body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f5f5f5;
    color: #333;
}

/* Navigation */
nav {
    background: #ffffff;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1000px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

.logo {
    font-weight: bold;
    font-size: 20px;
}

.nav-buttons a {
    display: inline-block;
    margin-left: 10px;
    padding: 8px 15px;
    border: 1px solid #0077cc;
    border-radius: 5px;
    text-decoration: none;
    color: #0077cc;
    font-weight: bold;
    transition: 0.2s;
}

.nav-buttons a:hover {
    background: #0077cc;
    color: #fff;
}

/* Sections */
.section {
    max-width: 900px;
    margin: 40px auto;
}

.boxed {
    background: #ffffff;
    padding: 30px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* Section Headers */
.section-header {
    text-align: center;
    background: #f0f8ff;
    padding: 15px 10px;
    margin-bottom: 20px;
    border-radius: 5px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.section-header h2 {
    margin: 0;
    font-size: 24px;
    color: #0077cc;
}

/* Cards inside sections */
.card {
    background: #ffffff;
    padding: 20px;
    margin-top: 20px;
    border-radius: 6px;
    border: 1px solid #ddd;
}

/* Intro content */
.intro h1 {
    text-align: center;
    margin-bottom: 10px;
}

.intro h3 {
    text-align: center;
    margin-top: 0;
    color: #555;
}

.intro p {
    text-align: center;
    color: #666;
}