/* Horror is spatial: the hand crosses the page, TV snow cuts through the signal. */
#hd .hdc[data-bian-member="1"]{background-image:url(analog-tape-observed.webp)!important}
.bian-edge-presence{position:fixed;top:53vh;width:clamp(320px,23vw,470px);height:auto;z-index:20;pointer-events:none;user-select:none;opacity:0;transform:translateY(-50%) scaleX(-1);filter:none;border:0;outline:0;box-shadow:none;will-change:transform,opacity;max-width:none}
.bian-edge-presence[hidden]{display:none}
.bian-idle-blood{position:fixed;inset:0;width:100%;height:100%;z-index:99980;pointer-events:none;user-select:none}
.bian-idle-blood[hidden]{display:none}
#hd #um,#hd #lsform{position:relative;z-index:2}
/* Let Discuz pin the complete native nav; its measured width includes padding. */
#hd .bian-nav-row #nv{box-sizing:border-box;height:40px!important;opacity:1!important;position:relative;overflow:visible;background-color:#080707}
#hd .bian-nav-row #nv:not([style*="position: fixed"]){left:0!important;top:0!important;width:100%!important}
#hd .bian-nav-row{padding-bottom:0}
#hd .bian-nav-search{z-index:1}
@media(max-width:700px){#hd .bian-nav-row #nv{height:80px!important}}
/* Account links stay embedded in the original damaged header, without a separate card. */
#hd #um{margin-top:28px;margin-right:16px;padding:8px 0 10px 6px;width:calc(100% - 396px);grid-template-columns:minmax(0,1fr) 54px;column-gap:14px;background:none;border:0;box-shadow:none;text-shadow:0 1px 2px #000,1px 0 3px #000,-1px 0 3px #000}
#hd #um:before,#hd #um:after,#hd #um .avt:after{content:none}
#hd #um p{line-height:2.2}
#hd #um p:last-child{font-size:12px;color:#b1a79c}
#hd #um .vwmy{font:bold 14px/2.2 SimSun,serif;letter-spacing:0}
#hd #um .vwmy a{color:#eee6da}
#hd #um .pipe{color:#817468}
#hd #um .avt{transform:none;width:54px;margin-top:2px}
#hd #um .avt img{width:54px;height:54px;object-fit:cover;padding:2px;background:#080808;border:1px solid #6a5548;border-radius:0;box-shadow:none;filter:none}
#hd #um a:hover{color:#fff4e5;text-decoration:underline;text-underline-offset:3px}
.bian-theme-switch .bian-signal-toggle{margin-right:auto;order:-1;color:#bca89b;border-color:#4a312c;padding:3px 8px;background:#100907}
.bian-signal-toggle:focus-visible{outline:2px solid #f3d5c6;outline-offset:2px}
.bian-signal-rupture{position:fixed;inset:0;width:100%;height:100%;z-index:21;pointer-events:none;visibility:hidden;image-rendering:pixelated}
html.bian-signal-break .bian-signal-rupture{animation:bian-tv-snow 1100ms steps(1,end)}
@keyframes bian-tv-snow{0%,16%{visibility:visible;transform:translateY(-3px)}20%,67%{visibility:hidden}73%,87%{visibility:visible;transform:translateY(21px) scaleX(-1)}100%{visibility:hidden}}
@media(max-width:1099px){.bian-edge-presence{display:none}}
@media(prefers-reduced-motion:reduce){.bian-edge-presence{will-change:auto}html.bian-signal-break .bian-signal-rupture{animation:none}}