.feature-card {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
    height: 100%;
}
.feature-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
}
.timeline {
    position: relative;
    padding-left: 30px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #007bff;
}
.timeline-item {
    position: relative;
    margin-bottom: 30px;
}
.timeline-year {
    position: absolute;
    left: -30px;
    top: 0;
    background: #007bff;
    color: white;
    padding: 5px 10px;
    border-radius: 15px;
    font-weight: bold;
    font-size: 0.9em;
}
.timeline-content {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    margin-left: 20px;
}
.distribution-family {
    margin-bottom: 30px;
}
.distro-card {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    height: 100%;
}
.distro-card h5 {
    color: #007bff;
    margin-bottom: 10px;
}
.distro-card code {
    background: #f8f9fa;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}
.tech-stack {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
}
.application-area {
    margin-bottom: 30px;
}
.comparison-table td {
    vertical-align: top;
}
.code-example {
    background: #f8f9fa;
    border-left: 3px solid #007bff;
    padding: 8px;
    margin-top: 8px;
    border-radius: 0 4px 4px 0;
}
.command-card {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
    height: 100%;
}
.command-card pre {
    margin: 0;
    background: #f8f9fa;
}
.alert {
    border-left: 4px solid;
}
.alert-info {
    border-left-color: #17a2b8;
}
.alert-success {
    border-left-color: #28a745;
}
.table th {
    background-color: #f8f9fa;
}