:root{
  --bg:#F3F5F8; --surface:#FFFFFF; --ink:#111A2B; --ink-2:#3E4A5C; --ink-3:#6B778A;
  --line:#D6DCE5; --accent:#0E8C7F; --accent-ink:#0A6B61; --accent-soft:#DDF1EE;
  --signal:#E39B12; --strata-1:#111A2B; --strata-2:#2B3A52; --strata-3:#4C5F7C; --strata-4:#8194AE;
  --on-accent:#FFFFFF; --shadow:0 12px 32px rgba(17,26,43,.08);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0C121C; --surface:#131B28; --ink:#EEF2F7; --ink-2:#B9C3D1; --ink-3:#8593A6;
    --line:#26324A; --accent:#3BBFAF; --accent-ink:#5ED4C5; --accent-soft:#12302E;
    --signal:#F2B13C; --strata-1:#EEF2F7; --strata-2:#AAB8CC; --strata-3:#6F819C; --strata-4:#3E4E68;
    --on-accent:#0C121C; --shadow:0 12px 32px rgba(0,0,0,.35);
  }
}
:root[data-theme="dark"]{
  --bg:#0C121C; --surface:#131B28; --ink:#EEF2F7; --ink-2:#B9C3D1; --ink-3:#8593A6;
  --line:#26324A; --accent:#3BBFAF; --accent-ink:#5ED4C5; --accent-soft:#12302E;
  --signal:#F2B13C; --strata-1:#EEF2F7; --strata-2:#AAB8CC; --strata-3:#6F819C; --strata-4:#3E4E68;
  --on-accent:#0C121C; --shadow:0 12px 32px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 "IBM Plex Sans",system-ui,-apple-system,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Sora",system-ui,sans-serif;text-wrap:balance;margin:0;line-height:1.12;letter-spacing:-.015em}
h1{font-size:clamp(2.4rem,5.2vw,4.2rem);font-weight:700}
h2{font-size:clamp(1.7rem,3vw,2.4rem);font-weight:600}
h3{font-size:1.15rem;font-weight:600}
p{margin:0}
a{color:inherit}
.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums}
.eyebrow{font:500 .78rem/1 "IBM Plex Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink)}
.wrap{max-width:1160px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
section{padding:clamp(72px,9vw,120px) 0}
.sec-head{display:grid;gap:14px;max-width:640px;margin-bottom:48px}
.sec-head p{color:var(--ink-2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* nav */
header{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font:600 1.1rem "Sora",sans-serif;text-decoration:none;letter-spacing:-.01em}
.logo svg{width:28px;height:28px}
header nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0}
header nav ul a{text-decoration:none;font-size:.95rem;color:var(--ink-2)}
header nav ul a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:6px;font:500 .95rem "IBM Plex Sans",sans-serif;text-decoration:none;border:1px solid transparent;transition:transform .15s,background .15s}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent-ink);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink-3)}
@media (max-width:760px){header nav ul{display:none}}

/* hero */
.hero{padding:clamp(48px,6vw,80px) 0 0;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:end}
.hero-copy{display:grid;gap:26px;padding-bottom:64px}
.hero-copy .lede{font-size:1.2rem;color:var(--ink-2);max-width:34em}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-note{display:flex;gap:18px;flex-wrap:wrap;color:var(--ink-3);font-size:.85rem}
.strata{width:100%;height:auto;display:block}
.strata .l1{fill:var(--strata-1)} .strata .l2{fill:var(--strata-2)} .strata .l3{fill:var(--strata-3)} .strata .l4{fill:var(--strata-4)}
.strata text{font:500 11px "IBM Plex Mono",monospace;fill:var(--bg);letter-spacing:.1em}
.strata .beacon{fill:var(--accent)}
@keyframes rise{from{transform:translateY(14px)}to{transform:translateY(0)}}
.strata g.layer{animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.strata g.layer:nth-child(2){animation-delay:.08s}.strata g.layer:nth-child(3){animation-delay:.16s}.strata g.layer:nth-child(4){animation-delay:.24s}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-copy{padding-bottom:24px}}

/* trust bar */
.bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}
.bar .wrap{display:flex;gap:32px;flex-wrap:wrap;justify-content:space-between;font-size:.88rem;color:var(--ink-3)}
.bar b{color:var(--ink);font-weight:600}

/* services */
.services{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{background:var(--surface);padding:36px 32px;display:grid;gap:14px;align-content:start}
.svc .tag{font:500 .75rem "IBM Plex Mono",monospace;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase}
.svc p{color:var(--ink-2)}
.svc ul{margin:6px 0 0;padding:0;list-style:none;display:grid;gap:8px;font-size:.93rem;color:var(--ink-2)}
.svc li{padding-left:18px;position:relative}
.svc li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--accent)}
@media (max-width:760px){.services{grid-template-columns:1fr}}

/* método */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;counter-reset:step}
.step{display:grid;gap:12px;padding-top:18px;border-top:2px solid var(--line);position:relative}
.step::before{counter-increment:step;content:"Fase " counter(step);font:500 .75rem "IBM Plex Mono",monospace;letter-spacing:.1em;color:var(--accent-ink);text-transform:uppercase}
.step .dur{font:400 .8rem "IBM Plex Mono",monospace;color:var(--ink-3)}
.step p{color:var(--ink-2);font-size:.95rem}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* resultados */
.results{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.kpi{display:grid;gap:8px;padding-left:20px;border-left:3px solid var(--accent)}
.kpi .num{font:600 clamp(2.2rem,4vw,3rem)/1 "Sora",sans-serif;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.kpi .lbl{color:var(--ink-2)}
.kpi .ctx{font-size:.85rem;color:var(--ink-3)}
.disclaimer{margin-top:28px;font-size:.82rem;color:var(--ink-3)}
@media (max-width:760px){.kpis{grid-template-columns:1fr}}

/* stack */
.stack{display:flex;flex-wrap:wrap;gap:10px}
.chip{font:500 .82rem "IBM Plex Mono",monospace;padding:7px 12px;border:1px solid var(--line);border-radius:999px;color:var(--ink-2);background:var(--surface)}

/* about */
.about-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.about-grid p{color:var(--ink-2)}
.about-grid .prose{display:grid;gap:16px;max-width:36em}
.principles{display:grid;gap:22px}
.principles div{display:grid;gap:4px;padding-left:16px;border-left:2px solid var(--line)}
.principles b{font-weight:600}
.principles span{font-size:.93rem;color:var(--ink-2)}
@media (max-width:820px){.about-grid{grid-template-columns:1fr}}

/* contact */
.contact{background:var(--ink);color:var(--bg)}
.contact .eyebrow{color:var(--accent)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px}
.contact p{opacity:.8}
.contact form{display:grid;gap:14px}
.contact label{display:grid;gap:6px;font-size:.88rem;opacity:.9}
.contact input,.contact select,.contact textarea{font:inherit;font-size:.95rem;padding:12px 14px;border-radius:6px;border:1px solid color-mix(in srgb,var(--bg) 25%,transparent);background:color-mix(in srgb,var(--bg) 8%,transparent);color:var(--bg)}
.contact input::placeholder,.contact textarea::placeholder{color:color-mix(in srgb,var(--bg) 45%,transparent)}
.contact .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact .btn-primary{justify-self:start;margin-top:6px}
.contact .alt{margin-top:28px;display:grid;gap:8px;font-size:.93rem}
.contact .alt a{color:var(--accent)}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}.contact .row{grid-template-columns:1fr}}

footer{padding:24px 0 32px;font-size:.85rem;color:var(--ink-3)}


/* shared additions for subpages */
.more{font:500 .9rem "IBM Plex Sans",sans-serif;color:var(--accent-ink);text-decoration:none;margin-top:4px}
.more:hover{text-decoration:underline}
.nav-current{color:var(--ink)!important;font-weight:500}
.subhero{padding:clamp(32px,4vw,56px) 0 clamp(48px,6vw,80px);border-bottom:1px solid var(--line)}
.subhero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.subhero .hero-copy{padding-bottom:0}
.diagram{width:100%;height:auto;display:block}
.diagram text{font:500 11px "IBM Plex Mono",monospace;letter-spacing:.08em}
.diagram .box{fill:var(--surface);stroke:var(--line);stroke-width:1.5}
.diagram .box-ink{fill:var(--ink)}
.diagram .t{fill:var(--ink)} .diagram .t-inv{fill:var(--bg)} .diagram .t-muted{fill:var(--ink-3)}
.diagram .sub{font-size:9.5px;letter-spacing:.03em}
.diagram .flow{stroke:var(--accent);stroke-width:2;fill:none;marker-end:url(#arr)}
.diagram .flow-muted{stroke:var(--ink-3);stroke-width:1.5;fill:none;stroke-dasharray:4 4}
.diagram .accent{fill:var(--accent)} .diagram .signal{fill:var(--signal)}
@media (max-width:860px){.subhero-grid{grid-template-columns:1fr}}
.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 56px}
.two-col .block{display:grid;gap:10px;align-content:start}
.two-col .block p{color:var(--ink-2)}
@media (max-width:760px){.two-col{grid-template-columns:1fr}}
.table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:.93rem}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font:500 .75rem "IBM Plex Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
tr:last-child td{border-bottom:0}
td.mono{white-space:nowrap}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font:500 .74rem "IBM Plex Mono",monospace;letter-spacing:.06em}
.pill-crit{background:#F6DCDC;color:#8A1C1C} .pill-high{background:#FBE9CF;color:#7A4A05} .pill-med{background:var(--accent-soft);color:var(--accent-ink)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .pill-crit{background:#3A1717;color:#F3A3A3} :root:not([data-theme="light"]) .pill-high{background:#3B2A0E;color:#F2C36B}}
:root[data-theme="dark"] .pill-crit{background:#3A1717;color:#F3A3A3} :root[data-theme="dark"] .pill-high{background:#3B2A0E;color:#F2C36B}
.faq{display:grid;gap:0;border-top:1px solid var(--line);max-width:760px}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font:600 1.05rem "Sora",sans-serif;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent-ink);font-weight:500}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:12px;color:var(--ink-2);max-width:62ch}
.cta-band{background:var(--accent-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:48px 0}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h3{font-size:1.35rem}
.cta-band p{color:var(--ink-2);margin-top:4px}

/* service lines index */
.lines{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.line{background:var(--surface);padding:36px 32px;display:grid;gap:14px;align-content:start;text-decoration:none;color:inherit;transition:background .15s}
.line:hover{background:var(--accent-soft)}
.line .tag{font:500 .75rem "IBM Plex Mono",monospace;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase}
.line p{color:var(--ink-2)}
.line ul{margin:6px 0 0;padding:0;list-style:none;display:grid;gap:8px;font-size:.93rem;color:var(--ink-2)}
.line li{padding-left:18px;position:relative}
.line li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;background:var(--accent)}
.line .more{margin-top:auto;padding-top:8px}
.line-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:6px;background:var(--ink);color:var(--bg)}
.line-mark svg{width:24px;height:24px;fill:currentColor}
.results a{color:var(--accent-ink);text-decoration:none;font-weight:500}
.results a:hover{text-decoration:underline}
footer a{color:inherit;text-decoration:none}
footer a:hover{color:var(--ink)}
@media (max-width:900px){.lines{grid-template-columns:1fr}}

/* nav: botones de acceso (el login vive en la SPA, /app/login) */
.nav-actions{display:flex;gap:10px;align-items:center}
@media (max-width:560px){.nav-actions .btn-primary{display:none}}

/* SEO / accesibilidad: skip link, migas de pan y pie con enlaces */
.skip{position:absolute;left:-999px;top:12px;z-index:20;padding:10px 14px;background:var(--accent);color:var(--on-accent);border-radius:6px;text-decoration:none;font-weight:500}
.skip:focus{left:16px}
.crumbs{display:flex;gap:8px;align-items:center;font-size:.85rem;color:var(--ink-3)}
.crumbs a{text-decoration:none;color:var(--ink-2)}
.crumbs a:hover{color:var(--ink)}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,1fr));gap:32px;padding-top:40px;padding-bottom:32px;border-top:1px solid var(--line)}
.footer-grid nav,.footer-brand{display:grid;gap:8px;align-content:start}
.footer-grid b{color:var(--ink);font-weight:600;margin-bottom:4px}
.footer-brand span{max-width:34em;color:var(--ink-2)}
.footer-legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:16px;padding-bottom:8px;border-top:1px solid var(--line)}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr;gap:24px}}
.lang{font:500 .82rem "IBM Plex Mono",monospace;letter-spacing:.08em;text-decoration:none;color:var(--ink-2);padding:8px 10px;border-radius:6px}
.lang:hover{color:var(--ink);background:var(--accent-soft)}