@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;
}

.gradient-bg {
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
}

.card-shadow {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn-primary {
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #ff6600 0%, #ff9900 100%);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(255, 102, 0, 0.3);
}

.module-title {
    position: relative;
    padding-left: 1rem;
}

.module-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    border-radius: 2px;
}

.feature-icon {
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    color: #0066cc;
}

.bottom-nav {
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.nav-item {
    transition: all 0.3s ease;
}

.nav-item:hover {
    color: #0066cc;
}

.nav-item.active {
    color: #0066cc;
}

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

.animate-fadeInUp {
    animation: fadeInUp 0.5s 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;
}

/* 响应式调整 */
@media (max-width: 640px) {
    .module-title {
        font-size: 1.25rem;
    }
    
    .module-title::before {
        height: 20px;
    }
}