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

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

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    text-align: center;
    padding: 60px 0 40px;
    border-bottom: 1px solid #e1e5e9;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 2.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
    line-height: 1.3;
}

.subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    font-weight: 400;
}

.author {
    font-size: 1rem;
    color: #666;
    margin-bottom: 10px;
}

.venue {
    font-size: 0.95rem;
    color: #6b7280;
    font-weight: 500;
    margin-bottom: 30px;
}

.workshop-highlight {
    background-color: #fef3c7;
    color: #92400e;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border: 1px solid #d1d5db;
}

.btn-primary {
    background-color: #111827;
    color: white;
    border-color: #111827;
}

.btn-primary:hover {
    background-color: #374151;
    border-color: #374151;
}

.btn-secondary {
    background-color: white;
    color: #374151;
    border-color: #d1d5db;
}

.btn-secondary:hover {
    background-color: #f9fafb;
    border-color: #9ca3af;
}

/* Content sections */
.content {
    margin-bottom: 60px;
}

section {
    margin-bottom: 50px;
}

h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 20px;
    border-bottom: 2px solid #f3f4f6;
    padding-bottom: 10px;
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

p {
    font-size: 1rem;
    line-height: 1.7;
    color: #374151;
    margin-bottom: 16px;
}

/* Abstract */
.abstract p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #111827;
    text-align: justify;
}

/* Methodology */
.methodology-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.method-card {
    background-color: #f9fafb;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}

.method-card h3 {
    color: #111827;
    margin-bottom: 15px;
}

.method-card ul {
    list-style: none;
    padding: 0;
}

.method-card li {
    margin-bottom: 12px;
    padding-left: 15px;
    position: relative;
}

.method-card li:before {
    content: "•";
    color: #6b7280;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Results */
.finding {
    margin-bottom: 40px;
}

.finding h3 {
    color: #111827;
    margin-bottom: 15px;
}

.figure-container {
    margin: 25px 0;
    text-align: center;
}

.result-image {
    width: 100%;
    max-width: 700px;
    height: auto;
    margin: 0 auto 15px;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e7eb;
    display: block;
}

.figure-caption {
    font-size: 0.9rem;
    color: #6b7280;
    line-height: 1.5;
    font-style: italic;
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
    padding: 0 10px;
}

/* Implications */
.implications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.implication-card {
    background-color: #f9fafb;
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid #6b7280;
    border-right: 1px solid #e5e7eb;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
}

.implication-card h3 {
    color: #111827;
    margin-bottom: 12px;
}

.implication-card p {
    color: #374151;
    font-size: 0.95rem;
}

/* Conclusion */
.conclusion p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #111827;
    text-align: justify;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid #e1e5e9;
    color: #6b7280;
    font-size: 0.9rem;
}

.footer p {
    margin-bottom: 8px;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header {
        padding: 40px 0 30px;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    .method-grid,
    .implications-grid {
        grid-template-columns: 1fr;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
    
    section {
        margin-bottom: 35px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }
    
    .method-card,
    .implication-card {
        padding: 20px;
    }
    
    .result-image {
        margin: 0 auto 15px;
    }
    
    .figure-caption {
        font-size: 0.85rem;
        padding: 0 5px;
    }
}