body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 20px 0;
}
.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    max-width: 200px;
}
h1 {
    color: #c5050c;
    margin: 0;
}
.navbar {
    background-color: #c5050c;
    padding: 10px 0;
}
.navbar a {
    color: #fff;
    text-decoration: none;
    padding: 10px 15px;
    transition: background-color 0.3s;
}
.navbar a:hover, .navbar a.active {
    background-color: #990000;
}
.main {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-top: 20px;
    padding: 20px;
}
.event {
    border-bottom: 1px solid #eee;
    padding: 20px 0;
}
.event:last-child {
    border-bottom: none;
}
.event-title {
    font-size: 1.2em;
    font-weight: bold;
    color: #c5050c;
}
.event-info p {
    margin: 10px 0;
}
details {
    margin-top: 10px;
}
summary {
    
    cursor: pointer;
    color: #4f4dff;
    font-weight: bold;
}
.abstract-content {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 4px;
    margin-top: 10px;
}