/* base style */
html {
    font-family: "Noto Sans JP", sans-serif;
    /* 1920pxの時に15px */
    font-size: 20px;
}
.sp {
    display: none;
}
body {
    width: 100%;
}
/* header style */
header {
    width: 70%;
    max-width: 1500px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    box-sizing: border-box;
    padding: 2rem 0 1rem;
    border-bottom: 2px solid #000;
    background: #fff;
}
header a {
    display: block;
    width: 100%;
}
h1 {
    display: block;
    width: 10%;
}
/* main style */
main {
    width: 70%;
    max-width: 1500px;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 8rem 0rem 5rem;
}
section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 3rem;
}
h2 {
    font-size: 1.6rem;
    line-height: 1.5;
    font-weight: 600;
    display: flex;
    flex-direction: row;
    align-items: center;
}
h2 > span {
    font-size: 1rem;
    font-weight: 400;
    margin-left: 0.5rem;
}
h3 {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}
.mb45 {
    margin-bottom: 3rem;
}
img {
    width: 100%;
}
p {
    font-size: 1rem;
    line-height: 1.8;
}
p.date {
    text-align: right;
    margin-bottom: 3rem;
}
span {
    font-size: 0.8rem;
    line-height: 1.3;
    text-align: center;
    margin-top: 0.3rem;
}
.img_box {
    width: 100%;
    align-self: center;
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.img_box > img {
    width: 60%;
}
.img_box.long {
    margin-top: 8rem;
    align-items: flex-start;
}
.img_box.medium > img {
    width: 25%;
}
.img_box p {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.img_box.medium > p {
    margin-top: 2rem;
}
span.sm {
    font-size: 0.6rem;
    margin-top: 0.5rem;
}
.img_list {
    width: 100%;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
}
.img_list > li {
    width: 15%;
}
/* cta style */
.cta {
    position: fixed;
    bottom: 5rem;
    left: 1rem;
}
.cta a {
    font-size: 1rem;
    writing-mode: vertical-rl;
    position: relative;
    color: #cebb52;
}
.cta a::before,
.cta a::after {
    content: "▲";
    position: absolute;
    font-size: 0.8em;
    color: #cebb52;
}
.cta a::before {
    left: 0;
    bottom: -2rem;
}
.cta a::after {
    left: 0;
    bottom: -3rem;
}



/* スマホ */
@media (max-width: 768px) {
    .sp {
        display: block;
    }
    .pc {
        display: none;
    }
    /* base style */
    html {
        /* 768pxの時に15px */
        font-size: 2.3vw;
    }
    body {
        width: 100%;
    }
    /* header style */
    header {
        width: 90%;
        max-width: 750px;
        border-bottom: 1px solid #000;
    }
    header a {
        display: block;
        width: 100%;
    }
    h1 {
        display: block;
        width: 20%;
    }
    /* main style */
    main {
        width: 90%;
        max-width: 750px;
    }
    section {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 3rem;
    }
    h2 {
        font-size: 2rem;
        line-height: 1.5;
        font-weight: 600;
        flex-direction: column;
        align-items: flex-start;
    }
    h2 > span {
        font-size: 1.6rem;
    }
    h3 {
        font-size: 1.6rem;
    }
    p {
        font-size: 1.6rem;
    }
    span {
        font-size: 1rem;
        margin-top: 0.5rem;
    }
    .img_box > img {
        width: 90%;
    }
    .img_box.long {
        margin-top: 5rem;
    }
    .img_box.medium > img {
        width: 30%;
    }
    span.sm {
        font-size: 0.8rem;
        margin-top: 0.3rem;
    }
    .img_list > li {
        width: 18%;
    }
    /* cta style */
    .cta {
        bottom: 5rem;
        left: 0.5rem;
    }
    .cta a {
        font-size: 1rem;
    }
    .cta a::before,
    .cta a::after {
        font-size: 1rem;
        left: -0.2rem;
    }
}