.announcement-banner{background:linear-gradient(90deg,#8b5cf6,#6d28d9 50%,#4c1d95);color:#fff;padding:12px 0;position:relative;z-index:1001;border-bottom:1px solid hsla(0,0%,100%,.2);animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-100%)}to{opacity:1;transform:translateY(0)}}.banner-content{max-width:1200px;margin:0 auto;justify-content:space-between;padding:0 20px;position:relative}.banner-content,.banner-left{display:flex;align-items:center}.banner-left{gap:8px}.banner-year{font-size:14px;font-weight:500;opacity:.9}.banner-main-text{font-size:24px;font-weight:700;letter-spacing:1px}.banner-center{flex:1 1;text-align:center;margin:0 20px}.banner-description{font-size:14px;font-weight:500;white-space:nowrap}.register-link{color:#fff;text-decoration:none;font-weight:600;transition:color .2s ease}.register-link:hover{color:#f0dc44;text-decoration:underline}.countdown-container{display:inline-flex;align-items:center;gap:8px;margin-left:12px;font-size:12px}.countdown-icon{width:14px;height:14px;opacity:.8}.countdown-text{font-weight:500;opacity:.9}.countdown-timer{display:flex;align-items:center;gap:4px;background:hsla(0,0%,100%,.1);padding:4px 8px;border-radius:12px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.countdown-item{display:flex;flex-direction:column;align-items:center;min-width:20px}.countdown-number{font-weight:700;font-size:14px;line-height:1}.countdown-separator{font-weight:700;font-size:12px;opacity:.6;margin:0 2px}.banner-close-btn{background:#fff;border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;flex-shrink:0}.banner-close-btn:hover{background:#f3f4f6;transform:scale(1.05)}.banner-close-btn svg{width:18px;height:18px;color:#374151}@media (max-width:768px){.banner-content{flex-direction:column;gap:12px;text-align:center}.banner-left{order:1}.banner-center{order:2;margin:0}.banner-close-btn{order:3;position:absolute;top:12px;right:20px}.banner-description{white-space:normal;line-height:1.4}.countdown-container{flex-direction:column;gap:6px;margin-top:6px;margin-left:0;display:flex}.countdown-timer{padding:6px 12px}}@media (max-width:480px){.banner-main-text{font-size:20px}.banner-description{font-size:13px}.countdown-container{font-size:11px}.countdown-number{font-size:13px}.countdown-label{font-size:9px}.countdown-timer{padding:4px 8px;gap:2px}.countdown-item{min-width:18px}}