:root {
            --theme-color: #00BEBD; 
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-color: #f3f4f6;
            --border-color: #e5e7eb;
            --container-width: 1184px; 
            --secondary-color: #dc2626; /* 红色用于强调警示与效率 */
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            color: var(--text-dark);
            line-height: 1.6;
            background-color: var(--bg-color);
            overflow-x: hidden; 
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 15px;
        }

             /* 顶部导航 Header */
        .header {
            background-color: #ffffff;
            border-bottom: 1px solid #e5e7eb;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            padding: 10px 20px;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }

        .logo span {
            color: var(--secondary-color);
            margin-left: 5px;
        }

.nav-wrapper { display: flex; justify-content: space-between; align-items: center; padding: 10px 20px; }
#nav-menu ul { display: flex; list-style: none; }
#nav-menu ul li a { padding: 0 15px; text-decoration: none; color: #333; }
.menu-toggle { display: none; font-size: 24px; cursor: pointer; }

        .contact-btn {
            background-color: var(--secondary-color);
            color: white;
            padding: 10px 24px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 18px;
        }

        /* 内页 Banner */
        .inner-banner {
            background: linear-gradient(rgba(31, 41, 55, 0.8), rgba(31, 41, 55, 0.8)), url('https://dummyimage.com/1920x300/1f2937/fff&text=Successful+Cases') center/cover;
            color: white;
            padding: 60px 0;
            text-align: center;
        }
        .inner-banner h1 { font-size: 36px; margin-bottom: 10px; }
        .inner-banner p { font-size: 16px; color: #d1d5db; }

        /* 面包屑导航 */
        .breadcrumb {
            padding: 20px 0;
            font-size: 14px;
            color: var(--text-light);
        }
        .breadcrumb a { transition: color 0.2s; }
        .breadcrumb a:hover { color: var(--theme-color); }
        .breadcrumb span { margin: 0 8px; color: #9ca3af; }

        /* 案例网格布局 */
        .case-page-wrapper {
            padding-bottom: 60px;
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.1);
            transform: translateY(-5px);
            border-color: var(--theme-color);
        }

        .case-thumb {
            width: 100%;
            height: 220px;
            background-color: var(--bg-color);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #9ca3af;
            overflow: hidden;
            position: relative;
        }

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

        .case-card:hover .case-thumb img {
            transform: scale(1.08);
        }
        
        /* 图片上的状态角标 */
        .status-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background-color: var(--theme-color);
            color: #fff;
            padding: 4px 10px;
            font-size: 12px;
            border-radius: 4px;
            font-weight: bold;
            z-index: 2;
        }

        .case-info {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
            min-width: 0;
        }

        .case-title {
            font-size: 18px;
            font-weight: bold;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }

        .case-card:hover .case-title {
            color: var(--theme-color);
        }
        
.side-float-nav { position: fixed; right: 10px; bottom: 20%; z-index: 999; }
.float-item { display: block; width: 50px; height: 50px; background: #00BEBD; color: #fff; text-align: center; line-height: 50px; margin-bottom: 10px; border-radius: 50%; text-decoration: none; font-size: 12px; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }

        .case-desc {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1; /* 撑开中间区域，让底部 meta 对齐 */
        }

        /* 统一使用发布时间与浏览量 */
        .case-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 15px;
            border-top: 1px dashed var(--border-color);
            font-size: 13px;
            color: #9ca3af;
        }

        /* 分页器 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 50px;
        }
        .pagination a, .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--text-dark);
            border-radius: 4px;
            font-size: 15px;
            transition: all 0.2s;
        }
        .pagination a:hover { border-color: var(--theme-color); color: var(--theme-color); }
        .pagination .current { background-color: var(--theme-color); color: #fff; border-color: var(--theme-color); }

        /* 页脚 Footer */
        .footer {
            background-color: #1f2937;
            color: #9ca3af;
            padding: 60px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-title { color: white; font-size: 18px; margin-bottom: 20px; }
        .footer-info p { margin-bottom: 10px; }
        .copyright {
            text-align: center;
            border-top: 1px solid #374151;
            padding-top: 20px;
            font-size: 14px;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .case-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .inner-banner { padding: 40px 0; }
            .inner-banner h1 { font-size: 28px; }
            .case-grid { grid-template-columns: 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            
        .contact-btn {display:none;}

    .menu-toggle { display: block; }
    #nav-menu { display: none; position: absolute; top: 60px; left: 0; width: 100%; background: #fff; border-bottom: 2px solid #00BEBD; }
    #nav-menu.active { display: block; }
    #nav-menu ul { flex-direction: column; padding: 0; }
    #nav-menu ul li { border-bottom: 1px solid #eee; padding: 15px; text-align: center; }
      
            
        }