/* HEADER */


/* PC端 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #1a1a1a;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.nav {
  max-width:1200px;
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:15px 20px;
}

/* LOGO */
.logo img {
  height:40px;
  width:auto;
  display:block;
}

.logo {
  order:1;
}

/* MENU */
.menu {
  display:flex;
  align-items:center;
  gap:30px;
  order:2;
}

.menu a {
  text-decoration:none;
  color:#FFFFFF;
  position:relative;
  font-size:18px;
}

.menu a:hover {
  color:#1890ff;
}

/* Dropdown */
.dropdown {
  position:relative;
}

.dropdown::after {
  content:'';
  position:absolute;
  top:100%;
  left:0;
  width:100%;
  height:15px;
}

.dropdown-menu {
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  background:#fff;
  box-shadow:0 8px 20px rgba(0,0,0,0.08);
  border-radius:8px;
  min-width:220px;
  padding:8px 0;

  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:all 0.25s ease;

  z-index:999;
}

.dropdown-menu a {
  display:block;
  padding:10px 18px;
  color:#333;
  font-size:16px;
}

.dropdown-menu a:hover {
  background:#f5f7fa;
  color:#1890ff;
}

.dropdown:hover .dropdown-menu {
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

/* =========================
   ✅ 移动端适配（核心）
   ========================= */
.menu-toggle {
  display:none;
  font-size:28px;
  color:#fff;
  cursor:pointer;
}

/* 手机 */
@media (max-width: 768px) {


  .menu {
    position:absolute;
    top:70px;
    left:0;
    width:100%;
    background:#1a1a1a;

    flex-direction:column;
    align-items:flex-start;
    padding:20px;

    gap:15px;
	order:1;
    display:none; /* 默认隐藏 */
  }

  .menu.active {
    display:flex;
  }

  .menu a {
    font-size:16px;
  }

  /* 下拉菜单改成展开式 */
  .dropdown-menu {
    position:static;
    background:none;
    box-shadow:none;
    transform:none;
    opacity:1;
    visibility:visible;
    padding-left:10px;
    display:none;
  }

  .dropdown.active .dropdown-menu {
    display:block;
  }
  .nav {
  display:flex;
  flex-wrap:nowrap; /* ⭐防止换行 */
  align-items:center;
}

.menu-toggle {
  margin-left:auto; /* ⭐关键 */
  display:block;   /* ⭐ 必须加这个 */
  order:2;
  margin-left:0px;
}
.logo {
    order:3;
    margin-left:auto;
  }
}