.bt-root{
  --bg:#050507; --bg-2:#0a0a12; --fg:#fff; --fg-dim:rgba(255,255,255,.62);
  --line:rgba(255,255,255,.10); --card:rgba(255,255,255,.035);
  --cyan:#00f0ff; --mag:#ff2bd6; --lime:#c6ff3a; --wa:#25d366; --bad:#ff5d6c;
  background:var(--bg); color:var(--fg); min-height:100vh; position:relative; overflow:hidden;
  font-family:"Space Grotesk",ui-sans-serif,sans-serif; font-feature-settings:"ss01","ss02";
}
.bt-root.light{
  --bg:#f5f5f2; --bg-2:#ecebe6; --fg:#0a0a0d; --fg-dim:rgba(10,10,13,.66);
  --line:rgba(0,0,0,.10); --card:rgba(0,0,0,.025);
  --cyan:#0094a6; --mag:#c20096; --lime:#5f8f00;
}
.bt-mono{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--fg-dim)}
.bt-grid-bg{position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(to right,var(--line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line) 1px,transparent 1px);
  background-size:84px 84px;mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 65%);opacity:.7}
.bt-orb{position:fixed;border-radius:50%;filter:blur(90px);opacity:.4;pointer-events:none;z-index:0;
  mix-blend-mode:screen}
.bt-root.light .bt-orb{mix-blend-mode:multiply;opacity:.2}
.bt-wrap{position:relative;z-index:2;width:min(1800px,92vw);margin:0 auto;padding:0}

/* reveal — keyframe-based (can't get stuck like a transition); content visible by default */
.bt-rv{opacity:1;transform:none}
@media (prefers-reduced-motion:no-preference){
  .bt-rv:not(.in){opacity:0;transform:translateY(24px)}
  .bt-rv.in{animation:bt-rise .7s cubic-bezier(.16,1,.3,1) var(--bt-d,0ms) both}
}
@keyframes bt-rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}

/* nav */
.bt-nav{position:fixed;top:0;left:0;right:0;z-index:50;padding:12px 0;
  background:color-mix(in srgb,var(--bg) 60%,transparent);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.bt-nav-inner{width:min(1800px,92vw);margin:0 auto;display:flex;align-items:center;
  justify-content:space-between;gap:16px}
.bt-nav.scrolled{border-bottom-color:var(--line);background:color-mix(in srgb,var(--bg) 86%,transparent)}
.bt-nav-brand{display:flex;align-items:center;gap:14px}
.bt-nav-brand img{height:26px;width:auto}
.bt-nav-brand .div{width:1px;height:22px;background:var(--line)}
.bt-nav-brand .tag{font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.13em;
  text-transform:uppercase;color:var(--fg-dim);line-height:1.3}
.bt-nav-brand .tag b{color:var(--fg);font-weight:600}
@media (max-width:620px){.bt-nav-brand .div,.bt-nav-brand .tag{display:none}}
.bt-wa-btn{display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border-radius:999px;
  background:var(--wa);color:#04210f;font-weight:600;font-size:14.5px;border:0;cursor:pointer;
  box-shadow:0 0 0 1px rgba(255,255,255,.08),0 6px 20px rgba(37,211,102,.28);
  transition:transform .2s,box-shadow .2s}
.bt-wa-btn:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,255,255,.12),0 10px 28px rgba(37,211,102,.4)}
.bt-wa-btn svg{width:17px;height:17px}

/* hero */
.bt-hero{position:relative;padding:150px 0 80px}
@media (max-width:640px){.bt-hero{padding:104px 0 56px}}
@media (max-width:560px){
  .bt-wa-btn{padding:10px 14px;font-size:13.5px}
  .bt-nav-brand img{height:23px}
}
.bt-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);align-items:center}
@media (max-width:900px){.bt-hero-grid{grid-template-columns:1fr;gap:36px}}
.bt-eyebrow{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;
  border:1px solid color-mix(in srgb,var(--cyan) 40%,transparent);
  background:color-mix(in srgb,var(--cyan) 8%,transparent);
  font-family:"JetBrains Mono",monospace;font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--cyan);font-weight:600}
.bt-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.bt-hero h1{font-size:clamp(38px,5.4vw,68px);line-height:1.02;letter-spacing:-.03em;font-weight:600;
  margin:24px 0 0;max-width:16ch;text-wrap:balance}
.bt-hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--cyan),var(--lime));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.bt-hero .lead{font-size:clamp(16px,1.5vw,19px);line-height:1.55;color:var(--fg-dim);margin:22px 0 0;max-width:48ch}
.bt-hero-cta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:34px}
.bt-cta-primary{display:inline-flex;align-items:center;gap:10px;padding:17px 26px;border-radius:999px;
  background:var(--wa);color:#04210f;font-weight:700;font-size:16.5px;border:0;cursor:pointer;
  box-shadow:0 8px 30px rgba(37,211,102,.34);transition:transform .2s,box-shadow .2s}
.bt-cta-primary:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(37,211,102,.48)}
.bt-cta-primary svg{width:19px;height:19px}
.bt-cta-ghost{display:inline-flex;align-items:center;gap:8px;padding:17px 22px;border-radius:999px;
  border:1px solid var(--line);color:var(--fg);font-weight:500;font-size:15.5px;cursor:pointer;
  background:transparent;transition:border-color .2s,background .2s}
.bt-cta-ghost:hover{border-color:color-mix(in srgb,var(--cyan) 50%,transparent);background:var(--card)}
.bt-trust{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.bt-trust span{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;color:var(--fg-dim)}
.bt-trust span svg{width:15px;height:15px;color:var(--cyan);flex-shrink:0}

/* hero media */
.bt-hero-media{position:relative}
.bt-hero-shot{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(0,0,0,.5);aspect-ratio:4/3}
.bt-hero-shot img{width:100%;height:100%;object-fit:cover}
.bt-hero-shot image-slot{display:block;width:100%;height:100%}
/* botón 'Cambiar imagen' sobre cualquier image-slot editable */
.bt-slot-edit{position:absolute;top:12px;right:12px;z-index:6;display:inline-flex;align-items:center;gap:6px;
  padding:8px 13px;border-radius:999px;border:1px solid rgba(255,255,255,.28);
  background:rgba(8,10,18,.62);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  color:#fff;font-family:inherit;font-size:12px;font-weight:600;cursor:pointer;
  box-shadow:0 4px 16px rgba(0,0,0,.35);transition:background .2s,transform .2s,border-color .2s}
.bt-slot-edit:hover{background:rgba(8,10,18,.85);border-color:color-mix(in srgb,var(--cyan) 55%,transparent);transform:translateY(-1px)}
.bt-slot-edit svg{width:14px;height:14px}
/* botones de cambio en el slider antes/después (en la barra inferior, no recortados) */
.bt-ba-edits{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.bt-ba-edits button{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);color:var(--fg);font-family:inherit;font-size:12.5px;
  font-weight:600;cursor:pointer;transition:border-color .2s,background .2s}
.bt-ba-edits button:hover{border-color:color-mix(in srgb,var(--cyan) 50%,transparent);background:color-mix(in srgb,var(--cyan) 8%,transparent)}
.bt-ba-edits button svg{width:14px;height:14px;color:var(--cyan)}
.bt-hero-shot::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(0,0,0,.35));pointer-events:none}
.bt-price-chip{position:absolute;left:-14px;bottom:22px;z-index:3;padding:14px 20px;border-radius:14px;
  background:color-mix(in srgb,var(--bg-2) 92%,transparent);border:1px solid color-mix(in srgb,var(--lime) 45%,transparent);
  backdrop-filter:blur(12px);box-shadow:0 14px 40px rgba(0,0,0,.5)}
.bt-price-chip .k{font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--lime)}
.bt-price-chip .v{font-size:26px;font-weight:700;letter-spacing:-.02em;margin-top:3px;line-height:1}
.bt-price-chip .v small{font-size:13px;font-weight:500;color:var(--fg-dim)}
@media (max-width:520px){.bt-price-chip{left:12px;bottom:12px;padding:11px 15px}.bt-price-chip .v{font-size:21px}}

/* section heading */
.bt-sec{padding-top:clamp(70px,9vw,120px)}
.bt-sec-kick{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);display:flex;align-items:center;gap:10px}
.bt-sec-kick::before{content:"";width:26px;height:1px;background:var(--cyan)}
.bt-sec-title{font-size:clamp(30px,4.4vw,52px);line-height:1.04;letter-spacing:-.025em;font-weight:600;
  margin:16px 0 0;max-width:20ch;text-wrap:balance}
.bt-sec-title em{font-style:normal;color:var(--cyan)}
.bt-sec-intro{font-size:17px;line-height:1.55;color:var(--fg-dim);margin:16px 0 0;max-width:56ch}

/* problem cards */
.bt-prob{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:40px}
@media (max-width:820px){.bt-prob{grid-template-columns:1fr}}
.bt-prob-card{padding:26px;border-radius:16px;border:1px solid var(--line);background:var(--card);
  position:relative;overflow:hidden}
.bt-prob-card .pn{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--bad);letter-spacing:.1em}
.bt-prob-card h3{font-size:20px;font-weight:600;letter-spacing:-.01em;margin:14px 0 8px;line-height:1.15}
.bt-prob-card p{font-size:14.5px;line-height:1.55;color:var(--fg-dim);margin:0}
.bt-prob-card .xmark{position:absolute;top:22px;right:22px;width:24px;height:24px;border-radius:50%;
  display:grid;place-items:center;background:color-mix(in srgb,var(--bad) 16%,transparent);color:var(--bad)}
.bt-prob-card .xmark svg{width:13px;height:13px}

/* comparison */
.bt-cmp{margin-top:44px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--bg-2)}
.bt-cmp-head{display:grid;grid-template-columns:1.3fr 1fr 1fr}
.bt-cmp-head>div{padding:22px 22px;display:flex;flex-direction:column;gap:6px;justify-content:flex-end}
.bt-cmp-head .h-feat{border-right:1px solid var(--line)}
.bt-cmp-head .h-tv{border-right:1px solid var(--line);color:var(--fg-dim)}
.bt-cmp-head .h-tv .ttl{font-size:17px;font-weight:600;color:var(--fg)}
.bt-cmp-head .h-bt{position:relative;background:linear-gradient(180deg,color-mix(in srgb,var(--cyan) 12%,transparent),transparent)}
.bt-cmp-head .h-bt .ttl{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px}
.bt-cmp-head .h-bt .ttl::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.bt-cmp-head .badge{font-family:"JetBrains Mono",monospace;font-size:9px;letter-spacing:.1em;text-transform:uppercase}
.bt-cmp-head .h-tv .badge{color:var(--bad)}
.bt-cmp-head .h-bt .badge{color:var(--cyan)}
.bt-cmp-row{display:grid;grid-template-columns:1.3fr 1fr 1fr;border-top:1px solid var(--line)}
.bt-cmp-row>div{padding:18px 22px;font-size:14.5px;line-height:1.45}
.bt-cmp-row .c-feat{font-weight:600;border-right:1px solid var(--line);display:flex;align-items:center;gap:10px}
.bt-cmp-row .c-feat svg{width:18px;height:18px;color:var(--cyan);flex-shrink:0}
.bt-cmp-row .c-tv{border-right:1px solid var(--line);color:var(--fg-dim);display:flex;gap:10px;align-items:flex-start}
.bt-cmp-row .c-bt{background:linear-gradient(90deg,color-mix(in srgb,var(--cyan) 7%,transparent),transparent);
  display:flex;gap:10px;align-items:flex-start}
.bt-cmp-row .ico{flex-shrink:0;margin-top:1px}
.bt-cmp-row .c-tv .ico{color:var(--bad)}
.bt-cmp-row .c-bt .ico{color:var(--lime)}
.bt-cmp-row .ico svg{width:16px;height:16px;display:block}
.bt-cmp-foot{border-top:1px solid var(--line);padding:22px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;flex-wrap:wrap;background:var(--card)}
.bt-cmp-foot p{margin:0;font-size:15px;color:var(--fg-dim)}
.bt-cmp-foot p b{color:var(--fg)}
@media (max-width:760px){
  .bt-cmp-head,.bt-cmp-row{grid-template-columns:1fr 1fr}
  .bt-cmp-head .h-feat,.bt-cmp-row .c-feat{grid-column:1 / -1;border-right:0;border-bottom:1px solid var(--line);
    background:var(--card)}
  .bt-cmp-row .c-feat{padding-bottom:10px}
  .bt-cmp-row>div{padding:14px 16px;font-size:13.5px}
}

/* before/after */
.bt-ba{margin-top:42px;position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 26px 70px rgba(0,0,0,.5);aspect-ratio:1200/845;user-select:none;touch-action:pan-y;cursor:default}
.bt-ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.bt-ba image-slot{position:absolute;inset:0;width:100%;height:100%;display:block}
.bt-ba .after-wrap{position:absolute;inset:0;overflow:hidden}
.bt-ba .ba-label{position:absolute;top:16px;z-index:4;font-family:"JetBrains Mono",monospace;font-size:10px;
  letter-spacing:.12em;text-transform:uppercase;padding:7px 12px;border-radius:999px;
  background:rgba(0,0,0,.6);color:#fff;border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(8px);pointer-events:none}
.bt-ba .ba-label.l{left:16px}
.bt-ba .ba-label.r{right:16px;color:var(--cyan);border-color:color-mix(in srgb,var(--cyan) 50%,transparent)}
.bt-ba-handle{position:absolute;top:0;bottom:0;width:3px;background:var(--cyan);z-index:5;
  box-shadow:0 0 18px var(--cyan);transform:translateX(-50%);cursor:ew-resize;touch-action:none}
.bt-ba-knob{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;
  border-radius:50%;background:var(--cyan);color:#012;display:grid;place-items:center;
  box-shadow:0 4px 18px rgba(0,0,0,.5)}
.bt-ba-knob svg{width:22px;height:22px}
.bt-ba-caption{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--fg-dim);margin-top:14px;
  display:flex;align-items:center;gap:8px;letter-spacing:.04em}
.bt-ba-caption svg{width:14px;height:14px;opacity:.6}

/* reasons */
.bt-reasons{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:42px}
@media (max-width:760px){.bt-reasons{grid-template-columns:1fr}}
.bt-reason{padding:30px;border-radius:18px;border:1px solid var(--line);background:var(--card);position:relative;
  overflow:hidden;transition:border-color .3s,transform .4s cubic-bezier(.2,.8,.2,1)}
.bt-reason:hover{border-color:color-mix(in srgb,var(--cyan) 45%,transparent);transform:translateY(-5px)}
.bt-reason .ricon{width:50px;height:50px;border-radius:13px;display:grid;place-items:center;
  background:color-mix(in srgb,var(--cyan) 12%,transparent);color:var(--cyan);
  border:1px solid color-mix(in srgb,var(--cyan) 30%,transparent);margin-bottom:20px}
.bt-reason .ricon svg{width:24px;height:24px}
.bt-reason h3{font-size:22px;font-weight:600;letter-spacing:-.015em;margin:0 0 10px;line-height:1.1}
.bt-reason p{font-size:14.5px;line-height:1.55;color:var(--fg-dim);margin:0}
.bt-reason .apps{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap}
.bt-reason .app{display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:9px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);font-size:12px;font-weight:600}
.bt-root.light .bt-reason .app{background:rgba(0,0,0,.03)}
.bt-reason .app img{height:15px;width:auto}
.bt-reason .big{font-size:40px;font-weight:700;letter-spacing:-.03em;line-height:1;margin:0 0 8px}
.bt-reason .big .unit{color:var(--cyan)}
/* app badge (single Business TV app) */
.bt-appbadge{display:inline-flex;align-items:center;gap:11px;margin-top:18px;padding:9px 14px 9px 9px;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.bt-root.light .bt-appbadge{background:rgba(0,0,0,.03)}
.bt-appbadge img{height:34px;width:34px;border-radius:8px;display:block}
.bt-appbadge .bb{display:flex;flex-direction:column;line-height:1.2}
.bt-appbadge .bb b{font-size:13.5px;font-weight:600}
.bt-appbadge .bb span{font-size:11px;color:var(--fg-dim)}
/* schedule chips inside a reason */
.bt-slots{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.bt-slots .slot{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;
  border:1px solid color-mix(in srgb,var(--cyan) 30%,transparent);background:color-mix(in srgb,var(--cyan) 8%,transparent);
  font-size:12.5px;font-weight:600;color:var(--fg)}
.bt-slots .slot svg{width:13px;height:13px;color:var(--cyan)}

/* sizes */
.bt-sizes{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:42px}
@media (max-width:940px){.bt-sizes{grid-template-columns:repeat(3,1fr)}}
@media (max-width:620px){.bt-sizes{grid-template-columns:repeat(2,1fr)}}
@media (max-width:400px){.bt-sizes{grid-template-columns:1fr}}
.bt-size{position:relative;padding:26px 22px;border-radius:16px;border:1px solid var(--line);background:var(--card);
  overflow:hidden;transition:border-color .3s,transform .4s cubic-bezier(.2,.8,.2,1)}
.bt-size:hover{border-color:color-mix(in srgb,var(--cyan) 50%,transparent);transform:translateY(-5px)}
.bt-size .scr{height:96px;border-radius:7px;border:1.5px solid color-mix(in srgb,var(--cyan) 55%,transparent);
  background:linear-gradient(135deg,color-mix(in srgb,var(--cyan) 16%,transparent),transparent);
  margin:0 auto 20px;display:block;position:relative;overflow:hidden;
  transition:border-color .35s,box-shadow .35s,background .35s}
.bt-size .scr::before{content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,transparent 32%,rgba(255,255,255,.4) 50%,transparent 68%);
  transform:translateX(-130%);transition:transform .75s cubic-bezier(.16,1,.3,1)}
.bt-size:hover .scr{border-color:var(--cyan);
  background:linear-gradient(135deg,color-mix(in srgb,var(--cyan) 36%,transparent),color-mix(in srgb,var(--mag) 14%,transparent));
  box-shadow:0 0 26px color-mix(in srgb,var(--cyan) 45%,transparent),inset 0 0 32px color-mix(in srgb,var(--cyan) 20%,transparent)}
.bt-size:hover .scr::before{transform:translateX(130%)}
@media (prefers-reduced-motion:reduce){.bt-size .scr::before{transition:none}}
.bt-size .din{font-size:34px;font-weight:700;letter-spacing:-.03em;line-height:1}
.bt-size .din span{font-size:16px;font-weight:500;color:var(--fg-dim)}
.bt-size .dim{font-family:"JetBrains Mono",monospace;font-size:11.5px;color:var(--cyan);margin-top:8px;letter-spacing:.02em}
.bt-size .use{font-size:13px;color:var(--fg-dim);margin-top:10px;line-height:1.45}
.bt-sizes-note{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--fg-dim);margin-top:16px;letter-spacing:.03em}

/* carousel (app) */
.bt-carousel{margin-top:42px;display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(20px,3vw,40px);align-items:center}
@media (max-width:860px){.bt-carousel{grid-template-columns:1fr;gap:26px}}
.bt-car-stage{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 26px 70px rgba(0,0,0,.5);aspect-ratio:16/9;background:#0a0a12}
.bt-car-track{position:absolute;inset:0;display:flex;transition:transform .6s cubic-bezier(.16,1,.3,1)}
.bt-car-slide{position:relative;min-width:100%;height:100%}
.bt-car-slide img,.bt-car-slide image-slot{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bt-car-slide .cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px 22px;
  background:linear-gradient(180deg,transparent,rgba(3,3,6,.88));pointer-events:none}
.bt-car-slide .cap .t{font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan)}
.bt-car-slide .cap .n{font-size:18px;font-weight:600;margin-top:4px;color:#fff}
.bt-car-nav{position:absolute;bottom:18px;right:18px;z-index:3;display:flex;gap:8px}
.bt-car-nav button{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.25);
  background:rgba(0,0,0,.5);backdrop-filter:blur(8px);color:#fff;cursor:pointer;display:grid;place-items:center;
  transition:background .2s,border-color .2s}
.bt-car-nav button:hover{background:var(--cyan);color:#012;border-color:var(--cyan)}
.bt-car-nav button svg{width:18px;height:18px}
.bt-car-dots{display:flex;gap:8px;position:absolute;left:18px;bottom:24px;z-index:3}
.bt-car-dots button{width:8px;height:8px;border-radius:50%;border:0;padding:0;cursor:pointer;
  background:rgba(255,255,255,.35);transition:width .3s,background .3s}
.bt-car-dots button.on{width:22px;border-radius:999px;background:var(--cyan)}
.bt-car-copy h3{font-size:clamp(22px,2.4vw,30px);font-weight:600;letter-spacing:-.02em;margin:0 0 14px;line-height:1.12}
.bt-car-feat{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.bt-car-feat .it{display:flex;gap:13px;align-items:flex-start}
.bt-car-feat .it .ci{width:38px;height:38px;border-radius:10px;flex-shrink:0;display:grid;place-items:center;
  background:color-mix(in srgb,var(--cyan) 12%,transparent);color:var(--cyan);border:1px solid color-mix(in srgb,var(--cyan) 28%,transparent)}
.bt-car-feat .it .ci svg{width:19px;height:19px}
.bt-car-feat .it b{font-size:15.5px;font-weight:600;display:block;margin-bottom:3px}
.bt-car-feat .it p{font-size:13.5px;color:var(--fg-dim);line-height:1.5;margin:0}

/* brand marquee */
.bt-marquee{margin-top:34px;position:relative;overflow:hidden;border:1px solid var(--line);border-radius:16px;
  background:var(--card);padding:22px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.bt-marquee-track{display:flex;gap:54px;width:max-content;animation:bt-scroll 32s linear infinite}
.bt-marquee:hover .bt-marquee-track{animation-play-state:paused}
.bt-marquee .lg{font-size:20px;font-weight:600;letter-spacing:.01em;color:var(--fg-dim);white-space:nowrap;
  opacity:.75;transition:opacity .2s,color .2s}
.bt-marquee .lg:hover{opacity:1;color:var(--cyan)}
@keyframes bt-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.bt-marquee-track{animation:none;flex-wrap:wrap;justify-content:center;width:auto;gap:18px 40px;padding:0 20px}}

/* how it works */
.bt-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:42px;counter-reset:step}
@media (max-width:820px){.bt-steps{grid-template-columns:1fr}}
.bt-step{padding:28px;border-radius:16px;border:1px solid var(--line);position:relative;background:var(--bg-2)}
.bt-step .num{font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--cyan);font-weight:600;
  width:38px;height:38px;border-radius:50%;border:1px solid color-mix(in srgb,var(--cyan) 40%,transparent);
  display:grid;place-items:center;margin-bottom:18px}
.bt-step h3{font-size:19px;font-weight:600;margin:0 0 8px;letter-spacing:-.01em}
.bt-step p{font-size:14px;line-height:1.55;color:var(--fg-dim);margin:0}

/* proof */
.bt-proof{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:14px;margin-top:42px}
@media (max-width:820px){.bt-proof{grid-template-columns:1fr 1fr}.bt-proof .pf-tall{grid-column:1 / -1}}
@media (max-width:520px){.bt-proof{grid-template-columns:1fr}}
.bt-pf{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line);min-height:240px;
  background:#0a0a12}
.bt-pf.pf-tall{grid-row:span 2;min-height:auto}
.bt-pf img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;
  transition:transform .6s cubic-bezier(.16,1,.3,1),filter .4s;filter:saturate(.95) brightness(.85)}
.bt-pf:hover img{transform:scale(1.05);filter:saturate(1.15) brightness(1)}
.bt-pf .pf-ov{position:absolute;inset:0;z-index:1;padding:22px;display:flex;flex-direction:column;
  justify-content:flex-end;gap:6px;
  background:linear-gradient(180deg,transparent 40%,rgba(3,3,6,.9))}
.bt-pf .pf-tag{font-family:"JetBrains Mono",monospace;font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan)}
.bt-pf .pf-name{font-size:20px;font-weight:600;letter-spacing:-.01em}
.bt-pf .pf-desc{font-size:13px;color:rgba(255,255,255,.7);line-height:1.45}
.bt-logos{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px 30px;margin-top:34px;
  padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
.bt-logos .lg{font-size:17px;font-weight:600;letter-spacing:.02em;color:var(--fg-dim);opacity:.8;
  transition:opacity .2s,color .2s}
.bt-logos .lg:hover{opacity:1;color:var(--fg)}

/* offer */
.bt-offer{margin-top:46px;border-radius:22px;overflow:hidden;border:1px solid color-mix(in srgb,var(--lime) 35%,transparent);
  background:radial-gradient(120% 100% at 0% 0%,color-mix(in srgb,var(--lime) 14%,transparent),transparent 55%),
    radial-gradient(120% 100% at 100% 100%,color-mix(in srgb,var(--cyan) 12%,transparent),transparent 50%),var(--bg-2);
  display:grid;grid-template-columns:1.1fr 1fr;gap:0}
@media (max-width:820px){.bt-offer{grid-template-columns:1fr}}
.bt-offer-l{padding:clamp(28px,4vw,46px);border-right:1px solid var(--line)}
@media (max-width:820px){.bt-offer-l{border-right:0;border-bottom:1px solid var(--line)}}
.bt-offer-l .k{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--lime)}
.bt-offer-l .price{font-size:clamp(44px,6vw,68px);font-weight:700;letter-spacing:-.03em;line-height:1;margin:14px 0 6px}
.bt-offer-l .price small{display:block;font-size:15px;font-weight:500;color:var(--fg-dim);letter-spacing:0;margin-bottom:8px}
.bt-offer-l .fin{font-size:14px;color:var(--fg-dim);margin:10px 0 0;line-height:1.5}
.bt-offer-l .cta-row{margin-top:26px}
.bt-offer-r{padding:clamp(28px,4vw,46px);display:flex;flex-direction:column;gap:14px;justify-content:center}
.bt-offer-r .ic{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--fg-dim);margin-bottom:4px}
.bt-incl{display:flex;align-items:flex-start;gap:12px;font-size:15px;line-height:1.4}
.bt-incl svg{width:19px;height:19px;color:var(--lime);flex-shrink:0;margin-top:1px}

/* final cta */
.bt-final{margin-top:clamp(70px,9vw,120px);text-align:center;padding:clamp(40px,6vw,72px) 0}
.bt-final h2{font-size:clamp(30px,4.6vw,56px);line-height:1.05;letter-spacing:-.03em;font-weight:600;margin:0 auto;
  max-width:18ch;text-wrap:balance}
.bt-final h2 em{font-style:normal;background:linear-gradient(120deg,var(--cyan),var(--lime));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.bt-final p{font-size:17px;color:var(--fg-dim);margin:18px auto 0;max-width:46ch;line-height:1.55}
.bt-final .cta-row{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:34px}
.bt-contact{display:flex;align-items:center;justify-content:center;gap:10px 26px;flex-wrap:wrap;margin-top:30px;
  font-size:14px;color:var(--fg-dim)}
.bt-contact a{display:inline-flex;align-items:center;gap:8px}
.bt-contact a:hover{color:var(--fg)}
.bt-contact svg{width:15px;height:15px;color:var(--cyan)}

/* footer */
.bt-footer{border-top:1px solid var(--line);margin-top:40px;padding:30px 0 50px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.bt-footer img{height:22px;width:auto}
.bt-footer .fl{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.bt-footer a.back{font-size:13.5px;color:var(--fg-dim);display:inline-flex;align-items:center;gap:7px}
.bt-footer a.back:hover{color:var(--cyan)}
.bt-footer .cr{font-family:"JetBrains Mono",monospace;font-size:10.5px;color:var(--fg-dim);letter-spacing:.06em}

/* sticky mobile cta */
.bt-sticky{position:fixed;left:0;right:0;bottom:0;z-index:48;display:none;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(16px);border-top:1px solid var(--line)}
.bt-sticky a{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:15px;border-radius:13px;
  background:var(--wa);color:#04210f;font-weight:700;font-size:16px}
.bt-sticky svg{width:18px;height:18px}
@media (max-width:760px){.bt-sticky{display:block}.bt-final{padding-bottom:90px}}