/* =============================================
   お知らせ記事ページ 専用スタイル
   ============================================= */
.art-hero {
    padding-top: clamp(100px,14vw,150px);
}
.art-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.art-date {
    font-size: .72rem;
    color: var(--ash);
    letter-spacing: .08em;
}
.art-title {
    font-size: clamp(1.4rem,3.5vw,2.6rem);
    font-weight: 900;
    letter-spacing: -.025em;
    line-height: 1.2;
}
.art-wrap {
    padding: clamp(48px,6vw,80px) 0;
}
.art-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: clamp(40px,5vw,64px);
    align-items: start;
}
.art-body p {
    font-size: .88rem;
    color: var(--fog);
    line-height: 1.95;
    margin-bottom: 1.4em;
}
.art-body h2 {
    font-size: clamp(1rem,1.5vw,1.3rem);
    font-weight: 800;
    margin: 2em 0 .8em;
    padding-left: 14px;
    border-left: 3px solid var(--fire);
}
.art-body h3 {
    font-size: 1rem;
    font-weight: 800;
    margin: 1.5em 0 .6em;
    color: var(--paper);
}
.art-img {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--ink2);
    border: 1px dashed rgba(232,80,26,.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .6rem;
    color: rgba(232,80,26,.3);
    text-transform: uppercase;
    letter-spacing: .1em;
    margin: 28px 0;
}
.art-back {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,.06);
}
.art-side-inner {
    background: var(--ink2);
    border: 1px solid rgba(255,255,255,.06);
    padding: 24px;
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
}
.art-side-inner h4 {
    font-size: .66rem;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--ash);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.art-related-item {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,.05);
    color: inherit;
    transition: opacity .2s;
}
.art-related-item:last-child {
    border-bottom: none;
}
.art-related-item:hover {
    opacity: .75;
}
.art-related-item .news-cat {
    margin-bottom: 6px;
}
.art-related-item .art-rel-title {
    display: block;
    font-size: .8rem;
    color: var(--fog);
    line-height: 1.5;
    margin: 6px 0 4px;
}
.art-related-item time {
    font-size: .64rem;
    color: var(--ash);
    letter-spacing: .08em;
}
@media (max-width: 900px) {
    .art-layout {
        grid-template-columns: 1fr;
    }
    .art-side-inner {
        position: static;
    }
}

/* HTML実体に合わせた追加スタイル */
.art-main {
    padding: clamp(100px,14vw,150px) 0 clamp(48px,6vw,80px);
}
.art-header {
    margin-bottom: clamp(28px,3vw,40px);
}

/* アイキャッチ画像 */
.art-eyecatch {
     width: 100%;
     aspect-ratio: 16/9;
     background: var(--ink2);
     border: 1px dashed rgba(232,80,26,.2);
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: .6rem;
     color: rgba(232,80,26,.3);
     text-transform: uppercase;
     letter-spacing: .1em;
     margin-bottom: clamp(28px,3vw,40px);
}

/* インフォテーブル */
.art-info-table {
    margin: 28px 0;
}
.art-info-table table {
    width: 100%;
    border-collapse: collapse;
}
.art-info-table th,
.art-info-table td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,.06);
    font-size: .8rem;
    line-height: 1.7;
}
.art-info-table th {
    color: var(--ash);
    font-weight: 600;
    white-space: nowrap;
    width: 160px;
    background: rgba(255,255,255,.02);
}
.art-info-table td {
    color: var(--fog);
}

/* 追加：　不足クラス */
.art-body-wrap {
    min-width: 0;
}
.art-footer {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid rgba(255,255,255,.06);
}
.art-cta-box {
    margin: 40px 0;
    padding: 28px 24px;
    background: rgba(232,80,26,.06);
    border: 1px solid rgba(232,80,26,.18);
    text-align: center;
}
.art-sidebar {
    min-width: 0;
}

/* ========== サイドバー ========== */
.art-sidebar {
    align-self: start;
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.art-side-card {
    background: var(--ink2);
    border: 1px solid rgba(255,255,255,.06);
    padding: 24px;
}
.art-side-ttl {
    font-size: .62rem;
    font-weight: 700;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--fire);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.art-related {
    display: flex;
    flex-direction: column;
}
.art-rel-item {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    color: inherit;
    text-decoration: none;
    transition: opacity .2s;
}
.art-rel-item:last-child {
    border-bottom: none;
}
.art-rel-item:hover {
    opacity: .7;
}
.art-rel-img {
    width: 72px;
    aspect-ratio: 4/3;
    flex-shrink: 0;
    background: var(--ink3);
    border: 1px dashed rgba(232,80,26,.18);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .5rem;
    color: rgba(232,80,26,.25);
    text-transform: uppercase;
    letter-spacing: .08em;
}
.art-rel-body {
    min-width: 0;
}
.art-rel-body .news-cat {
    display: inline-block;
    margin-bottom: 5px;
}
.art-rel-body p {
    font-size: .76rem;
    color: var(--fog);
    line-height: 1.5;
    margin: 0 0 5px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.art-rel-date {
    font-size: .63rem;
    color: var(--ash);
    letter-spacing: .06em;
}
.art-cats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.art-cat-link {
    font-size: .62rem;
    font-weight: 700;
    letter-spacing: .08em;
    padding: 5px 12px;
    background: none;
    border: 1px solid rgba(255,255,255,.08);
    color: var(--ash);
    transition: color .2s, border-color .2s;
}
.art-cat-link:hover {
    color: var(--paper);
    border-color: rgba(255,255,255,.2);
}
.art-contact-cta {
   text-align: center;
}
.art-contact-cta p {
    font-size: .78rem;
    color: var(--ash);
    margin-bottom: 14px;
}
.art-contact-cta .btn-fire {
    display: block;
    text-align: center;
}
@media (max-width: 900px) {
    .art-sidebar {
        position: static;
    }
}