.jm-container{
    display:grid;
    grid-template-columns:280px 1fr;
    gap:30px;
    max-width:1400px;
    margin:40px auto;
    padding:0 20px;
}

.jm-sidebar{
    background:#fff;
    border:1px solid #e5e5e5;
    padding:25px;
}

.jm-sidebar h3{
    margin-bottom:20px;
}

.jm-sidebar ul{
    list-style:none;
    margin:0;
    padding:0;
}

.jm-sidebar li{
    margin-bottom:12px;
}

.jm-sidebar li.active a{
    color:#005f8d;
    font-weight:700;
}

.jm-sidebar a{
    text-decoration:none;
}

.jm-content{
    background:#fff;
}

.jm-header{
    display:flex;
    gap:30px;
    align-items:flex-start;
    margin-bottom:30px;
}

.jm-cover img{
    width:100px;
    height:auto;
}

.jm-info h1{
    margin:0;
    font-size:42px;
    line-height:1.2;
}

.jm-meta{
    margin-top:10px;
    color:#666;
}

.jm-tabs{
    display:flex;
    gap:10px;
    margin:30px 0;
}

.jm-tabs button{
    padding:12px 20px;
    border:none;
    background:#eee;
    cursor:pointer;
}

.jm-tabs button.active{
    background:#005f8d;
    color:#fff;
}

.jm-tab{
    display:none;
}

.jm-tab.active{
    display:block;
}

.jm-search{
    display:flex;
    gap:10px;
    margin-bottom:20px;
}

.jm-search input{
    flex:1;
    padding:12px;
}

.jm-search button{
    padding:12px 25px;
}

.jm-download{
    display:inline-block;
    margin-top:20px;
    background:#005f8d;
    color:#fff;
    padding:12px 24px;
    text-decoration:none;
}

.jm-article-item{
    border:1px solid #ddd;
    margin-bottom:12px;
    border-radius:6px;
    overflow:hidden;
}

.jm-article-header{
    padding:15px 20px;
    background:#f8f8f8;
    cursor:pointer;
    display:flex;
    gap:10px;
    align-items:center;
}

.jm-author{
    font-weight:600;
    color:#005f8d;
}

.jm-title{
    font-weight:700;
}

.jm-article-content{
    display:none;
    padding:20px;
    line-height:1.7;
    background:#fff;
}

.jm-article-item.open .jm-article-content{
    display:block;
}

.jm-search{
    margin-bottom:20px;
}

.jm-search input{
    width:100%;
    padding:12px;
    border:1px solid #ddd;
    border-radius:4px;
}

@media(max-width:991px){

    .jm-container{
        grid-template-columns:1fr;
    }

    .jm-header{
        flex-direction:column;
    }

    .jm-info h1{
        font-size:30px;
    }

    .jm-tabs{
        flex-wrap:wrap;
    }

}

/* Desktop */
.jm-menu-toggle{
    display:none;
}

.jm-overlay{
    display:none;
}
/* Mobile */
@media(max-width:991px){

    .jm-menu-toggle{
        display:block;
        width:100%;
        margin-bottom:15px;
        background:#005b8c;
        color:#fff;
        border:none;
        padding:14px;
        border-radius:6px;
        cursor:pointer;
        font-size:16px;
        font-weight:600;
    }

    .jm-sidebar{

        position:fixed;
        top:0;
        left:-320px;
        width:300px;
        height:100vh;

        background:#fff;
        z-index:9999;

        overflow-y:auto;

        transition:all .3s ease;

        box-shadow:0 0 20px rgba(0,0,0,.15);

        padding:25px;

    }

    .jm-sidebar.open{

        left:0;

    }

    .jm-overlay{

        position:fixed;
        inset:0;

        background:rgba(0,0,0,.5);

        opacity:0;
        visibility:hidden;

        transition:.3s;

        z-index:9998;

    }

    .jm-overlay.open{

        opacity:1;
        visibility:visible;

    }

}

/* =====================================
   AER Style Academic Menu
===================================== */

.jm-menu{
    display:flex;
    align-items:center;
    gap:0;
    list-style:none;
    margin:10px 0;
    padding:0;
    border-bottom:1px solid #dfe6eb;
}

.jm-menu > li{
    position:relative;
}

.jm-menu > li > a,
.jm-dropdown-toggle{

    display:flex;
    align-items:center;

    background:none;
    border:none;

    cursor:pointer;

    padding:18px 24px;

    color:#005b8c;

    font-weight:500;

    text-decoration:none;

    transition:.2s;
}

.jm-menu > li:hover > a,
.jm-menu > li:hover > .jm-dropdown-toggle{

    background:#f6f9fb;

}

/* Arrow */

.jm-dropdown-toggle::after{

    content:"▼";

    font-size:10px;

    margin-left:10px;

    transition:.2s;

}

.jm-dropdown:hover .jm-dropdown-toggle::after{

    transform:rotate(180deg);

}

/* Dropdown */

.jm-submenu{

    position:absolute;

    top:100%;
    left:0;

    min-width:340px;

    background:#fff;

    list-style:none;

    padding:0;
    margin:0;

    display:none;

    box-shadow:
    0 10px 30px rgba(0,0,0,.15);

    z-index:9999;

}

.jm-dropdown:hover .jm-submenu{

    display:block;

}

.jm-submenu li{

    width:100%;

}

.jm-submenu a{

    display:block;

    padding:10px 10px;

    text-decoration:none;

    color:#666;


    transition:.2s;

}

.jm-submenu a:hover{

    background:#f7fbff;

    color:#005b8c;

}

/* Active Item */

.jm-submenu a.active,
.jm-menu > li > a.active{

    color:#005b8c;

    font-weight:700;

}

/* Content Area */

.jm-section{

    display:none;

    background:#fff;

    padding:10px;


}

.jm-section.active{

    display:block;

}

/* Mobile */

@media(max-width:991px){

    .jm-menu{

        flex-direction:column;
        align-items:stretch;

    }

    .jm-menu > li{

        width:100%;

    }

    .jm-menu > li > a,
    .jm-dropdown-toggle{

        width:100%;
        justify-content:space-between;

        font-size:14px;

        padding:5px;

    }

    .jm-submenu{

        position:static;

        display:none;

        box-shadow:none;

        border-left:3px solid #005b8c;

        min-width:auto;

    }

    .jm-dropdown.open .jm-submenu{

        display:block;

    }

}