.mb-header-wrapper {
  background-color: #178CA4;
  height: 60px; /* ✅ 這裡固定高度 */
}

header {
  background-color: #178CA4;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  position: relative;
  height: 60px;
  box-sizing: border-box;
  z-index: 999;
  position: sticky; /* 或 fixed / relative */
  top: 0;
  background-image: url("/images/mb-gina-logo-member.png");
  background-repeat: no-repeat, repeat;
  background-size: 131px 58px;
}

.logo {
  width: 132px;   
  height: 60px;
}

.logo a {
  text-decoration: none;
  display: inline-block;
  color:transparent;
  height: 60px;
  line-height: 60px;
  font-size: 1.4rem;
}

.right-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn-register {
  background: transparent;
  border: solid 1px #f7fdfa;
  color: rgb(243, 246, 253);
  padding: 1px 10px;
  border-radius: 36px;
  cursor: pointer;
  font-size: 1rem;
}
.btn-menu {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.side-menu {
  position: fixed;
  top: 0;
  left: -260px;
  width: 220px;
  height: 100%;
  background-color: #fff;
  box-shadow: 2px 0 6px rgba(0, 0, 0, 0.15);
  padding: 20px;
  transition: left 0.3s ease;
 z-index: 9999; 
}
.side-menu.open {
  left: 0;
}
.side-menu h2 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: 1.35rem;
  color: #5a5a5a;
}
.side-menu a {
  display: block;
  padding-bottom: 16px;
  padding-top: 16px;
  text-decoration: none;
  color: #525252;
  font-weight: bold;
  font-size: 1.15rem;
  border-bottom: 1px solid #ddd;
}
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 999;
  background: transparent;
  display: none;
}
.overlay.active {
  display: block;
}