/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #000046, #1cb5e0);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
    padding: 20px;
    box-sizing: border-box;
}

header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #1d1e3c, #3a3b6d);
    color: #fff;
    font-size: 1.8rem;
    font-weight: bold;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

h1, h2, h3, h4, h5, h6 {
    color: #ff9f1c;
    font-weight: bold;
    margin-top: 30px;
    margin-bottom: 15px;
}

p {
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

pre {
    background: #1d1e3c;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 0.9rem;
    color: #fff;
}

code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 3px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

th {
    background: #3a3b6d;
    color: #ff9f1c;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 20px 0;
}

.button {
    display: inline-block;
    padding: 10px 20px;
    background: #ff9f1c;
    color: #000;
    font-weight: bold;
    border-radius: 5px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.button:hover {
    transform: scale(1.1);
    box-shadow: 0px 8px 15px rgba(0, 0, 0, 0.2);
}

.parallax {
    height: 100vh;
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}

@media (max-width: 768px) {
    header {
        font-size: 1.4rem;
        padding: 20px;
    }

    pre {
        font-size: 0.8rem;
    }

    .parallax {
        height: 50vh;
    }
}