/* 额外的样式增强 */

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 为手机模型添加浮动动画 */
.phone-container {
    animation: float 3s ease-in-out infinite;
}

/* 功能卡片悬停效果 */
.feature-item {
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

/* 渐变背景动画 */
.hero {
    background: linear-gradient(-45deg, #ff4757, #ff3742, #ff6b7a, #ff4757);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 按钮点击效果 */
.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

/* 导航栏滚动效果 */
.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 响应式优化 */
@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-text p {
        font-size: 16px;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 200px;
        text-align: center;
    }
    
    .phone-screen {
        width: 200px;
        height: 350px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #ff4757;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #ff3742;
}

/* 选中文本样式 */
::selection {
    background: #ff4757;
    color: white;
}

/* 焦点样式 */
.btn:focus,
a:focus {
    outline: 2px solid #ff4757;
    outline-offset: 2px;
}

/* 图片懒加载效果 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy-load.loaded {
    opacity: 1;
}

/* ICP备案号样式 */
.copyright p {
    margin-bottom: 5px;
}

.copyright a:hover {
    color: #ff4757 !important;
    transition: color 0.3s ease;
}