@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700&display=swap');

        .case-showcase {
            max-width: 1400px;
            margin: 0 auto;
            padding: 5rem 2rem;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-header .subtitle {
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: #1f6e8c;
            background: #d9eef5;
            display: inline-block;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            margin-bottom: 1rem;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: #333;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }

        .section-header .desc {
            font-size: 14px;
            color: #333;
            /*max-width: 680px;*/
            margin: 0 auto;
        }

        /* 案例网格 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 1rem;
        }

        /* 卡片样式 */
        .case-card {
            background: #ffffff;
            border-radius: 1.5rem;
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: 0 12px 24px -12px rgba(0, 32, 48, 0.08);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid rgba(31, 110, 140, 0.12);
        }

        .case-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 24px 36px -14px rgba(18, 70, 92, 0.2);
            border-color: rgba(31, 110, 140, 0.28);
             bordr:2px solid #03A9F4
        }

        /* 图片区域 — 自定义 svg 图片展示 (模拟实验实拍/科研示意图) */
        .card-image {
            position: relative;
            height: 210px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eef5f9 0%, #e0edf3 100%);
            transition: all 0.3s;
            overflow: hidden;
        }

        /* 给每个卡片图片区不同的微渐变底色，更有层次 */
        .case-card:nth-child(1) .card-image { background: linear-gradient(125deg, #e9f0f5, #d8e5ed); }
        .case-card:nth-child(2) .card-image { background: linear-gradient(125deg, #ffeaeef0, #fee2e8); }
        .case-card:nth-child(3) .card-image { background: linear-gradient(125deg, #e0f2ee, #d0e8e3); }
        .case-card:nth-child(4) .card-image { background: linear-gradient(125deg, #ede7f6, #e2d9f0); }
        .case-card:nth-child(5) .card-image { background: linear-gradient(125deg, #e2f0e8, #d3e6db); }
        .case-card:nth-child(6) .card-image { background: linear-gradient(125deg, #ffede3, #fae1d4); }

        /* svg 图片样式 (视觉上就像科学插图) */
        .card-image svg {
            width: 130px;
            height: 130px;
            filter: drop-shadow(0 6px 12px rgba(0,0,0,0.08));
            transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
        }

        .case-card:hover .card-image svg {
            transform: scale(1.02);
        }

        /* 装饰小颗粒 (增加微观实验感) */
        .card-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 40%, rgba(80,140,160,0.08) 1.5px, transparent 1.5px);
            background-size: 22px 22px;
            pointer-events: none;
        }

        /* 卡片内容区 */
        .card-content {
            padding: 1.5rem 1.5rem 1.8rem;
            flex: 1;
            display: flex;
            flex-direction: column;
                /*background-color: #ebf9ff;*/
        }

        .card-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: #153e4f;
            margin-bottom: 0.6rem;
            line-height: 1.3;
        }

        .card-description {
            font-size: 0.9rem;
            color: #466472;
            margin-bottom: 1.2rem;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1.4rem;
        }

        .tag {
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.25rem 0.9rem;
            background-color: #eef3f7;
            color: #1b6d8a;
            border-radius: 40px;
            letter-spacing: 0.2px;
        }

        .card-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
          
            font-size: 12px;
            color: #73c3e7;
            text-decoration: none;
            border-bottom: 1.5px solid transparent;
            transition: all 0.2s;
            width: fit-content;
            padding: 10px;
    border-radius: 20px;
    border: #73c3e7 1px solid;
    letter-spacing: 0.5px;
        }

        .card-link i {
            font-size: 0.75rem;
            transition: transform 0.2s;
        }

        .card-link:hover {
            color: #0e4d66;
            border-bottom-color: #1f6e8c;
            gap: 0.7rem;
              background: #2196f3;
            color: white;
            
        }

        .card-link:hover i {
            transform: translateX(4px);
             
        }

        .more-wrapper {
            text-align: center;
            margin-top: 3.8rem;
        }

        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            background: transparent;
            border: 1.5px solid #2196F3;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #03A9F4;
            text-decoration: none;
            transition: all 0.25s;
        }

        .btn-more i {
            font-size: 0.85rem;
        }

        .btn-more:hover {
            background: #2196f3;
            color: white;
            box-shadow: 0 8px 20px -8px rgba(31,110,140,0.4);
            border-color: #1f6e8c;
            
        }

        .btn-more:hover i {
            transform: translateX(4px);
        }

        @media (max-width: 768px) {
            .case-showcase {
                padding: 3rem 1.2rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .cases-grid {
                gap: 1.4rem;
                grid-template-columns: 1fr;
            }
            .card-image {
                height: 180px;
            }
            .card-image svg {
                width: 100px;
                height: 100px;
            }
        }

        @media (max-width: 480px) {
            .card-content {
                padding: 1.2rem;
            }
        }

        /* 入场动效 */
        .case-card {
            animation: fadeSlideUp 0.5s ease backwards;
        }
        .case-card:nth-child(1) { animation-delay: 0.03s; }
        .case-card:nth-child(2) { animation-delay: 0.08s; }
        .case-card:nth-child(3) { animation-delay: 0.12s; }
        .case-card:nth-child(4) { animation-delay: 0.16s; }
        .case-card:nth-child(5) { animation-delay: 0.2s; }
        .case-card:nth-child(6) { animation-delay: 0.24s; }

        @keyframes fadeSlideUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }





















  /* 导入优雅字体 */
        @import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700&display=swap');

        /* 板块整体容器（与之前案例展示风格保持一致的柔和感） */
        .contact-section {
            max-width: 1400px;
            margin: 2rem auto;
            background: transparent;
        }

        /* 左右网格布局 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: stretch;
        }

        /* 公用卡片样式 — 轻盈玻璃态 */
        .card-panel {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(2px);
            border-radius: 2rem;
            box-shadow: 0 20px 35px -12px rgba(0, 32, 48, 0.1), 0 0 0 1px rgba(80, 160, 170, 0.2);
            transition: transform 0.25s ease, box-shadow 0.3s;
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card-panel:hover {
            transform: translateY(-4px);
            box-shadow: 0 28px 40px -16px rgba(30, 100, 110, 0.2), 0 0 0 1px rgba(72, 187, 194, 0.4);
            background: rgba(255, 255, 255, 0.96);
        }

        /* 内边距 */
        .card-inner {
            padding: 2rem 2rem 2.2rem;
            flex: 1;
        }

        /* 板块标题装饰 */
        .section-title {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1.8rem;
            font-weight: 700;
            font-size: 1.6rem;
           /* color: #1a5f6e;
            border-left: 5px solid #3bafb9;
            padding-left: 1rem;*/
        }

        .section-title i {
            font-size: 1.6rem;
            color: #2196F3;
        }

        /* 表单样式 */
        .form-group {
            margin-bottom: 1.4rem;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #333;
            letter-spacing: 0.3px;
        }

        .form-group label i {
            margin-right: 0.4rem;
            font-size: 0.8rem;
            color: #2196F3;
        }

        .form-control {
            width: 100%;
            padding: 0.9rem 1rem;
            font-size: 0.9rem;
            background: #fefefe;
            border: 1px solid #d4e2e8;
            border-radius: 1.2rem;
            transition: all 0.2s;
            outline: none;
            color: #1b3b45;
        }

        .form-control:focus {
            border-color: #3bafb9;
            box-shadow: 0 0 0 3px rgba(59, 175, 185, 0.2);
            background: #ffffff;
        }

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        /* 提交按钮 */
        .btn-submit {
            background: linear-gradient(105deg, #2196F3, #3bafb9);
            border: none;
            padding: 0.9rem 1.5rem;
            width: 100%;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.9rem;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            cursor: pointer;
            transition: all 0.25s;
            box-shadow: 0 6px 12px -6px rgba(0, 0, 0, 0.1);
            margin-top: 0.8rem;
        }

        .btn-submit:hover {
            background: linear-gradient(105deg, #22717c, #2f9ca7);
            transform: scale(1.01);
            gap: 0.9rem;
            box-shadow: 0 12px 18px -8px rgba(59, 175, 185, 0.4);
        }

        /* 右侧联系信息项 */
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .contact-icon {
            width: 44px;
            height: 44px;
            background: #e5f3f5;
            border-radius: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #2196f3;
            transition: 0.2s;
        }

        .contact-detail h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 0.2rem;
        }

        .contact-detail p, .contact-detail a {
            font-size: 0.85rem;
            color: #6b6868;
            text-decoration: none;
            transition: color 0.2s;
        }

        .contact-detail a:hover {
            color: #3bafb9;
            text-decoration: underline;
        }

        /* 工作时间特殊样式 */
        .office-hours {
            background: #f2fafc;
            border-radius: 1.5rem;
            padding: 1rem 1.2rem;
            margin: 1.5rem 0;
            border: 1px solid #cde7ec;
        }

        .hours-row {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            margin-bottom: 0.5rem;
        }

        .hours-row span:first-child {
            font-weight: 600;
            color: #1b6b7a;
        }

        /* 社交图标组 */
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.2rem;
        }

        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: #eef5f7;
            border-radius: 50%;
            color: #2c8996;
            font-size: 1.1rem;
            transition: all 0.2s;
            text-decoration: none;
        }

        .social-links a:hover {
            background: #3bafb9;
            color: white;
            transform: translateY(-3px);
        }

        .map-placeholder {
            margin-top: 1.6rem;
            background:#2196F3;
            border-radius: 1.2rem;
            height: 110px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 500;
            border: 1px solid #bfdfe6;
            transition: 0.2s;
                background: linear-gradient(105deg, #2196F3, #3bafb9);
        }

        .map-placeholder i {
            font-size: 1.2rem;
        }

        /* 响应式 */
        @media (max-width: 850px) {
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
    
            .card-inner {
                padding: 1.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

        /* 成功/错误提示个性小弹窗 */
        .toast-msg {
            position: fixed;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%) translateY(20px);
            background: #1e2f3a;
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            backdrop-filter: blur(8px);
            background: rgba(30, 47, 58, 0.9);
            border-left: 3px solid #3bafb9;
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
        }
        .toast-msg.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }