* { box-sizing: border-box; margin: 0; padding: 0; }
    body { 
        font-family: Arial, Helvetica, sans-serif; 
        line-height: 1.6; 
        color: #333;
        background-color: #8fa5ba;
        background-image: 
            linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.1) 75%, rgba(255,255,255,0.1)), 
            linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.1) 75%, rgba(255,255,255,0.1));
        background-size: 10px 10px;
        background-position: 0 0, 5px 5px;
    }
    
    header { 
        background: linear-gradient(to bottom, #0a1321 0%, #132239 100%); 
        color: #fff; 
        position: sticky; top: 0; z-index: 2000; 
        box-shadow: 0 2px 10px rgba(0,0,0,0.4); 
        border-bottom: 1px solid #09101a; 
        width: 100%;
    }
    
    .nav-container { 
        display: flex; 
        justify-content: space-between; 
        align-items: center; 
        padding: 10px 20px; 
        width: 100%; 
    }
    
    .logo { display: flex; align-items: center; text-decoration: none; }
    .logo img { height: 40px; width: auto; display: block; }
    
    .menu-toggle { display: flex; flex-direction: column; cursor: pointer; z-index: 2001; }
    .menu-toggle span { width: 25px; height: 3px; background-color: #fff; margin: 2px 0; border-radius: 2px;}
    
    .menu-overlay {
        position: fixed;
        top: 0; left: 0; width: 100%; height: 100%;
        background: rgba(0,0,0,0.6);
        z-index: 1998;
        visibility: hidden;
        opacity: 0;
        transition: opacity 0.4s ease, visibility 0.4s;
    }
    .menu-overlay.active {
        visibility: visible;
        opacity: 1;
    }

    .nav-links { 
        display: flex; 
        flex-direction: column; 
        position: fixed;
        top: 0;
        left: -320px; 
        width: 280px; 
        height: 100vh;
        background-color: #1a3b66; 
        background-image: url('images/topmenu_bg.png');
        background-size: cover; 
        background-repeat: no-repeat;
        z-index: 1999;
        transition: left 0.4s ease; 
        padding-top: 70px; 
        box-shadow: 4px 0 15px rgba(0,0,0,0.5);
        overflow-y: auto; 
    }
    
    .nav-links.active { 
        left: 0; 
    }

    .close-btn {
        position: absolute;
        top: 15px;
        right: 20px;
        font-size: 32px;
        color: #fff;
        cursor: pointer;
        line-height: 1;
    }
    
    .nav-links a.menu-item { 
        color: #fff; 
        text-decoration: none; 
        padding: 12px 20px; 
        border-bottom: 1px solid rgba(255,255,255,0.1); 
        font-size: 0.95rem; 
        transition: 0.3s; 
    }
    
    .nav-links a.menu-item:hover { 
        background-image: url('images/topmenu_over.jpg');
        background-size: 100% 100%;
        padding-left: 25px; 
    }

    .note-block {
        margin-top: 15px;
        padding: 20px;
        border-top: 1px solid rgba(0,0,0,0.2);
    }
    .note-block h3 {
        color: #fff;
        font-size: 1.1rem;
        margin-bottom: 15px;
        text-transform: uppercase;
        border-bottom: 1px dashed rgba(255,255,255,0.3);
        padding-bottom: 5px;
    }
    .note-block a {
        background: transparent !important;
        border: none !important;
        padding: 5px 0 !important;
        font-size: 0.9rem;
        color: #ddd;
        text-decoration: none;
        display: block;
        transition: 0.3s;
    }
    .note-block a:hover {
        color: #fff;
        padding-left: 5px !important;
    }

    .banner-top { display: none !important; }

    @media(min-width: 768px) {
        .banner-top { display: flex !important; }
        
        .close-btn, .menu-overlay { display: none !important; }
        .note-block { display: none !important; } 

        .nav-links {
            display: none; 
            position: absolute;
            top: 100%;
            left: 0 !important; 
            width: 100%;
            height: auto;
            padding-top: 0;
            box-shadow: none;
            transition: none;
            overflow-y: visible;
        }

        .nav-links.active {
            display: flex;
            flex-direction: row; 
            justify-content: center; 
            background-color: #1a3b66; 
            background-image: url('images/topmenu_bg.png');
            background-size: 100% 100%;
            box-shadow: 0 4px 6px rgba(0,0,0,0.2); 
            border-top: none;
        }
        
        .nav-links a.menu-item { 
            border-bottom: none; 
            border-right: 1px solid #112a4d; 
            padding: 15px 25px; 
            white-space: nowrap; 
            background: transparent;
        }
        .nav-links a.menu-item:last-child { border-right: none; }
        
        .nav-links a.menu-item:hover {
            background-image: url('images/topmenu_over.jpg');
            background-size: 100% 100%;
            padding: 15px 25px; 
        }
        
        .logo img { height: 50px; }
    }

    .responsive-img {
        max-width: 100%; height: auto; display: block; margin: 15px auto; border-radius: 4px;
    }

    .site-footer {
        background: linear-gradient(to top, #111 0%, #1a3b66 100%); 
        padding: 20px; 
        margin-top: 30px; 
        border-top: 2px solid #6888a8;
        width: 100%;
    }

    @media(min-width: 992px) {
        body:has(.main-container) header,
        body:has(.main-container) .site-footer {
            width: 80% !important;
            max-width: 80% !important;
            margin: 0 auto !important;
            border-radius: 8px; 
        }

        body:has(.service-content) header,
        body:has(.service-content) .site-footer {
            width: 100% !important;
            max-width: 1200px !important;
            margin: 0 auto !important;
            border-radius: 8px;
        }
    }