body { font-family: 'Inter', sans-serif; }
        h1, h2, h3, h4 { font-family: 'Playfair Display', serif; }
        
        /* 新增：主图自定义呼吸动画 */
        @keyframes breathe {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.04); }
        }
        .animate-breathe {
            animation: breathe 5s ease-in-out infinite;
        }