* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

h1 {
    color: #333;
}

#about-btn {
    padding: 8px 16px;
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

#about-btn:hover {
    background-color: #e0e0e0;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

.modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
}

.modal-content p {
    margin-bottom: 10px;
    line-height: 1.5;
}

.modal-content a {
    color: #4CAF50;
    text-decoration: none;
}

.modal-content a:hover {
    text-decoration: underline;
}

.upload-section {
    text-align: center;
    margin-bottom: 30px;
}

#image-upload {
    margin-right: 10px;
    padding: 8px;
}

#process-btn {
    padding: 8px 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

#process-btn:hover {
    background-color: #45a049;
}

.image-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.image-section {
    margin: 20px;
    text-align: center;
}

.image-section h2 {
    margin-bottom: 10px;
    font-size: 16px;
    color: #666;
}

#original-image {
    max-width: 100%;
    max-height: 400px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

#result-canvas {
    max-width: 100%;
    max-height: 400px;
    border: 1px solid #ddd;
    border-radius: 4px;
}