/* =====================================================================
   MARIANNYRP · "EDITORIAL" — revista de autor
   Capítulos de color · numerales de índice · marcas de agua "m"
   Fraunces (display) + Hanken Grotesk (texto) · Paleta de marca intacta
   ===================================================================== */

:root{
  --bone:  #F5F2EC;   /* hueso */
  --sand:  #D9CFC3;   /* arena */
  --champ: #E8DED2;   /* champagne */
  --taupe: #9A9087;   /* topo */
  --ink:   #15120E;   /* negro premium (cálido) */

  /* Tokens semánticos de contraste (se re-definen por capítulo) */
  --label:   #6b6156;              /* etiquetas mayúsculas (texto pequeño, ≥4.5:1) */
  --numeral: #857a6c;              /* numerales / detalles grandes (≥3:1) */
  --body:    #4a443b;              /* cuerpo de texto sobre fondo claro */
  --strong:  var(--ink);
  --line:    rgba(21,18,14,.16);
  --hair:    rgba(21,18,14,.10);

  --display: "Fraunces", Georgia, serif;
  --sans: "Hanken Grotesk", system-ui, -apple-system, sans-serif;

  --ease: cubic-bezier(.19,1,.22,1);
  --pad: clamp(1.25rem, 5vw, 5.5rem);
  --maxw: 1320px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
@media (prefers-reduced-motion:reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0; background:var(--bone); color:var(--ink);
  font-family:var(--sans); font-weight:400; line-height:1.6; font-size:1.02rem;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }

.paper-grain{ position:fixed; inset:0; z-index:-1; pointer-events:none; opacity:.4; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E"); }

::selection{ background:var(--ink); color:var(--bone); }

/* ---------- Tipografía ---------- */
h1,h2,h3{ font-family:var(--display); font-weight:430; margin:0; line-height:.98;
  letter-spacing:-.018em; font-variation-settings:"opsz" 144; }
p{ margin:0; }
.serif-it{ font-style:italic; font-weight:400; }

.kicker{ font-family:var(--sans); font-weight:500; font-size:.72rem; text-transform:uppercase;
  letter-spacing:.28em; color:var(--label); }

/* Botón editorial */
.btn{ display:inline-flex; align-items:center; gap:.7rem; background:var(--ink); color:var(--bone);
  font-family:var(--sans); font-weight:500; font-size:.86rem; letter-spacing:.02em;
  padding:1.05rem 1.7rem; border:1px solid var(--ink);
  transition:background .4s var(--ease), color .4s var(--ease), gap .4s var(--ease); }
.btn span{ transition:transform .4s var(--ease); }
.btn:hover{ background:transparent; color:var(--ink); gap:1.1rem; }
.btn:hover span{ transform:translateX(4px); }
.btn-light{ background:var(--bone); color:var(--ink); border-color:var(--bone); }
.btn-light:hover{ background:transparent; color:var(--bone); }

.link-underline{ font-family:var(--sans); font-weight:500; font-size:.86rem; letter-spacing:.04em;
  text-transform:uppercase; padding-bottom:.35rem; background-image:linear-gradient(currentColor,currentColor);
  background-size:100% 1px; background-repeat:no-repeat; background-position:0 100%;
  transition:background-size .45s var(--ease), opacity .3s; }
.link-underline:hover{ background-size:0 1px; opacity:.6; }

/* ---------- Marca de agua "m" ---------- */
.wm{ position:absolute; z-index:0; pointer-events:none; background-repeat:no-repeat;
  background-position:center; background-size:contain; aspect-ratio:900/433; }
.wm-dark{ background-image:url("assets/mark-dark.png"); }
.wm-light{ background-image:url("assets/mark-light.png"); }

/* =====================================================================
   NAV
   ===================================================================== */
#nav{ position:fixed; top:0; left:0; width:100%; z-index:100;
  display:flex; align-items:center; justify-content:space-between; padding:1.5rem var(--pad);
  transition:padding .4s var(--ease), background .4s var(--ease), border-color .4s var(--ease);
  border-bottom:1px solid transparent; }
#nav.scrolled{ padding:.9rem var(--pad); background:color-mix(in srgb, var(--bone) 88%, transparent);
  -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px); border-bottom:1px solid var(--line); }

.wordmark{ display:block; width:172px; height:36px;
  background:url("assets/wordmark-dark.png") left center/contain no-repeat;
  transition:width .4s var(--ease); }
.wordmark.light{ background-image:url("assets/wordmark-light.png"); width:160px; height:34px; }
#nav.scrolled .wordmark{ width:150px; }

.nav-links{ display:flex; align-items:center; gap:2.2rem; }
.nav-links a{ font-size:.88rem; font-weight:500; letter-spacing:.01em; display:inline-flex; align-items:baseline; gap:.4rem;
  position:relative; transition:opacity .3s; }
.nav-i{ font-size:.62rem; color:var(--label); font-variant-numeric:tabular-nums; }
.nav-links a:not(.nav-cta)::after{ content:""; position:absolute; left:0; bottom:-4px; height:1px; width:0;
  background:var(--ink); transition:width .4s var(--ease); }
.nav-links a:not(.nav-cta):hover::after{ width:100%; }
.nav-cta{ border:1px solid var(--ink); padding:.6rem 1.15rem; letter-spacing:.03em;
  transition:background .35s var(--ease), color .35s var(--ease); }
.nav-cta:hover{ background:var(--ink); color:var(--bone); }
.nav-toggle{ display:none; background:none; border:none; cursor:pointer; color:var(--ink); padding:0; line-height:0; }
.nav-toggle .ico-close{ display:none; }

/* =====================================================================
   HERO — capítulo 00 (fondo hueso)
   ===================================================================== */
.hero{ position:relative; overflow:hidden; min-height:100vh; padding:clamp(7rem,14vh,10rem) var(--pad) 2.5rem;
  display:flex; flex-direction:column; justify-content:center; border-bottom:1px solid var(--line); }
.hero>*:not(.wm){ position:relative; z-index:1; }
.hero .wm{ width:min(56vw,780px); left:-8%; bottom:-10%; opacity:.05; }
.hero-mark{ position:absolute; top:clamp(6rem,12vh,8rem); right:var(--pad);
  font-family:var(--sans); font-size:.72rem; letter-spacing:.28em; text-transform:uppercase; color:var(--label); }

.hero-body{ max-width:var(--maxw); margin:0 auto; width:100%;
  display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(2rem,5vw,4.5rem); align-items:center; }
.hero-text h1{ font-size:clamp(3.4rem, 9.5vw, 9rem); margin:1.6rem 0 0; letter-spacing:-.03em; }
.hero-sub{ margin:2rem 0 0; max-width:40ch; font-size:clamp(1.05rem,1.4vw,1.22rem); font-weight:300;
  color:var(--body); line-height:1.65; }
.hero-actions{ margin-top:2.6rem; display:flex; align-items:center; gap:2rem; flex-wrap:wrap; }

.hero-media{ position:relative; justify-self:end; width:100%; max-width:400px; }
.hero-plate{ position:absolute; inset:auto -8% -7% 14%; height:88%; background:var(--champ); z-index:0; }
.hero-photo{ position:relative; z-index:1; margin:0; overflow:hidden; filter:grayscale(.12) contrast(1.02); }
.hero-photo img{ width:100%; height:auto; aspect-ratio:4/4.7; object-fit:cover; object-position:50% 18%; }
.hero-sig{ position:absolute; z-index:2; top:50%; right:-2.4rem; transform:translateY(-50%) rotate(90deg);
  transform-origin:center; font-family:var(--display); font-style:italic; font-size:1.05rem; color:var(--label);
  letter-spacing:.05em; white-space:nowrap; }

.hero-foot{ max-width:var(--maxw); margin:clamp(2.5rem,5vw,3.5rem) auto 0; width:100%;
  display:flex; justify-content:space-between; align-items:center; gap:1rem;
  padding-top:1.4rem; border-top:1px solid var(--line);
  font-family:var(--sans); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--label); }
.hero-scroll{ display:inline-flex; gap:.5rem; align-items:center; }
.hero-scroll span{ animation:bob 1.8s var(--ease) infinite; }
@keyframes bob{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(4px); } }

/* =====================================================================
   CAPÍTULOS — bloques de color + tokens de contraste por fondo
   ===================================================================== */
.chapter{ position:relative; overflow:hidden; padding:clamp(4.5rem,9vw,8.5rem) var(--pad); border-bottom:1px solid var(--line); }
.chapter>*:not(.wm){ position:relative; z-index:1; }

.ch-bone{ background:var(--bone); }
.ch-champ{ background:var(--champ);  --label:#6a5f52; --numeral:#847868; --body:#463f35; --line:rgba(21,18,14,.15); }
.ch-arena{ background:var(--sand);   --label:#4f4739; --numeral:#6e6353; --body:#3c372d; --line:rgba(21,18,14,.18); }
.ch-ink{ background:var(--ink); color:var(--bone); border-bottom:none;
  --label:#c6b9a6; --numeral:#a99d8d; --body:rgba(245,242,236,.74); --line:rgba(245,242,236,.16); }

/* posición de las marcas de agua por capítulo */
#audiencia .wm{ width:min(40vw,540px); right:-5%; top:9%; opacity:.06; }
#metodo .wm{ width:min(42vw,580px); right:-9%; top:50%; transform:translateY(-50%); opacity:.06; }
#sobre .wm{ width:min(40vw,520px); right:-6%; bottom:-8%; opacity:.08; }
#resultados .wm{ width:min(34vw,440px); left:-6%; bottom:-14%; opacity:.045; }
#empezar .wm{ width:min(34vw,440px); right:-6%; top:-12%; opacity:.05; }

.chapter-no{ display:block; font-family:var(--display); font-style:italic; font-size:1.5rem; color:var(--numeral); }
.chapter-label{ display:block; margin-top:.6rem; font-family:var(--sans); font-size:.72rem;
  letter-spacing:.24em; text-transform:uppercase; color:var(--label); }
.chapter-head{ max-width:var(--maxw); margin:0 auto clamp(2.6rem,5vw,4rem); }
.chapter-head .chapter-no,
.chapter-head .kicker{ display:block; margin-bottom:1.1rem; }
.chapter-head h2{ font-size:clamp(2.2rem,5.2vw,4.4rem); max-width:15ch; }
.chapter-intro{ margin-top:1.6rem; max-width:46ch; font-weight:300; font-size:1.08rem; color:var(--body); line-height:1.7; }

/* Capítulo — El punto de partida (fondo negro) */
.problem{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:1.1fr .9fr;
  column-gap:clamp(2.5rem,6vw,6rem); row-gap:clamp(2rem,4vw,3rem); align-items:start; }
.problem .kicker{ grid-column:1/-1; display:block; }
.statement{ font-family:var(--display); font-weight:430; font-size:clamp(1.8rem,3.4vw,2.9rem);
  line-height:1.14; letter-spacing:-.01em; align-self:start; }
.pains, .problem-text{ list-style:none; margin:0; padding:0; align-self:center;
  display:flex; flex-direction:column; gap:clamp(1.3rem,2.2vw,1.8rem); }
.pains li, .problem-text p{ font-weight:300; font-size:clamp(1rem,1.3vw,1.18rem); line-height:1.6; color:rgba(245,242,236,.9); }

/* =====================================================================
   MÉTODO
   ===================================================================== */
.method{ list-style:none; max-width:var(--maxw); margin:0 auto; padding:0;
  display:grid; grid-template-columns:1fr 1fr; column-gap:clamp(2.5rem,5.5vw,6rem); }
.step{ padding:clamp(1.7rem,3vw,2.3rem) 0; border-top:1px solid var(--line); }
.step h3{ font-size:clamp(1.6rem,2.6vw,2.3rem); margin-bottom:.7rem; }
.step:hover h3{ font-style:italic; }
.step p{ margin:0; max-width:42ch; font-weight:300; font-size:1.02rem; color:var(--body); line-height:1.6; }
/* El título del método es más largo (2 frases): un poco más contenido que otros capítulos */
#metodo .chapter-head h2{ font-size:clamp(1.9rem,4vw,3.2rem); max-width:22ch; }

/* =====================================================================
   SOBRE MÍ
   ===================================================================== */
.about{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:.82fr 1.18fr;
  gap:clamp(2rem,6vw,5.5rem); align-items:center; }
.about-photo{ position:relative; margin:0; }
.about-photo img{ display:block; width:100%; height:auto; aspect-ratio:4/4.7; object-fit:cover;
  object-position:50% 16%; filter:grayscale(.1); }
.about-photo figcaption{ display:block; background:var(--ink); color:var(--bone); text-align:center;
  font-family:var(--sans); font-size:.62rem; letter-spacing:.2em; text-transform:uppercase; padding:.9rem 1rem; }
.about-text .chapter-no,
.about-text .kicker{ display:block; margin-bottom:1.2rem; }
.about-text h2{ font-size:clamp(1.6rem,3vw,2.6rem); max-width:24ch; line-height:1.1; }
.about-text>p{ margin-top:1.6rem; max-width:48ch; font-weight:300; font-size:1.1rem; line-height:1.75; color:var(--body); }
.about-text>p strong{ font-weight:600; color:var(--strong); }
.about-values{ display:flex; flex-wrap:wrap; gap:.5rem 1.4rem; margin-top:2rem !important; }
.about-values span{ font-family:var(--sans); font-size:.72rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--label); position:relative; padding-left:1.1rem; }
.about-values span::before{ content:"—"; position:absolute; left:0; }
.about-sign{ font-family:var(--display); font-style:italic; font-size:2rem; margin-top:1.6rem !important; color:var(--strong); }

/* =====================================================================
   RESULTADOS
   ===================================================================== */
.results{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:repeat(3,1fr);
  gap:clamp(2rem,4vw,3.5rem); border-top:1px solid var(--line); padding-top:clamp(2.4rem,4vw,3.4rem); }
.result h3{ font-size:clamp(1.5rem,2.4vw,2rem); margin:0 0 .7rem; }
.result p{ font-weight:300; color:var(--body); line-height:1.6; }

/* =====================================================================
   CÓMO EMPEZAR
   ===================================================================== */
.paths{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:1fr 1fr; border-top:1px solid var(--line); }
.path{ padding:clamp(2.2rem,4vw,3.5rem) clamp(1.6rem,3vw,3rem); border-right:1px solid var(--line); display:flex; flex-direction:column; }
.path:last-child{ border-right:none; }
.path-tag{ font-family:var(--sans); font-size:.7rem; letter-spacing:.2em; text-transform:uppercase; color:var(--label); }
.path h3{ font-size:clamp(1.9rem,3vw,2.6rem); margin:0 0 1rem; }
.path>p{ font-weight:300; color:var(--body); line-height:1.65; max-width:40ch; }
.path-when{ margin-top:1rem !important; font-family:var(--display); font-style:italic; color:var(--label); font-size:1.05rem; }
.path .link-underline{ margin-top:2.2rem; align-self:flex-start; }
.path-alt{ background:rgba(21,18,14,.04); }

/* =====================================================================
   CTA (fondo negro)
   ===================================================================== */
.cta{ position:relative; overflow:hidden; padding:clamp(5rem,11vw,9rem) var(--pad); text-align:center; }
.cta>*:not(.wm){ position:relative; z-index:1; }
.cta .wm{ width:min(80vw,940px); left:50%; top:50%; transform:translate(-50%,-50%); opacity:.05; }
.cta-no{ position:absolute; top:clamp(2rem,5vw,3.5rem); left:50%; transform:translateX(-50%);
  font-family:var(--display); font-style:italic; font-size:1.3rem; color:var(--numeral); }
.cta .kicker{ display:block; }
.cta h2{ font-size:clamp(2.8rem,8vw,6.5rem); margin:1.4rem 0 0; }
.cta-sub{ margin:1.8rem auto 0; max-width:42ch; font-weight:300; font-size:1.12rem; color:var(--body); line-height:1.7; }
.cta-actions{ margin-top:2.8rem; display:flex; justify-content:center; align-items:center; gap:2rem; flex-wrap:wrap; }

/* =====================================================================
   FOOTER (fondo negro)
   ===================================================================== */
.site-footer{ position:relative; overflow:hidden; padding:clamp(3.5rem,7vw,5.5rem) var(--pad) 2.2rem; }
.site-footer>*:not(.wm){ position:relative; z-index:1; }
.site-footer .wm{ width:min(32vw,360px); right:3%; bottom:-4%; opacity:.05; }
.foot-top{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:1.4fr 1fr;
  gap:2.5rem; padding-bottom:clamp(2.5rem,5vw,4rem); border-bottom:1px solid var(--line); }
.foot-claim{ font-family:var(--display); font-size:clamp(2rem,5vw,3.6rem); line-height:1.05; }
.foot-cols{ display:flex; gap:clamp(2rem,5vw,4rem); justify-content:flex-end; }
.foot-nav{ display:flex; flex-direction:column; gap:.8rem; }
.foot-lbl{ font-family:var(--sans); font-size:.68rem; letter-spacing:.22em; text-transform:uppercase; color:var(--label); margin-bottom:.5rem; }
.foot-nav a{ font-size:.95rem; color:rgba(245,242,236,.82); transition:color .3s; width:fit-content; }
.foot-nav a:hover{ color:var(--bone); }
.foot-base{ max-width:var(--maxw); margin:1.8rem auto 0; display:flex; justify-content:space-between;
  align-items:center; gap:1rem; flex-wrap:wrap; font-size:.74rem; letter-spacing:.06em; color:var(--label); }

/* Botón volver arriba */
.to-top{ position:fixed; right:1.3rem; bottom:1.3rem; z-index:90; width:48px; height:48px;
  display:grid; place-items:center; background:var(--ink); color:var(--bone);
  border:1.5px solid rgba(245,242,236,.3); cursor:pointer; line-height:1; box-shadow:0 8px 24px rgba(0,0,0,.32);
  opacity:0; transform:translateY(12px); pointer-events:none;
  transition:opacity .4s var(--ease), transform .4s var(--ease), background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease); }
.to-top.show{ opacity:1; transform:none; pointer-events:auto; }
.to-top:hover{ background:var(--taupe); color:var(--bone); border-color:var(--taupe); }
/* Sobre secciones oscuras: se vuelve claro para no camuflarse */
.to-top.on-dark{ background:var(--bone); color:var(--ink); border-color:rgba(21,18,14,.18); }
.to-top.on-dark:hover{ background:#fff; color:var(--ink); border-color:#fff; }

/* =====================================================================
   BOTONES COMO <button> + MODAL "Solicita tu revisión"
   ===================================================================== */
.btn, .bridge-inner .btn-primary{ cursor:pointer; }
button.link-underline{ background-color:transparent; border:0; padding:0 0 .35rem; cursor:pointer; }

.request-modal{ margin:auto; max-width:min(92vw,460px); width:100%; max-height:90vh; padding:0;
  border:none; background:transparent; color:var(--ink); }
.request-modal::backdrop{ background:rgba(21,18,14,.55); -webkit-backdrop-filter:blur(3px); backdrop-filter:blur(3px); }
.request-modal[open]{ animation:modalIn .32s var(--ease); }
@keyframes modalIn{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:none; } }

.request-form{ position:relative; background:#FCFAF6; border:1px solid var(--line);
  padding:clamp(1.9rem,4vw,2.7rem); box-shadow:0 40px 100px -30px rgba(21,18,14,.55);
  max-height:90vh; overflow:auto; }
.request-close{ position:absolute; top:.9rem; right:.9rem; background:transparent; border:0; cursor:pointer;
  color:var(--taupe); padding:.35rem; line-height:0; transition:color .3s; }
.request-close:hover{ color:var(--ink); }
.request-form .kicker{ display:block; }
.request-form h3{ font-family:var(--display); font-weight:430; font-variation-settings:"opsz" 144;
  font-size:clamp(1.6rem,3vw,2.1rem); line-height:1.05; letter-spacing:-.01em; margin:.7rem 0 .6rem; }
.request-intro{ color:var(--body); font-weight:300; font-size:.98rem; line-height:1.55; margin-bottom:1.6rem; }
.request-field{ display:block; margin-bottom:1.1rem; font-family:var(--sans); font-size:.68rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--label); }
.request-field .opt{ text-transform:none; letter-spacing:0; color:var(--taupe); font-size:.85em; }
.request-field input, .request-field textarea{ display:block; width:100%; margin-top:.55rem;
  font-family:var(--sans); font-size:1rem; font-weight:400; letter-spacing:0; text-transform:none;
  color:var(--ink); background:#fff; border:1px solid var(--line); padding:.8rem .9rem; border-radius:0; }
.request-field textarea{ resize:vertical; min-height:64px; }
.request-field input::placeholder, .request-field textarea::placeholder{ color:#b6ac9e; }
.request-field input:focus, .request-field textarea:focus{ outline:none; border-color:var(--ink); box-shadow:0 0 0 3px rgba(21,18,14,.06); }
.request-hint{ display:block; margin-top:.5rem; font-family:var(--sans); font-size:.72rem; font-weight:400;
  letter-spacing:0; text-transform:none; color:var(--taupe); line-height:1.4; }
.request-hp{ position:absolute; left:-9999px; width:1px; height:1px; opacity:0; }
.request-submit{ width:100%; justify-content:center; margin-top:.3rem; cursor:pointer; }
.request-submit[disabled]{ opacity:.55; cursor:default; }
.request-status{ margin:1rem 0 0; font-size:.9rem; line-height:1.4; min-height:1.1em; color:var(--body); }
.request-status.is-ok{ color:#4f6b4b; }
.request-status.is-error{ color:#9a4f3c; }

/* =====================================================================
   PÁGINA /productos
   ===================================================================== */
.subhero{ position:relative; overflow:hidden; padding:clamp(8rem,15vh,11rem) var(--pad) clamp(2.5rem,5vw,4rem); border-bottom:1px solid var(--line); }
.subhero>*{ position:relative; z-index:1; }
.subhero .wm{ width:min(46vw,620px); right:-7%; bottom:-24%; opacity:.05; }
.subhero .wrap{ max-width:var(--maxw); margin:0 auto; }
.subhero .eyebrow{ font-family:var(--sans); font-weight:500; font-size:.72rem; letter-spacing:.24em; text-transform:uppercase; color:var(--label); }
.subhero h1{ font-family:var(--display); font-weight:430; font-variation-settings:"opsz" 144;
  font-size:clamp(2.8rem,7vw,5.5rem); margin:1.4rem 0 0; max-width:16ch; letter-spacing:-.02em; line-height:1; }
.subhero .em{ font-style:italic; }
.subhero .lead{ margin:1.6rem 0 0; max-width:54ch; font-weight:300; font-size:1.12rem; color:var(--body); line-height:1.65; }
.subhero .lead-2{ margin-top:.9rem; }

.products{ padding:clamp(3rem,6vw,5rem) var(--pad) clamp(4rem,8vw,7rem); }
.sec-head.sol-head{ max-width:var(--maxw); margin:0 auto clamp(2.4rem,5vw,3.6rem); }
.sol-head h2{ font-family:var(--display); font-weight:430; font-size:clamp(1.9rem,4vw,3rem); }
.sol-sub{ margin-top:1rem; color:var(--body); font-weight:300; font-size:1.05rem; max-width:52ch; }

.sol-grid{ max-width:var(--maxw); margin:0 auto; display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); border-top:1px solid var(--line); border-left:1px solid var(--line); }
.sol{ display:flex; flex-direction:column; padding:clamp(1.8rem,2.6vw,2.4rem);
  border-right:1px solid var(--line); border-bottom:1px solid var(--line); transition:background .4s var(--ease); }
.sol:hover{ background:var(--champ); }
.sol-cat{ display:inline-flex; align-items:center; justify-content:center; align-self:flex-start;
  width:44px; height:44px; background:var(--champ); margin-bottom:1.4rem; }
.sol-ico{ width:20px; height:20px; fill:none; stroke:var(--ink); stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; }
.sol h3{ font-family:var(--display); font-weight:430; font-size:1.75rem; margin-bottom:.7rem; }
.sol-when{ font-family:var(--display); font-style:italic; color:var(--label); font-size:1rem; margin-bottom:1rem; }
.sol-result{ color:var(--body); font-weight:300; line-height:1.6; }
.sol-foot{ margin-top:auto; padding-top:1.6rem; }
.sol-foot .btn-ghost{ display:inline-block; font-family:var(--sans); font-weight:500; font-size:.82rem; letter-spacing:.04em;
  text-transform:uppercase; background:transparent; border:0; border-bottom:1px solid var(--ink);
  padding:0 0 .3rem; cursor:pointer; transition:opacity .3s; }
.sol-foot .btn-ghost:hover{ opacity:.6; }
.sol-more{ margin-top:1.2rem; border-top:1px solid var(--line); padding-top:1rem; }
.sol-more summary{ cursor:pointer; list-style:none; font-family:var(--sans); font-size:.7rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--label); display:flex; align-items:center; }
.sol-more summary::-webkit-details-marker{ display:none; }
.sol-more summary::after{ content:"+"; margin-left:auto; font-size:1.1rem; transition:transform .3s var(--ease); }
.sol-more[open] summary::after{ transform:rotate(45deg); }
.sol-detail{ padding-top:1rem; }
.sol-detail .lbl{ font-family:var(--sans); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--label); display:block; margin-bottom:.6rem; }
.sol-detail ul{ margin:0; padding:0; list-style:none; display:grid; gap:.5rem; }
.sol-detail li{ position:relative; padding-left:1.2rem; color:var(--body); font-weight:300; font-size:.94rem; }
.sol-detail li::before{ content:"·"; position:absolute; left:.2rem; color:var(--numeral); }

.bridge{ position:relative; overflow:hidden; padding:clamp(4.5rem,9vw,7rem) var(--pad); background:var(--ink); color:var(--bone); text-align:center;
  --label:#c6b9a6; --numeral:#a99d8d; --body:rgba(245,242,236,.74); }
.bridge>*{ position:relative; z-index:1; }
.bridge .wm{ width:min(70vw,860px); left:50%; top:50%; transform:translate(-50%,-50%); opacity:.05; }
.bridge-inner{ max-width:var(--maxw); margin:0 auto; }
.bridge-inner .eyebrow{ font-family:var(--sans); font-weight:500; font-size:.72rem; letter-spacing:.24em; text-transform:uppercase; color:var(--label); }
.bridge-inner h2{ font-family:var(--display); font-weight:430; font-variation-settings:"opsz" 144;
  font-size:clamp(2.2rem,5vw,3.8rem); margin:1.2rem 0 1rem; }
.bridge-inner h2 .em{ font-style:italic; }
.bridge-inner p{ color:var(--body); font-weight:300; max-width:46ch; margin:0 auto 2.2rem; line-height:1.7; }
.bridge-inner .btn-primary{ display:inline-flex; align-items:center; gap:.7rem; background:var(--bone); color:var(--ink);
  font-family:var(--sans); font-weight:500; font-size:.86rem; padding:1.05rem 1.7rem; border:1px solid var(--bone);
  transition:background .4s var(--ease), color .4s var(--ease); }
.bridge-inner .btn-primary:hover{ background:transparent; color:var(--bone); }

/* =====================================================================
   REVEAL
   ===================================================================== */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
.reveal.d1{ transition-delay:.1s; } .reveal.d2{ transition-delay:.2s; }
.reveal.d3{ transition-delay:.3s; } .reveal.d4{ transition-delay:.4s; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1 !important; transform:none !important; }
}

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width:900px){
  .hero-body{ grid-template-columns:1fr; gap:2.5rem; }
  .hero-media{ justify-self:center; order:-1; width:100%; max-width:min(80vw,380px); margin:0 auto; }
  .hero-sig, .hero-mark{ display:none; }
  .problem{ grid-template-columns:1fr; row-gap:1.6rem; }
  .pains{ align-self:start; }
  .about{ grid-template-columns:1fr; gap:2.5rem; }
  .about-photo{ width:100%; max-width:min(82vw,400px); margin:0 auto; }
  .results{ grid-template-columns:1fr; }
  .result{ border-right:none; border-bottom:1px solid var(--line); padding-right:0; }
  .paths{ grid-template-columns:1fr; }
  .path{ border-right:none; border-bottom:1px solid var(--line); }
  .foot-top{ grid-template-columns:1fr; gap:2.5rem; }
  .foot-cols{ justify-content:flex-start; }
}

@media (max-width:600px){
  .nav-links{ position:fixed; inset:0 0 0 auto; width:min(82vw,340px); height:100vh;
    flex-direction:column; align-items:flex-start; justify-content:center; gap:1.8rem;
    padding:2rem 2.2rem; background:var(--bone); border-left:1px solid var(--line);
    transform:translateX(100%); transition:transform .5s var(--ease); z-index:105; }
  #nav.open .nav-links{ transform:none; }
  .nav-links a{ font-size:1.3rem; }
  .nav-links a.nav-cta{ font-size:.9rem; }
  .nav-toggle{ display:block; position:relative; z-index:110; }
  #nav.open .nav-toggle .ico-menu{ display:none; }
  #nav.open .nav-toggle .ico-close{ display:block; }
  .hero-foot{ flex-direction:column; align-items:flex-start; gap:1rem; }
  .hero-text h1{ font-size:clamp(2.7rem,10vw,3.6rem); }
  .hero-media{ max-width:min(86vw,340px); }
  .method{ grid-template-columns:1fr; }
  .pains{ grid-template-columns:1fr; }
  .hero-actions, .cta-actions{ flex-direction:column; align-items:flex-start; gap:1.3rem; }
  .cta-actions{ align-items:center; }
  .foot-base{ flex-direction:column; align-items:flex-start; gap:.5rem; }
}

/* ---------- Centrar el contenido en móvil ---------- */
@media (max-width:600px){
  .hero-text{ text-align:center; }
  .hero-actions{ align-items:center; }
  .hero-foot{ align-items:center; text-align:center; }

  .chapter-head{ text-align:center; }
  .chapter-head h2, .chapter-intro{ margin-inline:auto; }

  .problem{ text-align:center; }
  .statement{ margin-inline:auto; }

  .step{ text-align:center; }
  .step p{ margin-inline:auto; }

  .about, .about-text{ text-align:center; }
  .about-text h2, .about-text > p{ margin-inline:auto; }
  .about-values{ justify-content:center; }

  .result{ text-align:center; }
  .result p{ margin-inline:auto; }

  .path{ text-align:center; align-items:center; }
  .path > p, .path-when{ margin-inline:auto; }
  .path .link-underline{ align-self:center; }

  .subhero .wrap{ text-align:center; }
  .subhero h1, .subhero .lead{ margin-inline:auto; }
  .sol-head{ text-align:center; }
  .sol-sub{ margin-inline:auto; }

  .foot-claim{ text-align:center; }
  .foot-cols{ justify-content:center; text-align:center; }
  .foot-nav{ align-items:center; }
  .foot-base{ align-items:center; text-align:center; }
}