/* 关于页面特色区块样式 */
.about-features-section {
    position: relative;
    padding: 50px 0;
    background-image: url('../images/about-features.webp');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-features-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

/* 主标题样式 */
.about-features-header {
    margin-bottom: 60px;
}

.about-features-title {
    font-size: 36px;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
    line-height: 1.3;
}

/* 统计数据容器 */
.about-features-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

/* 单个统计项 */
.about-features-stat-item {
    flex: 1;
    min-width: 200px;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.about-features-stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* 统计数字 */
.about-stat-number {
    font-size: 48px !important;
    font-weight: 800 !important;
    color: #ffffff !important;
    margin-bottom: 10px !important;
    line-height: 1 !important;
    opacity: 0 !important;
    transform: translateY(20px) !important;
    transition: all 0.3s ease !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* 计数动画关键帧 */
@keyframes countUp {
    0% {
        opacity: 0 !important;
        transform: translateY(20px) !important;
    }
    50% {
        opacity: 1 !important;
        transform: translateY(0) !important;
    }
    100% {
        opacity: 1 !important;
        transform: translateY(0) !important;
    }
}

/* 数字计数动画触发类 */
.about-stat-number.animate {
    opacity: 1 !important;
    transform: translateY(0) !important;
    animation: countUp 2s ease-out forwards !important;
}

/* 为每个统计项添加不同的延迟 */
.about-features-stat-item:nth-child(1) .about-stat-number.animate {
    animation-delay: 0.2s !important;
}

.about-features-stat-item:nth-child(2) .about-stat-number.animate {
    animation-delay: 0.4s !important;
}

.about-features-stat-item:nth-child(3) .about-stat-number.animate {
    animation-delay: 0.6s !important;
}

.about-features-stat-item:nth-child(4) .about-stat-number.animate {
    animation-delay: 0.8s !important;
}

/* 统计标签 */
.about-stat-label {
    font-size: 16px;
    color: #ffffff;
    opacity: 0.9;
    line-height: 1.4;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

/* 平板设备适配 */
@media (max-width: 768px) {
    .about-features-section {
        padding: 60px 0;
        background-attachment: scroll;
    }
    
    .about-features-title {
        font-size: 28px;
    }
    
    .about-features-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-features-stat-item {
        min-width: auto;
        width: 100%;
        padding: 25px 15px;
    }
    
    .about-stat-number {
        font-size: 36px;
    }
    
    .about-stat-label {
        font-size: 14px;
    }
}

/* 手机设备适配 */
@media (max-width: 480px) {
    .about-features-section {
        padding: 40px 0;
    }
    
    .about-features-container {
        padding: 0 15px;
    }
    
    .about-features-header {
        margin-bottom: 40px;
    }
    
    .about-features-title {
        font-size: 24px;
    }
    
    .about-features-stat-item {
        padding: 20px 15px;
    }
    
    .about-stat-number {
        font-size: 32px;
    }
    
    .about-stat-label {
        font-size: 13px;
    }
}