:root{color-scheme:light;--navy:#17283e;--blue:#3278c8;--bg:#f4f6f8;--panel:#fff;--line:#dce2e8;--ink:#17202b;--muted:#687584}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.5 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}button,select,input{font:inherit}button{cursor:pointer}button:focus-visible,select:focus-visible,input:focus-visible,label.open:focus-within{outline:2px solid #3278c8;outline-offset:3px}button:disabled{opacity:.4;cursor:wait}header{height:65px;background:var(--navy);color:white;display:flex;align-items:center;padding:0 30px;gap:50px}.brand{display:flex;align-items:center;gap:10px;color:white;text-decoration:none;font-size:17px;font-weight:600;letter-spacing:-.35px}.brand svg{width:35px;height:35px}nav{display:flex;height:100%;gap:30px;align-items:center;font-size:12px;color:#b4c2d2}nav span{height:100%;display:flex;align-items:center}nav .current{color:white;border-bottom:3px solid #77b8ff}.open{margin-left:auto;border:1px solid #8795a6;border-radius:30px;padding:8px 17px;cursor:pointer;font-size:12px}.open:hover{background:#ffffff18}.appbar{display:flex;align-items:center;justify-content:space-between;height:49px;padding:0 30px;background:#fff;border-bottom:1px solid var(--line)}.product{font-size:15px;font-weight:600;padding-right:23px;border-right:1px solid var(--line)}.breadcrumb{margin-left:23px;color:var(--muted);font-size:11px}.localbadge{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:7px}.localbadge i,.autodot{display:inline-block;width:6px;height:6px;background:#68b25d;border-radius:50%}main{max-width:2000px;margin:0 auto;display:grid;grid-template-columns:245px minmax(0,1fr);min-height:calc(100vh - 114px)}aside{background:white;border-right:1px solid var(--line);padding:29px 25px;display:flex;flex-direction:column}.eyebrow{font-size:9px;letter-spacing:1.3px;color:var(--muted);font-weight:600}h1{font-size:30px;line-height:1.16;letter-spacing:-1.1px;margin:16px 0;font-weight:650}.description{font-size:12px;color:var(--muted);line-height:1.7;margin:0 0 18px}.sessioninfo{font-size:11px;color:var(--muted);display:flex;flex-direction:column;gap:5px}.sessioninfo b{font-weight:500;color:#34445a}.divider{height:1px;background:var(--line);margin:23px 0}.check{display:flex;align-items:center;gap:9px;font-size:11px;margin-top:13px;cursor:pointer}.check input{width:14px;height:14px;margin:0;accent-color:var(--blue)}.sidebarbutton{padding:9px 10px;background:#fff;border:1px solid var(--line);color:#3c4b5f;border-radius:6px;font-size:11px;margin-top:10px;text-align:left}.sidebarbutton:hover{border-color:#8eb6e5;background:#f5f9ff}.bottomnote{display:flex;align-items:flex-start;gap:8px;font-size:10px;color:#85909d;margin-top:auto;padding-top:28px}.dot{width:5px;height:5px;background:var(--blue);border-radius:50%;margin-top:5px}.workspace{padding:22px 24px 12px;min-width:0}.stage{display:grid;grid-template-columns:minmax(0,1fr) 210px;border:1px solid #d8dfe7;border-radius:10px;overflow:hidden;background:white;box-shadow:0 4px 18px #1b355b07}.viewport{position:relative;height:calc(100vh - 250px);min-height:440px;max-height:1000px;background:#071322;overflow:hidden}.viewport canvas{display:block;width:100%;height:100%;touch-action:none}.viewtop,.viewbottom{position:absolute;left:16px;right:16px;display:flex;align-items:center;justify-content:space-between;z-index:2;pointer-events:none;gap:10px}.viewtop{top:15px}.spatialmode{display:flex;background:#111c2de6;border:1px solid #3c4a5e;border-radius:5px;overflow:hidden;color:#b8c6d8;align-items:center;font-size:8px;letter-spacing:1px;backdrop-filter:blur(10px)}.spatialmode>span{padding:7px 9px}.modeactive{background:#e8edf3;color:#14253b;font-weight:700;position:relative;min-width:42px;text-align:center}.modeactive i{display:block;background:#62bf51;height:3px;width:12px;margin:3px auto -4px}.viewbuttons{display:flex;gap:5px;pointer-events:auto}.viewbuttons button{font-size:10px;color:#d4dfec;background:#162235dd;border:1px solid #425166;border-radius:5px;padding:7px 10px}.viewbuttons button:hover{background:#293d58}.viewbottom{bottom:13px;color:#a1b4cd;font-size:9px}.viewbottom>span{background:#0d1b2bd9;padding:5px 7px;border-radius:4px}#layerstatus{white-space:nowrap;color:#a5cfff}.layers-panel{background:#fff;padding:17px 12px 12px;border-left:1px solid var(--line);overflow-y:auto;max-height:1000px}.panelhead{display:flex;gap:9px;align-items:center;margin:1px 2px 16px}.panelicon{font-size:25px;color:var(--blue)}.panelhead strong{display:block;font-size:12px;font-weight:600}.panelhead div>span{display:block;font-size:10px;color:var(--muted);margin-top:2px}.autolayer{display:flex;align-items:center;gap:8px;padding:9px 10px;width:100%;font-size:10px;background:#f6f8fb;border:1px solid #d9e1eb;color:#58677a;border-radius:5px;text-align:left;margin-bottom:12px}.autolayer.active{background:#eaf3ff;border-color:#8eb8e7;color:#2464a8}.layercards{display:flex;flex-direction:column;gap:6px}.layercard{display:flex;gap:9px;align-items:center;width:100%;background:#f7f9fb;border:1px solid #e2e7ee;color:#35445a;border-radius:5px;padding:3px 7px 3px 3px;text-align:left;transition:border-color .15s,background .15s}.layercard:hover{border-color:#8bb8e9;background:#eef5fe}.layercard.active{background:#eaf3ff;border-color:var(--blue);box-shadow:inset 3px 0 var(--blue)}.layercard img{width:64px;height:45px;object-fit:contain;border-radius:3px;background:#edf1f6}.layercard strong{display:block;font-size:11px;font-weight:600}.layercard small{display:block;font-size:9px;color:#8290a2;margin-top:1px}.layercard .checkmark{margin-left:auto;font-size:12px;color:var(--blue);visibility:hidden}.layercard.active .checkmark{visibility:visible}.layerhint{color:#85909e;font-size:9px;line-height:1.6;margin:12px 2px 0}.transport{padding-top:18px}.progress{display:flex}#timeline{width:100%;height:4px;margin:0;accent-color:var(--blue);cursor:pointer}.playbar{display:flex;justify-content:space-between;align-items:center;padding-top:15px;gap:12px}.playgroup{display:flex;align-items:center;gap:14px}button.play{border:0;background:var(--blue);color:white;width:40px;height:40px;border-radius:50%;padding:0;font-size:15px}.play:hover{background:#2364ac}.playgroup>button:not(.play){background:none;border:0;padding:7px 2px;color:#68788d;font-size:11px}.time{color:#8290a2;font-size:11px;font-variant-numeric:tabular-nums}.time b{color:#263a54;font-weight:500}.speedlabel{color:var(--muted);font-size:10px}#speed{font-size:11px;background:white;border:1px solid var(--line);border-radius:5px;padding:5px;color:#40536c}.footnote{font-size:9px;line-height:1.6;color:#8a96a4;margin:12px 0 0}.loader{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:#0b1728f5;color:#e2ebf8;text-align:center;padding:20px}.loader strong{font-size:14px;font-weight:500}.loader>span{font-size:11px;color:#9fb1ca}.spinner{width:29px;height:29px;border:2px solid #28405e;border-top-color:#71adf2;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:5px}.error{position:absolute;left:10%;right:10%;top:35%;padding:22px;border:1px solid #d79887;background:#462e29;color:#fff;border-radius:8px;z-index:5;font-size:12px}[hidden],.loader[hidden],.error[hidden]{display:none!important}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1100px){main{grid-template-columns:205px minmax(0,1fr)}aside{padding:25px 18px}.workspace{padding:18px 16px}.stage{grid-template-columns:minmax(0,1fr) 175px}.layers-panel{padding:14px 9px}.layercard img{width:51px;height:39px}.panelhead strong{font-size:11px}h1{font-size:27px}.viewbottom>span:first-child{display:none}.spatialmode>span:last-child{display:none}.viewtop{left:12px;right:12px}}@media(max-width:760px){header{height:57px;padding:0 16px;gap:15px}.brand{font-size:14px}.brand svg{width:29px;height:29px}nav{display:none}.open{font-size:10px;padding:7px 11px}.appbar{height:41px;padding:0 16px}.breadcrumb{font-size:10px;margin-left:13px}.product{font-size:13px;padding-right:13px}.localbadge{font-size:9px}main{display:flex;flex-direction:column}aside{padding:18px 16px;border-right:0;border-bottom:1px solid var(--line);display:block}h1{font-size:25px;margin:5px 0 10px}h1 br{display:none}aside>.eyebrow,.description,.sessioninfo,.divider,.bottomnote,.sidebarbutton,aside>.check:has(#hands),aside>.check:has(#grid){display:none}.check{display:inline-flex;font-size:10px;margin:0 12px 0 0}.workspace{padding:14px 12px}.stage{display:flex;flex-direction:column}.viewport{height:52vh;min-height:340px}.layers-panel{padding:10px;border-left:0;border-top:1px solid var(--line)}.panelhead,.layerhint{display:none}.autolayer{width:auto;margin:0 0 8px;font-size:10px;padding:6px 9px}.layercards{flex-direction:row;overflow:auto;gap:6px;padding-bottom:3px}.layercard{min-width:80px;max-width:80px;display:block;padding:3px}.layercard img{width:70px;height:45px}.layercard strong{font-size:9px;text-align:center}.layercard small,.layercard .checkmark{display:none}.playgroup{gap:10px}.footnote{font-size:8px}.speedlabel{display:none}.viewtop{top:12px}}
@media(min-width:761px){.stage{height:calc(100vh - 250px);min-height:440px;max-height:1000px}.viewport{height:100%;min-height:0}.layers-panel{min-height:0;max-height:100%}}

.presenter{font-size:11px;color:#3278c8;margin:0 0 17px;font-weight:500}
/* Typography, grouping and separators refined for a quieter desktop interface. */
:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;--line:rgba(27,47,73,.10);--bg:#f5f5f7;--muted:#6e7580}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased}header{height:58px;padding:0 28px;gap:45px}.brand{font-size:17px;font-weight:600;letter-spacing:-.45px}.brand svg{width:32px;height:32px}nav{font-size:13px;gap:28px}.open{font-size:12px;border-color:#ffffff45;padding:8px 15px}.appbar{height:42px;padding:0 28px;border-bottom-color:var(--line)}.product{display:none}.breadcrumb{font-size:12px;margin:0}.localbadge{font-size:11px}main{grid-template-columns:248px minmax(0,1fr);min-height:calc(100vh - 100px)}aside{background:#fbfbfc;padding:25px 24px;border-right-color:var(--line)}.eyebrow{font-size:11px;letter-spacing:.2px;font-weight:500;color:#737c89}h1{font-size:32px;font-weight:600;letter-spacing:-.9px;line-height:1.13;margin:14px 0}.description{font-size:13px;line-height:1.55;margin-bottom:16px}.presenter{font-size:12px;font-weight:500;margin-bottom:15px}.sessioninfo{font-size:12px;gap:3px}.divider{margin:19px 0;background:var(--line);height:.5px}.check{font-size:13px;gap:10px;margin-top:13px}.check input{width:15px;height:15px}.sidebarbutton{font-size:12px;padding:9px 11px;border:0;background:#eef0f3;border-radius:7px;margin-top:9px}.sidebarbutton:hover{background:#e4eaf2}.bottomnote{font-size:11px;color:#7e8793;line-height:1.55;padding-top:22px}.workspace{padding:20px 22px 12px}.stage{grid-template-columns:minmax(0,1fr) 226px;border:0;border-radius:13px;box-shadow:0 1px 3px #1b355b0b}.layers-panel{background:#fcfcfd;border-left:.5px solid var(--line);padding:18px 12px}.panelhead{gap:10px;margin:0 7px 17px}.panelicon{font-size:22px;line-height:1}.panelhead strong{font-size:13px;font-weight:600;letter-spacing:-.15px}.panelhead div>span{font-size:11px;color:#808a97;margin-top:3px}.autolayer{font-size:12px;border:0;border-radius:8px;background:#eef0f4;padding:10px 12px;margin-bottom:12px;gap:8px;color:#59667a}.autolayer.active{background:#e7effc;color:#286bb5}.layercards{gap:3px}.layercard{border:0;box-shadow:none;background:transparent;border-radius:8px;padding:6px 9px;gap:11px}.layercard:hover{background:#eef1f5;border:0}.layercard.active{background:#e6effd;border:0;box-shadow:none;color:#2367b4}.layercard img{width:58px;height:43px;border-radius:5px;background:#edf0f4}.layercard strong{font-size:13px;font-weight:500;letter-spacing:-.1px}.layercard small{font-size:11px;margin-top:2px;color:#7f8b9a}.layercard .checkmark{font-size:13px}.layerhint{font-size:11px;line-height:1.5;margin:15px 8px 0;color:#818b98}.viewtop{top:15px;left:15px;right:15px}.spatialmode{border:1px solid #ffffff72;background:#f3f7fbcb;box-shadow:0 2px 10px #10284210;border-radius:8px;color:#41536b;font-size:10px;letter-spacing:.3px;backdrop-filter:blur(16px)}.spatialmode>span{padding:7px 10px}.modeactive{background:#ffffffa3;color:#1c3656;font-weight:600;min-width:42px}.viewbuttons{gap:6px}.viewbuttons button{font-size:11px;font-weight:500;color:#354b67;background:#f3f7fbdb;border:1px solid #ffffff7a;border-radius:8px;box-shadow:0 2px 10px #1028420d;padding:7px 11px;backdrop-filter:blur(16px)}.viewbuttons button:hover{background:#fff}.viewbottom{font-size:10px}.viewbottom>span{background:#edf4fbe6;color:#526a87;border-radius:6px;padding:5px 8px}#layerstatus{color:#3f6186}.transport{padding-top:20px}.playbar{padding-top:15px}.playgroup{gap:15px}button.play{height:42px;width:42px;font-size:16px}.playgroup>button:not(.play){font-size:12px}.time{font-size:13px}.time b{font-weight:500}.speedlabel{font-size:12px}#speed{font-size:12px;border:0;border-radius:7px;background:#e9ecf1;padding:6px 8px}.footnote{font-size:10px;line-height:1.55;margin-top:14px;color:#8a929d}@media(min-width:761px){.stage{height:calc(100vh - 238px)}}@media(max-width:1100px){main{grid-template-columns:216px minmax(0,1fr)}aside{padding:23px 18px}.stage{grid-template-columns:minmax(0,1fr) 192px}.workspace{padding:18px 16px}.layercard{gap:9px;padding:6px}.layercard img{width:48px;height:40px}.layercard strong{font-size:12px}.layercard small{font-size:10px}.panelhead strong{font-size:12px}h1{font-size:29px}.check{font-size:12px}.brand{font-size:16px}}@media(max-width:760px){header{height:56px;padding:0 15px;gap:10px}.brand{font-size:14px}.brand svg{width:28px;height:28px}.open{font-size:11px;padding:7px 11px}.appbar{height:39px;padding:0 16px}.breadcrumb{font-size:11px}.localbadge{font-size:10px}main{display:flex}aside{padding:17px 16px}h1{font-size:27px;margin:4px 0 9px}.presenter{font-size:12px;margin:0 0 14px}.check{font-size:12px;margin:0 13px 0 0;gap:6px}.workspace{padding:12px}.stage{height:auto;border-radius:12px}.layers-panel{padding:11px;border-left:0}.autolayer{font-size:11px;padding:7px 10px;margin-bottom:9px}.layercard{min-width:85px;max-width:85px;padding:4px}.layercard img{width:75px;height:47px}.layercard strong{font-size:11px;padding:3px 0}.layercard small{display:none}.playgroup{gap:11px}.time{font-size:12px}.speedlabel{display:none}.footnote{font-size:10px}.viewport{height:53vh;min-height:340px}}

.eyebrow{color:#667181}.layerhint,.bottomnote{color:#687584}.layercard small,.panelhead div>span{color:#6b7582}.footnote{color:#68717e}
/* The spatial scene fills the window; all controls float above it. */
:root{--glass:rgba(248,251,255,.62);--glass-edge:rgba(255,255,255,.66);--glass-shadow:0 14px 45px rgba(27,55,85,.12),0 1px 2px rgba(27,55,85,.05)}html,body{width:100%;height:100%;overflow:hidden;background:#a4bed4}main,.workspace,.stage{display:contents!important}.viewport{position:fixed!important;inset:0!important;z-index:0;width:100vw!important;height:100dvh!important;min-height:0!important;max-height:none!important;border:0!important;border-radius:0!important;box-shadow:none!important}.viewport canvas{width:100%;height:100%;display:block}header,aside,.layers-panel,.transport{background:var(--glass);border:1px solid var(--glass-edge);box-shadow:var(--glass-shadow);-webkit-backdrop-filter:blur(26px) saturate(155%);backdrop-filter:blur(26px) saturate(155%)}header{position:fixed;z-index:8;top:18px;left:20px;right:20px;height:62px;padding:0 20px;border-radius:17px;color:#18324d;gap:42px}.brand{color:#18324d}.brand svg{width:34px;height:34px}nav{color:#5b7089}nav .current{color:#18324d;border-bottom-color:#387bc5}.open{color:#24445f;border-color:#2d557f26;background:#ffffff45}.open:hover{background:#fff9}.appbar{display:none}aside{position:fixed;z-index:5;top:103px;left:20px;bottom:147px;width:238px;border-radius:17px;padding:21px 20px;overflow:auto;scrollbar-width:thin;scrollbar-color:#6f8aa340 transparent}h1{font-size:30px;margin:12px 0 13px}.description{font-size:12px}.presenter{font-size:12px}.divider{margin:16px 0;background:#254d7518}.check{font-size:12px;margin-top:11px}.sidebarbutton{background:#ffffff50;border:1px solid #ffffff35}.sidebarbutton:hover{background:#ffffffe0}.bottomnote{font-size:10px;margin-top:22px;padding-top:0}.layers-panel{position:fixed;z-index:5;top:103px;right:20px;bottom:147px;width:220px;max-height:none;min-height:0;border-radius:17px;padding:19px 12px;overflow:auto;scrollbar-width:thin;scrollbar-color:#6f8aa340 transparent}.panelhead{margin:0 5px 16px}.panelicon{display:flex;align-items:center;color:#2d639d}.panelicon svg{width:28px;height:28px}.panelhead strong{font-size:13px}.autolayer{background:#ffffff50;border:1px solid #ffffff30}.autolayer.active{background:#e4effcaa;border-color:#d9e9ff88}.layercard{background:transparent}.layercard:hover{background:#ffffff68}.layercard.active{background:#dceafea8}.layercard img{background:#ffffff50}.layerhint{font-size:10px}.viewtop{position:fixed;z-index:4;left:50%;right:auto;top:103px;transform:translateX(-50%);width:auto;gap:12px;white-space:nowrap}.spatialmode{border-radius:10px}.viewbuttons button{border-radius:10px}.viewbottom{position:fixed;left:50%;right:auto;bottom:139px;transform:translateX(-50%);width:max-content;max-width:calc(100vw - 560px);z-index:3;font-size:10px}.viewbottom>span:first-child{display:none}.transport{position:fixed;z-index:7;left:50%;bottom:22px;transform:translateX(-50%);width:min(720px,calc(100vw - 80px));padding:18px 23px 16px;border-radius:20px}.playbar{padding-top:15px}.progress{padding:0 2px}#timeline{background:transparent}.playgroup>button:not(.play){color:#47617f}#speed{background:#ffffff60}.footnote{display:none}.loader{background:linear-gradient(180deg,#acc5ddf5,#789cbbf5);color:#18324d}.loader>span{color:#496582}.spinner{border-color:#ffffff68;border-top-color:#3b78b8}.error{left:calc(50% - 190px);right:auto;top:35%;max-width:380px}.check span,.sessioninfo,.description,.bottomnote{color:#4d637d}@media(min-width:761px){.stage{height:auto;min-height:0;max-height:none}}@media(max-width:1100px){header{left:16px;right:16px;top:16px;gap:30px}aside{left:16px;width:212px;padding:20px 17px}.layers-panel{right:16px;width:196px;padding:18px 10px}.viewbottom{max-width:calc(100vw - 470px)}.transport{width:min(670px,calc(100vw - 60px))}.layercard img{width:48px;height:40px}.layercard strong{font-size:12px}}@media(max-width:800px){header{height:56px;padding:0 15px;border-radius:15px}nav{display:none}aside{top:91px;bottom:auto;max-height:calc(100dvh - 260px);width:200px;padding:17px 16px}.layers-panel{top:91px;bottom:142px;width:174px;padding:16px 9px}.panelhead strong{font-size:11px}.panelhead div>span{font-size:10px}.panelicon svg{width:23px;height:23px}.layercard{gap:7px;padding:5px}.layercard img{width:42px;height:36px}.layercard small{font-size:9px}.layercard strong{font-size:11px}.autolayer{font-size:11px;padding:8px}.viewtop{top:91px}.spatialmode>span:last-child{display:none}.viewbuttons button{font-size:10px;padding:7px}.viewbottom{bottom:133px;max-width:60vw}.transport{bottom:16px;width:calc(100vw - 40px);padding:16px 20px;border-radius:18px}h1{font-size:26px}}@media(max-width:620px){header{left:12px;right:12px;top:12px;height:53px;padding:0 13px}.brand{font-size:14px}.brand svg{width:30px;height:30px}.open{font-size:11px;padding:7px 10px}aside{left:12px;top:79px;bottom:auto;width:min(240px,calc(100vw - 24px));max-height:166px;padding:15px 16px;border-radius:14px}.eyebrow{font-size:10px}h1{font-size:23px;margin:5px 0 6px}h1 br{display:none}.presenter{margin:0 0 9px;font-size:11px}aside>.description,aside>.sessioninfo,aside>.eyebrow,aside>.divider,aside>.sidebarbutton,aside>.bottomnote,aside>.check:has(#hands),aside>.check:has(#grid){display:none}.check{display:inline-flex;margin:0 9px 0 0;font-size:10px;gap:5px}.check input{width:12px;height:12px}.layers-panel{left:12px;right:12px;top:auto;bottom:132px;width:auto;max-height:106px;padding:9px 10px;border-radius:14px;overflow:hidden}.panelhead,.layerhint{display:none}.autolayer{position:absolute;right:9px;top:8px;width:auto;margin:0;font-size:10px;padding:5px 8px}.layercards{display:flex;flex-direction:row;gap:5px;padding-top:23px;overflow-x:auto}.layercard{min-width:66px;max-width:66px;display:flex;flex-direction:column;gap:0;padding:3px 4px;border-radius:6px}.layercard img{width:43px;height:27px}.layercard strong{font-size:10px;padding:2px 0 0}.layercard small,.layercard .checkmark{display:none}.viewtop{top:79px;left:auto;right:12px;transform:none;display:block}.spatialmode{display:none}.viewbuttons{display:flex;flex-direction:column;gap:6px}.viewbuttons button{padding:7px 9px;font-size:10px}.viewbottom{bottom:249px;max-width:80vw}.transport{left:12px;right:12px;bottom:12px;transform:none;width:auto;padding:15px 17px 13px;border-radius:16px}.playgroup{gap:10px}.speedlabel{display:none}.time{font-size:12px}.viewport{min-height:0!important}.loader strong{font-size:13px}.error{left:8%;right:8%;max-width:none;font-size:12px}}@media(max-width:480px){.brand span{display:none}.brand svg{width:32px;height:32px}.open{font-size:11px}}
.check span,.sessioninfo,.description,.bottomnote{color:#35516f}.layers-panel .layerhint,.layers-panel .layercard small,.layers-panel .panelhead div>span{color:#526780}
/* High contrast glass over the Spatial OS room. */
:root{--glass:rgba(250,252,255,.86);--glass-edge:rgba(255,255,255,.78);--glass-shadow:0 16px 48px rgba(0,8,20,.26),0 1px 3px rgba(0,8,20,.12)}header,aside,.layers-panel,.transport{color:#17283e}.brand,h1,.panelhead strong{color:#132a44}nav,.eyebrow,.check span,.sessioninfo,.description,.bottomnote,.layerhint,.layers-panel .layerhint,.layers-panel .layercard small,.layers-panel .panelhead div>span{color:#3d5068}.presenter{color:#174e88}.open{background:#ffffff65;color:#193e65;border-color:#365c852c}.layercard{color:#233f5d}.layercard.active{background:#cde2ff;box-shadow:inset 0 0 0 1px #6398d1;color:#123f77}.layercard .checkmark{color:#124b8d}.autolayer{color:#334c67;background:#ffffff80}.autolayer.active{background:#cee3ff;color:#144477;border-color:#78a5d7}.sidebarbutton{color:#233e5d;background:#ffffff80;border-color:#4a6c8e22}.playgroup>button:not(.play),.time,.speedlabel{color:#3d5068}.time b{color:#17283e}#speed{color:#213c5c;background:#ffffffa8}.viewtop .spatialmode,.viewbuttons button,.viewbottom>span{background:#f4f8fff0;color:#203f63;border-color:#ffffffc4}#layerstatus{color:#173e69}.modeactive{color:#142d4d}.layercard small{color:#3d5068}.divider{background:#34577526}.check input{accent-color:#2367b5}
/* Reflective glass with a consistent high-contrast type treatment. */
:root{--glass:rgba(245,250,255,.76);--glass-edge:rgba(255,255,255,.9);--glass-shadow:inset 0 1px 0 rgba(255,255,255,.95),inset 0 -1px 0 rgba(255,255,255,.16),0 18px 60px rgba(0,8,20,.32),0 2px 8px rgba(0,8,20,.16)}header,aside,.layers-panel,.transport{background:linear-gradient(145deg,rgba(255,255,255,.84),rgba(225,239,255,.70));border-color:var(--glass-edge);-webkit-backdrop-filter:blur(34px) saturate(185%);backdrop-filter:blur(34px) saturate(185%);color:#0e223b}header,.transport{background:linear-gradient(145deg,rgba(255,255,255,.91),rgba(223,238,255,.74))}h1,.brand,.panelhead strong{color:#0b203a}nav,.eyebrow,.check span,.sessioninfo,.description,.bottomnote,.layerhint,.layers-panel .layerhint,.layers-panel .layercard small,.layers-panel .panelhead div>span,.playgroup>button:not(.play),.time,.speedlabel{color:#243a56}.check span{font-weight:500}.layercard{color:#152e4e}.presenter{color:#0a457f}.viewbuttons{align-items:center}.viewbuttons button{background:linear-gradient(145deg,rgba(255,255,255,.94),rgba(226,239,255,.83));border:1px solid #ffffffeb;box-shadow:inset 0 1px 0 #fff,0 3px 16px #00112638;color:#112e51;font-weight:600}.viewbuttons .orbit{display:inline-flex;align-items:center;gap:7px}.orbit svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.viewbuttons .orbit.active{background:linear-gradient(145deg,#3c8cdddc,#1558a8ee);color:#fff;border-color:#b7dcffb0;box-shadow:inset 0 1px 0 #ffffff65,0 3px 16px #00112642}.viewbuttons .orbit.active:hover{background:#1b64b4}.autolayer.active,.layercard.active{background:#c8e0ffdb;color:#0c3b72;box-shadow:inset 0 0 0 1px #4d89c7}.layercard small{color:#243a56}.viewbottom>span{background:#f4f9fff0;color:#15395e;box-shadow:0 3px 14px #00112630}.time b{color:#112b49}.time{font-weight:500}.open{color:#193c63;background:#ffffff65;border-color:#264a7238}#speed{color:#173858;background:#ffffff94}.sidebarbutton{color:#173858;background:#ffffff8a}.play{box-shadow:inset 0 1px 0 #ffffff60,0 3px 12px #0b407331}@media(max-width:620px){.viewbuttons{align-items:stretch}.orbit-label{display:none}.viewbuttons .orbit{justify-content:center;padding:9px}.orbit svg{width:17px;height:17px}}

/* Borderless light glass. */
header,aside,.layers-panel,.transport,.viewtop .spatialmode,.viewbuttons button,.viewbottom>span,.open,.sidebarbutton,.autolayer,#speed{border:0!important}.autolayer.active,.layercard.active{box-shadow:none!important}.layercard.active{background:#bcd8fcc7}.autolayer.active{background:#bad8fdc7}.viewbuttons button{box-shadow:0 3px 16px #00112628}.light-indicator{position:fixed;z-index:6;display:flex;align-items:center;gap:7px;transform:translate(-50%,-50%);background:rgba(255,245,225,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:#6a431b;border:0;border-radius:10px;padding:7px 10px;font:500 11px -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;box-shadow:0 4px 22px #00000030;cursor:pointer;white-space:nowrap}.light-indicator svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.light-indicator.off{color:#3c526c;background:rgba(229,238,249,.88)}.light-indicator .edge-arrow{font-size:13px}.light-indicator[hidden]{display:none!important}@media(max-width:620px){aside>.check:has(#light-enabled),aside>.check:has(#light-helper){display:none}.light-indicator{font-size:10px;padding:6px 8px}}

.quality-note{font-size:11px;color:#3d5068;margin:0 0 12px;font-weight:500}

/* Transparent glossy surfaces, with a single right-hand control panel. */
header,aside,.transport{
 background:linear-gradient(150deg,rgba(255,255,255,0.408) 0%,rgba(241,249,255,0.288) 38%,rgba(215,235,253,0.216) 100%);
 -webkit-backdrop-filter:blur(28px) saturate(180%);backdrop-filter:blur(28px) saturate(180%);
 box-shadow:inset 0 2px 6px rgba(255,255,255,0.324),inset 0 -8px 24px rgba(255,255,255,0.048),0 18px 50px rgba(0,8,20,0.132);
}
aside{left:auto;right:20px}
.viewtop .spatialmode,.viewbuttons button:not(.active),.viewbottom>span{
 background:linear-gradient(145deg,rgba(255,255,255,0.39),rgba(224,241,255,0.228));
 -webkit-backdrop-filter:blur(24px) saturate(180%);backdrop-filter:blur(24px) saturate(180%);
 box-shadow:inset 0 2px 5px rgba(255,255,255,0.27),0 5px 20px rgba(0,8,20,0.108);
}
.sidebarbutton,.open,#speed{background:rgba(255,255,255,0.192)}
.sidebarbutton:hover,.open:hover{background:rgba(255,255,255,0.348)}
.viewbottom{max-width:calc(100vw - 80px)}
@media(max-width:1100px){aside{left:auto;right:16px}}
@media(max-width:800px){.viewtop{left:20px;right:auto;transform:none;gap:8px}.spatialmode{display:none}}
@media(max-width:620px){
 aside{left:auto;right:12px;width:min(240px,calc(100vw - 74px));max-height:190px}
 .viewtop{left:12px;right:auto;top:79px;transform:none}
 .viewbottom{bottom:132px;max-width:calc(100vw - 24px)}
}

/* Apply the same surface transparency to secondary controls. */
.viewbuttons .orbit.active{background:linear-gradient(145deg,rgba(60,140,221,0.5175),rgba(21,88,168,0.56025))}
.light-indicator{background:rgba(255,245,225,0.528)}
.light-indicator.off{background:rgba(229,238,249,0.528)}
.modeactive{background:rgba(255,255,255,0.384)}
button.play{background:rgba(50,120,200,0.6)}

/* User-adjustable glass surfaces. Text keeps its full opacity. */
:root{--glass-strength:1;--glass-blur:28px;--glass-gloss:1}
header,aside,.transport{
 background:linear-gradient(150deg,rgba(255,255,255,calc(.408 * var(--glass-strength))),rgba(241,249,255,calc(.288 * var(--glass-strength))) 38%,rgba(215,235,253,calc(.216 * var(--glass-strength))));
 -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);
 box-shadow:inset 0 2px 6px rgba(255,255,255,calc(.324 * var(--glass-gloss))),inset 0 -8px 24px rgba(255,255,255,calc(.048 * var(--glass-gloss))),0 18px 50px rgba(0,8,20,.132);
}
.viewtop .spatialmode,.viewbuttons button:not(.active),.viewbottom>span{
 background:linear-gradient(145deg,rgba(255,255,255,calc(.39 * var(--glass-strength))),rgba(224,241,255,calc(.228 * var(--glass-strength))));
 -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(180%);backdrop-filter:blur(var(--glass-blur)) saturate(180%);
 box-shadow:inset 0 2px 5px rgba(255,255,255,calc(.27 * var(--glass-gloss))),0 5px 20px rgba(0,8,20,.108);
}
.sidebarbutton,.open,#speed{background:rgba(255,255,255,calc(.192 * var(--glass-strength)))}
.sidebarbutton:hover,.open:hover{background:rgba(255,255,255,calc(.348 * var(--glass-strength)))}
.viewbuttons .orbit.active{background:linear-gradient(145deg,rgba(60,140,221,calc(.5175 * var(--glass-strength))),rgba(21,88,168,calc(.56025 * var(--glass-strength))));box-shadow:inset 0 1px 4px rgba(255,255,255,calc(.4 * var(--glass-gloss)))}
.light-indicator{background:rgba(255,245,225,calc(.528 * var(--glass-strength)));-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur))}
.light-indicator.off{background:rgba(229,238,249,calc(.528 * var(--glass-strength)))}
.modeactive{background:rgba(255,255,255,calc(.384 * var(--glass-strength)))}
button.play{background:rgba(50,120,200,calc(.6 * var(--glass-strength)));box-shadow:inset 0 1px 4px rgba(255,255,255,calc(.4 * var(--glass-gloss)))}
.glass-settings{margin:18px 0 20px;font-size:12px;color:#102b49}
.glass-settings summary{cursor:pointer;font-weight:600;padding:4px 0}
.glass-sliders{display:grid;gap:6px;padding-top:12px}
.glass-sliders label{display:flex;justify-content:space-between;align-items:center;font-weight:500}
.glass-sliders output{font-variant-numeric:tabular-nums;font-size:11px}
.glass-sliders input{width:100%;height:18px;margin:0 0 6px;accent-color:#3278c8;cursor:pointer}
#glass-reset{justify-self:start;padding:5px 0;background:transparent;border:0;color:#174d84;font-size:11px;text-decoration:underline;text-underline-offset:3px}
@media(max-width:620px){aside:has(.glass-settings[open]){max-height:calc(100dvh - 220px)}.glass-settings{margin:12px 0}}

/* Chosen glass preset and more restrained corner rounding. */
:root{--glass-strength:2.0333333333;--glass-blur:7px;--glass-gloss:0}
header,aside,.transport{border-radius:10px}
.viewbuttons button,.open,.sidebarbutton,#speed,.light-indicator{border-radius:6px}
.viewbottom>span{border-radius:4px}
@media(max-width:620px){header,aside,.transport{border-radius:8px}}

.floor-settings{margin:17px 0 20px;font-size:12px;color:#102b49}
.floor-settings>label{font-weight:600;display:block;margin-bottom:9px}
.floor-color-row{display:flex;align-items:center;gap:10px}
#floor-color{width:48px;height:30px;padding:2px;border:0;border-radius:4px;background:rgba(255,255,255,.25);cursor:pointer}
#floor-color-value{font-size:11px;font-variant-numeric:tabular-nums}
.floor-presets{display:flex;gap:5px;flex-wrap:wrap;margin-top:9px}
.floor-presets button{font-size:10px;padding:5px 7px;border:0;border-radius:4px;background:rgba(255,255,255,.2);color:#173858}
.floor-presets button[aria-pressed="true"]{background:rgba(50,120,200,.25);color:#0b315a}
.floor-presets button:hover{background:rgba(255,255,255,.45)}

.room-settings{margin:18px 0 20px;font-size:11px;color:#102b49}
.room-color-row{display:flex;align-items:center;gap:7px;margin:14px 0 6px}
.room-color-row>span{flex:1;font-weight:500}
.room-color-row input[type=color]{width:30px;height:25px;padding:2px;border:0;border-radius:4px;background:rgba(255,255,255,.25);cursor:pointer}
.room-color-row output{font-size:9px;font-variant-numeric:tabular-nums}
.grid-strength-label{display:flex;justify-content:space-between;font-size:10px;margin-top:7px}
.grid-strength{width:100%;height:17px;margin:4px 0;accent-color:#3278c8;cursor:pointer}

.grid-toggle{display:flex;align-items:center;gap:7px;margin:9px 0;font-size:11px;cursor:pointer}.grid-toggle input{accent-color:#3278c8;width:14px;height:14px;margin:0}

#rxr-description{white-space:pre-line}
#rxr-description[hidden]{display:none}
@media(max-width:620px){aside>#rxr-description{display:block;font-size:11px;line-height:1.45}aside>#rxr-description[hidden]{display:none}}

/* Tint the floating glass surfaces. */
:root{--glass-rgb:255,255,255}
header,aside,.transport{background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.408 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.288 * var(--glass-strength))) 38%,rgba(var(--glass-rgb),calc(.216 * var(--glass-strength))))}
.viewbuttons button:not(.active),.viewbottom>span{background:linear-gradient(145deg,rgba(var(--glass-rgb),calc(.39 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.228 * var(--glass-strength))))}
.sidebarbutton,#speed{background:rgba(var(--glass-rgb),calc(.192 * var(--glass-strength)))}
.sidebarbutton:hover{background:rgba(var(--glass-rgb),calc(.348 * var(--glass-strength)))}
.glass-color-row{display:flex!important;align-items:center;gap:7px;margin-bottom:7px}
.glass-color-row>span{flex:1}
#glass-color{width:33px;height:27px;padding:2px;margin:0;border:0;border-radius:4px;background:rgba(255,255,255,.25);cursor:pointer}
#glass-color-value{font-size:9px;font-variant-numeric:tabular-nums}

/* Approved palette: hide color editing while retaining view controls. */
.floor-settings,.room-color-row,.glass-color-row{display:none!important}

/* Keep the approved appearance and hide appearance controls. */
.room-settings,.glass-settings,aside>.check:has(#grid){display:none!important}

/* Lighting stays active without a visible main-light switch. */
aside>.check:has(#light-enabled),#light-indicator{display:none!important}

/* A lesson description replaces the appearance and playback settings. */
aside [hidden]{display:none!important}
.recordxr-info{margin-top:23px;color:#243a56}
.recordxr-info h2{font-size:14px;line-height:1.3;font-weight:600;letter-spacing:-.15px;margin:22px 0 9px;color:#102b49}
.recordxr-info p{font-size:12px;line-height:1.65;margin:0 0 14px}
.info-links{display:grid;gap:9px;margin:20px 0 6px}
.info-links a{font-size:11px;font-weight:500;color:#205b96;text-decoration:none}
.info-links a:hover{text-decoration:underline;text-underline-offset:3px}
#mute.sound-button{width:36px;height:36px;display:flex;align-items:center;justify-content:center;padding:7px;border:0;border-radius:6px;background:transparent;color:#243a56}
#mute.sound-button:hover{background:rgba(255,255,255,.25)}
.sound-button svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.sound-button .sound-cross{display:none}
.sound-button.muted .sound-waves{display:none}
.sound-button.muted .sound-cross{display:block}
@media(max-width:620px){aside{max-height:calc(100dvh - 230px);width:min(245px,calc(100vw - 74px))}.recordxr-info h2{font-size:13px}.recordxr-info p{font-size:11px}}

/* Compact playback bar, 25 percent narrower on desktop. */
.transport{width:min(540px,calc(100vw - 80px))}
@media(max-width:1100px) and (min-width:801px){.transport{width:min(502.5px,calc(100vw - 60px))}}
@media(max-width:800px){.transport{width:calc(100vw - 40px)}}
@media(max-width:620px){.transport{width:auto}}

/* Academy recordings are loaded only after a deliberate lesson selection. */
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.lesson-picker{margin-left:auto;min-width:0}
#lesson-select{max-width:310px;min-width:220px;padding:9px 32px 9px 12px;border:0;border-radius:6px;background:rgba(255,255,255,.3);color:#18324d;font-size:12px;cursor:pointer}
#lesson-select:disabled{opacity:.65;cursor:progress}
#session-info[hidden],#layerstatus[hidden],#loading[hidden]{display:none!important}
.presenter a{color:#174d84;text-decoration:none;font-weight:600}.presenter a:hover{text-decoration:underline}
.presenter>span{display:block;font-size:10px;font-weight:400;line-height:1.5;margin-top:4px;color:#3d5068}
.avatar-nameplate{position:absolute;z-index:3;pointer-events:none;min-width:188px;max-width:220px;padding:10px 13px;background:rgba(255,255,255,.94);color:#122a43;border-radius:6px;box-shadow:0 4px 18px rgba(0,10,24,.13);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);text-align:left}
.avatar-nameplate strong{display:block;font:600 14px/1.3 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;letter-spacing:-.15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.avatar-nameplate span{display:block;margin-top:3px;font:400 11px/1.4 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#4b6178;white-space:nowrap}
.avatar-nameplate[hidden]{display:none!important}
@media(max-width:620px){#lesson-select{min-width:0;width:min(220px,calc(100vw - 90px));font-size:11px;padding:8px}.avatar-nameplate{min-width:155px;max-width:180px;padding:8px 10px}.avatar-nameplate strong{font-size:12px}.avatar-nameplate span{font-size:10px}}

.lesson-picker{position:relative}
#lesson-select[hidden]{display:none!important}
#lesson-menu-toggle{display:flex;align-items:center;gap:8px;padding:9px 11px;border:0;border-radius:6px;background:rgba(255,255,255,.32);color:#18324d;font-size:12px;font-weight:500}
#lesson-menu-toggle svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.lesson-count{font-size:10px;color:#4b6178}
.lesson-menu{position:absolute;right:0;top:calc(100% + 15px);width:270px;padding:10px;background:rgba(255,255,255,.98);border-radius:8px;box-shadow:0 12px 40px rgba(0,15,35,.16);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}
.lesson-menu[hidden]{display:none!important}
.lesson-menu-heading{padding:7px 10px 10px;color:#62738a;font-size:10px;font-weight:600;letter-spacing:.25px}
.lesson-menu>button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;border:0;border-radius:5px;padding:11px 10px;background:transparent;color:#18324d;text-align:left;font-size:12px}
.lesson-menu>button small{font-size:10px;color:#687a91;font-variant-numeric:tabular-nums}
.lesson-menu>button:hover,.lesson-menu>button.selected{background:#eaf2fc}
@media(max-width:620px){.lesson-menu{width:min(270px,calc(100vw - 30px))}#lesson-menu-toggle{font-size:11px;padding:8px}}

/* All Academy lessons stay visible along the left edge. */
.lesson-library{position:fixed;z-index:5;left:20px;right:auto;top:103px;bottom:auto;width:225px;max-height:calc(100dvh - 250px);overflow:auto;padding:10px;background:rgba(255,255,255,.86);border-radius:8px;box-shadow:0 9px 30px rgba(0,15,35,.1);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px)}
.lesson-library>button{line-height:1.4;padding:13px 10px}
.lesson-library>button:disabled{opacity:.5;cursor:progress}
.info-links a,.presenter a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
@media(max-width:1100px){.lesson-library{left:16px;width:202px}}
@media(max-width:800px){.lesson-library{top:140px;left:16px;width:190px}.lesson-library>button{padding:10px 7px;font-size:11px}}
@media(max-width:620px){.lesson-library{left:12px;top:79px;width:140px;max-height:calc(100dvh - 225px);padding:7px}.lesson-library>button{padding:9px 5px;font-size:10px;gap:5px}.lesson-library>button small{font-size:9px}.lesson-library .lesson-menu-heading{font-size:9px;padding:5px 5px 8px}aside{width:min(200px,calc(100vw - 176px));top:79px}.viewtop{top:auto;bottom:130px;left:50%;transform:translateX(-50%)}.viewbuttons{flex-direction:row}}

/* A spatial glass play control invites the first deliberate load. */
.spatial-play{position:absolute;z-index:4;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:13px;background:transparent;border:0;padding:16px;color:#173858;cursor:pointer}
.play-orb{display:flex;align-items:center;justify-content:center;width:88px;height:88px;border-radius:50%;background:rgba(255,255,255,.7);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);box-shadow:inset 0 2px 5px rgba(255,255,255,.8),0 10px 40px rgba(0,25,60,.16);transition:transform .2s ease,background .2s ease}
.play-orb svg{width:34px;height:34px;fill:currentColor;transform:translateX(3px)}
.spatial-play-label{font-size:12px;font-weight:500;letter-spacing:.1px;color:#173858;background:rgba(255,255,255,.6);padding:5px 10px;border-radius:5px;backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px)}
.spatial-play:hover .play-orb{transform:translateY(-3px) scale(1.04);background:rgba(255,255,255,.88)}
.spatial-play:disabled{opacity:.5;cursor:progress}
.spatial-play[hidden]{display:none!important}
@media(prefers-reduced-motion:reduce){.play-orb{transition:none}}

/* One legible spatial play control with a shared visual baseline. */
.spatial-play{width:184px;min-height:68px;flex-direction:row;justify-content:center;gap:12px;padding:12px 18px;border-radius:14px;background:linear-gradient(145deg,rgba(25,57,91,.94),rgba(8,28,51,.92));color:#fff;backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);box-shadow:inset 0 1px 2px rgba(255,255,255,.24),0 12px 38px rgba(0,20,45,.24);transition:box-shadow .18s ease,background .18s ease}
.play-orb{width:38px;height:38px;flex-shrink:0;border-radius:50%;background:rgba(255,255,255,.12);box-shadow:inset 0 1px 2px rgba(255,255,255,.16);backdrop-filter:none;-webkit-backdrop-filter:none}
.play-orb svg{width:23px;height:23px;transform:translateX(2px);fill:#fff}
.spatial-play-label{padding:0;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;font-size:14px;line-height:1.2;font-weight:600;letter-spacing:.1px;color:#fff}
.spatial-play:hover{background:linear-gradient(145deg,rgba(35,73,111,.98),rgba(12,36,64,.96));box-shadow:inset 0 1px 2px rgba(255,255,255,.32),0 15px 42px rgba(0,20,45,.3)}
.spatial-play:hover .play-orb{transform:none;background:rgba(255,255,255,.18)}
.spatial-play:active{box-shadow:inset 0 2px 5px rgba(0,0,0,.14),0 5px 20px rgba(0,20,45,.2)}
button.play{display:flex;align-items:center;justify-content:center;padding:10px;color:#fff}
button.play svg{display:block;width:23px;height:23px;fill:currentColor}
@media(prefers-reduced-motion:reduce){.spatial-play{transition:none}}

/* Readable system typography with a clearer hierarchy. */
body{font-family:-apple-system,BlinkMacSystemFont,'SF Pro Text','Segoe UI',sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
header .brand{font-size:19px;font-weight:600;letter-spacing:-.4px}
header nav{font-size:14px}
aside{width:280px;padding:24px}
aside>.eyebrow{font-size:12px;line-height:1.5;font-weight:500;letter-spacing:.15px}
h1{font-size:32px;line-height:1.14;letter-spacing:-.8px;font-weight:600;margin:14px 0 17px}
aside>.description,#rxr-description{font-size:14px;line-height:1.65;color:#243a50;margin-bottom:21px}
.presenter{font-size:14px;line-height:1.5;margin-bottom:20px}
.presenter a{font-size:14px;line-height:1.5;font-weight:600;color:#184976}
.presenter>span{font-size:12px;line-height:1.6;color:#52677d;margin-top:5px}
.sessioninfo{font-size:13px;line-height:1.6;gap:5px;color:#425b73}
.recordxr-info h2{font-size:17px;line-height:1.35;font-weight:600;letter-spacing:-.25px;margin:25px 0 11px}
.recordxr-info p{font-size:14px;line-height:1.65;color:#2d4359;margin-bottom:17px}
.info-links{gap:13px;margin-top:24px}
.info-links a{font-size:13px;line-height:1.5;font-weight:500}
.lesson-library{width:240px;padding:12px}
.lesson-menu-heading{font-size:12px;line-height:1.5;font-weight:600;padding:8px 10px 12px;letter-spacing:0;color:#52677d}
.lesson-library>button{font-size:14px;line-height:1.4;font-weight:500;min-height:48px;padding:12px 10px}
.lesson-library>button small{font-size:12px;font-weight:400;color:#52677d}
.viewbuttons button{font-size:13px;font-weight:500}
.time{font-size:14px;line-height:1.4}
.playgroup>button:not(.play){font-size:13px}
@media(max-width:1100px){aside{width:245px;padding:21px}.lesson-library{width:210px}.lesson-library>button{font-size:13px}.lesson-library>button small{font-size:11px}h1{font-size:30px}}
@media(max-width:800px){aside{width:225px;padding:18px}.lesson-library{width:185px}aside>.description,#rxr-description,.recordxr-info p{font-size:13px}.presenter a{font-size:13px}.recordxr-info h2{font-size:16px}}
@media(max-width:620px){.lesson-library{width:145px;top:79px;max-height:230px;padding:8px}.lesson-library>button{font-size:11px;min-height:37px;padding:8px 5px}.lesson-library>button small{font-size:10px}.lesson-menu-heading{font-size:10px;padding:5px}aside{top:auto;bottom:132px;right:12px;left:12px;width:auto;max-height:190px;padding:17px 19px}h1{font-size:27px}.viewtop{top:79px;bottom:auto;right:12px;left:auto;transform:none}.viewbuttons{flex-direction:column}}

.loading-progress{display:flex;align-items:center;gap:13px;margin-top:8px;width:min(360px,70vw)}
#load-progress{appearance:none;-webkit-appearance:none;width:100%;height:6px;border:0;border-radius:4px;overflow:hidden;background:rgba(255,255,255,.3);accent-color:#215d9a}
#load-progress::-webkit-progress-bar{background:rgba(255,255,255,.3);border-radius:4px}
#load-progress::-webkit-progress-value{background:#215d9a;border-radius:4px;transition:width .12s linear}
#load-progress::-moz-progress-bar{background:#215d9a;border-radius:4px}
#load-percent{flex-shrink:0;min-width:40px;font-size:12px;font-weight:500;font-variant-numeric:tabular-nums;color:#183858}
.autoplay-hint{position:fixed;z-index:7;left:50%;bottom:130px;transform:translateX(-50%);font-size:12px;line-height:1.5;color:#173858;background:rgba(255,255,255,.84);padding:7px 12px;border-radius:5px;white-space:nowrap;box-shadow:0 3px 12px rgba(0,20,50,.08)}
.autoplay-hint[hidden]{display:none!important}

/* Separate floating cards for the lesson and the spatial experience. */
aside.lesson-sidebar{top:103px;bottom:20px;max-height:none;left:auto;right:20px;width:280px;padding:0;display:flex;flex-direction:column;gap:14px;overflow:visible;background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
.lesson-card,.info-card{padding:20px;border:0;border-radius:8px;background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.408 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.288 * var(--glass-strength))) 38%,rgba(var(--glass-rgb),calc(.216 * var(--glass-strength))));-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(145%);backdrop-filter:blur(var(--glass-blur)) saturate(145%);box-shadow:0 9px 30px rgba(0,15,35,.10);scrollbar-width:thin;scrollbar-color:#6f8aa340 transparent}
.lesson-card{flex:0 1 auto;max-height:54%;min-height:190px;overflow:auto}
.lesson-card>.eyebrow{font-size:11px;line-height:1.5;letter-spacing:.15px}
.lesson-card h1{font-size:29px;line-height:1.15;letter-spacing:-.7px;margin:10px 0 12px}
.lesson-card #rxr-description{font-size:13.5px;line-height:1.6;margin:0 0 14px}
.lesson-card .presenter{margin:0 0 12px;font-size:13px;line-height:1.5}
.lesson-card .presenter a{font-size:13px}
.lesson-card .presenter>span{font-size:11px;margin-top:4px}
.lesson-card .sessioninfo{flex-direction:row;flex-wrap:wrap;gap:4px 14px;font-size:12px;line-height:1.5}
.lesson-card .sessioninfo>span{white-space:nowrap}
.info-card.recordxr-info{margin:0;flex:1 1 auto;min-height:0;overflow:auto;color:#243a50}
.info-card.recordxr-info h2{font-size:15px;line-height:1.35;letter-spacing:-.15px;margin:0 0 8px}
.info-card.recordxr-info p{font-size:13px;line-height:1.55;margin:0 0 14px}
.info-card h3{font-size:21px;font-weight:600;line-height:1.2;letter-spacing:-.45px;margin:17px 0 6px;color:#102b49}
.info-card.recordxr-info .spatial-intro{margin-bottom:12px}
.spatial-option{margin:0 0 14px}
.spatial-option strong{display:block;font-size:13px;font-weight:600;line-height:1.45;color:#173858}
.spatial-links{display:flex;flex-wrap:wrap;gap:3px 13px;margin-top:4px}
.spatial-links a,.info-card .info-links a{font-size:12px;line-height:1.5;font-weight:500;color:#205b96;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.spatial-links a:hover,.info-card .info-links a:hover{color:#0b4079}
.info-card .info-links{display:flex;flex-wrap:wrap;gap:5px 13px;margin:16px 0 0}
@media(max-width:1100px){aside.lesson-sidebar{right:16px;width:245px}.lesson-card,.info-card{padding:17px}.lesson-card h1{font-size:27px}}
@media(max-width:800px){aside.lesson-sidebar{width:225px;top:140px;bottom:16px}.lesson-card,.info-card{padding:15px}.lesson-card{max-height:50%}.lesson-card h1{font-size:25px}.lesson-card #rxr-description{font-size:13px}}
@media(max-width:620px){aside.lesson-sidebar{left:12px;right:12px;top:auto;bottom:132px;width:auto;max-height:33dvh;display:block;overflow:auto;border-radius:8px}.lesson-card{max-height:none;min-height:0;margin-bottom:12px}.info-card.recordxr-info{overflow:visible}.lesson-card h1{font-size:25px}.info-card h3{font-size:20px}}

.info-card.recordxr-info{background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.44 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.34 * var(--glass-strength))))}
.info-card .spatial-links a,.info-card .info-links a{color:#123b66}
.lesson-card{flex:0 0 auto}
.info-card.recordxr-info{padding:17px 20px}
.info-card.recordxr-info p{margin-bottom:10px}
.info-card h3{margin-top:12px}
.info-card .spatial-option{margin-bottom:10px}
.info-card .info-links{margin-top:12px}
@media(max-width:1100px){.info-card.recordxr-info{padding:15px 17px}}
@media(max-width:800px){.info-card.recordxr-info{padding:14px 15px}}

/* Lesson information above the full-screen scene; illustrated products at right. */
header{left:20px;right:auto;top:20px;width:240px;height:60px;padding:0 14px;gap:0}
header nav{display:none}
header .brand{font-size:17px;letter-spacing:-.4px;gap:9px}
header .brand svg{width:32px;height:32px}
.lesson-overview{position:fixed;z-index:5;left:280px;right:320px;top:20px;padding:15px 18px;border:0;border-radius:8px;background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.44 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.34 * var(--glass-strength))));-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));box-shadow:0 9px 30px rgba(0,15,35,.10);max-height:190px;overflow:auto;scrollbar-width:thin}
.lesson-headline{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:6px}
.lesson-headline h1{font-size:23px;line-height:1.2;letter-spacing:-.45px;margin:0;font-weight:600}
.lesson-headline .eyebrow{font-size:10px;line-height:1.4;letter-spacing:.1px;white-space:nowrap}
.lesson-overview #rxr-description{font-size:13px;line-height:1.5;color:#243a50;margin:0 0 9px}
.lesson-meta{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 18px}
.lesson-meta .presenter{margin:0;font-size:11px;line-height:1.5}
.lesson-meta .presenter a{font-size:11px;font-weight:600}
.lesson-meta .presenter>span{display:none}
.lesson-meta .sessioninfo{flex-direction:row;flex-wrap:wrap;gap:12px;font-size:11px;line-height:1.5}
.lesson-meta .sessioninfo>span{white-space:nowrap}
aside.promotion-sidebar{top:20px;bottom:20px;left:auto;right:20px;width:280px;max-height:none;padding:0;display:block;overflow:auto;border:0;border-radius:8px;background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.46 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.37 * var(--glass-strength))));-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));box-shadow:0 9px 30px rgba(0,15,35,.10);scrollbar-width:thin}
.promotion-intro{padding:20px 19px 17px}
.promotion-intro>.eyebrow,.promo-copy>.eyebrow{font-size:10px;font-weight:600;letter-spacing:.9px;color:#47617b}
.promotion-intro h2{font-size:27px;line-height:1.1;letter-spacing:-.65px;color:#102b49;margin:9px 0 12px;font-weight:600}
.promotion-intro p,.promo-copy p,.promotion-footer p{font-size:13px;line-height:1.55;color:#243a50;margin:0}
.product-promo{margin:0 0 9px}
.promo-image{display:block;line-height:0;overflow:hidden}
.promo-image img{display:block;width:100%;height:auto;aspect-ratio:2.15;object-fit:cover;transition:transform .2s ease}
.promo-image:hover img{transform:scale(1.025)}
.promo-copy{padding:15px 19px 17px}
.promo-copy h3,.promotion-footer h3{font-size:20px;line-height:1.2;letter-spacing:-.4px;font-weight:600;color:#102b49;margin:6px 0 9px}
.promo-links{display:flex;flex-wrap:wrap;gap:5px 14px;margin-top:12px}
.promo-links a,.promotion-footer>a{font-size:12px;font-weight:500;line-height:1.5;color:#123b66;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.promo-links a:hover,.promotion-footer>a:hover{color:#09528c}
.promotion-footer{padding:10px 19px 22px}
.promotion-footer>p{margin-bottom:11px}
.promotion-footer .recordxr-note{font-size:12px;margin:23px 0 10px;color:#3b5269}
.viewtop{top:auto;bottom:130px;left:50%;right:auto;transform:translateX(-50%)}
@media(max-width:1100px){header{left:16px;width:210px}.lesson-overview{left:246px;right:277px;padding:13px 15px}.lesson-headline h1{font-size:21px}.lesson-headline{flex-wrap:wrap;gap:3px 12px}.lesson-overview #rxr-description{font-size:12px}aside.promotion-sidebar{right:16px;width:245px}.promotion-intro,.promo-copy,.promotion-footer{padding-left:17px;padding-right:17px}}
@media(max-width:800px){header{width:185px;height:60px}.brand{gap:6px}.lesson-overview{left:221px;right:257px;padding:12px;top:20px}.lesson-headline h1{font-size:19px}.lesson-meta{gap:3px}.lesson-meta .sessioninfo{font-size:10px}.lesson-headline .eyebrow{display:none}aside.promotion-sidebar{width:225px;top:20px;bottom:16px}.promotion-intro h2{font-size:25px}.viewbuttons{flex-direction:row}}
@media(max-width:620px){header{left:12px;top:12px;width:145px;height:54px;padding:0 9px}.brand{font-size:12px!important;gap:5px!important}.brand svg{width:24px!important;height:24px!important}.lesson-overview{top:12px;left:169px;right:12px;max-height:180px;padding:12px}.lesson-headline h1{font-size:19px}.lesson-overview #rxr-description{font-size:12px}.lesson-meta .presenter{font-size:10px}.lesson-meta .presenter a{font-size:10px}aside.promotion-sidebar{top:auto;bottom:132px;left:12px;right:12px;width:auto;max-height:25dvh}.promotion-intro{padding:16px}.promotion-intro h2{font-size:23px}.product-promo{display:grid;grid-template-columns:38% 1fr;align-items:start}.promo-image img{aspect-ratio:1;object-fit:cover}.promo-copy{padding:0 14px 18px}.promo-copy h3{font-size:18px}.promo-copy p{font-size:12px}.viewtop{bottom:calc(25dvh + 147px);top:auto;left:50%;right:auto}.viewbuttons{flex-direction:row}}
@media(prefers-reduced-motion:reduce){.promo-image img{transition:none}}
.autoplay-hint{bottom:178px}
@media(max-width:620px){.autoplay-hint{bottom:calc(25dvh + 196px);max-width:calc(100vw - 24px);white-space:normal;text-align:center}}

/* View controls live with playback and sound. */
.transport-actions{gap:6px}
.transport-views{display:flex;align-items:center;gap:5px;flex-direction:row}
.transport-views button{display:flex;align-items:center;justify-content:center;gap:6px;min-width:34px;height:34px;padding:7px;border:0;border-radius:6px;font-size:12px;background:transparent!important;box-shadow:none!important;-webkit-backdrop-filter:none;backdrop-filter:none;color:#243a56}
.transport-views button:hover{background:rgba(255,255,255,.35)!important}
.transport-views .orbit.active{background:rgba(40,105,174,.16)!important;color:#174f88}
.transport-views svg{display:block;width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.transport-views .orbit-label{display:none}
.autoplay-hint{bottom:130px}
@media(max-width:620px){.transport-actions{gap:2px}.transport-views{gap:2px}.transport-views button{min-width:30px;width:30px;height:32px;padding:6px}.playgroup{gap:8px}.autoplay-hint{bottom:130px}}

/* Retain the familiar view symbols and labels in the playback bar. */
.transport-views .orbit-label{display:inline}
.transport-views button{padding:7px 9px;width:auto;font-size:12px;white-space:nowrap}
.transport-views .orbit.active{background:linear-gradient(145deg,#3c8cdddc,#1558a8ee)!important;color:#fff}
.transport-views #full{font-size:17px;min-width:34px;padding:5px 8px}
@media(max-width:620px){.transport-views .orbit-label{display:none}.transport-views button{font-size:11px;min-width:29px;padding:5px}.transport-views #reset{font-size:10px}.transport-actions{gap:1px}.transport-views{gap:1px}}

/* Centered lesson navigation and readable text at normal viewing distance. */
.lesson-library{top:50%;transform:translateY(-50%);max-height:calc(100dvh - 210px)}
.lesson-menu-heading{font-size:13px;line-height:1.5;padding:8px 10px 13px}
.lesson-library>button{font-size:16px;line-height:1.4;min-height:52px;padding:13px 10px}
.lesson-library>button small{font-size:13px}
.lesson-headline h1{font-size:26px;line-height:1.2;letter-spacing:-.5px}
.lesson-overview #rxr-description{font-size:15px;line-height:1.55}
.lesson-headline .eyebrow{font-size:11px}
.lesson-meta .presenter,.lesson-meta .presenter a,.lesson-meta .sessioninfo{font-size:12px;line-height:1.5}
.promotion-intro h2{font-size:27px;line-height:1.15;letter-spacing:-.5px}
.promotion-intro p,.promo-copy p,.promotion-footer p{font-size:15px;line-height:1.55}
.promotion-intro>.eyebrow,.promo-copy>.eyebrow{font-size:11px;letter-spacing:.7px}
.promo-copy h3,.promotion-footer h3{font-size:21px;line-height:1.25}
.promo-links a,.promotion-footer>a{font-size:14px;line-height:1.5}
.promotion-footer .recordxr-note{font-size:14px;line-height:1.55;margin-top:21px}
.fixed-views{display:flex;justify-content:center;gap:5px;padding:0 0 14px}
.fixed-views button{border:0;border-radius:5px;padding:6px 14px;background:rgba(255,255,255,.23);color:#233f5d;font:500 13px/1.35 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;cursor:pointer}
.fixed-views button:hover{background:rgba(255,255,255,.45)}
.fixed-views button[aria-pressed=true]{background:rgba(27,91,159,.17);color:#154e87}
.fixed-views button:disabled{opacity:.4;cursor:wait}
.autoplay-hint{bottom:175px}
@media(max-width:1100px){.lesson-library>button{font-size:14px;padding:12px 8px}.lesson-library>button small{font-size:12px}.lesson-headline h1{font-size:23px}.lesson-overview #rxr-description{font-size:14px}.promotion-intro p,.promo-copy p,.promotion-footer p{font-size:14px}}
@media(max-width:800px){.lesson-library>button{font-size:13px}.lesson-library>button small{font-size:11px}.lesson-headline h1{font-size:21px}.lesson-overview #rxr-description{font-size:13px}.lesson-meta .presenter,.lesson-meta .presenter a,.lesson-meta .sessioninfo{font-size:11px}}
@media(max-width:620px){.lesson-library{top:50%;transform:translateY(-50%);max-height:calc(100dvh - 250px)}.lesson-library>button{font-size:12px;min-height:43px;padding:9px 5px}.lesson-library>button small{font-size:10px}.lesson-menu-heading{font-size:11px}.lesson-headline h1{font-size:20px}.lesson-overview #rxr-description{font-size:13px}.fixed-views{padding-bottom:11px}.fixed-views button{font-size:12px;padding:5px 11px}.autoplay-hint{bottom:170px}}

/* Hardware types remain recognizable together, with concise descriptions. */
.hardware-intro{padding:19px 18px 8px}
.hardware-intro>.eyebrow{font-size:11px;font-weight:600;line-height:1.4;letter-spacing:.8px;color:#47617b}
.hardware-intro h2{font-size:27px;line-height:1.15;letter-spacing:-.6px;color:#102b49;font-weight:600;margin:8px 0 0}
.hardware-option{display:grid;grid-template-columns:96px minmax(0,1fr);column-gap:13px;align-items:center;padding:15px 18px 17px}
.hardware-image{display:flex;align-items:center;justify-content:center;height:76px;overflow:hidden;border-radius:5px;background:rgba(255,255,255,.8)}
.hardware-image img{display:block;width:100%;height:100%;object-fit:contain}
.hardware-touch .hardware-image img{object-fit:cover;object-position:50% 65%}
.hardware-heading h3{font-size:19px;line-height:1.2;letter-spacing:-.3px;font-weight:600;color:#102b49;margin:0 0 5px}
.hardware-heading>span{font-size:12px;line-height:1.4;display:block;color:#3b5269}
.hardware-option>p{grid-column:1/-1;font-size:15px;line-height:1.5;color:#243a50;margin:10px 0 8px}
.hardware-link,.hardware-footer>a{font-size:13px;font-weight:500;line-height:1.5;color:#123b66;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.hardware-link{grid-column:1/-1;justify-self:start}
.hardware-link:hover,.hardware-footer>a:hover{color:#09528c}
.hardware-footer{padding:10px 18px 22px;display:flex;flex-wrap:wrap;gap:7px 15px}
.hardware-footer>p{font-size:14px;line-height:1.5;color:#3b5269;margin:13px 0 0}
@media(max-width:1100px){.hardware-option{grid-template-columns:80px minmax(0,1fr);gap:0 11px;padding:13px 16px 15px}.hardware-heading h3{font-size:18px}.hardware-option>p{font-size:14px}.hardware-intro h2{font-size:25px}}
@media(max-width:620px){.hardware-option{grid-template-columns:92px 1fr;padding:13px 16px}.hardware-heading h3{font-size:19px}.hardware-option>p{font-size:14px}.hardware-intro h2{font-size:24px}}

/* One shared material, matching the bottom player. Text stays opaque. */
:root{--ui-glass-background:linear-gradient(150deg,rgba(var(--glass-rgb),calc(.408 * var(--glass-strength))),rgba(var(--glass-rgb),calc(.288 * var(--glass-strength))) 38%,rgba(var(--glass-rgb),calc(.216 * var(--glass-strength))));--ui-glass-filter:blur(var(--glass-blur)) saturate(180%);--ui-glass-shadow:inset 0 2px 6px rgba(255,255,255,calc(.324 * var(--glass-gloss))),inset 0 -8px 24px rgba(255,255,255,calc(.048 * var(--glass-gloss))),0 18px 50px rgba(0,8,20,.132)}
header,.lesson-library,.lesson-overview,aside.promotion-sidebar,.transport,.autoplay-hint,.loader{background:var(--ui-glass-background);-webkit-backdrop-filter:var(--ui-glass-filter);backdrop-filter:var(--ui-glass-filter);box-shadow:var(--ui-glass-shadow);border:0}
.hardware-image{background:transparent}
.software-option,.setup-option{margin-top:26px;padding-top:20px}
.software-option .hardware-image img,.setup-option .hardware-image img{object-fit:cover;object-position:center}
.hardware-option>p,.hardware-footer>p,.lesson-overview #rxr-description{color:#14263a}
.hardware-link,.hardware-footer>a{color:#0a3158}
.hardware-heading>span,.lesson-headline .eyebrow,.hardware-intro>.eyebrow{color:#263e57}
.fixed-views button{background:transparent}
.fixed-views button:hover{background:rgba(255,255,255,.15)}
/* The audio hint sits beneath the player, leaving anatomical details visible. */
.autoplay-hint{bottom:1px;margin:0;padding:2px 8px;font-size:11px;line-height:1.4}
@media(min-width:621px){aside.promotion-sidebar.hardware-promotion{bottom:auto;height:auto;max-height:calc(100dvh - 40px)}}

/* Lesson navigation at top left; recording information above playback. */
.lesson-library{top:20px;transform:none;max-height:calc(100dvh - 180px)}
.lesson-overview{top:auto;bottom:var(--player-dock-clearance,132px);left:50%;right:auto;width:min(680px,calc(100vw - 640px));transform:translateX(-50%);max-height:200px}
@media(max-width:1100px){.lesson-library{top:20px}.lesson-overview{width:calc(100vw - 550px);padding:13px 15px}}
@media(max-width:800px){.lesson-overview{width:calc(100vw - 490px);padding:12px;max-height:180px}.lesson-library{top:20px}}
@media(max-width:620px){.lesson-library{top:12px;max-height:calc(100dvh - 300px)}.lesson-overview{top:auto;bottom:var(--player-dock-clearance,132px);left:12px;right:12px;width:auto;transform:none;max-height:150px}.promotion-sidebar.hardware-promotion{top:12px;bottom:auto;left:auto;right:12px;width:calc(100vw - 180px);max-height:calc(100dvh - 310px)}}

/* Compact navigation leaves the 3D scene usable on tablets and phones. */
.panel-controls{display:none}
.time{white-space:nowrap}
.playgroup>button{flex-shrink:0}
#back{white-space:nowrap}
.panel-toggle{background:var(--ui-glass-background);-webkit-backdrop-filter:var(--ui-glass-filter);backdrop-filter:var(--ui-glass-filter);box-shadow:var(--ui-glass-shadow);border:0;border-radius:8px;color:#14263a;font:600 14px/1.3 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;padding:11px 15px;min-height:44px;pointer-events:auto}
@media(max-width:1023px){
 .panel-controls{display:flex;position:fixed;z-index:9;left:12px;right:12px;top:12px;justify-content:space-between;gap:12px;pointer-events:none}
 .lesson-library,aside.promotion-sidebar.hardware-promotion{display:none;top:68px;bottom:auto;transform:none;width:min(300px,calc(100vw - 24px));max-height:max(140px,calc(var(--scene-free-bottom,500px) - 80px));overflow:auto}
 .lesson-library{left:12px;right:auto;padding:12px}
 aside.promotion-sidebar.hardware-promotion{left:auto;right:12px}
 body.lessons-open .lesson-library{display:block}
 body.hardware-open aside.promotion-sidebar.hardware-promotion{display:block}
 .lesson-library>button{font-size:15px;min-height:46px;padding:11px 10px}
 .lesson-library>button small{font-size:12px}
 .lesson-menu-heading{font-size:12px}
 .lesson-overview{left:50%;right:auto;width:min(600px,calc(100vw - 32px));transform:translateX(-50%);top:auto;bottom:var(--player-dock-clearance,132px);max-height:180px;padding:14px 16px}
 .lesson-overview #rxr-description:not([hidden]){display:block;font-size:14px;line-height:1.5;margin:8px 0 10px}
 .lesson-meta .sessioninfo{display:flex;font-size:11px;gap:12px}
 .lesson-meta .presenter,.lesson-meta .presenter a{font-size:12px}
 .lesson-headline h1{font-size:23px}
 .hardware-heading h3{font-size:19px}
 .hardware-option>p{font-size:15px}
 .hardware-option{grid-template-columns:96px minmax(0,1fr);padding:15px 18px 17px}
}
@media(max-width:620px){
 .lesson-overview{left:12px;right:12px;width:auto;transform:none;padding:13px 14px;max-height:175px}
 .lesson-headline h1{font-size:21px;line-height:1.2}
 .lesson-headline .eyebrow{display:none}
 .lesson-meta{gap:4px 12px}
 .lesson-meta .presenter,.lesson-meta .presenter a{font-size:11.5px}
 .lesson-meta .sessioninfo{font-size:11px;line-height:1.5}
 .transport{width:calc(100vw - 24px);padding:14px 14px 12px;bottom:22px}
 .playbar{flex-wrap:wrap;gap:9px 12px;padding-top:12px}
 .playgroup{gap:9px;flex-shrink:0}
 .time{font-size:12px;line-height:1.3;white-space:nowrap}
 button.play{width:42px;height:42px;padding:9px}
 .transport-views{gap:3px}
 .transport-views button,.transport-views #full{min-width:40px;width:40px;height:42px;padding:8px}
 .transport-views .orbit-label,.reset-label{display:none}
 .transport-views #reset{font-size:17px}
 #mute.sound-button{width:40px;height:42px}
 .transport-actions{gap:3px;margin-left:auto}
 #back{font-size:12px;min-width:32px;white-space:nowrap}
 .autoplay-hint{bottom:2px;max-width:calc(100vw - 24px);white-space:normal;line-height:1.3;text-align:center}
}
.autoplay-hint{width:max-content;max-width:calc(100vw - 24px)}

/* Give the compact entry buttons a clear action and a useful preview. */
.panel-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;width:190px;max-width:calc((100vw - 36px)/2);padding:10px 12px;min-height:64px}
.panel-toggle-main{display:flex;align-items:center;justify-content:center;gap:7px;white-space:nowrap}
.panel-toggle-main svg{width:18px;height:18px;flex-shrink:0;fill:none;stroke:#205b96;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.panel-toggle-main strong{font-size:14px;line-height:1.25;font-weight:600;letter-spacing:-.1px}
.panel-toggle-caption{font-size:11px;line-height:1.35;font-weight:400;color:#3b5269;white-space:nowrap}
.panel-toggle:hover,.panel-toggle[aria-expanded=true]{color:#124978}
.panel-toggle:focus-visible{outline:2px solid #3278c8;outline-offset:3px}
.lesson-info-toggle{display:none;border:0;border-radius:5px;background:transparent;color:#164b7e;padding:6px 8px;font:500 12px/1.3 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;text-decoration:underline;text-underline-offset:3px;cursor:pointer}
@media(max-width:1023px){.lesson-library,aside.promotion-sidebar.hardware-promotion{top:84px;max-height:max(140px,calc(var(--scene-free-bottom,500px) - 96px))}}
@media(max-width:380px){.panel-toggle{padding:9px 8px}.panel-toggle-main{gap:6px}.panel-toggle-main strong{font-size:13px}.panel-toggle-main svg{width:16px;height:16px}.panel-toggle-caption{font-size:10.5px}}
@media(max-width:1023px) and (max-height:600px){
 .panel-toggle{min-height:50px;padding-top:6px;padding-bottom:6px}
 .panel-toggle-caption{font-size:10px}
 .lesson-library,aside.promotion-sidebar.hardware-promotion{top:70px;max-height:max(110px,calc(var(--scene-free-bottom,400px) - 82px))}
 .lesson-info-toggle{display:block;flex-shrink:0}
 .lesson-overview{padding:10px 14px;max-height:155px}
 .lesson-headline{flex-wrap:nowrap;align-items:center;margin:0}
 .lesson-headline h1{font-size:20px}
 body:not(.lesson-details-open) .lesson-overview #rxr-description,body:not(.lesson-details-open) .lesson-meta{display:none}
}

.lesson-library>button small{flex-shrink:0;text-align:right;white-space:nowrap}
.lesson-download-size{display:block;margin-top:3px;font-size:11px;line-height:1.3;color:#43596d}

body.external-hardware #hardware-panel,body.external-hardware #hardware-toggle{display:none!important}

/* Compact lesson description in the upper right corner. */
body.external-hardware .lesson-overview{top:20px;right:20px;bottom:auto;left:auto;transform:none;width:300px;max-height:180px;padding:13px 16px}
body.external-hardware .lesson-overview .lesson-headline h1{font-size:19px;line-height:1.18}
body.external-hardware .lesson-overview #rxr-description:not([hidden]){font-size:14px;line-height:1.4;margin:7px 0}
body.external-hardware .lesson-overview .lesson-meta{font-size:11px;line-height:1.4}
@media(max-width:1023px){body.external-hardware .lesson-overview{top:14px;right:14px;width:min(290px,calc(100vw - 160px));max-height:160px;padding:11px 13px}}
@media(max-width:620px){body.external-hardware .lesson-overview{top:12px;right:12px;width:calc(100vw - 140px);max-height:148px;padding:10px 12px}body.external-hardware .lesson-overview .lesson-headline h1{font-size:17px}body.external-hardware .lesson-overview #rxr-description:not([hidden]){font-size:13px}body.external-hardware .lesson-overview .lesson-meta{font-size:10px}}


/* Keep lesson names and cache labels within the sidebar at every width. */
#lesson-menu.lesson-library{overflow-x:hidden;overflow-y:auto;overscroll-behavior-x:none}
#lesson-menu>button{display:grid;grid-template-columns:minmax(0,1fr);width:100%;min-width:0;max-width:100%;gap:5px;text-align:left}
#lesson-menu>button>span{min-width:0;white-space:normal;overflow-wrap:break-word}
#lesson-menu>button small{display:flex;justify-content:space-between;align-items:baseline;gap:10px;min-width:0;width:100%;max-width:100%;white-space:normal;text-align:left}
#lesson-menu .lesson-download-size{flex:1 1 auto;min-width:0;max-width:100%;margin-top:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:right}
.browser-quality-note{margin:13px 10px 5px;padding-top:14px;border-top:1px solid rgba(44,67,92,.15);font-size:12px;line-height:1.55;color:#364e66;overflow-wrap:break-word}

.browser-quality-note{margin:0 10px 12px;padding:0 0 9px;border:0;font-size:12px;line-height:1.5}

/* Readable lesson heading and browser quality note. */
#lesson-menu.lesson-library>.lesson-menu-heading{font-size:18px;line-height:1.35;font-weight:600}
#lesson-menu.lesson-library>.browser-quality-note{font-size:15px;line-height:1.5}

/* Decorative frozen scene behind the Academy launch cover. */
body.is-orbit-poster>*:not(main){display:none!important}
body.is-orbit-poster .workspace{position:fixed;inset:0;display:block;width:100%;height:100dvh;margin:0;padding:0}
body.is-orbit-poster .workspace>.stage{position:absolute;inset:0;width:100%;height:100%;margin:0;border:0;border-radius:0;background:transparent}
body.is-orbit-poster .viewport{position:absolute;inset:0;width:100%;height:100%}
body.is-orbit-poster .transport,body.is-orbit-poster .viewbottom,body.is-orbit-poster .viewtop{display:none!important}

body.is-orbit-poster>main{display:block;position:fixed;inset:0;width:100%;height:100dvh;padding:0;margin:0}
body.is-orbit-poster aside{display:none!important}

body.is-orbit-poster main>*:not(.workspace){display:none!important}

/* Unified movable playback panel and accessible controls. */
.transport .integrated-description,body.external-hardware .transport .integrated-description{position:static;inset:auto;transform:none;width:100%;max-height:none;padding:0;margin:0 0 10px;background:transparent;box-shadow:none;border:0;border-radius:0;backdrop-filter:none;-webkit-backdrop-filter:none;overflow:visible}
.transport .integrated-description .lesson-headline{gap:8px;align-items:center}
.transport .integrated-description .lesson-headline h1,body.external-hardware .transport .integrated-description .lesson-headline h1{font-size:20px;line-height:1.25;flex:1;min-width:0}
.transport .integrated-description #rxr-description:not([hidden]){font-size:14px;line-height:1.4;margin:6px 0}
.transport .integrated-description .lesson-meta{font-size:11px;margin-top:4px}
.transport{width:min(760px,calc(100vw - 32px));max-height:calc(100dvh - 16px);overflow:auto}
.panel-drag-header{display:flex;align-items:center;gap:8px}
.panel-drag-grip,.panel-position-reset{border:0!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;color:inherit!important;min-width:30px!important;min-height:34px!important;padding:0!important;flex:0 0 30px;font:inherit!important;font-size:23px!important;line-height:1!important}
.panel-drag-grip{cursor:grab!important;touch-action:none;user-select:none}
.panel-position-reset{margin-left:auto;font-size:20px!important;cursor:pointer}
.panel-drag-grip:focus-visible,.panel-position-reset:focus-visible{outline:2px solid #0071ce;outline-offset:2px}
.panel-dragging{z-index:40!important}.panel-dragging .panel-drag-grip{cursor:grabbing!important}
#hardware-panel .hardware-intro{flex-wrap:wrap}#hardware-panel .hardware-intro h2{flex:1}
#first-person{white-space:nowrap;font-size:13px;padding:6px 9px;min-height:34px}
#first-person.active{color:#005da8;background:rgba(0,113,206,.12)}
.volume-slider{width:76px;min-width:50px;accent-color:#153f66;cursor:pointer;touch-action:pan-y}
.playbar{flex-wrap:wrap;row-gap:10px}.transport-actions{flex-wrap:wrap;row-gap:8px}
@media(max-width:620px){.transport{width:calc(100vw - 24px);padding:12px;bottom:12px}.transport .integrated-description .lesson-headline h1{font-size:17px}.volume-slider{width:62px}.playbar{gap:8px}.transport-actions{gap:8px}.transport .playgroup{gap:8px}#first-person{font-size:12px}.panel-drag-grip,.panel-position-reset{min-height:36px!important}}

/* Drag panels by any non-interactive surface. */
.transport,.lesson-library,#hardware-panel{cursor:grab}
.panel-dragging{cursor:grabbing!important;user-select:none}
#load-percent{min-width:110px;font-size:13px;white-space:nowrap}

/* Keep touch controls readable without squeezing text into icon buttons. */
@media(max-width:620px){
 .transport .playbar{display:grid;grid-template-columns:minmax(0,1fr) 44px 60px;gap:10px 8px;align-items:center}
 .transport .playbar>.playgroup{grid-column:1;grid-row:1;min-width:0;gap:6px}
 .transport .transport-actions{display:contents}
 .transport .transport-views{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:minmax(100px,1fr) repeat(3,44px);gap:8px;width:100%}
 .transport .transport-views button,.transport .transport-views #full{min-width:44px;width:44px;height:44px;padding:7px}
 .transport .transport-views #first-person{width:100%;min-width:100px;font-size:13px;overflow:hidden;text-overflow:ellipsis}
 .transport #mute.sound-button{grid-column:2;grid-row:1;width:44px;height:44px}
 .transport .volume-slider{grid-column:3;grid-row:1;width:60px;min-width:0;margin:0}
 .transport button.play{width:44px;height:44px}
 .transport .time{font-size:11px}.transport #back{min-width:28px;font-size:11px}
 .transport{bottom:max(12px,env(safe-area-inset-bottom));touch-action:none}
 .transport .integrated-description .lesson-headline{gap:5px}
 .transport .integrated-description .lesson-headline h1,body.external-hardware .transport .integrated-description .lesson-headline h1{font-size:17px}
 .lesson-library .panel-drag-header,.lesson-library .browser-quality-note{touch-action:none}
}
@media(max-height:500px) and (max-width:1023px){
 .transport{padding:8px 12px;bottom:8px}
 .transport .integrated-description{margin-bottom:4px}
 .transport .integrated-description #rxr-description,.transport .integrated-description .lesson-meta{display:none!important}
 .transport .progress{margin-top:0}
 .transport .playbar{padding-top:6px}
 .panel-controls{top:8px}
 .lesson-library{max-height:calc(100dvh - 72px)}
}

/* Keep the actual loading status unobstructed. */
body.lesson-loading .transport{visibility:hidden;pointer-events:none}
body.lesson-loading .loader{z-index:50}

/* Account for the website navigation covering the top of an embedded player. */
@media(max-width:1023px){
 .panel-controls{top:calc(12px + var(--embed-top-inset,0px))}
 .lesson-library,aside.promotion-sidebar.hardware-promotion{top:calc(68px + var(--embed-top-inset,0px));max-height:max(110px,calc(var(--scene-free-bottom,500px) - 80px - var(--embed-top-inset,0px)))}
}
@media(max-height:500px) and (max-width:1023px){.panel-controls{top:calc(8px + var(--embed-top-inset,0px))}}

.retry-player{margin-top:14px;padding:11px 20px;border:0;border-radius:6px;background:#153f66;color:white;min-height:44px;font-family:inherit;font-size:15px;font-weight:600;line-height:1.3}
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 .transport .integrated-description{margin-bottom:6px}
 .transport .integrated-description #rxr-description,.transport .integrated-description .lesson-meta{display:none!important}
 body.lesson-details-open .transport .integrated-description #rxr-description,body.lesson-details-open .transport .integrated-description .lesson-meta{display:block!important}
 .transport .lesson-info-toggle{display:block;min-height:36px}
 .panel-controls .panel-toggle{flex:none;width:auto;min-width:0;min-height:44px;padding:10px 15px}
 .panel-controls{justify-content:flex-start}
 .transport .panel-position-reset{font-size:18px!important;flex-basis:24px;min-width:24px!important}
 .transport .panel-drag-grip{flex-basis:24px;min-width:24px!important;font-size:21px!important}
 .transport .playbar>.playgroup{min-width:0;gap:4px}
 .transport .time{font-size:10.5px}
 .transport #back{min-width:24px;padding:4px}
 .transport .volume-slider{width:56px}
 .transport .playbar{grid-template-columns:minmax(0,1fr) 44px 56px}
}
@media(pointer:coarse){.panel-drag-grip,.panel-position-reset{min-height:44px!important}}

/* Compact panels retain every lesson and instructor detail. */
.transport{width:min(880px,calc(100vw - 24px));padding:10px 12px}
.transport .integrated-description,body.external-hardware .transport .integrated-description{margin:0 0 5px}
.transport .integrated-description .lesson-headline{gap:5px}
.transport .integrated-description .lesson-headline h1,body.external-hardware .transport .integrated-description .lesson-headline h1{font-size:18px;line-height:1.2;margin:0}
.transport .integrated-description #rxr-description:not([hidden]),body.external-hardware .transport .integrated-description #rxr-description:not([hidden]){display:block!important;margin:3px 0;font-size:13px;line-height:1.35;max-height:none;overflow:visible}
.transport .integrated-description .lesson-meta,body.external-hardware .transport .integrated-description .lesson-meta,body:not(.lesson-details-open) .transport .lesson-meta{display:flex!important;gap:4px 12px;margin:2px 0;line-height:1.25;flex-wrap:wrap}
.transport .integrated-description .lesson-info-toggle{display:none!important}
.transport .progress{margin:0;padding:0}
.transport .playbar{padding-top:5px;gap:6px 10px}
.transport .panel-drag-grip,.transport .panel-position-reset{min-height:30px!important;height:30px;font-size:19px!important}
.transport .viewbuttons button{min-height:36px;height:36px}
.transport #first-person{white-space:normal;overflow:visible;text-overflow:clip;font-size:12px;line-height:1.15}
#lesson-menu.lesson-library{width:240px;padding:8px}
#lesson-menu.lesson-library>.lesson-menu-heading{font-size:16px;line-height:1.25;margin:0 0 5px;gap:5px}
#lesson-menu.lesson-library>.browser-quality-note{font-size:14px;line-height:1.35;margin:0 2px 7px}
#lesson-menu.lesson-library>button{min-height:44px;margin:2px 0;padding:6px 7px;font-size:14px;line-height:1.25;gap:4px}
#lesson-menu.lesson-library>button>span{white-space:normal;overflow:visible;text-overflow:clip}
#lesson-menu.lesson-library>button small{font-size:11px;line-height:1.3;gap:5px;margin-top:3px}
#lesson-menu .lesson-download-size{overflow:visible;text-overflow:clip;white-space:normal;line-height:1.25;overflow-wrap:anywhere}
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 .transport{padding:8px 10px}
 .transport .integrated-description .lesson-headline h1,body.external-hardware .transport .integrated-description .lesson-headline h1{font-size:16px}
 .transport .integrated-description #rxr-description:not([hidden]){font-size:13px}
 .transport .integrated-description .lesson-meta .presenter,.transport .integrated-description .lesson-meta .presenter a,.transport .integrated-description .lesson-meta .sessioninfo{font-size:11px;line-height:1.25}
 .transport .playbar{gap:5px 6px}
 .transport .transport-views{gap:6px;grid-template-columns:minmax(104px,1fr) repeat(3,44px)}
 .transport .transport-views button,.transport .transport-views #full,.transport #mute.sound-button,.transport button.play{min-height:44px;height:44px}
 .transport .transport-views #first-person{font-size:12px;line-height:1.15;white-space:normal;overflow:visible;text-overflow:clip}
 #lesson-menu.lesson-library{width:min(290px,calc(100vw - 24px));padding:8px}
 #lesson-menu.lesson-library>button{min-height:44px;font-size:14px;padding:6px}
}
@media(max-height:500px) and (max-width:1023px){
 .transport .integrated-description #rxr-description:not([hidden]),.transport .integrated-description .lesson-meta{display:flex!important}
 .transport{bottom:6px;padding:6px 10px}
}

/* Mobile: one top row for views, one compact playback row below the lesson text. */
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 body.mobile-controls.external-hardware .panel-controls{display:grid;grid-template-columns:76px minmax(0,1fr);gap:7px;align-items:center;left:10px;right:10px}
 body.mobile-controls .panel-controls .panel-toggle{width:76px;min-width:0;min-height:44px;padding:8px 5px;font-size:12px;border-radius:6px}
 body.mobile-controls .panel-controls .transport-views{display:grid;grid-template-columns:minmax(72px,1fr) repeat(3,44px);gap:4px;min-width:0;pointer-events:auto}
 body.mobile-controls .panel-controls .transport-views button{width:44px;min-width:44px;height:44px;min-height:44px;padding:6px;font-size:17px;background:var(--ui-glass-background);-webkit-backdrop-filter:var(--ui-glass-filter);backdrop-filter:var(--ui-glass-filter);color:#173858;border-radius:6px}
 body.mobile-controls .panel-controls .transport-views #first-person{width:100%;min-width:72px;height:44px;min-height:44px;padding:4px;font-size:11.5px;line-height:1.15;white-space:normal;overflow:visible;text-overflow:clip}
 body.mobile-controls .panel-controls .orbit-label,body.mobile-controls .panel-controls .reset-label{display:none}
 body.mobile-controls .panel-controls #orbit svg{width:20px;height:20px}
 body.mobile-controls .panel-controls button.active{background:rgba(50,120,200,.20);color:#084c8d}
 body.mobile-controls .transport{width:calc(100vw - 20px);padding:7px 9px;bottom:max(8px,env(safe-area-inset-bottom))}
 body.mobile-controls .transport .playbar{display:grid;grid-template-columns:minmax(0,1fr) 44px 56px;gap:4px 6px;padding-top:3px}
 body.mobile-controls .transport .integrated-description #rxr-description:not([hidden]){font-size:13px;line-height:1.3;margin:2px 0}
 body.mobile-controls .transport .integrated-description .lesson-meta{margin:1px 0;line-height:1.2}
 body.mobile-controls .transport .integrated-description .lesson-headline h1{font-size:16px;line-height:1.2}
 body.mobile-controls .transport .integrated-description{margin-bottom:2px}
 body.mobile-controls .transport .progress input{margin:0}
 body.mobile-controls:not(.external-hardware) .panel-controls{display:grid;grid-template-columns:1fr 1fr;gap:6px;left:10px;right:10px}
 body.mobile-controls:not(.external-hardware) .panel-controls .panel-toggle{width:auto}
 body.mobile-controls:not(.external-hardware) .panel-controls .transport-views{grid-column:1/-1}
 body.mobile-controls:not(.external-hardware) .lesson-library,body.mobile-controls:not(.external-hardware) #hardware-panel{top:calc(116px + var(--embed-top-inset,0px))}
 body.lesson-loading .panel-controls .transport-views{opacity:.45;pointer-events:none}
}
@media(max-width:350px){body.mobile-controls.external-hardware .panel-controls{grid-template-columns:62px minmax(0,1fr);gap:4px;left:6px;right:6px}body.mobile-controls .panel-controls .panel-toggle{width:62px;font-size:11px}body.mobile-controls .panel-controls .transport-views{grid-template-columns:minmax(66px,1fr) repeat(3,42px);gap:3px}body.mobile-controls .panel-controls .transport-views button{width:42px;min-width:42px}body.mobile-controls .panel-controls .transport-views #first-person{min-width:66px;font-size:11px}}

/* Keep the presenter with the title, above the description and timeline. */
.transport{width:min(760px,calc(100vw - 24px))}
.transport .lesson-heading-copy{display:flex;flex:1;min-width:0;flex-wrap:wrap;align-items:baseline;gap:2px 12px}
.transport .integrated-description .lesson-heading-copy h1{flex:0 1 auto!important}
.transport .lesson-heading-copy .presenter{margin:0;font-size:12px;line-height:1.3}
.transport .lesson-heading-copy .presenter a{font-size:12px;line-height:1.3}
.transport .lesson-heading-copy .presenter>span{display:none}
.transport .integrated-description .lesson-headline{margin-bottom:0}
.transport .integrated-description .lesson-meta{margin:0!important}
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 body.mobile-controls .transport .lesson-heading-copy{gap:1px 9px}
 body.mobile-controls .transport .lesson-heading-copy .presenter,body.mobile-controls .transport .lesson-heading-copy .presenter a{font-size:11px;line-height:1.25}
 body.mobile-controls .transport .integrated-description .lesson-headline{gap:3px}
 body.mobile-controls .transport .integrated-description #rxr-description:not([hidden]){margin:2px 0 0}
}

/* Narrow playback dock with clear space at both sides. */
.transport{width:min(570px,calc(100vw - 48px))}
.transport .integrated-description .lesson-meta{display:none!important}
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 body.mobile-controls .transport{left:50%;right:auto;transform:translateX(-50%);width:min(570px,calc(100vw - 40px));padding:7px 9px}
}

.transport .integrated-description .lesson-meta,body.external-hardware .transport .integrated-description .lesson-meta,body:not(.lesson-details-open) .transport .lesson-meta{display:none!important}
@media(max-width:700px), (max-width:1023px) and (max-height:500px){
 body.mobile-controls.external-hardware .panel-controls{width:min(440px,calc(100vw - 20px));right:auto}
 body.mobile-controls .transport .transport-actions{display:contents}
 body.mobile-controls .transport .playbar>.playgroup{grid-column:1;grid-row:1;min-width:0;gap:4px}
 body.mobile-controls .transport #mute.sound-button{grid-column:2;grid-row:1;width:44px;height:44px}
 body.mobile-controls .transport .volume-slider{grid-column:3;grid-row:1;width:56px;min-width:0;margin:0}
 body.mobile-controls .transport button.play{width:44px;height:44px}
 body.mobile-controls .transport .time{font-size:10.5px}
 body.mobile-controls .transport #back{min-width:24px;padding:4px;font-size:11px}
}

html.player-expanded,html.player-expanded body{overflow:hidden;overscroll-behavior:none}
#full.active{background:rgba(50,120,200,.20);color:#084c8d}
@media(pointer:coarse){
 .panel-controls{padding-top:env(safe-area-inset-top);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}
}

/* Fullscreen is a desktop-only control. */
#full[hidden]{display:none!important}
@media(any-pointer:coarse), (max-width:1023px){
 #full{display:none!important}
 body.mobile-controls .panel-controls .transport-views{grid-template-columns:minmax(72px,1fr) repeat(2,44px)}
 body.mobile-controls .transport .transport-views{grid-template-columns:minmax(104px,1fr) repeat(2,44px)}
 body.mobile-controls.external-hardware .panel-controls{width:min(392px,calc(100vw - 20px))}
}

body.flow-comparison .lesson-library,body.flow-comparison .transport,body.flow-comparison .panel-controls,body.flow-comparison .autoplay-hint,body.flow-comparison .promotion-sidebar{display:none!important}

.transport .flow-rhythm-note{font-size:11px;line-height:1.3;margin:3px 0;color:#35566e}
.transport .flow-rhythm-note[hidden]{display:none!important}

.lesson-overview .flow-rhythm-note{white-space:pre-line;font-size:12px;line-height:1.45;color:#26475f;margin:10px 0 0;font-variant-numeric:tabular-nums}
.lesson-overview .flow-rhythm-note[hidden]{display:none!important}
body.flow-comparison .lesson-overview{max-width:310px}

.viewport>.flow-rhythm-note{position:absolute;right:16px;top:16px;z-index:12;width:250px;max-width:calc(100% - 32px);padding:12px 14px;margin:0;border:0;border-radius:10px;background:rgba(245,250,255,.83);backdrop-filter:blur(18px);color:#193c54;white-space:pre-line;font-size:12px;line-height:1.5;font-variant-numeric:tabular-nums;pointer-events:none}
.viewport>.flow-rhythm-note[hidden]{display:none!important}
body:not(.flow-comparison) .viewport>.flow-rhythm-note{top:auto;bottom:110px}
@media(max-width:620px){.viewport>.flow-rhythm-note{font-size:11px;width:226px;right:10px;top:10px;padding:9px 11px}body:not(.flow-comparison) .viewport>.flow-rhythm-note{bottom:150px}}

.flow-red-color{position:absolute;top:16px;left:16px;z-index:25;display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;background:rgba(245,250,255,.83);backdrop-filter:blur(18px);color:#193c54;font:12px/1.4 Arial,sans-serif;box-shadow:0 3px 18px #15324c14}
.flow-red-color[hidden]{display:none!important}
.flow-red-color input[type=color]{width:44px;height:36px;min-width:44px;padding:2px;border:1px solid #a9bdca;border-radius:6px;background:transparent;cursor:pointer;touch-action:manipulation}
.flow-red-color output{font-family:monospace;font-size:12px}
@media(max-width:620px){.flow-red-color{top:auto;bottom:18px;left:10px;gap:8px}}

.flow-colour-panel{display:block;width:252px;max-height:calc(100% - 36px);overflow:auto;padding:10px 12px}
.flow-colour-panel summary{font-weight:600;cursor:pointer;padding:4px 0;min-height:26px}
.flow-colour-row{display:grid;grid-template-columns:1fr 44px 64px;align-items:center;gap:8px;margin-top:5px}
.flow-colour-row label{cursor:pointer}
@media(max-width:620px){.flow-colour-panel{max-height:45%;bottom:12px;width:248px}}

.flow-colour-panel{width:318px;max-width:calc(100% - 20px)}
.flow-colour-row{grid-template-columns:1fr 44px 64px 48px;gap:7px}
.flow-colour-alpha{font-size:11px;text-align:right;color:#35566e;white-space:nowrap}
.flow-alpha-note{font-size:10px;line-height:1.4;margin:9px 0 2px;color:#526d7f}

.flow-opacity-row{display:grid;grid-template-columns:1fr 44px;gap:4px 8px;margin-top:12px;align-items:center}
.flow-opacity-row label{grid-column:1 / -1;font-size:12px}
.flow-opacity-row input[type=range]{width:100%;min-height:30px;cursor:pointer;accent-color:#3378a7}
.flow-opacity-row output{text-align:right;font-family:monospace}

.flow-colour-row{padding-bottom:7px;border-bottom:1px solid #b9cbd455}
.flow-single-opacity{grid-column:1 / -1;width:100%;height:24px;margin:0;accent-color:#3378a7;cursor:pointer}

body:not(.flow-comparison) .viewport>.flow-rhythm-note{top:88px;bottom:auto;width:auto;max-width:260px;padding:8px 10px;font-size:11px}

/* Localized player labels keep the controls and anatomical viewport usable. */
html[dir="rtl"] .lesson-menu button,html[dir="rtl"] .lesson-overview{text-align:start}
html[dir="rtl"] .transport,html[dir="rtl"] .loading-progress,html[dir="rtl"] .time{direction:ltr}
html[dir="rtl"] .lesson-overview h1{letter-spacing:normal}

html[dir="rtl"] .transport .lesson-overview{direction:rtl}