/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto Mono', monospace;
    background: linear-gradient(to bottom, #000033, #330066, #000000);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Eurostile', sans-serif;
    color: #00FF99;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    font-size: 16px;
    margin-bottom: 15px;
}

a {
    color: #FF69B4;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #FF1493;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.header {
    position: relative;
    height: 100vh;
    background: url("https://images.gptkong.com/demo/sample1.png") no-repeat center center/cover, 
                linear-gradient(to right, #000033, #330066, #000000);
    color: #FFFFFF;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header h1 {
    font-size: 48px;
    letter-spacing: 4px;
    text-shadow: 0 0 10px #00FF99;
}

.grid-item {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 20px;
    transition: transform 0.3s ease;
}

.grid-item:hover {
    transform: scale(1.05);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 5px;
    object-fit: cover;
}

.code-block {
    background: #1E1E1E;
    color: #00FF99;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 36px;
    }

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

/* 提示信息 */
.notice {
    text-align: center;
    font-size: 14px;
    color: #FFD700;
    margin: 20px 0;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 1.5s ease-in-out;
}