* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to bottom, #e6f0ff, #f2f2f2);
}
.wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}
[class*="col-"] {
    padding: 0 15px;
}
.col-12 { flex: 0 0 100%; max-width: 100%; }
@media (min-width: 768px) {
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-4 { flex: 0 0 33.33%; max-width: 33.33%; }
}
header, footer, section {
    padding: 20px 0;
}
header nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 20px;
}
header nav ul ul {
    display: none;
    position: absolute;
    background: #007BFF;
    padding: 10px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}
header nav ul ul li a {
    color: #fff;
    display: block;
    padding: 5px 10px;
}
header nav ul ul li a:hover {
    background-color: #0056b3;
}
header nav ul li:hover ul {
    display: block;
}
header nav ul li {
    position: relative;
}
header nav a {
    text-decoration: none;
    color: #007BFF;
}
.hero {
    background: url('https://images.unsplash.com/photo-1502672260266-1c1ef2d93688?auto=format&fit=crop&w=1600&q=80') no-repeat center center/cover;
    color: white;
    padding: 60px 0;
    text-align: center;
}
.hero .wrapper {
    position: relative;
    z-index: 1;
}
.hero h2 {
    font-size: 32px;
    margin-bottom: 20px;
}
.hero a.cta-button {
    background-color: #0056b3;
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
}
footer ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: 20px;
}
footer a {
    text-decoration: none;
    color: #007BFF;
}
.tracking-summary {
    background: #f0f4f8;
    padding: 20px;
    margin-top: 20px;
    border-radius: 8px;
}
@media (max-width: 768px) {
    header nav ul {
        flex-direction: column;
        gap: 10px;
    }
    footer ul {
        flex-direction: column;
        gap: 10px;
    }
    .hero h2 {
        font-size: 24px;
    }
}