:root{
  --intro-bg:#0a0a0a;
  --intro-ink:#f2ece2;
  --intro-muted:#8a8478;
  --intro-orange:#ff7a1a;
  --intro-orange-deep:#c85a0a;
  --intro-orange-light:#ffb36b;
}

body.intro-active{overflow:hidden}

#intro{
  position:fixed;inset:0;z-index:9999;background:var(--intro-bg);
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  transition:opacity .7s ease;
}
#intro.done{opacity:0;pointer-events:none}

.intro-stage{
  position:relative;width:100%;height:100%;
  display:flex;align-items:center;justify-content:center;
}

.intro-grain{
  position:absolute;inset:-5%;pointer-events:none;opacity:.08;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/></svg>");
}

/* Замок */
.intro-lock{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  pointer-events:none;
}
.intro-lock svg{
  width:min(80vmin,760px);height:min(80vmin,760px);opacity:.26;
}
.cyl-rotor{transform-origin:400px 400px;animation:introRotateSlow 16s linear infinite}
@keyframes introRotateSlow{to{transform:rotate(360deg)}}

.intro-pin{transform-origin:center;animation:introPinDance 1.8s ease-in-out infinite}
.intro-pin:nth-child(1){animation-delay:0s}
.intro-pin:nth-child(2){animation-delay:.18s}
.intro-pin:nth-child(3){animation-delay:.36s}
.intro-pin:nth-child(4){animation-delay:.54s}
.intro-pin:nth-child(5){animation-delay:.72s}
@keyframes introPinDance{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-16px)}
}
#intro.unlocked .intro-pin{animation-play-state:paused;transform:translateY(0)}
#intro.unlocked .cyl-rotor{animation:introTurnOpen 1s cubic-bezier(.7,0,.3,1) forwards}
@keyframes introTurnOpen{to{transform:rotate(92deg)}}

/* Центр */
.intro-core{
  position:relative;z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:26px;
  width:100%;padding:0 24px;
}

.intro-eyebrow{
  font-size:clamp(9px,1vw,11px);letter-spacing:.38em;color:var(--intro-muted);
  text-transform:uppercase;display:flex;align-items:center;gap:clamp(10px,1.3vw,14px);
  font-family:'Manrope',system-ui,sans-serif;
}
.intro-eyebrow .intro-dash{width:clamp(18px,2vw,26px);height:1px;background:var(--intro-orange)}
.intro-eyebrow .intro-label{min-width:clamp(180px,26vw,240px);text-align:center}

.intro-headline{
  font-family:'Manrope',system-ui,sans-serif;font-weight:300;
  font-size:clamp(22px,4.5vw,44px);
  letter-spacing:.14em;text-transform:uppercase;line-height:1;margin:0;
  color:var(--intro-ink);white-space:nowrap;
}
.intro-headline .intro-dots{
  display:inline-block;margin-left:.15em;color:var(--intro-orange);font-weight:400;
}

/* Прогресс */
.intro-progress-wrap{
  width:min(540px,72vw);order:-1;
}
.intro-progress-meta{
  display:flex;justify-content:space-between;align-items:baseline;
  font-size:clamp(9px,.9vw,10px);letter-spacing:.3em;color:var(--intro-muted);
  text-transform:uppercase;margin-bottom:10px;
  font-family:'Manrope',system-ui,sans-serif;
}
.intro-progress-meta .intro-pct{color:var(--intro-orange);font-weight:500;font-variant-numeric:tabular-nums}
.intro-progress-track{position:relative;height:1px;background:rgba(242,236,226,.12);overflow:hidden}
.intro-progress-fill{
  position:absolute;top:0;left:0;bottom:0;width:0%;
  background:linear-gradient(to right,var(--intro-orange-deep),var(--intro-orange),var(--intro-orange-light));
  transition:width .12s linear;
}
.intro-progress-fill::after{
  content:"";position:absolute;top:-2px;right:0;width:2px;height:5px;
  background:var(--intro-orange-light);box-shadow:0 0 8px var(--intro-orange);
}

.intro-tumblers{display:flex;gap:clamp(7px,1vw,10px);margin-top:6px;justify-content:center}
.intro-tumblers i{
  display:block;width:clamp(8px,1vw,10px);height:clamp(16px,2vw,20px);
  background:rgba(242,236,226,.05);border:1px solid rgba(255,122,26,.22);
  transition:background .3s,transform .3s,border-color .3s;
  font-style:normal;
}
.intro-tumblers i.set{
  background:linear-gradient(180deg,var(--intro-orange-light),var(--intro-orange-deep));
  border-color:var(--intro-orange);transform:translateY(-2px);
  box-shadow:0 2px 0 rgba(0,0,0,.5),0 0 10px rgba(255,122,26,.4);
}

/* Углы */
.intro-corner{
  position:absolute;font-size:clamp(8px,.9vw,10px);letter-spacing:.28em;
  color:var(--intro-muted);text-transform:uppercase;
  padding:clamp(14px,2vw,26px) clamp(16px,2.2vw,32px);
  font-family:'Manrope',system-ui,sans-serif;
}
.intro-corner.tl{top:0;left:0}
.intro-corner.tr{top:0;right:0;text-align:right}
.intro-corner.bl{bottom:0;left:0}
.intro-corner.br{bottom:0;right:0;text-align:right}
.intro-corner .intro-dot{
  display:inline-block;width:6px;height:6px;background:var(--intro-orange);border-radius:50%;
  margin-right:8px;vertical-align:middle;box-shadow:0 0 8px var(--intro-orange);
  animation:introBlink 1.2s steps(2) infinite;
}
@keyframes introBlink{50%{opacity:.3}}

@media (max-width:640px){
  .intro-lock svg{opacity:.22}
  .intro-corner.tl b,.intro-corner.bl b{display:none}
}