.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1000;
  min-height:74px;
  background:rgba(0,0,0,.0);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.90);
}

.header-inner{
  min-height:74px;
  display:flex;
  align-items:center;
  gap:12px;
  position:relative;
  flex-wrap:nowrap;
}

.logo{
  flex:0 0 auto;
  display:flex;
  align-items:center;
}

.logo img{
  width:170px;
  height:65px;
  object-fit:contain;
}

.main-nav{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  align-items:center;
  gap:22px;
  white-space:nowrap;
}

.main-nav a{
  font-size:20px;
  font-weight:900;
}

.main-nav a:hover,
.mobile-nav a:hover{
  color:#ff4d2d;
}

.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

.header-btn{
  min-width:124px;
  padding:10px 16px;
  background:linear-gradient(180deg,#ff4d4d 0%,#c80000 100%);
  box-shadow:0 8px 18px rgba(0,0,0,.25);
  font-size:14px;
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  font-weight:700;
  border:0;
  cursor:pointer;
  color:#fff;
  text-decoration:none;
}

.burger{
  display:none;
  border:0;
  background:transparent;
  color:#fff;
  font-size:30px;
  cursor:pointer;
  line-height:1;
  z-index:1002;
}

.mobile-nav{
  display:none;
  position:absolute;
  top:74px;
  left:0;
  width:30%;
  background:rgba(0,0,0,.4);
  backdrop-filter:blur(8px);
  border-bottom:1px solid rgba(255,255,255,.12);
  padding:12px 16px;
  flex-direction:column;
  gap:12px;
  z-index:1001;
}

.mobile-nav.open{
  display:flex;
}

.mobile-nav a{
  font-size:16px;
  font-weight:700;
  color:inherit;
  text-decoration:none;
}

@media (max-width:900px){
  .site-header{
    min-height:64px;
  }

  .header-inner{
    min-height:64px;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    padding:6px 0;
  }

  .logo,
  .main-nav{
    display:none;
  }

  .header-actions{
    order:1;
    margin-left:auto;
    gap:8px;
  }

  .header-btn{
    min-width:0;
    padding:8px 12px;
    font-size:12px;
  }

  .burger{
    order:2;
    display:block;
  }

  .mobile-nav{
    top:64px;
  }
}

@media (max-width:480px){
  .header-actions{
    gap:6px;
  }

  .header-btn{
    padding:7px 10px;
    font-size:11px;
  }
}