.tb{z-index:20;background:color-mix(in srgb, var(--background) 88%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);will-change:transform;transition:transform .25s;position:sticky;top:0}.tb--hidden{transform:translateY(-100%)}.tb-inner{justify-content:space-between;align-items:center;gap:16px;max-width:1000px;margin:0 auto;padding:10px 20px;display:flex}.tb-logo{align-items:center;min-width:0;display:inline-flex}.tb-logo-img{object-fit:contain;width:auto;height:40px;display:block}.tb-right{flex:none;align-items:center;gap:14px;display:flex}@media (max-width:480px){.tb-inner{gap:10px;padding:10px 14px}.tb-logo-img{height:32px}.tb-right{gap:10px}}.tb-lang{border:1px solid var(--border);border-radius:8px;align-items:stretch;font-size:.82rem;font-weight:700;display:inline-flex;overflow:hidden}.tb-lang-btn{color:var(--muted-foreground);background:var(--card);font:inherit;cursor:pointer;border:none;padding:5px 11px;font-weight:700;line-height:1;transition:background .15s,color .15s}.tb-lang-btn+.tb-lang-btn{border-left:1px solid var(--border)}.tb-lang-btn:hover:not(.active){background:var(--muted);color:var(--foreground)}.tb-lang-btn.active{background:var(--accent-green);color:#fff}.tb-icon-btn{border:1px solid var(--border);background:var(--card);width:36px;height:36px;color:var(--foreground);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;transition:border-color .15s;display:inline-flex}.tb-icon-btn:hover{border-color:var(--accent-green)}.tb-totop{right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:30;border:1px solid var(--border);background:var(--card);width:44px;height:44px;color:var(--foreground);cursor:pointer;opacity:0;pointer-events:none;border-radius:999px;justify-content:center;align-items:center;transition:opacity .2s,transform .2s,border-color .15s,color .15s;display:inline-flex;position:fixed;transform:translateY(12px);box-shadow:0 4px 14px #0000002e}.tb-totop--show{opacity:1;pointer-events:auto;transform:translateY(0)}.tb-totop:hover{border-color:var(--accent-green);color:var(--accent-green)}