:root {
        --sidebar-bg: #f9fafb;
        --sidebar-border: #e5e7eb;
        --text-main: #111827;
        --text-muted: #6b7280;
        --accent: #2563eb;
        --hover-bg: #eef2ff;
        --bg-active: #e8f0ff;
    }

    * {
        box-sizing: border-box;
    }

    body {
        margin: 0;
        font-family: Inter, Arial, sans-serif;
        display: flex;
        height: 100vh;
        overflow: hidden;
        color: var(--text-main);
    }

    
    aside {
        width: 220px;
        background: var(--sidebar-bg);
        border-right: 1px solid var(--sidebar-border);
        padding: 24px 20px;
        height: 100vh;
        overflow-y: auto;
    }

    
    .logo {
        text-align: center;
        margin-bottom: 32px;
    }

    .logo img {
        max-width: 150px;
    }
    
    .cms-menu  {
        list-style: none;
    }

    .cms-menu  > li {
        margin-bottom: 14px;
    }

    .cms-menu .active {
        
        color: var(--accent);
        font-weight: 600;
    }

    .cms-menu > li > a {
        display: block;
        padding: 6px 4px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-main);
        text-decoration: none;
    }

    
    .cms-menu li ul {
        margin-top: 6px;
        padding-left: 12px;
    }

    
    .cms-menu li ul li {
        margin-bottom: 4px;
    }

    .cms-menu li ul a {
        display: block;
        padding: 6px 8px;
        font-size: 14px;
        font-weight: 400;
        color: var(--text-muted);
        text-decoration: none;
        border-radius: 6px;
        transition: background 0.15s ease, color 0.15s ease;
    }

    

    
    .cms-menu a:hover {
        background: var(--hover-bg);
        color: var(--accent);
    }

    
    main {
        flex: 1;
        padding: 48px 56px;
        height: 100vh;
        overflow-y: auto;
        background: #ffffff;
        text-align: center;
    }
    main>div{
        display: inline-block;
        text-align: left;
    }
    
    main h1 {
        font-size: 32px;
        margin-bottom: 16px;
    }

    main h2 {
        font-size: 24px;
        margin-top: 40px;
        margin-bottom: 16px;
    }

    main p {
        line-height: 1.7;
        margin-bottom: 16px;
        max-width: 900px;
    }