.site-ad{box-sizing:border-box;width:calc(100% - 40px);max-width:970px;margin:48px auto;padding:18px 0 22px;border-block:1px solid #ffffff14;clear:both}
.site-ad-label{margin:0 0 16px;color:#a9a8a5;text-align:center;font:500 9px/1.5 Arial,sans-serif;letter-spacing:.18em;text-transform:uppercase}
.site-ad-content{width:100%;max-width:970px;margin-inline:auto}
.site-ad-unit{width:100%;height:100px}
.site-ad-placeholder{box-sizing:border-box;min-height:100px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:20px;background:#ffffff03;border:1px dashed #ffffff1c;border-radius:8px;text-align:center;font:400 13px/1.5 Arial,sans-serif;color:#aaa}
.site-ad-placeholder small{font-size:10px;color:#888}
.detail>.site-ad{width:100%;margin-block:56px}
.mural-page .site-ad,.mural-detail>.site-ad,.story-page>.site-ad{width:100%;margin-block:48px}
.mural-grid>.site-ad{grid-column:1/-1;margin-block:16px}
.alm-main>.site-ad{width:calc(100% - 64px);margin-block:64px}
.site-ad[hidden]{display:none!important}
.chapter .site-ad{grid-column:1/-1;width:100%;margin-block:48px}
.chapter-concrete .site-ad{border-color:#0002}
.chapter-concrete .site-ad-label{color:#625d55}
.chapter-concrete .site-ad-placeholder{background:#00000003;border-color:#0003;color:#625d55}
.chapter-concrete .site-ad-placeholder small{color:#716b63}
@media(min-width:800px){.site-ad-unit{height:90px}.site-ad-placeholder{min-height:90px}}
@media(max-width:480px){.site-ad{margin-block:32px}.alm-main>.site-ad{width:calc(100% - 40px);margin-block:40px}}