body { 
    background-color: #050505; 
    color: #E5E5E5; 
}
.glass-panel { 
    background: rgba(255, 255, 255, 0.02); 
    backdrop-filter: blur(12px); 
    -webkit-backdrop-filter: blur(12px); 
    border: 1px solid rgba(255, 255, 255, 0.08); 
}
.glow-text { 
    text-shadow: 0 0 40px rgba(59, 130, 246, 0.5); 
}
.gradient-text { 
    background: linear-gradient(to right, #60A5FA, #A78BFA); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
}
/* 多语言下拉菜单动画与显隐 */
.lang-dropdown { 
    visibility: hidden; 
    opacity: 0; 
    transform: translateY(10px); 
    transition: all 0.2s ease-in-out; 
}
.lang-group:hover .lang-dropdown { 
    visibility: visible; 
    opacity: 1; 
    transform: translateY(0); 
}