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

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    background-color: #FFFFFF; /* Pure White Background */
    color: #333333; /* Dark Gray Text */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    color: #1a1a1a;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.light-bg {
    background-color: #F8F8F8; /* Light Gray background for contrast */
}

.main-header {
    background-color: #FFFFFF;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 0;
}

.logo {
    font-size: 1.9rem;
    font-weight: 700;
    color: #007bff; /* Blue highlight for logo */
}

.logo .ltd {
    font-size: 1.1rem;
    font-weight: 400;
    color: #555555;
}

.main-nav a {
    color: #555555;
    text-decoration: none;
    margin-left: 30px;
    font-size: 1rem;
    font-weight: 400;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: #007bff;
}

.contact-btn {
    border: 1px solid #007bff;
    padding: 8px 18px;
    border-radius: 5px;
    font-weight: 600;
    color: #007bff;
    transition: background-color 0.3s, color 0.3s;
}

.contact-btn:hover {
    background-color: #007bff;
    color: #FFFFFF;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
    height: 24px;
    width: 30px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333333;
    border-radius: 1px;
    transition: all 0.3s ease-in-out;
}

.hero-section {
    padding: 160px 0;
    text-align: center;
    background-color: #F8F8F8; /* Slightly off-white for hero */
    border-bottom: 1px solid #EAEAEA;
}

.hero-section h2 {
    font-size: 3.8rem;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.2;
    color: #1a1a1a;
}

.hero-section h2 b {
    color: #007bff; /* Highlighted Keywords */
}

.hero-section p {
    font-size: 1.3rem;
    margin-bottom: 50px;
    color: #555555;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background-color: #007bff;
    color: #FFFFFF;
    padding: 14px 35px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: background-color 0.3s, transform 0.2s;
}

.cta-button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.secondary-btn {
    background-color: #f0f0f0;
    color: #007bff;
    border: 1px solid #007bff;
}

.secondary-btn:hover {
    background-color: #007bff;
    color: #fff;
}

.content-section {
    padding: 100px 0;
    border-bottom: 1px solid #EAEAEA;
}

.content-section:last-of-type {
    border-bottom: none;
}

.content-section h3 {
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 20px;
    color: #1a1a1a;
    font-weight: 700;
}

.section-subtext {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 60px;
    color: #666666;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-item {
    padding: 35px;
    border: 1px solid #EAEAEA;
    border-radius: 8px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.product-item h4 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #007bff;
    font-weight: 600;
}

.product-item p {
    color: #666666;
    font-size: 1.05rem;
}

.company-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444444;
}

.company-info-grid p b {
    color: #007bff;
    font-weight: 600;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-item {
    display: block;
    text-decoration: none;
    padding: 25px;
    border: 1px solid #EAEAEA;
    border-radius: 8px;
    background-color: #FFFFFF;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.news-item h4 {
    font-size: 1.3rem;
    color: #333333;
    margin-bottom: 10px;
    font-weight: 600;
}

.news-item p.news-date {
    font-size: 0.9rem;
    color: #999999;
}

.career-promo {
    text-align: center;
    padding: 40px;
    background-color: #F8F8F8;
    border-radius: 8px;
    border: 1px solid #EAEAEA;
    max-width: 800px;
    margin: 0 auto;
}

.career-promo p {
    font-size: 1.2rem;
    color: #555555;
    margin-bottom: 30px;
    line-height: 1.7;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #DDDDDD;
    border-radius: 5px;
    font-size: 1rem;
    font-family: 'Open Sans', sans-serif;
    color: #333333;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

.contact-form textarea {
    resize: vertical; 
}

.main-footer {
    background-color: #F8F8F8;
    padding: 60px 0 30px 0;
    border-top: 1px solid #EAEAEA;
    color: #666666;
    font-size: 0.95rem;
}

.main-footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    padding-bottom: 40px;
    border-bottom: 1px solid #EAEAEA;
}

.footer-col .footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #007bff;
    margin-bottom: 15px;
}

.footer-col h4 {
    font-size: 1.1rem;
    color: #333333;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #666666;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: #007bff;
}

.copyright {
    text-align: center;
    padding-top: 25px;
    font-size: 0.85rem;
    color: #999999;
}

@media (max-width: 992px) { /* Tablet and smaller */
    .hero-section h2 {
        font-size: 3rem;
    }
    .hero-section p {
        font-size: 1.1rem;
    }
    .content-section h3 {
        font-size: 2.3rem;
    }
    .section-subtext {
        font-size: 1.1rem;
    }
    .company-info-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) { /* Mobile */
    .main-header .container {
        padding: 15px 15px;
    }

    .main-nav {
        display: none; 
        flex-direction: column;
        width: 100%;
        text-align: center;
        background-color: #FFFFFF;
        position: absolute;
        top: 60px; 
        left: 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.05);
        padding-bottom: 10px;
    }
    
    .main-nav a {
        margin: 10px 0;
        padding: 10px 0;
        border-bottom: 1px solid #EAEAEA;
        font-size: 1.1rem;
    }
    .main-nav a:last-child {
        border-bottom: none;
    }

    .menu-toggle {
        display: flex; 
    }

    .main-nav.active {
        display: flex; 
    }

    .hero-section {
        padding: 120px 0 80px 0;
    }
    
    .hero-section h2 {
        font-size: 2.5rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .content-section {
        padding: 60px 0;
    }

    .content-section h3 {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    .section-subtext {
        font-size: 1rem;
        margin-bottom: 40px;
    }

    .product-grid, .news-grid {
        grid-template-columns: 1fr; 
        gap: 25px;
    }
    
    .footer-col {
        text-align: center;
    }

    .main-footer .container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-col ul {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}