.page-header {
    background: var(--primary);
    padding: 132px 0 40px;
    margin-top: -72px;
    text-align: center;
}

.page-title {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.page-subtitle {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
}
.filter-section {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
}
.articles-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}
.filter-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.filter-tag {
    padding: 8px 16px;
    background: var(--gray-100);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}
.filter-tag:hover { background: var(--gray-200); }
.filter-tag.active { background: var(--primary-light); color: var(--primary); }
.articles-search {
    display: flex;
    align-items: center;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}
.articles-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
.articles-search-input {
    border: none;
    outline: none;
    padding: 9px 16px;
    font-size: 14px;
    color: var(--gray-800);
    background: transparent;
    width: 200px;
}
.articles-search-input::placeholder { color: var(--gray-400); }
.articles-search-btn {
    padding: 9px 16px;
    background: var(--primary);
    border: none;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
}
.articles-search-btn:hover { background: var(--primary-hover); }
.loading-placeholder {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-500);
}
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@media (max-width: 768px) {
    .articles-toolbar { flex-direction: column; align-items: flex-start; }
    .articles-search-input { width: 140px; }
    .article-grid {
        grid-template-columns: 1fr !important;
    }
    .article-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .article-title,
    .article-excerpt {
        word-break: break-word;
        overflow-wrap: break-word;
    }
}