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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-section {
    background: linear-gradient(135deg, #1e5a8e 0%, #0a8bc2 100%);
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 80% 30%, rgba(255,255,255,0.1) 0%, transparent 50%),
    radial-gradient(circle at 20% 70%, rgba(255,255,255,0.05) 0%, transparent 50%);
}

.hero-title {
    font-size: 72px;
    font-weight: 700;
    color: white;
    position: relative;
    z-index: 1;
}


.publications-section {
    padding: 40px 0 100px;
    background: white;
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.publication-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.card-image {
    height: 250px;
    background: linear-gradient(135deg, #1174b5 0%, #0a8bc2 100%);
    position: relative;
}

.card-content {
    padding: 24px;
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    color: #000;
    margin-bottom: 8px;
}

.card-category {
    display: inline-block;
    color: #1174b5;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
}

.card-description {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: #999;
}

.meta-year, .meta-size {
    display: flex;
    align-items: center;
    gap: 5px;
}

.download-btn {
    background: linear-gradient(135deg, #1498D5 0%, #0354A2 100%);
    color: white;
    border: none;
    padding: 10px 30px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 48px;
    }

    .publications-grid {
        grid-template-columns: 1fr;
    }

}