.sa-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 150px;
  pointer-events: none;
}
.sa-header-inner {
  position: relative;
  height: 100%;
  padding: 0 clamp(20px, 5.5vw, 120px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(16px, 3vw, 48px);
}
.sa-header-inner > * { pointer-events: auto; }

.sa-logo {
  flex: 0 0 auto;
  width: clamp(72px, 7.8vw, 112px);
  height: auto;
}
.sa-logo img {
  width: 100%;
  height: auto;
  display: block;
}

.sa-nav {
  flex: 0 1 991px;
  min-width: 0;
  height: clamp(52px, 5.5vw, 71px);
  background: rgba(255, 255, 255, 0.43);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 clamp(20px, 3vw, 60px);
}
.sa-nav-item {
  font-family: var(--sc-font);
  font-weight: 700;
  font-size: clamp(13px, 1.4vw, 24px);
  letter-spacing: .02em;
  color: #fff;
  white-space: nowrap;
  transition: opacity .15s;
}
.sa-nav-item:hover { opacity: .75; }

.sa-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.sa-nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2.5px;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s, opacity .2s;
}
.sa-nav-toggle.is-open .sa-nav-toggle__bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.sa-nav-toggle.is-open .sa-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.sa-nav-toggle.is-open .sa-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

@media (max-width: 760px) {
  .sa-header { height: auto; padding: 18px 0 0; }
  .sa-header-inner {
    padding: 0 18px;
    align-items: center;
  }
  .sa-logo {
    width: 74px;
    display: flex;
    align-items: center;
  }

  .sa-nav-toggle {
    display: flex;
    height: 56px;
    width: 40px;
  }
  .sa-nav-toggle__bar {
    width: 28px;
    height: 3px;
  }

  .sa-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 18px;
    right: 18px;
    flex-direction: column;
    align-items: stretch;
    height: auto;
    padding: 16px 8px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 6px 24px rgba(0, 0, 0, .14);
    gap: 4px;
    transform-origin: top right;
    transform: scale(.95) translateY(-6px);
    opacity: 0;
    visibility: hidden;
    transition: transform .2s ease, opacity .2s ease, visibility 0s linear .2s;
  }
  .sa-nav.is-open {
    transform: scale(1) translateY(0);
    opacity: 1;
    visibility: visible;
    transition: transform .25s ease, opacity .2s ease;
  }
  .sa-nav-item {
    display: block;
    font-size: 16px;
    color: var(--sc-blue);
    padding: 12px 18px;
    border-radius: 999px;
    text-align: center;
    letter-spacing: .04em;
  }
  .sa-nav-item:hover { background: rgba(0, 169, 227, .08); opacity: 1; }
}