/* V20 · Movimiento y portada. Capa sobre v15–v19. Sin librerías externas.
   Todo el movimiento se desactiva con prefers-reduced-motion. */
:root{--m20-ease:cubic-bezier(.2,.7,.1,1);--m20-ink:#183d36;--m20-paper:#f7f5f0;--m20-mint:#d7ebdf;--m20-mint-2:#9fd8bd;--m20-wine:#562b3c}

/* Barra de progreso de lectura */
.m20-progress{position:fixed;inset:0 0 auto 0;height:3px;z-index:80;transform-origin:0 50%;transform:scaleX(var(--m20-p,0));background:linear-gradient(90deg,var(--m20-mint-2),var(--m20-ink));pointer-events:none}

/* Cabecera con sombra al bajar */
.s15-header{transition:box-shadow .35s var(--m20-ease)}
.m20-scrolled .s15-header{box-shadow:0 8px 30px rgba(24,61,54,.08)}

/* Cartela de la Metaencuesta */
.m20-ribbon{display:flex;align-items:center;gap:14px;justify-content:center;padding:12px max(20px,calc((100vw - 1200px)/2));background:var(--m20-ink);color:#eef6f1;text-decoration:none;font-size:14px;line-height:1.4;position:relative;overflow:hidden;isolation:isolate}
.m20-ribbon::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(159,216,189,.22) 50%,transparent 70%);background-size:250% 100%;animation:m20-sheen 6s linear infinite}
.m20-ribbon-live{width:9px;height:9px;border-radius:50%;background:#7fe0b4;flex:none;animation:m20-pulse 2s infinite}
.m20-ribbon-tag{flex:none;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;padding:3px 9px;border-radius:999px;background:#d9e7ca;color:var(--m20-ink)}
.m20-ribbon-text strong{color:#fff}
.m20-ribbon-go{flex:none;font-weight:800;color:#bfe9d3;white-space:nowrap}
.m20-ribbon-go span{display:inline-block;transition:transform .3s var(--m20-ease)}
.m20-ribbon:hover .m20-ribbon-go span,.m20-ribbon:focus-visible .m20-ribbon-go span{transform:translateX(5px)}
.m20-ribbon:focus-visible{outline:3px solid #f4c950;outline-offset:-3px}
@media(max-width:700px){.m20-ribbon{justify-content:flex-start;font-size:13px;gap:10px;padding:11px 20px}.m20-ribbon-more{display:none}}

/* Hero: curva de fondo, palabra cambiante y dos fotos */
.m20-hero{position:relative;isolation:isolate}
.m20-curve{position:absolute;z-index:-1;right:-6%;top:50%;width:min(64vw,760px);transform:translateY(-50%);fill:none;stroke:var(--m20-mint-2);stroke-width:1.2;opacity:.55;pointer-events:none}
.m20-curve path{stroke-dasharray:var(--m20-len,4000);stroke-dashoffset:0}
.m20-rotator{display:inline-grid;vertical-align:bottom;overflow:hidden;padding-bottom:.08em}
.m20-rotator-word{display:inline-block;color:var(--m20-wine)}
.m20-rotator-word.is-out{animation:m20-word-out .42s var(--m20-ease) forwards}
.m20-rotator-word.is-in{animation:m20-word-in .55s var(--m20-ease)}
.m20-hero-media{position:relative;padding:0 0 9% 9%}
.m20-photo-main{margin:0}
.m20-photo-guitar{position:absolute;left:0;bottom:0;width:52%;margin:0;padding:8px 8px 0;background:var(--m20-paper);border-radius:6px;box-shadow:0 22px 50px rgba(24,61,54,.22);transform:rotate(-3deg) translate3d(0,var(--m20-py,0px),0);will-change:transform}
.m20-photo-guitar img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:3px}
.m20-photo-chip{margin:0;padding:9px 4px 10px;font-size:11px;line-height:1.3;color:var(--m20-ink);font-weight:700}
.m20-photo-chip span{display:inline-block;margin-right:6px;padding:2px 7px;border-radius:999px;background:var(--m20-wine);color:#fff;font-size:9px;letter-spacing:.12em;text-transform:uppercase}
@media(max-width:700px){.m20-hero-media{padding:0 0 70px 0}.m20-photo-guitar{width:62%;left:-4px}.m20-curve{right:-30%;top:12%;width:120vw;opacity:.35}}

/* Cifras */
.m20-stats dl{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:0;border-top:1px solid #c9d0c9}
.m20-stats dl>div{display:flex;flex-direction:column-reverse;justify-content:flex-end;gap:6px;padding:26px 22px 28px 0}
.m20-stats dl>div+div{padding-left:22px;border-left:1px solid #c9d0c9}
.m20-stats dd{margin:0;font-size:clamp(34px,4.4vw,58px);line-height:1;font-weight:700;letter-spacing:-.05em;color:var(--m20-ink);font-variant-numeric:tabular-nums}
.m20-stats dt{font-size:13px;line-height:1.5;color:#52635e;max-width:24ch}
@media(max-width:800px){.m20-stats dl{grid-template-columns:repeat(2,minmax(0,1fr))}.m20-stats dl>div:nth-child(3){padding-left:0;border-left:0}.m20-stats dl>div:nth-child(n+3){border-top:1px solid #c9d0c9}}

/* Cinta de logotipos */
.m20-strip-head{display:flex;justify-content:space-between;align-items:center;gap:18px}
.m20-marquee{overflow:hidden;margin-top:22px;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.m20-marquee-track{display:flex;align-items:center;gap:56px;width:max-content;margin:0;padding:6px 0;list-style:none}
.m20-marquee-track li{flex:none;display:flex;align-items:center}
.m20-marquee-track img{display:block;height:36px;width:auto;max-width:150px;object-fit:contain;filter:grayscale(1);opacity:.75;transition:filter .3s,opacity .3s}
.m20-marquee-track li:hover img{filter:none;opacity:1}
.m20-marquee.is-running .m20-marquee-track{animation:m20-marquee var(--m20-dur,40s) linear infinite}
.m20-marquee.is-running:hover .m20-marquee-track,.m20-marquee.is-running:focus-within .m20-marquee-track{animation-play-state:paused}
.m20-marquee:not(.is-running){-webkit-mask-image:none;mask-image:none}
.m20-marquee:not(.is-running) .m20-marquee-track{flex-wrap:wrap;width:auto;gap:24px 40px;justify-content:center}

/* Metaencuesta en portada */
.m20-meta-wrap{padding-block:8px}
.m20-meta .sg-meta-art path{transition:stroke-dashoffset 1.6s var(--m20-ease),fill-opacity 1s .9s}
.m20-meta .sg-meta-link span{display:inline-block;transition:transform .3s var(--m20-ease)}
.m20-meta .sg-meta-link:hover span{transform:translate(3px,-3px)}

/* Aparición al desplazarse (solo si el JS está activo y se permite el movimiento) */
.m20-motion [data-m20-reveal]{opacity:0;transform:translate3d(0,28px,0);transition:opacity .9s var(--m20-ease),transform .9s var(--m20-ease);transition-delay:calc(var(--m20-i,0) * 80ms)}
.m20-motion [data-m20-reveal].is-in{opacity:1;transform:none}
.m20-motion .m20-w{display:inline-block;opacity:0;transform:translate3d(0,.55em,0);transition:opacity .7s var(--m20-ease),transform .7s var(--m20-ease);transition-delay:calc(var(--m20-wi,0) * 45ms)}
.m20-motion .is-in .m20-w,.m20-motion .m20-w.is-in{opacity:1;transform:none}
.m20-motion .s15-hero-copy>*{animation:m20-rise .9s var(--m20-ease) both}
.m20-motion .s15-hero-copy>:nth-child(2){animation-delay:.08s}.m20-motion .s15-hero-copy>:nth-child(3){animation-delay:.16s}.m20-motion .s15-hero-copy>:nth-child(4){animation-delay:.24s}.m20-motion .s15-hero-copy>:nth-child(5){animation-delay:.32s}.m20-motion .s15-hero-copy>:nth-child(6){animation-delay:.4s}
.m20-motion .m20-photo-main{animation:m20-reveal-clip 1.2s var(--m20-ease) .1s both}
.m20-motion .m20-photo-guitar{animation:m20-pop 1s var(--m20-ease) .55s both}
.m20-motion .m20-curve path{animation:m20-draw 3.2s var(--m20-ease) .2s both}
.m20-motion .s15-button{transition:transform .35s var(--m20-ease),box-shadow .35s var(--m20-ease),background-color .25s,color .25s}
.m20-motion .s15-button:hover{transform:translate3d(var(--m20-mx,0px),calc(var(--m20-my,0px) - 2px),0);box-shadow:0 12px 28px rgba(24,61,54,.18)}
.m20-motion .s15-talk .s15-arrow{display:inline-block;transition:transform .35s var(--m20-ease)}
.m20-motion .s15-talk:hover .s15-arrow{transform:translate(6px,-6px) rotate(8deg)}
.m20-motion .s15-lab-links a{transition:transform .45s var(--m20-ease),box-shadow .45s var(--m20-ease)}
.m20-motion .s15-lab-links a:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(24,61,54,.1)}

@keyframes m20-sheen{from{background-position:120% 0}to{background-position:-130% 0}}
@keyframes m20-pulse{0%{box-shadow:0 0 0 0 rgba(127,224,180,.7)}70%{box-shadow:0 0 0 10px rgba(127,224,180,0)}100%{box-shadow:0 0 0 0 rgba(127,224,180,0)}}
@keyframes m20-word-out{to{opacity:0;transform:translate3d(0,-.7em,0)}}
@keyframes m20-word-in{from{opacity:0;transform:translate3d(0,.7em,0)}to{opacity:1;transform:none}}
@keyframes m20-marquee{to{transform:translate3d(-50%,0,0)}}
@keyframes m20-rise{from{opacity:0;transform:translate3d(0,22px,0)}to{opacity:1;transform:none}}
@keyframes m20-reveal-clip{from{clip-path:inset(12% 0 12% 0);opacity:.2;transform:scale(1.03)}to{clip-path:inset(0 0 0 0);opacity:1;transform:none}}
@keyframes m20-pop{from{opacity:0;transform:rotate(-9deg) translate3d(-20px,40px,0) scale(.92)}to{opacity:1;transform:rotate(-3deg) translate3d(0,var(--m20-py,0px),0)}}
@keyframes m20-draw{from{stroke-dashoffset:var(--m20-len,4000)}to{stroke-dashoffset:0}}

@media (prefers-reduced-motion:reduce){
  .m20-ribbon::before,.m20-ribbon-live{animation:none}
  .m20-progress{display:none}
}
@media print{.m20-ribbon,.m20-progress,.m20-curve,.m20-marquee-strip{display:none!important}}

/* Texto solo para lectores de pantalla (la clase se usaba sin estar definida en las capas actuales) */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;white-space:nowrap!important;border:0!important}
/* La curva decorativa no debe provocar desplazamiento horizontal */
.m20-hero{overflow-x:clip}
/* La cartela fija sus colores frente a reglas heredadas de texto */
.s15 .m20-ribbon,.s15 .m20-ribbon .m20-ribbon-text,.s15 .m20-ribbon .m20-ribbon-more{color:#d6e9df}
.s15 .m20-ribbon .m20-ribbon-text strong{color:#fff}
.s15 .m20-ribbon .m20-ribbon-go{color:#bfe9d3}
.s15 .m20-ribbon .m20-ribbon-tag{color:#183d36}
/* El pie de la foto principal queda a la derecha, fuera de la tarjeta de la guitarra */
.m20-hero-media .m20-photo-main figcaption{text-align:right;padding-left:60%}
.m20-photo-chip span{display:table;margin:0 0 5px}

/* Bloque de portada de la Metaencuesta (aportado por Santi) */
.sg-meta-card{max-width:1280px;margin:44px auto;padding:34px 38px;background:#1f2923;color:#f3f1e8;border-radius:18px;display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:36px;align-items:center;font-family:inherit;box-sizing:border-box}
.sg-meta-card *{box-sizing:border-box}.sg-meta-card .sg-meta-tag{font-size:11px;letter-spacing:.14em;font-weight:700;margin:0 0 12px;text-transform:uppercase;color:#c1d3b7}.sg-meta-card h2{font-size:clamp(27px,3.2vw,42px);letter-spacing:-.045em;line-height:1.08;margin:0 0 14px;color:#f3f1e8}.sg-meta-card p{max-width:700px;font-size:15px;line-height:1.65;color:#d6dfd0;margin:0 0 16px}.sg-meta-card .sg-meta-link{display:inline-flex;align-items:center;gap:15px;text-decoration:none;background:#d9e7ca;color:#1f2923;border-radius:8px;font-size:14px;font-weight:700;padding:13px 17px}.sg-meta-card .sg-meta-link:hover{background:#eef4e6}.sg-meta-card .sg-meta-link:focus-visible{outline:3px solid #fff;outline-offset:4px}.sg-meta-card .sg-meta-sig{font-size:11px;margin-top:17px;margin-bottom:0;color:#c0cdb7}.sg-meta-card .sg-meta-art{margin:0}.sg-meta-card .sg-meta-art svg{width:100%;height:auto}.sg-meta-card .sg-meta-art figcaption{font-size:9px;color:#a6b29e;line-height:1.4}.sg-meta-card .sg-meta-words{font-size:10px;letter-spacing:.09em;color:#c2d2b7;text-align:center;margin-top:5px}
@media(max-width:620px){.sg-meta-card{grid-template-columns:1fr;padding:27px 23px;margin:28px 0;gap:18px}.sg-meta-card .sg-meta-art{display:none}.sg-meta-card p{font-size:13px}.sg-meta-card .sg-meta-link{font-size:13px}}