* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.breadcrumb {
    margin-bottom: 20px;
}

.breadcrumb a {
    color: #0073bb;
    text-decoration: none;
    font-size: 14px;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

h1 {
    font-size: 28px;
    font-weight: 700;
    color: #232f3e;
    margin-bottom: 20px;
    line-height: 1.3;
}

.event-meta {
    margin-bottom: 20px;
}

.venue {
    font-size: 18px;
    font-weight: 600;
    color: #0073bb;
    margin-bottom: 5px;
}

.audience {
    font-size: 16px;
    color: #666;
}

.event-details {
    display: flex;
    gap: 40px;
    margin-bottom: 30px;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 8px;
    align-items: flex-start;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 30px;
    flex: 1;
    max-width: 60%;
}

.register-button-container {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.register-button-container .register-button {
    width: 250px;
}

.register-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.register-button {
    display: inline-block;
    background-color: #ff9900;
    color: white;
    padding: 15px 25px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: background-color 0.3s ease;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(255, 153, 0, 0.3);
    width: 250px;
    text-align: center;
}

.register-button:hover {
    background-color: #e88900;
    text-decoration: none;
    color: white;
}

.bottom-register {
    text-align: center;
    margin-top: 40px;
    padding: 30px 0;
    border-top: 2px solid #e0e0e0;
}

.speaker-info {
    font-size: 14px;
    color: #666;
    font-weight: normal;
    font-style: italic;
}

.detail-item {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
}

.label {
    font-weight: 600;
    color: #232f3e;
    margin-bottom: 5px;
}

.value {
    color: #666;
}

.event-info {
    margin-top: 30px;
}

.info-section {
    margin-bottom: 30px;
}

.info-section h3 {
    font-size: 20px;
    font-weight: 700;
    color: #232f3e;
    margin-bottom: 15px;
    border-bottom: 2px solid #ff9900;
    padding-bottom: 5px;
}

.info-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: #232f3e;
    margin: 20px 0 10px 0;
}

.info-section p {
    margin-bottom: 15px;
    color: #333;
}

.info-section ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.info-section li {
    margin-bottom: 8px;
    color: #333;
}

.agenda {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
}

.agenda-item {
    display: flex;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.agenda-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.time {
    font-weight: 600;
    color: #0073bb;
    min-width: 120px;
    margin-right: 20px;
}

.content {
    flex: 1;
    color: #333;
}

.speakers {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
}

.speaker {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #e0e0e0;
}

.speaker:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.speaker h4 {
    font-size: 18px;
    font-weight: 600;
    color: #0073bb;
    margin-bottom: 10px;
}

.speaker p {
    margin-bottom: 10px;
    color: #333;
}

.speaker strong {
    color: #232f3e;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .event-details {
        flex-direction: column;
        gap: 20px;
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .register-button {
        width: 100%;
        text-align: center;
    }
    
    .agenda-item {
        flex-direction: column;
    }
    
    .time {
        min-width: auto;
        margin-right: 0;
        margin-bottom: 5px;
    }
}