/* 滚动容器 */
        .scroll-container {
            position: relative;
            width: 100vw;
            height: 100vh;
            overflow-y: auto;
            scroll-behavior: smooth;
            scroll-snap-type: y mandatory;
        }
        
        /* 隐藏默认滚动条 */
        .scroll-container::-webkit-scrollbar {
            display: none;
        }
        
        /* 屏幕公共样式 */
        .screen {
            width: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
           
            text-align: center;
            scroll-snap-align: start;
            position: relative;
        }
        
        /* 前几屏 - 全屏高度 */
        .full-screen {
            height: 100vh;
        }
        
        /* 最后一屏 - 50vh高度 */
        .half-screen {
            height: 39.5vh;
            background-color: #1a1a1a;
            color: white;
            justify-content: flex-start;
         
        }
        
		
		
        /* 屏幕内容容器 */
        .screen-content {
            max-width: 1200px;
            width: 90%;
            margin: 0 auto;
        }
        
        /* 屏幕标题 */
        .screen-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, #3498db, #9b59b6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .half-screen .screen-title {
            background: linear-gradient(90deg, #f1c40f, #e74c3c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        /* 屏幕描述 */
        .screen-description {
            font-size: 1.4rem;
            line-height: 1.8;
            color: #5d6d7e;
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }
        
        .half-screen .screen-description {
            color: #ddd;
            font-size: 1.2rem;
        }
        
        /* 进度指示器 */
        .progress-indicator {
            position: fixed;
            right: 30px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 100;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }
        
        .indicator-item {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background-color: rgba(52, 152, 219, 0.2);
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .indicator-item.active {
            background-color: #3498db;
            transform: scale(1.3);
        }
        
        .indicator-item:not(.active):hover {
            background-color: rgba(52, 152, 219, 0.5);
        }
        
        .indicator-item.half-screen-indicator {
            background-color: rgba(241, 196, 15, 0.2);
        }
        
        .indicator-item.half-screen-indicator.active {
            background-color: #f1c40f;
        }
        
        .indicator-item.half-screen-indicator:not(.active):hover {
            background-color: rgba(241, 196, 15, 0.5);
        }
        
        .indicator-number {
            position: absolute;
            right: 25px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #3498db;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .indicator-item.active .indicator-number {
            opacity: 1;
        }
        
        .indicator-item.half-screen-indicator .indicator-number {
            color: #f1c40f;
        }
        
        /* 屏幕编号标签 */
        .screen-label {
            position: absolute;
            top: 20px;
            left: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            background-color: rgba(52, 152, 219, 0.1);
            color: #3498db;
        }
        
        .half-screen .screen-label {
            background-color: rgba(241, 196, 15, 0.2);
            color: #f1c40f;
        }
        
        /* 高度指示器 */
        .height-indicator {
            position: absolute;
            bottom: 20px;
            left: 20px;
            font-size: 0.85rem;
            color: #7f8c8d;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .height-icon {
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: rgba(52, 152, 219, 0.1);
            border-radius: 4px;
        }
        
        .half-screen .height-indicator {
            color: #ddd;
        }
        
        /* 导航按钮 */
        .nav-buttons {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            z-index: 100;
        }
        
        .nav-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: white;
            border: none;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #3498db;
            transition: all 0.3s;
        }
        
        .nav-btn:hover {
            background-color: #3498db;
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
        }
        
        .nav-btn:active {
            transform: translateY(0);
        }
        
        /* 提示信息 */
        .hint {
            position: fixed;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 10px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            z-index: 1000;
            display: none;
        }
        
        /* 最后一屏特殊样式 */
        .half-screen-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 100%;
            max-width: 900px;
            margin-top: 20px;
        }
        
        .half-screen-actions {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }
        
        .action-btn {
            padding: 12px 30px;
            border-radius: 30px;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .primary-btn {
            background-color: #f1c40f;
            color: #1a1a1a;
        }
        
        .primary-btn:hover {
            background-color: #f39c12;
            transform: translateY(-3px);
        }
        
        .secondary-btn {
            background-color: transparent;
            color: #f1c40f;
            border: 2px solid #f1c40f;
        }
        
        .secondary-btn:hover {
            background-color: rgba(241, 196, 15, 0.1);
        }
        
        /* 屏幕背景颜色 */
        .screen-1 { background-color: #ffffff; }
        .screen-2 { background-color: #f8f9fa; }
        .screen-3 { background-color: #e9ecef; }
        .screen-4 { background-color: #ffffff; }
        .screen-5 { background-color: #f8f9fa; }
        .screen-6 { background-color: #142B3D } /* 最后一屏特殊背景 */
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .screen-title {
                font-size: 2.5rem;
            }
            
            .screen-description {
                font-size: 1.1rem;
            }
            
            .progress-indicator {
                right: 15px;
            }
            
            .nav-buttons {
                bottom: 20px;
                right: 20px;
            }
            
            .nav-btn {
                width: 45px;
                height: 45px;
                font-size: 18px;
            }
            
            .half-screen-actions {
                flex-direction: column;
                gap: 15px;
                width: 100%;
                max-width: 300px;
            }
            
            .action-btn {
                width: 100%;
            }
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .animate {
            animation: fadeInUp 0.8s ease forwards;
        }
        
        .delay-1 { animation-delay: 0.2s; opacity: 0; }
        .delay-2 { animation-delay: 0.4s; opacity: 0; }
        .delay-3 { animation-delay: 0.6s; opacity: 0; }
        
        /* 滚动提示 */
        .scroll-hint {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            color: #7f8c8d;
            font-size: 0.9rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        
        .scroll-hint i {
            animation: bounce 2s infinite;
        }
        
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0);
            }
            40% {
                transform: translateY(-10px);
            }
            60% {
                transform: translateY(-5px);
            }
        }
        
        /* 屏幕之间的分隔线 */
        .screen-divider {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(52, 152, 219, 0.3), transparent);
        }
        
        .half-screen .screen-divider {
            display: none;
        }