:root{--v3-bg:#07111d;--v3-panel:#101f31;--v3-line:#29435f;--v3-text:#f4f7fb;--v3-muted:#9db0c5;--v3-accent:#ffd43b;--v3-green:#61e3a4;--v3-blue:#64b5ff;--v3-orange:#ff9f68;--v3-red:#ff6577}
#megaboardCelebration{position:fixed;inset:0;z-index:10050;pointer-events:none;display:none;align-items:center;justify-content:center;background:radial-gradient(circle,rgba(255,212,59,.24),rgba(4,10,18,.92) 68%)}
#megaboardCelebration.show{display:flex;animation:mbFade 4.6s ease both}
#megaboardCelebration .celebration-card{width:min(94vw,1100px);padding:clamp(28px,6vw,70px);text-align:center;border:2px solid var(--v3-accent);border-radius:28px;background:linear-gradient(145deg,rgba(15,35,54,.98),rgba(6,16,28,.99));box-shadow:0 0 100px rgba(255,212,59,.38),0 35px 100px rgba(0,0,0,.6);animation:mbCelebrate 4.6s cubic-bezier(.18,.8,.2,1) both}
#megaboardCelebration .celebration-icon{font-size:clamp(3rem,10vw,7rem)}
#megaboardCelebration .celebration-kicker{margin-top:10px;color:var(--v3-accent);font-weight:1000;text-transform:uppercase;letter-spacing:.22em;font-size:clamp(.8rem,2vw,1.25rem)}
#megaboardCelebration .celebration-title{margin-top:10px;font-size:clamp(2rem,6vw,5.4rem);font-weight:1000;line-height:.98}
#megaboardCelebration .celebration-subtitle{margin-top:16px;color:#d5e2ef;font-size:clamp(1rem,2.3vw,1.5rem);font-weight:800}
#megaboardCelebration.train-laps .celebration-card{border-color:#64b5ff;box-shadow:0 0 110px rgba(100,181,255,.38),0 35px 100px rgba(0,0,0,.6)}
#megaboardCelebration.scale-miles .celebration-card{border-color:#61e3a4;box-shadow:0 0 110px rgba(97,227,164,.38),0 35px 100px rgba(0,0,0,.6)}
#megaboardCelebration.new-leader .celebration-card{border-color:#ffd43b}
#megaboardCelebration.first-train .celebration-card{border-color:#ff9f68;box-shadow:0 0 110px rgba(255,159,104,.38),0 35px 100px rgba(0,0,0,.6)}
@keyframes mbFade{0%{opacity:0}10%{opacity:1}82%{opacity:1}100%{opacity:0}}
@keyframes mbCelebrate{0%{transform:scale(.55) rotateX(16deg);filter:brightness(.55)}16%{transform:scale(1.08);filter:brightness(1.45)}30%{transform:scale(.98)}72%{transform:scale(1)}100%{transform:scale(.88) translateY(-28px);filter:brightness(.8)}}