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

:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #ffe66d;
    --dark-bg: #1a1a2e;
    --light-bg: #f7f7f7;
    --text-color: #333;
    --border-radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    overflow: hidden;
    background: var(--dark-bg);
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

button:active {
    transform: scale(0.95);
}

/* 响应式 */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
}