/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    background-image: url('https://images.unsplash.com/photo-1578301978693-85fa9c0320b9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    border-bottom: 2px solid #c41230;
    position: relative;
}

header::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 20px;
    background-image: url('https://images.unsplash.com/photo-1578301978693-85fa9c0320b9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    clip-path: polygon(0 0, 100% 0, 50% 100%);
}

h1 {
    font-size: 2.5rem;
    color: #c41230;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.prototype-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
}

.prototype-item {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
    border: 1px solid #e0e0e0;
    position: relative;
}

.prototype-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background-color: #c41230;
}

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

.prototype-item h2 {
    padding: 15px 20px;
    background-color: #f8f8f8;
    color: #333;
    font-size: 1.2rem;
    border-bottom: 1px solid #e0e0e0;
}

.frame-container {
    width: 100%;
    height: 600px;
    overflow: hidden;
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.prototype-item p {
    padding: 15px 20px;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e0e0e0;
    background-color: #f8f8f8;
}

@media (max-width: 768px) {
    .prototype-list {
        grid-template-columns: 1fr;
    }
    
    .frame-container {
        height: 500px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
}