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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.container {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.content {
    flex: 1;
}

.title {
    font-size: 24px;
    margin-bottom: 10px;
    font-weight: bold;
}

.subtitle {
    color: #666;
    font-size: 14px;
    margin-bottom: 20px;
}

.rules {
    list-style-position: inside;
    padding-left: 0;
}

.rules li {
    margin-bottom: 15px;
    font-size: 16px;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-content p {
    margin-bottom: 15px;
    text-indent: 2em;
}

.article-section {
    margin-bottom: 25px;
}

.article-section h2 {
    font-size: 18px;
    margin-bottom: 10px;
    margin-bottom: 15px;
    color: #333;
    font-weight: bold;
}

.feature-list {
    list-style-position: inside;
    padding-left: 0;
    margin-bottom: 20px;
}

.feature-list li {
    margin-bottom: 15px;
    font-size: 16px;
    padding-left: 20px;
    position: relative;
}

.feature-list li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #666;
}

.guide-steps {
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.guide-steps ol {
    padding-left: 20px;
}

.guide-steps li {
    margin-bottom: 12px;
}

.example {
    margin-top: 20px;
    padding: 15px;
    background-color: #f5f5f5;
    border-radius: 8px;
}

.qrcode {
    width: 200px;
    flex-shrink: 0;
}

.qrcode img {
    width: 100%;
    height: auto;
}

.qrcode-text {
    text-align: center;
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: #3460B9;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    margin-bottom: 20px;
    font-size: 15px;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(52, 96, 185, 0.3);
    transition: all 0.3s ease;
}

.back-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 96, 185, 0.5);
    background-color: #284a94;
}

.back-home::before {
    content: "🏠";
    font-size: 16px;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .qrcode {
        width: 150px;
        margin: 20px auto 0;
    }

    .title {
        font-size: 20px;
    }

    .rules li {
        font-size: 14px;
    }

    .article-content {
        font-size: 14px;
    }
}