* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    background-color: #f3f2ef;
    font-family: Arial, sans-serif;
}

.top-header {
    height: 80px;
    background: linear-gradient(90deg, #0b2a4a, #143d66);
    display: flex;
    align-items: center;
}

.header-container {
    width: 100%;
    padding: 0 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.logo {
    min-width: 180px;
}

.logo img {
    max-height: 70px;
    transform: scale(2);
    transform-origin: left center;
}

.header-text {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: #cfd8e3;
    font-size: 18px;
    letter-spacing: 0.5px;
}

.menu-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    background: none;
    border: none;
    cursor: pointer;
    color: #fff;
}

.menu-text {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.2px;
}

.menu-icon {
    width: 18px;
    height: 18px;
    fill: #fff;
    opacity: 0.85;
    transition: opacity 0.2s ease;
}

.menu-toggle:hover .menu-icon {
    opacity: 1;
}

.systems-panel {
    position: absolute;
    top: 100%;
    right: 40px;
    width: 280px;
    background: linear-gradient(180deg, #0b2f4a, #09263d);
    border-radius: 12px;
    padding: 16px 0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);

    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: all 0.25s ease;
}

.systems-panel.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.systems-panel a {
    display: block;
    padding: 12px 18px;
    color: #e6edf3;
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 0.5px;
    border-left: 3px solid transparent;
}

.systems-panel a:hover {
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid #4da3ff;
}


.system-section {
    padding: 90px 8%;
    background: #f3f2ef;
}

.system-title {
    text-align: center;
    font-size: 28px;
    letter-spacing: 2px;
    margin-bottom: 60px;
    color: #0b2a4a;
    text-transform: uppercase;
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.system-card {
    text-decoration: none;
    color: #0b2a4a;
    background: #fff;
    padding: 18px;
    border: 1px solid #d9dee4;
    transition: all 0.3s ease;
}

.system-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    margin-bottom: 15px;
}

.system-card h3 {
    font-size: 16px;
    margin-bottom: 6px;
}

.system-card p {
    font-size: 13px;
    color: #555;
}

.system-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
}


@media (max-width: 1024px) {
    .system-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .system-grid {
        grid-template-columns: 1fr;
    }
}

.section-divider {
    width: 100%;
    height: 2px;
    background: linear-gradient(to right,
            transparent,
            #0b2a4a,
            transparent);
    margin: 90px 0;
}