:root{--bg: #f7f3e8;--line: #e5e0d0;--line-sub: #efe9db;--text: #3c3832;--text-sub: #7a746a;--red: #d00000;--header-h: 88px;--cat-art: #f2d7ce;--cat-music: #cde3f0;--cat-literature: #f0e6c0;--cat-history: #d6e5ce;--cat-science: #dfd6ec;--cat-celebrity: #f3dfbe;--era-w: 96px;--lane-w: 260px;--events-w: 168px}@media(max-width:1199px){:root{--era-w: 64px;--lane-w: 190px;--events-w: 104px}}@media(max-width:767px){:root{--era-w: 32px;--lane-w: 108px;--events-w: 56px;--header-h: 120px}}*{box-sizing:border-box}html{scroll-behavior:auto;overflow-x:hidden;max-width:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Hiragino Mincho ProN,Yu Mincho,"Noto Serif JP",serif;line-height:1.5;overflow-x:hidden;max-width:100%}.header{position:fixed;top:0;left:0;right:0;height:auto;min-height:52px;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 14px;background:#f7f3e8f5;border-bottom:1px solid 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