.wt-toolbar{--wt-radius: 14px;--wt-pad: 4px;--wt-gap: 4px;--wt-ink: #1f2a37;--wt-accent: #0b6b74;--wt-active-bg: #d9f1f4;--wt-hover-bg: #eef6f8;--wt-press-bg: #e3f0f3;--wt-border: #c9d8de;position:fixed;left:50%;bottom:8px;z-index:10;transform:translate(-50%);display:flex;align-items:center;gap:var(--wt-gap);box-sizing:border-box;padding:var(--wt-pad) var(--wt-pad) calc(var(--wt-pad) + env(safe-area-inset-bottom));background-color:#ffffffeb;border:1px solid var(--wt-border);border-radius:var(--wt-radius);box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;color:var(--wt-ink);color-scheme:light;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;overscroll-behavior:contain}.wt-btn{-webkit-appearance:none;appearance:none;box-sizing:border-box;margin:0;padding:0;width:44px;height:44px;min-width:44px;min-height:44px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:calc(var(--wt-radius) - var(--wt-pad));background-color:transparent;color:var(--wt-ink);font:inherit;cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;transition:background-color .12s ease}.wt-btn svg{display:block;width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.wt-btn:active{background-color:var(--wt-press-bg)}@media (hover: hover){.wt-btn:hover{background-color:var(--wt-hover-bg)}}.wt-btn.is-active,.wt-btn.is-active:hover,.wt-btn.is-active:active{background-color:var(--wt-active-bg);color:var(--wt-accent)}.wt-sound{margin-left:12px}.wt-btn:focus-visible{outline:2px solid var(--wt-accent);outline-offset:1px}@media (orientation: landscape) and (max-height: 500px){.wt-toolbar{--wt-pad: 2px;--wt-gap: 2px;bottom:4px}.wt-sound{margin-left:8px}}@media (prefers-reduced-motion: reduce){.wt-btn{transition:none}}