* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            overflow-x: hidden;
            background: #000;
            color: #fff;
        }

        .welcome-section {
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            width: 100vw;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: rgb(255, 255, 255);
            text-align: center;
            z-index: 1000;
            transition: opacity 0.5s ease;
        }

        .welcome-section.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .welcome-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background-color: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: -1;
        }

        .welcome-content {
            z-index: 1;
            width: auto;
            max-width: 90vw;
            margin: 0 auto;
            padding: 20px;
        }

        .welcome-title {
            font-size: 3rem;
            margin-bottom: 2rem;
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
        }

        .meet-button {
            padding: 1rem 2rem;
            font-size: 1.2rem;
            background-color: rgba(255, 255, 255, 0.1);
            border: 2px solid rgb(255, 255, 255);
            color: rgb(255, 255, 255);
            cursor: pointer;
            transition: all 0.3s ease;
            border-radius: 5px;
            position: relative;
            overflow: hidden;
        }

        .meet-button:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

        .glow-effect {
            position: absolute;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0) 70%);
            border-radius: 50%;
            pointer-events: none;
            transform: translate(-50%, -50%);
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 1;
        }

        .portfolio-container {
            width: 100%;
            max-width: 1920px;
            margin: 0 auto;
            height: 100vh;
            overflow-y: auto;
            overflow-x: hidden;
            position: relative;
        }

        .portfolio-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            padding: 20px;
            min-height: 100%;
        }

        .portfolio-item {
            width: 100%;
            max-width: 100%;
            position: relative;
        }

        .portfolio-item img,
        .portfolio-item video {
            width: 100%;
            height: auto;
            display: block;
            pointer-events: none;
            user-select: none;
            -webkit-user-drag: none;
        }
        
        /* 新增的备案信息样式 */
        .icp-footer {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(5px);
            -webkit-backdrop-filter: blur(5px);
            color: #fff;
            text-align: center;
            padding: 12px 0;
            font-size: 14px;
            z-index: 999;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            transition: transform 0.3s ease;
        }
        
        .icp-footer.hidden {
            transform: translateY(100%);
        }
        
        .icp-footer a {
            color: #4da6ff;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 4px;
        }
        
        .icp-footer a:hover {
            color: #80c1ff;
            background: rgba(255, 255, 255, 0.1);
        }
        
        .icp-footer a i {
            font-size: 16px;
        }
        
        .copyright {
            margin-top: 8px;
            font-size: 12px;
            opacity: 0.7;
        }
        
        .icp-toggle {
            position: fixed;
            right: 20px;
            bottom: 20px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 1000;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
        }
        
        .icp-toggle:hover {
            background: rgba(0, 0, 0, 0.9);
            transform: scale(1.1);
        }

        @media (min-width: 769px) {
            /* 删除 .welcome-content 的 width: 1920px; */
        }

        @media (max-width: 768px) {
            .portfolio-container {
                width: 100%;
                max-width: none;
                aspect-ratio: auto;
            }

            .welcome-title {
                font-size: 2rem;
            }

            .welcome-content {
                padding: 10px;
            }
            
            .icp-footer {
                font-size: 12px;
                padding: 10px 0;
            }
            
            .copyright {
                font-size: 10px;
            }
        }