.article-bt05 .article{width:min(100% - 3rem,52rem)}
.article-bt05 .article h1{font-size:clamp(2.35rem,5vw,4rem)}
.article-bt05 .article-cover{margin:2rem 0 3rem}
.article-bt05 .article-cover img{width:100%;height:auto;display:block}
.article-bt05 figcaption{font:1rem/1.6 Arial,sans-serif;color:var(--muted);margin-top:1rem}
.article-bt05 .article-body a{text-decoration:underline;text-underline-offset:.2em}
.article-bt05 .article-related{border-top:1px solid var(--line);padding-top:1.5rem;margin-top:3rem;font-size:1rem}
.article-bt05 .article-education-note{font:.875rem/1.6 Arial,sans-serif;color:var(--muted);border-top:1px solid var(--line);margin-top:2rem;padding-top:1.2rem}
@media(max-width:640px){.article-bt05 .article{width:calc(100% - 2.5rem)}.article-bt05 .article-cover{margin-left:-.25rem;margin-right:-.25rem}}