/* ==========================================================================
   SX-01 · Destacados (AirPods Pro 3 · Estuches · Protector de privacidad)
   Estático por defecto; con JS + WebGL + movimiento permitido, <html> recibe
   .sx-live (desde <head>) y el bloque pasa a escena fija con pista horizontal.
   ========================================================================== */
.sx{
  --sx-bg:#F1F1F3;
  --sx-glow-x:64%;--sx-glow-y:44%;
  position:relative;z-index:2;background:var(--sx-bg);color:var(--ink);color-scheme:light;
}
.sx-stage{position:relative}
.sx-canvas{display:none}
.sx-track{display:flex;flex-direction:column}

/* ---------- escena (estático) ---------- */
.sx-scene{
  width:min(100% - 2*var(--gutter),var(--container));margin-inline:auto;
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);align-items:center;
  gap:clamp(24px,5vw,80px);padding-block:clamp(56px,8vw,120px);
}
.sx-scene + .sx-scene{border-top:1px solid var(--line-light)}
.sx + .section{border-top:1px solid var(--line-light)}   /* la sección siguiente conserva su línea divisoria */
.sx-copy{max-width:min(100%,560px)}
.sx-eyebrow{display:block;margin:0 0 1rem;font-family:var(--font-label);font-size:.64rem;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3)}
.sx-title{margin:0;font-weight:600;letter-spacing:-.04em;line-height:.98;font-size:clamp(2.3rem,4.4vw,4.3rem);text-wrap:balance;color:var(--ink)}
.sx-sub{margin:1.1rem 0 0;font-size:clamp(1rem,1.2vw,1.16rem);line-height:1.45;color:var(--ink-2);max-width:34ch;text-wrap:pretty}
.sx-link{display:inline-flex;align-items:center;gap:.45rem;margin-top:1.4rem;font-weight:600;font-size:.95rem;color:var(--ink);
  padding:.7rem 1.15rem;border-radius:var(--radius-pill);border:1px solid var(--line-light);background:rgba(255,255,255,.7);
  transition:background var(--motion-fast),border-color var(--motion-fast),transform var(--motion-fast) var(--ease-out)}
.sx-link:hover{background:#fff;border-color:rgba(17,17,20,.28);transform:translateY(-1px)}
.sx-link .arr{transition:transform var(--motion-fast) var(--ease-out)}
.sx-link:hover .arr{transform:translateX(3px)}
.sx-chip{display:none}
.sx-media{margin:0;display:grid;place-items:center;gap:1rem;min-width:0}
.sx-media picture{display:block;width:100%}
.sx-media img{width:100%;height:auto;max-height:78vh;object-fit:contain}
.sx-media.duo{grid-template-columns:1fr 1fr}
.sx-media figcaption{grid-column:1/-1;font-size:.82rem;color:var(--ink-3);text-align:center}
.sx-nav,.sx-ctrl{display:none}
@media (max-width:760px){
  .sx-scene{grid-template-columns:minmax(0,1fr);gap:28px}
}

/* ==========================================================================
   Escena fija (scroll) · html.sx-live
   ========================================================================== */
.sx-live .sx{height:calc(var(--stageH,100svh) * (1 + var(--sx-run,7.6)));
  height:round(nearest,calc(var(--stageH,100svh) * (1 + var(--sx-run,7.6))),1px)}  /* alto entero: el resto de la página no queda en medio píxel */
.sx-live .sx-stage{
  position:sticky;top:0;height:var(--stageH,100vh);height:var(--stageH,100svh);min-height:320px;overflow:hidden;overflow:clip; /* clip: el foco no puede desplazar la pista */
  background:
    radial-gradient(60% 70% at var(--sx-glow-x) var(--sx-glow-y),rgba(255,255,255,.95),rgba(255,255,255,0) 70%),
    linear-gradient(180deg,#F4F4F6 0%,#EFEFF2 55%,#E9E9EC 100%);
}
.sx-live .sx-canvas{display:block;position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none;
  opacity:0;transition:opacity .9s var(--ease-out)}
.sx-live .sx.gl-ready .sx-canvas{opacity:1}
.sx-live .sx-track{position:absolute;inset:0;z-index:2;flex-direction:row;will-change:transform}
.sx-live .sx-scene{
  flex:0 0 100%;width:100%;height:100%;margin:0;border:0;
  display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:center;column-gap:clamp(16px,3vw,48px);
  padding:calc(var(--nav-h,72px) + env(safe-area-inset-top,0px) + 2vh) max(var(--gutter),calc((100% - var(--container)) / 2)) calc(64px + 4vh);
}
.sx-live .sx-copy{max-width:none;opacity:var(--sx-vis,1);transform:translateX(calc((1 - var(--sx-vis,1)) * -24px));will-change:opacity,transform}
.sx-live .sx-media{align-self:stretch;height:100%;min-height:0;display:block;position:relative}
.sx-live .sx-media picture{position:absolute;inset:0;transition:opacity .7s var(--ease-out)}
.sx-live .sx-media picture + picture,.sx-live .sx-media figcaption{display:none}
.sx-live .sx-media img{width:100%;height:100%;max-height:none}
.sx-live .sx.gl-ready .sx-media picture{opacity:0}
.sx-live .sx-chip{display:inline-flex;align-items:center;gap:.55rem;margin:1.2rem 0 0;padding:.42rem .85rem;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--line-light);font-size:.85rem;font-weight:500;color:var(--ink-2)}
.sx-live .sx-chip .dot{width:11px;height:11px;border-radius:50%;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12);transition:background .4s var(--ease-out)}

.sx-steps{display:none}
.sx-live .sx-steps{display:flex;flex-wrap:wrap;gap:.35rem;list-style:none;margin:1.1rem 0 0;padding:0}
.sx-steps li{padding:.36rem .7rem;border-radius:var(--radius-pill);font-size:.8rem;font-weight:500;color:var(--ink-3);
  border:1px solid var(--line-light);background:rgba(255,255,255,.55);transition:color .35s,background .35s,border-color .35s}
.sx-steps li.is-on{color:var(--ink);background:#fff;border-color:rgba(17,17,20,.18)}

/* capítulos + progreso */
.sx-live .sx-nav{
  display:flex;position:absolute;z-index:3;left:50%;bottom:clamp(14px,3vh,28px);transform:translateX(-50%);
  gap:4px;padding:5px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.72);border:1px solid var(--line-light);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.sx-nav button{display:flex;flex-direction:column;align-items:stretch;gap:6px;padding:.5rem .95rem .55rem;border-radius:var(--radius-pill);
  font-size:.8rem;font-weight:500;line-height:1.1;color:var(--ink-3);min-width:clamp(84px,10vw,128px);white-space:nowrap;
  transition:color var(--motion-fast),background var(--motion-fast)}
.sx-nav button:hover{color:var(--ink)}
.sx-nav button.is-on{color:var(--ink);background:#fff;box-shadow:0 1px 3px rgba(17,17,20,.08)}
.sx-nav i{display:block;height:2px;border-radius:2px;background:rgba(17,17,20,.12);overflow:hidden}
.sx-nav b{display:block;height:100%;background:var(--ink);transform-origin:0 50%;transform:scaleX(0)}

/* reproducción en visores enmarcados (modo auto) */
.sx-auto .sx{height:auto}
.sx-auto .sx-stage{position:relative;height:var(--stageH,640px)}
.sx-auto .sx-ctrl:not([hidden]){display:flex;position:absolute;z-index:3;right:var(--gutter);bottom:clamp(14px,3vh,28px);align-items:center;gap:.6rem;
  padding:6px 12px 6px 6px;border-radius:var(--radius-pill);background:rgba(255,255,255,.72);border:1px solid var(--line-light);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.sx-ctrl button{width:32px;height:32px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:.72rem}
.sx-ctrl button::before{content:"▶"}
.sx-ctrl button.is-playing::before{content:"❚❚";letter-spacing:-1px}
.sx-ctrl input{width:clamp(90px,14vw,180px);accent-color:var(--ink)}

/* móvil y tableta vertical: texto arriba, producto abajo */
@media (max-width:760px),(max-width:1024px) and (orientation:portrait){
  .sx{--sx-glow-x:50%;--sx-glow-y:66%}
  .sx-live .sx-scene{display:flex;flex-direction:column;align-items:stretch;
    padding:calc(64px + env(safe-area-inset-top,0px) + 10px) var(--gutter) calc(70px + 2vh)}
  .sx-live .sx-copy{max-width:none}
  .sx-live .sx-title{font-size:clamp(1.9rem,8.4vw,3rem)}
  .sx-live .sx-sub{font-size:.98rem;margin-top:.7rem}
  .sx-live .sx-link{margin-top:.9rem;padding:.55rem .95rem;font-size:.88rem}
  .sx-live .sx-chip{margin-top:.8rem}
  .sx-live .sx-steps{margin-top:.7rem}
  .sx-steps li{font-size:.74rem;padding:.3rem .6rem}
  .sx-live .sx-media{flex:1 1 auto;height:auto;margin-top:8px}
  .sx-live .sx-nav{bottom:12px}
  .sx-nav button{min-width:0;padding:.45rem .7rem .5rem;font-size:.74rem}
  .sx-auto .sx-ctrl:not([hidden]){bottom:64px;right:50%;transform:translateX(50%)}
}
@media (max-width:760px) and (max-height:700px){
  .sx-live .sx-sub{display:none}
}
/* pantallas horizontales bajas (teléfono girado) */
@media (max-height:520px) and (orientation:landscape){
  .sx-live .sx-scene{padding-top:calc(56px + 6px);padding-bottom:56px}
  .sx-live .sx-nav{bottom:8px}
  .sx-live .sx-steps li{font-size:.72rem;padding:.26rem .55rem}
  .sx-live .sx-title{font-size:clamp(1.6rem,4.2vw,2.4rem)}
  .sx-live .sx-sub,.sx-live .sx-link{display:none}
}