:root{
  --ink:#0C2A44;--navy:#0F3A57;--abyss:#071828;--teal:#12667F;--aqua:#159FBA;--aqua-2:#1DB3CE;
  --glow:#7ED3E2;--steel:#5B8AA0;--mist:#E6F1F4;--mist-2:#D6E8EC;--paper:#F5FAFB;--line:#CFE0E5;
  --shadow:0 1px 2px rgba(12,42,68,.06),0 12px 34px -18px rgba(12,42,68,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Hanken Grotesk",system-ui,sans-serif;font-size:17.5px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:"Fraunces",Georgia,serif;font-weight:500;line-height:1.12;letter-spacing:-.01em;margin:0}
a{color:var(--teal)}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* language visibility */
body[data-lang="en"] .only-es{display:none!important}
body[data-lang="es"] .only-en{display:none!important}

/* header */
header{position:sticky;top:0;z-index:60;background:rgba(245,250,251,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:14px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);min-width:0}
.brand img{width:40px;height:auto;flex:none}
.brand b{font-family:"Fraunces",serif;font-weight:600;font-size:17px;letter-spacing:-.01em;line-height:1;white-space:nowrap}
.brand small{display:block;font-family:"IBM Plex Mono",monospace;font-size:9.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--steel);margin-top:3px}
.navtools{display:flex;align-items:center;gap:12px}
.backlink{text-decoration:none;font-size:14.5px;font-weight:600;color:var(--navy);display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.backlink:hover{color:var(--teal)}
.lang{display:inline-flex;font-family:"IBM Plex Mono",monospace;font-size:12px;font-weight:500;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.lang button{border:0;background:transparent;padding:7px 12px;cursor:pointer;color:var(--steel);font:inherit;letter-spacing:.06em}
.lang button.on{background:var(--navy);color:#fff}

/* article hero band */
.art-hero{background:radial-gradient(900px 420px at 80% -20%,#123B57 0%,transparent 60%),linear-gradient(160deg,var(--abyss) 0%,#0B2740 60%,var(--navy) 100%);color:#fff;padding:64px 0 54px;position:relative;overflow:hidden}
.art-hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,transparent 42%,rgba(255,255,255,.05) 50%,rgba(126,211,226,.09) 53%,transparent 62%);background-size:280% 100%;animation:sheen 9s ease-in-out infinite}
@keyframes sheen{0%{background-position:130% 0}60%,100%{background-position:-130% 0}}
.art-hero .tag{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--glow)}
.art-hero h1{font-size:clamp(28px,4.4vw,46px);margin-top:14px;max-width:20ch;color:#fff}
.byline{margin-top:20px;font-size:14px;color:#A9CDDB;display:flex;flex-wrap:wrap;gap:6px 18px}
.byline b{color:#fff;font-weight:600}

/* article body */
.art{max-width:760px;margin:0 auto;padding:52px 24px 20px}
.art p{color:#33586e;margin:0 0 20px}
.art h2{font-size:clamp(22px,2.8vw,29px);color:var(--ink);margin:44px 0 16px}
.art h3{font-size:19px;font-weight:600;margin:28px 0 10px;font-family:"Hanken Grotesk",sans-serif}
.art ul,.art ol{color:#33586e;margin:0 0 20px;padding-left:24px}
.art li{margin-bottom:9px}
.art li b{color:var(--navy)}
.lead{font-size:19.5px;color:#2c526a!important}

/* callouts */
.callout{background:var(--mist);border-left:4px solid var(--aqua);border-radius:12px;padding:18px 20px;margin:26px 0;color:#274e66}
.callout b{color:var(--navy)}
.callout p{margin:0}
.warn{background:#FDF1EF;border-left:4px solid #D96A5B;border-radius:12px;padding:18px 20px;margin:26px 0;color:#6B3730}
.warn b{color:#A33F33}
.warn p{margin:0 0 8px}.warn p:last-child{margin:0}
.warn ul{margin:8px 0 0;color:#6B3730}

/* CTA card */
.cta-card{background:linear-gradient(160deg,#0B2740,var(--navy));border:1px solid rgba(126,211,226,.3);border-radius:24px;padding:36px;color:#EAF4F7;margin:48px 0 20px;position:relative;overflow:hidden;box-shadow:0 30px 60px -30px rgba(7,24,40,.7)}
.cta-card::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.08) 50%,rgba(126,211,226,.12) 53%,transparent 63%);background-size:270% 100%;animation:sheen 7s ease-in-out infinite}
.cta-card h2{color:#fff;font-size:clamp(21px,3vw,27px);margin:0 0 10px}
.cta-card p{color:#B9D6E2;margin:0 0 22px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;position:relative}
.btn{display:inline-flex;align-items:center;gap:9px;justify-content:center;font-weight:600;font-size:15px;padding:13px 20px;border-radius:999px;border:1px solid transparent;cursor:pointer;text-decoration:none;line-height:1;white-space:nowrap;transition:transform .18s,box-shadow .18s,background .18s}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--aqua);color:#fff;box-shadow:0 10px 24px -10px rgba(21,159,186,.7)}
.btn-primary:hover{background:var(--aqua-2);transform:translateY(-2px)}
.btn-holo{position:relative;color:#fff;background:rgba(29,179,206,.14);border:1px solid rgba(126,211,226,.55);overflow:hidden}
.btn-holo:hover{background:rgba(29,179,206,.26);transform:translateY(-2px)}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:#59F2C4;box-shadow:0 0 0 0 rgba(89,242,196,.6);animation:pulse 2s infinite;flex:none}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(89,242,196,.55)}70%{box-shadow:0 0 0 9px rgba(89,242,196,0)}100%{box-shadow:0 0 0 0 rgba(89,242,196,0)}}

/* disclaimer + footer */
.disclaim{font-size:13px;color:var(--steel);border-top:1px solid var(--line);padding-top:18px;margin:34px 0 0}
footer{background:var(--ink);color:#b8ccd6;padding:34px 0;margin-top:56px;font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;justify-content:space-between}
footer a{color:#cfe0e7;text-decoration:none}
footer a:hover{color:#fff}

/* floating whatsapp */
.wafab{position:fixed;right:22px;bottom:22px;z-index:80;display:inline-flex;align-items:center;gap:10px;background:#25D366;color:#fff;text-decoration:none;font-weight:600;font-size:15px;padding:14px 18px;border-radius:999px;box-shadow:0 12px 30px -8px rgba(37,211,102,.6);transition:transform .2s}
.wafab:hover{transform:translateY(-2px) scale(1.02)}
.wafab svg{width:24px;height:24px;flex:none}

@media (max-width:640px){
  .brand small{display:none}
  .backlink span{display:none}
  .art{padding-top:38px}
  .cta-card{padding:26px}
}
@media (prefers-reduced-motion:reduce){
  .art-hero::after,.cta-card::after{animation:none;background:none}
  html{scroll-behavior:auto}
}