* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    color: #fff;
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    background-image: url('https://source.unsplash.com/random/1920x1080/?landscape,nature');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* 背景覆盖层，使内容更容易阅读 */
.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6); /* 半透明黑色 */
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

.header h1 {
    font-size: 2.2rem;
    color: #fff;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.jump-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
    width: 100%;
}

.jump-card {
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 16px 20px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s, background-color 0.2s;
    text-align: center;
    font-size: 1.1rem;
    font-weight: bold;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    width: 100%;
}

.jump-card:hover {
    transform: translateX(8px);
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.3);
}

footer {
    text-align: center;
    padding: 20px 0;
    color: #aaa;
    margin-top: 20px;
    font-size: 0.9rem;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* 霓虹灯发光效果 */
@keyframes glow {
    0% {
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.8), 0 0 30px rgba(80, 170, 255, 0.6);
    }
    100% {
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }
}

.jump-card.glow {
    animation: glow 1s ease-in-out;
}

/* 响应式设计 */
@media (max-width: 600px) {
    .container {
        padding: 15px;
        max-width: 85%;
    }
    
    .header h1 {
        font-size: 1.8rem;
    }
    
    .jump-card {
        padding: 14px;
        font-size: 1rem;
    }
    
    .jump-card:hover {
        transform: translateX(5px);
    }
}