.App-logo{height:40vmin;pointer-events:none}@media (prefers-reduced-motion: no-preference){.App-logo{animation:App-logo-spin infinite 20s linear}}.App-header{background-color:#282c34;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:calc(10px + 2vmin);color:#fff}.App-link{color:#61dafb}@keyframes App-logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.custom-menu .ant-menu-item{border-radius:8px;margin:4px 8px;transition:all .3s ease}.custom-menu .ant-menu-item:after{border-right:3px solid #1890ff}.custom-menu .ant-menu-item-selected{background-color:#1890ff26!important;border-right:3px solid #1890ff;border-radius:0 8px 8px 0;font-weight:500}.custom-menu .ant-menu-item:not(.ant-menu-item-selected):hover{background-color:#ffffff1a;border-radius:8px}.custom-menu .ant-menu-item-selected .anticon,.custom-menu .ant-menu-item-selected span{color:#1890ff!important}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.App{text-align:center}.App-header{background-color:#282c34;padding:20px;color:#fff}.milkdown-editor{border:1px solid #d9d9d9!important;border-radius:6px;padding:16px;background:#fff;min-height:300px;max-height:500px;overflow-y:auto}.milkdown-editor:focus-within{border-color:#1890ff!important;box-shadow:0 0 0 2px #1890ff33}.milkdown-editor .editor,.milkdown-editor .ProseMirror{outline:none;min-height:260px}.milkdown-editor .ProseMirror p{margin:0 0 8px}.milkdown-editor .ProseMirror h1{font-size:24px;margin:16px 0 8px}.milkdown-editor .ProseMirror h2{font-size:20px;margin:14px 0 7px}.milkdown-editor .ProseMirror h3{font-size:18px;margin:12px 0 6px}.milkdown-editor .ProseMirror ul,.milkdown-editor .ProseMirror ol{padding-left:24px;margin:8px 0}.milkdown-editor .ProseMirror code{background:#f5f5f5;padding:2px 4px;border-radius:3px;font-family:Monaco,Courier New,monospace}.milkdown-editor .ProseMirror pre{background:#282c34;color:#fff;padding:12px;border-radius:6px;overflow-x:auto;margin:8px 0}.milkdown-editor .ProseMirror blockquote{border-left:3px solid #d9d9d9;padding-left:16px;margin:8px 0;color:#666}.milkdown-editor .ProseMirror a{color:#1890ff;text-decoration:none}.milkdown-editor .ProseMirror a:hover{text-decoration:underline}.help-center-page .category-list{display:flex;flex-direction:column;gap:8px}.help-center-page .category-item{display:flex;align-items:center;padding:12px;border:1px solid #f0f0f0;border-radius:8px;cursor:pointer;transition:all .2s ease;background:#fff}.help-center-page .category-item:hover{border-color:#1890ff;background:#f5f5f5}.help-center-page .category-item.selected{border-color:#1890ff;background:#e6f7ff;box-shadow:0 2px 8px #1890ff26}.help-center-page .category-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:#f5f5f5;border-radius:8px;margin-right:12px;flex-shrink:0}.help-center-page .category-item.selected .category-icon{background:#1890ff}.help-center-page .category-info{flex:1;min-width:0}.help-center-page .category-header{display:flex;align-items:center;margin-bottom:4px}.help-center-page .category-desc{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.help-center-page .category-meta{display:flex;gap:12px;margin-top:4px}.help-center-page .category-actions{display:flex;align-items:center;gap:4px;margin-left:12px;flex-shrink:0}