/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0A1A2F, #1E2D3D);
    color: #FFFFFF;
    line-height: 1.6;
}
h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: bold;
    margin: 1rem 0;
}
p, li {
    font-size: 1rem;
    margin: 0.8rem 0;
}
button {
    background-color: #00FFA3;
    color: #0A1A2F;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 5px;
}
button:hover {
    transform: scale(1.1);
    background-color: #1E2D3D;
}
code {
    background-color: #1E2D3D;
    color: #00FFA3;
    padding: 5px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}
pre {
    background-color: #1E2D3D;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}
th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid #00FFA3;
}
th {
    background-color: #00FFA3;
    color: #0A1A2F;
}
.banner {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.gptkong.com/demo/sample1.png');
    background-size: cover;
    background-position: center;
}
.buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 50vh;
}
.parallax-1 { background-image: url('https://images.gptkong.com/demo/sample2.png'); }
.parallax-2 { background-image: url('https://images.gptkong.com/demo/sample3.png'); }
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    padding: 20px;
}
.gallery img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}
@media (max-width: 768px) {
    .banner {
        height: auto;
        padding: 20px;
    }
    button {
        font-size: 14px;
        padding: 8px 16px;
    }
}