/* 基础样式 */
        body {
            margin: 0;
            padding: 0;
            font-family: "Microsoft YaHei", sans-serif;
            background-color: #f5f7fa;
            color: #333;
        }

        /* --- 新增：引言区域样式 --- */
        .intro-section {
            background-color: #ffffff;
            padding: 30px 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
            margin-bottom: 40px;
            border-left: 5px solid #4a90e2;
            /* 左侧蓝色装饰线 */
            color: #4a5568;
            line-height: 1.8;
            font-size: 16px;
        }

        .intro-section div {
            margin-bottom: 15px;
            text-indent: 2em;
            /* 首行缩进两字符 */
        }

        .intro-section div:last-child {
            margin-bottom: 0;
        }

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

        .yzm-content {
            width: 100% !important;
        }

        .yzm-box-left {
            width: 100% !important;
        }

        /* 标题样式 - 使用 div 满足要求 */
        .main-title {
            text-align: center;
            font-size: 32px;
            font-weight: bold;
            margin: 40px 0;
            color: #2c3e50;
        }

        .section-title {
            font-size: 24px;
            font-weight: bold;
            margin: 30px 0 15px 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #e2e8f0;
            color: #34495e;
        }

        /* 网格布局 */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 25px;
            margin-bottom: 50px;
        }

        /* 卡片样式 */
        .photo-card {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            cursor: pointer;
        }

        .photo-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        }

        .image-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
        }

        .photo-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        /* 信息区域 */
        .info-container {
            padding: 15px;
            text-align: center;
        }

        .photo-title {
            font-size: 16px;
            font-weight: bold;
            color: #2d3748;
            margin-bottom: 8px;
        }

        .photo-author {
            font-size: 14px;
            color: #718096;
        }

        /* 灯箱 (Lightbox) 样式 */
        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            z-index: 1000;
            align-items: center;
            justify-content: center;
            flex-direction: column;
        }

        .lightbox.active {
            display: flex;
        }

        .lightbox-content {
            position: relative;
            max-width: 90%;
            max-height: 80%;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .lightbox img {
            max-width: 100%;
            max-height: 80vh;
            object-fit: contain;
            border-radius: 4px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
        }

        .lightbox-info {
            margin-top: 15px;
            color: white;
            text-align: center;
            font-size: 18px;
        }

        .lightbox-title {
            margin-bottom: 5px;
            font-weight: bold;
        }

        .lightbox-author {
            color: #cbd5e0;
            font-size: 16px;
        }

        /* 控制按钮 */
        .nav-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            font-size: 24px;
            cursor: pointer;
            transition: background 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .nav-btn:hover {
            background: rgba(255, 255, 255, 0.5);
        }

        .prev-btn {
            left: 5%;
        }

        .next-btn {
            right: 5%;
        }

        .close-btn {
            position: absolute;
            top: 20px;
            right: 30px;
            color: white;
            font-size: 40px;
            cursor: pointer;
            z-index: 1001;
            transition: color 0.3s;
        }

        .close-btn:hover {
            color: #e53e3e;
        }