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.masthead{height:56px}}.os-hero-root .pager{position:absolute;left:var(--edge);bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:9;display:flex;align-items:center;gap:4px;padding:4px 10px 4px 4px;border-radius:999px;background:#051321a6;border:1px solid #cbe5ff24;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 6px 22px rgba(0,0,0,.4)}.os-hero-root .pager-play{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:50%;background:transparent;color:#e3f8ff;padding:0;transition:background .2s}.os-hero-root .pager-play:hover{background:#c0e2fa1a}.os-hero-root .pager-play .icon{width:12px;height:12px;fill:currentColor}.os-hero-root .pager .chapter,.os-hero-root .pager-dots{display:flex;align-items:center}.os-hero-root .pager .chapter{flex:none;width:18px;height:28px;padding:0 5px;transition:width .45s var(--ease)}.os-hero-root .pager .chapter.is-selected{width:44px}.os-hero-root .pager .chapter-line{width:100%;height:8px;margin:0;border-radius:999px;background:#ffffff66;transition:background .2s}.os-hero-root .pager .chapter:hover .chapter-line{background:#ffffffb3}.os-hero-root .pager .chapter.is-selected .chapter-line{background:#ffffff33}.os-hero-root .pager .chapter-fill{border-radius:inherit}.os-hero-root .pager .chapter:not(.is-selected) .chapter-fill{opacity:0}.os-hero-root .experience.is-paused .pager .chapter.is-selected .chapter-fill{background:linear-gradient(90deg,#7ed6f7aa,#a3fff0aa)}.os-hero-root .experience.is-paused .pager .chapter.is-selected .chapter-line{animation:pager-breathe 1.8s ease-in-out infinite}@keyframes pager-breathe{50%{background:#ffffff55}}@media(orientation:portrait){.os-hero-root .pager{left:16px;bottom:calc(14px + env(safe-area-inset-bottom,0px))}}.os-hero-root .dialog-header .dialog-title{font-size:clamp(23px,2.3vw,30px);line-height:1.2;font-weight:500;letter-spacing:-.04em;margin:10px 0 0}.os-hero-root .viewer-toolbar .dialog-title{font-size:15px;line-height:1.2;letter-spacing:-.02em;font-weight:500;margin:5px 0 0}