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

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    font-family: 'Microsoft YaHei', 'SimHei', sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 10px;
    overflow-x: hidden;
}

h1 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 24px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

button {
    padding: 10px 20px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}