```css
:root {
    --dark-blue: #0B3D91;
    --dark-blue-hover: #082F70;
    --white: #FFFFFF;
    --border: #E5E7EB;
}


/* HEADER */

.site-header {
    width: 100%;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);

    position: sticky;
    top: 0;
    z-index: 1000;
}


/* HEADER CONTAINER */

.header-container {
    max-width: 1280px;
    height: 82px;

    margin: 0 auto;
    padding: 0 25px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}


/* LOGO */

.logo-link {
    display: flex;
    align-items: center;
}

.company-logo {
    width: 190px;
    height: auto;
    display: block;
}


/* DESKTOP NAVIGATION */

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}


/* NAVIGATION LINKS */

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;

    color: var(--dark-blue);

    text-decoration: none;

    font-size: 15px;
    font-weight: 500;

    transition: 0.25s ease;
}

.nav-link i {
    color: var(--dark-blue);
    font-size: 15px;
}

.nav-link:hover {
    color: var(--dark-blue-hover);
}

.nav-link:hover i {
    color: var(--dark-blue-hover);
}


/* LOGIN */

.login-btn {
    display: flex;
    align-items: center;
    gap: 8px;

    padding: 11px 19px;

    background: var(--dark-blue);
    color: #FFFFFF;

    border-radius: 7px;

    text-decoration: none;

    font-size: 15px;
    font-weight: 600;

    transition: 0.25s ease;
}

.login-btn i {
    color: #FFFFFF;
}

.login-btn:hover {
    background: var(--dark-blue-hover);
}


/* MOBILE BUTTON */

.mobile-menu-button {
    display: none;

    border: none;
    background: transparent;

    color: var(--dark-blue);

    font-size: 25px;

    cursor: pointer;
}


/* MOBILE MENU */

.mobile-menu {
    display: none;

    background: #FFFFFF;

    border-top: 1px solid var(--border);

    padding: 15px 20px 20px;
}


/* MOBILE LINKS */

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 13px;

    padding: 13px;

    color: var(--dark-blue);

    text-decoration: none;

    font-size: 15px;
    font-weight: 500;

    border-radius: 7px;
}

.mobile-nav-link i {
    width: 20px;
}

.mobile-nav-link:hover {
    background: #EFF5FF;
}


/* MOBILE LOGIN */

.mobile-login-btn {
    display: flex;
    align-items: center;
    gap: 13px;

    padding: 13px;

    margin-top: 8px;

    background: var(--dark-blue);
    color: #FFFFFF;

    text-decoration: none;

    border-radius: 7px;

    font-weight: 600;
}

.mobile-login-btn i {
    width: 20px;
}


/* TABLET */

@media (max-width: 900px) {

    .desktop-nav {
        gap: 18px;
    }

    .company-logo {
        width: 170px;
    }
}


/* MOBILE */

@media (max-width: 768px) {

    .header-container {
        height: 72px;
        padding: 0 18px;
    }

    .desktop-nav {
        display: none;
    }

    .mobile-menu-button {
        display: block;
    }

    .company-logo {
        width: 160px;
    }

    .mobile-menu.show {
        display: block;
    }
}


/* SMALL PHONES */

@media (max-width: 480px) {

    .company-logo {
        width: 145px;
    }

    .header-container {
        padding: 0 15px;
    }
}
```