.tool-layout{display:flex;align-items:flex-start;min-height:calc(100vh - var(--nav-height))}.tool-sidebar{width:var(--sidebar-width);flex-shrink:0;border-right:1px solid var(--border);background:var(--surface);position:-webkit-sticky;position:sticky;top:var(--nav-height);height:calc(100vh - var(--nav-height));overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.tool-sidebar::-webkit-scrollbar{width:6px}.tool-sidebar::-webkit-scrollbar-track{background:transparent}.tool-sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.tool-sidebar::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.tool-sidebar-head{position:-webkit-sticky;position:sticky;top:0;z-index:1;padding:16px 14px 12px;background:var(--surface);border-bottom:1px solid var(--border)}.tool-sidebar-title{margin:0 0 10px;padding:0 2px;font-size:13px;font-weight:600;color:var(--text-muted);letter-spacing:.04em}.tool-search-box{position:relative;display:flex;align-items:center}.tool-search-input{width:100%;padding:7px 28px 7px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:13px}.tool-search-input:focus{outline:none;border-color:var(--accent)}.tool-search-input::-webkit-search-cancel-button{display:none}.tool-search-clear{position:absolute;right:6px;width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:50%;background:var(--border);color:var(--text-muted);font-size:14px;line-height:1;cursor:pointer}.tool-search-clear:hover{color:var(--text)}.tool-search-empty{margin:8px 4px;font-size:13px;color:var(--text-muted)}.tool-sidebar-nav{padding:12px 14px 20px}.tool-nav-group,.tool-sidebar-nav{display:flex;flex-direction:column;gap:4px}.tool-nav-group{margin-top:8px}.tool-nav-group-label{padding:8px 12px 4px;font-size:11px;font-weight:600;color:var(--text-muted);letter-spacing:.06em;text-transform:uppercase}.tool-nav-link{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:10px;color:var(--text);transition:background .2s,color .2s}.tool-nav-link span{font-size:12px;color:var(--text-muted)}.tool-nav-link:hover{background:var(--bg)}.tool-nav-link.is-active{background:color-mix(in srgb,var(--accent) 12%,var(--surface))}.tool-nav-link.is-active strong{color:var(--accent)}.tool-main{flex:1 1;min-width:0;padding:28px 32px}@media (max-width:768px){.tool-layout{flex-direction:column;align-items:stretch}.tool-sidebar{width:100%;position:static;height:auto;overflow-y:visible;padding:0;border-right:none;border-bottom:1px solid var(--border)}.tool-sidebar-head{position:static;border-bottom:none;padding:12px 12px 8px}.tool-sidebar-title{display:none}.tool-sidebar-nav{flex-direction:row;gap:8px;overflow-x:auto;padding:0 12px 12px}.tool-nav-group{flex-direction:row;gap:8px;margin-top:0}.tool-nav-group-label{display:none}.tool-nav-link{flex-shrink:0;padding:8px 14px;border:1px solid var(--border)}.tool-nav-link span{display:none}.tool-main{padding:20px 16px}}