/* BKUP Tech · paleta formal: azul marino, blanco, negro y gris */
:root{
  --navy-900:#071428; --navy-800:#0B1F3A; --navy-700:#12305A; --navy-600:#1B4478;
  --ink:#0B0F17; --gray-700:#374151; --gray-600:#4B5563; --gray-500:#6B7280;
  --gray-300:#D1D5DB; --gray-200:#E5E7EB; --gray-100:#F1F3F6; --gray-50:#F7F8FA; --white:#FFFFFF;
  --radius:10px; --radius-lg:14px;
  --shadow:0 1px 2px rgba(11,31,58,.06),0 10px 30px rgba(11,31,58,.07);
  --font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
::selection{background:var(--navy-800);color:#fff}
h1,h2,h3,h4{margin:0;color:var(--navy-900);line-height:1.12;letter-spacing:-.025em;text-wrap:balance}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--navy-600);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}

.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px;top:8px;background:var(--navy-800);color:#fff;padding:10px 14px;border-radius:6px;z-index:100}
.skip:focus{left:12px}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:8px;font-weight:600;font-size:15px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,color .15s,transform .15s;font-family:inherit;line-height:1.2}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--navy-800);color:#fff}
.btn-primary:hover{background:var(--navy-700)}
.btn-outline{border-color:var(--navy-800);color:var(--navy-800);background:transparent}
.btn-outline:hover{background:var(--navy-800);color:#fff}
.btn-ghost{color:var(--navy-800);padding-left:6px;padding-right:6px}
.btn-ghost:hover{text-decoration:underline;transform:none}
.btn-white{background:#fff;color:var(--navy-800)}
.btn-white:hover{background:var(--gray-100)}
.btn-line-inv{border-color:rgba(255,255,255,.5);color:#fff}
.btn-line-inv:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.site-header.is-scrolled{border-bottom-color:var(--gray-200);box-shadow:0 2px 14px rgba(11,31,58,.05)}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center}
.menu{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:500;color:var(--gray-700)}
.menu a{text-decoration:none}
.menu a:not(.btn):hover{color:var(--navy-800)}
.nav-toggle{display:none;background:none;border:0;padding:10px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--navy-800);margin:5px 0;border-radius:2px}
@media (max-width:900px){
  .nav-toggle{display:block}
  .menu{position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--gray-200);flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 18px;display:none;box-shadow:0 14px 24px rgba(11,31,58,.08)}
  .menu.is-open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--gray-100)}
  .menu .menu-cta{margin-top:12px;border:0;text-align:center}
}

/* Tipografía de sección */
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--navy-600);margin-bottom:14px}
.eyebrow-inv{color:#9FB6D6}
h2{font-size:clamp(28px,3.6vw,42px);font-weight:700;max-width:820px}
.sub{margin-top:14px;font-size:18px;color:var(--gray-600);max-width:720px}
.sub-inv{color:#C5D3E8}
.section{padding:88px 0}
.section-tight{padding:72px 0 64px}
.section-alt{background:var(--gray-50);border-top:1px solid var(--gray-200);border-bottom:1px solid var(--gray-200)}
.section-navy{background:var(--navy-800);color:#fff}
.section-navy h2,.section-navy h3{color:#fff}
@media (max-width:700px){.section{padding:64px 0}}

/* Hero */
.hero{padding:72px 0 80px;background:linear-gradient(180deg,#fff 0%,var(--gray-50) 100%);border-bottom:1px solid var(--gray-200)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(42px,6vw,68px);font-weight:800;letter-spacing:-.04em;line-height:1.04;margin:0 0 22px}
.h1-accent{color:var(--navy-600)}
.lead{font-size:clamp(17px,2vw,20px);color:var(--gray-600);max-width:620px;margin-bottom:30px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:34px}
.chips li{font-size:13px;color:var(--gray-600);border:1px solid var(--gray-300);background:#fff;padding:6px 12px;border-radius:999px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding:48px 0 56px}}

/* Tarjeta de ejemplo (mock) */
.mock{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden}
.mock-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--gray-200);background:var(--gray-50)}
.mock-title{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--navy-800)}
.tag-example{font-size:11px;font-weight:600;color:var(--gray-600);border:1px dashed var(--gray-300);padding:3px 8px;border-radius:999px;white-space:nowrap}
.feed li,.rows li{display:flex;align-items:center;gap:14px;padding:16px 18px;border-bottom:1px solid var(--gray-100)}
.feed li:last-child,.rows li:last-child{border-bottom:0}
.feed li>div,.rows li>div{flex:1;min-width:0}
.feed strong,.rows strong{display:block;font-size:15px;color:var(--ink);font-weight:600;line-height:1.35}
.feed div span,.rows div span{display:block;font-size:13px;color:var(--gray-500);line-height:1.4;margin-top:2px}
.badge-prod{flex:none;width:40px;height:40px;border-radius:11px;color:#fff;display:grid;place-items:center;background:linear-gradient(150deg,var(--navy-600) 0%,var(--navy-800) 52%,var(--navy-900) 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),inset 0 0 0 1px rgba(255,255,255,.06),0 4px 10px rgba(11,31,58,.22)}
.badge-prod svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.pill{flex:none;font-style:normal;font-size:12px;font-weight:600;padding:5px 10px;border-radius:999px;background:var(--gray-100);color:var(--gray-700);white-space:nowrap}
.pill-dark{background:var(--navy-800);color:#fff}
.pill-line{background:#fff;border:1px solid var(--gray-300)}
.mock-foot{padding:12px 18px;font-size:13px;color:var(--gray-500);background:var(--gray-50);border-top:1px solid var(--gray-200)}
.range{padding:16px 18px;border-top:1px solid var(--gray-200)}
.range-head{display:flex;justify-content:space-between;font-size:12px;color:var(--gray-500);margin-bottom:10px}
.range-bar{position:relative;height:8px;background:var(--gray-100);border-radius:999px}
.range-fill{position:absolute;left:12%;right:18%;top:0;bottom:0;background:var(--navy-700);border-radius:999px;opacity:.9}
.range-dot{position:absolute;top:50%;width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid var(--navy-900);transform:translate(-50%,-50%)}
.range-scale{display:flex;justify-content:space-between;font-size:12px;color:var(--gray-500);margin-top:10px}

/* Íconos */
.ico{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:13px;color:#fff;
  background:linear-gradient(150deg,var(--navy-600) 0%,var(--navy-800) 52%,var(--navy-900) 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.2),inset 0 0 0 1px rgba(255,255,255,.06),0 6px 16px rgba(11,31,58,.2)}
.ico svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.ico-lg{width:56px;height:56px;border-radius:15px}.ico-lg svg{width:28px;height:28px}
.ico-sm{width:42px;height:42px;border-radius:11px;margin-bottom:16px}.ico-sm svg{width:21px;height:21px}
.ico-xs{display:inline-grid;width:28px;height:28px;border-radius:8px;vertical-align:middle;margin-right:10px;box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 3px 8px rgba(11,31,58,.18)}.ico-xs svg{width:16px;height:16px;stroke-width:2}
.ico-inv{background:linear-gradient(150deg,rgba(255,255,255,.2),rgba(255,255,255,.06));box-shadow:inset 0 1px 0 rgba(255,255,255,.28),inset 0 0 0 1px rgba(255,255,255,.14)}

/* Valores */
.values{padding:44px 0;background:#fff;border-bottom:1px solid var(--gray-200)}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.value{display:flex;gap:18px;align-items:flex-start;padding:4px 32px}
.value:first-child{padding-left:0}
.value+.value{border-left:1px solid var(--gray-200)}
.value h3{font-size:19px;margin:2px 0 6px}
.value p{font-size:15px;color:var(--gray-600)}
@media (max-width:860px){.values-grid{grid-template-columns:1fr;gap:22px}.value,.value:first-child{padding:0}.value+.value{border-left:0;border-top:1px solid var(--gray-200);padding-top:22px}}

/* Qué es */
.about{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px}
.about>div{border-top:1px solid var(--gray-200);padding-top:22px}
.about h3{font-size:19px;margin-bottom:10px}
.about p{color:var(--gray-600);font-size:16px}
@media (max-width:860px){.about{grid-template-columns:1fr;gap:26px}}

/* Para quién (tabla) */
.who{margin-top:36px;border:1px solid var(--gray-200);border-radius:var(--radius-lg);background:#fff;overflow:hidden}
.who-row{display:grid;grid-template-columns:1.1fr 1.5fr .6fr;gap:20px;padding:20px 24px;border-bottom:1px solid var(--gray-100);align-items:center;font-size:15px;color:var(--gray-600)}
.who-row:last-child{border-bottom:0}
.who-head{background:var(--navy-800);color:#fff;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:14px 24px}
.who-role{font-weight:600;color:var(--ink)}
.who-link{font-weight:700;color:var(--navy-800);text-decoration:none;white-space:nowrap}
.who-link:hover{text-decoration:underline}
@media (max-width:800px){
  .who-head{display:none}
  .who-row{grid-template-columns:1fr;gap:6px;padding:18px 20px}
}

/* Tarjetas de producto */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.pcard{position:relative;overflow:hidden;display:flex;flex-direction:column;gap:12px;padding:30px 28px 28px;border:1px solid var(--gray-200);border-radius:var(--radius-lg);background:#fff;text-decoration:none;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.pcard::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,var(--navy-800),var(--navy-600))}
.pcard .ico-lg{margin-bottom:6px}
.pcard:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(11,31,58,.12)}
.pcard-tag{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--gray-500)}
.pcard h3{font-size:28px}
.pcard p{color:var(--gray-600);font-size:15.5px;flex:1}
.pcard-link{font-weight:700;color:var(--navy-800)}
@media (max-width:900px){.cards3{grid-template-columns:1fr}}

/* Bloques de producto */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-rev .split-copy{order:2}
.num{display:flex;align-items:center;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--navy-600);margin-bottom:14px}
.ticks{margin:22px 0 14px;display:grid;gap:10px}
.ticks li{position:relative;padding-left:28px;color:var(--gray-700);font-size:15.5px}
.ticks li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:var(--navy-800)}
.ticks li::after{content:"";position:absolute;left:5px;top:10px;width:5px;height:8px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg) scale(.85)}
.note{font-size:14px;color:var(--gray-500);border-left:1px solid var(--gray-300);padding-left:14px;margin:6px 0 18px}
.price-line{font-size:15px;color:var(--gray-600);margin-bottom:20px}
.price-line strong{color:var(--navy-900);font-size:17px}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:36px}.split-rev .split-copy{order:0}}

/* Detalle por producto: para quién y cómo funciona */
.detail{display:grid;grid-template-columns:1fr 1.4fr;gap:22px;margin-top:56px}
.detail-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:26px}
.detail-card h3{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--navy-600);margin-bottom:16px}
.who-list li{padding:9px 0;border-bottom:1px solid var(--gray-100);font-weight:500;color:var(--ink);font-size:15.5px}
.who-list li:last-child{border-bottom:0}
.mini-steps{display:grid;gap:14px;counter-reset:m}
.mini-steps li{display:flex;gap:14px;align-items:flex-start;font-size:15.5px;color:var(--gray-700)}
.mini-n{flex:none;width:28px;height:28px;border-radius:50%;background:var(--navy-800);color:#fff;font-weight:700;font-size:13px;display:grid;place-items:center;margin-top:1px}
@media (max-width:900px){.detail{grid-template-columns:1fr;margin-top:40px}}
.managed{margin-top:28px}
.managed p{padding:18px 22px;background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);color:var(--gray-700);font-size:15px}
.managed a{color:var(--navy-800);font-weight:700}

/* Cómo funciona (marino) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px}
.steps li{padding:24px;border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-lg);background:rgba(255,255,255,.04)}
.step-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.step-n{font-size:13px;font-weight:700;letter-spacing:.08em;color:#9FB6D6}
.steps h3{font-size:20px;margin-bottom:8px}
.steps p{color:#C5D3E8;font-size:15px}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* Planes */
.plans{align-items:stretch}
.plan{display:flex;flex-direction:column;gap:14px;padding:28px;border:1px solid var(--gray-200);border-radius:var(--radius-lg);background:#fff}
.plan-featured{border:2px solid var(--navy-800);box-shadow:var(--shadow)}
.plan h3{font-size:26px}
.plan-from{color:var(--gray-600);font-size:15px}
.plan-from strong{color:var(--navy-900);font-size:22px}
.plan ul{flex:1;margin:4px 0 8px}
.plan li{font-size:15px;color:var(--gray-700);padding:8px 0;border-bottom:1px solid var(--gray-100)}
.plan li:last-child{border-bottom:0}
.fine{margin-top:20px;font-size:13px;color:var(--gray-500)}

/* Confianza */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.trust>div{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:24px}
.trust .ico{width:44px;height:44px;border-radius:12px;margin-bottom:16px}.trust .ico svg{width:22px;height:22px}
.trust h3{font-size:18px;margin-bottom:8px}
.trust p{color:var(--gray-600);font-size:15px}
@media (max-width:980px){.trust{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.trust{grid-template-columns:1fr}}

/* FAQ */
.faq{margin-top:34px;border-top:1px solid var(--gray-200)}
.faq details{border-bottom:1px solid var(--gray-200)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;padding:20px 0;font-weight:600;font-size:17px;color:var(--navy-900)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:24px;font-weight:400;line-height:1;color:var(--navy-600);transition:transform .2s}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 22px;color:var(--gray-600);max-width:680px}

/* CTA */
.cta-section{padding-top:24px}
.cta{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;background:var(--navy-800);color:#fff;border-radius:18px;padding:44px 40px}
.cta h2{color:#fff;font-size:clamp(26px,3vw,36px)}
.cta p{color:#C5D3E8;margin-top:8px}

/* Footer */
.site-footer{background:var(--gray-50);border-top:1px solid var(--gray-200);padding:56px 0 28px;color:var(--gray-600);font-size:14.5px}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.foot-brand p{margin-top:14px;max-width:360px}
.ally{font-size:14px}
.ally a{color:var(--navy-800);font-weight:600}
.site-footer h4{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);margin-bottom:12px}
.site-footer .foot a:not(.ally a){display:block;text-decoration:none;padding:5px 0}
.site-footer .foot > div:not(.foot-brand) a:hover{color:var(--navy-800);text-decoration:underline}
.legal{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:40px;padding-top:20px;border-top:1px solid var(--gray-200);font-size:13px;color:var(--gray-500)}
@media (max-width:760px){.foot{grid-template-columns:1fr;gap:28px}}