body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
}

header {
    background-color: #0a0a0a;
    color: #ffffff;
    padding: 20px 40px;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

main {
    padding: 40px;
}

#search {
    width: 100%;
    padding: 10px 15px;
    font-size: 16px;
    margin-bottom: 20px;
    border-radius: 6px;
    border: 1px solid #ddd;
}

.category {
    margin-bottom: 20px;
}

.category-title {
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    background-color: #f0f0f0;
    padding: 10px 15px;
    border-radius: 6px;
    user-select: none;
}

.function-list {
    list-style: none;
    padding-left: 0;
    margin-top: 10px;
    display: none; /* 默认折叠 */
}

.function-list li {
    margin: 5px 0;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background-color: #f9f9f9;
    cursor: pointer;
    transition: background 0.2s;
}

.function-list li:hover {
    background-color: #e0e0e0;
}

.doc-section {
    margin-bottom: 30px;
}

.doc-section h3 {
    margin-bottom: 10px;
}

.doc-section p {
    line-height: 1.6;
    color: #333;
}

.doc-image {
    max-width: 100%;
    border-radius: 8px;
    margin: 10px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}