/***************************************************

    共通

***************************************************/

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    color: var(--post-color-font);
}

#fv {
    background-size: cover;
    background-position: center;
}


/***************************************************

    パンくずリスト

***************************************************/

ul.pankuzu {
    padding: 0;
    margin: 20px auto 0;
    width: min(100%, 1000px);
}

ul.pankuzu > li {
    list-style: none;
    margin: 0;
    position: relative;
    display: inline-block;
    padding-right: 24px;
}

ul.pankuzu > li::after {
    position: absolute;
    content: '';
    width: 6px;
    aspect-ratio: 1 / 1;
    top: 50%;
    right: 12px;
    border-right: solid 1.5px var(--post-color-main);
    border-top: solid 1.5px var(--post-color-main);
    transform: rotate(45deg) translateY(-50%);
}

ul.pankuzu > li:last-child:after {
    display: none;
}

ul.pankuzu > li > a {
    text-decoration: none;
    color: var(--post-color-main);
    font-weight: 600;
    font-size: 14px;
    width: fit-content;
    display: block;
    padding: 4px 12px;
}

ul.pankuzu > li:first-child > a {
    padding-left: 0;
}

ul.pankuzu > li > a:hover {
    text-decoration: underline;
}

/***************************************************

    見出し

***************************************************/

h1 {
    color: var(--post-color-main);
}

h2,
h3,
h4 {
    font-family: var(--font-head);
    color: var(--post-color-font);
    font-weight: bold;
    line-height: 1.4;
}

h2 {
    background: var(--post-color-accent);
    padding: 16px 8px;
    margin-top: 2em;
    font-size: 24px;
}

h3 {
    background: linear-gradient(to top, var(--post-color-accent) .4em, transparent .4em);
    padding: 0 1em;
    margin-top: 1.5em;
    width: fit-content;
}

h4 {
    padding-left: 8px;
    position: relative;
    margin-top: 1em;
}

h4::before {
    position: absolute;
    content: '';
    width: 4px;
    height: 1.4em;
    top: 2px;
    left: 0;
    background: var(--post-color-accent);
}

/***************************************************

    本文

***************************************************/

section p {
    max-width: 40em;
    margin: 0 auto;
}

/***************************************************

    画像

***************************************************/

main img {
    display: block;
    width: min(100%, 400px);
    margin: 1em auto;
}

/***************************************************

    レイアウト

***************************************************/

/****************************
画像と本文 横ならび
*/

.imgtxt {
    margin: 3em 0;
}

@media (min-width: 640px) {
    .imgtxt {
        display: flex;
        justify-content: space-evenly;
        gap: 2em;
        align-items: flex-start;
    }  
    
    .imgtxt > img {
        margin: 0;
        width: min(50%, 400px);
    }
}

/****************************
画像2枚 横ならび
*/

.w-imgs {
    margin: 3em 0;
}

@media (min-width: 640px) {
    .w-imgs {
        display: flex;
        justify-content: space-between;
        gap: 4%;
    } 

    .w-imgs > img {
        margin: 0;
        width: min(48%, 500px);
    }
}


/***************************************************

    ギャラリー

***************************************************/

.gallery #main-img {
    width: min(100%, 500px);
    margin: 0 auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;;
    object-position: center;
}

.gallery > ul {
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: .5em;
}

.gallery > ul > li {
    list-style: none;
    cursor: pointer;
}

.gallery > ul > li img {
    margin: 0;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    object-position: center;
    transition: .1s;
}

.gallery > ul > li img:hover {
    transform: scale(1.05);
    opacity: .5;
}

/***************************************************

    ボタン

***************************************************/

.btn1 {
    margin: 24px auto;
}

.btn1 img {
    margin: 0;
}

/***************************************************

    左右レイアウト

***************************************************/

/*********************
    main-article
*********************/

.main-content .main-article {
    width: 100%;
}


/**********************
    side-article
***********************/

.main-content .side-article {
    display: none;
    position: sticky;
    top: 0;
}

.main-content .side-article_head {
    color: var(--post-color-main);
    background: none;
    border-bottom: solid 1px var(--post-color-main);
    margin: 0;
    padding: .5em 0;
}

.main-content .side-article_list {
    padding: 0;
    margin: 0;
}

.main-content .side-article_list > li {
    list-style: none;
    padding: 8px;
    margin: 20px 0;
    background: var(--post-color-sub);
    border-radius: 8px;
    transition: opacity .2s;
}

.main-content .side-article_list > li:hover {
    opacity: .6;
}

.main-content .side-article a {
    text-decoration: none;
    color: var(--post-color-font);
}

.main-content .side-article .con-wr {
    position: relative;
}

.main-content .side-article img {
    width: 100%;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    margin: 0;
    transition: box-shadow 0.2s ease;
}

.main-content .side-article .side-article_tags {
    position: absolute;
    top: 4px;
    right: 4px;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 4px;
    padding: 0;
    margin: 0;
}

.main-content .side-article .side-article_tags > li {
    display: block;
    width: fit-content;
    font-size: 0.75em;
    line-height: 1.2;
    padding: 1px 6px;
    margin: 0;
    list-style: none;
    background: rgb(0 0 0 / .55);
    color: white;
    backdrop-filter: blur(2px);
}


.main-content .side-article .side-article_title {
    margin: .5em 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--post-color-font);
}

.main-content .side-article .article_btn-1 {
    color: var(--post-color-main);
}


@media (min-width: 640px) {
    .main-content {
        display: flex;
        align-items: flex-start;
        gap: min(24px, 4vw, 48px);
        padding: 0 20px;
    }

    .main-content .main-article {
        width: 75%;
    }

    .main-content .side-article {
        display: block;
        width: 25%;
        min-width: 180px;
        height: 100vh;
        overflow-y: scroll;
    }
}