body {
    margin: 0;
    padding: 0;
    font-family: 游ゴシック体, YuGothic, "游ゴシック Medium", "Yu Gothic Medium", 游ゴシック, "Yu Gothic", sans-serif;
}
img {
    vertical-align: top;
}
header {
    padding: 20px 0;
	text-align: center;
}
footer {
    margin-top: 60px;
    padding: 20px 0;
	text-align: center;
    font-size: smaller;
    border-top: 1px solid #e2e2e2;
}
h1 {
    margin: 0;
	padding: 0.75em;
	text-align: center;
    font-size: min(24px, 5vw);
	font-weight: normal;
	background-color: #37657c;
	color: #ffffff;
}
h2 {
    padding: 0 1em;
	text-align: center;
}
h3 {
    padding: 0 1em;
	text-align: center;
}
p {
    padding: 0 1em;
	text-align: center;
    &.error-message {
        color: #c61423;
    }
}
input[type="text"] {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    padding: 0.5em;
    width: min(20em, 90%);
    font-size: 24px;
    font-weight: 700;
}

.bundle-select {
    margin-top: 40px;
    a {
        position: relative;
        display: block;
        max-width: 600px;
        margin: 0 auto;
        padding: 1em min(2.5em, 10vw) 1em min(2.5em, 5vw);
        font-size: clamp(14px, 2.5vw, 18px);
        line-height: 1.5;
        text-align: center;
        text-decoration: none;
        color: #333333;
        border-bottom: 1px solid #cccccc;
        cursor: pointer;
        &::after {
            content: "";
            position: absolute;
            top: 50%;
            right: 1em;
            width: 0.5em;
            aspect-ratio: 1;
            border-top: 2px solid #666666;
            border-right: 2px solid #666666;
            transform: translateY(-50%) rotate(45deg);
        }
        &:first-child {
            border-top: 1px solid #cccccc;
        }
        &:hover {
            color: #0d0d0d;
            background-color: #fafafa;
        }
    }
}
.bundle-form {
    button {
        display: block;
        width: 320px;
        margin: 20px auto;
        padding: 0.75em 0;
        font-size: 18px;
        font-family: 游ゴシック体, YuGothic, "游ゴシック Medium", "Yu Gothic Medium", 游ゴシック, "Yu Gothic", sans-serif;
        text-align: center;
        background-color: #c61423;
        color: #ffffff;
        border-width: 0;
        cursor: pointer;
        &.back {
            background-color: #37657c;
        }
        &:hover {
            opacity: 0.8;
        }
    }
}
.shop-back {
    margin-top: 40px;
    a {
        display: inline-block;
        width: 320px;
        padding: 0.75em 0;
        font-size: 18px;
        text-decoration: none;
        background-color: #666666;
        color: #ffffff;
        &:hover {
            opacity: 0.8;
        }
    }
}
.shop-info {
    width: min(600px, 90%);
    margin: 1em auto;
    padding: 0.5em 0;
    font-size: 20px;
    font-weight: 700;
    border: 1px solid #333333;
    p {
        margin: 20px 0;
        line-height: 1.25;
    }
    b {
        margin-right: 2px;
        font-size: 250%;
        color: #c61423;
    }
}
.serial-info {
    width: 90%;
    max-width: fit-content;
    margin: 4em auto 1em;
    padding: 0.5em 0;
    border: 1px solid #cccccc;
}



br.sp {
    display: none;
}
@media only screen and (max-width: 767px) {
    br.sp {
        display: inline;
    }
}