:root{
  --bg:#050d1a;--bg2:#08182e;--panel:#0b2038;--line:rgba(103,232,249,.18);
  --cyan:#22d3ee;--cyan2:#67e8f9;--amber:#ffd23f;--orange:#ff7a18;--green:#4ade80;
  --text:#dbe7f5;--muted:#8da4bf;--radius:18px;
  --font:"Segoe UI",Inter,system-ui,-apple-system,Roboto,Arial,sans-serif;
  --mono:ui-monospace,"Cascadia Code",Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;min-height:100vh;
  background-image:radial-gradient(circle at 85% -10%,rgba(255,210,63,.12),transparent 40%),radial-gradient(circle at 0 20%,rgba(34,211,238,.10),transparent 45%),
  linear-gradient(rgba(103,232,249,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(103,232,249,.045) 1px,transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;background-attachment:fixed}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan2);text-decoration:none}
a:hover{color:var(--amber)}
h1,h2,h3{line-height:1.15;color:#fff;letter-spacing:-.02em}
h1{font-size:clamp(2.2rem,5.4vw,4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);font-weight:750}
h3{font-size:1.2rem}
p{color:var(--text)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-link{position:absolute;left:-999px;top:8px;background:var(--amber);color:#000;padding:8px 14px;border-radius:8px;z-index:100;font-weight:700}
.skip-link:focus{left:12px}
.ico{width:1.25em;height:1.25em;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none;vertical-align:-.2em}

/* header */
.site-header{position:sticky;top:0;z-index:50;transition:.3s;border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(5,13,26,.82);backdrop-filter:blur(14px);border-color:var(--line)}
.header-inner{max-width:1200px;margin:auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand img{border-radius:12px;box-shadow:0 0 18px rgba(34,211,238,.35)}
.brand-copy{display:flex;flex-direction:column;line-height:1.1}
.brand-copy strong{font-size:1.15rem;letter-spacing:.04em;font-weight:800}
.brand-copy strong span{color:var(--amber)}
.brand-copy small{color:var(--muted);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;margin-top:3px}
.desktop-nav{display:flex;align-items:center;gap:6px}
.desktop-nav a{color:var(--text);padding:8px 14px;border-radius:999px;font-size:.93rem;font-weight:500;transition:.2s}
.desktop-nav a:hover,.desktop-nav a[aria-current]{background:rgba(34,211,238,.12);color:var(--cyan2)}
.desktop-nav .nav-contact{border:1px solid var(--amber);color:var(--amber)}
.desktop-nav .nav-contact:hover,.desktop-nav .nav-contact[aria-current]{background:var(--amber);color:#05101f}
.mobile-menu{display:none;position:relative}
.mobile-menu summary{list-style:none;cursor:pointer;width:46px;height:46px;border-radius:12px;border:1px solid var(--line);display:grid;place-content:center;gap:5px}
.mobile-menu summary::-webkit-details-marker{display:none}
.mobile-menu summary i{display:block;width:22px;height:2px;background:var(--cyan2);border-radius:2px}
.mobile-menu nav{position:absolute;right:0;top:56px;min-width:230px;background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:10px;display:grid;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.mobile-menu nav a{padding:12px 14px;border-radius:10px;color:var(--text)}
.mobile-menu nav a[aria-current],.mobile-menu nav a:hover{background:rgba(34,211,238,.12);color:var(--amber)}

/* buttons */
.button{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:14px;font-weight:700;font-size:1rem;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .2s,box-shadow .2s,background .2s;position:relative;overflow:hidden}
.button:hover{transform:translateY(-2px)}
.button-primary{background:linear-gradient(135deg,var(--amber),var(--orange));color:#1a1000;box-shadow:0 8px 28px rgba(255,122,24,.35)}
.button-primary:hover{color:#1a1000;box-shadow:0 12px 36px rgba(255,122,24,.55)}
.button-ghost{background:rgba(34,211,238,.08);border-color:var(--cyan);color:var(--cyan2)}
.button-ghost:hover{background:rgba(34,211,238,.2);color:#fff}

.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan2);display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.eyebrow::before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--amber),transparent)}
.glass{background:linear-gradient(160deg,rgba(11,32,56,.85),rgba(8,24,46,.7));border:1px solid var(--line);border-radius:var(--radius);backdrop-filter:blur(10px);box-shadow:0 20px 50px rgba(0,0,0,.35)}

/* hero */
.hero{max-width:1200px;margin:auto;padding:60px 24px 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--amber),var(--orange));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:1.15rem;color:var(--muted);margin:22px 0 30px;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{position:relative}
.hero-visual img{border-radius:28px;border:1px solid var(--line);box-shadow:0 0 70px rgba(34,211,238,.2)}
.hud{position:absolute;padding:10px 14px;border-radius:14px;font-family:var(--mono);font-size:.8rem;background:rgba(5,13,26,.88);border:1px solid var(--cyan);color:var(--cyan2);display:flex;gap:8px;align-items:center;animation:float 5s ease-in-out infinite}
.hud b{color:var(--amber)}
.hud-1{left:-18px;bottom:36px}.hud-2{right:-12px;top:30px;animation-delay:-2s;border-color:var(--amber)}
@keyframes float{50%{transform:translateY(-8px)}}

.stats{max-width:1200px;margin:10px auto 0;padding:0 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{padding:22px;text-align:left}
.stat strong{display:block;font-size:2.2rem;font-family:var(--mono);color:var(--amber)}
.stat span{color:var(--muted);font-size:.92rem}

.section{max-width:1200px;margin:auto;padding:80px 24px}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{color:var(--muted);margin-top:12px;font-size:1.05rem}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{overflow:hidden;display:flex;flex-direction:column;transition:transform .3s,border-color .3s,box-shadow .3s}
.card:hover{transform:translateY(-6px);border-color:var(--cyan);box-shadow:0 20px 50px rgba(34,211,238,.18)}
.card-media{aspect-ratio:400/260;overflow:hidden;border-bottom:1px solid var(--line)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-media img{transform:scale(1.06)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body p{color:var(--muted);font-size:.96rem}
.tag{align-self:flex-start;font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 10px;border-radius:999px;border:1px solid currentColor}
.tag-amber{color:var(--amber)}.tag-cyan{color:var(--cyan2)}.tag-green{color:var(--green)}.tag-orange{color:var(--orange)}
.more{margin-top:auto;font-weight:700;font-size:.92rem}

.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature{padding:24px}
.feature .ico{width:2.1em;height:2.1em;padding:9px;border-radius:14px;background:rgba(255,210,63,.1);color:var(--amber);border:1px solid rgba(255,210,63,.35);margin-bottom:14px;box-sizing:content-box;width:26px;height:26px}
.feature h3{margin-bottom:6px}
.feature p{color:var(--muted);font-size:.94rem}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.split>img,.diagram{border-radius:24px;border:1px solid var(--line);width:100%}
.checklist{list-style:none;display:grid;gap:12px;margin:20px 0}
.checklist li{display:flex;gap:12px;color:var(--text)}
.checklist li::before{content:"";flex:none;width:20px;height:20px;margin-top:3px;border-radius:50%;background:radial-gradient(circle,var(--bg) 35%,transparent 37%),conic-gradient(var(--cyan),var(--amber),var(--cyan))}

.steps{counter-reset:s;display:grid;gap:16px}
.step{padding:22px 24px 22px 84px;position:relative}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;left:22px;top:20px;font-family:var(--mono);font-size:1.8rem;font-weight:800;color:var(--amber)}
.step h3{margin-bottom:6px}.step p{color:var(--muted)}

.band{padding:56px 40px;text-align:center;border-radius:28px;border:1px solid var(--cyan);background:radial-gradient(circle at 50% 0,rgba(255,210,63,.18),transparent 60%),var(--panel);box-shadow:0 0 60px rgba(34,211,238,.15)}
.band p{color:var(--muted);margin-top:10px}

/* tabla */
.table-wrap{overflow-x:auto;border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;min-width:680px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:.94rem}
th{font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan2);background:rgba(34,211,238,.06)}
td:first-child{font-weight:700;color:#fff}

/* calculadora */
.calc{padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:32px}
.range-row{margin-bottom:22px}
.range-row label{display:flex;justify-content:space-between;font-weight:600;margin-bottom:8px}
.range-row output{font-family:var(--mono);color:var(--amber)}
input[type=range]{width:100%;accent-color:var(--amber)}
.results{display:grid;gap:14px;align-content:start}
.result{padding:18px;border-radius:14px;background:rgba(5,13,26,.7);border:1px solid var(--line)}
.result small{display:block;font-family:var(--mono);color:var(--muted);letter-spacing:.1em;text-transform:uppercase;font-size:.7rem}
.result strong{font-size:1.8rem;font-family:var(--mono);color:var(--cyan2)}
.result.hl strong{color:var(--amber)}
.note{font-size:.85rem;color:var(--muted);margin-top:14px}

/* paginas internas */
.page-shell{max-width:1000px;margin:auto;padding:70px 24px}
.page-heading{margin-bottom:40px;max-width:760px}
.page-heading p{color:var(--muted);font-size:1.1rem;margin-top:16px}
.prose{padding:40px}
.prose h2{font-size:1.4rem;margin:30px 0 10px;color:var(--amber)}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--text);margin-bottom:10px}
.prose ul{padding-left:22px}

.contact-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:start}
.contact-card{padding:36px}
.contact-form{display:grid;gap:20px;margin-top:20px}
.field label{display:block;font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan2);margin-bottom:8px}
.field input,.field textarea,.field select{width:100%;background:rgba(5,13,26,.8);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:#fff;font:inherit;transition:.2s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--amber);box-shadow:0 0 0 3px rgba(255,210,63,.18)}
.field textarea{resize:vertical;min-height:140px}
.honeypot{position:absolute;left:-9999px;height:0;overflow:hidden}
.form-message{padding:14px 18px;border-radius:12px;margin:16px 0;font-weight:600}
.success-message{background:rgba(74,222,128,.12);border:1px solid var(--green);color:var(--green)}
.error-message{background:rgba(255,122,24,.12);border:1px solid var(--orange);color:#ffb37a}
.contact-aside{padding:10px 8px}
.contact-aside h2{margin-bottom:12px}
.contact-aside>p{color:var(--muted)}
.contact-detail{display:flex;gap:16px;margin-top:22px}
.contact-detail .ico{width:22px;height:22px;padding:11px;border-radius:14px;border:1px solid var(--cyan);color:var(--cyan2);box-sizing:content-box}
.contact-detail small{font-family:var(--mono);color:var(--muted);letter-spacing:.12em}
.contact-detail p{margin:0}

/* footer */
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:linear-gradient(180deg,transparent,rgba(8,24,46,.9))}
.footer-inner{max-width:1200px;margin:auto;padding:56px 24px 28px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px}
.footer-grid h3{font-family:var(--mono);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--amber);margin-bottom:14px}
.footer-grid p{color:var(--muted);font-size:.95rem}
.footer-links{display:grid;gap:8px}
.footer-links a{color:var(--text)}.footer-links a:hover{color:var(--amber)}
.footer-bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;color:var(--muted);font-size:.88rem}
.footer-bottom nav{display:flex;gap:18px}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.visible,html:not(.js) .reveal{opacity:1;transform:none}

@media (max-width:980px){
  .desktop-nav{display:none}.mobile-menu{display:block}
  .hero,.split,.contact-layout,.calc{grid-template-columns:1fr}
  .stats,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .hud-1{left:8px}.hud-2{right:8px}
}
@media (max-width:620px){
  .cards,.stats,.feature-grid{grid-template-columns:1fr}
  .section{padding:56px 20px}.prose,.contact-card,.calc{padding:24px}
  .band{padding:40px 22px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}