/* Always-on logo breathing glow; no other atmosphere effects. */
#hd .hdc h2{position:relative;z-index:2}
.bian-logo{animation:bian-logo-breathe 7s ease-in-out infinite}
@keyframes bian-logo-breathe{0%,100%{filter:drop-shadow(0 0 3px #a619304d) drop-shadow(0 0 8px #830e2826)}46%{filter:drop-shadow(0 0 5px #ff485ad9) drop-shadow(0 0 12px #e51e43a6) drop-shadow(0 0 24px #a50b3a66)}70%{filter:drop-shadow(0 0 5px #cc254c80) drop-shadow(0 0 12px #a5103a40)}}
@media(prefers-reduced-motion:reduce){.bian-logo{animation:none;filter:drop-shadow(0 0 4px #b3213555)}}