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var(--rule);background:var(--sheet);cursor:pointer;border-radius:999px;min-width:40px;min-height:36px}.fb .graphcanvas{background:var(--paper);height:clamp(420px,68vh,680px);position:relative}.fb .graphcanvas .ex-canvas{position:absolute;inset:0}.fb .graphhint{border-top:1px solid var(--rule);padding:.5rem .9rem .7rem}.fb .cta{font-weight:600}