/*
body {
    font-family: 'Kosugi Maru', "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
}
*/

.nav-link {
    font-weight: bold;
}

.breadcrumb-item {
    font-weight: bold;
}

.card-header {
    font-weight: bold;
}

.copyright {
    font-family: "Helvetica Neue", Arial, sans-serif;
}

.youtube-video {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* = height ÷ width × 100 */
}
.youtube-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}


.stepper-wrapper {
     margin-top: auto;
     display: flex;
     justify-content: space-between;
     margin-bottom: 20px;
 }
.stepper-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.stepper-item::before {
    position: absolute;
    content: "";
    border-bottom: 2px solid #ccc;
    width: 100%;
    top: 20px;
    left: -50%;
    z-index: 2;
}

.stepper-item::after {
    position: absolute;
    content: "";
    border-bottom: 2px solid #ccc;
    width: 100%;
    top: 20px;
    left: 50%;
    z-index: 2;
}

.stepper-item .step-counter {
    position: relative;
    z-index: 5;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #ccc;
    margin-bottom: 6px;
}

.stepper-item.active {
    font-weight: bold;
}

.stepper-item.completed .step-counter {
    background-color: #4bb543;
}

.stepper-item.completed::after {
    position: absolute;
    content: "";
    border-bottom: 2px solid #4bb543;
    width: 100%;
    top: 20px;
    left: 50%;
    z-index: 3;
}

.stepper-item:first-child::before {
    content: none;
}
.stepper-item:last-child::after {
    content: none;
}