/* atmosphere.css — grain + corner glow (perf-budget-aware: cut first if mobile fails) */
body{position:relative}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(60% 40% at 90% 0%, rgba(0,208,132,.10), rgba(12,22,17,0) 60%)}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}