/* ============================================================
   IMPULSE — единое меню (хедер). Namespaced .impnav.
   Подключается на ВСЕХ страницах одинаково. Стеклянный морфизм,
   sticky, мерцающая точка активного пункта, кастомный курсор,
   мобильное полноэкранное меню с пружинной анимацией.
   ============================================================ */
.impnav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:14px 16px 0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;}
.impnav__bar{height:64px;display:flex;align-items:center;gap:28px;max-width:1160px;margin:0 auto;padding:0 24px;
  border-radius:16px;border:1px solid rgba(255,255,255,.08);
  background:rgba(10,10,15,.6);backdrop-filter:saturate(160%) blur(16px);-webkit-backdrop-filter:saturate(160%) blur(16px);
  box-shadow:0 8px 24px -16px rgba(0,0,0,.6);transition:box-shadow .35s ease,border-color .35s ease,background .35s ease;}
.impnav.scrolled .impnav__bar{box-shadow:0 16px 40px -16px rgba(0,0,0,.75);border-color:rgba(255,255,255,.12);background:rgba(10,10,15,.78);}

.impnav__logo{font-weight:800;font-size:20px;letter-spacing:.06em;color:#fff;text-decoration:none;line-height:1;}

.impnav__links{display:flex;align-items:center;gap:30px;margin-left:auto;}
.impnav__links a{position:relative;font-size:15px;font-weight:600;color:rgba(255,255,255,.74);
  text-decoration:none;border:none;background:none;padding:0;transition:color .25s ease;}
.impnav__links a:hover{color:#fff;}
.impnav__links a.active{color:#fff;padding-left:16px;}
.impnav__links a.active::before{content:"";position:absolute;left:0;top:50%;width:7px;height:7px;margin-top:-3.5px;
  border-radius:50%;background:#06B6D4;box-shadow:0 0 10px 1px rgba(6,182,212,.85);animation:impBlink 1.7s ease-in-out infinite;}
@keyframes impBlink{0%,100%{opacity:.35}50%{opacity:1}}

.impnav__cta{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-size:14px;font-weight:700;
  color:#fff;text-decoration:none;padding:10px 22px;border-radius:12px;border:1.5px solid transparent;
  background-image:linear-gradient(rgba(10,10,15,.55),rgba(10,10,15,.55)),linear-gradient(120deg,#3B82F6,#06B6D4);
  background-origin:border-box;background-clip:padding-box,border-box;
  transition:transform .25s ease,box-shadow .25s ease;}
.impnav__cta:hover{transform:translateY(-1px);box-shadow:0 0 26px -4px rgba(59,130,246,.6);}

.impnav__burger{display:none;width:42px;height:42px;border:none;background:transparent;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:6px;margin-left:auto;}
.impnav__burger span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;
  transition:transform .35s cubic-bezier(.22,.61,.36,1),opacity .25s;}
.impnav__burger.open span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.impnav__burger.open span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}

.impnav__overlay{position:fixed;inset:0;z-index:990;background:rgba(8,8,12,.97);
  -webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);
  display:flex;flex-direction:column;justify-content:center;gap:6px;padding:90px 34px 40px;
  opacity:0;visibility:hidden;transition:opacity .4s ease,visibility .4s ease;}
.impnav__overlay.open{opacity:1;visibility:visible;}
.impnav__overlay a{font-size:32px;font-weight:800;color:#fff;text-decoration:none;padding:12px 0;
  border-bottom:1px solid rgba(120,160,255,.12);transform:translateX(-40px);opacity:0;}
.impnav__overlay.open a{animation:impSlide .55s cubic-bezier(.34,1.56,.64,1) forwards;}
.impnav__overlay.open a:nth-child(1){animation-delay:.05s}
.impnav__overlay.open a:nth-child(2){animation-delay:.12s}
.impnav__overlay.open a:nth-child(3){animation-delay:.19s}
.impnav__overlay.open a:nth-child(4){animation-delay:.26s}
.impnav__overlay.open a:nth-child(5){animation-delay:.33s}
.impnav__overlay.open a:nth-child(6){animation-delay:.40s}
@keyframes impSlide{to{transform:none;opacity:1}}
.impnav__overlay .impnav__cta{align-self:flex-start;margin-top:22px;font-size:18px;border-bottom:none;}

@media(max-width:860px){
  .impnav__links{display:none;}
  .impnav__bar > .impnav__cta{display:none;}
  .impnav__burger{display:flex;}
}