:root {
        --mheader_height: 60px;
        --color_0052d9: #0052d9;
        --color_0052d901: rgb(0, 82, 217, 0.1);
    }

    .mheader {
        width: 100%;
        height: var(--mheader_height);
        position: fixed;
        top: 0;
        left: 0;
        display: flex;
        justify-content: center;
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        z-index: 100;
    }

    .mheader .header_box {
        width: 100%;
        max-width: 1200px;
        height: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 20px;
        box-sizing: border-box;
    }
    .mheader .logo {
        margin: 0;
        padding: 0;
        font-size: 24px;
        font-weight: bold;
        margin-right: 20px;
    }

    .mheader .bar {
        display: flex;
        align-items: center;
    }

    .mheader .bar .bar_btn {
        display: flex;
        gap: 8px;
        padding: 0 10px;
    }

    .mheader .bar .bar_btn .nav-item {
        display: flex;
        align-items: center;
        color: #333;
        font-size: 14px;
        font-weight: 500;
        padding: 6px 16px;
        border-radius: 12px;
        text-decoration: none;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
    }

    .mheader .bar .bar_btn .nav-item .menu-icon {
        font-size: 16px;
        margin-right: 6px;
        transition: transform 0.3s ease;
    }

    .mheader .bar .bar_btn .nav-item.active {
        color: var(--color_0052d9);
        background: linear-gradient(45deg,
                rgba(0, 82, 217, 0.1),
                rgba(0, 82, 217, 0.05));
    }

    .mheader .bar .bar_btn .nav-item.active::before {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(to right,
                var(--color_0052d9),
                rgba(0, 82, 217, 0.5));
        transform: scaleX(1);
    }

    .mheader .bar .bar_btn .nav-item:hover {
        color: var(--color_0052d9);
        background: rgba(0, 82, 217, 0.05);
        transform: translateY(-1px);
    }

    .mheader .bar .bar_btn .nav-item:hover .menu-icon {
        transform: scale(1.1) rotate(5deg);
    }

    .mheader .bar .bar_btn .nav-item::after {
        content: '';
        position: absolute;
        width: 100px;
        height: 100px;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 50%;
        transform: scale(0);
        transition: transform 0.5s, opacity 0.3s;
        opacity: 0;
        pointer-events: none;
    }

    .mheader .bar .bar_btn .nav-item:active::after {
        transform: scale(2);
        opacity: 0;
        transition: 0s;
    }

    @keyframes navItemFadeIn {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .mheader .bar .bar_btn .nav-item {
        animation: navItemFadeIn 0.5s ease forwards;
    }

    .mheader .bar .bar_btn .nav-item:nth-child(1) {
        animation-delay: 0.1s;
    }

    .mheader .bar .bar_btn .nav-item:nth-child(2) {
        animation-delay: 0.2s;
    }

    .mheader .bar .bar_btn .nav-item:nth-child(3) {
        animation-delay: 0.3s;
    }

    @media screen and (max-width: 768px) {
        .mheader .bar .bar_btn {
            display: none;
        }
        
        .mobile-menu-btn {
            display: flex;
            flex-direction: column;
            justify-content: space-around;
            width: 30px;
            height: 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 101;
        }
        
        .mobile-menu-btn span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: #333;
            transition: all 0.3s ease;
        }
        
        .sidebar {
            position: fixed;
            top: 0;
            right: -300px;
            width: 250px;
            height: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            z-index: 100;
            transition: right 0.3s ease;
            padding-top: var(--mheader_height);
            overflow-y: auto;
        }
        
        .sidebar.open {
            right: 0;
        }
        
        .sidebar .nav-item {
            display: flex;
            align-items: center;
            padding: 15px 20px;
            color: #333;
            text-decoration: none;
            font-size: 16px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .sidebar .nav-item .menu-icon {
            margin-right: 10px;
            font-size: 18px;
        }
        
        .sidebar .nav-item:hover {
            background: rgba(0, 82, 217, 0.1);
            color: var(--color_0052d9);
        }
        
        .sidebar .nav-item.active {
            color: var(--color_0052d9);
            background: rgba(0, 82, 217, 0.1);
        }
        
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        
        .overlay.open {
            opacity: 1;
            visibility: visible;
        }
        
        .mobile-menu-btn.open span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        
        .mobile-menu-btn.open span:nth-child(2) {
            opacity: 0;
        }
        
        .mobile-menu-btn.open span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }
    }

    @media screen and (min-width: 769px) {
        .mobile-menu-btn {
            display: none;
        }
        
        .sidebar, .overlay {
            display: none;
        }
    }