@font-face{font-family:Manrope;src:url('../fonts/manrope-variable.woff2') format('woff2');font-weight:200 800;font-style:normal;font-display:swap}

:root{
  --ink:#101b49;
  --ink-soft:#425078;
  --purple:#a84fc6;
  --purple-deep:#783394;
  --lilac:#f3e7f8;
  --orange:#f28b18;
  --teal:#0f8b8d;
  --teal-deep:#0b6668;
  --yellow:#e8b23d;
  --amber:#d97a1f;
  --red:#b8452b;
  --amber-50:#fdf7ee;
  --paper:#fff;
  --mist:#f6f8fb;
  --slate:#eef1f6;
  --line:rgba(16,27,73,.12);
  --shadow:0 20px 50px rgba(16,27,73,.10);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Manrope,system-ui,sans-serif;line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit}
p{margin:0 0 1.15rem}
ul{margin:0}
.skip-link{position:fixed;z-index:99;top:1rem;left:1rem;padding:.75rem 1rem;background:var(--ink);color:#fff;transform:translateY(-160%);border-radius:.6rem;text-decoration:none}
.skip-link:focus{transform:none}

/* Header */
.site-header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(1.2rem,4vw,5rem);position:absolute;z-index:5;width:100%;color:var(--ink)}
.brand{display:inline-flex;align-items:center;text-decoration:none}
.brand-logo{display:block;width:clamp(142px,16vw,184px);height:auto}
.header-link{font-size:.78rem;text-decoration:none;text-transform:uppercase;letter-spacing:.1em;font-weight:750;border-bottom:1px solid currentColor;padding-bottom:.15rem}
.button:focus-visible,.header-link:focus-visible,.brand:focus-visible,.chip-toggle:focus-visible,.scroll-cue:focus-visible{outline:3px solid var(--orange);outline-offset:4px}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:.8rem 1.5rem;border-radius:.7rem;background:var(--ink);color:#fff;text-decoration:none;font-weight:750;box-shadow:0 10px 24px rgba(16,27,73,.16);transition:transform .2s,box-shadow .2s;border:1px solid transparent;font-size:.95rem}
.button:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(16,27,73,.22)}
.button-outline{background:transparent;color:var(--ink);border:1.5px solid var(--ink);box-shadow:none}
.button-outline:hover{background:var(--ink);color:#fff}
.button-light{background:#fff;color:var(--teal-deep);box-shadow:none}
.button-teal{background:var(--teal);box-shadow:0 10px 24px rgba(15,139,141,.28)}
.button-teal:hover{background:var(--teal-deep)}
.button-sm{min-height:44px;padding:.6rem 1.1rem;font-size:.85rem}

/* Layout helpers */
.section{padding:clamp(4rem,9vw,7.5rem) clamp(1.2rem,5vw,6rem)}
.section-heading{max-width:680px;margin-bottom:2.4rem}
.section-heading.centered{margin-inline:auto;text-align:center}
.eyebrow{margin-bottom:.9rem;color:var(--teal-deep);font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.16em}
h1,h2,h3{letter-spacing:-.03em;margin:0 0 1rem}
.section-heading h2{font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.08;margin-bottom:1rem}
.section-heading p{color:var(--ink-soft);font-size:1.02rem}
.fine-print{font-size:.78rem;color:#6b7593}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#fff 55%,var(--mist));padding:7rem clamp(1.2rem,4vw,5rem) 4.5rem;display:grid;gap:2.5rem}
.hero-copy{position:relative;z-index:2;max-width:640px}
.hero h1{font-size:clamp(2.1rem,6.2vw,3.6rem);line-height:1.06;letter-spacing:-.04em;margin:0 0 1.2rem;max-width:15ch}
.hero-lead{font-size:1.1rem;color:var(--ink-soft);max-width:46ch}
.hero-offer{display:flex;flex-wrap:wrap;gap:.7rem;list-style:none;padding:0;margin:1.6rem 0}
.hero-offer li{display:flex;align-items:baseline;gap:.5rem;padding:.85rem 1.1rem;border:1px solid var(--line);border-radius:.85rem;background:#fff;box-shadow:var(--shadow)}
.hero-offer li strong{font-size:1.35rem;letter-spacing:-.03em;color:var(--ink)}
.hero-offer li span{font-size:.78rem;color:var(--ink-soft);font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.hero-note{font-size:.95rem;color:var(--ink-soft)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:1.7rem}
.hero-fine{margin-top:1.2rem}
.hero-visual{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:1.5rem}
.hero-visual svg{width:100%;max-width:460px;height:auto;flex:none}
.hero-visual figcaption{text-align:center}

/* Blocks */
.differentiation{background:var(--ink);color:#fff}
.differentiation .eyebrow{color:#8fd8d9}
.differentiation .section-heading p{color:#c7cde3}
.callout{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-left:4px solid var(--teal);border-radius:.9rem;padding:1.4rem 1.6rem;font-size:1.15rem;font-weight:700;margin:0 0 2.2rem;max-width:760px}
.factor-grid{display:grid;gap:.8rem;max-width:900px;margin:0 0 2.4rem;list-style:none;padding:0}
.factor-grid li{display:flex;gap:.85rem;align-items:flex-start;padding:1rem 1.1rem;border:1px solid rgba(255,255,255,.14);border-radius:.8rem;background:rgba(255,255,255,.04)}
.factor-grid li .dot{flex:none;width:8px;height:8px;border-radius:50%;background:var(--teal);margin-top:.5rem}
.closing-message{font-size:1.2rem;font-weight:700;max-width:640px;margin-bottom:1.8rem}
.reveal-cta summary{list-style:none;cursor:pointer}
.reveal-cta summary::-webkit-details-marker{display:none}
.reveal-cta summary .button{pointer-events:none}
.reveal-panel{margin-top:1.2rem;padding:1.3rem;border:1px solid rgba(255,255,255,.18);border-radius:1rem;background:rgba(255,255,255,.05)}
.reveal-panel p{font-size:.85rem;color:#c7cde3;margin-bottom:1rem}
.whatsapp-list{display:flex;flex-wrap:wrap;gap:.7rem;list-style:none;padding:0;margin:0}
.whatsapp-list li{margin:0}

/* Evidence */
.evidence{background:var(--mist)}
.evidence-intro{max-width:760px;color:var(--ink-soft);margin-bottom:2.6rem}
.evidence-columns{display:grid;gap:1.4rem;margin-bottom:2rem}
.evidence-card{border-radius:1rem;padding:1.7rem;background:#fff;border:1px solid var(--line)}
.evidence-card.affirm{border-top:4px solid var(--teal)}
.evidence-card.caution{border-top:4px solid var(--orange)}
.evidence-card h3{font-size:1.05rem;letter-spacing:-.01em}
.evidence-card ul{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.75rem}
.evidence-card li{padding-left:1.4rem;position:relative;font-size:.94rem;color:var(--ink-soft)}
.evidence-card.affirm li:before{content:"✓";position:absolute;left:0;color:var(--teal-deep);font-weight:800}
.evidence-card.caution li:before{content:"–";position:absolute;left:0;color:#b3670f;font-weight:800}
.evidence-card sup{font-size:.7rem;color:var(--purple-deep);margin-left:.1rem}
.evidence-strong{background:var(--ink);color:#fff;border-radius:1rem;padding:1.5rem 1.7rem;font-size:1.15rem;font-weight:750;max-width:760px}

/* Filtros de colores (amarillo / ámbar / rojo) */
.color-filters{background:var(--amber-50);position:relative}
.color-filters:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--yellow),var(--amber),var(--red))}
.color-filters .eyebrow{color:var(--amber)}
.color-filters .section-heading p{color:var(--ink-soft);max-width:720px}
.swatch-row{display:flex;flex-wrap:wrap;gap:1.4rem;margin:0 0 2.2rem}
.swatch-item{display:flex;align-items:center;gap:.55rem;font-size:.78rem;font-weight:750;color:var(--ink-soft)}
.swatch{width:20px;height:20px;border-radius:50%;display:inline-block;border:1px solid var(--line);flex:none}
.swatch.clear{background:rgba(255,255,255,.75)}
.swatch.amber{background:var(--amber)}
.swatch.red{background:var(--red)}
.callout-amber{background:#fff;border:1px solid rgba(217,122,31,.3);border-left:4px solid var(--amber);border-radius:.9rem;padding:1.3rem 1.5rem;font-size:1.08rem;font-weight:750;margin:1.8rem 0;max-width:760px;color:var(--ink)}
.color-filters h3{font-size:1.15rem;margin:1.8rem 0 .8rem}
.color-filters p{color:var(--ink-soft)}
.color-filters .strong-line{font-weight:800;font-size:1.02rem;color:var(--ink);border-left:3px solid var(--red);padding-left:1rem;margin:1rem 0}
.color-filters .evidence-card{margin-top:.5rem}
.color-filters .evidence-card ul{display:grid;gap:.6rem;list-style:none;padding:0;margin-top:.9rem}
.color-filters .evidence-card li{padding-left:1.4rem;position:relative;font-size:.92rem;color:var(--ink-soft)}
.color-filters .evidence-card li:before{content:"–";position:absolute;left:0;color:#b3670f;font-weight:800}
.color-filters .closing-message{color:var(--ink);font-size:1.05rem;font-weight:750}
.review-summary{list-style:none;padding:0;margin:.9rem 0 0;display:grid;gap:.55rem;max-width:700px}
.review-summary li{font-size:.9rem;color:var(--ink-soft);padding-left:1.1rem;position:relative}
.review-summary li:before{content:"•";position:absolute;left:0;color:var(--amber)}
.review-summary li strong{color:var(--ink)}
.color-filters .factor-grid{list-style:none;padding:0;margin:1rem 0 1.2rem;display:grid;gap:.6rem;max-width:640px}
.color-filters .factor-grid li{display:flex;gap:.7rem;align-items:flex-start;padding:.75rem .9rem;border:1px solid rgba(217,122,31,.22);border-radius:.7rem;background:#fff;font-size:.92rem;color:var(--ink-soft)}
.color-filters .factor-grid li .dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--amber);margin-top:.5rem}
@media (min-width:700px){.color-filters .factor-grid{grid-template-columns:1fr 1fr}}

/* Estudios (tabla en escritorio, tarjetas en móvil) */
.studies-details{margin-top:1.3rem;max-width:100%}
.studies-details summary{list-style:none;cursor:pointer}
.studies-details summary::-webkit-details-marker{display:none}
.studies-details summary .button{pointer-events:none}
.studies-table{display:grid;gap:.7rem;margin-top:1.3rem;max-width:100%}
.studies-row{display:grid;grid-template-columns:1fr;gap:.35rem;padding:1rem 1.1rem;border:1px solid rgba(217,122,31,.25);border-radius:.85rem;background:#fff}
.studies-row span[role="cell"]{font-size:.85rem;color:var(--ink-soft);line-height:1.5}
.studies-row span[role="cell"]:before{content:attr(data-label) ": ";font-weight:800;color:var(--ink)}
.studies-row span[role="cell"]:first-child{font-size:.95rem;font-weight:800;color:var(--ink);padding-bottom:.35rem;border-bottom:1px solid rgba(217,122,31,.18)}
.studies-row span[role="cell"]:first-child:before{content:none}
@media (min-width:860px){.studies-row span[role="cell"]:first-child{border-bottom:none;padding-bottom:0;font-size:.82rem}}
.studies-head{display:none}
@media (min-width:860px){
  .studies-table{gap:0;border:1px solid rgba(217,122,31,.25);border-radius:.85rem;overflow:hidden;background:#fff}
  .studies-row{grid-template-columns:1.15fr 1.05fr .95fr 2fr 1.25fr;gap:1rem;align-items:start;border:none;border-bottom:1px solid rgba(217,122,31,.18);border-radius:0;padding:.95rem 1.1rem}
  .studies-row:last-child{border-bottom:none}
  .studies-head{display:grid;background:var(--amber-50);font-weight:800;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink)}
  .studies-row span[role="cell"]:before{content:none}
  .studies-row span[role="cell"]{font-size:.82rem}
}

/* Graduated block */
.graduated{background:#fff}
.graduated-card{display:grid;gap:1.6rem;max-width:960px;margin:0 auto;padding:clamp(1.8rem,4vw,3rem);border:1px solid var(--line);border-radius:1.2rem;box-shadow:var(--shadow)}
.graduated-note{font-size:.9rem;color:var(--ink-soft);border-left:3px solid var(--teal);padding-left:1rem}

/* Office block */
.office{background:var(--slate)}
.office-inner{max-width:760px}
.office-inner p{color:var(--ink-soft)}

/* Centers / CTA final */
.availability{background:linear-gradient(155deg,var(--ink),#1b2a63);color:#fff;text-align:center}
.availability .eyebrow{color:#8fd8d9}
.availability-inner{max-width:900px;margin:auto}
.availability h2{max-width:760px;margin-inline:auto}
.price-recap{display:flex;flex-wrap:wrap;justify-content:center;gap:.9rem;margin:1.8rem 0 .6rem}
.price-recap span{border:1px solid rgba(255,255,255,.3);border-radius:.7rem;padding:.75rem 1.2rem;font-weight:750}
.centers-grid{display:grid;gap:1rem;max-width:760px;margin:2.2rem auto 0}
.center-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:1rem;padding:1.4rem;display:flex;flex-direction:column;gap:.8rem;align-items:center}
.center-card strong{font-size:1.05rem}

/* Footer */
.site-footer{padding:3rem 1.2rem;text-align:center;background:#0b1439;color:#fff;display:flex;flex-direction:column;align-items:center;gap:.7rem}
.brand-footer{font-size:1.3rem}
.brand-logo-footer{width:178px;background:#fff;border-radius:.45rem;padding:.25rem}
.site-footer p{margin:0;color:#cbd0e0;font-size:.78rem}
.site-footer .copyright{color:#858da8}
.legal-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.45rem 1rem}
.legal-links a{color:#cbd0e0;font-size:.7rem;text-underline-offset:.2rem}
.legal-links a:hover{color:#fff}

/* Sources */
.sources{background:#fff}
.sources-updated{display:inline-block;font-size:.78rem;font-weight:750;color:var(--teal-deep);background:var(--lilac);border-radius:999px;padding:.4rem .9rem;margin-bottom:1.6rem}
.sources-list{list-style:none;padding:0;margin:0;display:grid;gap:1rem;max-width:820px}
.sources-list li{border:1px solid var(--line);border-radius:.9rem;padding:1.1rem 1.3rem;display:flex;flex-direction:column;gap:.2rem}
.sources-list .src-num{color:var(--teal-deep);font-weight:800;font-size:.8rem}
.sources-list .src-title{font-weight:750}
.sources-list .src-org{font-size:.82rem;color:var(--ink-soft)}
.sources-list a{color:var(--purple-deep);font-size:.85rem;text-decoration:underline;text-underline-offset:.2rem;word-break:break-word}
.sources-list li{scroll-margin-top:1.5rem}
.sources-list li:target{outline:2px solid var(--teal);outline-offset:4px;background:var(--mist)}
.sources-note{max-width:760px;color:var(--ink-soft);font-size:.9rem;margin-top:1.8rem}

/* Citas en línea → enlazan a #fuentes */
sup a.cite{color:var(--purple-deep);text-decoration:none;font-weight:700}
sup a.cite:hover,sup a.cite:focus-visible{text-decoration:underline}
sup a.cite:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:2px}
.differentiation sup a.cite,.availability sup a.cite{color:#bfe7e8}

/* Reveal-on-scroll */
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.is-visible{opacity:1;transform:none}

/* Responsive */
@media (min-width:700px){
  .hero{grid-template-columns:1.1fr .9fr;align-items:center;padding-top:8rem;min-height:82vh}
  .evidence-columns{grid-template-columns:1fr 1fr}
  .graduated-card{grid-template-columns:1.2fr .8fr;align-items:center}
  .centers-grid{grid-template-columns:repeat(3,1fr)}
  .site-footer{flex-direction:row;justify-content:space-between;padding-inline:5vw;flex-wrap:wrap}
  .site-footer .copyright{margin-left:auto}
  .legal-links{order:4;flex-basis:100%}
}
@media (min-width:1100px){
  .hero{padding-inline:5rem}
  .factor-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:420px){
  .site-header{height:68px}
  .header-link{font-size:.64rem}
  .hero{padding-top:6.2rem}
  .hero h1{font-size:2.1rem}
  .hero-actions{align-items:stretch}
  .hero-actions .button{width:100%}
  .whatsapp-list{display:grid}
  .whatsapp-list .button{width:100%}
  .centers-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .button{transition:none}
}