.parts-folding{margin-top:25px}.parts-folding__heading{padding:3px 12px;border-radius:6px;background:#EBEBEB;color:var(--category-color);font-weight:500;font-size:16px;line-height:1.33;letter-spacing:.05em;position:relative;z-index:0;-webkit-user-select:none;-moz-user-select:none;user-select:none}.parts-folding__heading::before,.parts-folding__heading::after{content:"";background:var(--category-color);display:block;width:12px;height:1px;position:absolute;top:0;bottom:0;right:12px;margin:auto;transform-origin:center center;transition:transform 0.4s}.parts-folding__heading::after{transform:rotate(90deg)}.parts-folding[open] .parts-folding__heading::after{transform:rotate(0)}.parts-folding__contents{padding-inline:18px}@media (hover:hover){.parts-folding__heading{transition:background-color 0.4s}.parts-folding__heading:hover{background-color:var(--category-color-opacity15)}}body .bl-history .number{font-family:var(--font-en);font-weight:600;font-size:21px}body .bl-history__era{margin-top:25px}body .bl-history__year-group{margin-top:17px;padding-left:19px}body .bl-history__year-heading{margin-left:-19px;margin-bottom:11px;padding-inline:12px 14px;border-left:5px solid var(--category-color);min-width:191px;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content;background:#4F87A5;color:#fff;font-weight:500;font-size:16px}body .bl-history__year-heading .gengo{font-weight:400;font-size:18px}body .bl-history__month-group{margin-block:11px 15px;display:flex;align-items:flex-start;gap:8px}body .bl-history__month-heading{flex-shrink:0;border:1px solid var(--color);border-radius:3px;width:50px;height:22px;line-height:18px;color:var(--color);font-weight:400;text-align:center}body .bl-history__month-contents{margin-block:var(--leading-trim);white-space:pre-line}body .bl-history__month-contents .orange{color:#D1811F}body .bl-history__figure{margin-block:16px 20px;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}body .bl-history__figure img{max-width:100%}body .bl-history__figcaption{margin-top:3px;text-align:center}@media (hover:hover){body .bl-history__era-heading{transition:background-color 0.4s}body .bl-history__era-heading:hover{background-color:#D9E5EC}}@media screen and (max-width:768px){body .bl-history__figure img{margin-inline:auto}}