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

:root {
    --primary-color: #0066cc;
    --secondary-color: #00aaff;
    --accent-color: #ff6600;
    --dark-color: #1a1a2e;
    --light-color: #f5f9ff;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.accent-gradient {
    background: linear-gradient(135deg, var(--accent-color), #ff9900);
}

.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

.feature-card:hover .feature-icon {
    transform: scale(1.2);
    color: var(--accent-color);
}

.hero-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

.scroll-indicator {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

.data-card {
    transition: all 0.3s ease;
    overflow: hidden;
}

.data-card:hover {
    transform: translateY(-5px);
}

.data-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.data-card:hover::before {
    animation: shine 1.5s;
}

@keyframes shine {
    0% {
        left: -100%;
        opacity: 0;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        left: 100%;
        opacity: 0;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-content {
        text-align: center;
    }
    
    .hero-image {
        margin-top: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.active {
    opacity: 1;
    transform: translateY(0);
}

/* 导航栏滚动效果 */
.navbar {
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* 3D 元素容器 */
#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}