/* 基础变量定义 */
    :root {
        --primary: #ef782b;
        --primary-light: #f1ab7c;
        --primary-dark: #ef782b;
        --neutral-50: #fafafa;
        --neutral-100: #f5f5f5;
        --neutral-200: #e5e5e5;
        --neutral-300: #d4d4d4;
        --neutral-500: #71717a;
        --neutral-600: #52525b;
        --neutral-800: #262626;
        --neutral-900: #171717;
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
        --radius: 0.75rem;
        --primary-color: #ef782b;
        --secondary-color: #ef782b;
        --dark-color: #1D2129;
        --light-color: #F2F3F5;
        --gray-color: #86909C;
        --white-color: #FFFFFF;
        --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        --transition: all 0.3s ease;
    }

    a {
        text-decoration: none;
        color: inherit;
    }

    ul {
        list-style: none;
    }

    header {
        position: sticky;
    }

    header i {
        color: #333333 !important;
    }

    /* 二级栏目导航 */
    .container-nav {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 1rem;
    }

    .secondary-nav {
        width: 100%;
        background-color: white;
        border-bottom: 1px solid var(--neutral-100);
    }

    .secondary-nav-container {
        display: flex;
        overflow-x: auto;
        padding: 0.75rem 1rem;
        scrollbar-width: none;
    }

    .secondary-nav-container::-webkit-scrollbar {
        display: none;
    }

    .category-btn {
        white-space: nowrap;
        padding: 0.5rem 1rem;
        margin-right: 0.25rem;
        font-size: 0.875rem;
        font-weight: 500;
        color: var(--neutral-600);
        transition: color 0.3s ease;
        position: relative;
    }

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

    .category-btn.active {
        color: var(--primary);
    }

    .category-btn.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: var(--primary);
    }

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

    .main-categories {
        display: flex;
        list-style: none;
        overflow-x: auto;
        padding: 10px 0;
        scrollbar-width: none;
    }

    .main-categories::-webkit-scrollbar {
        display: none;
    }

    .main-categories li {
        margin-right: 30px;
        white-space: nowrap;
        position: relative;
    }

    .main-categories a {
        text-decoration: none;
        color: var(--dark-color);
        font-weight: 500;
        padding: 8px 0;
        display: inline-block;
        transition: var(--transition);
    }

    .main-categories a:hover,
    .main-categories a.active {
        color: var(--primary-color);
    }

    .main-categories a.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background-color: var(--primary-color);
        border-radius: 3px;
    }

    .subcategory-list {
        display: flex;
        flex-wrap: wrap;
        gap: 15px;
        list-style: none;
    }

    .subcategory-list li a {
        text-decoration: none;
        color: var(--gray-color);
        font-size: 0.9rem;
        padding: 5px 12px;
        border-radius: 20px;
        transition: var(--transition);
    }

    .subcategory-list li a:hover,
    .subcategory-list li a.active {
        color: var(--primary-color);
        background-color: rgba(22, 93, 255, 0.1);
    }

    /* 主标题区域 */
    .hero {
        padding: 40px 0;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
        margin-bottom: 15px;
        font-weight: 700;
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }

    .hero p {
        color: var(--gray-color);
        max-width: 600px;
        margin: 0 auto;
        font-size: 1.1rem;
    }

    /* 图片列表样式 */
    .image-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 30px;
        margin: 40px 0;
    }

    .image-card {
        background-color: var(--white-color);
        border-radius: 12px;
        overflow: hidden;
        box-shadow: var(--shadow);
        transition: var(--transition);
        position: relative;
        height: 100%;
        display: flex;
        flex-direction: column;
    }

    .image-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
    }

    .image-container {
        position: relative;
        overflow: hidden;
        aspect-ratio: 4/3;
    }

    .image-container img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }

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

    .image-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 50%);
        opacity: 0;
        transition: var(--transition);
        display: flex;
        align-items: flex-end;
        padding: 20px;
    }

    .image-card:hover .image-overlay {
        opacity: 1;
    }

    .overlay-actions {
        display: flex;
        gap: 10px;
        width: 100%;
        justify-content: flex-end;
    }

    .action-btn {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background-color: var(--white-color);
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: var(--transition);
        color: var(--dark-color);
    }

    .action-btn:hover {
        background-color: var(--primary-color);
        color: var(--white-color);
    }

    .image-info {
        padding: 20px;
        flex-grow: 1;
        display: flex;
        flex-direction: column;
    }

    .image-category {
        font-size: 0.8rem;
        color: var(--primary-color);
        margin-bottom: 5px;
        text-transform: uppercase;
        letter-spacing: 1px;
        font-weight: 500;
    }

    .image-title {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 10px;
        color: var(--dark-color);
        transition: var(--transition);
    }

    .image-card:hover .image-title {
        color: var(--primary-color);
    }

    .image-description {
        font-size: 0.9rem;
        color: var(--gray-color);
        margin-bottom: 15px;
        flex-grow: 1;
    }

    .image-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.8rem;
        color: var(--gray-color);
    }

    /* 分页样式 */
    .pagination {
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 50px 0 80px;
        gap: 10px;
    }

    .page-btn {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        border: 1px solid var(--light-color);
        background-color: var(--white-color);
        color: var(--dark-color);
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition);
        display: flex;
        align-items: center;
        justify-content: center;
    }

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

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

    .page-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
        border-color: var(--light-color);
        color: var(--gray-color);
        background-color: var(--light-color);
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        .hero h1 {
            font-size: 2rem;
        }

        .image-grid {
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }

        .main-categories li {
            margin-right: 20px;
        }
    }

    @media (max-width: 480px) {

        .hero {
            padding: 30px 0;
        }

        .hero h1 {
            font-size: 1.6rem;
        }

        .hero p {
            font-size: 1rem;
        }

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

        .pagination {
            gap: 5px;
        }

        .page-btn {
            width: 34px;
            height: 34px;
            font-size: 0.9rem;
        }
    }