/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Lato', sans-serif;
    color: #fff;
    line-height: 1.6;
    background: linear-gradient(135deg, #002B5B, #000033);
}
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    color: #FFC107;
}
a {
    color: #FFD700;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #FFA500;
}
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}
.hero-section {
    background: linear-gradient(rgba(0, 43, 91, 0.8), rgba(0, 0, 51, 0.8)), url('https://images.gptkong.com/demo/sample1.png');
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}
.hero-section h1 {
    font-size: 3em;
    margin-bottom: 20px;
}
.hero-section p {
    font-size: 1.2em;
    max-width: 600px;
}
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 500px;
    position: relative;
}
.parallax:nth-child(even) {
    background-image: url('https://images.gptkong.com/demo/sample2.png');
}
.parallax:nth-child(odd) {
    background-image: url('https://images.gptkong.com/demo/sample3.png');
}
.feature-section {
    padding: 50px 20px;
    background: #fff;
    color: #002B5B;
}
.feature-section img {
    max-width: 100%;
    height: auto;
    margin-bottom: 20px;
}
.code-block {
    background: #000033;
    color: #fff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Roboto Mono', monospace;
    margin: 20px 0;
}
.button {
    background-color: #FFC107;
    color: #002B5B;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 5px;
}
.button:hover {
    transform: scale(1.1);
    background-color: #FFD700;
}
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: linear-gradient(90deg, #002B5B, #000033);
    color: #fff;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}
.navbar a {
    color: #FFC107;
    margin: 0 15px;
}
.cta-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #FFC107;
    color: #002B5B;
    padding: 10px 20px;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}
.cta-button:hover {
    transform: translateY(-5px);
}
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2em;
    }
    .parallax {
        height: 300px;
    }
    .code-block {
        font-size: 0.9em;
    }
}