body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.hero {
    background-color: #121212;
    color: white;
    padding: 100px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: bold;
}

.section-title {
    color: white;
    margin-bottom: 40px;
    text-align: center;
}

.testimonial-card {
    background: #141414;
    color: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    height: 100%;
}

.certificate-section {
    background: #f0f8ff;
    padding: 60px 20px;
    text-align: center;
}