body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #343a40;
    line-height: 1.7;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 960px;
    margin: 30px auto;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.07);
    padding: 30px 40px;
}

h1 {
    color: #0056b3;
    text-align: center;
    margin-bottom: 15px;
    border-bottom: 2px solid #dee2e6;
    padding-bottom: 10px;
}

h2 {
    color: #17a2b8;
    margin-top: 35px;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 1px solid #ced4da;
}

h3 {
    color: #6c757d;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 12px;
}

.back-link {
    display: inline-block;
    margin-bottom: 25px;
    color: #007bff;
    text-decoration: none;
    padding: 8px 15px;
    border: 1px solid #007bff;
    border-radius: 5px;
    transition: background-color 0.3s, color 0.3s;
}

.back-link:hover {
    background-color: #007bff;
    color: #fff;
}

.address-type-section {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #fdfdfd;
    border: 1px solid #e9ecef;
    border-radius: 6px;
}

.sub-type {
    margin-left: 20px;
    padding-left: 15px;
    border-left: 3px solid #adb5bd;
    margin-bottom: 20px;
}

code {
    background-color: #e9ecef;
    color: #c7254e;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
}

ul {
    padding-left: 25px;
    margin-top: 5px;
}

li {
    margin-bottom: 8px;
}