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

body {
    font-family: 'Rajdhani', sans-serif;
    background: #000000;
    color: #ffffff;
    overflow-x: hidden;
}

.orbitron {
    font-family: 'Orbitron', sans-serif;
}

/* 动态背景 */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: radial-gradient(ellipse at 20% 30%, rgba(0, 100, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 0, 150, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(0, 255, 200, 0.1) 0%, transparent 60%);
    animation: bgShift 20s ease-in-out infinite;
}

@keyframes bgShift {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* 网格背景 */
.grid-bg {
    background-image:
        linear-gradient(rgba(0, 200, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 200, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* 发光效果 */
.glow-cyan {
    box-shadow: 0 0 20px rgba(0, 200, 255, 0.5), 0 0 40px rgba(0, 200, 255, 0.3);
}

.glow-pink {
    box-shadow: 0 0 20px rgba(255, 0, 150, 0.5), 0 0 40px rgba(255, 0, 150, 0.3);
}

.glow-text {
    text-shadow: 0 0 10px rgba(0, 200, 255, 0.8), 0 0 20px rgba(0, 200, 255, 0.6);
}

/* 按钮动画 */
.btn-download {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-download:hover::before {
    width: 300px;
    height: 300px;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 200, 255, 0.7), 0 0 60px rgba(0, 200, 255, 0.5);
}

/* 截图卡片动画 */
.screenshot-card {
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.screenshot-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 200, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
}

.screenshot-card:hover::after {
    left: 100%;
}

.screenshot-card:hover {
    transform: scale(1.05) translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 200, 255, 0.3);
}

/* 粒子效果容器 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: rgba(0, 200, 255, 0.6);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

/* 滚动动画 */
.scroll-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.scroll-fade-in.active {
    opacity: 1;
    transform: translateY(0);
}