/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局字体 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    position: relative;
    /* 移除全局鼠标样式，使用系统默认 */
}

/* 深色背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0f0f23;
    background: linear-gradient(135deg, #0f0f23 0%, #16213e 50%, #1a1a2e 100%);
    z-index: -3;
}

/* 动态背景粒子容器 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 粒子样式 */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: rise 8s linear infinite;
    box-shadow: 0 0 10px currentColor, 0 0 20px currentColor;
    opacity: 0.7;
}

/* 粒子上升动画 */
@keyframes rise {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.2;
    }
    50% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-1500px) rotate(360deg);
        opacity: 0;
    }
}

/* 按钮指针样式 */
button, a, .btn {
    cursor: pointer;
}

/* 链接指针样式 */
a {
    cursor: pointer;
}