/* Base Styles */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Arial', sans-serif;
    }

    body {
        line-height: 1.6;
    }

    /* Header */
    header {
        background: #1a2b3c;
        color: white;
        padding: 1rem;
        position: fixed;
        width: 100%;
        top: 0;
        z-index: 1000;
    }

    nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1200px;
        margin: 0 auto;
    }

    .logo {
        font-size: 1.5rem;
        font-weight: bold;
    }

    .nav-links {
        display: flex;
        gap: 2rem;
    }

    .nav-links a {
        color: white;
        text-decoration: none;
    }

    /* Hero Section */
    .hero {
        height: 80vh;
        background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)),
                    url('mining-hero.jpg') center/cover;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        color: white;
        margin-top: 60px;
    }

    .hero h1 {
        font-size: 3.5rem;
        margin-bottom: 1rem;
    }

    /* Services Section */
    /* .services {
        padding: 4rem 2rem;
        background: #f9f9f9;
    }

    .services-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 2rem;
        max-width: 1200px;
        margin: 0 auto;
    }

    .service-card {
        background: white;
        padding: 2rem;
        border-radius: 5px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        text-align: center;
    }

    .service-card i {
        font-size: 2.5rem;
        color: #1a2b3c;
        margin-bottom: 1rem;
    } */

    /* Why Choose Us */
    .why-us {
        padding: 4rem 2rem;
        background: #1a2b3c;
        color: white;
    }

    /* Footer */
    footer {
        background: #0d1721;
        color: white;
        padding: 3rem 2rem;
        text-align: center;
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 2rem;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .nav-links {
            display: none;
        }
        
        .hero h1 {
            font-size: 2.5rem;
        }
    }

    /* Service Sections */
    .service-section {
        max-width: 1200px;
        margin: 4rem auto;
        padding: 0 2rem;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }

    .service-card {
        background: #fff;
        border-radius: 8px;
        padding: 2rem;
        box-shadow: 0 2px 15px rgba(0,0,0,0.08);
        border-left: 4px solid #e9b824;
        break-inside: avoid;
    }

    /* USP Card spans both columns */
    .usp-card {
        grid-column: 1 / -1;
        background: #1a2b3c;
        color: white;
        padding: 2rem;
        border-radius: 8px;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .service-section {
            grid-template-columns: 1fr;
        }
        
        .service-card {
            padding: 1.5rem;
        }
    }

    /* Existing styles remain, add these modifications */
    .columns {
        column-count: 2;
        column-gap: 2rem;
    }

    @media (max-width: 480px) {
        .columns {
            column-count: 1;
        }
    }

    .service-section2 {
        max-width: 1200px;
        margin: 4rem auto;
        padding: 0 2rem;
    }

    .service-card2 {
        background: #fff;
        border-radius: 8px;
        padding: 2rem;
        margin-bottom: 2rem;
        box-shadow: 0 2px 15px rgba(0,0,0,0.08);
        border-left: 4px solid #e9b824;
    }

    .service-card h2 {
        color: #1a2b3c;
        font-size: 1.8rem;
        margin-bottom: 0.5rem;
    }

    .service-subtitle {
        color: #6c757d;
        font-weight: 600;
        margin-bottom: 1.5rem;
        position: relative;
        padding-bottom: 0.5rem;
    }

    .service-subtitle::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 50px;
        height: 2px;
        background: #e9b824;
    }

    .service-list {
        padding-left: 1.5rem;
        color: #4a5568;
    }

    .service-list li {
        margin-bottom: 0.8rem;
        line-height: 1.6;
    }

    .grade-list {
        padding-left: 1.5rem;
        margin: 0.5rem 0;
    }

    .grade-list li {
        color: #2c5282;
        font-size: 0.95rem;
    }

    .equipment-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
        list-style: none;
        padding: 0;
    }

    .equipment-grid li {
        background: #f8f9fa;
        padding: 0.8rem;
        text-align: center;
        border-radius: 4px;
        font-weight: 500;
    }

    .usp-card {
        background: #1a2b3c;
        color: white;
        padding: 2rem;
        border-radius: 8px;
    }

    .usp-list {
        list-style: none;
        padding: 0;
    }

    .usp-list li {
        padding: 0.8rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        position: relative;
        padding-left: 2rem;
    }

    .usp-list li::before {
        content: '✓';
        color: #48bb78;
        position: absolute;
        left: 0;
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .service-card {
            padding: 1.5rem;
        }
        
        .service-card h2 {
            font-size: 1.5rem;
        }
        
        .equipment-grid {
            grid-template-columns: 1fr 1fr;
        }
    }