/* AI Society — sistema visual del sitio (modo claro, brandbook adaptado)
   Marca: púrpura #7C3AED / #6D28D9 · módulos redondeados · Inter */

:root{
  --ink:#17121F;          /* texto principal */
  --ink-2:#544E63;        /* texto secundario */
  --ink-3:#6E677E;        /* metadata (≥4.5:1 sobre blanco) */
  --ink-soft:#8B8599;     /* solo para display grande (≥3:1) */
  --paper:#FFFFFF;        /* fondo base */
  --paper-2:#F7F5FC;      /* secciones alternas (papel lila) */
  --paper-3:#EFEAFB;      /* fills suaves */
  --line:#E5DFF3;         /* hairlines */
  --purple:#7C3AED;
  --purple-deep:#6D28D9;
  --purple-ink:#4C1D95;   /* púrpura legible en texto pequeño */
  --green:#15803D;
  --focus:#7C3AED;
  --radius:12px;
  --shadow:0 10px 30px -12px rgba(76,29,149,.18);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter','Segoe UI',Calibri,Arial,sans-serif;
  font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* superficies del navegador — también son diseño */
::selection{background:#E4D6FF;color:var(--purple-ink);}
:focus-visible{outline:2.5px solid var(--focus);outline-offset:3px;border-radius:6px;}
input,select,textarea,button{accent-color:var(--purple);caret-color:var(--purple);}
html{scrollbar-color:#C9B8F0 var(--paper-2);}
a{color:var(--purple-deep);text-decoration-thickness:1.5px;text-underline-offset:3px;}
a:hover{color:var(--purple);}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px;}
.narrow{max-width:880px;margin:0 auto;padding:0 24px;}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;gap:28px;height:64px;}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);margin-right:auto;}
.brand img{width:34px;height:34px;border-radius:8px;display:block;}
.brand b{font-size:15px;letter-spacing:.06em;font-weight:800;}
.nav a.lnk{font-size:14.5px;font-weight:600;color:var(--ink-2);text-decoration:none;}
.nav a.lnk:hover{color:var(--purple-deep);}
@media(max-width:760px){.nav a.lnk{display:none;}.nav a.lnk.keep{display:inline;}}

/* ---------- botones ---------- */
.btn{
  display:inline-block;border:none;cursor:pointer;text-decoration:none;text-align:center;
  font-family:inherit;font-weight:800;font-size:15.5px;
  padding:14px 26px;border-radius:12px;
  background:var(--purple);color:#fff;
  box-shadow:0 8px 20px -8px rgba(124,58,237,.45);
  transition:background .15s ease-out,transform .15s ease-out,box-shadow .15s ease-out;
}
.btn:hover{background:var(--purple-deep);transform:translateY(-1px);box-shadow:0 12px 24px -10px rgba(109,40,217,.5);}
.btn:active{transform:translateY(0);}
.btn.ghost{
  background:transparent;color:var(--purple-deep);
  border:1.5px solid #CDB9F2;box-shadow:none;
}
.btn.ghost:hover{background:var(--paper-3);border-color:var(--purple);transform:none;}
.btn.small{padding:10px 18px;font-size:14px;border-radius:10px;}

/* ---------- hero manifiesto ---------- */
.hero{padding:88px 0 30px;}
.hero-grid{position:relative;}
/* motivo de marca: módulos conectados (eco del isotipo, dibujado, no decorativo genérico) */
.hero-mark{
  position:absolute;right:0;top:6px;
  display:grid;grid-template-columns:repeat(3,58px);grid-auto-rows:58px;gap:12px;
}
.hero-mark i{border-radius:14px;display:block;}
.hero-mark .m1{grid-column:2;grid-row:1 / span 2;background:linear-gradient(160deg,#7C3AED,#9D5CFF);box-shadow:0 14px 28px -14px rgba(109,40,217,.55);}
.hero-mark .m2{grid-column:3;grid-row:1;background:var(--paper-3);}
.hero-mark .m3{grid-column:1;grid-row:2;border:2px solid #D8C8F6;}
.hero-mark .m4{grid-column:3;grid-row:2 / span 2;background:#E4D6FF;}
.hero-mark .m5{grid-column:2;grid-row:3;border:2px solid #D8C8F6;}
.hero-mark .m6{grid-column:1;grid-row:4;background:var(--paper-3);}
.hero-mark .m7{grid-column:2;grid-row:4;background:linear-gradient(160deg,#9D5CFF,#C4B5FD);}
@media(max-width:1060px){.hero-mark{display:none;}}
.hero h1{
  font-size:clamp(40px,6.4vw,76px);
  line-height:1.02;letter-spacing:-.028em;font-weight:800;
  max-width:17ch;
}
.hero h1 .quiet{color:var(--ink-soft);}
.hero .lede{
  margin-top:26px;max-width:56ch;
  font-size:clamp(17px,1.6vw,20px);color:var(--ink-2);line-height:1.55;
}
.hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;align-items:center;}
.hero .cta-note{font-size:13px;color:var(--ink-3);}
.certs{display:flex;gap:8px;flex-wrap:wrap;margin-top:44px;}
.cert{
  font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--purple-ink);background:var(--paper-3);
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;
}

/* revelado del hero — el único momento de motion autoral */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.16,1,.3,1) forwards;}
  .reveal.d1{animation-delay:.08s}.reveal.d2{animation-delay:.18s}
  .reveal.d3{animation-delay:.28s}.reveal.d4{animation-delay:.4s}
  @keyframes rise{to{opacity:1;transform:none;}}
}

/* ---------- manifiesto: declaraciones ---------- */
.manifesto{padding:64px 0 84px;}
.decl{
  border-top:1px solid var(--line);
  padding:34px 0;
  font-size:clamp(24px,3.4vw,40px);
  line-height:1.18;letter-spacing:-.022em;font-weight:700;
  max-width:24ch;
}
.decl em{font-style:normal;color:var(--purple-deep);}
.decl .src{display:block;margin-top:10px;font-size:13px;font-weight:500;letter-spacing:0;color:var(--ink-3);}
.decl.close{
  border-top:1px solid var(--line);color:var(--purple-deep);max-width:22ch;
}
.decl.close .who{display:block;margin-top:12px;font-size:15px;font-weight:600;color:var(--ink);letter-spacing:0;}

/* ---------- secciones ---------- */
section h2{
  font-size:clamp(28px,3.6vw,44px);letter-spacing:-.025em;line-height:1.08;font-weight:800;
  max-width:22ch;
}
section .sec-lede{margin-top:14px;color:var(--ink-2);max-width:60ch;font-size:17.5px;}
.band{padding:88px 0;}
.band.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- la ruta (etapas 1→4: la secuencia sí es información) ---------- */
.ruta{margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;}
.ruta::before{
  content:"";position:absolute;top:17px;left:4%;right:4%;height:2px;
  background:linear-gradient(90deg,#DCCEF8,var(--purple));
}
.etapa{padding:0 22px 0 0;position:relative;}
.etapa .dot{
  width:36px;height:36px;border-radius:10px;position:relative;z-index:1;
  background:var(--paper);border:2px solid #C9B2F1;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;color:var(--purple-deep);
}
.etapa.now .dot{background:var(--purple);border-color:var(--purple);color:#fff;box-shadow:0 8px 18px -8px rgba(124,58,237,.55);}
.etapa h3{margin-top:16px;font-size:19px;font-weight:800;letter-spacing:-.01em;}
.etapa p{margin-top:6px;font-size:14.5px;color:var(--ink-2);line-height:1.5;}
.etapa .tag{margin-top:10px;display:inline-block;font-size:11.5px;font-weight:700;color:var(--purple-ink);background:var(--paper-3);border-radius:7px;padding:3px 9px;}
@media(max-width:860px){
  .ruta{grid-template-columns:1fr;gap:26px;}
  .ruta::before{top:0;bottom:0;left:17px;right:auto;width:2px;height:auto;background:linear-gradient(180deg,#DCCEF8,var(--purple));}
  .etapa{padding-left:58px;}
  .etapa .dot{position:absolute;left:0;top:0;}
  .etapa h3{margin-top:2px;}
}

/* ---------- cómo trabajamos: 3 pasos (secuencia real) ---------- */
.pasos{margin-top:54px;display:grid;grid-template-columns:repeat(3,1fr);gap:38px;counter-reset:paso;}
.paso{border-top:2px solid var(--purple);padding-top:22px;position:relative;counter-increment:paso;}
.paso::before{
  content:"Paso " counter(paso);
  font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--purple-deep);
}
.paso h3{margin-top:10px;font-size:21px;font-weight:800;letter-spacing:-.015em;}
.paso p{margin-top:8px;font-size:15px;color:var(--ink-2);}
.paso .in{margin-top:12px;font-size:13.5px;color:var(--purple-ink);font-weight:600;}
@media(max-width:860px){.pasos{grid-template-columns:1fr;gap:30px;}}

/* ---------- soluciones: lista silenciosa, no cards ---------- */
.sol-list{margin-top:44px;border-top:1px solid var(--line);}
.sol{
  display:grid;grid-template-columns:270px 1fr;gap:18px;align-items:baseline;
  padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .15s ease-out;
}
.sol:hover{background:var(--paper-2);}
.sol b{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.sol span{font-size:15px;color:var(--ink-2);}
@media(max-width:700px){.sol{grid-template-columns:1fr;gap:4px;}}

/* ---------- prueba / por qué ---------- */
.proof{margin-top:50px;display:grid;grid-template-columns:1fr 1fr;gap:14px 44px;}
.pf{border-top:1px solid var(--line);padding:16px 0 4px;}
.pf b{font-size:16.5px;font-weight:800;}
.pf p{margin-top:5px;font-size:14.5px;color:var(--ink-2);}
@media(max-width:760px){.proof{grid-template-columns:1fr;}}

/* ---------- modo ia / newsletter ---------- */
.media-grid{margin-top:46px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start;}
@media(max-width:860px){.media-grid{grid-template-columns:1fr;}}
.nl{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.nl h3{font-size:20px;font-weight:800;letter-spacing:-.01em;}
.nl p{margin-top:6px;font-size:14.5px;color:var(--ink-2);}
.nl form{margin-top:16px;display:flex;gap:10px;}
.nl input{
  flex:1;min-width:0;font-family:inherit;font-size:15px;
  border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;background:var(--paper);color:var(--ink);
}
.nl input:focus{border-color:var(--purple);outline:none;}
.nl input::placeholder{color:var(--ink-3);}
.nl .ok{display:none;margin-top:12px;font-size:14px;color:var(--green);font-weight:600;}
@media(max-width:520px){.nl form{flex-direction:column;}}

/* ---------- cierre ---------- */
.final{
  background:linear-gradient(135deg,#6D28D9 0%,#7C3AED 100%);
  border-radius:20px;padding:clamp(36px,6vw,64px);
  color:#fff;
}
.final h2{color:#fff;max-width:20ch;}
.final p{margin-top:12px;color:#EFE7FF;max-width:52ch;font-size:17px;}
.final .cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.final .btn{background:#fff;color:var(--purple-deep);box-shadow:0 10px 24px -10px rgba(23,10,50,.5);}
.final .btn:hover{background:#F3EDFF;}
.final .btn.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.65);}
.final .btn.ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);margin-top:88px;background:var(--paper-2);}
.ft{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding:52px 0 40px;}
.ft h4{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:12px;}
.ft p,.ft a{font-size:14.5px;color:var(--ink-2);}
.ft a{display:block;text-decoration:none;margin-bottom:8px;}
.ft a:hover{color:var(--purple-deep);text-decoration:underline;}
.ft .brand{margin-bottom:14px;}
.legal{border-top:1px solid var(--line);padding:18px 0;font-size:12.5px;color:var(--ink-3);display:flex;gap:18px;flex-wrap:wrap;align-items:center;}
.legal .sp{margin-left:auto;}
@media(max-width:820px){.ft{grid-template-columns:1fr;gap:30px;}.legal .sp{margin-left:0;}}

/* ---------- página legal ---------- */
.legal-page{padding:72px 0 40px;max-width:760px;}
.legal-page h1{font-size:clamp(30px,4.5vw,44px);letter-spacing:-.025em;font-weight:800;}
.legal-page .updated{margin-top:10px;font-size:13.5px;color:var(--ink-3);}
.legal-page h2{font-size:21px;margin:36px 0 10px;letter-spacing:-.01em;}
.legal-page p,.legal-page li{font-size:15.5px;color:var(--ink-2);line-height:1.7;max-width:70ch;}
.legal-page p{margin-bottom:12px;}
.legal-page .updated{margin-bottom:28px;}
.legal-page ul{padding-left:22px;margin-top:8px;}
.legal-page h3{font-size:16px;margin:22px 0 6px;letter-spacing:-.005em;}
.legal-page li{margin-bottom:6px;}
.legal-page .callout{
  margin:18px 0;border:1px solid var(--line);border-left:3px solid var(--purple);
  border-radius:var(--radius);background:var(--paper-2);padding:18px 20px;
}
.legal-page .callout h3{margin-top:0;}
.legal-page .callout p:last-child{margin-bottom:0;}
.legal-page .badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}
.legal-page .badge-iso{
  font-size:12.5px;font-weight:600;color:var(--purple-ink);background:var(--paper-3);
  border:1px solid var(--line);border-radius:999px;padding:6px 12px;
}