:root{
  --bg:#07111f; --bg2:#0b1a2e; --card:#0d2038; --line:#1c3556;
  --blue:#2f8cff; --sun:#ffc933; --mint:#31e0b0; --text:#e8f0fb; --mute:#93a7c2;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:400 17px/1.6 Inter,system-ui,sans-serif;overflow-x:hidden;position:relative}
h1,h2,h3,.brand,.btn,.results b{font-family:"Space Grotesk",sans-serif}
a{color:inherit;text-decoration:none}

#trace{position:absolute;left:0;top:0;width:100%;pointer-events:none;z-index:1;overflow:visible}
#traceBase{stroke:var(--line);stroke-width:3;stroke-dasharray:2 10;stroke-linecap:round}
#traceLine{stroke-width:4;stroke-linecap:round;filter:drop-shadow(0 0 6px rgba(47,140,255,.7))}
#pulse{fill:var(--sun);filter:drop-shadow(0 0 12px var(--sun))}

.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:14px 5vw;background:linear-gradient(var(--bg),rgba(7,17,31,0));backdrop-filter:blur(6px)}
.brand{font-weight:700;letter-spacing:.14em;display:flex;flex-direction:column;line-height:1.1}
.brand small{font:500 9px Inter;letter-spacing:.3em;color:var(--sun);text-transform:uppercase}
.nav nav{display:flex;gap:26px;align-items:center;font-size:15px;color:var(--mute)}
.nav nav a:hover{color:var(--text)}

.btn{display:inline-block;background:var(--sun);color:#1a1200;font-weight:700;padding:14px 26px;border-radius:999px;transition:filter .2s}
.btn:hover{filter:brightness(1.1) drop-shadow(0 6px 18px rgba(255,201,51,.35))}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-sm{padding:8px 18px;color:#1a1200}
.nav nav a.nav-shop{display:inline-flex;align-items:center;gap:7px;color:var(--mint);border:1px solid var(--mint);padding:7px 16px;border-radius:999px;font-weight:600;transition:background .2s,color .2s}
.nav-shop svg{width:17px;height:17px}
.nav nav a.nav-shop:hover{background:var(--mint);color:#04241b}
.btn.ghost.shop{border-color:var(--mint);color:var(--mint)}
.btn.ghost.shop:hover{background:var(--mint);color:#04241b;filter:none}
.btn.shop-cta{background:var(--mint);color:#04241b}
.btn.shop-cta:hover{filter:brightness(1.08) drop-shadow(0 6px 18px rgba(49,224,176,.35))}
.btn.big{font-size:22px;padding:20px 40px}

main{position:relative;z-index:2}
.sec{min-height:100vh;display:grid;grid-template-columns:1fr 1fr;gap:6vw;align-items:center;padding:120px 7vw}
.sec.rev .art{order:2}
.sec.col{display:flex;flex-direction:column;align-items:center;text-align:center;justify-content:center;gap:22px}
.sec.hero{padding-top:140px}
.copy{max-width:560px}
.eyebrow{color:var(--sun);font-size:13px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;margin-bottom:14px}
h1{font-size:clamp(38px,5vw,68px);line-height:1.05;margin-bottom:22px}
h2{font-size:clamp(30px,3.6vw,50px);line-height:1.1;margin-bottom:18px}
.col h2{max-width:760px}
.lead{color:var(--mute);font-size:19px;margin-bottom:28px}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.trust{display:flex;gap:20px;flex-wrap:wrap;list-style:none;color:var(--mute);font-size:14px}
.trust li::before{content:"✓ ";color:var(--mint)}
.ticks{list-style:none;margin-top:18px}
.ticks li{padding:6px 0 6px 26px;position:relative;color:var(--mute)}
.ticks li::before{content:"";position:absolute;left:0;top:15px;width:14px;height:2px;background:var(--mint)}
.split .w{display:inline-block;overflow:hidden;vertical-align:top}
.split .w i{display:inline-block;font-style:normal}

.art{display:flex;justify-content:center}
.ill{width:100%;max-width:520px;overflow:visible}
.cell rect{fill:#0d2a52;stroke:var(--blue);stroke-width:2;transition:fill .3s}
.cell path{stroke:var(--blue);stroke-opacity:.5;stroke-width:1}
.cell.on rect{fill:#1b5fb8;filter:drop-shadow(0 0 8px rgba(47,140,255,.8))}
.leaf rect{fill:#0d2a52;stroke:var(--mint);stroke-width:2}
.leaf path{stroke:var(--mint);stroke-opacity:.5}
.win rect{fill:var(--card);stroke:var(--blue);stroke-width:2}
.win path{stroke:var(--line);stroke-width:2}
.win circle{fill:var(--mute)}
.win .ln{stroke:var(--blue);stroke-width:4;stroke-linecap:round}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:1000px;width:100%;margin-top:20px}
.step{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;text-align:left;transition:border-color .3s,box-shadow .3s}
.step.on{border-color:var(--sun);box-shadow:0 0 30px rgba(255,201,51,.18)}
.step span{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--sun);color:#1a1200;font:700 18px "Space Grotesk";margin-bottom:14px}
.step p{color:var(--mute)}

.calc{display:grid;grid-template-columns:1fr 1fr;gap:30px;max-width:980px;width:100%;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:34px;text-align:left}
.controls label{display:block;margin-bottom:22px;color:var(--mute)}
select,input[type=range]{width:100%;margin-top:10px}
select{background:var(--bg2);color:var(--text);border:1px solid var(--line);border-radius:10px;padding:12px}
input[type=range]{accent-color:var(--sun)}
.note{font-size:13px;color:var(--mute)}
.results{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.results div{background:var(--bg2);border-radius:14px;padding:18px}
.results b{display:block;font-size:34px;color:var(--sun)}
.results span{font-size:13px;color:var(--mute)}

.sec.tight{min-height:auto}
.cards{display:grid;gap:20px;max-width:1100px;width:100%;margin-top:14px}
.cards.four{grid-template-columns:repeat(4,1fr)}
.cards.three{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;text-align:left}
.card h3{font-size:19px;margin-bottom:10px;color:var(--sun)}
.card p{color:var(--mute);font-size:15px}
.quote blockquote{font-size:17px;margin-bottom:18px}
.quote figcaption{font:600 15px "Space Grotesk";color:var(--mint)}
.quote small{display:block;font:400 13px Inter;color:var(--mute)}
.faq{max-width:760px;width:100%;text-align:left}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px}
.faq summary::after{content:"+";color:var(--sun);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--mute);margin-top:12px}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:640px;width:100%}
.lead-form input,.lead-form select,.lead-form textarea{background:var(--bg2);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:14px;font:inherit;margin:0;width:100%}
.lead-form textarea,.lead-form button,.lead-form select{grid-column:1/-1}
.lead-form button{border:0;cursor:pointer;font-size:17px}
.car{will-change:transform}
.end{min-height:90vh}
.mini{color:var(--mute);font-size:15px}
footer{position:relative;z-index:2;text-align:center;padding:30px;color:var(--mute);font-size:14px;border-top:1px solid var(--line)}

@media(max-width:860px){
  .nav nav{gap:10px}
  .nav nav a:not(.btn){display:none}
  .nav nav a.nav-shop{display:inline-flex;padding:7px 13px;font-size:14px}
  .sec{grid-template-columns:1fr;padding:100px 6vw 60px;gap:30px;min-height:auto}
  .sec.rev .art{order:0}
  .steps,.calc,.cards.four,.cards.three,.lead-form{grid-template-columns:minmax(0,1fr)}
  .calc{padding:24px}
  #traceBase{stroke-width:2}#traceLine{stroke-width:3}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* ---------- Logo animado Bitnetics ---------- */
html.bn-lock,html.bn-lock body{overflow:hidden}
#bnIntro{position:fixed;inset:0;z-index:100;background:#030810;clip-path:inset(0 0 0 0)}
#bnSkip{position:absolute;right:24px;bottom:24px;z-index:3;background:rgba(13,32,56,.6);color:var(--mute);border:1px solid var(--line);border-radius:999px;padding:9px 18px;font:500 13px Inter,sans-serif;letter-spacing:.08em;cursor:pointer;backdrop-filter:blur(6px);transition:color .2s,border-color .2s}
#bnSkip:hover{color:var(--text);border-color:var(--blue)}
@media (max-aspect-ratio:1/1){#bnIntro .bn-svg{transform:scale(1.3)}}
.brand{--lw:190px;width:var(--lw);gap:3px}
.nav-logo{display:block;width:100%}
/* el eslogan se alinea con el texto "BITNETICS" del logo (empieza al 21.4 % y llega al borde derecho) a cualquier tamaño */
.brand-tag{display:block;margin-left:21.4%;width:78.6%}
.brand-tag svg{display:block;width:100%;overflow:visible}
.brand-tag text{fill:var(--sun);font:600 5.4px Inter,sans-serif}
.foot-logo{width:min(520px,80vw);margin:10px auto 26px}
@media(max-width:860px){.brand{--lw:132px}}
@media(max-width:400px){.nav nav a.nav-shop{padding:6px 11px;font-size:13px;gap:5px}.nav-shop svg{width:15px;height:15px}.nav .btn-sm{padding:7px 14px;font-size:14px}}