@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');
        @import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: 'Noto Sans SC', sans-serif;
            overflow-x: hidden;
        }
        
        .gradient-text {
            background: linear-gradient(90deg, #8B5CF6, #3B82F6);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .hero-bg {
            background: linear-gradient(135deg, #F5F3FF 0%, #E0E7FF 50%, #DDD6FE 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-bg::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }
        
        .nav-link {
            position: relative;
            transition: all 0.3s ease;
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #8B5CF6;
            transition: width 0.3s ease;
        }
        
        .nav-link:hover::after {
            width: 100%;
        }
        
        .card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(139, 92, 246, 0.1);
        }
        
        .animate-float {
            animation: float 6s ease-in-out infinite;
        }
        
        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
            100% {
                transform: translateY(0px);
            }
        }
        
        .animate-pulse-slow {
            animation: pulse 4s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }
        
        @keyframes pulse {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }
        
        .timeline-item {
            position: relative;
            padding-left: 30px;
        }
        
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 2px;
            background-color: #8B5CF6;
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            left: -4px;
            top: 0;
            height: 10px;
            width: 10px;
            border-radius: 50%;
            background-color: #8B5CF6;
        }
        
        /* 深色模式 */
        .dark {
            color-scheme: dark;
        }
        
        .dark .bg-white {
            background-color: #1F2937;
        }
        
        .dark .text-gray-800 {
            color: #F9FAFB;
        }
        
        .dark .border-gray-200 {
            border-color: #374151;
        }
        
        .dark .shadow-lg {
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
        }