/* Section 通用样式 */
   .auto-container {
     
            opacity: 0;
            transform: translateY(50px);
            transition: opacity 1s ease, transform 1s ease;
        }
     .auto-container.visible {
            opacity: 1;
            transform: translateY(0);
        }
          /* 自定义动画延迟 */
        .delay-1 { transition-delay: 0.2s; }
        .delay-2 { transition-delay: 0.4s; }
        .delay-3 { transition-delay: 0.6s; }