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

body {
    font-family: "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

.instructions {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.progress-container {
    margin-bottom: 30px;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background-color: #eee;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress {
    width: 0%;
    height: 100%;
    background-color: #3498db;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: #666;
    font-size: 14px;
}

.questions-container {
    margin-bottom: 30px;
}

.question {
    background-color: #fff;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: none;
}

.question.active {
    display: block;
}

.question-text {
    margin-bottom: 15px;
    font-weight: bold;
    font-size: 16px;
    line-height: 1.5;
}

.options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.option {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.option input[type="radio"] {
    cursor: pointer;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.nav-btn, .submit-btn {
    padding: 12px 24px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
}

.nav-btn:hover, .submit-btn:hover {
    background-color: #2980b9;
}

.results {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    margin-top: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chart-container {
    width: 100%;
    height: 400px;
    margin: 20px 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

#giftChart {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

.gift-result {
    margin: 10px 0;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
}