@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

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

.fade-in {
    animation: fadeInUp 1s ease;
}

.slide-in {
    animation: slideIn 0.5s ease;
}

.pulse {
    animation: pulse 2s infinite;
}

/* 悬浮效果 */
.hover-float {
    transition: transform 0.3s ease;
}

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

/* 渐变背景动画 */
@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.gradient-bg {
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

/* 新增信息按钮样式 */
.info-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1.5rem;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.info-btn:hover {
    background-color: #45a049;
    transform: translateY(-2px);
}

/* 修改卡片悬停效果 */
.card {
    cursor: pointer;
}

/* 数据统计动画 */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 新增样式 */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    animation: countUp 1s ease forwards;
}

.stat-item i {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.section-title {
    text-align: center;
    margin: 3rem 0 2rem;
    color: #333;
    font-size: 2rem;
}

.device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.device-item {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.device-item:hover {
    transform: translateY(-5px);
}

.device-item i {
    font-size: 2.5rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.device-item ul {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.device-item li {
    margin: 0.5rem 0;
    color: #666;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.faq-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.faq-item h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #333;
    margin-bottom: 1rem;
}

/* 修改 footer 相关样式 */
.footer-content {
    display: block; /* 改为块级布局 */
    padding: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.footer-section h3 {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1rem;
    text-align: center;
}

/* 导航栏激活状态 */
.nav-links a.active {
    color: #007bff;
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #007bff;
    animation: fadeInUp 0.3s ease;
}