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92%,transparent);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:18px;padding:12px 14px;box-shadow:0 16px 36px #0000001f,0 4px 12px #0000000d;opacity:0;pointer-events:none;transition:opacity .28s cubic-bezier(.22,1,.36,1),transform .28s cubic-bezier(.22,1,.36,1);display:flex;flex-direction:column;gap:8px}.feline-spine:hover .spine-context-card,.spine-context-card.active{opacity:1;pointer-events:auto;transform:translateY(-50%) translate(0)}.spine-nav-btn{border:0;background:transparent;padding:5px 8px;border-radius:8px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-size:11px;color:var(--color-text-sub);transition:background .15s,color 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