:root {
    --primary-color: #2c3e50;
    --secondary-color: #e67e22;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

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

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

.section-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 2px;
}

footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
}

.introduction {
    padding: 60px 0;
    background: var(--light-bg);
    text-align: center;
}

.introduction h2 {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.introduction p {
    font-size: 1.2em;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}