* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

.container {
    max-width: 500px;
    width: 100%;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-top: 20px;
}

.header {
    background: linear-gradient(135deg, #4a6cf7, #6a82fb);
    color: white;
    padding: 25px 20px;
    text-align: center;
}

.header h1 {
    font-size: 24px;
    margin-bottom: 8px;
}

.header p {
    opacity: 0.9;
    font-size: 15px;
}

.content {
    padding: 25px;
}

.search-section {
    text-align: center;
}

.search-section h2 {
    color: #4a6cf7;
    margin-bottom: 20px;
    font-size: 20px;
}

.input-group {
    margin-bottom: 20px;
}

.license-input {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5f0;
    border-radius: 12px;
    font-size: 16px;
    text-align: center;
    transition: border-color 0.3s;
}

.license-input:focus {
    border-color: #4a6cf7;
    outline: none;
}

.search-button {
    width: 100%;
    background: #4a6cf7;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 16px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(74, 108, 247, 0.3);
}

.search-button:hover {
    background: #3a5ce5;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(74, 108, 247, 0.4);
}

.error-message {
    color: #e74c3c;
    text-align: center;
    padding: 15px;
    background-color: #fdf2f2;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
}

.footer {
    text-align: center;
    margin-top: 30px;
    color: #666;
    font-size: 14px;
}

@media (max-width: 480px) {
    .container {
        margin-top: 10px;
    }
    
    .header {
        padding: 20px 15px;
    }
    
    .content {
        padding: 20px;
    }
}