.c-tooltip {
    position: absolute;
    background: #2c3e50;
    color: white;
    padding: 10px 15px;
    border-radius: 6px;
    font-size: 1.5rem;
    font-weight: bold;
    max-width: 250px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.c-tooltip.visible {
    opacity: 1;
    visibility: visible;
}

.c-tooltip::after {
    content: '';
    position: absolute;
    border-width: 6px;
    border-style: solid;
}

/* 位置样式 */
.c-tooltip.top::after {
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-color: #2c3e50 transparent transparent transparent;
}

.c-tooltip.bottom::after {
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-color: transparent transparent #2c3e50 transparent;
}

.c-tooltip.left::after {
    top: 50%;
    left: 100%;
    transform: translateY(-50%);
    border-color: transparent transparent transparent #2c3e50;
}

.c-tooltip.right::after {
    top: 50%;
    right: 100%;
    transform: translateY(-50%);
    border-color: transparent #2c3e50 transparent transparent;
}

.c-tooltip.top-left::after {
    top: 100%;
    left: 10%;
    border-color: #2c3e50 transparent transparent transparent;
}

.c-tooltip.top-right::after {
    top: 100%;
    right: 10%;
    border-color: #2c3e50 transparent transparent transparent;
}

.c-tooltip.bottom-left::after {
    bottom: 100%;
    left: 10%;
    border-color: transparent transparent #2c3e50 transparent;
}

.c-tooltip.bottom-right::after {
    bottom: 100%;
    right: 10%;
    border-color: transparent transparent #2c3e50 transparent;
}