/* ヘッダー */
#head {
  border-top: solid #666666 2px;
  background-color: #ffffff;
  width: 990px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header_left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header_chat {
  margin-left: 220px;
}

/* --- ナビゲーション共通クラス --- */
.nav_wrapper {
  margin-bottom:10px; 
  width:990px;
}

.nav_frame {
  padding: 0.5em;
  margin: 2px 0;
  color: white !important;
  background: linear-gradient(to bottom, #B0C1D9, #012169);
  font-weight: bold;
  font-size: 13px;
  border-radius: 3px;
  text-align: center;
  text-decoration: none !important;
  width: 146px;
  height: 34px;
  border: 0.5px solid gray;
  position: relative;
  z-index: 1;
}

.nav_frame.disabled {
  background: #929292;
  pointer-events: none;
  cursor: default;
}

.nav_frame.disabled .text {
    display: none;
}

.nav_frame_bg {
  content: "";
  position: absolute;
  top: 1px;   
  left: 2px;
  width: 192px;
  height: 45px;
  background-color: transparent; 
  z-index: 0;
}

.nav_frame_item {
  content: "";
  position: absolute;
  top: 1px;   
  left: 2px;
  width: 192px;
  height: 45px;
  z-index: 0;
}

.nav_frame_link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
}

.nav_frame .text {
  display: inline-block;
  color: white;
  position: relative;
  margin-top: 10px;
  z-index: 1;
}

.nav_frame:hover .text {
  color:#012169;
}

.nav_frame_bg:hover {
  background: linear-gradient(to bottom, #ffffff, #E4E9F1);
}

.nav_frame .drop {
  width:192px;
  display:none;
  color:#012169;
  background: linear-gradient(to bottom, #E4E9F1, #CAD4E3, #94A8C7);
  z-index:10;
  position:absolute;
  top: 100%;
  left: 0;
  margin:0px;
  padding:0px;
  border: 1px solid black;
}
.nav_frame .drop a,
.nav_frame .drop a:visited {
  color:#012169;
}

.nav_frame:hover .drop {
  display:block;
  top:45px;
  left:1px;
}

.drop ul {
  padding: 0px;
}

.nav_frame .drop ul li {
  list-style: none;
  margin-left: 10px;
  margin-bottom: 5px;
  border-bottom: 1px solid #000000;
  padding: 4px 0;
}

.nav_frame .drop ul li::before {
  content: "";
  display: inline-block;
  margin-top: 3px;
  width: 10px;
  height: 10px;
  background: url("/image/icon/triangle_arrow_off.png") no-repeat;
  background-size: contain;
}

.nav_frame .drop ul li:hover::before {
  background: url("/image/icon/triangle_arrow_on.png") no-repeat;
  background-size: contain;
}

.nav_frame .drop ul li:hover {
  color: #0097FF;
}

.nav_frame .drop ul li a:hover {
  color: #0097FF;
}