.floating-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    z-index: 1000; /* 确保按钮在其他内容之上 */
}

/* ===== 移动端导航菜单 ===== */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    flex-shrink: 0;
    margin-left: 12px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    cursor: pointer;
}

.nav-hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #fff;
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav-panel {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.96);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.5);
}

.mobile-nav-panel.open {
    display: block;
}

.mobile-nav-panel a {
    display: block;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 500;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    -webkit-tap-highlight-color: transparent;
}

.mobile-nav-panel a.bg-gold {
    margin: 12px 24px;
    padding: 10px 0;
    text-align: center;
    border-radius: 9999px;
    border-top: none;
    font-weight: 700;
}

@media (max-width: 767.98px) {
    .nav-hamburger {
        display: flex;
    }
}

@media (min-width: 768px) {
    .nav-hamburger {
        display: none !important;
    }

    .mobile-nav-panel {
        display: none !important;
    }
}

@media (max-width: 420px) {
    nav span.text-2xl {
        font-size: 1.15rem;
    }
}