@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: #f8fafc;
}

.bg-gradient-blue {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.4);
}

.btn-primary {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #0d645d 0%, #0f9488 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(20, 184, 166, 0.4);
}

.fixed-bottom-menu {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

/* 响应式调整 */
@media (max-width: 640px) {
    .module-title {
        font-size: 1.25rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn {
    animation: fadeIn 0.8s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }