:root{
  --ice:#aeefff;
  --ice-bright:#e9fbff;
  --cyan:#4fc3ff;
  --deep:#04070e;
  --navy:#081326;
  --glass:rgba(174,239,255,.08);
  --glass-line:rgba(174,239,255,.22);
  --text:#eaf6ff;
  --muted:#9fc0d6;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--deep);
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow:hidden;
}

/* ---------- HERO ---------- */
.hero{
  position:relative;
  width:100%;
  height:100vh;
  height:100dvh;
  overflow:hidden;
  isolation:isolate;
}

/* ---------- Background crossfade ---------- */
.bg{position:absolute;inset:0;z-index:0;background:#000}
.slide{
  position:absolute;inset:0;
  background-image:var(--img);
  background-size:cover;
  background-position:center 30%;
  opacity:0;
  transform:scale(1.12);
  transition:opacity 1.1s ease;
  will-change:opacity,transform;
}
.slide.is-active{
  opacity:1;
  animation:kenburns 7s ease-out forwards;
}
@keyframes kenburns{
  from{transform:scale(1.16)}
  to{transform:scale(1.02)}
}

/* ---------- Overlays ---------- */
.scrim{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(180deg, rgba(4,7,14,.5) 0%, rgba(4,7,14,.12) 14%, transparent 26%),
    linear-gradient(0deg, rgba(4,7,14,.88) 0%, rgba(4,7,14,.5) 16%, rgba(4,7,14,.12) 32%, transparent 46%);
}
.vignette{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  box-shadow:inset 0 0 150px 6px rgba(2,6,14,.42);
}
.snow{position:absolute;inset:0;z-index:2;pointer-events:none}

/* ---------- White flash ---------- */
.flash{
  position:absolute;inset:0;z-index:5;pointer-events:none;
  background:radial-gradient(circle at 50% 45%, #ffffff 0%, #eaf9ff 55%, #cfeeff 100%);
  opacity:0;
}
.flash.is-flash{animation:flash 760ms ease-out}
@keyframes flash{
  0%{opacity:0}
  14%{opacity:1}
  100%{opacity:0}
}

/* ---------- Top bar ---------- */
.topbar{
  position:absolute;top:0;left:0;right:0;z-index:10;
  display:flex;align-items:center;justify-content:space-between;
  padding:clamp(16px,3vw,28px) clamp(18px,4vw,46px);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.brand-mark{
  font-size:20px;color:var(--ice);
  filter:drop-shadow(0 0 10px rgba(120,210,255,.8));
  animation:spin 14s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.brand-name{
  font-family:'Anton',sans-serif;letter-spacing:3px;font-size:20px;
}
.ca-chip{
  display:flex;align-items:center;gap:8px;cursor:pointer;
  padding:9px 13px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-line);
  color:var(--ice);font:600 12px/1 'Inter',sans-serif;letter-spacing:1px;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .15s ease, border-color .2s ease, background .2s ease;
}
.ca-chip:hover{transform:translateY(-1px);border-color:var(--cyan);background:rgba(79,195,255,.14)}
.ca-label{opacity:.7}
.ca-value{color:var(--text);font-weight:700}
.ca-copy{opacity:.7}

/* ---------- Center content ---------- */
.content{
  position:absolute;inset:0;z-index:8;
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  padding:clamp(18px,3.4vw,46px);
  padding-bottom:clamp(22px,3.6vw,48px);
  pointer-events:none;
}
.content>*{pointer-events:auto}
.hud-left{display:flex;flex-direction:column;align-items:flex-start;text-align:left;max-width:min(64vw,760px)}
.hud-right{display:flex;flex-direction:column;align-items:flex-end;gap:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font:700 12px/1 'Inter',sans-serif;letter-spacing:4px;
  color:var(--ice);text-transform:uppercase;
  padding:8px 16px;border-radius:999px;
  background:rgba(8,19,38,.45);border:1px solid var(--glass-line);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  margin-bottom:clamp(14px,2.4vw,22px);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{50%{opacity:.3}}

.title{
  font-family:'Anton',sans-serif;
  font-size:clamp(58px,10vw,150px);
  line-height:.82;letter-spacing:2px;
  color:var(--ice);
  text-shadow:0 3px 26px rgba(4,10,22,.8), 0 0 26px rgba(120,210,255,.55);
  position:relative;
}
.tagline{
  margin-top:clamp(4px,1vw,10px);
  font-family:'Anton',sans-serif;
  font-size:clamp(15px,2.9vw,37px);
  letter-spacing:clamp(2px,.7vw,7px);
  color:var(--ice);
  text-shadow:0 2px 18px rgba(4,10,22,.75), 0 0 20px rgba(120,210,255,.5);
}
.sub{
  margin:clamp(16px,2.4vw,24px) auto 0;
  max-width:540px;
  font-size:clamp(14px,1.5vw,16px);line-height:1.6;
  color:var(--muted);
}

/* ---------- Buttons ---------- */
.cta{
  display:flex;flex-direction:column;align-items:stretch;gap:12px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;
  padding:9px 20px;border-radius:999px;
  font:600 11.5px/1 'Inter',sans-serif;letter-spacing:1.6px;text-transform:uppercase;
  text-decoration:none;color:var(--ice-bright);
  background:rgba(174,239,255,.055);
  border:1px solid rgba(174,239,255,.2);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .16s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease, color .2s ease;
}
.btn:hover{
  transform:translateY(-2px);
  border-color:var(--cyan);
  background:rgba(79,195,255,.12);
  box-shadow:0 8px 22px rgba(40,140,220,.26), 0 0 16px rgba(79,195,255,.2);
}
.btn:active{transform:translateY(0)}
.btn-x:hover{border-color:rgba(255,255,255,.85);background:rgba(255,255,255,.1)}
.btn-pump:hover{border-color:#74e3a3;background:rgba(116,227,163,.12);box-shadow:0 8px 22px rgba(60,200,130,.26),0 0 16px rgba(116,227,163,.2)}

/* ---------- Slide dots ---------- */
.dots{display:flex;gap:9px;margin-top:2px}
.dot-btn{
  width:30px;height:4px;border-radius:99px;border:0;cursor:pointer;
  background:rgba(174,239,255,.28);transition:background .25s ease,width .25s ease;
}
.dot-btn.is-active{background:var(--ice);width:46px;box-shadow:0 0 12px rgba(120,210,255,.8)}

.scroll-cue{
  position:absolute;left:0;right:0;bottom:clamp(14px,2.4vw,22px);z-index:8;
  text-align:center;font:600 11px/1 'Inter',sans-serif;letter-spacing:3px;
  text-transform:uppercase;color:var(--muted);opacity:.8;
}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);
  z-index:30;padding:11px 20px;border-radius:12px;
  background:rgba(8,19,38,.9);border:1px solid var(--glass-line);color:var(--ice);
  font:700 13px/1 'Inter',sans-serif;letter-spacing:.5px;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transition:opacity .25s ease, transform .25s ease;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- Responsive ---------- */
@media (max-width:760px){
  .content{flex-direction:column;align-items:stretch;justify-content:flex-end;gap:16px}
  .hud-left{max-width:none}
  .hud-right{align-items:stretch}
  .cta{flex-direction:row;flex-wrap:wrap}
  .btn{flex:1 1 30%;min-width:0;justify-content:center;padding:9px 10px}
  .dots{justify-content:center}
  .scrim{
    background:
      linear-gradient(180deg, rgba(4,7,14,.4) 0%, transparent 22%),
      linear-gradient(0deg, rgba(4,7,14,.92) 0%, rgba(4,7,14,.55) 30%, transparent 62%);
  }
}

@media (max-width:560px){
  .slide{background-position:center 26%}
  .btn{padding:8px 8px;font-size:10px;letter-spacing:1px}
  .cta{gap:8px}
  .ca-chip .ca-label{display:none}
}

@media (prefers-reduced-motion:reduce){
  .slide.is-active{animation:none}
  .flash.is-flash{animation-duration:300ms}
  .brand-mark{animation:none}
}