.top-bar{position:fixed;top:0;left:0;right:0;height:96px;background:hsla(0,0%,100%,.9);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:1000;box-shadow:0 8px 24px rgba(0,0,0,.08)}.top-bar-inner{height:100%;display:flex;justify-content:space-between;align-items:center;padding:0 24px}.top-bar-inner h1{margin:0;color:#1f2d3d;white-space:nowrap}.top-link{color:#5a6b80;font-size:1.2rem;font-weight:700;text-decoration:none}.session-title-wrapper{flex:1 1;overflow:hidden;display:flex;justify-content:center;align-items:center;margin:0 16px}.scroll{animation:sessionTitleScroll 20s linear infinite}@keyframes sessionTitleScroll{0%{transform:translateX(100%)}to{transform:translateX(-100%)}}@media (max-width:768px){.top-bar{height:72px}.top-bar-inner{padding:0 12px}.header-title{font-size:1.3rem}.header-side{width:80px}.top-link{font-size:1rem}}