.sidebar{width:250px;background-color:var(--card-bg);border-right:1px solid var(--border-color);overflow:hidden;transition:transform .3s ease;display:flex;flex-direction:column;height:100vh}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;height:100vh;width:250px;transform:translateX(-100%);z-index:50}.sidebar.open{transform:translateX(0)}}.sidebar-overlay{display:none}@media(max-width:768px){.sidebar-overlay{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,.5);z-index:40}}.sidebar-header{padding:16px;border-bottom:1px solid var(--border-color);justify-content:flex-start;gap:12px;background-color:var(--card-bg)}.sidebar-header,.sidebar-title{display:flex;align-items:center}.sidebar-title{flex:1;text-decoration:none;text-align:left;max-height:48px;transition:opacity .2s ease}.sidebar-title:hover{opacity:.85}.sidebar-content{padding:16px 0;flex:1;overflow-y:auto}.sidebar-search-wrapper{padding:10px 12px;border-bottom:1px solid var(--border-color)}.sidebar-search-wrapper .sidebar-search{display:flex;align-items:center;gap:8px}.sidebar-search-wrapper .sidebar-search .sidebar-search-input{flex:1;padding:8px 10px;border:1px solid var(--light-border);border-radius:6px;background:var(--bg);color:var(--muted-color);font-size:14px}.sidebar-search-wrapper .sidebar-search .clear-search{background:none;border:none;font-size:18px;cursor:pointer;color:var(--muted-2);padding:4px 6px}.sidebar-search-wrapper .no-results{padding:12px;color:var(--muted-2);font-size:13px}.sidebar-footer{min-height:58px;padding:8px 14px;border-top:1px solid var(--border-color);background-color:var(--bg-light);display:flex;flex-direction:column;gap:6px}.sidebar-footer p{margin:0;text-align:center}.language-label,.sidebar-footer p{font-size:13px;color:var(--muted-2)}.language-label{font-family:inherit;font-weight:400;display:inline-flex;align-items:center;margin-right:8px;white-space:nowrap;line-height:1}.language-selector-wrapper{display:flex;align-items:center;gap:8px}.sidebar-group{margin:0}.sidebar-group-title{font-size:14px;font-weight:500;color:var(--muted-2);padding:8px 12px;margin:8px 0 0;transition:color .2s ease}.sidebar-group-title:hover{color:var(--primary-color)}.sidebar-group-title.level-0{padding-left:16px}.sidebar-group-title.level-1{padding-left:36px}.sidebar-group-title.level-2{padding-left:56px}.sidebar-group-title.level-3{padding-left:76px}.sidebar-group-title.level-4{padding-left:96px}.sidebar-group-title .chevron{margin-right:6px;display:inline-block;transition:transform .2s ease;transform:rotate(-90deg)}.sidebar-group-title.expanded .chevron{transform:rotate(0deg)}.sidebar-group-title{cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.sidebar-links{display:flex;flex-direction:column;gap:0}.sidebar-links .sidebar-link{display:block;padding:8px 12px;color:var(--muted-color);font-size:14px;text-decoration:none;transition:all .2s ease;border-left:3px solid rgba(0,0,0,0);cursor:pointer}.sidebar-links .sidebar-link:hover{background-color:var(--bg-light);color:var(--primary-color)}.sidebar-links .sidebar-link.active{background-color:var(--primary-bg);color:var(--primary-color);border-left-color:var(--primary-color);font-weight:500;cursor:default}.sidebar-link.level-0{padding-left:12px}.sidebar-link.level-1{padding-left:38px}.sidebar-link.level-2{padding-left:58px}.sidebar-link.level-3{padding-left:78px}@media(max-width:768px){.sidebar{width:240px}.sidebar-header{padding:12px 16px}.sidebar-title h1{font-size:18px}.sidebar-group-title{font-size:11px}.sidebar-link{padding:8px 12px}}.layout{display:flex;flex-direction:column;height:100vh;background-color:var(--card-bg)}.layout-container{display:flex;flex:1;overflow:hidden;height:100vh}.layout-main{flex:1;overflow-y:auto;padding:20px 20px 0;background-color:var(--bg-light);display:flex;flex-direction:column}@media(max-width:768px){.layout-main{padding:16px 16px 0}}.main-content{flex:1}.home-page{width:100%}.welcome-container{max-width:1200px;margin:0 auto;text-align:center}.welcome-container h2{font-size:24px;font-weight:700;color:var(--secondary-color);margin-bottom:16px}.welcome-container>p{font-size:14px;color:var(--muted-2);margin-bottom:40px;line-height:1.6}