:root{
  --navy-950:#050B18;
  --navy-900:#0A1730;
  --navy-800:#0F2247;
  --navy-700:#153161;
  --navy-600:#1C4080;
  --blue-600:#1C4080;
  --blue-500:#2E6BFF;
  --blue-400:#5B8CFF;
  --ice-400:#7FB2FF;
  --ink:#0A1220;
  --slate-600:#4A5876;
  --slate-500:#5F6E8C;
  --paper:#F4F7FC;
  --paper-2:#FFFFFF;
  --line:#E2E8F5;
  --line-dark:rgba(255,255,255,.08);
  --shadow-soft:0 20px 50px -25px rgba(10,23,48,.35);
  --shadow-card:0 10px 30px -12px rgba(10,23,48,.18);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',sans-serif;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Sora',sans-serif;margin:0;color:var(--navy-900);}
p{margin:0;line-height:1.6;}
a{color:inherit;text-decoration:none;}
.mono{font-family:'JetBrains Mono',monospace;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
img,svg{display:block;}
button{font-family:inherit;cursor:pointer;}

/* ============ ANNOUNCE ============ */
.announce{
  background:var(--navy-950);
  color:#CBD8FF;
  text-align:center;
  font-size:13px;
  font-family:'JetBrains Mono',monospace;
  letter-spacing:.02em;
  padding:9px 16px;
  border-bottom:1px solid var(--line-dark);
}
.announce a{color:var(--ice-400);margin-left:8px;font-weight:600;}
.announce a:hover{text-decoration:underline;}

/* ============ HEADER — fondo blanco, igual al resto del sitio ============ */
header{
  position:sticky;top:0;z-index:100;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px -6px rgba(10,23,48,.06);
}
nav{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:76px;display:flex;align-items:center;justify-content:space-between;
}
.logo{display:flex;align-items:center;gap:10px;}
.logo img{height:38px;width:auto;display:block;}
.navlinks{list-style:none;display:flex;align-items:center;gap:26px;margin:0;padding:0;}
.navlinks > li{position:relative;}
.navlinks a, .navlinks button{
  color:#1A2540;font-size:14.5px;font-weight:600;background:none;border:none;
  display:flex;align-items:center;gap:5px;transition:color .2s;
  font-family:'Inter',sans-serif;
}
.navlinks a:hover, .navlinks button:hover, .navlinks a.active{color:var(--blue-500);}
.caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg);margin-top:-3px;}
.dropdown{
  position:absolute;top:40px;left:-14px;background:#FFFFFF;
  border:1px solid var(--line);border-radius:12px;padding:8px;
  min-width:210px;box-shadow:0 20px 45px -20px rgba(10,23,48,.25);
  opacity:0;visibility:hidden;transform:translateY(6px);transition:.2s;
}
.navlinks > li:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown a{padding:10px 12px;border-radius:8px;font-size:13.5px;font-weight:500;color:var(--slate-600);}
.dropdown a:hover{background:var(--paper);color:var(--blue-500);}
.navlinks a.nav-cta{
  background:linear-gradient(135deg,var(--blue-500),var(--blue-400));
  color:#fff !important;padding:11px 22px;border-radius:99px;font-weight:700;
  box-shadow:0 8px 20px -8px rgba(46,107,255,.45);
}
.navlinks a.nav-cta:hover{filter:brightness(1.06);}
.nav-toggle{display:none;background:none;border:none;color:#1A2540;font-size:22px;}

/* ============ HERO with network canvas ============ */
.blog-hero{
  position:relative;overflow:hidden;
  background:radial-gradient(ellipse 120% 100% at 50% -10%, var(--navy-800) 0%, var(--navy-950) 60%);
  padding:88px 0 56px;
  color:#fff;
}
.blog-hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;}
.blog-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%, var(--navy-950) 100%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:760px;}
.breadcrumb{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:#7C8DBE;margin-bottom:22px;}
.breadcrumb a{color:#7C8DBE;}
.breadcrumb a:hover{color:var(--ice-400);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:'JetBrains Mono',monospace;font-size:12.5px;letter-spacing:.06em;
  color:var(--ice-400);text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ice-400);box-shadow:0 0 0 4px rgba(127,178,255,.22);animation:pulse-dot 2s infinite;}
@keyframes pulse-dot{0%,100%{box-shadow:0 0 0 4px rgba(127,178,255,.22);}50%{box-shadow:0 0 0 8px rgba(127,178,255,.06);}}
.blog-hero h1{font-size:clamp(34px,5vw,52px);line-height:1.08;letter-spacing:-.02em;color:#fff;margin-bottom:18px;}
.blog-hero h1 span{
  background:linear-gradient(90deg,var(--ice-400),var(--blue-500));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.blog-hero .lead{font-size:17px;color:#AAB9DE;max-width:560px;margin-bottom:30px;}
.hero-readout{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'JetBrains Mono',monospace;font-size:12.5px;color:#8FA3D6;
  background:rgba(255,255,255,.04);border:1px solid var(--line-dark);
  padding:9px 16px;border-radius:99px;
}
.hero-readout .cursor{width:7px;height:14px;background:var(--ice-400);display:inline-block;animation:blink 1s steps(1) infinite;}
@keyframes blink{50%{opacity:0;}}

/* ============ FILTER PILLS ============ */
.filters{
  position:relative;z-index:3;
  display:flex;gap:10px;flex-wrap:wrap;margin-top:34px;
}
.filter-pill{
  font-family:'JetBrains Mono',monospace;font-size:12.5px;font-weight:500;
  color:#B9C6E6;background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);padding:9px 16px;border-radius:99px;
  transition:.2s;white-space:nowrap;
}
.filter-pill:hover{border-color:rgba(91,140,255,.5);color:#fff;}
.filter-pill.active{
  background:linear-gradient(135deg,var(--blue-500),var(--blue-600));
  color:#fff;border-color:transparent;box-shadow:0 6px 18px -8px rgba(46,107,255,.7);
}

/* ============ FEATURED POST ============ */
.featured-wrap{padding:56px 0 8px;}
.section-label{
  font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--blue-500);margin-bottom:14px;
  display:flex;align-items:center;gap:10px;
}
.section-label::after{content:"";flex:1;height:1px;background:var(--line);}
.featured-card{
  display:grid;grid-template-columns:1.1fr 1fr;gap:0;
  background:var(--paper-2);border-radius:24px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .35s ease, box-shadow .35s ease;
}
.featured-card:hover{transform:translateY(-4px);box-shadow:0 30px 60px -20px rgba(10,23,48,.28);}
.featured-visual{
  position:relative;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  min-height:340px;overflow:hidden;
}
.featured-visual .grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(91,140,255,.12) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(91,140,255,.12) 1px, transparent 1px);
  background-size:34px 34px;
  mask-image:radial-gradient(circle at 30% 30%, #000 0%, transparent 75%);
}
.thumb-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;}
.featured-visual .thumb-fade{
  position:absolute;inset:0;z-index:2;
  background:linear-gradient(0deg, rgba(5,11,24,.55) 0%, transparent 55%);
}
.featured-tagchip{
  position:absolute;top:24px;left:24px;z-index:3;
}
.featured-body{padding:44px;display:flex;flex-direction:column;justify-content:center;}
.tag{
  display:inline-block;font-family:'JetBrains Mono',monospace;font-size:11.5px;
  font-weight:600;letter-spacing:.03em;text-transform:uppercase;
  padding:5px 12px;border-radius:99px;margin-bottom:16px;width:fit-content;
  backdrop-filter:blur(6px);
}
.tag-a{background:rgba(46,107,255,.12);color:var(--blue-500);}
.tag-b{background:rgba(127,178,255,.16);color:#1E5BD1;}
.tag-c{background:rgba(28,64,128,.1);color:var(--navy-600);}
.tag-news{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.25);}
.featured-body h2{font-size:29px;line-height:1.25;margin-bottom:14px;letter-spacing:-.01em;}
.featured-body p{color:var(--slate-600);font-size:15.5px;margin-bottom:22px;}
.meta-row{
  display:flex;align-items:center;gap:14px;
  font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--slate-500);
  margin-bottom:24px;
}
.meta-row span{display:flex;align-items:center;gap:6px;}
.meta-dot{width:3px;height:3px;border-radius:50%;background:var(--slate-500);}
.read-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--navy-900);font-size:15px;
}
.read-link .arrow{transition:transform .25s;}
.featured-card:hover .read-link .arrow{transform:translateX(5px);}

/* ============ GRID ============ */
.blog{padding:56px 0 20px;}
.blog-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:26px;
}
.blog-card{
  background:var(--paper-2);border-radius:18px;border:1px solid var(--line);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .3s ease, box-shadow .3s ease, opacity .25s ease;
  display:flex;flex-direction:column;
}
.blog-card:hover{transform:translateY(-6px);box-shadow:0 24px 48px -18px rgba(10,23,48,.25);}
.blog-card.hide{display:none;}
.blog-thumb{
  position:relative;height:170px;overflow:hidden;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-800));
}
.blog-thumb .grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(91,140,255,.14) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(91,140,255,.14) 1px, transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(circle at 70% 30%, #000 0%, transparent 70%);
}
.bt-glow{
  position:absolute;border-radius:50%;filter:blur(2px);opacity:.45;
  background:radial-gradient(circle, var(--blue-400), transparent 70%);
}
.blog-thumb .thumb-chip{
  position:absolute;top:12px;left:12px;z-index:2;
}
.blog-thumb .thumb-fade{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(0deg, rgba(5,11,24,.35) 0%, transparent 50%);
}
.blog-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.blog-body h3{font-size:17px;line-height:1.35;margin:0 0 10px;letter-spacing:-.005em;}
.blog-body p{color:var(--slate-600);font-size:14px;line-height:1.55;flex:1;}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--slate-500);
}
.card-meta .cm-read{display:flex;align-items:center;gap:6px;color:var(--blue-500);font-weight:600;}

/* reveal on scroll */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1);}
[data-reveal].in{opacity:1;transform:translateY(0);}

/* ============ Q&A SECTION ============ */
.qa-section{padding:24px 0 70px;}
.qa-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.qa-intro h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.01em;margin-bottom:12px;}
.qa-intro p{color:var(--slate-600);font-size:15px;margin-bottom:26px;max-width:420px;}
.qa-list{display:flex;flex-direction:column;gap:12px;}
.qa-item{
  background:var(--paper-2);border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;cursor:pointer;transition:.2s;
}
.qa-item:hover{border-color:rgba(46,107,255,.35);}
.qa-q{display:flex;align-items:center;justify-content:space-between;gap:12px;font-weight:600;font-size:14.5px;color:var(--navy-900);}
.qa-q .qa-plus{
  flex-shrink:0;width:22px;height:22px;border-radius:50%;background:rgba(46,107,255,.1);
  color:var(--blue-500);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
  transition:transform .25s;
}
.qa-item.open .qa-q .qa-plus{transform:rotate(45deg);}
.qa-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  color:var(--slate-600);font-size:13.8px;line-height:1.6;
}
.qa-item.open .qa-a{max-height:220px;margin-top:12px;}
.qa-badge{
  display:inline-flex;align-items:center;gap:6px;font-family:'JetBrains Mono',monospace;
  font-size:11px;color:var(--blue-500);background:rgba(46,107,255,.08);
  padding:3px 10px;border-radius:99px;margin-top:10px;
}
.qa-form-card{
  background:linear-gradient(160deg,var(--navy-900),var(--navy-950));
  border-radius:22px;padding:36px;color:#fff;position:relative;overflow:hidden;
}
.qa-form-card .grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(91,140,255,.1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(91,140,255,.1) 1px, transparent 1px);
  background-size:32px 32px;
  mask-image:radial-gradient(circle at 80% 0%, #000 0%, transparent 70%);
}
.qa-form-card h3{color:#fff;font-size:20px;margin-bottom:8px;position:relative;z-index:2;}
.qa-form-card > p{color:#AAB9DE;font-size:14px;margin-bottom:22px;position:relative;z-index:2;}
.qa-form{position:relative;z-index:2;display:flex;flex-direction:column;gap:14px;}
.qa-form label{font-family:'JetBrains Mono',monospace;font-size:11.5px;color:#8FA3D6;margin-bottom:6px;display:block;}
.qa-form input, .qa-form select, .qa-form textarea{
  width:100%;background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
  border-radius:10px;padding:11px 14px;color:#fff;font-family:'Inter',sans-serif;font-size:14px;
  outline:none;transition:.2s;
}
.qa-form input:focus, .qa-form select:focus, .qa-form textarea:focus{border-color:var(--blue-400);background:rgba(255,255,255,.09);}
.qa-form input::placeholder, .qa-form textarea::placeholder{color:#5F6E8C;}
.qa-form textarea{resize:vertical;min-height:90px;}
.qa-form select{
  background-color:#0F2247;
  appearance:none;-webkit-appearance:none;-moz-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path d='M1 1l5 5 5-5' stroke='%237FB2FF' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:36px;cursor:pointer;
}
.qa-form select:hover{background-color:#14295A;}
.qa-form select option{
  background-color:#0F2247;color:#fff;padding:10px;
}
.qa-row2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.qa-submit{
  background:linear-gradient(135deg,var(--blue-500),var(--blue-400));
  color:#fff;font-weight:700;padding:13px 20px;border:none;border-radius:10px;font-size:14.5px;
  display:flex;align-items:center;justify-content:center;gap:8px;transition:.2s;
}
.qa-submit:hover{filter:brightness(1.08);}
.qa-confirm{
  display:none;align-items:center;gap:10px;background:rgba(127,178,255,.12);
  border:1px solid rgba(127,178,255,.3);color:var(--ice-400);padding:12px 14px;
  border-radius:10px;font-size:13.5px;position:relative;z-index:2;
}
.qa-confirm.show{display:flex;}

/* ============ FINAL CTA ============ */
.final-cta{padding:0 0 100px;}
.final-card{
  position:relative;overflow:hidden;
  background:radial-gradient(ellipse 100% 140% at 50% 0%, var(--navy-700), var(--navy-950) 70%);
  border-radius:28px;padding:64px 48px;text-align:center;color:#fff;
}
.final-card .grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(91,140,255,.1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(91,140,255,.1) 1px, transparent 1px);
  background-size:36px 36px;
  mask-image:radial-gradient(circle at 50% 30%, #000 0%, transparent 80%);
}
.final-card h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:12px;position:relative;z-index:2;}
.final-card p{color:#AAB9DE;max-width:460px;margin:0 auto 28px;position:relative;z-index:2;}
.btn-primary{
  position:relative;z-index:2;display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--blue-500),var(--ice-400));
  color:#04101F;font-weight:700;padding:14px 28px;border-radius:99px;font-size:15px;
  box-shadow:0 12px 30px -10px rgba(46,107,255,.6);transition:transform .2s;
}
.btn-primary:hover{transform:translateY(-2px);}

/* ============ FOOTER ============ */
footer{background:var(--navy-950);color:#8FA3D6;padding:60px 0 0;}
.footer-top{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:32px;padding-bottom:44px;border-bottom:1px solid var(--line-dark);}
.footer-brand p{font-size:13.5px;color:#7C8DBE;margin:14px 0 16px;line-height:1.6;}
.footer-social{font-size:13px;color:var(--ice-400);font-weight:600;}
.footer-col h4{color:#fff;font-size:13.5px;margin-bottom:16px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:13.5px;color:#8FA3D6;}
.footer-col a:hover{color:var(--ice-400);}
.footer-badges{display:flex;gap:22px;padding:24px 0;flex-wrap:wrap;}
.footer-badge{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#7C8DBE;font-family:'JetBrains Mono',monospace;}
.footer-badge .sw{width:7px;height:7px;border-radius:50%;background:var(--ice-400);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:22px 0;border-top:1px solid var(--line-dark);font-size:12.5px;color:#5F6E8C;}
.flags{display:flex;gap:14px;}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .blog-grid{grid-template-columns:repeat(2,1fr);}
  .featured-card{grid-template-columns:1fr;}
  .featured-visual{min-height:220px;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .qa-layout{grid-template-columns:1fr;}
}
@media (max-width:680px){
  .navlinks{
    position:fixed;top:76px;left:0;right:0;background:#FFFFFF;
    flex-direction:column;align-items:flex-start;padding:20px 24px;gap:16px;
    border-bottom:1px solid var(--line);
    box-shadow:0 12px 30px -14px rgba(10,23,48,.15);
    transform:translateY(-120%);transition:transform .3s;
  }
  .navlinks.open{transform:translateY(0);}
  .nav-toggle{display:block;}
  .dropdown{position:static;opacity:1;visibility:visible;transform:none;display:none;background:none;border:none;padding:6px 0 0 12px;box-shadow:none;}
  .navlinks > li:hover .dropdown{display:block;}
  .blog-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
  .final-card{padding:44px 24px;}
  .qa-row2{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}