body {
  margin: 0;
  font-family: "Montserrat", Arial, sans-serif;
  background: #f7f7fa;
}
.main-header {
  background: linear-gradient(120deg, #212d3a 0%, #414345 100%);
  color: #fff;
  box-shadow: 0 2px 8px rgba(35, 37, 38, 0.07);
  position: sticky;
  top: 0;
  z-index: 100;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 91px;
}
.logo {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
}
.nav {
  display: flex;
}
.nav-list {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  font-size: 1.08rem;
  transition: color 0.2s;
  position: relative;
}
.nav-list a::after {
  content: "";
  display: block;
  width: 0;
  height: 2px;
  background: #e0b973;
  transition: width 0.3s;
  position: absolute;
  left: 0;
  bottom: -4px;
}
.nav-list a:hover::after {
  width: 100%;
}
.nav-list a:hover {
  color: #e0b973;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  outline: none;
  padding: 0;
  height: 40px;
  width: 40px;
  align-items: center;
  justify-content: center;
}
.hamburger {
  width: 28px;
  height: 3px;
  background: #fff;
  display: block;
  position: relative;
  transition: all 0.3s;
  margin: 0 auto;
}
.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 28px;
  height: 3px;
  background: #fff;
  transition: all 0.3s;
}
.hamburger::before {
  top: -9px;
}
.hamburger::after {
  top: 9px;
}
@media (max-width: 900px) {
  .container {
    padding: 0 2vw;
  }
  .nav-list {
    gap: 1.2rem;
  }
}
@media (max-width: 700px) {
  .container {
    height: 60px;
  }
  .logo img {
    height: 40px !important;
    max-width: 90vw;
    aspect-ratio: 3.3/1;
    margin: 0 auto;
    display: block;
  }
  .nav {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: #212d3a;
    transform: translateY(-200%);
    transition: transform 0.3s;
    z-index: 99;
  }
  .nav.open {
    transform: translateY(0);
  }
  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 0;
  }
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}