line-height: 0;
    background: var(--inv-cream);
}
.inv-interlink__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.45s var(--inv-ease);
}
.inv-interlink:hover .inv-interlink__media img { transform: scale(1.05); }
.inv-interlink__body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(24px, 4vw, 48px) clamp(22px, 4vw, 52px);
}
.inv-interlink__body .inv-eyebrow { margin-bottom: clamp(10px, 1.4vw, 14px); }
.inv-interlink__body .inv-title { margin-bottom: clamp(12px, 1.6vw, 16px); }
.inv-interlink__text {
    font-family: var(--inv-font-body);
    font-size: clamp(1rem, 1.3vw, 1.15rem);
    line-height: 1.6;
    color: var(--inv-muted);
    max-width: 54ch;
    margin: 0 0 clamp(20px, 3vw, 26px);
}
.inv-interlink__text strong { color: var(--inv-ink); font-weight: 800; }
.inv-interlink__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-family: var(--inv-font-body);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--inv-orange);
}
.inv-interlink__cta i { transition: transform var(--inv-motion-fast) var(--inv-ease); }
.inv-interlink:hover .inv-interlink__cta i,
.inv-interlink:focus-visible .inv-interlink__cta i { transform: translateX(4px); }
@media (max-width: 820px) {
    .inv-interlink { grid-template-columns: 1fr; }
    .inv-interlink__media {
        order: 0;
        aspect-ratio: 16 / 9;
        min-height: 0;
        border-right: 0;
        border-bottom: 3px solid var(--inv-orange);
    }
}
@media (max-width: 575px) {
    .inv-interlink { box-shadow: 6px 6px 0 var(--inv-ink); }
    .inv-interlink:hover, .inv-interlink:focus-visible { box-shadow: 9px 9px 0 var(--inv-orange); }
}
@media (prefers-reduced-motion: reduce) {
    .inv-interlink:hover, .inv-interlink:focus-visible { transform: none; }
    .inv-interlink:hover .inv-interlink__media img { transform: none; }
    .inv-interlink:hover .inv-interlink__cta i,
    .inv-interlink:focus-visible .inv-interlink__cta i { transform: none; }
}

/* =========================================================================
   01 · Intro — Vitrina · eyebrow + H1 + lead + CTA · Top-rule orange · white
   ========================================================================= */
.inv-section--intro {
    border-top: 3px solid var(--inv-orange);
    padding-top: clamp(40px, 6vw, 72px);
}
.inv-hero__head { margin-bottom: clamp(18px, 2.6vw, 26px); }
.inv-hero__head .inv-title { max-width: 15ch; margin-top: clamp(6px, 1vw, 10px); }
.inv-section--intro .inv-lead { max-width: 60ch; }

/* ─── Apertura Dossier (eyebrow + título + rule 2px ink) ─────────────────── */
.inv-header--dossier {
    margin-bottom: clamp(28px, 4vw, 44px);
    padding-bottom: clamp(16px, 2.5vw, 24px);
    border-bottom: 2px solid var(--inv-ink);
}
.inv-header--dossier .inv-prose,
.inv-header--dossier .inv-lead { margin-top: clamp(14px, 2vw, 20px); }
.inv-arthead { margin-bottom: clamp(22px, 3vw, 32px); }
.inv-arthead .inv-title { margin-top: 8px; }

/* ─── Apertura RunInHeadline (eyebrow inline + em-dash + título, hairline) ─ */
.inv-runin {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: clamp(0.5rem, 1.5vw, 1rem);
    margin-bottom: clamp(22px, 3vw, 34px);
    padding-bottom: clamp(14px, 2vw, 20px);
    border-bottom: 1px solid var(--inv-rule);
}
.inv-eyebrow--inline { margin: 0; }
.inv-runin__divider {
    font-family: var(--inv-font-accent);
    font-style: italic;
    color: var(--inv-orange);
    font-size: 1.5em;
    line-height: 1;
    flex-shrink: 0;
}
@media (max-width: 600px) {
    .inv-runin { gap: 0.5rem; }
    .inv-runin__divider { display: none; }
}

/* =========================================================================
   03 · Telas De Invierno — Periódico · DropCap · Double-rule · paper + video
   ========================================================================= */
.inv-section--double-rule {
    border-top: 1px solid var(--inv-rule);
    border-bottom: 1px solid var(--inv-rule);
}
.inv-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
}
.inv-split__text { min-width: 0; }
.inv-split__media { min-width: 0; margin: 0; }
@media (max-width: 900px) {
    .inv-split { grid-template-columns: 1fr; gap: clamp(24px, 5vw, 36px); }
}
.inv-dropcap {
    max-width: 62ch;
    font-family: var(--inv-font-body);
    font-size: clamp(1.05rem, 1.4vw, 1.22rem);
    line-height: 1.62;
    color: var(--inv-ink);
    margin: 0 0 1.1em;
}
.inv-dropcap:last-child { margin-bottom: 0; }
.inv-dropcap__cap {
    float: left;
    font-family: var(--inv-font-accent);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(3.6rem, 8vw, 5.6rem);
    line-height: 0.8;
    color: var(--inv-orange);
    padding: 0.08em 0.12em 0 0;
    margin-top: 0.04em;
}
.inv-dropcap strong { font-weight: 800; }

/* =========================================================================
   04 · Ideales / Calientes — Periódico · Zigzag (imagen alterna) · white
   ========================================================================= */
.inv-zigzag .inv-zz {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
}
.inv-zigzag .inv-zz + .inv-zz { margin-top: clamp(48px, 8vw, 100px); }
.inv-zz__text  { min-width: 0; }
.inv-zz__media { order: 2; margin: 0; }
.inv-zz--rev .inv-zz__text  { order: 2; }
.inv-zz--rev .inv-zz__media { order: 1; }
.inv-zz__text .inv-title   { margin-bottom: clamp(16px, 2vw, 22px); }
.inv-zz__text .inv-prose   { max-width: 60ch; }
.inv-zz__text .inv-actions { margin-top: clamp(22px, 3vw, 30px); }
@media (max-width: 860px) {
    .inv-zigzag .inv-zz { grid-template-columns: 1fr; gap: clamp(22px, 5vw, 32px); }
    .inv-zz__media, .inv-zz--rev .inv-zz__media,
    .inv-zz__text,  .inv-zz--rev .inv-zz__text { order: 0; }
    .inv-zigzag .inv-zz + .inv-zz { margin-top: clamp(40px, 9vw, 56px); }
}

/* =========================================================================
   06 · Tipos de tela (Dossier · NumberProtagonist · Index-tab) — 3 cards
   ========================================================================= */
.inv-numhead {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(0.75rem, 2vw, 1.25rem);
    align-items: end;
    margin-bottom: clamp(20px, 3vw, 30px);
    padding-bottom: clamp(18px, 2.5vw, 26px);
    border-bottom: 1px solid var(--inv-rule);
}
@media (min-width: 768px) {
    .inv-numhead { grid-template-columns: minmax(0, auto) minmax(0, 1fr); gap: clamp(1.75rem, 4vw, 3.5rem); }
}
.inv-numhead__num {
    font-family: var(--inv-font-display);
    font-size: clamp(4.25rem, 13vw, 8rem);
    line-height: 0.8;
    letter-spacing: -0.04em;
    color: var(--inv-orange);
    font-variant-numeric: tabular-nums;
    display: inline-flex;
    align-items: baseline;
    gap: 0.35em;
}
.inv-numhead__num small {
    font-family: var(--inv-font-accent);
    font-style: italic;
    font-size: 0.2em;
    letter-spacing: 0;
    text-transform: lowercase;
    color: var(--inv-muted);
}
.inv-numhead__body { min-width: 0; }
.inv-numhead__body .inv-eyebrow { margin-bottom: clamp(10px, 1.4vw, 14px); }
.inv-numhead__body .inv-title { line-height: 0.95; }

/* Index-tab — pestaña de archivador (mono) montada sobre el rule superior */
.inv-section--tipos { border-top: 2px solid var(--inv-ink); }
.inv-tab {
    position: absolute;
    top: 0;
    left: clamp(20px, 4vw, 48px);
    transform: translateY(-100%);
    background: var(--inv-ink);
    color: var(--inv-paper);
    font-family: var(--inv-font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 6px 14px;
}
.inv-tipos-intro { margin: clamp(6px, 1.5vw, 12px) 0 clamp(34px, 5vw, 52px); max-width: 82ch; }

.inv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 2.4vw, 32px);
}
@media (max-width: 900px) { .inv-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .inv-grid { grid-template-columns: 1fr; } }

/* ─── Card · lift-orange (sombra ink reposo → orange al hover) ───────────── */
.inv-card {
    display: flex;
    flex-direction: column;
    background: var(--inv-white);
    color: var(--inv-ink);
    border: 1px solid var(--inv-rule);
    border-top: 3px solid var(--inv-orange);
    border-radius: 0;
    box-shadow: 4px 4px 0 var(--inv-ink);
    overflow: hidden;
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease);
}
.inv-card:hover,
.inv-card:focus-within {
    transform: translate(-4px, -4px);
    box-shadow: 8px 8px 0 var(--inv-orange);
}
.inv-card__media {
    display: block;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    line-height: 0;
    border-bottom: 1px solid var(--inv-rule);
    background: var(--inv-cream);
}
.inv-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.45s var(--inv-ease);
}
.inv-card:hover .inv-card__media img,
.inv-card:focus-within .inv-card__media img { transform: scale(1.045); }
.inv-card__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: clamp(18px, 2vw, 24px);
}
.inv-card__title {
    font-family: var(--inv-font-display);
    font-weight: 400;
    text-transform: uppercase;
    font-size: clamp(1.4rem, 2.4vw, 1.85rem);
    line-height: 1;
    letter-spacing: 0.005em;
    color: var(--inv-ink);
    margin: 0;
}
.inv-card__title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--inv-motion-fast) var(--inv-ease);
}
.inv-card__title a:hover { color: var(--inv-orange); }
.inv-card__desc {
    font-family: var(--inv-font-body);
    font-size: clamp(0.92rem, 1.05vw, 1rem);
    line-height: 1.55;
    color: var(--inv-muted);
    margin: 0;
}
.inv-card__desc strong { color: var(--inv-ink); font-weight: 700; }
.inv-card__desc a {
    color: var(--inv-ink);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--inv-orange);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
    transition: color var(--inv-motion-fast) var(--inv-ease);
}
.inv-card__desc a:hover { color: var(--inv-orange); }
.inv-card__foot { margin-top: auto; padding-top: clamp(12px, 1.8vw, 16px); }

/* ─── Chips de telas sugeridas (preservan los enlaces internos SEO) ─────── */
.inv-tags {
    margin: auto 0 0;
    padding: clamp(12px, 1.8vw, 16px) 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    border-top: 1px dashed var(--inv-rule);
}
.inv-tags__label {
    flex-basis: 100%;
    font-family: var(--inv-font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--inv-muted);
    margin-bottom: 2px;
}
.inv-chip {
    display: inline-flex;
    align-items: center;
    font-family: var(--inv-font-body);
    font-weight: 700;
    font-size: 0.74rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--inv-ink);
    background: var(--inv-cream);
    border: 1px solid var(--inv-ink);
    border-radius: 0;
    padding: 6px 11px;
    line-height: 1;
    transition: background var(--inv-motion-fast) var(--inv-ease),
                color var(--inv-motion-fast) var(--inv-ease);
}
.inv-chip:hover { background: var(--inv-ink); color: var(--inv-paper); text-decoration: none; }

/* =========================================================================
   08 · Tela Flannel — Técnico · LabelLateral · Side-rule orange · cream
   ========================================================================= */
.inv-section--tech .inv-container { border-left: 3px solid var(--inv-orange); }
@media (max-width: 640px) {
    .inv-section--tech .inv-container {
        border-left: 0;
        border-top: 3px solid var(--inv-orange);
        padding-top: clamp(22px, 5vw, 30px);
    }
}
.inv-lathead {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: clamp(1rem, 3vw, 2.5rem);
    align-items: start;
    margin-bottom: clamp(28px, 4vw, 44px);
}
.inv-lathead__rail {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    display: flex;
    align-items: center;
    align-self: stretch;
}
.inv-lathead__rail-mono {
    font-family: var(--inv-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--inv-muted);
    white-space: nowrap;
}
.inv-lathead__body { min-width: 0; }
.inv-lathead__body .inv-eyebrow { margin-bottom: clamp(10px, 1.4vw, 14px); }
@media (max-width: 640px) {
    .inv-lathead { grid-template-columns: 1fr; gap: 0.5rem; }
    .inv-lathead__rail { writing-mode: horizontal-tb; transform: none; align-self: start; }
}

/* Ficha técnica — dl con dt mono + dd Lato, hairlines (Técnico) */
.inv-spec {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin: 0 0 clamp(24px, 3vw, 34px);
    border-top: 1px solid var(--inv-rule);
}
.inv-spec__row {
    display: grid;
    grid-template-columns: minmax(0, 0.4fr) minmax(0, 1fr);
    gap: clamp(0.75rem, 2vw, 1.5rem);
    align-items: baseline;
    padding: clamp(12px, 1.6vw, 16px) 0;
    border-bottom: 1px solid var(--inv-rule);
}
.inv-spec__dt {
    font-family: var(--inv-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--inv-muted);
    margin: 0;
}
.inv-spec__dd {
    font-family: var(--inv-font-body);
    font-size: clamp(0.95rem, 1.1vw, 1.05rem);
    line-height: 1.5;
    color: var(--inv-ink);
    margin: 0;
}
.inv-spec__dd strong { font-weight: 800; }
.inv-spec__dd a {
    color: var(--inv-ink); font-weight: 700;
    text-decoration: underline; text-decoration-color: var(--inv-orange);
    text-decoration-thickness: 2px; text-underline-offset: 2px;
    transition: color var(--inv-motion-fast) var(--inv-ease);
}
.inv-spec__dd a:hover { color: var(--inv-orange); }

/* Formatos de flannel (rollo / mayoreo / precio) — trío de features flat */
.inv-featrow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 2.4vw, 30px);
    margin-top: clamp(30px, 4vw, 48px);
}
@media (max-width: 860px) { .inv-featrow { grid-template-columns: 1fr; gap: clamp(28px, 6vw, 40px); } }
.inv-feat { display: flex; flex-direction: column; }
.inv-feat .inv-figure { margin: 0 0 clamp(16px, 2.2vw, 22px); box-shadow: 6px 6px 0 var(--inv-ink); }
.inv-feat .inv-figure--link:hover { box-shadow: 10px 10px 0 var(--inv-orange); }
.inv-feat__title {
    font-family: var(--inv-font-display);
    font-weight: 400;
    text-transform: uppercase;
    font-size: clamp(1.3rem, 2.2vw, 1.65rem);
    line-height: 1;
    color: var(--inv-ink);
    margin: 0 0 clamp(8px, 1.2vw, 12px);
}
.inv-feat__title a { color: inherit; text-decoration: none; transition: color var(--inv-motion-fast) var(--inv-ease); }
.inv-feat__title a:hover { color: var(--inv-orange); }
.inv-feat__desc {
    font-family: var(--inv-font-body);
    font-size: clamp(0.95rem, 1.1vw, 1.02rem);
    line-height: 1.6;
    color: var(--inv-muted);
    margin: 0 0 clamp(14px, 2vw, 18px);
}
.inv-feat__desc strong { color: var(--inv-ink); font-weight: 700; }
.inv-feat__cta { margin-top: auto; }

/* =========================================================================
   10 · Usos de invierno — Galería · IndexRow · Brick masonry · paper
   ========================================================================= */
.inv-indexhead {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin-bottom: clamp(6px, 1.5vw, 12px);
    padding-bottom: clamp(14px, 2vw, 20px);
    border-bottom: 2px solid var(--inv-ink);
}
.inv-indexhead__leader {
    flex: 1 1 auto;
    align-self: flex-end;
    margin-bottom: 0.4em;
    border-bottom: 3px dotted var(--inv-rule);
}
.inv-indexhead__tally {
    flex: 0 0 auto;
    font-family: var(--inv-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--inv-muted);
    white-space: nowrap;
}
@media (max-width: 560px) {
    .inv-indexhead { flex-wrap: wrap; }
    .inv-indexhead__leader { display: none; }
    .inv-indexhead__tally { flex-basis: 100%; }
}
.inv-usos-intro { margin: clamp(8px, 1.5vw, 14px) 0 clamp(34px, 5vw, 52px); max-width: 78ch; }

.inv-brick {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 1fr;
    gap: clamp(18px, 2vw, 26px);
}
.inv-brick__wide { grid-column: span 2; }
@media (max-width: 860px) {
    .inv-brick { grid-template-columns: repeat(2, 1fr); }
    .inv-brick__wide { grid-column: span 2; }
}
@media (max-width: 560px) {
    .inv-brick { grid-template-columns: 1fr; }
    .inv-brick__wide { grid-column: auto; }
}
/* La card ancha muestra media + texto lado a lado en desktop */
@media (min-width: 861px) {
    .inv-brick__wide { flex-direction: row; }
    .inv-brick__wide .inv-card__media { aspect-ratio: auto; flex: 0 0 46%; border-bottom: 0; border-right: 1px solid var(--inv-rule); }
    .inv-brick__wide .inv-card__body { justify-content: center; }
}

/* =========================================================================
   11 · Navideña — Fanzine · MegaTextBg + burst · INK (puntuación dramática)
   ========================================================================= */
.inv-section--ink {
    background: var(--inv-ink);
    color: var(--inv-paper);
    overflow: hidden;
}
.inv-section--ink::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(250, 246, 238, 0.045) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(250, 246, 238, 0.045) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}
.inv-section--ink > .inv-container { position: relative; z-index: 1; }
.inv-section--ink .inv-title { color: var(--inv-paper); }
.inv-section--ink .inv-eyebrow { color: rgba(250, 246, 238, 0.6); }
.inv-section--ink .inv-lead { color: rgba(250, 246, 238, 0.82); }
.inv-section--ink .inv-lead strong { color: var(--inv-paper); }
.inv-section--ink .inv-prose p { color: rgba(250, 246, 238, 0.82); }
.inv-section--ink .inv-prose strong { color: var(--inv-paper); }
.inv-section--ink .inv-prose a { color: var(--inv-paper); }
.inv-section--ink .inv-prose a:hover { color: var(--inv-orange); }
.inv-section--ink .inv-figure { border-color: var(--inv-orange); }
/* CTA WhatsApp: el borde ink desaparece sobre ink → reancla con paper + sombra orange */
.inv-section--ink .inv-cta--whatsapp {
    border-color: var(--inv-paper);
    box-shadow: 8px 8px 0 var(--inv-orange);
}
.inv-section--ink .inv-cta--whatsapp:hover  { transform: translate(-3px, -3px); box-shadow: 11px 11px 0 var(--inv-orange); }
.inv-section--ink .inv-cta--whatsapp:active { transform: translate(2px, 2px); box-shadow: 4px 4px 0 var(--inv-orange); }

.inv-megahead {
    position: relative;
    isolation: isolate;
    padding-top: clamp(24px, 6vw, 72px);
    margin-bottom: clamp(20px, 3vw, 32px);
}
.inv-megahead__bg {
    position: absolute;
    top: 0;
    left: 0;
    font-family: var(--inv-font-display);
    font-size: clamp(4.5rem, 18vw, 13rem);
    line-height: 0.78;
    letter-spacing: -0.03em;
    text-transform: uppercase;
    color: var(--inv-rule-on-dark);
    white-space: nowrap;
    pointer-events: none;
    z-index: -1;
}
.inv-megahead__fg { position: relative; max-width: 38ch; }

/* Burst amarillo — única señal yellow de la página (Fanzine ≥1 burst) */
.inv-burst {
    position: absolute;
    top: clamp(-6px, 1vw, 10px);
    right: 0;
    z-index: 2;
    width: clamp(86px, 11vw, 116px);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    text-align: center;
    background: var(--inv-yellow);
    color: var(--inv-ink);
    font-family: var(--inv-font-display);
    font-size: clamp(12px, 1.5vw, 16px);
    text-transform: uppercase;
    line-height: 1.05;
    letter-spacing: 0.02em;
    border: 2px solid var(--inv-ink);
    border-radius: 9999px;            /* pill: única excepción al radius 0 */
    transform: rotate(-8deg);
    padding: 12px;
    pointer-events: none;
}
@media (max-width: 860px) { .inv-burst { position: static; transform: rotate(-6deg); margin: 0 0 18px; } }

/* Cabecera navideña — Fanzine con burst anclado (sin mega-text: el mega-text
   fantasma se reserva al CTA final, §9.2 máx 1 por página). */
.inv-xmas-head {
    position: relative;
    margin-bottom: clamp(20px, 3vw, 30px);
    padding-right: clamp(0px, 12vw, 150px);   /* deja aire para el burst top-right */
}
.inv-xmas-head .inv-title a { color: inherit; text-decoration: none; transition: color var(--inv-motion-fast) var(--inv-ease); }
.inv-xmas-head .inv-title a:hover { color: var(--inv-orange); }
@media (max-width: 860px) { .inv-xmas-head { padding-right: 0; } }

/* Grid navideño de aplicaciones (cards on-dark, hover lift-orange) */
.inv-xmas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(18px, 2vw, 26px);
    margin-top: clamp(30px, 4vw, 48px);
}
@media (max-width: 900px) { .inv-xmas-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .inv-xmas-grid { grid-template-columns: 1fr; } }
.inv-card--on-dark {
    background: rgba(250, 246, 238, 0.05);
    border: 1px solid var(--inv-rule-on-dark);
    border-top: 3px solid var(--inv-orange);
    box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.35);
}
.inv-card--on-dark:hover,
.inv-card--on-dark:focus-within { box-shadow: 8px 8px 0 var(--inv-orange); }
.inv-card--on-dark .inv-card__media { border-bottom-color: var(--inv-rule-on-dark); background: rgba(0,0,0,0.25); }
.inv-card--on-dark .inv-card__title { color: var(--inv-paper); }
.inv-card--on-dark .inv-card__title a { color: var(--inv-paper); }
.inv-card--on-dark .inv-card__title a:hover { color: var(--inv-orange); }
.inv-card--on-dark .inv-card__desc { color: var(--inv-muted-dark); }
.inv-card--on-dark .inv-card__desc strong { color: var(--inv-paper); }
.inv-card--on-dark .inv-card__desc a { color: var(--inv-paper); text-decoration-color: var(--inv-orange); }
.inv-card--on-dark .inv-card__desc a:hover { color: var(--inv-orange); }

/* =========================================================================
   12 · FAQ · Dossier · Top-rule orange · 2 columnas + acordeón <details>
   El contenido siempre está en el DOM (SEO intacto). ax-faq.js anima; sin
   JS, <details> nativo sigue funcional.
   ========================================================================= */
.inv-section--faq { border-top: 3px solid var(--inv-orange); }
.inv-faqsec__grid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); align-items: start; }
@media (min-width: 940px) {
    .inv-faqsec__grid { grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr); }
    .inv-faqsec__aside { position: sticky; top: 130px; }
}
.inv-faqsec__note {
    font-family: var(--inv-font-accent);
    font-style: italic;
    color: var(--inv-muted);
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    line-height: 1.5;
    max-width: 42ch;
    margin: clamp(1.25rem, 2.5vw, 1.75rem) 0;
}
.inv-reveal { overflow: hidden; }            /* recorta la altura durante la animación de ax-faq.js */
.inv-faq { display: flex; flex-direction: column; gap: 12px; }
.inv-faq__item {
    background: var(--inv-white);
    border: 1.5px solid var(--inv-rule);
    transition: border-color var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease);
}
.inv-faq__item:hover { border-color: var(--inv-ink); }
.inv-faq__item[open] {
    border-color: var(--inv-ink);
    border-left: 4px solid var(--inv-orange);
    box-shadow: 5px 5px 0 var(--inv-ink);
}
.inv-faq__q {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: clamp(15px, 2vw, 19px) clamp(16px, 2.2vw, 22px);
}
.inv-faq__q::-webkit-details-marker { display: none; }
.inv-faq__q-text {
    font-family: var(--inv-font-body);
    font-weight: 700;
    font-size: clamp(0.98rem, 1.4vw, 1.12rem);
    line-height: 1.35;
    color: var(--inv-ink);
    margin: 0;
    transition: color var(--inv-motion-fast) var(--inv-ease);
}
.inv-faq__q::after {
    content: '+';
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    font-family: var(--inv-font-display);
    font-size: 1.35rem;
    line-height: 1;
    background: var(--inv-cream);
    color: var(--inv-orange);
    border: 1.5px solid var(--inv-ink);
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                background var(--inv-motion-fast) var(--inv-ease),
                color var(--inv-motion-fast) var(--inv-ease);
}
.inv-faq__item[open] .inv-faq__q-text { color: var(--inv-orange); }
.inv-faq__item[open] .inv-faq__q::after {
    transform: rotate(45deg);
    background: var(--inv-orange);
    color: var(--inv-paper);
    border-color: var(--inv-orange);
}
.inv-faq__a {
    font-family: var(--inv-font-body);
    font-size: clamp(0.95rem, 1.1vw, 1.0625rem);
    line-height: 1.65;
    color: var(--inv-muted);
    max-width: 70ch;
    padding: 0 clamp(16px, 2.2vw, 22px) clamp(16px, 2.2vw, 20px);
    margin: 0;
}
.inv-faq__a strong { color: var(--inv-ink); font-weight: 700; }
.inv-faq__a a {
    color: var(--inv-ink);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--inv-orange);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

/* =========================================================================
   13 · Dónde comprar — Carta · Postmark · Side-rule izq. · cream
   ========================================================================= */
.inv-section--letter .inv-container { border-left: 3px solid var(--inv-orange); }
@media (max-width: 640px) {
    .inv-section--letter .inv-container {
        border-left: 0; border-top: 3px solid var(--inv-orange);
        padding-top: clamp(22px, 5vw, 30px);
    }
}
.inv-letter__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(28px, 5vw, 56px);
    align-items: center;
}
@media (min-width: 900px) { .inv-letter__grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); } }
.inv-postmark {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin: 0 0 clamp(16px, 2vw, 22px);
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--inv-rule);
    font-family: var(--inv-font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--inv-muted);
}
.inv-postmark__sep { color: var(--inv-orange); }
.inv-maps {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: clamp(20px, 3vw, 28px);
    font-family: var(--inv-font-body);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--inv-ink);
    border: 2px solid var(--inv-ink);
    padding: 10px 18px;
    background: var(--inv-white);
    transition: transform var(--inv-motion-fast) var(--inv-ease),
                box-shadow var(--inv-motion-fast) var(--inv-ease);
    box-shadow: 5px 5px 0 var(--inv-ink);
}
.inv-maps img { width: 34px; height: auto; display: block; }
.inv-maps:hover { transform: translate(-3px, -3px); box-shadow: 8px 8px 0 var(--inv-orange); color: var(--inv-ink); text-decoration: none; }

/* =========================================================================
   14 · CTA final — Manifiesto · MegaTextBg · Bleed + INK
   ========================================================================= */
.inv-section--cta { text-align: left; }
.inv-section--cta .inv-megahead__fg { max-width: 26ch; }
.inv-section--cta .inv-title { max-width: 20ch; }
.inv-section--cta .inv-lead { color: rgba(250, 246, 238, 0.82); margin-top: clamp(14px, 2vw, 20px); }

/* =========================================================================
   Reveal sutil al entrar (decorativo · progressive enhancement).
   Solo navegadores con scroll-driven animations; el resto ve el contenido
   estático (sin fallback JS, como recomienda la guía para efectos decorativos).
   ========================================================================= */
@media (prefers-reduced-motion: no-preference) {
    @supports ((animation-timeline: view()) and (animation-range: entry)) {
        @keyframes inv-rise { from { opacity: 0; transform: translateY(26px); } }
        .inv-rise {
            animation: inv-rise 0.8s var(--inv-ease) backwards;
            animation-timeline: view();
            animation-range: entry 0% cover 30%;
        }
    }
}

/* =========================================================================
   Accesibilidad — focus visible global + motion safe
   ========================================================================= */
.inv-page :focus-visible {
    outline: 3px solid var(--inv-orange);
    outline-offset: 3px;
    border-radius: 0;
}
.inv-section--ink :focus-visible { outline-color: var(--inv-yellow); }

@media (prefers-reduced-motion: reduce) {
    .inv-page *,
    .inv-page *::before,
    .inv-page *::after {
        transition-duration: 0ms !important;
        animation-duration: 0ms !important;
    }
    .inv-cta:hover, .inv-cta:active,
    .inv-card:hover, .inv-card:focus-within,
    .inv-figure--link:hover,
    .inv-maps:hover,
    .inv-btn--solid:hover, .inv-btn--solid:active { transform: none; }
    .inv-card:hover .inv-card__media img { transform: none; }
}

/* ─── Refinamiento móvil (sombras más discretas para no saturar) ────────── */
@media (max-width: 575px) {
    .inv-cta--whatsapp { box-shadow: 6px 6px 0 var(--inv-ink); }
    .inv-cta--whatsapp:hover { box-shadow: 8px 8px 0 var(--inv-ink); }
    .inv-figure { box-shadow: 6px 6px 0 var(--inv-ink); }
    .inv-card { box-shadow: 3px 3px 0 var(--inv-ink); }
    .inv-card:hover, .inv-card:focus-within { box-shadow: 6px 6px 0 var(--inv-orange); }
    .inv-video { box-shadow: 6px 6px 0 var(--inv-ink); }
    .inv-section--ink .inv-cta--whatsapp { box-shadow: 6px 6px 0 var(--inv-orange); }
    .inv-section--ink .inv-cta--whatsapp:hover { box-shadow: 8px 8px 0 var(--inv-orange); }
    .inv-maps { box-shadow: 4px 4px 0 var(--inv-ink); }
}