:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#232725;background:#f6f6f3;--bg:#f6f6f3;--panel:#fff;--ink:#232725;--muted:#7d817b;--line:#dedfd9;--accent:#253e35;color-scheme:light}*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit}button,select{color:var(--ink);background:transparent;border:1px solid var(--line);border-radius:7px;cursor:pointer;min-height:40px}button{padding:8px 16px;transition:background .18s,color .18s}button:hover{background:var(--line)}button:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid #4c8771;outline-offset:3px}button[aria-pressed=true],button.selected{background:var(--ink);color:var(--bg);border-color:var(--ink)}[hidden]{display:none!important}#explorer{max-width:1800px;min-height:100svh;margin:auto;display:flex;flex-direction:column;padding:0 42px}header{height:100px;display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line)}.brand{font-size:34px;letter-spacing:-2px;font-weight:650;text-decoration:none;color:var(--ink)}.brand span{font-size:12px;vertical-align:top;margin:7px 0 0 4px;display:inline-block;letter-spacing:0}.edition{font-size:11px;letter-spacing:2px;font-weight:500}.edition i{font-style:normal;color:#bbb;margin:0 10px}.preferences{display:flex;align-items:center;gap:9px;margin-left:auto}.preferences select{padding:4px 10px;border:0;background:var(--bg);font-size:12px}.preferences button{border:0;font-size:23px;padding:4px 8px;width:40px}.modes{display:flex;align-self:center;padding:4px;border:1px solid var(--line);border-radius:100px;gap:4px;margin:24px 0 0;z-index:2}.modes button{border:0;border-radius:100px;font-size:13px;padding:10px 24px}.workspace{display:grid;grid-template-columns:minmax(0,1fr);flex:1;min-height:510px;position:relative}#viewport{position:relative;min-width:0;min-height:500px;height:min(63vh,690px)}#scene{width:100%;height:100%;display:block;touch-action:none;outline:none}#loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg);color:var(--muted)}#loading span{font-size:70px;font-weight:200;color:var(--ink)}#loading p{font-size:12px;letter-spacing:1px}.zoom-tools{position:absolute;right:0;top:50%;display:grid;gap:6px;transform:translateY(-50%)}.zoom-tools button{width:42px;height:42px;padding:0;font-size:24px;border-radius:50%;background:var(--panel)}.caption{position:absolute;left:0;bottom:22px;display:flex;align-items:flex-start;gap:15px;pointer-events:none}.dash{width:36px;height:1px;background:var(--ink);margin-top:8px}.caption h1{font-weight:600;font-size:13px;letter-spacing:2px;margin:0 0 8px}.caption p{font-size:12px;color:var(--muted);margin:0}footer{padding:0 0 26px}.hint{text-align:center;font-size:12px;color:var(--muted);margin:0 0 20px}.view-bar{display:flex;justify-content:center;gap:24px;align-items:center}.views{display:flex;gap:5px}.view-bar button{font-size:12px;border:0}.view-bar #rotate{border-left:1px solid var(--line);border-radius:0;padding-left:25px}.fineprint{display:flex;justify-content:space-between;font-size:9px;letter-spacing:1px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:25px}.screen-mode .workspace{grid-template-columns:minmax(0,1fr) minmax(400px,.85fr);align-items:center;gap:30px}.screen-mode #viewport{min-height:470px}.screen-mode .caption{bottom:18px}#screen-console{background:var(--panel);padding:25px;border:1px solid var(--line);border-radius:14px;margin:24px 0}.screen-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.screen-heading span{font-size:10px;letter-spacing:2px;color:var(--muted)}.screen-heading button{font-size:11px;min-height:32px}#device-screen{position:relative;aspect-ratio:2.4;background:#000;border-radius:8px;overflow:hidden;touch-action:none;user-select:none;outline:none}#screen-canvas{display:block;width:100%;height:100%}#hotspots{position:absolute;inset:0}#hotspots button{position:absolute;border:0;border-radius:0;padding:0;background:transparent;color:transparent;min-height:0}#hotspots button:hover{background:rgba(255,255,255,.03)}#hotspots button:focus-visible{outline:2px solid #fff;outline-offset:-3px}#device-screen.holding .hold-indicator{position:absolute;bottom:0;left:0;height:3px;background:#a9ded0;animation:hold 2s linear forwards}.gesture{font-size:11px;line-height:1.65;color:var(--muted);margin:14px 0 18px}.screen-actions{display:flex;flex-wrap:wrap;gap:5px}.screen-actions button{font-size:11px;min-height:32px;padding:5px 10px}.volume-control{display:flex;gap:9px;align-items:center;margin-top:15px}.volume-control button{padding:0;width:30px;min-height:30px}.volume-control input{width:100%;min-width:40px;accent-color:var(--accent)}.volume-control output{font-size:12px;white-space:nowrap;min-width:67px}.disclosure{font-size:10px;line-height:1.6;color:var(--muted);margin:18px 0 0}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}[data-theme=dark]{--bg:#141716;--panel:#1b201d;--ink:#e7e9e3;--muted:#92998e;--line:#353c36;--accent:#acd1b8;color:var(--ink);background:var(--bg);color-scheme:dark}@keyframes hold{from{width:0}to{width:100%}}@media(max-width:950px){#explorer{padding:0 22px}.edition{display:none}header{height:80px}.screen-mode .workspace{grid-template-columns:1fr}.screen-mode #viewport{height:38vh;min-height:280px}.screen-mode #screen-console{margin-top:0}.screen-mode .caption{bottom:0}.screen-mode .zoom-tools{right:0}#viewport{height:60vh;min-height:400px}.fineprint{gap:20px}}@media(max-width:550px){#explorer{padding:0 16px}header{height:72px;gap:8px}.brand{font-size:29px}.preferences{gap:2px}.preferences select{width:90px}.modes{margin-top:19px}.modes button{font-size:12px;padding:8px 20px}#viewport{height:53vh;min-height:330px}.workspace{min-height:0}.caption{bottom:13px}.caption h1{font-size:11px}.caption p{font-size:10px}.dash{width:24px}.zoom-tools button{width:34px;height:34px;font-size:20px}.view-bar{gap:10px;flex-wrap:wrap}.views{gap:0}.views button{font-size:11px;padding:8px 12px}.view-bar #rotate{border:0;padding:5px 20px;min-height:32px}.hint{font-size:10px;margin:10px 0 12px}.fineprint{font-size:8px;letter-spacing:.2px;line-height:1.5}.fineprint span:first-child{flex-shrink:0}.screen-mode #viewport{height:32vh;min-height:230px}#screen-console{padding:15px}.screen-mode .caption{display:none}.gesture{font-size:10px}.screen-mode footer{margin-top:8px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}

@media(max-height:500px) and (min-width:551px){header{height:60px}.modes{margin-top:12px}#viewport{min-height:210px;height:60vh}.workspace{min-height:0}.caption{bottom:6px}.hint{margin-top:12px}.screen-mode #viewport{min-height:230px;height:55vh}}

.ui-source{font-size:10px;letter-spacing:.05em;color:var(--muted);margin:12px 0 0}.screen-actions{flex-wrap:wrap}

#antenna-controls{max-width:650px;margin:18px auto 0;font-size:12px}#antenna-controls summary{cursor:pointer;text-align:center;color:var(--muted);padding:8px}#antenna-controls p{font-size:10px;color:var(--muted);text-align:center}.antenna-sliders{display:flex;gap:18px;align-items:center;justify-content:center;padding:12px;border:1px solid var(--line);border-radius:10px}.antenna-sliders label{display:flex;align-items:center;gap:8px;flex:1}.antenna-sliders input{width:100%;min-width:50px;accent-color:var(--accent)}.antenna-sliders output{min-width:36px}.antenna-sliders button{font-size:11px;min-height:32px;white-space:nowrap}@media(max-width:550px){.antenna-sliders{flex-wrap:wrap}.antenna-sliders label{flex-basis:100%}}

#hotspots .native-slider{position:absolute;margin:0;opacity:0;cursor:ew-resize;touch-action:none;min-width:0}#hotspots .native-slider:focus-visible{opacity:.3;outline:2px solid #91d8c5}#explorer.mode-transitioning .zoom-tools,#explorer.mode-transitioning .caption{pointer-events:none}.workspace{isolation:isolate}#viewport.mode-flying{position:absolute!important;min-height:0!important;z-index:1}#screen-console.mode-flying{position:absolute!important;z-index:2;margin:0!important}#explorer.mode-transitioning .workspace{min-height:0!important;flex:none!important;overflow:hidden}#explorer.screen-mode .view-bar,#explorer.screen-mode .zoom-tools{opacity:.35;pointer-events:none}#explorer.screen-mode #scene{cursor:default}
/* V4.4: shared B9 / X8 chrome and control hierarchy; X9 keeps two experiences. */
:root{font-family:Inter,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;--bg:#fff;--panel:#ffffffed;--ink:#242729;--muted:#646e74;--line:#dce1e4;--accent:#997643;--selected:#f0e9de;--selected-ink:#624b2e;--selected-border:#cab797}
body{background:var(--bg)}#explorer{max-width:none;padding:0 4.7%;background:radial-gradient(ellipse at 48% 50%,#edf0f2 0,#f8f9fa 45%,#fff 78%);min-height:100svh}
.masthead{height:80px;gap:16px}.brand{font-size:30px;font-weight:750;letter-spacing:-1.5px;white-space:nowrap}.brand .brand-dot{font-size:inherit;letter-spacing:inherit;margin:0;vertical-align:baseline;color:#9a794c;display:inline}.edition{font-size:10px;letter-spacing:2.3px}.live-badge{margin-left:auto;display:flex;align-items:center;gap:9px;font-size:10px;letter-spacing:1.8px;border:1px solid var(--line);padding:10px 14px;border-radius:30px;white-space:nowrap;color:var(--muted)}.live-badge i{width:5px;height:5px;background:#97754a;border-radius:50%}.preferences{margin-left:0;gap:12px}.language-control{display:flex;align-items:center;gap:6px;min-width:0}.language-control svg{width:18px;height:18px;flex-shrink:0}.language-control select{width:126px;max-width:32vw;height:38px;padding:0 9px;border:1px solid var(--line);border-radius:19px;background:var(--panel);color:var(--muted);font-size:13px}.theme-switch{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:24px;background:var(--panel)}.theme-switch button{width:34px;min-height:34px;height:34px;padding:7px;border-radius:50%}.theme-switch button[aria-pressed=true]{background:var(--selected);color:var(--selected-ink)}svg{fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}
button:disabled{opacity:.38;cursor:wait}button[aria-pressed=true],button.selected{background:var(--selected);color:var(--selected-ink);border-color:var(--selected-border)}button:focus-visible,select:focus-visible,canvas:focus-visible{outline-color:var(--accent)}
.modes{align-self:stretch;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:0 0 14px;gap:8px;margin:24px 0 0}.modes button{border:1px solid transparent;min-height:44px;padding:10px 24px;font-size:13px;color:var(--muted);white-space:normal;line-height:1.25}.modes button.selected{border-color:var(--selected-border);color:var(--selected-ink)}.workspace-hint{font-size:11px;color:var(--muted);line-height:1.8;min-height:20px;margin:12px 0 0}
.workspace{min-height:410px}#viewport{height:clamp(360px,55vh,660px);min-height:360px}.caption{display:none}.zoom-tools{left:50%;right:auto;top:auto;bottom:15px;display:flex;align-items:center;transform:translateX(-50%);padding:3px;gap:2px;border:1px solid var(--line);border-radius:32px;background:var(--panel);box-shadow:0 8px 24px #26343d09;white-space:nowrap}.zoom-tools button{width:40px;height:40px;border:0;background:transparent;font-size:23px}.zoom-tools button:hover{background:var(--line)}#zoom-value{font-size:9px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:32px;text-align:center}.tool-separator{height:18px;width:1px;background:var(--line);margin:0 4px}
.hint{font-size:11px;letter-spacing:.3px;margin:10px 0 16px}.touch-hint{display:none}.view-bar{width:max-content;max-width:100%;margin:auto;gap:8px;padding:6px;border:1px solid var(--line);border-radius:30px;background:var(--panel);box-shadow:0 8px 24px #26343d09;flex-wrap:wrap}.views{gap:4px;max-width:100%}.views button{border:1px solid transparent;border-radius:24px;min-height:44px;padding:10px 17px;min-width:60px}.views button[aria-pressed=true]{border-color:var(--selected-border)}.view-bar #rotate{border-radius:22px;border-left:0;padding:10px 14px;min-height:44px}.fineprint{border-top:0;letter-spacing:.5px;gap:20px;line-height:1.7}.fineprint span:last-child{text-align:right}.fineprint span:first-child{flex-shrink:0}#release-version{text-align:center;font-size:10px;color:var(--muted);padding:0 0 14px}
.screen-mode .workspace{grid-template-columns:minmax(0,1.5fr) minmax(370px,1fr);gap:28px}.screen-mode #viewport{height:clamp(360px,55vh,660px);min-height:360px}.screen-mode .zoom-tools{visibility:hidden}.screen-mode footer>.hint,.screen-mode footer>.view-bar,.screen-mode #antenna-controls{display:none}
#screen-console{padding:24px;border-radius:18px;box-shadow:0 12px 40px #25323b07;margin:24px 0;background:var(--panel)}.screen-heading{min-height:54px;margin-bottom:24px}.screen-heading span{font-size:10px;letter-spacing:2px;color:#84643a}.screen-heading strong{display:block;font-size:20px;font-weight:500;margin-top:9px}#device-screen{border-radius:0;box-shadow:0 0 0 7px #161a1d,0 0 0 8px #d7dce0,0 12px 30px #20282d18;color-scheme:dark}.gesture{display:flex;justify-content:center;gap:6px 10px;flex-wrap:wrap;margin:20px 0 14px;color:var(--selected-ink);font-size:11px;line-height:1.6}.gesture span{background:var(--selected);border:1px solid var(--selected-border);border-radius:18px;padding:5px 10px}.screen-actions{justify-content:center}.screen-actions button,.volume-control button{min-height:44px;padding:8px 18px;border-radius:22px;font-size:12px}.volume-control{justify-content:center;flex-wrap:wrap;font-size:12px}.volume-control button{width:auto}.volume-control output{min-width:60px;text-align:center}.disclosure{font-size:11px;text-align:center}.screen-power{display:block;max-width:100%;margin:12px auto 0;font-size:12px;line-height:1.5;border-radius:24px;border-color:var(--selected-border);background:var(--selected);color:var(--selected-ink);min-height:44px}.progress-track{height:2px;width:180px;background:var(--line);overflow:hidden;margin-top:14px}#progress{height:100%;width:0;background:var(--accent)}#loading{z-index:4;border-radius:14px;background:var(--bg)}#loading p{max-width:85%;line-height:1.8;text-align:center}.antenna-sliders button{min-height:44px}#detail-status{text-align:center;font-size:11px;color:var(--muted)}#detail-status button{margin-left:10px;min-height:44px}#ui-retry{display:block;margin:12px auto}
[data-theme=dark]{--bg:#121416;--panel:#161a1ded;--ink:#f1f1ed;--muted:#a2a7aa;--line:#ffffff24;--accent:#c5aa83;--selected:#c7ac7f18;--selected-ink:#eed7b6;--selected-border:#c7ac7f66}html[data-theme=dark] #explorer{background:radial-gradient(ellipse at 49% 49%,#35383b 0,#202326 36%,#121416 73%)}[data-theme=dark] .screen-heading span{color:#c8ae89}
@media(pointer:coarse){.desktop-hint{display:none}.touch-hint{display:inline}}
@media(max-width:1000px){.edition{display:none}#explorer{padding:0 4%}.screen-mode .workspace{grid-template-columns:1fr}.screen-mode #viewport{height:270px;min-height:270px}.screen-mode #screen-console{margin:15px auto 24px;width:min(100%,660px)}}
@media(max-width:700px){.masthead{height:76px;gap:7px}.brand{font-size:26px}.live-badge{display:none}.preferences{margin-left:auto;gap:5px}.language-control{gap:4px}.language-control select{width:109px;font-size:12px;height:34px;padding:0 6px}.language-control svg{width:16px;height:16px}.theme-switch button{width:30px;min-height:30px;height:30px;padding:6px}.modes{margin-top:20px}.modes button{padding:10px 17px;flex:1;min-width:0}.workspace-hint{font-size:10px}.workspace{min-height:0}#viewport{height:45svh;min-height:280px}.zoom-tools{bottom:5px}.zoom-tools button{width:36px;height:36px}.view-bar{border-radius:22px;justify-content:center;width:100%;gap:0;padding:4px}.views{width:100%;justify-content:center;gap:0;flex-wrap:wrap}.views button{min-width:0;padding:8px 10px;font-size:11px;flex:1}.view-bar #rotate{font-size:11px;min-height:40px}.hint{font-size:10px}.fineprint{font-size:8px}.screen-mode #viewport{height:185px;min-height:185px}#screen-console{padding:20px 17px}.screen-heading{margin-bottom:22px}.screen-heading strong{font-size:18px}.gesture{font-size:10px}.antenna-sliders{flex-wrap:wrap}.antenna-sliders label{flex-basis:100%}}
@media(max-width:380px){.language-control svg{display:none}.language-control select{width:100px}.preferences{gap:3px}.brand{font-size:24px}}

/* Screen content notice, aligned with B9. */
#explorer .screen-version-note{margin:10px 0 14px;font-size:11px;line-height:1.5;color:#657078;overflow-wrap:anywhere;text-align:left}
html[data-theme="dark"] #explorer .screen-version-note{color:#aeb5ba}

/* A compact control row retains the X9 volume, mute and screen power actions. */
#screen-console .volume-control{display:flex;justify-content:center;align-items:center;gap:8px;margin:14px 0 0;flex-wrap:wrap}
#screen-console .volume-control button{min-height:40px;height:40px;padding:0 12px;border-radius:20px}
#screen-console .volume-control #minus,#screen-console .volume-control #plus,#screen-console .volume-control #screen-power{width:40px;padding:0;font-size:18px}
#screen-console .volume-control #screen-power{display:inline-flex;align-items:center;justify-content:center;margin:0;line-height:1}
#screen-console .volume-control output{min-width:62px;text-align:center;font-size:12px}
@media(max-width:400px){#screen-console .volume-control{gap:4px}#screen-console .volume-control output{min-width:56px}#screen-console .volume-control #mute{padding:0 9px}}

#screen-console .volume-control #mute{width:40px;padding:0;display:inline-flex;align-items:center;justify-content:center}
#screen-console .volume-control #mute svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linejoin:round;stroke-linecap:round}