/* ========== 右侧悬浮联系按钮 ========== */
.floating-contact-btn {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 8px;
    background: linear-gradient(180deg, #8B1A2B 0%, #5C0F1A 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 12px 0 0 12px;
    box-shadow: -4px 0 20px rgba(139, 26, 43, 0.35);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    writing-mode: horizontal-tb;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    animation: floatPulse 3s ease-in-out infinite;
}

.floating-contact-btn:hover {
    padding-right: 14px;
    box-shadow: -6px 0 28px rgba(139, 26, 43, 0.5);
    transform: translateY(-50%) scale(1.05);
    animation: none;
}

.floating-contact-btn .float-icon {
    font-size: 1.4rem;
    line-height: 1;
    animation: iconBounce 2s ease-in-out infinite;
}

.floating-contact-btn .float-text {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 1px;
    line-height: 1.5;
    text-align: center;
}

@keyframes floatPulse {
    0%, 100% {
        box-shadow: -4px 0 20px rgba(139, 26, 43, 0.35);
    }
    50% {
        box-shadow: -4px 0 30px rgba(139, 26, 43, 0.55);
    }
}

@keyframes iconBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .floating-contact-btn {
        right: 4px;
        top: auto;
        bottom: 80px;
        transform: none;
        padding: 10px 6px;
        border-radius: 10px 0 0 10px;
        gap: 4px;
    }
    .floating-contact-btn:hover {
        transform: scale(1.05);
    }
    .floating-contact-btn .float-icon {
        font-size: 1.2rem;
    }
    .floating-contact-btn .float-text {
        font-size: 0.7rem;
        letter-spacing: 0.5px;
    }
}

@media (max-width: 480px) {
    .floating-contact-btn {
        right: 2px;
        bottom: 70px;
        padding: 8px 4px;
        border-radius: 8px 0 0 8px;
    }
    .floating-contact-btn .float-icon {
        font-size: 1rem;
    }
    .floating-contact-btn .float-text {
        font-size: 0.65rem;
    }
}