/* ========================================
   MageYun 云服务 全局样式表
   已清理所有冗余样式，修复所有定位问题
   ======================================== */
/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a {
    text-decoration: none;
    color: #333;
    transition: all 0.2s ease;
}
ul {
    list-style: none;
}
img {
    max-width: 100%;
    vertical-align: middle;
}
.container {
    width: 90%;
    max-width: 1400px;
    margin: 0 auto;
}
/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    outline: none;
    text-align: center;
}
.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}
.full-width {
    width: 100%;
    padding: 12px;
    font-size: 16px;
}
.primary-btn {
    background: #1677ff;
    color: #fff;
}
.primary-btn:hover {
    background: #4096ff;
}
.secondary-btn {
    border: 1px solid #1677ff;
    color: #1677ff;
    background: #fff;
}
.secondary-btn:hover {
    background: #e6f4ff;
}
/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    z-index: 999;
    height: 64px;
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo a {
    display: flex;
    align-items: center;
}
.logo i {
    font-size: 28px;
    color: #1677ff;
}
.logo span {
    font-size: 20px;
    font-weight: 600;
    color: #1677ff;
    margin-left: 8px;
}
.nav ul {
    display: flex;
    align-items: center;
}
.nav li {
    margin: 0 24px;
}
.nav a {
    font-size: 15px;
    color: #333;
    padding: 20px 0;
    border-bottom: 2px solid transparent;
}
.nav a:hover {
    color: #1677ff;
    border-bottom: 2px solid #1677ff;
}
.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
}
.login {
    border: 1px solid #1677ff;
    color: #1677ff;
    padding: 6px 16px;
    border-radius: 4px;
}
.login:hover {
    background: #e6f4ff;
}
.register {
    background: #1677ff;
    color: #fff;
    padding: 6px 16px;
    border-radius: 4px;
}
.register:hover {
    background: #4096ff;
}
.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
}
.username {
    color: #333;
    font-size: 14px;
}
.logout {
    background: #f5f5f5;
    color: #333;
    padding: 6px 12px;
    border-radius: 4px;
}
.logout:hover {
    background: #e8e8e8;
}
.mobile-menu-btn, .mobile-nav {
    display: none;
}
/* 页面通用标题 */
.page-title {
    margin-top: 64px;
    padding: 48px 0;
    background: linear-gradient(135deg, #1677ff 0%, #0958d9 100%);
    color: #fff;
    text-align: center;
}
.page-title h1 {
    font-size: 32px;
    margin-bottom: 12px;
    font-weight: 600;
}
.page-title p {
    font-size: 16px;
    opacity: 0.9;
}
/* ========================================
   价格页专属样式
   ======================================== */
.price-section {
    padding: 40px 0 120px;
    background: #f5f7fa;
    min-height: calc(100vh - 64px - 160px);
}
/* 地区选择器 */
.region-selector {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.region-selector h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}
.region-tabs {
    display: flex;
    margin-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}
.region-tab {
    padding: 10px 24px;
    background: transparent;
    border: none;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 2px solid transparent;
    color: #666;
}
.region-tab.active {
    color: #1677ff;
    border-bottom: 2px solid #1677ff;
    font-weight: 500;
}
.region-cities {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.city-btn {
    padding: 6px 16px;
    background: #f5f5f5;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    color: #333;
}
.city-btn.active {
    background: #1677ff;
    color: #fff;
}
.city-btn:hover {
    background: #e6f4ff;
    color: #1677ff;
}
.city-btn.active:hover {
    background: #4096ff;
    color: #fff;
}
/* 套餐列表 */
.package-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
    position: relative;
}

/* 加载状态样式 */
.loading-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    grid-column: 1 / -1;
}

.loading-state i {
    font-size: 36px;
    color: #1677ff;
    margin-bottom: 12px;
}

.loading-state p {
    font-size: 14px;
    margin: 0;
}

.no-data {
    text-align: center;
    padding: 60px 20px;
    color: #999;
    grid-column: 1 / -1;
    font-size: 14px;
}
.package-card {
    background: #fff;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}
.package-card:hover {
    border-color: #91caff;
    box-shadow: 0 6px 16px rgba(22, 119, 255, 0.15);
    transform: translateY(-2px);
}
.package-card.active {
    border-color: #1677ff;
    box-shadow: 0 6px 20px rgba(22, 119, 255, 0.2);
    background: linear-gradient(to bottom, #f0f7ff 0%, #fff 100%);
}
/* 系统标签 */
.os-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 13px;
    color: #fff;
    font-weight: 600;
}
.os-linux {
    background: #ff7d00;
}
.os-windows {
    background: #0078d7;
}
/* 套餐信息 */
.package-info {
    margin-bottom: 20px;
}
.package-info p {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.6;
    font-weight: 500;
}
.package-info p strong {
    color: #1677ff;
    font-weight: 600;
    min-width: 80px;
    display: inline-block;
}
/* 线路类型特殊样式 */
.package-info .line-type {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 14px;
    font-size: 15px;
    font-weight: 600;
}
.package-info .line-type strong {
    color: rgba(255, 255, 255, 0.95);
}
/* 流量和IP列表样式 */
.package-info ul {
    list-style: none;
    padding: 0;
    margin: 14px 0;
}
.package-info ul li {
    font-size: 15px;
    color: #555;
    padding: 8px 0;
    border-bottom: 1px dashed #e8e8e8;
}
.package-info ul li:last-child {
    border-bottom: none;
}
.package-info ul li i {
    margin-right: 8px;
    width: 20px;
    text-align: center;
}
/* 套餐价格 */
.package-price {
    text-align: center;
    padding-top: 16px;
    border-top: 2px solid #f0f0f0;
}
.current-price {
    font-size: 26px;
    font-weight: 700;
    color: #1677ff;
}
.original-price {
    font-size: 14px;
    color: #999;
    text-decoration: line-through;
    margin-left: 6px;
}
.unit {
    font-size: 15px;
    color: #666;
    margin-left: 4px;
}
/* 底部购买栏（已修复固定定位） */
.purchase-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.1);
    padding: 16px 0;
    z-index: 998;
}
.purchase-bar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.selected-info {
    font-size: 15px;
    color: #333;
}
.selected-info span {
    font-weight: 500;
    color: #1677ff;
}
.price-info {
    display: flex;
    align-items: center;
    gap: 20px;
}
.price-info .total-price {
    font-size: 24px;
    font-weight: 700;
    color: #ff4d4f;
}
/* ========================================
   登录注册页样式
   ======================================== */
.auth-section {
    padding: 80px 0;
    background: #f5f7fa;
    min-height: calc(100vh - 64px - 300px);
}
.auth-card {
    max-width: 420px;
    margin: 0 auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 40px;
}
.auth-card h2 {
    text-align: center;
    margin-bottom: 32px;
    color: #333;
    font-weight: 600;
    font-size: 24px;
}
.form-group {
    margin-bottom: 24px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}
.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}
.form-group input:focus {
    border-color: #1677ff;
    box-shadow: 0 0 0 2px rgba(22, 119, 255, 0.1);
}
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #666;
}
.checkbox-label input {
    width: auto;
    margin-right: 8px;
}
.auth-link {
    text-align: center;
    margin-top: 24px;
    color: #666;
    font-size: 14px;
}
.auth-link a {
    color: #1677ff;
}
/* ========================================
   控制台样式
   ======================================== */
.console-section {
    padding: 32px 0;
    margin-top: 64px;
    min-height: calc(100vh - 64px - 300px);
    background: #f5f7fa;
}
.console-section .container {
    display: flex;
    gap: 24px;
}
.console-sidebar {
    width: 220px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 16px 0;
    flex-shrink: 0;
}
.console-sidebar ul li {
    margin-bottom: 4px;
}
.console-sidebar ul li a {
    display: block;
    padding: 12px 24px;
    color: #333;
    transition: all 0.2s ease;
    font-size: 14px;
}
.console-sidebar ul li a:hover, .console-sidebar ul li.active a {
    background: #e6f4ff;
    color: #1677ff;
}
.console-sidebar ul li a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}
.console-content {
    flex: 1;
}
.console-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.console-header h2 {
    font-size: 22px;
    color: #333;
    font-weight: 600;
}
.instance-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 20px;
}
.instance-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
}
.instance-header {
    padding: 16px 20px;
    background: #fafafa;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #f0f0f0;
}
.instance-header h3 {
    font-size: 16px;
    color: #333;
    font-weight: 600;
}
.status {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}
.status.running {
    background: #e6f7ff;
    color: #1890ff;
}
.instance-info {
    padding: 20px;
}
.instance-info .info-item {
    display: flex;
    margin-bottom: 10px;
    font-size: 14px;
}
.instance-info .info-item label {
    width: 80px;
    color: #666;
    flex-shrink: 0;
}
.instance-info .info-item span {
    color: #333;
}
.instance-actions {
    padding: 16px 20px;
    border-top: 1px solid #f0f0f0;
    display: flex;
    gap: 10px;
}
.empty-state {
    text-align: center;
    padding: 100px 0;
    color: #666;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.empty-state i {
    color: #d9d9d9;
    margin-bottom: 24px;
    font-size: 64px;
}
.empty-state h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #333;
}
.empty-state p {
    margin-bottom: 32px;
    font-size: 14px;
}
/* ========================================
   个人中心样式
   ======================================== */
.user-center-section {
    padding: 32px 0;
    margin-top: 64px;
    min-height: calc(100vh - 64px - 300px);
    background: #f5f7fa;
}
.user-center-section .container {
    display: flex;
    gap: 24px;
}
.user-sidebar {
    width: 250px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
    flex-shrink: 0;
}
.user-profile {
    padding: 32px;
    text-align: center;
    background: linear-gradient(135deg, #1677ff 0%, #0958d9 100%);
    color: #fff;
}
.avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.avatar i {
    font-size: 36px;
    color: #fff;
}
.user-profile h3 {
    font-size: 18px;
    margin-bottom: 4px;
    font-weight: 600;
}
.user-profile p {
    font-size: 14px;
    opacity: 0.9;
}
.user-sidebar ul {
    padding: 12px 0;
}
.user-sidebar ul li {
    margin-bottom: 4px;
}
.user-sidebar ul li a {
    display: block;
    padding: 12px 32px;
    color: #333;
    transition: all 0.2s ease;
    font-size: 14px;
}
.user-sidebar ul li a:hover, .user-sidebar ul li.active a {
    background: #e6f4ff;
    color: #1677ff;
}
.user-sidebar ul li a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}
.user-content {
    flex: 1;
}
.user-content h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 24px;
    font-weight: 600;
}
.info-card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 32px;
}
.info-card .info-item {
    display: flex;
    padding: 16px 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
}
.info-card .info-item:last-child {
    border-bottom: none;
}
.info-card .info-item label {
    width: 120px;
    color: #666;
    font-weight: 500;
    flex-shrink: 0;
}
.info-card .info-item span {
    color: #333;
}
/* ========================================
   支付页样式
   ======================================== */
.payment-section {
    padding: 80px 0;
    background: #f5f7fa;
    min-height: calc(100vh - 64px - 300px);
}
.payment-card {
    max-width: 500px;
    margin: 0 auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    padding: 40px;
}
.payment-card h2 {
    text-align: center;
    margin-bottom: 32px;
    color: #333;
    font-weight: 600;
    font-size: 24px;
}
.order-info {
    background: #fafafa;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 32px;
}
.info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    color: #666;
    font-size: 14px;
}
.info-row.total {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #f0f0f0;
    font-size: 18px;
    font-weight: 700;
    color: #333;
}
.info-row.total span:last-child {
    color: #ff4d4f;
    font-size: 20px;
}
.payment-methods h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 20px;
    font-weight: 600;
}
.method-list {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}
.method-item {
    flex: 1;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}
.method-item.active {
    border-color: #1677ff;
    background: #e6f4ff;
}
.method-item input {
    display: none;
}
.method-item i {
    font-size: 36px;
    margin-bottom: 12px;
}
.method-item .fa-alipay {
    color: #1677ff;
}
.method-item .fa-weixin {
    color: #07c160;
}
/* ========================================
   页脚样式
   ======================================== */
.footer {
    background: #1f2329;
    color: #fff;
    padding: 60px 0 20px;
}
.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 40px;
}
.footer-logo {
    display: flex;
    align-items: center;
}
.footer-logo i {
    font-size: 28px;
    color: #fff;
}
.footer-logo span {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    margin-left: 8px;
}
.footer-links {
    display: flex;
    gap: 80px;
    flex-wrap: wrap;
}
.link-group h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 600;
}
.link-group ul li {
    margin-bottom: 12px;
}
.link-group ul li a {
    color: #a9a9a9;
    font-size: 14px;
}
.link-group ul li a:hover {
    color: #1677ff;
}
.link-group ul li i {
    margin-right: 8px;
    color: #1677ff;
}
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #30363d;
    font-size: 14px;
    color: #8b949e;
}
/* ========================================
   回到顶部按钮
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 30px;
    width: 40px;
    height: 40px;
    background: #1677ff;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: #4096ff;
}
/* ========================================
   响应式适配
   ======================================== */
@media (max-width: 768px) {
    .nav, .nav-btn, .user-info {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
        font-size: 24px;
        color: #333;
        cursor: pointer;
    }
    .mobile-nav {
        display: block;
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 998;
    }
    .mobile-nav.show {
        transform: translateX(0);
    }
    .mobile-nav ul {
        padding: 20px;
    }
    .mobile-nav li {
        margin-bottom: 16px;
    }
    .mobile-nav a {
        font-size: 16px;
        color: #333;
    }
    .mobile-btn {
        display: inline-block;
        padding: 8px 20px;
        background: #1677ff;
        color: #fff;
        border-radius: 4px;
        margin-top: 10px;
        margin-right: 10px;
    }
    .package-list {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)) !important;
        gap: 16px !important;
    }
    .package-card {
        padding: 20px;
    }
    .package-info p {
        font-size: 15px;
    }
    .package-info ul li {
        font-size: 14px;
    }
    .current-price {
        font-size: 22px;
    }
    .console-section .container, .user-center-section .container {
        flex-direction: column;
    }
    .console-sidebar, .user-sidebar {
        width: 100%;
    }
    .instance-list {
        grid-template-columns: 1fr;
    }
    .method-list {
        flex-direction: column;
    }
}
/* 顶部合规提示条 */
.top-notice {
    background: #f5f7fa;
    border-bottom: 1px solid #e8e8e8;
    padding: 8px 0;
    margin-top: 64px;
}
.notice-content {
    text-align: center;
    font-size: 13px;
    color: #666;
    position: relative;
}
.notice-content i {
    color: #1677ff;
    margin-right: 6px;
}
.notice-divider {
    margin: 0 10px;
    color: #d9d9d9;
}
.notice-close {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 18px;
    color: #999;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s ease;
}
.notice-close:hover {
    color: #333;
}
/* 提示条关闭后调整页面间距 */
body.notice-closed .top-notice {
    display: none;
}
body.notice-closed .page-title {
    margin-top: 64px !important;
}
/* 用户下拉菜单（已修复消失问题） */
.user-dropdown {
    position: relative;
    cursor: pointer;
    /* 增加底部内边距，消除鼠标移动空隙 */
    padding-bottom: 20px;
    margin-bottom: -20px;
}

.user-dropdown:hover .dropdown-menu,
.dropdown-menu:hover {
    display: block;
}

.dropdown-menu {
    position: absolute;
    /* 调整top值，消除与触发元素的空隙 */
    top: 95%;
    right: 0;
    width: 180px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    padding: 8px 0;
    display: none;
    /* 提高z-index，确保不会被其他元素遮挡 */
    z-index: 9999;
    /* 移除原来的margin-top，改用top值控制间距 */
    margin-top: 0;
    /* 增加一个透明边框区域，防止鼠标移动时空隙导致消失 */
    padding-top: 12px;
    margin-top: -4px;
}

/* 修复下拉菜单项悬停样式 */
.dropdown-item {
    padding: 10px 20px;
    transition: background 0.2s ease;
    /* 确保菜单项占满整个宽度 */
    display: block;
}

.dropdown-item:hover {
    background: #f5f7fa;
}

.dropdown-item a {
    display: flex;
    align-items: center;
    color: #333;
    font-size: 14px;
    /* 确保链接占满整个菜单项 */
    width: 100%;
    height: 100%;
}
.user-dropdown:hover .dropdown-menu {
    display: block;
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 180px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    padding: 8px 0;
    display: none;
    z-index: 1000;
    margin-top: 8px;
}
.dropdown-item {
    padding: 10px 20px;
    transition: background 0.2s ease;
}
.dropdown-item:hover {
    background: #f5f7fa;
}
.dropdown-item a {
    display: flex;
    align-items: center;
    color: #333;
    font-size: 14px;
}
.dropdown-item a i {
    width: 20px;
    margin-right: 10px;
    color: #666;
}
.dropdown-divider {
    height: 1px;
    background: #f0f0f0;
    margin: 8px 0;
}
/* 悬浮QQ客服按钮 */
.float-qq {
    position: fixed;
    right: 30px;
    bottom: 150px;
    width: 60px;
    height: 60px;
    background: #12b7f5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(18, 183, 245, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 999;
}
.float-qq:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(18, 183, 245, 0.4);
}
.float-qq i {
    font-size: 32px;
    color: #fff;
}
.float-qq .tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: #333;
    color: #fff;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.float-qq:hover .tooltip {
    opacity: 1;
    visibility: visible;
}