@import "variables.css";*{margin:0;padding:0;box-sizing:border-box}html{overflow:hidden}body{min-height:100vh;display:grid;grid-template-rows:auto 1fr auto;grid-template-columns:1fr;background-color:var(--content-bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow:hidden}#header{background-color:var(--header-bg);color:var(--header-text);padding:1rem 2rem;position:fixed;top:0;left:0;right:0;z-index:100}.header-content{display:flex;align-items:center;gap:1rem}.header-logo{height:50px;width:auto}#header h1{color:var(--header-text);font-size:1.75rem;margin:0}.main-container{display:grid;grid-template-columns:250px 1fr;overflow:hidden;transition:grid-template-columns 0.3s ease;position:fixed;top:82px;bottom:0;left:0;right:0;padding-bottom:58px}.main-container.sidebar-collapsed{grid-template-columns:40px 1fr}#sidebar{background-color:var(--sidebar-bg);padding:1.5rem 0;padding-bottom:58px;overflow-y:auto;overflow-x:hidden;position:relative;transition:padding 0.3s ease;height:calc(100% + 7px);max-height:none;min-height:calc(100% + 7px)}#sidebar.collapsed{padding:1.5rem 0;overflow-y:hidden}.sidebar-toggle{position:absolute;top:1rem;right:0.5rem;background:var(--sidebar-toggle-button-bg);border:none;color:white;cursor:pointer;padding:0.5rem;font-size:1rem;border-radius:4px;z-index:10;transition:transform 0.3s ease,right 0.3s ease;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.sidebar-toggle:hover{background:var(--keyboard-hover-bg)}#sidebar.collapsed .sidebar-toggle{transform:rotate(180deg);right:0.25rem}#sidebar.collapsed ul{opacity:0;visibility:hidden;transition:opacity 0.2s ease,visibility 0.2s ease}#sidebar ul{opacity:1;visibility:visible;transition:opacity 0.3s ease 0.1s,visibility 0.3s ease 0.1s}#sidebar::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background-color:var(--sidebar-left-accent)}#sidebar ul{list-style:none}#sidebar li{margin:0}.nav-item-wrapper{display:flex;align-items:center;position:relative}.nav-item-wrapper a{flex:1}.nav-toggle{background:none;border:none;color:white;cursor:pointer;padding:0.75rem 1rem;font-size:0.7rem;transition:transform 0.2s ease;flex-shrink:0}.nav-toggle:hover{opacity:0.8}.nav-level-1>li>.nav-item-wrapper>a.active ~ .nav-toggle,.nav-level-1>li>.nav-item-wrapper>a.active-parent ~ .nav-toggle{color:white}.has-children.expanded>.nav-item-wrapper>.nav-toggle{transform:rotate(180deg)}#sidebar a{display:block;padding:0.75rem 1.5rem 0.75rem 2.5rem;color:white;text-decoration:none;font-weight:500;transition:all 0.2s ease;position:relative}#sidebar a:hover{background-color:var(--sidebar-hover-bg)}#sidebar a.active:hover,#sidebar a.active-parent:hover{background-color:var(--sidebar-highlight-bg)}#sidebar .nav-level-2>li>a.active:hover,#sidebar .nav-level-2>li>.nav-item-wrapper>a.active:hover,#sidebar .nav-level-3>li>a.active:hover,#sidebar .nav-level-3>li>.nav-item-wrapper>a.active:hover,#sidebar .nav-level-4>li>a.active:hover{background-color:transparent}.nav-level-1>li>a.active,.nav-level-1>li>.nav-item-wrapper>a.active,.nav-level-1>li>a.active-parent,.nav-level-1>li>.nav-item-wrapper>a.active-parent{font-weight:bold;background-color:var(--sidebar-highlight-bg);color:white}#sidebar .nav-level-2>li>a.active,#sidebar .nav-level-2>li>.nav-item-wrapper>a.active,#sidebar .nav-level-3>li>a.active,#sidebar .nav-level-3>li>.nav-item-wrapper>a.active,#sidebar .nav-level-4>li>a.active{color:var(--content-text)!important;background-color:transparent}.nav-level-2,.nav-level-3,.nav-level-4{display:none;background-color:var(--sidebar-submenu-overlay);position:relative}.has-children.expanded>.nav-level-2,.has-children.expanded>.nav-level-3,.has-children.expanded>.nav-level-4{display:block}#sidebar .nav-level-2>li>a,#sidebar .nav-level-2>li>.nav-item-wrapper>a{padding-left:4rem!important;font-size:0.95rem}.nav-level-3{margin-left:1.5rem}#sidebar .nav-level-3>li>a,#sidebar .nav-level-3>li>.nav-item-wrapper>a{padding-left:4rem!important;font-size:0.9rem}.nav-level-4{margin-left:1.5rem}#sidebar .nav-level-4>li>a{padding-left:4rem!important;font-size:0.85rem}#sidebar a.active::before{content:"☞";position:absolute;left:0.75rem;top:50%;transform:translateY(-50%);font-size:1rem;font-weight:bold;color:white;z-index:1}#main-content{padding:2rem 2rem 0 2rem;color:var(--content-text);background-color:var(--content-bg);overflow-y:auto;display:flex;flex-direction:column}#content-wrapper{display:flex;flex-direction:column;height:100%;overflow:hidden;flex:1}#page-content{flex:1;overflow-y:auto;padding-bottom:1rem}#hashtag-area{padding:0.2rem 1rem 0.2rem 1rem!important;margin:0!important;display:block!important;text-align:right;flex-shrink:0;font-size:0;overflow:visible;height:auto!important;min-height:0!important}#hashtag-area:empty{display:none!important}.hashtag{color:var(--hashtag-text);background-color:var(--hashtag-bg);font-size:0.85rem;font-weight:500;white-space:nowrap;line-height:1.1;margin:0;padding:0.2rem 0.4rem;display:inline;margin-left:0.75rem;vertical-align:baseline;border-radius:0.25rem}#breadcrumb{margin-bottom:0.5rem;padding-bottom:0.5rem;color:var(--breadcrumb-text)}#breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem;margin:0;padding:0}#breadcrumb li{display:flex;align-items:center;font-size:0.9rem;color:var(--breadcrumb-text)}#breadcrumb li:not(:last-child)::after{content:"›";margin-left:0.5rem;color:var(--breadcrumb-text);font-size:1.2rem}#breadcrumb a{color:var(--content-text);text-decoration:none;transition:opacity 0.2s ease}#breadcrumb a:visited{color:var(--content-text)}#breadcrumb a:hover{color:var(--content-text);opacity:0.8;text-decoration:underline}#breadcrumb li:last-child{color:var(--breadcrumb-text);font-weight:500}#page-content{color:var(--content-text)}#page-content h1,#page-content h2,#page-content h3,#page-content h4,#page-content h5,#page-content h6{color:var(--content-text)}#page-content h1{margin-top:1.5rem;margin-bottom:1rem}#page-content h2{margin-top:2rem;margin-bottom:1rem}#page-content h3{margin-top:1.5rem;margin-bottom:0.75rem}#page-content h4{margin-top:1.25rem;margin-bottom:0.5rem}#page-content h5{margin-top:1rem;margin-bottom:0.5rem}#page-content h6{margin-top:1rem;margin-bottom:0.5rem}#page-content>h1:first-child,#page-content>h2:first-child,#page-content>h3:first-child,#page-content>h4:first-child,#page-content>h5:first-child,#page-content>h6:first-child{margin-top:0}#page-content p{line-height:1.6;color:var(--content-text)}#page-content ul,#page-content ol{margin:1rem 0;padding-left:2rem;line-height:1.6}#page-content ul{list-style-type:disc}#page-content ol{list-style-type:decimal}#page-content li{margin:0.5rem 0;color:var(--content-text)}#page-content ul ul,#page-content ol ul{list-style-type:circle}#page-content ul ul ul,#page-content ol ul ul,#page-content ol ol ul{list-style-type:square}#page-content ol ol{list-style-type:lower-alpha}#page-content ol ol ol{list-style-type:lower-roman}#page-content a{color:var(--link-text);text-decoration:none;font-weight:500;border-bottom:1px solid var(--link-text);transition:all 0.2s ease;padding-bottom:1px;text-shadow:0 1px 2px var(--content-bg)}#page-content a:hover{color:var(--link-hover);border-bottom-color:var(--link-hover);text-shadow:0 1px 3px var(--sidebar-bg)}#page-content a:visited{color:var(--link-visited);border-bottom-color:var(--link-visited);text-shadow:0 1px 2px var(--content-bg)}#page-content a:visited:hover{color:var(--link-hover);border-bottom-color:var(--link-hover);text-shadow:0 1px 2px var(--content-bg)}#page-content a:active{color:var(--link-hover)}#page-content img{max-width:100%;height:auto;display:block;margin:1rem 0;border-radius:4px}#page-content img[loading="lazy"]:not([src*="data:"]){background:var(--image-loading-bg);min-height:200px}.table-of-contents{background-color:var(--toc-bg);border:2px solid var(--content-text);padding:0.75rem 1rem;margin:1rem 0;border-radius:4px;width:min(640px,100%)}.table-of-contents .toc-header{display:grid;grid-template-columns:1fr auto;gap:0.5rem;align-items:start;position:relative}.table-of-contents .toc-header::before{content:"";position:absolute;top:0;left:0;right:30px;padding:0.25rem 0.5rem;border-radius:3px;opacity:0;pointer-events:none;transition:opacity 0.3s ease,background-color 0.2s ease;display:flex;align-items:center;justify-content:center}.table-of-contents.collapsed .toc-header::before{content:"···";opacity:1;color:var(--text-muted);font-size:1.2rem;letter-spacing:0.2em;pointer-events:auto}.table-of-contents.collapsed .toc-header{cursor:pointer}.table-of-contents .toc-header-left{overflow-y:auto;overflow-x:hidden;transition:max-height 0.3s ease,opacity 0.3s ease;max-height:200px;opacity:1}.table-of-contents.collapsed .toc-header-left{max-height:0;opacity:0;overflow:hidden}.table-of-contents .toc-header-left>ul{list-style:none;padding:0;margin:0}.table-of-contents .toc-header-right{display:flex;align-items:center;justify-content:center;padding-top:0.25rem}.table-of-contents .toc-toggle{background:none;border:none;color:var(--toc-heading);cursor:pointer;font-size:1.2rem;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;transition:transform 0.2s ease}.table-of-contents.collapsed .toc-toggle{transform:rotate(-90deg)}.table-of-contents .toc-toggle:hover{opacity:0.7}.table-of-contents ul,.table-of-contents ol{list-style:none!important;padding:0!important;margin:0.5rem 0 0 0!important}.table-of-contents li{margin:0.15rem 0!important;padding-left:1.5rem!important;position:relative;line-height:1.4}.table-of-contents .toc-item>.toc-item-wrapper{cursor:pointer;display:block}.table-of-contents .toc-item.collapsed::before{content:"▸"!important;cursor:pointer}.table-of-contents .toc-item:not(.collapsed)::before{content:"▾"!important;cursor:pointer}.table-of-contents .toc-item-wrapper:hover{opacity:0.85}.table-of-contents .toc-children{list-style:none;padding:0;margin:0.25rem 0 0 0;max-height:1000px;overflow:hidden;transition:max-height 0.3s ease,margin 0.3s ease}.table-of-contents .toc-item.collapsed>.toc-children{max-height:0;margin:0}.table-of-contents .toc-subpage{font-weight:600}.table-of-contents .toc-subpage::before{content:"▸";color:var(--toc-heading)}.table-of-contents .toc-h2{font-size:1.0em;font-weight:600;padding-left:1.5rem;position:relative}.table-of-contents .toc-h2::before{content:"▸";color:var(--toc-heading);position:absolute;left:0}.table-of-contents .toc-h2.toc-item::before{content:none}.table-of-contents .toc-h2.toc-item>.toc-item-wrapper{position:relative}#page-content .table-of-contents .toc-h2 a{color:var(--toc-link)!important;border-bottom:none!important;text-shadow:none!important}#page-content .table-of-contents .toc-h2 a:visited{color:var(--toc-link)!important}#page-content .table-of-contents .toc-h2 a:hover{color:var(--toc-link-hover)!important}.table-of-contents .toc-h3{font-size:0.95em;padding-left:1.5rem;position:relative}.table-of-contents .toc-h3::before{content:"▸";color:var(--toc-heading);position:absolute;left:0}.table-of-contents .toc-h3.toc-item::before{content:none}.table-of-contents .toc-h3.toc-item>.toc-item-wrapper{position:relative}#page-content .table-of-contents .toc-h3 a{color:var(--toc-link)!important;border-bottom:none!important;text-shadow:none!important}#page-content .table-of-contents .toc-h3 a:visited{color:var(--toc-link)!important}#page-content .table-of-contents .toc-h3 a:hover{color:var(--toc-link-hover)!important}.table-of-contents .toc-h4{margin-left:1rem;padding-left:1.5rem;font-size:0.9em}.table-of-contents .toc-h4::before{content:none}.table-of-contents .toc-divider{margin:0.75rem 0;padding:0;height:1px;background:linear-gradient(to right,transparent,var(--content-text),transparent);list-style:none}.table-of-contents .toc-divider::before{content:none}.table-of-contents .toc-section{list-style:none;padding-left:0}.table-of-contents .toc-section::before{content:none}.table-of-contents .toc-section-header{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.25rem;cursor:pointer;user-select:none}.table-of-contents .toc-section-title{font-weight:600;color:var(--toc-heading);font-size:0.85rem;text-transform:uppercase;letter-spacing:0.5px}.table-of-contents .toc-section-toggle{background:none;border:none;color:var(--toc-heading);cursor:pointer;font-size:0.7rem;padding:0;width:16px;height:16px;display:flex;align-items:center;justify-content:center;transition:transform 0.2s ease}.table-of-contents .toc-section-toggle:hover{opacity:0.7}.table-of-contents .toc-section-content{list-style:none;padding:0;margin:0;max-height:1000px;overflow:hidden;transition:max-height 0.3s ease,margin 0.3s ease}.table-of-contents .toc-section.collapsed .toc-section-content{max-height:0}.table-of-contents .toc-section.collapsed .toc-section-toggle{transform:rotate(-90deg)}#page-content .table-of-contents a{color:var(--toc-link)!important;text-decoration:none!important;transition:opacity 0.2s ease;font-weight:500;border-bottom:none!important;text-shadow:none!important}#page-content .table-of-contents a:visited{color:var(--toc-link)!important}#page-content .table-of-contents a:hover{color:var(--toc-link-hover)!important;opacity:0.8;text-decoration:underline}#footer{background-color:var(--footer-bg);color:var(--footer-text);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;position:fixed;bottom:0;left:0;right:0;z-index:100}.footer-left{font-size:0.875rem;color:var(--footer-text);opacity:0.8}.footer-left p{margin:0}.footer-right{display:flex;gap:2rem}#footer a{color:var(--footer-link)!important;text-decoration:none;transition:color 0.2s ease,opacity 0.2s ease}#footer a:hover{color:var(--footer-link-hover)!important;text-decoration:underline}a:focus,button:focus,[tabindex]:focus{outline:2px solid var(--keyboard-focus-outline);outline-offset:2px}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--keyboard-focus-outline);outline-offset:2px}a:focus:not(:focus-visible),button:focus:not(:focus-visible),[tabindex]:focus:not(:focus-visible){outline:none}#sidebar a:focus{background-color:var(--keyboard-focus-bg-20);outline:2px solid var(--keyboard-focus-outline);outline-offset:-2px}#sidebar a:focus-visible{background-color:var(--keyboard-focus-bg-25);outline:3px solid var(--keyboard-focus-outline);outline-offset:-2px}.nav-toggle:focus,.sidebar-toggle:focus{outline:2px solid var(--keyboard-focus-outline);outline-offset:2px;box-shadow:0 0 0 4px var(--keyboard-focus-bg-30)}.nav-toggle:focus-visible,.sidebar-toggle:focus-visible{outline:3px solid var(--keyboard-focus-outline);outline-offset:2px;box-shadow:0 0 0 5px var(--keyboard-focus-bg-40)}#page-content a:focus{outline:2px solid var(--keyboard-focus-outline);outline-offset:3px;background-color:var(--keyboard-focus-bg-20)}#page-content a:focus-visible{outline:3px solid var(--keyboard-focus-outline);outline-offset:3px;background-color:var(--keyboard-focus-bg-25)}.table-of-contents a:focus{background-color:var(--keyboard-focus-bg-15);outline:2px solid var(--keyboard-focus-outline);outline-offset:-1px}.table-of-contents a:focus-visible{background-color:var(--keyboard-focus-bg-20);outline:3px solid var(--keyboard-focus-outline);outline-offset:-1px}#breadcrumb a:focus,#breadcrumb a:focus-visible{outline:2px solid var(--keyboard-focus-outline);outline-offset:2px;background-color:var(--keyboard-focus-bg-20);border-radius:2px}#header a:focus,#header a:focus-visible{outline:2px solid var(--keyboard-focus-outline);outline-offset:2px;border-radius:2px}#footer a:focus,#footer a:focus-visible{outline:2px solid var(--keyboard-focus-outline);outline-offset:2px;background-color:var(--keyboard-focus-bg-15);border-radius:2px}@media (max-width:768px){.main-container{grid-template-columns:1fr;grid-template-rows:auto 1fr}#sidebar{border-right:none;padding:1rem 0}#sidebar ul{display:flex;flex-wrap:wrap;justify-content:center}#sidebar li{flex:0 0 auto}#sidebar a{padding:0.5rem 1rem}}.image-text-row{display:flex;align-items:center;gap:15px}.image-text-row p{margin:0}