:root{
  --black:#000;
  --charcoal:#101010;
  --panel:rgba(16,16,16,.18);
  --panel-strong:rgba(8,8,8,.24);
  --white:#f7f7f7;
  --muted:#c9c9c9;
  --red:#ff2d1b;
  --red-dark:#b71910;
  --line:rgba(255,255,255,.10);
  --shadow:0 18px 55px rgba(0,0,0,.28);
  --max:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#000}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--white);background:#000;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}
.shell{width:min(calc(100% - 36px),var(--max));margin-inline:auto}
.eyebrow{margin:0;color:var(--red);font-size:.76rem;font-weight:900;letter-spacing:.24em;text-transform:uppercase}
.reveal{opacity:0;transform:translateY(28px) scale(.985);transition:opacity .78s cubic-bezier(.2,.8,.2,1),transform .78s cubic-bezier(.2,.8,.2,1)}
.reveal.visible{opacity:1;transform:none}

/* INDEX */
.entry-page{min-height:100svh;background:radial-gradient(circle at 50% 42%,rgba(255,45,27,.16),transparent 18%),linear-gradient(180deg,#000 0%,#1d1d1d 54%,#050505 100%)}
.entry-stage{position:relative;min-height:100svh;display:grid;place-items:center;padding:20px}
.entry-link{position:relative;display:grid;place-items:center;cursor:pointer;transition:transform .25s ease}.entry-link:hover,.entry-link:focus-visible{transform:scale(1.015)}
.entry-glow{position:absolute;width:min(84vw,660px);height:min(64vh,560px);border-radius:50%;background:radial-gradient(circle,rgba(255,45,27,.22),rgba(255,45,27,.04) 48%,transparent 74%);filter:blur(22px)}
.entry-spines{position:relative;width:min(86vw,650px);max-height:80svh;object-fit:contain;filter:drop-shadow(0 30px 80px rgba(0,0,0,.76))}
.entry-title{position:absolute;left:50%;top:50%;transform:translate(-50%,-12%);font-family:"Arial Black",Arial,Helvetica,sans-serif;font-weight:900;font-size:clamp(2.5rem,8.2vw,5.8rem);letter-spacing:.04em;color:var(--red);-webkit-text-stroke:.7px currentColor;text-shadow:0 10px 30px rgba(0,0,0,.62)}
.entry-legend{position:absolute;left:50%;bottom:max(18px,env(safe-area-inset-bottom));transform:translateX(-50%);width:max-content;max-width:calc(100% - 32px);color:rgba(255,255,255,.50);font-family:Arial,Helvetica,sans-serif;font-size:clamp(.60rem,1.6vw,.74rem);font-weight:400;letter-spacing:.08em;text-align:center;white-space:nowrap;pointer-events:none;z-index:5}

/* GLOBAL BACKGROUND */
.site-page{position:relative;overflow-x:hidden;background:linear-gradient(180deg,rgba(0,0,0,.12) 0%,rgba(0,0,0,.08) 55%,rgba(0,0,0,.14) 100%)}
.xray-background{position:fixed;inset:-8vh 0 -8vh;z-index:0;pointer-events:none;background:#000 url('../img/xray-spine-bg.jpg') center center / auto 118vh no-repeat;opacity:.98;filter:grayscale(1) contrast(1.24) brightness(1.10);transform:translate3d(0,var(--parallax-y,0px),0);will-change:transform}
.background-vignette{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(circle at 50% 42%,transparent 0%,rgba(0,0,0,.05) 42%,rgba(0,0,0,.28) 100%),linear-gradient(180deg,rgba(0,0,0,.04),rgba(0,0,0,.12))}
.axis-line{position:fixed;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(180deg,transparent 0%,rgba(255,45,27,.15) 12%,rgba(255,45,27,.62) 45%,rgba(255,45,27,.18) 88%,transparent 100%);z-index:0;pointer-events:none;transform:translateX(-50%)}
.story,.site-header,.site-footer,.whatsapp-fab,.scroll-progress{position:relative;z-index:1}
.story{min-height:100svh;display:flex;align-items:center;padding:110px 0;position:relative}

/* HEADER */
.site-header{position:fixed;inset:0 0 auto;z-index:100;background:linear-gradient(180deg,rgba(0,0,0,.48),rgba(0,0,0,.12) 72%,rgba(0,0,0,0));backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:.25s}
.site-header.scrolled{border-color:rgba(255,255,255,.08)}
.nav-row{height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-family:"Arial Black",Arial,Helvetica,sans-serif;font-weight:900;font-size:1.25rem;letter-spacing:.03em;color:var(--red)}
.desktop-nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.nav-pill{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:999px;background:linear-gradient(180deg,var(--red),var(--red-dark));color:#fff;font-size:.9rem;font-weight:800;box-shadow:0 10px 24px rgba(255,45,27,.20);transition:.2s}.nav-pill:hover{transform:translateY(-2px)}
.menu-toggle{display:none;width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.05);position:relative;padding:0}.menu-toggle span{position:absolute;left:12px;right:12px;height:1.7px;background:#fff;transition:.25s}.menu-toggle span:nth-child(1){top:15px}.menu-toggle span:nth-child(2){top:23px}.menu-toggle span:nth-child(3){top:31px}.menu-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}.menu-toggle.open span:nth-child(2){opacity:0}.menu-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.mobile-nav{display:none;background:rgba(0,0,0,.96);padding:6px 18px 18px;border-bottom:1px solid rgba(255,255,255,.08)}.mobile-nav a{display:block;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.08);font-weight:800}.mobile-nav.open{display:block}
.scroll-progress{position:fixed;left:0;top:0;width:100%;height:3px;z-index:130}.scroll-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--red),#ff8a7f)}

/* HERO */
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);gap:36px;align-items:center}
.hero-copy h1{margin:16px 0 10px;font-size:clamp(3.7rem,7.7vw,7.8rem);line-height:.84;letter-spacing:-.09em;font-weight:950;max-width:850px}.hero-copy h1 span{color:var(--red)}
.hero-subtitle{margin:0 0 22px;color:#fff;font-size:clamp(1.25rem,2.2vw,2rem);font-weight:800;letter-spacing:-.03em}
.lead{max-width:760px;margin:0;color:#f3de59;font-size:clamp(1rem,1.7vw,1.17rem);line-height:1.82;text-shadow:0 2px 4px rgba(0,0,0,.95),0 0 14px rgba(0,0,0,.58);font-weight:700}
.lead-box{display:inline-block;position:relative;isolation:isolate;overflow:hidden;padding:20px 22px;background:linear-gradient(145deg,rgba(20,20,20,.34),rgba(0,0,0,.14));border:1px solid rgba(255,255,255,.16);border-radius:22px;backdrop-filter:blur(16px) saturate(125%);-webkit-backdrop-filter:blur(16px) saturate(125%);box-shadow:inset 0 1px 0 rgba(255,255,255,.10),inset 0 -1px 0 rgba(255,255,255,.025),0 18px 50px rgba(0,0,0,.30),0 0 0 1px rgba(255,45,27,.025);text-shadow:0 2px 6px rgba(0,0,0,.95),0 0 18px rgba(0,0,0,.62)}
.lead-box::before{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(115deg,rgba(255,255,255,.09) 0%,rgba(255,255,255,.025) 22%,transparent 46%,rgba(255,255,255,.018) 72%,transparent 100%);pointer-events:none}
.lead-box::after{content:"";position:absolute;left:10%;right:10%;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.42),transparent);opacity:.72;pointer-events:none}

.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.cta{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 20px;border-radius:999px;font-weight:800;font-size:.94rem;transition:.2s}.cta:hover{transform:translateY(-2px)}.cta-red{background:linear-gradient(180deg,var(--red),var(--red-dark));box-shadow:0 14px 34px rgba(255,45,27,.24)}.cta-dark{border:1px solid var(--line);background:rgba(255,255,255,.05)}
.hero-callout{padding:30px;border-radius:32px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(15,15,15,.18),rgba(5,5,5,.08));backdrop-filter:blur(12px);box-shadow:var(--shadow)}
.callout-number{display:block;font-family:"Arial Black",Arial,sans-serif;font-size:clamp(4.5rem,9vw,8rem);line-height:.8;color:var(--red);letter-spacing:-.08em}.hero-callout strong{display:block;margin:24px 0 10px;font-size:1.45rem;font-weight:900}.hero-callout p{margin:0;color:#cfcfcf;line-height:1.72}
.scroll-cue{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);display:grid;justify-items:center;gap:8px;color:#aaa;font-size:.74rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase}.scroll-cue i{display:block;width:1px;height:44px;background:linear-gradient(180deg,rgba(255,255,255,.10),var(--red))}

/* PROGRAM */
.program-grid,.why-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:38px;align-items:center}
.section-heading h2,.techniques-heading h2,.final-copy h2,.qr-copy h2{margin:14px 0 0;font-size:clamp(2.8rem,5.6vw,5.8rem);line-height:.91;letter-spacing:-.075em;font-weight:950}.section-heading h2 span{color:var(--red)}
.program-copy{padding:30px;border-radius:30px;border:1px solid var(--line);background:rgba(8,8,8,.16);backdrop-filter:blur(12px);box-shadow:var(--shadow)}.program-copy>p{margin:0;color:#d1d1d1;line-height:1.9;font-size:1.03rem}
.program-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}.program-points article{padding:18px;border-radius:20px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.03)}.program-points b{display:block;color:var(--red);font-size:.72rem;letter-spacing:.18em}.program-points span{display:block;margin-top:8px;font-weight:900}

/* TECHNIQUES */
.techniques-section{display:block;padding-top:130px;padding-bottom:130px}.techniques-heading{text-align:center;max-width:950px}.techniques-heading h2{margin-inline:auto}
.technique-timeline{position:relative;margin-top:72px;display:grid;gap:52px}.technique-timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(180deg,transparent,var(--red) 8%,var(--red) 92%,transparent);transform:translateX(-50%);opacity:.65}
.technique-card{width:calc(50% - 50px);position:relative}.technique-card.left{justify-self:start}.technique-card.right{justify-self:end}.timeline-dot{position:absolute;top:28px;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:var(--red);color:#fff;font-weight:900;box-shadow:0 0 0 10px rgba(255,45,27,.08),0 18px 34px rgba(0,0,0,.30)}.technique-card.left .timeline-dot{right:-78px}.technique-card.right .timeline-dot{left:-78px}
.card-content{padding:28px 30px;border-radius:30px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(15,15,15,.16),rgba(4,4,4,.07));backdrop-filter:blur(14px);box-shadow:var(--shadow);position:relative;overflow:hidden}.card-content::after{content:"";position:absolute;right:-90px;bottom:-90px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(255,45,27,.10),transparent 66%)}.card-content h3{margin:0 0 14px;font-size:clamp(1.65rem,2.6vw,2.45rem);line-height:1;font-weight:950;letter-spacing:-.045em}.card-content h3 small{display:block;margin-top:8px;color:#aaa;font-size:.48em;font-weight:700;letter-spacing:.02em}.card-content p{margin:0;color:#d0d0d0;line-height:1.78}

/* WHY */
.why-cards{display:grid;gap:16px}.why-card{padding:26px;border-radius:28px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(16,16,16,.14),rgba(5,5,5,.06));backdrop-filter:blur(12px);box-shadow:var(--shadow)}.why-card b{display:block;color:var(--red);font-family:"Arial Black",Arial,sans-serif;font-size:2.4rem;line-height:.9}.why-card h3{margin:14px 0 8px;font-size:1.35rem;font-weight:950}.why-card p{margin:0;color:#cfcfcf;line-height:1.72}

/* FINAL + QR */
.final-message{min-height:78svh;text-align:center}.final-copy{max-width:850px;margin-inline:auto}.final-copy p:last-child{margin:20px auto 0;max-width:720px;color:#d0d0d0;font-size:1.15rem;line-height:1.75}
.qr-section{min-height:100svh}.qr-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.8fr);gap:48px;align-items:center}.qr-copy p:last-child{max-width:600px;color:#cfcfcf;line-height:1.75;font-size:1.04rem}.qr-frame{justify-self:center;width:min(78vw,460px);padding:18px;border-radius:34px;border:1px solid rgba(255,255,255,.12);background:#000;box-shadow:0 26px 80px rgba(0,0,0,.52),0 0 0 1px rgba(255,45,27,.08)}.qr-frame img{width:100%;border-radius:20px}

/* FOOTER + WHATSAPP */
.site-footer{padding:28px 0 34px;border-top:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.26)}.footer-row{display:flex;align-items:center;justify-content:space-between;gap:18px;color:#8f8f8f;font-size:.8rem}
.whatsapp-fab{position:fixed;right:16px;bottom:16px;z-index:9999;width:76px;height:76px;border-radius:50%;overflow:hidden;box-shadow:0 18px 48px rgba(0,0,0,.48),0 0 0 8px rgba(37,211,102,.08);background:#25D366;pointer-events:auto;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.whatsapp-fab::before,.whatsapp-fab::after{pointer-events:none}.whatsapp-fab img{width:100%;height:100%;object-fit:cover;object-position:center;pointer-events:none;user-select:none;-webkit-user-drag:none}

@media(max-width:1020px){
  .hero-grid,.program-grid,.why-grid,.qr-layout{grid-template-columns:1fr}
  .hero-callout{max-width:620px}
  .qr-frame{justify-self:start}
}
@media(max-width:800px){
  .desktop-nav{display:none}.menu-toggle{display:block}.nav-row{height:72px}
  .story{min-height:auto;padding:100px 0 76px}
  .hero{min-height:100svh}
  .axis-line{left:22px;transform:none;opacity:.45}
  .xray-background{background-position:center center;background-size:auto 108vh;opacity:.94}
  .hero-copy h1{font-size:clamp(3.1rem,14vw,5.4rem)}
  .section-heading h2,.techniques-heading h2,.final-copy h2,.qr-copy h2{font-size:clamp(2.35rem,11vw,4rem)}
  .program-points{grid-template-columns:1fr}
  .technique-timeline{gap:24px;margin-top:44px}
  .technique-timeline::before{left:20px;transform:none}
  .technique-card,.technique-card.left,.technique-card.right{width:100%;justify-self:stretch;padding-left:48px}
  .timeline-dot,.technique-card.left .timeline-dot,.technique-card.right .timeline-dot{left:-7px;right:auto;top:22px;width:48px;height:48px}
  .card-content{padding:24px}
  .qr-frame{justify-self:center;width:min(88vw,420px)}
  .entry-spines{width:min(96vw,560px)}
  .entry-title{font-size:clamp(2rem,10vw,3.8rem)}
  .entry-legend{font-size:.58rem;letter-spacing:.04em;white-space:normal;width:calc(100% - 28px)}
  .whatsapp-fab{width:70px;height:70px;right:14px;bottom:14px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.xray-background{transform:none!important}.reveal{opacity:1;transform:none;transition:none}}

/* V14.5 — columna protagonista */
.qr-layout.qr-only{display:flex;justify-content:center;align-items:center;width:100%;}
.qr-only .qr-frame{justify-self:auto;margin-inline:auto;}
@media(max-width:1020px){.qr-layout.qr-only{display:flex}.qr-only .qr-frame{justify-self:auto}}

@media(max-width:800px){.lead-box{display:block;padding:16px 17px;border-radius:19px;backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%)}}