:root{--bio-navy:#06254e;--bio-accent:#fc1044;--bio-bg:var(--bio-fb-bg,#eef2f7);color-scheme:light}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--bio-bg);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-text-size-adjust:100%}
body{overscroll-behavior:none}
.bio-viewer{width:100%;height:100%;display:flex;flex-direction:column;background:var(--bio-bg)}
.bio-toolbar{height:40px;flex:0 0 40px;background:var(--bio-navy);display:flex;align-items:center;justify-content:space-between;padding:0 7px;gap:6px}
.bio-group{display:flex;align-items:center;gap:5px;min-width:0}
.bio-btn{width:30px;height:30px;padding:0;border:1px solid rgba(255,255,255,.12);border-radius:7px;background:#fff;color:var(--bio-navy);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;text-decoration:none;-webkit-tap-highlight-color:transparent;touch-action:manipulation}
.bio-btn:hover{transform:translateY(-1px)}
.bio-btn:disabled{opacity:.42;cursor:default;transform:none}
.bio-btn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.35;stroke-linecap:round;stroke-linejoin:round}
.bio-counter{color:#fff;font-size:14px;line-height:1;font-weight:800;white-space:nowrap;padding:0 4px}
.bio-stage{position:relative;min-height:0;flex:1;width:100%;overflow:hidden;background:var(--bio-bg);outline:0;overscroll-behavior:none}
.bio-desktop-native,.bio-mobile-book{position:absolute;inset:0}
.bio-desktop-native{display:block;background:var(--bio-bg)}
.bio-desktop-native iframe{display:block;width:100%;height:100%;border:0;background:var(--bio-bg)}
.bio-mobile-book{display:none;align-items:center;justify-content:center;overflow:hidden;perspective:1700px;touch-action:pan-y pinch-zoom;-webkit-user-select:none;user-select:none}
.bio-page{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;backface-visibility:hidden;transform-style:preserve-3d;padding:0}
.bio-page.current{opacity:1;z-index:3}
.bio-page.incoming{opacity:1;z-index:2}
.bio-page img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center center;background:#fff;pointer-events:none;user-select:none;-webkit-user-drag:none}
.bio-page.turn-next{z-index:5;transform-origin:left center;animation:bioTurnNext .27s cubic-bezier(.55,.06,.68,.19) forwards}
.bio-page.turn-prev{z-index:5;transform-origin:right center;animation:bioTurnPrev .27s cubic-bezier(.55,.06,.68,.19) forwards}
@keyframes bioTurnNext{0%{transform:rotateY(0);opacity:1}72%{opacity:.78}100%{transform:rotateY(-72deg);opacity:0}}
@keyframes bioTurnPrev{0%{transform:rotateY(0);opacity:1}72%{opacity:.78}100%{transform:rotateY(72deg);opacity:0}}
.bio-stage.bio-native-flash::after{content:"";position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none;animation:bioNativeFlash .18s ease-out}
@keyframes bioNativeFlash{0%{opacity:.18}100%{opacity:0}}
.bio-loading{position:absolute;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;background:rgba(238,242,247,.94);color:#263a56;text-align:center;padding:18px}
.bio-loading[hidden]{display:none}
.bio-spinner{width:32px;height:32px;border:4px solid #ccdaec;border-top-color:#204d95;border-radius:50%;animation:bioSpin .8s linear infinite}
@keyframes bioSpin{to{transform:rotate(360deg)}}
.bio-loading strong{font-size:14px}
.bio-error{position:absolute;inset:0;z-index:25;display:none;align-items:center;justify-content:center;flex-direction:column;gap:10px;background:var(--bio-bg);padding:20px;text-align:center;color:#263a56}
.bio-error.show{display:flex}.bio-error strong{font-size:16px}.bio-error p{margin:0;max-width:420px;font-size:13px;line-height:1.5}
.bio-error-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.bio-action{display:inline-flex;align-items:center;gap:6px;border:0;border-radius:8px;padding:9px 11px;background:var(--bio-navy);color:#fff;font-weight:750;text-decoration:none;cursor:pointer;font-size:13px}.bio-action svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.bio-pseudo-full{position:fixed!important;inset:0!important;z-index:2147483646!important;background:var(--bio-bg)!important}
.bio-is-mobile .bio-desktop-native{display:none}.bio-is-mobile .bio-mobile-book{display:flex;padding:2px}.bio-is-mobile .bio-page{padding:2px}.bio-is-mobile .bio-page img{max-width:calc(100% - 4px);max-height:calc(100% - 4px)}

@media(max-width:767px){
  .bio-toolbar{height:38px;flex-basis:38px;padding:0 max(5px,env(safe-area-inset-right)) 0 max(5px,env(safe-area-inset-left));gap:4px}
  .bio-group{gap:4px}.bio-btn{width:28px;height:28px;border-radius:6px}.bio-btn svg{width:13px;height:13px}.bio-counter{font-size:13px;padding:0 2px}
  .bio-desktop-native{display:none}.bio-mobile-book{display:flex;padding:2px}
  .bio-page{padding:2px}.bio-page img{max-width:calc(100% - 4px);max-height:calc(100% - 4px)}
  .bio-spinner{width:30px;height:30px;border-width:4px}.bio-loading strong{font-size:14px}
}
@media(max-width:360px){.bio-btn{width:27px;height:27px}.bio-counter{font-size:12px}}