/* ============================================================
   DoorKnocker — estilos
   ============================================================ */
:root{
  --bg:#05070a;
  --panel-bg:#1e2225;          /* fondo compartido secciones A–D */
  --text:#fff;
  --muted:#aeb4bd;
  --dim:#6b7178;
  --mono:'JetBrains Mono','SF Mono',Menlo,Consolas,monospace;
  --square:'Space Mono','JetBrains Mono',monospace;  /* llaves cuadradas */
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:var(--sans);overflow-x:clip}

/* ============================================================
   HERO — fondo: video
   ============================================================ */
.hero{position:relative;height:100vh;min-height:640px;overflow:hidden;background:#04060a}
.hero__video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}

/* ============================================================
   NAV (recuadro flotante)
   ============================================================ */
.nav{position:fixed;top:16px;left:16px;right:16px;z-index:100;
  display:flex;flex-direction:column;justify-content:center;
  height:66px;padding:0 30px;
  background:rgba(20,24,30,.6);transition:background .3s ease}
.nav__bar{display:flex;align-items:center;justify-content:space-between;width:100%;height:66px}
.nav__logo{height:66px;width:auto;display:block;transition:filter .3s ease}

/* fila de menú: oculta por defecto */
.nav__menu{display:none}
.nav__burger{cursor:pointer}
.nav__col{position:relative}
.nav__sub{display:flex;flex-direction:column}
.nav__sub a{text-decoration:none;transition:color .2s,background .15s}

/* ── HERO OSCURO: el botón de 3 líneas amplía la barra (mega-menú) ── */
.nav.nav--open{height:auto;align-items:stretch;padding-bottom:28px}
.nav.nav--open .nav__menu{display:flex;flex-direction:row;flex-wrap:wrap;
  align-items:flex-start;gap:72px;width:100%;margin-top:18px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);font-family:var(--sans)}
.nav.nav--open .nav__col{display:flex;flex-direction:column;gap:3px;min-width:168px}
.nav.nav--open .nav__coltitle{font-size:16px;font-weight:700;letter-spacing:.04em;
  text-transform:uppercase;color:#fff;margin-bottom:14px}
.nav.nav--open .nav__sub a{color:#aeb4bd;font-size:16px;line-height:1.2;padding:7px 0}
.nav.nav--open .nav__sub a:hover{color:#fff}

/* ── SECCIÓN BLANCA: barra blanca + fila de botones con línea de hover ── */
.nav--light{top:0;left:0;right:0;height:auto;padding:0 44px;
  background:#fff;justify-content:flex-start}
.nav--light .nav__logo{filter:invert(1)}        /* logo blanco → negro */
.nav--light .icon-btn{background:#0e1116;border-color:#0e1116}
.nav--light .nav__burger{display:none}
.nav--light .nav__menu{display:flex;flex-direction:row;align-items:center;gap:40px;
  width:100%;padding:18px 0 24px;margin-top:0;
  font-family:var(--sans);font-size:18px}
.nav--light .nav__coltitle{position:relative;color:#5a6068;cursor:pointer;transition:color .2s}
.nav--light .nav__col:hover .nav__coltitle{color:#0e1116}
/* línea negra arriba al pasar el mouse */
.nav--light .nav__coltitle::before{content:"";position:absolute;top:-10px;left:0;
  width:44px;height:1px;background:#0e1116;opacity:0;transition:opacity .2s}
.nav--light .nav__col:hover .nav__coltitle::before{opacity:1}
/* dropdown blanco de cada botón */
.nav--light .nav__sub{position:absolute;top:100%;left:-12px;min-width:222px;margin-top:16px;
  padding:8px;background:#fff;border:1px solid rgba(0,0,0,.1);border-radius:8px;
  box-shadow:0 20px 54px rgba(0,0,0,.14);
  opacity:0;visibility:hidden;transform:translateY(-6px);pointer-events:none;
  transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:30}
.nav--light .nav__col:hover .nav__sub{opacity:1;visibility:visible;transform:none;pointer-events:auto}
.nav--light .nav__sub::before{content:"";position:absolute;top:-16px;left:0;right:0;height:16px}
.nav--light .nav__sub a{display:block;padding:10px 13px;color:#5a6068;border-radius:5px;
  font-size:15px;white-space:nowrap}
.nav--light .nav__sub a:hover{background:#f2f3f5;color:#0e1116}

.nav__right{display:flex;align-items:center;gap:14px}
.btn-start{background:#0e1116;color:#fff;border:1px solid rgba(255,255,255,.22);
  font-size:15px;font-weight:400;padding:12px 28px;border-radius:3px;cursor:pointer;
  transition:background .2s,border-color .2s}
.btn-start:hover{background:#171b22;border-color:rgba(255,255,255,.45)}
.icon-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);border-radius:3px;background:rgba(14,17,22,.4);
  cursor:pointer;transition:background .2s,border-color .2s}
.icon-btn:hover{background:rgba(23,27,34,.6);border-color:rgba(255,255,255,.4)}
.icon-btn svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.6}

/* ============================================================
   HERO — bloque inferior (franja + wordmark apilados)
   ============================================================ */
.hero__bottom{position:absolute;left:0;right:0;bottom:0;z-index:13;
  display:flex;flex-direction:column}
.meta{display:flex;justify-content:space-between;gap:40px;flex-wrap:nowrap;
  margin-left:50%;padding:0 34px 18px 0}
.meta__col{font-family:var(--mono);font-size:10px;line-height:1.15;letter-spacing:.04em;
  color:#fff;text-transform:uppercase;max-width:160px;flex-shrink:0;white-space:nowrap;
  border-left:1px solid rgba(255,255,255,.18);padding-left:14px}
.wordmark{text-align:center;margin:0;
  font-family:var(--sans);font-weight:500;letter-spacing:-.02em;line-height:.82;
  font-size:clamp(48px,15.5vw,240px);
  color:#cfd3da;
  user-select:none;pointer-events:none;padding-bottom:.04em}
/* parpadeo independiente por letra (ritmo desincronizado por JS) */
.wm-letter{display:inline-block;will-change:opacity;
  animation-name:wm-flicker;animation-iteration-count:infinite;animation-timing-function:ease-in-out}
@keyframes wm-flicker{
  0%,100%{opacity:1}
  22%{opacity:1} 24%{opacity:.18} 26%{opacity:1}
  67%{opacity:1} 70%{opacity:.5} 73%{opacity:1}
}

/* ============================================================
   SECCIONES A–D — fondo sólido compartido (#1e2225)
   ============================================================ */
.panel{position:relative;background:var(--panel-bg);color:var(--text);
  min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;
  padding:0 24px;overflow:hidden}

/* barra superior de la sección */
.panel__topbar{position:absolute;top:0;left:0;right:0;z-index:6;
  display:flex;justify-content:space-between;align-items:center;
  padding:30px 70px;font-family:var(--sans);font-size:18px;font-weight:400;letter-spacing:normal;
  text-transform:uppercase;color:var(--muted)}
.panel__topbar .mid{color:#fff}
/* fuente con llaves cuadradas SOLO para las llaves { } */
.brace{font-family:var(--square);color:#fff}

/* botón Get Started del topbar (texto plano, sin margen ni borde) */
.topbar-btn{font-family:var(--sans);font-size:18px;font-weight:400;letter-spacing:normal;
  text-transform:uppercase;color:var(--muted);background:transparent;
  border:0;padding:0;margin:0;cursor:pointer;transition:color .2s}
.topbar-btn:hover{color:#fff}

/* riel lateral A B C D — fijo, aparece al entrar a las secciones */
.srail{position:fixed;left:10px;top:calc(50% + 41px);
  transform:translateY(-50%) translateX(-22px);z-index:90;
  display:flex;flex-direction:column;gap:6px;
  font-family:var(--sans);font-size:18px;font-weight:400;letter-spacing:.04em;line-height:1.1;
  color:var(--dim);opacity:0;visibility:hidden;
  transition:opacity .5s ease,visibility .5s,transform .55s cubic-bezier(.22,1,.36,1)}
.srail.show{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.srail>button{display:block;width:2.2em;text-align:center;
  font:inherit;letter-spacing:inherit;color:inherit;
  background:none;border:0;padding:0;margin:0;cursor:pointer;outline:none;
  transition:color .2s}
.srail>button:not(.on):hover{color:#cfd3da}
.srail-bk{display:inline}
.srail .on{color:#fff}

/* animaciones de entrada */
[data-anim]{opacity:0}
[data-anim="fade"]{transition:opacity 1s ease}
[data-anim="up"]{transform:translateY(42px);
  transition:opacity 1.1s ease,transform 1.1s cubic-bezier(.22,1,.36,1)}
[data-anim].anim-in{opacity:1;transform:none}
[data-anim].no-trans{transition:none!important}

/* corchetes del riel — ocultos hasta después del slide-in */
.srail-bk{opacity:0}
.srail-bk.bk-visible{opacity:1}

/* contenido centrado */
.panel__center{position:relative;z-index:5;text-align:center;max-width:1040px}
.big-heading{font-family:var(--sans);font-weight:400;letter-spacing:-.035em;line-height:1.05;
  font-size:clamp(48px,8vw,108px);color:#f3f4f6}
.panel__sub{margin-top:36px;font-family:var(--sans);font-size:17px;line-height:1.55;color:var(--muted)}

/* ============================================================
   IMAGEN A PANTALLA COMPLETA (debajo del texto)
   ============================================================ */
.shot{position:relative;height:100vh;background:var(--panel-bg);overflow:hidden;margin-top:-12vh}
.shot__img{width:100%;height:100%;object-fit:cover;object-position:center;display:block;
  will-change:clip-path;
  clip-path:inset(6% 30% 80% 30% round 8px)}

/* ============================================================
   CTA / PRE-FOOTER (fondo blanco)
   ============================================================ */
.cta{background:#fff;color:#0e1116;padding:150px 44px 90px}
.caret{font-size:10px;opacity:.7}

/* botón superior dentro de la tarjeta (sin fondo) */
.cta__cta{display:flex;align-items:center;justify-content:space-between;gap:24px;
  text-decoration:none;color:inherit;
  font-family:var(--sans);font-weight:400;letter-spacing:-.02em;
  font-size:clamp(28px,3vw,44px)}
.cta__arrow{flex-shrink:0;width:50px;height:50px;border-radius:50%;
  border:1px solid currentColor;
  display:flex;align-items:center;justify-content:center}
.cta__arrow svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round}

/* grid de dos columnas */
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}

/* columna de texto que reemplaza la tarjeta */
.cta__text{display:flex;flex-direction:column;justify-content:center;gap:24px;padding:10px 8px}
.cta__heading{font-family:var(--sans);font-weight:400;letter-spacing:-.03em;line-height:1.04;
  font-size:clamp(32px,3.6vw,54px);color:#0e1116}
.cta__text p{font-family:var(--sans);font-size:17px;line-height:1.62;color:#5a6068;max-width:560px}

/* tarjeta izquierda — blanca por defecto, oscura al pasar el cursor */
.cta__panel{position:relative;background:#fff;border:1px solid rgba(0,0,0,.1);
  border-radius:16px;overflow:hidden;
  aspect-ratio:1/1;padding:30px 38px 40px;color:#0e1116;
  display:flex;flex-direction:column;justify-content:space-between}
.cta__corners{position:absolute;z-index:2;top:35%;left:38px;right:38px;
  transform:translateY(-50%);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--sans);font-size:14px;letter-spacing:.06em;color:#5a6068}
.cta__corners .brace{font-family:var(--square);color:inherit}
.cta__watermark{position:absolute;top:35%;left:50%;transform:translate(-50%,-50%);
  width:310px;height:auto;opacity:.12;pointer-events:none;user-select:none;
  filter:invert(1)}
.cta__title{position:relative;z-index:2;
  font-family:var(--sans);font-weight:400;letter-spacing:-.02em;line-height:1.15;
  font-size:clamp(30px,3.4vw,48px);color:#c2c7cd}

/* hover: vuelve al color oscuro original (cambio directo, sin animación) */
.cta__panel:hover{background:#15181b;border-color:#15181b;color:#f3f4f6}
.cta__panel:hover .cta__corners{color:#cfd3da}
.cta__panel:hover .cta__watermark{filter:invert(0)}

/* imagen derecha */
.cta__media{border-radius:16px;overflow:hidden;aspect-ratio:1/1;background:#0e1012}
.cta__media img{width:100%;height:100%;object-fit:cover;display:block}

/* ============================================================
   ESPACIO RESERVADO entre secciones (editable después)
   ============================================================ */
.section-gap{height:80px;background:#fff}

/* ============================================================
   SECCIÓN 0.1 — encabezado + descripción (fondo blanco)
   ============================================================ */
.feat{background:#fff;color:#0e1116;padding:40px 44px 120px}
.feat__wrap{max-width:1440px;margin:0 auto}

/* columna izquierda: stepper + título; la línea coincide con el ancho del título.
   sticky → el título acompaña el scroll hasta que termina el video/detalles */
.feat__left{display:flex;flex-direction:column;gap:56px;min-width:0;
  position:sticky;top:96px;align-self:start}
.feat__stepline{display:flex;align-items:center;gap:20px;
  font-family:var(--sans);font-size:19px;letter-spacing:.03em;color:#0e1116}
.feat__step{flex-shrink:0}
.feat__step.on{color:#0e1116}
.feat__step .brace{font-family:var(--square);color:inherit}
.feat__bk{opacity:1}
.feat__dim{color:#b4b9c0}
.feat__line{flex:1;height:2px;background:rgba(0,0,0,.16)}
.feat__line--short{flex:0 0 60px}

/* dos columnas: misma distribución en las 3 secciones
   (izquierda fija → la línea coincide; gap amplio; derecha llena la columna) */
.feat__grid{display:grid;grid-template-columns:clamp(360px,40vw,560px) minmax(0,1fr);
  gap:clamp(64px,7vw,130px);align-items:start;margin-bottom:72px}
.feat__title{font-family:var(--sans);font-weight:400;letter-spacing:-.03em;
  line-height:1.02;font-size:clamp(36px,4.2vw,56px);color:#0e1116}
.feat__body{display:flex;flex-direction:column;gap:28px;max-width:none;
  font-family:var(--sans);font-size:clamp(20px,1.55vw,26px);line-height:1.45;color:#6b7178}
.feat__body .feat__note{font-size:clamp(15px,1vw,17px);line-height:1.5;color:#aeb4bd}

/* toggle VIDEO / DETAILS (debajo de la info derecha) */
.feat__toggle{display:flex;justify-content:flex-start;gap:10px;margin-top:20px}
.feat__pill{font-family:var(--sans);font-size:12px;letter-spacing:.08em;
  padding:9px 24px;border-radius:20px;border:1px solid rgba(0,0,0,.16);
  background:transparent;color:#6b7178;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease}
.feat__pill:hover{border-color:rgba(0,0,0,.34);color:#0e1116}
.feat__pill.is-on{background:#0e1116;border-color:#0e1116;color:#fff}

/* panel VIDEO / DETALLES (debajo del toggle, en la columna derecha) */
.feat__panel{margin-top:26px;width:100%}
.feat__hidden{display:none !important}

/* modo video */
.feat__video{width:100%;aspect-ratio:16/9;background:#000;border-radius:16px;
  overflow:hidden;border:1px solid rgba(0,0,0,.1)}
.feat__video video{width:100%;height:100%;object-fit:cover;display:block}

/* modo detalles: rejilla 2 columnas con divisores finos */
.feat__details{display:grid;grid-template-columns:1fr 1fr;gap:1px;
  background:rgba(0,0,0,.1);border:1px solid rgba(0,0,0,.1);
  border-radius:12px;overflow:hidden}
.feat__detail{background:#fff;padding:22px 24px;display:flex;flex-direction:column;gap:8px}
.feat__dk{font-family:'IBM Plex Mono',var(--mono);font-size:11px;font-weight:500;
  text-transform:uppercase;letter-spacing:.12em;color:rgba(0,0,0,.45)}
.feat__dv{font-family:'IBM Plex Mono',var(--mono);font-size:15px;font-weight:700;color:#0e1116}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:760px){
  /* nav fijo a la pantalla: logo (arriba) y barra de acciones (abajo) acompañan el scroll */
  .nav{position:fixed;inset:0;height:auto;padding:0;background:transparent;
    display:block;pointer-events:none}
  .nav__bar{position:fixed;top:0;left:0;right:0;height:auto;padding:14px 16px;pointer-events:auto}
  .nav__logo{height:64px}
  /* barra inferior: menú a la izquierda, Get Started a la derecha */
  .nav__right{position:fixed;left:0;right:0;bottom:0;gap:10px;align-items:center;
    padding:14px 16px calc(14px + env(safe-area-inset-bottom));pointer-events:auto}
  .nav__burger{order:1;display:flex}
  .btn-start{order:3;margin-left:auto;padding:11px 22px;font-size:14px}
  .icon-btn{width:42px;height:42px}
  /* el nav persiste sobre secciones blancas: neutralizar el modo claro de escritorio */
  .nav--light .nav__menu{display:none}        /* el menú solo se abre con el botón */
  .nav--light .nav__burger{display:flex}      /* mantener visible el botón de menú */
  /* aire al final para que el footer no quede tapado por la barra fija */
  .master-footer{padding-bottom:92px}
  /* menú desplegado: panel inferior (no recortado por el hero) */
  .nav.nav--open .nav__menu{position:fixed;left:0;right:0;top:auto;
    bottom:calc(72px + env(safe-area-inset-bottom));
    flex-direction:column;flex-wrap:nowrap;gap:0;width:100%;margin:0;
    padding:6px 18px 14px;border-top:0;
    background:rgba(10,12,16,.97);backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);max-height:68vh;overflow:auto;pointer-events:auto}
  .nav.nav--open .nav__col{min-width:0;padding:14px 0;
    border-bottom:1px solid rgba(255,255,255,.1)}
  .cta__nav{gap:18px;font-size:12px;flex-wrap:wrap}
  .cta__grid{grid-template-columns:1fr}
  .cta__panel,.cta__media{min-height:300px}
  .feat{padding:64px 20px 80px}        /* aire arriba: el título no queda bajo el logo fijo */
  .feat__grid{grid-template-columns:1fr;gap:28px}
  .feat__details{grid-template-columns:1fr}
  .feat__left{position:static;top:auto}
  .site-footer{padding:60px 22px 32px}
  .foot__top{grid-template-columns:1fr;gap:48px;min-height:0}
  .foot__brand{gap:32px}
  .foot__bottom{flex-direction:column;align-items:flex-start;gap:26px}
  .foot__col a{font-size:19px}
  .feat__steps{gap:10px;margin-bottom:40px}
  .section-gap{height:90px}
  /* hero estilo Palantir: meta vertical a la izquierda, wordmark vertical a la derecha */
  .hero__bottom{top:0;display:block}
  .meta{position:absolute;left:16px;top:104px;margin-left:0;flex-direction:column;
    align-items:flex-start;gap:30px;padding:0;max-width:58%}
  .meta__col{font-size:10px;line-height:1.28;max-width:none;white-space:normal;
    padding-left:12px;border-left:1px solid rgba(255,255,255,.45)}
  .wordmark{position:absolute;right:6px;top:50%;left:auto;bottom:auto;
    transform:translateY(-50%);writing-mode:vertical-rl;text-orientation:mixed;
    white-space:nowrap;text-align:center;height:auto;padding:0;line-height:.92;
    font-size:min(15.5vw,8.6vh);color:#cfd3da}
  /* topbar de cada panel: visible en móvil (como escritorio), compacto y
     despejando el logo flotante de arriba */
  .panel__topbar{display:flex;padding:32px 16px 0;font-size:11px;letter-spacing:.02em}
  .topbar-btn{font-size:11px}
  .big-heading{font-size:clamp(32px,8vw,56px)}
  /* riel A/B/C/D: vertical en el borde izquierdo (1.5× más grande) */
  .srail{display:flex;left:6px;font-size:20px;gap:6px}
  .srail>button{width:1.8em}
}

/* enlaces que usan estilo de botón: sin subrayado */
.btn-start,.topbar-btn{text-decoration:none;display:inline-flex;align-items:center;justify-content:center}

/* ============================================================
   FAQ — Preguntas frecuentes
   ============================================================ */
.faq{background:var(--bg);padding:110px 24px 120px}
.faq__wrap{max-width:900px;margin:0 auto}
.faq__eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted);display:inline-block;margin-bottom:22px}
.faq__eyebrow .brace{font-family:var(--square);color:#fff}
.faq__title{font-family:var(--sans);font-weight:500;letter-spacing:-.02em;
  font-size:clamp(32px,5vw,56px);line-height:1.05;color:#fff;margin-bottom:56px}
.faq__list{display:flex;flex-direction:column}
.faq__item{padding:30px 0;border-top:1px solid rgba(255,255,255,.12)}
.faq__item:last-child{border-bottom:1px solid rgba(255,255,255,.12)}
.faq__q{font-family:var(--sans);font-weight:500;font-size:clamp(18px,2vw,23px);
  line-height:1.3;color:#fff;margin-bottom:14px;letter-spacing:-.01em}
.faq__a{font-family:var(--sans);font-size:clamp(15px,1.4vw,17px);line-height:1.6;
  color:var(--muted);max-width:760px}
.faq__a a{color:#fff;text-decoration:underline;text-underline-offset:2px}
@media(max-width:760px){
  .faq{padding:72px 18px 84px}
  .faq__title{margin-bottom:40px}
  .faq__item{padding:24px 0}
}