:root{--site-header-height:56px;--site-header-total:var(--site-header-height);--site-header-bg:#ffffff;--site-header-fg:#111827;--site-header-fg-muted:#6b7280;--site-header-hover:rgba(0, 0, 0, 0.06);--site-header-border:rgba(0, 0, 0, 0.08);--site-header-focus:#2563eb}@media(prefers-color-scheme:dark){:root{--site-header-bg:#1f2937;--site-header-fg:#f9fafb;--site-header-fg-muted:#9ca3af;--site-header-hover:rgba(255, 255, 255, 0.08);--site-header-border:rgba(255, 255, 255, 0.06);--site-header-focus:#60a5fa}}html[data-theme=light]{--site-header-bg:#ffffff;--site-header-fg:#111827;--site-header-fg-muted:#6b7280;--site-header-hover:rgba(0, 0, 0, 0.06);--site-header-border:rgba(0, 0, 0, 0.08);--site-header-focus:#2563eb;--body-background:white;--body-background-tint:none;--body-font-color:black;--color-link:#0055bb;--color-visited-link:#5500bb;--icon-filter:none;--gray-100:#f8f9fa;--gray-200:#e9ecef;--gray-500:#adb5bd}html[data-theme=dark]{--site-header-bg:#1f2937;--site-header-fg:#f9fafb;--site-header-fg-muted:#9ca3af;--site-header-hover:rgba(255, 255, 255, 0.08);--site-header-border:rgba(255, 255, 255, 0.06);--site-header-focus:#60a5fa;--body-background:#343a40;--body-background-tint:none;--body-font-color:#e9ecef;--color-link:#84b2ff;--color-visited-link:#b88dff;--icon-filter:brightness(0) invert(1);--gray-100:#494e54;--gray-200:#5c6165;--gray-500:#999d9f}.site-header{position:fixed;top:0;left:0;right:0;z-index:100;font-family:inherit;box-shadow:0 1px 3px rgba(0,0,0,.18)}.site-header a[href],.site-header a[href]:visited{color:var(--site-header-fg);text-decoration:none}.site-header__menu-toggle:focus-visible,.site-header__theme-toggle:focus-visible,.site-header__brand:focus-visible,.site-header__repo:focus-visible{outline:2px solid var(--site-header-focus);outline-offset:2px;border-radius:4px}.site-header__bar{display:flex;align-items:center;height:var(--site-header-height);padding:0 1.25rem;background:var(--site-header-bg);color:var(--site-header-fg);gap:.75rem;border-bottom:1px solid var(--site-header-border)}.site-header__menu-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;background:0 0;border:0;color:var(--site-header-fg);cursor:pointer;padding:0}.site-header__brand{display:inline-flex;align-items:baseline;gap:.6rem;color:var(--site-header-fg);text-decoration:none;min-width:0}.site-header__brand:hover{text-decoration:none}.site-header__title{font-size:1.15rem;font-weight:600;letter-spacing:.01em}.site-header__tagline{color:var(--site-header-fg-muted);font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.site-header__spacer{flex:1}.site-header__theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:0 0;border:0;border-radius:4px;color:var(--site-header-fg);cursor:pointer;padding:0;transition:background-color 120ms ease}.site-header__theme-toggle:hover{background:var(--site-header-hover)}.site-header__theme-icon{display:none}.site-header__theme-icon--moon{display:inline-flex}@media(prefers-color-scheme:dark){.site-header__theme-icon--moon{display:none}.site-header__theme-icon--sun{display:inline-flex}}html[data-theme=light] .site-header__theme-icon--moon{display:inline-flex}html[data-theme=light] .site-header__theme-icon--sun{display:none}html[data-theme=dark] .site-header__theme-icon--moon{display:none}html[data-theme=dark] .site-header__theme-icon--sun{display:inline-flex}.site-header__repo{display:inline-flex;align-items:center;gap:.6rem;max-width:18rem;color:var(--site-header-fg);text-decoration:none;padding:.35rem .6rem;border-radius:4px;font-size:.85rem;transition:background-color 120ms ease}.site-header__repo:hover{background:var(--site-header-hover);text-decoration:none}.site-header__repo-icon{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;flex-shrink:0}.site-header__repo-info{display:inline-flex;flex-direction:column;min-width:0;line-height:1.2}.site-header__repo-path{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.site-header__facts{list-style:none;margin:2px 0 0;padding:0;display:flex;gap:.7rem;font-size:.72rem;color:var(--site-header-fg-muted)}.site-header__fact{display:inline-flex;align-items:center;gap:.25rem;white-space:nowrap}.site-header__fact[hidden]{display:none}.site-header__fact svg{flex-shrink:0;opacity:.85}body{padding-top:var(--site-header-total)}.book-menu .book-menu-content,.book-toc .book-toc-content{top:var(--site-header-total)!important;max-height:calc(100vh - var(--site-header-total))!important}.book-menu .book-brand{display:none}@media(max-width:56rem){.site-header__menu-toggle{display:inline-flex}.site-header__tagline{display:none}.site-header__repo-info{display:none}.site-header__repo{padding:.35rem;max-width:none}.book-page>.book-header{display:none!important}}