/* ==========================================================================
   ATHEN // Sistema visual
   Arquetipo: Minimalist Luxury (neutros cálidos, sombra ambiental en capas)
              × Industrial Terminal (mono para metadatos, retícula de 1px)
   Retícula espacial 4/8px · escalas derivadas de Φ = 1.618 y Fibonacci
   Contraste: todo texto ≥ 4.5:1 en las tres superficies de cada tema.
   ========================================================================== */

:root{
  /* --- superficies --- */
  --bg:#F8F6F2;
  --bg-subtle:#F1EFEA;
  --card:#FFFFFF;
  --card-2:#FBFAF8;
  --border:#E4E1DC;
  --border-strong:#D3CFC8;
  --hairline:rgba(17,18,21,.08);
  --grid-line:rgba(17,18,21,.055);

  /* --- tinta (verificada sobre bg / card / bg-subtle) --- */
  --ink:#111215;        /* 17.4 : 1 */
  --ink-muted:#6E7178;  /*  4.5 : 1 */
  --ink-soft:#696D75;   /*  4.5 : 1 — micro-labels en mono */
  --pill:#111215;
  --pill-ink:#FFFFFF;
  --tag:#EFEDE8;

  /* --- oro champagne: gráfico vs. texto --- */
  --gold:#C5A880;       /* sólo trazos y superficies (≥ 3:1) */
  --gold-deep:#8A6624;  /* texto sobre claro — 4.6 : 1 */

  /* --- acentos por división: gráfico (--x, ≥3:1) y texto (--x-ink, ≥6.4:1) ---
     Mismo pigmento que el isotipo, para que etiqueta, halo y mark no discrepen. */
  --aevni:#796D90;    --aevni-ink:#5C5270;
  --epifron:#5C7794;  --epifron-ink:#435A73;
  --ictino:#83724F;   --ictino-ink:#655637;
  --palian:#444054;   --palian-ink:#2F243A;
  --pronos:#6A8D73;   --pronos-ink:#3D5A44;
  --talos:#59706D;    --talos-ink:#080F0F;

  /* --- isotipos policromos ---------------------------------------------
     --mk-*  estructura compartida (mármol pentélico ↔ grafito basáltico);
             sobre porcelana se invierte a grafito para no desaparecer.
     --<div>-1/2/3  pigmento elemental de cada división, del claro al profundo.
     Los seis pigmentos comparten L y croma en OKLCH (claro L.56→.34 / C.055,
     oscuro L.80→.56 / C.06): sólo cambia el hue, así que ninguna división
     domina a las otras y la grilla no se lee como paleta de plantilla.       */
  --mk-1:#52565F; --mk-2:#2E3238; --mk-3:#111215;

  --aevni-1:#796D90;   --aevni-2:#5C5270;   --aevni-3:#3B334A;  /* lavanda ceniza  H300 */
  --epifron-1:#5C7794; --epifron-2:#435A73; --epifron-3:#283A4C; /* azul payne     H250 */
  --ictino-1:#83724F;  --ictino-2:#655637;  --ictino-3:#41361F;  /* ocre pentélico H85  */
  --palian-1:#BEBBBB;  --palian-2:#444054;  --palian-3:#2F243A;  /* plata / pizarra violeta */
  --pronos-1:#6A8D73;  --pronos-2:#F4FDD9;  --pronos-3:#3D5A44;  /* laurel / honeydew pastel */
  --talos-1:#A4BAB7;   --talos-2:#4A605D;   --talos-3:#080F0F;   /* niebla salvia / basalto */

  /* --- tipografía --- */
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --display:'Inter Tight',var(--sans);
  --mono:'Fragment Mono','SF Mono',Menlo,Consolas,monospace;
  --hand:'Caveat',ui-rounded,cursive;

  /* --- geometría (Fibonacci: 8 / 13 / 21) --- */
  --r-lg:21px;
  --r-md:13px;
  --r-sm:8px;
  --r-pill:9999px;

  /* --- elevación ambiental en capas, tintada con la superficie --- */
  --shadow:0 1px 2px rgba(17,18,21,.04),0 8px 24px -12px rgba(17,18,21,.07);
  --shadow-lift:0 2px 4px rgba(17,18,21,.05),0 24px 48px -20px rgba(17,18,21,.16);

  /* --- curvas --- */
  --ease:cubic-bezier(.16,1,.3,1);      /* Apple fluid */
  --ease-snap:cubic-bezier(.25,1,.5,1); /* salida rápida */

  --gut:clamp(1.5rem,4vw,3.5rem);
  --maxw:1240px;
}

[data-theme="dark"]{
  --bg:#0C0D0F;
  --bg-subtle:#121417;
  --card:#15171B;
  --card-2:#191C21;
  --border:#26292F;
  --border-strong:#3A3E47;
  --hairline:rgba(245,243,239,.10);
  --grid-line:rgba(245,243,239,.05);

  --ink:#F4F3F0;        /* 17.5 : 1 */
  --ink-muted:#8E939D;  /*  6.3 : 1 */
  --ink-soft:#83888F;   /*  4.8 : 1 */
  --pill:#F4F3F0;
  --pill-ink:#0C0D0F;
  --tag:#1B1E23;

  --gold:#C5A880;
  --gold-deep:#D9BE93;  /* 10.9 : 1 */

  --aevni:#C3B6DD;    --aevni-ink:#A496C1;
  --epifron:#A4C1E0;  --epifron-ink:#80A2C6;
  --ictino:#CEBC96;   --ictino-ink:#B19C70;
  --palian:#BEBBBB;   --palian-ink:#DFDADA;
  --pronos:#A8CBB1;   --pronos-ink:#87AA90;
  --talos:#A4BAB7;    --talos-ink:#C0D3D1;

  /* isotipos: sobre grafito la estructura vuelve a ser mármol y los
     acentos suben de luminosidad para no empastarse con la superficie */
  --mk-1:#F5F3EF; --mk-2:#B9BDC4; --mk-3:#6E727A;

  --aevni-1:#C3B6DD;   --aevni-2:#A496C1;   --aevni-3:#7A6D93;
  --epifron-1:#A4C1E0; --epifron-2:#80A2C6; --epifron-3:#597797;
  --ictino-1:#CEBC96;  --ictino-2:#B19C70;  --ictino-3:#85724B;
  --palian-1:#BEBBBB;  --palian-2:#7E7893;  --palian-3:#444054;
  --pronos-1:#A8CBB1;  --pronos-2:#F4FDD9;  --pronos-3:#6A8D73;
  --talos-1:#C0D3D1;   --talos-2:#A4BAB7;   --talos-3:#586F6C;

  --shadow:0 1px 2px rgba(0,0,0,.5),0 8px 24px -12px rgba(0,0,0,.7);
  --shadow-lift:0 2px 6px rgba(0,0,0,.6),0 28px 56px -24px rgba(0,0,0,.9);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:6rem}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  font-feature-settings:"ss01","cv11";
  -webkit-font-smoothing:antialiased;
  transition:background 420ms var(--ease),color 420ms var(--ease);
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:var(--ink);color:var(--bg)}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:6px}

/* ---------------------------------------------------------------- primitivas */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
.mono{font-family:var(--mono);font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.hand{font-family:var(--hand);font-size:1.3rem;color:var(--gold-deep);line-height:1.05}
.sect{padding:clamp(4rem,9vw,8rem) 0;position:relative}
.sect-alt{background:var(--bg-subtle);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sect-head{display:flex;align-items:flex-end;justify-content:space-between;gap:2rem;flex-wrap:wrap;
  margin-bottom:clamp(2rem,4vw,3rem)}
.sect-title{font-family:var(--display);font-size:clamp(1.875rem,3.6vw,2.875rem);font-weight:600;
  letter-spacing:-.038em;line-height:1.04;text-wrap:balance}
.sect-sub{color:var(--ink-muted);font-size:1rem;max-width:52ch;margin-top:.75rem;text-wrap:pretty}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;margin-bottom:1rem}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--gold);display:block}
.link-arrow{display:inline-flex;align-items:center;gap:.375rem;font-size:.875rem;color:var(--ink-muted);
  border-bottom:1px solid var(--border);padding-bottom:.25rem;
  transition:color 200ms,border-color 200ms}
.link-arrow:hover{color:var(--ink);border-color:var(--ink)}
.link-arrow span{transition:transform 260ms var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}

/* botones: 6 estados, sólo transform/opacity animados */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;border-radius:var(--r-pill);
  font-size:.9rem;font-weight:500;letter-spacing:-.005em;border:1px solid transparent;position:relative;
  transition:transform 180ms var(--ease-snap),background 200ms,border-color 200ms,color 200ms}
.btn .arw{transition:transform 260ms var(--ease)}
.btn:hover .arw{transform:translateX(3px)}
.btn-primary{background:var(--pill);color:var(--pill-ink);box-shadow:0 1px 2px rgba(17,18,21,.18)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--border);box-shadow:var(--shadow)}
.btn-ghost:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:.5rem 1rem;font-size:.82rem}
.btn-block{width:100%;justify-content:center}

.chip{display:inline-flex;align-items:center;gap:.4375rem;background:var(--tag);border:1px solid var(--border);
  border-radius:var(--r-pill);padding:.3125rem .75rem;font-family:var(--mono);font-size:.65rem;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-muted)}
.dot{width:5px;height:5px;border-radius:50%;background:currentColor;flex:none}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);
  position:relative;transition:transform 400ms var(--ease),border-color 400ms var(--ease)}
/* la sombra de hover vive en un pseudo-elemento: se anima opacidad, no box-shadow */
.lift::before{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:var(--shadow-lift);
  opacity:0;pointer-events:none;transition:opacity 400ms var(--ease)}
.lift:hover::before{opacity:1}
.lift:hover{transform:translateY(-4px);border-color:var(--border-strong)}

.rv{opacity:0;transform:translateY(21px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;
    transition-duration:.01ms !important}
}

/* ---------------------------------------------------------------------- nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;border-bottom:1px solid transparent;
  transition:background 320ms var(--ease),border-color 320ms var(--ease)}
.nav.stuck{background:color-mix(in srgb,var(--bg) 80%,transparent);backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);border-bottom-color:var(--border)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:.75rem var(--gut);display:flex;align-items:center;gap:1.5rem}
.brand{display:flex;align-items:center;gap:.625rem;margin-right:auto}
.brand .mark{width:27px;height:27px;color:var(--ink);transition:transform 400ms var(--ease)}
.brand:hover .mark{transform:rotate(-180deg)}
.brand-txt{font-family:var(--display);font-weight:600;font-size:1rem;letter-spacing:-.02em;line-height:1}
.brand-txt small{display:block;font-family:var(--mono);font-size:.53rem;letter-spacing:.32em;color:var(--ink-soft);
  text-transform:uppercase;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:.125rem}
.nav-links a{padding:.4375rem .75rem;border-radius:var(--r-pill);font-size:.875rem;color:var(--ink-muted);
  transition:color 200ms,background 200ms}
.nav-links a:hover{color:var(--ink);background:var(--tag)}
.nav-actions{display:flex;align-items:center;gap:.5rem}
.icon-btn{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--border);border-radius:var(--r-pill);
  background:var(--card);color:var(--ink-muted);
  transition:color 200ms,border-color 200ms,transform 180ms var(--ease-snap)}
.icon-btn:hover{color:var(--ink);border-color:var(--border-strong);transform:translateY(-1px)}
.icon-btn:active{transform:scale(.94)}
.icon-btn svg{width:16px;height:16px}
[data-theme="light"] .ico-moon{display:block}
[data-theme="light"] .ico-sun{display:none}
[data-theme="dark"] .ico-moon{display:none}
[data-theme="dark"] .ico-sun{display:block}
@media (max-width:960px){.nav-links{display:none}.nav-cta{display:none}}

/* --------------------------------------------------------------------- hero */
.hero{position:relative;padding:clamp(8rem,15vw,11rem) 0 clamp(3rem,6vw,4rem);overflow:hidden}
.hero-bg{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:89px 89px;background-position:center top;
  mask-image:radial-gradient(120% 88% at 50% 0%,#000 18%,transparent 76%);
  -webkit-mask-image:radial-gradient(120% 88% at 50% 0%,#000 18%,transparent 76%)}
.hero-in{position:relative}
.hero h1{font-family:var(--display);font-weight:600;letter-spacing:-.045em;line-height:.97;
  font-size:clamp(2.75rem,7.4vw,5.875rem);max-width:18ch;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--ink-muted)}
.hero-lead{margin-top:1.5rem;font-size:clamp(1rem,1.5vw,1.125rem);color:var(--ink-muted);max-width:58ch;
  line-height:1.64;text-wrap:pretty}
.hero-lead strong{color:var(--ink);font-weight:500}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-top:2rem}
.hero-note{display:flex;align-items:center;gap:.375rem;padding-left:.5rem}
.hero-note svg{width:38px;height:24px;color:var(--gold);flex:none}

.metrics{margin-top:clamp(3rem,6vw,4rem);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:1.5rem;border-right:1px solid var(--border)}
.metric:last-child{border-right:none}
.metric-v{font-family:var(--display);font-size:clamp(1.5rem,2.6vw,2rem);font-weight:600;
  letter-spacing:-.042em;line-height:1;font-variant-numeric:tabular-nums}
.metric-l{margin-top:.5rem;font-size:.8125rem;color:var(--ink-muted);line-height:1.42;max-width:28ch}
@media (max-width:760px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2n){border-right:none}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--border)}
}

/* ---------------------------------------------------------------- ecosistema */
.eco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
@media (max-width:1020px){.eco-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:660px){.eco-grid{grid-template-columns:1fr}}

.div-card{padding:1.5rem;display:flex;flex-direction:column;min-height:280px;overflow:hidden}
.div-card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:radial-gradient(120% 90% at 90% 0%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 62%);
  opacity:0;transition:opacity 480ms var(--ease)}
.div-card:hover::after{opacity:1}
.div-top{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}
/* los isotipos son policromos: la caja sólo aporta superficie y perímetro */
.div-mark{width:52px;height:52px;border:1px solid var(--border);border-radius:var(--r-md);display:grid;place-items:center;
  background:var(--card-2);flex:none;transition:border-color 400ms var(--ease),transform 400ms var(--ease)}
.div-mark svg{width:32px;height:32px}
.div-card:hover .div-mark{transform:scale(1.04)}
.div-card:hover .div-mark{border-color:color-mix(in srgb,var(--accent) 45%,var(--border))}
.div-el{font-family:var(--mono);font-size:.625rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-ink);display:inline-flex;align-items:center;gap:.375rem;white-space:nowrap}
.div-name{font-family:var(--display);font-size:1.5rem;font-weight:600;letter-spacing:-.03em;line-height:1}
.div-cat{margin-top:.375rem;font-family:var(--mono);font-size:.65rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-soft)}
.div-desc{margin-top:.875rem;font-size:.9375rem;color:var(--ink-muted);line-height:1.58;max-width:46ch;text-wrap:pretty}
.div-foot{margin-top:auto;padding-top:1.25rem;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;border-top:1px solid var(--hairline)}
.div-spec{font-family:var(--mono);font-size:.6875rem;letter-spacing:.04em;color:var(--ink)}
.div-spec + .div-spec{color:var(--ink-soft)}

/* celda ancha: puente hacia la plataforma común (rompe la simetría 3×2) */
.eco-bridge{grid-column:span 3;padding:1.5rem 2rem;display:flex;align-items:center;justify-content:space-between;
  gap:1.5rem;flex-wrap:wrap;background:var(--card-2)}
@media (max-width:1020px){.eco-bridge{grid-column:span 2}}
@media (max-width:660px){.eco-bridge{grid-column:span 1}}
.eco-bridge p{font-size:.9375rem;color:var(--ink-muted);max-width:62ch;text-wrap:pretty}
.eco-bridge strong{color:var(--ink);font-weight:500}

/* ---------------------------------------------------------------- plataforma */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:1.25rem}
.bento > *{padding:2rem}
.b-6{grid-column:span 6}
.b-4{grid-column:span 4}
.b-3{grid-column:span 3}
.b-2{grid-column:span 2}
@media (max-width:1020px){.b-4,.b-3,.b-2{grid-column:span 6}.bento > *{padding:1.5rem}}
.feat-idx{font-family:var(--mono);font-size:.65rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-soft);display:block}
.feat-t{font-family:var(--display);font-size:1.1875rem;font-weight:600;letter-spacing:-.026em;
  margin-top:.75rem;line-height:1.24;text-wrap:balance}
.feat-d{margin-top:.5rem;font-size:.9375rem;color:var(--ink-muted);line-height:1.56;max-width:56ch;text-wrap:pretty}
.kv-list{margin-top:1.25rem;display:flex;flex-direction:column;gap:.5rem}
.kv{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding-bottom:.5rem;
  border-bottom:1px solid var(--hairline)}
.kv:last-child{border-bottom:none;padding-bottom:0}
.kv span:first-child{font-size:.875rem;color:var(--ink-muted)}
.kv span:last-child{font-family:var(--mono);font-size:.7188rem;color:var(--ink);white-space:nowrap}

/* terminal: superficie tonal, sin borde (evita borde dentro de borde) */
.code-block{margin-top:1.25rem;background:var(--bg-subtle);border-radius:var(--r-md);
  padding:1rem 1.125rem;font-family:var(--mono);font-size:.7344rem;line-height:1.85;color:var(--ink-muted);
  overflow-x:auto}
[data-theme="dark"] .code-block{background:#0E1013}
.code-block .c-key{color:var(--ink)}
.code-block .c-gold{color:var(--gold-deep)}
.code-block .c-dim{color:var(--ink-soft)}
.code-head{display:flex;align-items:center;gap:.4375rem;margin-bottom:.75rem;padding-bottom:.75rem;
  border-bottom:1px solid var(--hairline)}
.code-head i{width:9px;height:9px;border-radius:50%;background:var(--border-strong);display:block}

.phi-visual{display:grid;place-items:center;background:var(--card-2)}
.phi-visual svg{width:100%;max-width:320px;color:var(--ink)}

/* ------------------------------------------------------------------ precios */
.price-toggle{display:inline-flex;align-items:center;gap:.25rem;background:var(--tag);border:1px solid var(--border);
  border-radius:var(--r-pill);padding:.25rem}
.price-toggle button{padding:.4375rem 1rem;border-radius:var(--r-pill);font-size:.82rem;font-weight:500;
  color:var(--ink-muted);transition:background 280ms var(--ease),color 280ms var(--ease),transform 160ms var(--ease-snap)}
.price-toggle button:active{transform:scale(.96)}
.price-toggle button[aria-pressed="true"]{background:var(--pill);color:var(--pill-ink)}
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;align-items:stretch}
@media (max-width:1080px){.price-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.price-grid{grid-template-columns:1fr}}
.plan{padding:1.5rem;display:flex;flex-direction:column}
.plan-featured{border-color:var(--ink)}
.plan-featured::before{opacity:1}
.plan-tag{position:absolute;top:1.5rem;right:1.5rem}
.plan-tag .chip{background:var(--gold);border-color:var(--gold);color:#191510}
.plan-name{font-family:var(--display);font-size:1.125rem;font-weight:600;letter-spacing:-.02em}
.plan-for{margin-top:.25rem;font-size:.8125rem;color:var(--ink-muted);min-height:2.6em;line-height:1.4;max-width:30ch}
.plan-price{margin-top:1.25rem;display:flex;align-items:baseline;gap:.3125rem}
.plan-amount{font-family:var(--display);font-size:2.5rem;font-weight:600;letter-spacing:-.05em;line-height:1;
  font-variant-numeric:tabular-nums}
.plan-per{font-size:.8125rem;color:var(--ink-muted)}
.plan-annual{margin-top:.375rem;font-family:var(--mono);font-size:.65rem;letter-spacing:.06em;
  color:var(--gold-deep);min-height:1.2em}
.plan-cta{margin-top:1.25rem}
.plan-feats{margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--hairline);list-style:none;
  display:flex;flex-direction:column;gap:.6875rem}
.plan-feats li{display:flex;gap:.5625rem;font-size:.875rem;color:var(--ink-muted);line-height:1.45}
.plan-feats svg{width:14px;height:14px;flex:none;margin-top:.3125rem;color:var(--gold-deep)}
.plan-feats b{color:var(--ink);font-weight:500}

/* calculadora ROI */
.roi{margin-top:1.25rem;display:grid;grid-template-columns:1.618fr 1fr;gap:1.25rem}
@media (max-width:900px){.roi{grid-template-columns:1fr}}
.roi-panel,.roi-side{padding:2rem}
@media (max-width:660px){.roi-panel,.roi-side{padding:1.5rem}}
.roi-label{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.roi-input-row{margin-top:1rem;display:flex;align-items:center;gap:.75rem}
.roi-field{display:flex;align-items:center;gap:.375rem;background:var(--bg-subtle);border:1px solid var(--border);
  border-radius:var(--r-pill);padding:.5rem 1rem;font-family:var(--mono);font-size:.9rem;
  transition:border-color 200ms}
.roi-field:focus-within{border-color:var(--ink)}
.roi-field input{width:8ch;background:none;border:none;color:var(--ink);font:inherit;text-align:left}
.roi-field input:focus{outline:none}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:2px;background:var(--border-strong);
  border-radius:2px;margin-top:1.5rem}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:var(--pill);border:3px solid var(--card);box-shadow:0 1px 6px rgba(0,0,0,.25);cursor:grab}
input[type=range]:active::-webkit-slider-thumb{cursor:grabbing;transform:scale(1.08)}
input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--pill);
  border:3px solid var(--card);cursor:grab}
.roi-out{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1.5rem;padding-top:1.25rem;
  border-top:1px solid var(--hairline)}
@media (max-width:560px){.roi-out{grid-template-columns:1fr;gap:1.25rem}}
.roi-out div span{display:block}
.roi-k{font-family:var(--mono);font-size:.625rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}
.roi-v{font-family:var(--display);font-size:1.5rem;font-weight:600;letter-spacing:-.04em;margin-top:.375rem;
  font-variant-numeric:tabular-nums}
.roi-side{display:flex;flex-direction:column;justify-content:space-between;gap:1.25rem;background:var(--card-2)}
.roi-formula{font-family:var(--mono);font-size:.6875rem;line-height:1.9;color:var(--ink-muted)}
.roi-side p{font-size:.875rem;color:var(--ink-muted);line-height:1.55;max-width:44ch;text-wrap:pretty}

/* --------------------------------------------------------------- manifiesto */
.manifest{display:grid;grid-template-columns:1fr 1.618fr;gap:clamp(2rem,5vw,4rem);align-items:start}
@media (max-width:900px){.manifest{grid-template-columns:1fr}}
.manifest-q{font-family:var(--display);font-size:clamp(1.375rem,2.6vw,2rem);font-weight:500;letter-spacing:-.032em;
  line-height:1.24;text-wrap:balance}
.manifest-q b{font-weight:600}
.manifest-body p{color:var(--ink-muted);font-size:1rem;line-height:1.7;max-width:68ch;text-wrap:pretty}
.manifest-body p + p{margin-top:1rem}
.rules{margin-top:2rem;display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem}
@media (max-width:660px){.rules{grid-template-columns:1fr}}
.rule{padding:1.25rem;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md)}
.rule-n{font-family:var(--mono);font-size:.65rem;letter-spacing:.14em;color:var(--gold-deep)}
.rule-t{margin-top:.5rem;font-weight:500;font-size:.9375rem;letter-spacing:-.01em;color:var(--ink)}
.rule-d{margin-top:.375rem;font-size:.875rem;color:var(--ink-muted);line-height:1.5;max-width:44ch;text-wrap:pretty}

/* -------------------------------------------------------------------- cierre */
.cta-band{padding:clamp(2.5rem,5vw,3.5rem);text-align:center;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:34px 34px;mask-image:radial-gradient(80% 100% at 50% 100%,#000,transparent 70%);
  -webkit-mask-image:radial-gradient(80% 100% at 50% 100%,#000,transparent 70%)}
.cta-band > *{position:relative}
.cta-band h2{font-family:var(--display);font-size:clamp(1.75rem,3.4vw,2.5rem);font-weight:600;letter-spacing:-.04em;
  line-height:1.05;text-wrap:balance}
.cta-band p{margin:1rem auto 0;color:var(--ink-muted);max-width:52ch;text-wrap:pretty}
.cta-band .hero-cta{justify-content:center;margin-top:1.75rem}

/* --------------------------------------------------------------------- footer */
.foot{border-top:1px solid var(--border);background:var(--bg-subtle);padding-top:clamp(3rem,6vw,4rem)}
.foot-grid{display:grid;grid-template-columns:1.618fr repeat(3,1fr);gap:2rem}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}
.foot-col h4{font-family:var(--mono);font-size:.65rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);
  margin-bottom:1rem;font-weight:400}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:.625rem}
.foot-col a{font-size:.9rem;color:var(--ink-muted);transition:color 200ms}
.foot-col a:hover{color:var(--ink)}
.foot-lead{max-width:34ch;color:var(--ink-muted);font-size:.9rem;line-height:1.6;margin-top:1rem;text-wrap:pretty}
.foot-word{margin-top:clamp(3rem,7vw,4.5rem);border-top:1px solid var(--border);padding-top:2rem;overflow:hidden}
.foot-word svg{width:100%;height:auto;color:var(--ink);opacity:.1}
.foot-bar{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;
  padding:1.5rem 0 2rem;border-top:1px solid var(--border);margin-top:1rem}
.foot-bar p{font-size:.8125rem;color:var(--ink-muted);font-family:var(--mono);letter-spacing:.02em}
.to-top{display:inline-flex;align-items:center;gap:.375rem;font-size:.8125rem;color:var(--ink-muted);
  transition:color 200ms}
.to-top:hover{color:var(--ink)}
.to-top span{transition:transform 260ms var(--ease)}
.to-top:hover span{transform:translateY(-3px)}

/* barra de progreso: escala en GPU, nunca width */
.progress{position:fixed;top:0;left:0;height:2px;width:100%;background:var(--gold);z-index:70;
  transform:scaleX(0);transform-origin:0 50%;will-change:transform}