/* 产品详情页样式 */
.app-intro {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.app-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.app-intro h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    font-weight: 700;
}

.app-intro p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.app-icon-wrapper {
    margin: 2rem auto;
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.app-icon-wrapper img {
    width: 150px;
    height: 150px;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    transition: transform 0.3s ease;
    display: block;
    margin: 0 auto;
}

.app-icon-wrapper img:hover {
    transform: scale(1.05);
}

/* 产品特性部分 */
.product-features {
    padding: 4rem 2rem;
    background-color: #fff;
}

.product-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #333;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

/* 下载按钮部分 */
.download {
    text-align: center;
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

.download-buttons .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 200px;
}

.download-buttons .btn-android {
    background: linear-gradient(135deg, #3ddc84 0%, #2ecc71 100%);
}

.download-buttons .btn-ios {
    background: linear-gradient(135deg, #007aff 0%, #0051d5 100%);
}

.download-buttons .btn-macos {
    background: linear-gradient(135deg, #007aff 0%, #0051d5 100%);
}

.download-buttons .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.download-icon {
    font-size: 1.5rem;
}

/* 产品描述部分 */
.product-description {
    padding: 4rem 2rem;
    background-color: #fff;
    max-width: 900px;
    margin: 0 auto;
}

.product-description h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #333;
    text-align: center;
}

.product-description p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* 返回首页链接 */
.back-home {
    text-align: center;
    padding: 2rem;
    background-color: #f8f9fa;
}

.back-home a {
    color: #667eea;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.back-home a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app-intro {
        padding: 3rem 1rem;
    }

    .app-intro h1 {
        font-size: 2rem;
    }

    .app-icon-wrapper img {
        width: 120px;
        height: 120px;
    }

    .product-features h2,
    .download h2 {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .download-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}