.viewer-stage .board-host { position: absolute; inset: 0; z-index: 2; }

.viewer-stage.has-tabs .viewer-wm { display: none; }

.viewer-stage .viewer-wm {
  position: absolute; inset: -40%; z-index: 4; pointer-events: none; overflow: hidden;
  transform: rotate(-24deg); opacity: .13; user-select: none;
  
  background-color: #fff; mix-blend-mode: difference;
  -webkit-mask-image: var(--wm-tile); mask-image: var(--wm-tile);
  -webkit-mask-repeat: repeat; mask-repeat: repeat;
  -webkit-mask-position: 0 0; mask-position: 0 0;
}
.viewer-stage .status { z-index: 6; }

.bv-root {
  position: absolute; inset: 0; overflow: hidden; background: var(--viewer-bg, #fff);
  font-family: var(--font-body); user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;
  --glass: rgba(13, 20, 34, .82);
  --glass-line: rgba(255, 255, 255, .12);
  --glass-ink: #E7ECF6;
  --glass-muted: #93A3BF;
  --accent: #14C8E6;
}

.bv-vp { position: absolute; inset: 0; overflow: hidden; touch-action: none; background: var(--viewer-bg, #fff); cursor: default; }
.bv-vp.on-pad { cursor: pointer; }
.bv-vp.dragging { cursor: grabbing; }
.bv-canvas { position: absolute; left: 0; top: 0; z-index: 2; display: block; transform-origin: 0 0; will-change: transform; }

.bv-line { position: absolute; left: 0; top: 0; z-index: 28; display: block; transform-origin: 0 0; will-change: transform; pointer-events: none; }

.bv-wm {
  position: absolute; inset: 20%; z-index: 0; pointer-events: none;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4%;
}

.bv-wm-logo {
  display: block; height: 66%; aspect-ratio: 1 / 1; width: auto; min-height: 0; opacity: .78;
  
  filter:
    drop-shadow(-1px -1px 1px var(--viewer-emboss))
    drop-shadow(1px 1px 0 var(--viewer-emboss-2))
    drop-shadow(2px 2px 0 var(--viewer-emboss-2))
    drop-shadow(3px 4px 6px rgba(38, 52, 78, .16));
}
.bv-wm-logo i {
  display: block; width: 100%; height: 100%;
  background-color: var(--viewer-wm, #eef1f5);
  -webkit-mask: var(--brand-mark) center / contain no-repeat;
  mask: var(--brand-mark) center / contain no-repeat;
}
.bv-wm-name {
  font-family: var(--font-display); font-size: min(11vw, 13vh); font-weight: 800; letter-spacing: .06em; white-space: nowrap; color: var(--viewer-wm, #eef1f5);
  text-shadow: -1px -1px 1px var(--viewer-emboss), 1px 1px 0 var(--viewer-emboss-2), 2px 2px 0 var(--viewer-emboss-2), 3px 4px 6px rgba(38,52,78,.16);
  opacity: .78;
}

.bv-chip {
  position: absolute; top: 12px; left: 12px; z-index: 20; max-width: 46%;
  display: flex; align-items: baseline; gap: 9px; padding: 8px 13px;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 11px;
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 10px 28px -14px rgba(4, 10, 22, .8);
}
.bv-chip::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); flex: none; align-self: center; }
.bv-name { font-size: 13px; font-weight: 650; color: var(--glass-ink); letter-spacing: .01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bv-model { font-family: var(--font-mono); font-size: 11px; color: var(--glass-muted); white-space: nowrap; }

.bv-search {
  position: absolute; top: 12px; left: 50%; z-index: 21; width: min(340px, 42%);
  opacity: 0; visibility: hidden; transform: translateX(-50%) translateY(-10px) scale(.97);
  transition: opacity .18s ease, transform .2s cubic-bezier(.2, .8, .2, 1), visibility .2s;
}
.bv-search.open { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0) scale(1); }
.bv-search-ic { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); display: flex; color: var(--glass-muted); pointer-events: none; }
.bv-search-ic svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; }
.bv-search input {
  width: 100%; height: 40px; padding: 0 14px 0 36px; font: inherit; font-size: 13px;
  color: var(--glass-ink); background: var(--glass); border: 1px solid var(--glass-line); border-radius: 11px;
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 10px 28px -14px rgba(4, 10, 22, .8); transition: border-color .15s, box-shadow .15s;
}
.bv-search input::placeholder { color: var(--glass-muted); }
.bv-search input:focus { outline: none; border-color: color-mix(in srgb, var(--accent) 60%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent), 0 10px 28px -14px rgba(4, 10, 22, .8); }
.bv-search-list {
  position: absolute; top: 46px; left: 0; right: 0; z-index: 30; max-height: 280px; overflow: auto;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 12px;
  backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 24px 48px -20px rgba(4, 10, 22, .9);
}
.bv-search-list button {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px; width: 100%;
  border: 0; background: none; padding: 9px 12px; font: inherit; font-size: 13px; text-align: left;
  cursor: pointer; color: var(--glass-ink); border-top: 1px solid rgba(255,255,255,.07);
}
.bv-search-list button:first-child { border-top: 0; }
.bv-search-list button:hover { background: rgba(255,255,255,.07); }
.bv-search-list button b { font-weight: 600; }
.bv-search-list button span { color: var(--glass-muted); font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; }
.bv-search-empty { padding: 11px 12px; font-size: 12.5px; color: var(--glass-muted); }

.bv-root.has-card .bv-search { width: min(300px, 26%); }

.bv-rail {
  position: absolute; top: 12px; right: 12px; z-index: 20;
  display: flex; flex-direction: column; gap: 4px; padding: 6px;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 13px;
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 14px 34px -16px rgba(4, 10, 22, .85);
}
.bv-rail-group { display: flex; flex-direction: column; gap: 4px; }
.bv-rail-sep { height: 1px; margin: 3px 5px; background: var(--glass-line); }
.bv-tog {
  width: 38px; height: 38px; border-radius: 9px; border: 1px solid transparent; background: transparent;
  display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--glass-muted);
  padding: 0; transition: background .14s, color .14s, border-color .14s;
}
.bv-tog:hover { background: rgba(255,255,255,.09); color: var(--glass-ink); }
.bv-tog.on { background: color-mix(in srgb, var(--accent) 20%, transparent); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 42%, transparent); }
.bv-tog svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.bv-pop {
  position: absolute; top: 60px; right: 62px; z-index: 25; width: 272px;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 14px;
  backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4);
  box-shadow: 0 28px 56px -22px rgba(4, 10, 22, .9), 0 0 0 1px rgba(255,255,255,.02) inset;
  display: flex; flex-direction: column; overflow: hidden;
  animation: bvPopIn .16s cubic-bezier(.2, .8, .2, 1) both;
}
@keyframes bvPopIn { from { opacity: 0; transform: translateY(-6px) scale(.98); } to { opacity: 1; transform: none; } }
.bv-pop-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 11px 12px 10px 14px; border-bottom: 1px solid var(--glass-line); }
.bv-pop-title { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--glass-ink); letter-spacing: .01em; }
.bv-pop-title svg { width: 16px; height: 16px; stroke: var(--accent); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.bv-pop-x { width: 26px; height: 26px; border: 0; border-radius: 7px; background: transparent; color: var(--glass-muted); font-size: 12px; cursor: pointer; display: grid; place-items: center; }
.bv-pop-x:hover { background: rgba(255,255,255,.09); color: var(--glass-ink); }
.bv-pop-body { padding: 12px 12px 13px; display: flex; flex-direction: column; gap: 9px; }
.bv-pop-sub { font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--glass-muted); margin: 3px 2px -2px; }

.bv-seg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; padding: 3px; border-radius: 10px; background: rgba(255,255,255,.06); border: 1px solid var(--glass-line); }
.bv-seg button { border: 0; background: transparent; border-radius: 7px; padding: 7px 4px; font: inherit; font-size: 12px; font-weight: 650; color: var(--glass-muted); cursor: pointer; transition: background .14s, color .14s; }
.bv-seg button:hover { color: var(--glass-ink); }
.bv-seg button.on { background: var(--accent); color: #04121A; box-shadow: 0 4px 12px -6px var(--accent); }

.bv-swatches { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.bv-sw { aspect-ratio: 1; border-radius: 50%; border: 0; background: var(--c); cursor: pointer; box-shadow: inset 0 0 0 1px rgba(255,255,255,.18), 0 2px 6px -2px rgba(0,0,0,.5); transition: transform .12s, box-shadow .12s; }
.bv-sw:hover { transform: scale(1.08); }
.bv-sw.on { box-shadow: 0 0 0 2px var(--glass), 0 0 0 4px var(--accent); }
.bv-custom { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 7px 8px 7px 11px; border-radius: 10px; border: 1px solid var(--glass-line); background: rgba(255,255,255,.04); font-size: 12px; font-weight: 600; color: var(--glass-muted); cursor: pointer; }
.bv-cpick { width: 44px; height: 26px; border: 1px solid var(--glass-line); border-radius: 7px; padding: 2px; cursor: pointer; -webkit-appearance: none; appearance: none; background: transparent; }
.bv-cpick::-webkit-color-swatch-wrapper { padding: 0; border-radius: 5px; }
.bv-cpick::-webkit-color-swatch { border: none; border-radius: 5px; }
.bv-pop-link { border: 0; background: transparent; padding: 2px; font: inherit; font-size: 11.5px; font-weight: 600; color: var(--accent); cursor: pointer; text-align: left; }
.bv-pop-link:hover { text-decoration: underline; }

.bv-opt { display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; padding: 9px 10px; border-radius: 11px; border: 1px solid var(--glass-line); background: rgba(255,255,255,.035); cursor: pointer; font: inherit; color: var(--glass-ink); transition: background .14s, border-color .14s; }
.bv-opt:hover { background: rgba(255,255,255,.07); }
.bv-opt.on { border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.bv-opt-ic { width: 30px; height: 30px; flex: none; border-radius: 8px; display: grid; place-items: center; background: rgba(255,255,255,.07); color: var(--glass-muted); }
.bv-opt.on .bv-opt-ic { background: color-mix(in srgb, var(--accent) 22%, transparent); color: var(--accent); }
.bv-opt-ic svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.bv-opt-t { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.bv-opt-t b { font-size: 12.5px; font-weight: 650; }
.bv-opt-t small { font-size: 11px; color: var(--glass-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bv-switch { position: relative; flex: none; width: 34px; height: 20px; border-radius: 999px; background: rgba(255,255,255,.14); transition: background .16s; }
.bv-switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 14px; height: 14px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.4); transition: transform .16s; }
.bv-opt.on .bv-switch { background: var(--accent); }
.bv-opt.on .bv-switch::after { transform: translateX(14px); }

.bv-menu-val { font-style: normal; font-family: var(--font-mono); font-size: 11px; color: var(--glass-muted); padding: 1px 7px; border-radius: 999px; border: 1px solid var(--glass-line); }
.bv-menu-row.on .bv-menu-val { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.bv-vp { transform-origin: 50% 50%; }

.bv-search input, .bv-search input:focus {
  user-select: text; -webkit-user-select: text; -webkit-touch-callout: default; touch-action: auto;
}

.bv-ncard {
  position: absolute; right: 74px; top: 12px; z-index: 22; width: 244px; max-width: calc(100% - 24px);
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 13px;
  backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 24px 48px -20px rgba(4, 10, 22, .9);
  padding: 12px 14px 13px; font-size: 12px; color: var(--glass-ink);
  user-select: text; -webkit-user-select: text;
}
.bv-ncard::before { content: ''; position: absolute; left: 0; top: 14px; bottom: 14px; width: 3px; border-radius: 0 3px 3px 0; background: var(--accent); }
.bv-ncard-x { position: absolute; top: 8px; right: 8px; width: 24px; height: 24px; border: none; border-radius: 7px; background: rgba(255,255,255,.08); color: var(--glass-muted); font-size: 12px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.bv-ncard-x:hover { background: rgba(255,255,255,.16); color: var(--glass-ink); }
.bv-nc-net { font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; color: var(--accent); letter-spacing: .02em; margin: 0 26px 9px 0; word-break: break-all; }
.bv-nc-rows { display: flex; flex-direction: column; gap: 6px; }
.bv-nc-row { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.bv-nc-k { color: var(--glass-muted); font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; }
.bv-nc-v { color: var(--glass-ink); font-family: var(--font-mono); font-size: 12px; text-align: right; word-break: break-all; }

.bv-tip {
  position: absolute; left: 0; top: 0; z-index: 23; pointer-events: none;
  min-width: 168px; max-width: 250px; padding: 9px 12px 10px;
  background: rgba(58, 66, 84, .9); border: 1px solid rgba(255, 140, 0, .95); border-radius: 11px;
  backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 18px 36px -16px rgba(0, 0, 0, .9);
  font-size: 12px; color: var(--glass-ink);
  --glass-ink: #E7ECF6; --glass-muted: #93A3BF;   
}
.bv-tip::before { content: ''; position: absolute; left: 0; top: 10px; bottom: 10px; width: 3px; border-radius: 0 3px 3px 0; background: rgb(255, 140, 0); }
.bv-tip-net { font-family: var(--font-mono); font-size: 12.5px; font-weight: 600; color: rgb(255, 163, 51); margin-bottom: 6px; word-break: break-all; }
.bv-tip .bv-nc-row + .bv-nc-row { margin-top: 4px; }

.bv-progress { position: absolute; inset: 0; z-index: 30; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,.72); backdrop-filter: blur(3px); transition: opacity .3s; }
.bv-progress.done { opacity: 0; }
.bv-progress-card {
  display: flex; flex-direction: column; align-items: center; gap: 13px; padding: 24px 32px;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 16px;
  backdrop-filter: blur(16px) saturate(1.4); -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 28px 56px -22px rgba(4, 10, 22, .9);
}
.bv-progress-card span { font-size: 12px; color: var(--glass-muted); letter-spacing: .03em; }
.bv-ring { position: relative; width: 72px; height: 72px; }
.bv-ring svg { width: 72px; height: 72px; transform: rotate(-90deg); }
.bv-ring circle { fill: none; stroke-width: 5; }
.bv-ring .bg { stroke: rgba(255,255,255,.14); }
.bv-ring .fg { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset .2s ease; }
.bv-ring b { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 17px; font-weight: 700; color: var(--glass-ink); font-variant-numeric: tabular-nums; }

@media (max-width: 720px) {
  .bv-chip { padding: 7px 11px; }
  .bv-name { font-size: 12.5px; }

  .bv-search { top: 10px; left: 142px; right: 10px; width: auto; transform: translateY(-10px) scale(.97); }
  .bv-search.open { transform: translateY(0) scale(1); }
  .bv-search input { height: 40px; }
  .bv-search-list { top: 46px; max-height: 46vh; }
  
  .bv-search.open ~ .bv-chip { display: none; }
  .bv-chip { top: 10px; left: 142px; right: 10px; max-width: none; }

  .bv-rail {
    top: auto; bottom: 10px; left: 10px; right: 10px;
    flex-direction: row; justify-content: center; align-items: center;
    gap: 3px; padding: 5px; border-radius: 14px; overflow-x: auto;
  }
  .bv-rail-group { flex-direction: row; gap: 3px; }
  .bv-rail-sep { height: 22px; width: 1px; margin: 0 4px; flex: none; }
  .bv-tog { width: 40px; height: 40px; flex: none; }

  .bv-ncard { left: 10px; right: 10px; bottom: 66px; width: auto; max-width: none; }
  .bv-pop { top: auto; bottom: 66px; right: 10px; left: 10px; width: auto; }

  .bv-progress-card { padding: 20px 26px; }
  .bv-ring, .bv-ring svg { width: 62px; height: 62px; }
}

@media (max-width: 430px) {
  .ws-tree-open .lbl { display: none; }
  .ws-tree-open { padding-left: 9px; padding-right: 9px; }

  .bv-rail { gap: 2px; padding: 4px; }
  .bv-rail-group { gap: 2px; }
  .bv-rail-sep { margin: 0 2px; }
  .bv-tog { width: 34px; height: 34px; }
  .bv-tog svg { width: 17px; height: 17px; }
}
@media (max-width: 380px) {
  .bv-model { display: none; }
  .bv-tog { width: 33px; height: 33px; }
}

.ws-tabs {
  position: absolute; top: 10px; left: 10px; right: 66px; z-index: 26;
  display: flex; gap: 5px; overflow-x: auto; overflow-y: hidden;
  scrollbar-width: none; padding-bottom: 2px;
}
.ws-tabs::-webkit-scrollbar { display: none; }

.ws-tabs { pointer-events: none; }
.ws-tabs > * { pointer-events: auto; }
.ws-tab {
  
  display: inline-flex; align-items: center; gap: 7px; flex: 0 0 auto; width: auto; min-width: 150px; max-width: 340px;
  height: 36px; padding: 0 8px 0 11px; border-radius: 10px; cursor: pointer;
  background: rgba(13, 20, 34, .82); border: 1px solid rgba(255, 255, 255, .12); color: #93A3BF;
  backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 10px 28px -14px rgba(4, 10, 22, .8);
  font: inherit; font-size: 12.5px; transition: color .14s, border-color .14s;
}
.ws-tab:hover { color: #E7ECF6; }
.ws-tab.on { color: #E7ECF6; border-color: color-mix(in srgb, #14C8E6 45%, transparent); }
.ws-tab.on .ws-tab-t { font-weight: 600; }
.ws-tab.on::after { content: ''; position: absolute; }
.ws-tab-ic { font-size: 12px; line-height: 1; flex: none; }
.ws-tab-t { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ws-tab-x { flex: none; width: 20px; height: 20px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 10px; color: #93A3BF; }
.ws-tab-x:hover { background: rgba(255, 255, 255, .16); color: #E7ECF6; }

.viewer-stage.has-tabs .bv-chip { display: none; }

.viewer-stage.has-tabs .bv-search { top: 56px; }

@media (max-width: 860px) {
  .ws-tabs { top: 10px; left: 142px; right: 10px; gap: 5px; }
  
  .ws-tab { flex: 1 1 0; width: auto; min-width: 0; padding: 0 6px 0 9px; gap: 5px; font-size: 12px; }
  .ws-tab.on { flex: 1.55 1 0; }
  .ws-tab:not(.on) .ws-tab-x { display: none; }
  
  .viewer-stage.has-tabs .bv-search { top: 56px; left: 10px; right: 10px; }
  .viewer-stage.has-tabs .bv-search-list { max-height: 40vh; }
}
@media (max-width: 430px) {
  .ws-tabs { left: 62px; }         
}

.bv-nc-copy { cursor: pointer; }
.bv-nc-copy:hover { color: var(--accent); }
.bv-nc-copy.copied { color: var(--accent); }

@media (max-width: 860px) {
  .bv-ncard { top: 62px; bottom: auto; left: 10px; right: 10px; }
  .viewer-stage.has-tabs .bv-search.open ~ .bv-ncard { top: 62px; }
}

.bv-path {
  position: absolute; left: 12px; bottom: 12px; z-index: 15; max-width: min(60%, 620px);
  display: flex; align-items: center; gap: 7px;
  background: var(--glass); border: 1px solid var(--glass-line); color: var(--glass-muted);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  font-family: var(--font-mono); font-size: 11px; padding: 6px 12px; border-radius: 999px;
  pointer-events: none; white-space: nowrap; overflow: hidden;
}
.bv-path span { min-width: 0; overflow: hidden; text-overflow: ellipsis; flex: none; }
.bv-path span.file { flex: 0 1 auto; }        
.bv-path span.tail { color: var(--glass-ink); }

.bv-path span.comp { color: var(--glass-ink); font-weight: 600; }
.bv-path span.net { color: var(--accent); flex: 0 1 auto; }
.bv-path i { font-style: normal; flex: none; opacity: .4; }

@media (max-width: 720px) {
  .bv-path { bottom: 62px; left: 10px; right: 10px; max-width: none; }
}

.bv-scroll {
  position: absolute; right: 5px; top: 12px; bottom: 12px; width: 11px; z-index: 19;
  border-radius: 999px; background: color-mix(in srgb, var(--glass) 55%, transparent);
  border: 1px solid var(--glass-line); touch-action: none; cursor: pointer;
}
.bv-scroll-thumb {
  position: absolute; left: 2px; right: 2px; min-height: 26px; border-radius: 999px;
  background: color-mix(in srgb, var(--glass-muted) 65%, transparent); cursor: grab;
  transition: background .14s;
}
.bv-scroll-thumb:hover, .bv-scroll-thumb:active { background: var(--accent); }
.bv-root.has-scroll .bv-rail { right: 24px; }
.bv-root.has-scroll .bv-ncard { right: 86px; }
.bv-root.has-scroll .bv-menu { right: 86px; }   

.viewer-stage { --split: 50%; }
.viewer-stage.is-split .board-host.pane-a { right: calc(100% - var(--split)); }
.viewer-stage.is-split .board-host.pane-b { left: var(--split); }
.viewer-stage.is-split .ws-tabs { right: calc(100% - var(--split) + 10px); }
.viewer-stage.is-split .pane-b .bv-chip { display: flex; }
.viewer-stage.is-split .bv-path { max-width: calc(100% - 24px); }
.ws-split {
  position: absolute; top: 0; bottom: 0; left: var(--split); width: 12px; margin-left: -6px;
  z-index: 27; cursor: col-resize; touch-action: none;
}

.ws-split::before {
  content: ''; position: absolute; left: 5px; top: 0; bottom: 0; width: 2px;
  background: var(--line-2);
}
.ws-split::after {
  content: ''; position: absolute; left: 0; top: 50%; width: 12px; height: 46px; margin-top: -23px;
  border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line-2);
  box-shadow: var(--shadow);
}
.ws-split:hover::before, .ws-split:active::before { background: var(--cyan, #14C8E6); }

@media (max-width: 860px) {
  .viewer-stage.is-split .board-host.pane-a { right: 0; bottom: calc(100% - var(--split)); }
  .viewer-stage.is-split .board-host.pane-b { left: 0; top: var(--split); }
  .viewer-stage.is-split .ws-tabs { right: 66px; }
  .ws-split {
    left: 0; right: 0; width: auto; margin-left: 0;
    top: var(--split); height: 14px; margin-top: -7px; cursor: row-resize;
  }
  .ws-split::before { left: 0; right: 0; top: 6px; bottom: auto; width: auto; height: 2px; }
  .ws-split::after { left: 50%; top: 1px; margin: 0 0 0 -23px; width: 46px; height: 12px; }
  
  .bv-scroll { top: 56px; bottom: 62px; }
}

@media (min-width: 861px) {
  .viewer-stage.is-split .bv-ncard { top: 56px; right: auto; left: 10px; width: min(260px, 62%); }
  .viewer-stage.is-split .bv-root.has-card .bv-search { width: min(300px, 40%); }
}

.bv-menu {
  position: absolute; top: 12px; right: 74px; z-index: 27; width: 300px; cursor: default; max-height: calc(100% - 24px); overflow-y: auto;
  background: var(--glass); border: 1px solid var(--glass-line); border-radius: 14px;
  backdrop-filter: blur(18px) saturate(1.4); -webkit-backdrop-filter: blur(18px) saturate(1.4);
  box-shadow: 0 28px 56px -22px rgba(4, 10, 22, .9);
  animation: bvMenuIn .17s cubic-bezier(.2, .8, .2, 1) both;
}
@keyframes bvMenuIn { from { opacity: 0; transform: translateX(10px) scale(.97); } to { opacity: 1; transform: none; } }

.bv-menu.sub-open .bv-menu-main { display: none; }
.bv-menu .bv-pop { position: static; width: auto; border: 0; border-radius: 0; background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; animation: bvPageIn .16s ease both; }
@keyframes bvPageIn { from { opacity: 0; transform: translateX(8px); } to { opacity: 1; transform: none; } }
.bv-back { width: 28px; height: 28px; margin: -2px 2px -2px -6px; border: 0; border-radius: 8px; background: transparent; color: var(--glass-ink); font-size: 22px; line-height: 1; cursor: pointer; display: grid; place-items: center; }
.bv-back:hover { background: rgba(255,255,255,.09); }
.bv-menu .bv-pop-head { justify-content: flex-start; }
.bv-menu-main .bv-pop-head { justify-content: space-between; }

.bv-link { display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; padding: 9px 10px; border-radius: 11px; border: 1px solid var(--glass-line); background: rgba(255,255,255,.035); cursor: pointer; font: inherit; color: var(--glass-ink); transition: background .14s; }
.bv-link:hover { background: rgba(255,255,255,.07); }
.bv-chev { flex: none; font-size: 20px; line-height: 1; color: var(--glass-muted); }

.bv-field { display: flex; flex-direction: column; gap: 6px; }
.bv-field-l { font-size: 12px; font-weight: 600; color: var(--glass-ink); padding-left: 2px; }

.bv-root.menu-open .bv-pop { right: 318px; }

@media (max-width: 720px) {
  
  .bv-menu { top: auto; bottom: 62px; left: 10px; right: 10px; width: auto; }
  @keyframes bvMenuIn { from { opacity: 0; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }
  .bv-root.menu-open .bv-pop { right: 10px; left: 10px; bottom: auto; top: 62px; }
}

@media (max-width: 860px) {
  .has-open-file .ws-tabs { top: 0; left: 138px; right: 0; gap: 4px; }
  .has-open-file .ws-tab { border-radius: 0 0 11px 11px; }
  .has-open-file .viewer-stage.has-tabs .bv-search { top: 46px; }
  .has-open-file .bv-rail {
    left: 0; right: 0; bottom: 0; border-radius: 14px 14px 0 0;
    padding-bottom: max(5px, env(safe-area-inset-bottom));
  }
  .has-open-file .bv-path { bottom: 58px; }
  .has-open-file .bv-pop { bottom: 58px; }
  .has-open-file .bv-scroll { top: 46px; bottom: 58px; }
}
@media (max-width: 430px) {
  .has-open-file .ws-tabs { left: 46px; }   
}

:root[data-theme="light"] .bv-root {
  --glass: rgba(255, 255, 255, .88);
  --glass-line: rgba(11, 22, 51, .12);
  --glass-ink: #0B1633;
  --glass-muted: #5A6A88;
  --accent: #0A9CC4;
}
:root[data-theme="light"] .bv-chip, :root[data-theme="light"] .bv-rail, :root[data-theme="light"] .bv-path, :root[data-theme="light"] .bv-search input, :root[data-theme="light"] .ws-tab { box-shadow: 0 10px 26px -14px rgba(11, 22, 51, .45); }
:root[data-theme="light"] .bv-pop, :root[data-theme="light"] .bv-menu, :root[data-theme="light"] .bv-ncard, :root[data-theme="light"] .bv-search-list, :root[data-theme="light"] .bv-progress-card { box-shadow: 0 22px 44px -20px rgba(11, 22, 51, .5); }
:root[data-theme="light"] .bv-tog:hover, :root[data-theme="light"] .bv-menu-row:hover, :root[data-theme="light"] .bv-search-list button:hover { background: rgba(11, 22, 51, .06); }
:root[data-theme="light"] .bv-pop-tabs { background: rgba(11, 22, 51, .06); }
:root[data-theme="light"] .bv-seg, :root[data-theme="light"] .bv-opt, :root[data-theme="light"] .bv-custom, :root[data-theme="light"] .bv-opt-ic { background: rgba(11, 22, 51, .04); }
:root[data-theme="light"] .bv-switch { background: rgba(11, 22, 51, .16); }
:root[data-theme="light"] .bv-link { background: rgba(11, 22, 51, .04); } :root[data-theme="light"] .bv-link:hover, :root[data-theme="light"] .bv-back:hover { background: rgba(11, 22, 51, .07); }
:root[data-theme="light"] .bv-opt.on { background: color-mix(in srgb, var(--accent) 10%, transparent); } :root[data-theme="light"] .bv-opt.on .bv-switch { background: var(--accent); } :root[data-theme="light"] .bv-opt.on .bv-opt-ic { background: color-mix(in srgb, var(--accent) 20%, transparent); } :root[data-theme="light"] .bv-pop-x:hover, :root[data-theme="light"] .bv-opt:hover { background: rgba(11, 22, 51, .06); }
:root[data-theme="light"] .bv-pop-full, :root[data-theme="light"] .bv-cpick { background: rgba(11, 22, 51, .03); }
:root[data-theme="light"] .bv-ncard-x { background: rgba(11, 22, 51, .06); }
:root[data-theme="light"] .bv-ncard-x:hover { background: rgba(11, 22, 51, .12); }
:root[data-theme="light"] .bv-ring .bg { stroke: rgba(11, 22, 51, .12); }
:root[data-theme="light"] .ws-tab { background: rgba(255, 255, 255, .88); border-color: rgba(11, 22, 51, .12); color: #5A6A88; }
:root[data-theme="light"] .ws-tab:hover, :root[data-theme="light"] .ws-tab.on { color: #0B1633; }
:root[data-theme="light"] .ws-tab.on { border-color: color-mix(in srgb, #0A9CC4 55%, transparent); background: #fff; }
:root[data-theme="light"] .ws-tab-x { color: #5A6A88; }
:root[data-theme="light"] .ws-tab-x:hover { background: rgba(11, 22, 51, .08); color: #0B1633; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .bv-root {
    --glass: rgba(255, 255, 255, .88);
    --glass-line: rgba(11, 22, 51, .12);
    --glass-ink: #0B1633;
    --glass-muted: #5A6A88;
    --accent: #0A9CC4;
  }
  :root:not([data-theme="dark"]) .bv-chip, :root:not([data-theme="dark"]) .bv-rail, :root:not([data-theme="dark"]) .bv-path, :root:not([data-theme="dark"]) .bv-search input, :root:not([data-theme="dark"]) .ws-tab { box-shadow: 0 10px 26px -14px rgba(11, 22, 51, .45); }
  :root:not([data-theme="dark"]) .bv-pop, :root:not([data-theme="dark"]) .bv-menu, :root:not([data-theme="dark"]) .bv-ncard, :root:not([data-theme="dark"]) .bv-search-list, :root:not([data-theme="dark"]) .bv-progress-card { box-shadow: 0 22px 44px -20px rgba(11, 22, 51, .5); }
  :root:not([data-theme="dark"]) .bv-tog:hover, :root:not([data-theme="dark"]) .bv-menu-row:hover, :root:not([data-theme="dark"]) .bv-search-list button:hover { background: rgba(11, 22, 51, .06); }
  :root:not([data-theme="dark"]) .bv-pop-tabs { background: rgba(11, 22, 51, .06); }
  :root:not([data-theme="dark"]) .bv-seg, :root:not([data-theme="dark"]) .bv-opt, :root:not([data-theme="dark"]) .bv-custom, :root:not([data-theme="dark"]) .bv-opt-ic { background: rgba(11, 22, 51, .04); }
  :root:not([data-theme="dark"]) .bv-switch { background: rgba(11, 22, 51, .16); }
  :root:not([data-theme="dark"]) .bv-link { background: rgba(11, 22, 51, .04); } :root:not([data-theme="dark"]) .bv-link:hover, :root:not([data-theme="dark"]) .bv-back:hover { background: rgba(11, 22, 51, .07); }
  :root:not([data-theme="dark"]) .bv-opt.on { background: color-mix(in srgb, var(--accent) 10%, transparent); } :root:not([data-theme="dark"]) .bv-opt.on .bv-switch { background: var(--accent); } :root:not([data-theme="dark"]) .bv-opt.on .bv-opt-ic { background: color-mix(in srgb, var(--accent) 20%, transparent); } :root:not([data-theme="dark"]) .bv-pop-x:hover, :root:not([data-theme="dark"]) .bv-opt:hover { background: rgba(11, 22, 51, .06); }
  :root:not([data-theme="dark"]) .bv-pop-full, :root:not([data-theme="dark"]) .bv-cpick { background: rgba(11, 22, 51, .03); }
  :root:not([data-theme="dark"]) .bv-ncard-x { background: rgba(11, 22, 51, .06); }
  :root:not([data-theme="dark"]) .bv-ncard-x:hover { background: rgba(11, 22, 51, .12); }
  :root:not([data-theme="dark"]) .bv-ring .bg { stroke: rgba(11, 22, 51, .12); }
  :root:not([data-theme="dark"]) .ws-tab { background: rgba(255, 255, 255, .88); border-color: rgba(11, 22, 51, .12); color: #5A6A88; }
  :root:not([data-theme="dark"]) .ws-tab:hover, :root:not([data-theme="dark"]) .ws-tab.on { color: #0B1633; }
  :root:not([data-theme="dark"]) .ws-tab.on { border-color: color-mix(in srgb, #0A9CC4 55%, transparent); background: #fff; }
  :root:not([data-theme="dark"]) .ws-tab-x { color: #5A6A88; }
  :root:not([data-theme="dark"]) .ws-tab-x:hover { background: rgba(11, 22, 51, .08); color: #0B1633; }
}

.bv-tog { position: relative; }
.bv-tog-badge { position: absolute; right: -5px; bottom: -5px; min-width: 22px; padding: 1px 4px; border-radius: 999px; background: var(--accent); color: #04121A; font: 700 9.5px/1.4 var(--font-mono, monospace); text-align: center; box-shadow: 0 2px 6px -2px rgba(0,0,0,.5); pointer-events: none; }