.header {
    position: fixed;            /* 상단 고정 */
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background:#000; color:#fff;
    display: flex;              /* 가운데 정렬을 위한 flex */
    flex-direction: column;     /* 수직 방향 배치 */
    justify-content: center;    /* 수직 중앙 정렬 */
    align-items: center;        /* 수평 중앙 정렬 */
    /*box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);*/
    z-index: 1000;
}
.subheader {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 50px;
    background: #000;
    color: #fff;
    z-index: 1000;

    display: flex;
    align-items: center;        /* 수직 가운데 정렬 */
    overflow-x: auto;
}
.subnav {
    display: flex;
    align-items: center;        /* 모든 자식 요소 수직 가운데 정렬 */
    flex-wrap: nowrap;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0 15px;
    gap: 10px;
}

.subnav a {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    flex: 0 0 auto;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    height: 100%;
}

.subnav a:first-of-type {
    margin-left: 5px;
}

.divider {
    color: #ccc;
    padding: 0 5px;
    font-size: 14px;
    flex: 0 0 auto;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    height: 100%;
}

.subnav a:hover {
    text-decoration: underline;
}
.title {
    margin: 0;
    font-size: 20px;
}
.subtitle {
    margin: -3px 0 0 0;
    font-size: 12px;
}

.subheader::-webkit-scrollbar,
.subnav::-webkit-scrollbar {
    display: none;             /* Chrome, Safari, Edge */
}

.subheader,
.subnav {
    -ms-overflow-style: none;  /* IE 10+ */
    scrollbar-width: none;     /* Firefox */
}

body {
    padding-top: 105px; /* header 높이만큼 밀어줌 */
}

.middle_bg {
    width: 100%;
    background: #3e3d3d;
    color:#fff;
    display: flex;              /* 가운데 정렬을 위한 flex */
    justify-content: center;    /* 수직 중앙 정렬 */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    padding: 20px;
    font-size: 14px;
    font-weight: bold;
}

.title-box {
    background-color: #3e3d3d;       /* 배경색 */
    color: #fff;                     /* 텍스트 색상 */
    border-top-left-radius: 0;       /* 좌측은 직선 */
    border-bottom-left-radius: 0;
    border-top-right-radius: 25px;   /* 우측은 둥글게 */
    border-bottom-right-radius: 25px;

    /*display: flex;              !* 가운데 정렬을 위한 flex *!*/

    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    font-size: 20px;
    font-weight: bold;
    margin: 10px 30px 10px 0;
    padding:10px 10px 10px 20px;
}

.content-box {
    padding: 5px 20px 5px 20px;
    background: #fff;
    font-size: 15px;
    /*box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);*/
}

.content-box img {
    width: 80px;
}

.footer {
    width: 100%;
    background: #000;
    color:#fff;
    padding: 20px;
    font-size: 12px;
    margin-top: 10px;
}

.footer a {
    color:#fff;
}

.download-box {
  height: 118px;
}

.img-box {
  width: 97px;
  height: 97px;
  background: url('/images/skai-switch.png') no-repeat center center;
  background-size: cover;
  flex-shrink: 0;
}

.manual-icon-box {
  width: 97px;
  height: 97px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f0f4ff;
  border-radius: 12px;
  flex-shrink: 0;
}

.manual-icon-box i {
  font-size: 48px;
  color: #4a7cff;
}

.manual-thumb {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid #ddd;
  flex-shrink: 0;
}

.manual-item .btn {
  white-space: nowrap;
  flex-shrink: 0;
}

.accordion-button:not(.collapsed) {
  background-color: #3e3d3d;
  color: #fff;
}

.accordion-button:focus {
  box-shadow: none;
}