:root{
  --bg:#071226;
  --panel:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.14);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.70);

  --ypf-blue:#0b4fb3;
  --ypf-blue2:#073a86;
  --ypf-yellow:#ffcc33;

  --shadow: 0 18px 50px rgba(0,0,0,.45);
  --r:18px;
  --max:1120px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:
    radial-gradient(900px 700px at 18% 12%, rgba(11,79,179,.35), transparent 55%),
    radial-gradient(900px 700px at 82% 18%, rgba(255,204,51,.18), transparent 55%),
    radial-gradient(900px 700px at 50% 90%, rgba(0,255,200,.10), transparent 60%),
    var(--bg);
  color:var(--text);
  line-height:1.6;
}
a{color:inherit; text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%; display:block}
.container{width:min(var(--max), calc(100% - 40px)); margin:0 auto}
.skip{position:absolute; left:-999px; top:10px; padding:10px 12px; border-radius:12px; background:#fff; color:#000; z-index:30}
.skip:focus{left:10px}

.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  padding:22px;
}
.h3{font-size:18px; margin:0 0 10px}
.h4{font-size:16px; margin:0 0 10px}
.muted{color:var(--muted)}
.tiny{font-size:12px}

/* Topbar */
.topbar{position:sticky; top:0; z-index:25; background:rgba(7,18,38,.55); backdrop-filter:blur(12px); border-bottom:1px solid rgba(255,255,255,.10)}
.topbar-inner{display:flex; gap:16px; align-items:center; justify-content:space-between; padding:14px 0}
.brand{display:flex; gap:12px; align-items:center}
.brand-badge{
  width:56px; height:40px; display:grid; place-items:center; border-radius:14px;
  background:linear-gradient(135deg, var(--ypf-blue), var(--ypf-blue2));
  color:#fff; font-weight:900; letter-spacing:.08em; border:1px solid rgba(255,255,255,.18);
  box-shadow:0 10px 26px rgba(0,0,0,.35);
}
.kicker{margin:0; font-size:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.10em}
.title{margin:0; font-weight:700}
.nav{display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end}
.nav a{padding:8px 10px; border-radius:12px; border:1px solid transparent; opacity:.92}
.nav a:hover{opacity:1; border-color:rgba(255,255,255,.16); background:rgba(255,255,255,.05); text-decoration:none}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:10px 14px; border-radius:14px; border:1px solid rgba(255,255,255,.18);
  background:linear-gradient(135deg, rgba(11,79,179,.92), rgba(7,58,134,.92));
  color:#fff; font-weight:800; cursor:pointer;
}
.btn:hover{filter:brightness(1.05); text-decoration:none}
.btn.ghost{background:rgba(255,255,255,.06); color:rgba(255,255,255,.92)}

/* Hero */
.hero{position:relative; padding:30px 0 34px}
.hero-bg{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(7,18,38,.65), rgba(7,18,38,.90) 72%, rgba(7,18,38,1)),
             url("assets/oil-refinery.jpg");
  background-size:cover; background-position:center;
  filter:saturate(1.05) contrast(1.05);
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns: 1.3fr .7fr;
  gap:16px;
  align-items:end;
  min-height:520px;
}
.hero-card{
  padding:26px;
  border-radius:22px;
  background:linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.05));
  border:1px solid rgba(255,255,255,.18);
  box-shadow:var(--shadow);
}
.pill{display:inline-flex; padding:8px 12px; border-radius:999px; border:1px solid rgba(255,255,255,.18); background:rgba(0,0,0,.20); font-size:12px; color:rgba(255,255,255,.85); margin:0 0 10px}
.hero h1{margin:0 0 10px; font-size:clamp(30px, 4.2vw, 48px); line-height:1.12}
.lead{margin:0 0 16px; color:rgba(255,255,255,.88)}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin:6px 0 14px}
.disclaimer{
  margin-top:10px; padding:12px 14px; border-radius:14px;
  background:rgba(255,204,51,.10); border:1px solid rgba(255,204,51,.22);
  color:rgba(255,255,255,.88); font-size:13px;
}
.hero-side{border-radius:22px; background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.16)}
.fact{padding:10px 0; border-bottom:1px solid rgba(255,255,255,.10)}
.fact:last-child{border-bottom:0}
.fact-k{margin:0; font-size:12px; color:var(--muted); text-transform:uppercase; letter-spacing:.08em}
.fact-v{margin:4px 0 0; font-weight:800}

/* Sections */
.section{padding:26px 0}
.section.alt{background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,0)); border-top:1px solid rgba(255,255,255,.06); border-bottom:1px solid rgba(255,255,255,.06)}
.section-head{margin-bottom:12px}
.section-head h2{margin:0 0 6px; font-size:26px}

.cards-3{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:14px; margin-top:14px}
.cards-2{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:14px; margin-top:14px}

.split{margin-top:16px; display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:center}
.split-media img{border-radius:18px; border:1px solid rgba(255,255,255,.12)}
.highlight{background:linear-gradient(180deg, rgba(11,79,179,.16), rgba(255,255,255,.05)); border-color:rgba(255,255,255,.18)}
.check{margin:10px 0 0; padding-left:18px}
.check li{margin:8px 0}

/* Steps */
.steps{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:14px; margin-top:12px}
.step-n{
  width:36px; height:36px; display:grid; place-items:center; border-radius:12px;
  background:rgba(255,204,51,.16); border:1px solid rgba(255,204,51,.24);
  color:rgba(255,255,255,.95); font-weight:900; margin:0 0 10px;
}

/* Banner */
.banner{
  margin-top:16px;
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:16px;
  align-items:center;
  padding:18px;
  border-radius:22px;
  background:linear-gradient(135deg, rgba(255,204,51,.10), rgba(11,79,179,.10));
  border:1px solid rgba(255,255,255,.18);
}
.banner-media img{border-radius:18px; border:1px solid rgba(255,255,255,.12)}

/* Form */
.form-card{padding:24px}
.form-head{margin-bottom:12px}
.form-grid{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:14px}
.field label{display:block; font-weight:800; margin-bottom:8px}
.field input{
  width:100%; padding:12px 12px; border-radius:14px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(0,0,0,.18);
  color:var(--text);
  outline:none;
}
.field input:focus{border-color:rgba(255,204,51,.35); box-shadow:0 0 0 3px rgba(255,204,51,.10)}
.hint{margin:8px 0 0; font-size:12px; color:var(--muted)}
.actions{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-top:12px}
.status{margin-top:12px; padding:12px 14px; border-radius:14px; border:1px solid transparent; min-height:20px}
.status.ok{border-color:rgba(0,255,200,.22); background:rgba(0,255,200,.08)}
.status.err{border-color:rgba(255,90,90,.26); background:rgba(255,90,90,.10)}
.saved{margin-top:10px}
.saved summary{cursor:pointer}
.code{margin:10px 0 0; padding:12px; border-radius:14px; border:1px solid rgba(255,255,255,.14); background:rgba(0,0,0,.18); overflow:auto; font-size:12px}

/* FAQ */
.qa summary{cursor:pointer; font-weight:800; padding:10px 0}
.qa p{margin:0 0 10px; color:rgba(255,255,255,.84)}

/* Footer */
.footer{padding:26px 0; border-top:1px solid rgba(255,255,255,.08); background:rgba(0,0,0,.14)}
.footer-inner{display:grid; grid-template-columns:1fr 1fr; gap:16px; align-items:start}
.footer-title{margin:0; font-weight:900}
.credits ul{margin:8px 0 0; padding-left:18px}
.credits li{margin:6px 0; color:rgba(255,255,255,.80)}
.fineprint{margin-top:14px}

@media (max-width: 980px){
  .topbar-inner{flex-direction:column; align-items:flex-start}
  .nav{justify-content:flex-start}
  .hero-inner{grid-template-columns:1fr; min-height:620px}
  .cards-3{grid-template-columns:1fr}
  .cards-2{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .banner{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}