a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    padding-top: 100px;
}


/* =========================================
           3. Page Header & Filters (头部与筛选)
           ========================================= */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    flex-wrap: wrap;
    gap: 20px;
}

h1 {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-main);
}

.search-box {
    position: relative;
    width: 300px;
    max-width: 100%;
}

.search-input {
    width: 100%;
    padding: 10px 15px;
    padding-right: 40px;
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    outline: none;
    transition: border-color 0.3s;
    font-size: 14px;
}

.search-input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.1);
    }

.search-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.category-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.tab-btn {
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

    .tab-btn:hover {
        color: var(--primary-color);
        border-color: var(--primary-color);
    }

    .tab-btn.active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
        font-weight: bold;
        box-shadow: var(--shadow-sm);
    }

/* =========================================
           4. News Grid (新闻列表)
           ========================================= */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.news-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

    .news-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
    }

.card-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background-color: var(--bg-body);
}

.card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.news-card:hover .card-image {
    transform: scale(1.05);
}

.card-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    color: white;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: bold;
}

.card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    line-height: 1.4;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.meta-views {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.2s;
}

    .page-btn:hover:not(:disabled) {
        background-color: var(--border-color);
        color: var(--text-main);
    }

    .page-btn.active {
        background-color: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
        font-weight: bold;
    }

    .page-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

/* States */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 0;
    color: var(--text-secondary);
    font-size: 16px;
}

/* Loading */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.7);
    z-index: 2000;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(2px);
}

body.dark .loading-overlay {
    background: rgba(0,0,0,0.7);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .search-box {
        width: 100%;
    }

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