:root {
  --grafito: #0F172A;
  --naranja: #F97316;
  --blanco: #FAFAF7;
  --gris: #64748B;
  --gris-claro: #F1F5F9;
  --verde: #10B981;
  --rojo: #EF4444;
  --sans: "Space Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --nav-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body { margin: 0; font-family: var(--sans); color: var(--grafito); background: var(--blanco); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; letter-spacing: -.02em; max-width: 22ch; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 1em; }
.mono { font-family: var(--mono); }
.container { width: min(1180px, 100% - 32px); margin-inline: auto; }

/* Wordmark: la "I" de "IA" se monta sobre la "h" */
.wordmark { font-weight: 700; letter-spacing: -.04em; color: var(--grafito); white-space: nowrap; }
.wordmark .ia { color: var(--naranja); margin-left: -.12em; }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: .9rem 1.6rem; border-radius: 8px; font-weight: 600; border: 2px solid transparent; cursor: pointer; font: 600 1rem var(--sans); transition: transform .15s, background .15s, color .15s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--naranja); color: #fff; }
.btn-primary:hover { background: #EA580C; }
.btn-ghost { border-color: rgba(250,250,247,.4); color: var(--blanco); }
.btn-ghost:hover { border-color: var(--naranja); color: var(--naranja); }
.btn-sm { padding: .55rem 1.1rem; font-size: .9rem; }
:focus-visible { outline: 3px solid var(--naranja); outline-offset: 3px; }

/* 1. Nav */
.nav { position: sticky; top: 0; z-index: 100; height: var(--nav-h); background: rgba(250,250,247,.85); border-bottom: 1px solid transparent; transition: border-color .2s, backdrop-filter .2s, background .2s; }
.nav.scrolled { background: rgba(250,250,247,.75); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom-color: #E2E8F0; }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.logo { display: flex; align-items: center; gap: .75rem; font-size: 1.5rem; }
.logo-sep { width: 1px; height: 24px; background: var(--gris); opacity: .5; }
.logo-sub { font-size: .95rem; color: var(--gris); font-weight: 500; }
.menu { display: flex; align-items: center; gap: 2rem; font-weight: 500; }
.menu a:not(.btn):hover { color: var(--naranja); }
.burger { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.burger span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--grafito); transition: transform .2s, opacity .2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 2. Hero */
.hero { min-height: calc(100vh - var(--nav-h)); min-height: calc(100svh - var(--nav-h)); display: flex; align-items: center; background: var(--grafito); color: var(--blanco); border-left: 10px solid var(--naranja); padding: 4rem 0; }
.eyebrow { color: var(--naranja); font-size: .85rem; letter-spacing: .05em; margin-bottom: 1rem; }
.hero-mark { color: var(--blanco); font-size: clamp(4.5rem, 15vw, 180px); line-height: .95; margin: 0 0 1.5rem; }
.hero-tagline { font-size: clamp(1.3rem, 3vw, 2rem); font-weight: 500; max-width: 28ch; line-height: 1.3; }
.hero-sub { color: #94A3B8; font-size: clamp(.8rem, 1.6vw, .95rem); margin-bottom: 2.5rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 1rem; }

/* 3. Trust bar */
.trust { background: var(--grafito); border-top: 1px solid #1E293B; padding: 2rem 0; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.cred { border: 1px solid var(--naranja); border-radius: 8px; padding: 1rem 1.2rem; color: var(--blanco); font-weight: 500; font-size: .95rem; }
.cred .mono { display: block; color: var(--naranja); font-size: .72rem; letter-spacing: .08em; margin-bottom: .25rem; }

/* Secciones */
.section { padding: 6rem 0; }
.section-light { background: var(--gris-claro); }
.section-dark { background: var(--grafito); color: var(--blanco); }

/* 4. Servicios */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 3rem; }
.card { background: #fff; border: 1px solid #E2E8F0; border-radius: 12px; padding: 2rem; transition: border-color .2s, box-shadow .2s, transform .2s; }
.card:hover { border-color: var(--naranja); box-shadow: 0 12px 30px -12px rgba(15,23,42,.18); transform: translateY(-4px); }
.card p { color: var(--gris); }
.card ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.card li { font: .75rem var(--mono); background: var(--gris-claro); padding: .25rem .6rem; border-radius: 4px; }
.icon { width: 40px; height: 40px; fill: none; stroke: var(--naranja); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 1.25rem; }

/* 5. Método */
.steps { list-style: none; padding: 0; margin: 3.5rem 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; position: relative; }
.steps::before { content: ""; position: absolute; top: 36px; left: 12.5%; right: 12.5%; border-top: 2px dashed var(--naranja); opacity: .6; }
.step { text-align: center; position: relative; }
.step-num { width: 72px; height: 72px; margin: 0 auto 1.25rem; border-radius: 50%; background: var(--naranja); color: #fff; display: grid; place-items: center; font-size: 1.2rem; font-weight: 500; box-shadow: 0 0 0 8px var(--gris-claro); position: relative; }
.step p { color: var(--gris); max-width: 26ch; margin-inline: auto; }

/* 6. Razones */
.reasons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.reason { border-left: 4px solid var(--naranja); padding: .5rem 0 .5rem 1.5rem; }
/* Credenciales: un panel por área; cada fila con insignia, logo o siglas */
.acred-head { margin-top: 5rem; max-width: 60ch; }
.acred-head h3 { font-size: 1.5rem; }
.acred-areas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2rem; }
.acred-area { background: #fff; border: 1px solid #E2E8F0; border-top: 3px solid var(--naranja); border-radius: 8px; padding: 1.5rem; }
.acred-area-title { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--naranja); margin-bottom: .75rem; }
.acred-list { list-style: none; margin: 0; padding: 0; }
.acred-item { display: flex; align-items: center; gap: .9rem; padding: .8rem 0; border-top: 1px solid var(--gris-claro); }
.acred-item:first-child { border-top: 0; }
.acred-mark { width: 44px; height: 44px; flex: none; display: grid; place-items: center; border-radius: 8px; background: var(--gris-claro); color: var(--grafito); font-size: .68rem; font-weight: 600; letter-spacing: .04em; }
.acred-mark img { width: 44px; height: 44px; object-fit: contain; }
.acred-mark.logo img { width: 24px; height: 24px; }
.acred-name { margin: 0; font-weight: 500; font-size: .93rem; line-height: 1.3; }
.acred-org { margin: .2rem 0 0; font-size: .8rem; line-height: 1.35; color: var(--gris); }
.reason-num { display: block; color: var(--naranja); font-size: 2rem; font-weight: 500; margin-bottom: .5rem; }
.reason p { color: var(--gris); }

/* 7. Sectores */
.sectors { list-style: none; padding: 0; margin: 3rem 0 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.5rem; }
.sector { aspect-ratio: 1; border: 2px solid var(--naranja); border-radius: 50%; display: grid; place-items: center; text-align: center; font-weight: 600; font-size: .95rem; padding: .5rem; transition: background .2s, color .2s; }
.sector:hover { background: var(--naranja); color: #fff; }

/* 8. Contacto */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.lead { color: var(--gris); font-size: 1.15rem; margin-bottom: 2rem; }
.contact-card { display: flex; align-items: center; gap: 1rem; background: #fff; border: 1px solid #E2E8F0; border-radius: 12px; padding: 1.1rem 1.4rem; margin-bottom: 1rem; transition: border-color .2s; }
.contact-card:hover { border-color: var(--naranja); }
.contact-card .icon { margin: 0; width: 32px; height: 32px; flex-shrink: 0; }
.contact-card strong { display: block; }
.contact-card .mono { font-size: .9rem; color: var(--gris); word-break: break-all; }
.form { background: #fff; border-radius: 12px; padding: 2rem; border: 1px solid #E2E8F0; display: grid; gap: 1.1rem; }
.form label { display: grid; gap: .4rem; font-weight: 500; font-size: .92rem; }
.form input, .form textarea { font: 1rem var(--sans); padding: .8rem 1rem; border: 1px solid #CBD5E1; border-radius: 8px; background: var(--blanco); color: var(--grafito); resize: vertical; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--naranja); box-shadow: 0 0 0 3px rgba(249,115,22,.2); }

/* 9. Footer */
.footer { background: var(--grafito); color: #CBD5E1; padding: 4rem 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
.footer-mark { color: var(--blanco); font-size: 2rem; display: inline-block; margin-bottom: .75rem; }
.footer h4 { color: var(--blanco); font-size: .95rem; margin-bottom: 1rem; }
.footer-grid a, .footer-grid .mono { display: block; margin-bottom: .5rem; font-size: .92rem; }
.footer-grid .mono { font-size: .8rem; color: var(--gris); }
.footer-grid a:hover { color: var(--naranja); }
.footer-bottom { border-top: 1px solid #1E293B; margin-top: 3rem; padding-top: 2rem; text-align: center; }
.manifesto { color: var(--blanco); font-size: 1.15rem; font-weight: 500; }
.copy { font-size: .78rem; color: var(--gris); margin: 0; }

/* Páginas internas */
.menu a[aria-current="page"] { color: var(--naranja); }
.page-hero { background: var(--grafito); color: var(--blanco); border-left: 10px solid var(--naranja); padding: 5rem 0 4rem; }
.page-hero h1 { font-size: clamp(2.6rem, 7vw, 4.5rem); letter-spacing: -.03em; margin-bottom: 1rem; }
.page-lead { color: #CBD5E1; font-size: clamp(1.05rem, 2vw, 1.3rem); max-width: 60ch; margin: 0; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.chips li { font: .75rem var(--mono); background: var(--gris-claro); padding: .25rem .6rem; border-radius: 4px; }
.svc-label { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--naranja); margin: 1.5rem 0 .5rem; }
.svc-label:first-child { margin-top: 0; }
.link-arrow { display: inline-block; margin-top: 1.25rem; color: var(--naranja); font-weight: 600; }
.link-arrow:hover { text-decoration: underline; }
.link-muted { color: var(--gris); font-size: .92rem; }
.link-muted:hover { color: var(--grafito); }

/* Servicios */
.svc-list { display: grid; gap: 1.5rem; }
.svc { display: grid; grid-template-columns: 1fr 1.6fr; gap: 3rem; background: #fff; border: 1px solid #E2E8F0; border-left: 4px solid var(--naranja); border-radius: 12px; padding: 2.5rem; scroll-margin-top: calc(var(--nav-h) + 16px); }
.svc-head h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 1rem; }
.svc-body p { color: var(--gris); }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.checks li { padding-left: 1.6rem; position: relative; }
.checks li::before { content: ""; position: absolute; left: 0; top: .45em; width: .85rem; height: .45rem; border-left: 2px solid var(--verde); border-bottom: 2px solid var(--verde); transform: rotate(-45deg); }

/* Portafolio */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.case { background: #fff; border: 1px solid #E2E8F0; border-radius: 12px; padding: 2rem; scroll-margin-top: calc(var(--nav-h) + 16px); transition: border-color .2s; }
.case:hover, .case:target { border-color: var(--naranja); }
.case h2 { font-size: 1.35rem; max-width: none; }
.case p { color: var(--gris); }
.case .chips { margin-top: 1.25rem; }
.case-sector { color: var(--naranja); font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: .5rem; }

/* Hub */
.hub-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.hub-card { display: flex; flex-direction: column; }
.hub-card p { flex: 1; }
.badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.badge { font: 500 .7rem var(--mono); letter-spacing: .04em; padding: .25rem .6rem; border-radius: 999px; border: 1px solid; }
.badge-public { color: #047857; border-color: var(--verde); background: #ECFDF5; }
.badge-private { color: #C2410C; border-color: var(--naranja); background: #FFF7ED; }
.badge-soon { color: var(--gris); border-color: #CBD5E1; background: var(--gris-claro); }
.hub-links { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* Franja de llamada a la acción */
.cta-band { background: var(--grafito); color: var(--blanco); padding: 4rem 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.cta-band h2 { margin-bottom: .4rem; }
.cta-band p { color: #CBD5E1; margin: 0; }

/* Fade-in */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* Tablet 640–900 */
@media (max-width: 900px) {
  .burger { display: block; }
  .menu { position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--blanco); border-bottom: 1px solid #E2E8F0; padding: .5rem 16px 1.25rem; display: none; }
  .menu.open { display: flex; }
  .menu a:not(.btn) { padding: .9rem 0; border-bottom: 1px solid var(--gris-claro); }
  .menu .btn { margin-top: 1rem; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 3rem; }
  .steps::before { display: none; }
  .reasons { grid-template-columns: 1fr; }
  .acred-areas { grid-template-columns: 1fr; }
  .sectors { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .svc { grid-template-columns: 1fr; gap: 1.5rem; }
  .case-grid { grid-template-columns: 1fr; }
  .hub-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Mobile <640 */
@media (max-width: 639px) {
  .section { padding: 4rem 0; }
  .hero { border-left-width: 6px; }
  .hero-ctas .btn, .form .btn { width: 100%; }
  .trust-grid, .services-grid, .steps { grid-template-columns: 1fr; }
  .sectors { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-sep, .logo-sub { display: none; }
  .card, .form, .case, .svc { padding: 1.5rem; }
  .hub-grid { grid-template-columns: 1fr; }
  .page-hero { border-left-width: 6px; padding: 3.5rem 0 3rem; }
  .cta-inner .btn { width: 100%; }
}