.bn8uxG_page{min-height:100dvh;color:var(--ink);background:#fff}.bn8uxG_topBand{background:var(--ink);height:64px}.bn8uxG_header{z-index:2;pointer-events:none;position:fixed;inset:0 0 auto}.bn8uxG_headerInner{justify-content:space-between;align-items:center;gap:24px;width:min(100%,1440px);min-height:64px;margin-inline:auto;padding:10px clamp(24px,4.79167vw,69px);display:flex}.bn8uxG_homeLink{pointer-events:auto;display:block}.bn8uxG_logo{width:146px;height:auto;transition:color .18s;display:block;transform:translateY(-10.33%)}.bn8uxG_homeLink[data-contrast=dark] .bn8uxG_logo{color:#000}.bn8uxG_homeLink[data-contrast=light] .bn8uxG_logo{color:#fff}.bn8uxG_backLink{color:#fff;pointer-events:auto;align-items:center;gap:7px;min-height:44px;font-size:13px;font-weight:300;line-height:1.2;text-decoration:none;transition:color .18s;display:inline-flex}.bn8uxG_backLink>svg{flex:0 0 12px;display:block}.bn8uxG_backLink[data-contrast=dark]{color:#111}.bn8uxG_backLink:hover{text-underline-offset:4px;text-decoration:underline}.bn8uxG_backLink:focus-visible,.bn8uxG_homeLink:focus-visible{outline-offset:5px;outline:1px solid}.bn8uxG_study{width:100%}.bn8uxG_chapterImage{width:100%;height:auto;display:block}.bn8uxG_backToTop{z-index:2;right:max(clamp(24px,4.79167vw,69px),50vw - 651px);bottom:max(16px, env(safe-area-inset-bottom));position:fixed}.bn8uxG_srOnly{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}@media (max-width:719px){.bn8uxG_topBand{height:56px}.bn8uxG_headerInner{min-height:56px;padding:6px 24px}.bn8uxG_logo{width:90px}.bn8uxG_backLink{font-size:12px}.bn8uxG_backToTop{right:24px;bottom:max(12px, env(safe-area-inset-bottom))}}@media (prefers-reduced-motion:reduce){.bn8uxG_logo,.bn8uxG_backLink{transition:none}}
