body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #3f9b0b, #87CEEB);
    overflow-x: hidden;
}
h1, h2, h3 {
    font-family: 'Roboto', sans-serif;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}
h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-top: 20px;
    background: linear-gradient(90deg, #4a86e8, #ffcc00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
h2 {
    font-size: 2rem;
    margin: 30px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #fff;
}
h3 {
    font-size: 1.5rem;
    margin: 25px 0 15px;
}
p {
    font-size: 1rem;
    margin: 15px 0;
    color: #444;
}
a {
    color: #ffcc00;
    text-decoration: none;
    transition: color 0.3s ease-in-out;
}
a:hover {
    color: #ff9900;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
.section {
    width: 100%;
    margin-bottom: 40px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.left-col {
    width: 48%;
    float: left;
    text-align: center;
}
.right-col {
    width: 48%;
    float: right;
}
@media (max-width: 768px) {
    .left-col, .right-col {
        width: 100%;
        float: none;
    }
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 10px 0;
}
pre {
    background: #2d2d2d;
    color: #fff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}
code {
    color: #ffcc00;
    background: #2d2d2d;
    padding: 2px 5px;
    border-radius: 3px;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}
th {
    background: #4a86e8;
    color: #fff;
}
td {
    background: #f9f9f9;
}
button {
    background: #ffcc00;
    color: #333;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease-in-out;
}
button:hover {
    background: #ff9900;
}
.tip {
    text-align: center;
    margin: 20px 0;
    font-size: 1.2rem;
    color: #ffcc00;
    font-weight: bold;
}