/* 汉堡按钮 - 默认隐藏，手机显示 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 200;
  padding: 10px;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    display: none !important;
    position: fixed;
    top: 0; right: 0;
    width: 260px; height: 100vh;
    background: #0F1F38;
    flex-direction: column;
    padding: 80px 32px 32px;
    z-index: 150;
    border-left: 1px solid rgba(0,212,255,0.12);
  }
  .nav-links.open { display: flex !important; }
  .nav-links a { font-size: 16px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
}