/* 全局样式 */
:root {
    --tech-green: #13BA46;
    --tech-blue: #1E90FF;
    --tech-orange: #FF6B35;
    --text-primary: #333333;
    --text-secondary: #666666;
}

body {
    font-family: 'Roboto', 'Source Han Sans CN', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Source Han Sans CN', sans-serif;
    font-weight: 700;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { transform: translateY(50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* 粒子背景 */
.particle-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

/* 卡片悬浮效果 */
.hover-card {
    transition: all 0.3s ease;
}

.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--tech-green);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0fa03d;
    transform: translateY(-2px);
}

/* 时间轴样式 */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--tech-green);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: var(--tech-green);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .timeline::before {
        left: 0;
    }
    
    .timeline-dot {
        left: 0;
    }
    
    .timeline-content {
        margin-left: 2rem;
    }
}

/* 3D效果 */
.card-3d {
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.card-3d:hover {
    transform: rotateY(10deg) rotateX(5deg);
}

/* 数据可视化容器 */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* 页脚样式 */
.footer {
    background-color: #f8f9fa;
    padding: 3rem 0;
    margin-top: 4rem;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* 滚动触发动画 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.scroll-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}