/* 统一高兼容性样式 - 适用于所有网站 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", Arial, sans-serif; font-size: 14px; line-height: 1.6; color: #333; background: #f5f5f5; }
a { color: #0066cc; text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; border: 0; }

/* 容器 */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 15px; }

/* 导航栏 */
.navbar { background: #fff; border-bottom: 1px solid #e8e8e8; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; min-height: 60px; box-shadow: 0 1px 4px rgba(0,0,0,0.05); }
.navbar .logo { font-size: 18px; font-weight: bold; color: #333; }
.navbar .nav-links { display: flex; gap: 5px; flex-wrap: wrap; }
.navbar .nav-links a { padding: 8px 12px; color: #666; border-radius: 4px; font-size: 13px; }
.navbar .nav-links a:hover, .navbar .nav-links a.active { background: #667eea; color: #fff; text-decoration: none; }
.navbar .user-info { display: flex; align-items: center; gap: 10px; }

/* 头部 */
.header { background: #fff; border-bottom: 1px solid #ddd; padding: 15px 0; }
.header .logo { font-size: 24px; font-weight: bold; color: #333; }
.header .nav { margin-top: 10px; }
.header .nav a { margin-right: 20px; color: #666; }

/* 主体 */
.main { padding: 20px 0; min-height: 500px; }

/* 底部 */
.footer { background: #fff; border-top: 1px solid #ddd; padding: 20px 0; text-align: center; color: #999; font-size: 12px; }

/* 登录页面 */
.login-page { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-box { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
.login-box h2 { text-align: center; margin-bottom: 20px; color: #333; }
.login-box .form-group { margin-bottom: 15px; }
.login-box label { display: block; margin-bottom: 5px; color: #666; }
.login-box input[type="text"], .login-box input[type="password"], .login-box input[type="email"] { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; }
.login-box input:focus { border-color: #667eea; outline: none; }
.login-box .btn { width: 100%; padding: 12px; background: #667eea; color: #fff; border: 0; border-radius: 4px; font-size: 16px; cursor: pointer; }
.login-box .btn:hover { background: #5568d3; }
.login-box .tips { margin-top: 15px; text-align: center; color: #999; font-size: 12px; }

/* 后台管理页面 */
.admin-page { background: #f5f5f5; }
.admin-header { background: #333; color: #fff; padding: 10px 20px; }
.admin-header .logo { font-size: 18px; font-weight: bold; }
.admin-header .user-info { float: right; }
.admin-header .user-info a { color: #fff; margin-left: 15px; }
.admin-sidebar { width: 200px; background: #fff; border-right: 1px solid #ddd; min-height: 500px; float: left; padding: 15px 0; }
.admin-sidebar ul { list-style: none; }
.admin-sidebar li { margin-bottom: 5px; }
.admin-sidebar a { display: block; padding: 10px 20px; color: #666; }
.admin-sidebar a:hover, .admin-sidebar a.active { background: #f0f0f0; color: #667eea; text-decoration: none; }
.admin-content { margin-left: 220px; padding: 20px; background: #fff; min-height: 500px; }

/* 统计网格 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 15px; margin-bottom: 20px; }
.stat-card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); border-left: 4px solid #667eea; }
.stat-card .label { font-size: 13px; color: #909399; margin-bottom: 8px; }
.stat-card .value { font-size: 24px; font-weight: bold; color: #333; }
.stat-card.primary { border-left-color: #667eea; }
.stat-card.primary .value { color: #667eea; }
.stat-card.success { border-left-color: #67c23a; }
.stat-card.success .value { color: #67c23a; }
.stat-card.info { border-left-color: #909399; }
.stat-card.info .value { color: #909399; }
.stat-card.warning { border-left-color: #e6a23c; }
.stat-card.warning .value { color: #e6a23c; }
.stat-card.danger { border-left-color: #f56c6c; }
.stat-card.danger .value { color: #f56c6c; }

/* 表格 */
table { width: 100%; border-collapse: collapse; margin-bottom: 20px; background: #fff; }
table th, table td { padding: 10px 12px; border: 1px solid #ebeef5; text-align: left; font-size: 13px; }
table th { background: #f5f7fa; font-weight: bold; color: #606266; }
table tr:hover { background: #f5f7fa; }
table .text-center { text-align: center; }
table .text-right { text-align: right; }

/* 按钮 */
.btn { display: inline-block; padding: 8px 16px; background: #667eea; color: #fff; border: 0; border-radius: 4px; cursor: pointer; font-size: 14px; text-align: center; }
.btn:hover { background: #5568d3; text-decoration: none; color: #fff; }
.btn-primary { background: #667eea; }
.btn-primary:hover { background: #5568d3; }
.btn-success { background: #67c23a; }
.btn-success:hover { background: #5daf34; }
.btn-danger { background: #f56c6c; }
.btn-danger:hover { background: #dd6161; }
.btn-warning { background: #e6a23c; }
.btn-warning:hover { background: #cf9236; }
.btn-info { background: #909399; }
.btn-info:hover { background: #82848a; }
.btn-default { background: #fff; color: #606266; border: 1px solid #dcdfe6; }
.btn-default:hover { background: #f5f7fa; color: #606266; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-block { display: block; width: 100%; }

/* 表单 */
.form-group { margin-bottom: 15px; }
.form-group label, .form-label { display: block; margin-bottom: 5px; color: #606266; font-weight: 500; }
.form-control, .form-group input[type="text"], .form-group input[type="password"], .form-group input[type="email"], .form-group input[type="number"], .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 1px solid #dcdfe6; border-radius: 4px; font-size: 14px; color: #606266; background: #fff; }
.form-control:focus, .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: #667eea; outline: none; }
.form-group textarea { min-height: 100px; resize: vertical; }
.form-inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* 提示信息 */
.alert { padding: 12px 16px; margin-bottom: 15px; border-radius: 4px; border: 1px solid; }
.alert-success { background: #f0f9eb; color: #67c23a; border-color: #e1f3d8; }
.alert-error, .alert-danger { background: #fef0f0; color: #f56c6c; border-color: #fde2e2; }
.alert-warning { background: #fdf6ec; color: #e6a23c; border-color: #faecd8; }
.alert-info { background: #f4f4f5; color: #909399; border-color: #e9e9eb; }

/* 标签 */
.tag { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 12px; line-height: 1.5; }
.tag-primary { background: #ecf5ff; color: #667eea; border: 1px solid #d9ecff; }
.tag-success { background: #f0f9eb; color: #67c23a; border: 1px solid #e1f3d8; }
.tag-info { background: #f4f4f5; color: #909399; border: 1px solid #e9e9eb; }
.tag-warning { background: #fdf6ec; color: #e6a23c; border: 1px solid #faecd8; }
.tag-danger { background: #fef0f0; color: #f56c6c; border: 1px solid #fde2e2; }
.tag-default { background: #f4f4f5; color: #909399; border: 1px solid #e9e9eb; }

/* 徽章 */
.badge { display: inline-block; padding: 2px 6px; border-radius: 10px; font-size: 11px; background: #f56c6c; color: #fff; }

/* 卡片 */
.card { background: #fff; border: 1px solid #ebeef5; border-radius: 8px; padding: 20px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.card h3 { margin-bottom: 15px; color: #303133; font-size: 16px; }
.card-header { padding: 15px 20px; border-bottom: 1px solid #ebeef5; font-weight: bold; }
.card-body { padding: 20px; }

/* 分页 */
.pagination { margin: 20px 0; text-align: center; }
.pagination a, .pagination span { display: inline-block; padding: 6px 12px; margin: 0 2px; border: 1px solid #dcdfe6; border-radius: 4px; color: #606266; background: #fff; }
.pagination a:hover { background: #f5f7fa; text-decoration: none; color: #667eea; }
.pagination .current, .pagination .active { background: #667eea; color: #fff; border-color: #667eea; }

/* 工具类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.text-muted { color: #909399; }
.text-primary { color: #667eea; }
.text-success { color: #67c23a; }
.text-warning { color: #e6a23c; }
.text-danger { color: #f56c6c; }
.mt-1 { margin-top: 5px; }
.mt-2 { margin-top: 10px; }
.mt-3 { margin-top: 15px; }
.mb-1 { margin-bottom: 5px; }
.mb-2 { margin-bottom: 10px; }
.mb-3 { margin-bottom: 15px; }
.p-1 { padding: 5px; }
.p-2 { padding: 10px; }
.p-3 { padding: 15px; }
.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-1 { gap: 5px; }
.gap-2 { gap: 10px; }
.gap-3 { gap: 15px; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* 下拉菜单 */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu { display: none; position: absolute; right: 0; top: 100%; background: #fff; border: 1px solid #ebeef5; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,0.1); min-width: 120px; z-index: 1000; }
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a { display: block; padding: 8px 15px; color: #606266; font-size: 13px; }
.dropdown-menu a:hover { background: #f5f7fa; color: #667eea; text-decoration: none; }

/* 模态框 */
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 2000; align-items: center; justify-content: center; }
.modal.show { display: flex; }
.modal-content { background: #fff; border-radius: 8px; padding: 20px; max-width: 500px; width: 90%; max-height: 80vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; padding-bottom: 10px; border-bottom: 1px solid #ebeef5; }
.modal-close { cursor: pointer; font-size: 20px; color: #909399; background: none; border: none; }

/* 进度条 */
.progress { height: 8px; background: #ebeef5; border-radius: 4px; overflow: hidden; margin-bottom: 10px; }
.progress-bar { height: 100%; background: #667eea; border-radius: 4px; transition: width 0.3s; }

/* 空状态 */
.empty-state { text-align: center; padding: 40px 20px; color: #909399; }
.empty-state .icon { font-size: 48px; margin-bottom: 15px; }

/* 响应式 */
@media (max-width: 768px) {
    .admin-sidebar { width: 100%; float: none; min-height: auto; }
    .admin-content { margin-left: 0; }
    .header .nav a { display: block; margin-bottom: 5px; }
    .navbar { flex-direction: column; padding: 10px; }
    .navbar .nav-links { justify-content: center; }
    .stats-grid { grid-template-columns: 1fr; }
    .form-inline { flex-direction: column; align-items: stretch; }
    table { font-size: 12px; }
    table th, table td { padding: 8px 6px; }
}


/* ========== 套餐卡片样式 ========== */
.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.package-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 25px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    border: 2px solid #eee;
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    border-color: #409eff;
}

.package-card.featured {
    border-color: #f56c6c;
    transform: scale(1.02);
}

.package-card.featured::before {
    content: '热门推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f56c6c, #e74c3c);
    color: #fff;
    padding: 4px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.package-category {
    display: inline-block;
    background: #ecf5ff;
    color: #409eff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.package-name {
    font-size: 20px;
    font-weight: bold;
    color: #303133;
    margin-bottom: 15px;
    text-align: center;
}

.package-price {
    text-align: center;
    margin-bottom: 20px;
    padding: 15px 0;
    background: #f8f9fa;
    border-radius: 8px;
}

.package-price .currency {
    font-size: 18px;
    color: #f56c6c;
    vertical-align: top;
}

.package-price .amount {
    font-size: 36px;
    font-weight: bold;
    color: #f56c6c;
}

.package-price .period {
    font-size: 14px;
    color: #909399;
    margin-left: 5px;
}

.package-desc {
    color: #606266;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
    min-height: 45px;
}

.package-features {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.package-features li {
    padding: 6px 0;
    color: #606266;
    font-size: 13px;
    border-bottom: 1px dashed #eee;
}

.package-features li:last-child {
    border-bottom: none;
}

/* ========== 分类标签样式 ========== */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}

.category-tab {
    padding: 8px 20px;
    background: #fff;
    border: 1px solid #dcdfe6;
    border-radius: 20px;
    color: #606266;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.category-tab:hover, .category-tab.active {
    background: #409eff;
    color: #fff;
    border-color: #409eff;
}

/* ========== 流程步骤样式 ========== */
.process-steps {
    display: flex;
    justify-content: space-around;
    margin: 30px 0;
    flex-wrap: wrap;
    gap: 20px;
}

.process-step {
    text-align: center;
    flex: 1;
    min-width: 150px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #409eff, #66b1ff);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.step-title {
    font-size: 16px;
    font-weight: bold;
    color: #303133;
    margin-bottom: 8px;
}

.step-desc {
    font-size: 13px;
    color: #909399;
    line-height: 1.5;
}

/* ========== 支付方式样式 ========== */
.pay-methods {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.pay-method {
    border: 2px solid #e4e7ed;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: #fff;
}

.pay-method:hover {
    border-color: #409eff;
    background: #f0f9ff;
}

.pay-method.active {
    border-color: #409eff;
    background: #ecf5ff;
    box-shadow: 0 0 0 3px rgba(64,158,255,0.2);
}

.pay-method .icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.pay-method .name {
    font-size: 16px;
    font-weight: bold;
    color: #303133;
    margin-bottom: 5px;
}

.pay-method .desc {
    font-size: 12px;
    color: #909399;
}

.pay-detail {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.pay-detail.active {
    display: block;
}

/* ========== 易支付类型选择 ========== */
.epay-types {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.epay-type {
    flex: 1;
    padding: 12px;
    border: 2px solid #e4e7ed;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: #fff;
    font-size: 14px;
}

.epay-type:hover {
    border-color: #409eff;
}

.epay-type.active {
    border-color: #409eff;
    background: #ecf5ff;
    color: #409eff;
    font-weight: bold;
}

/* ========== 支付按钮 ========== */
.btn-pay {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: bold;
    margin-top: 15px;
}

/* ========== 账户信息 ========== */
.account-info {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    border-left: 4px solid #409eff;
}

.account-info .label {
    font-size: 13px;
    color: #909399;
    margin-bottom: 5px;
}

.account-info .value {
    font-size: 18px;
    font-weight: bold;
    color: #303133;
}

/* ========== 二维码框 ========== */
.qrcode-box {
    text-align: center;
    margin: 15px 0;
}

.qrcode-box img {
    max-width: 200px;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 10px;
    background: #fff;
}

/* ========== 步骤列表 ========== */
.steps {
    padding-left: 20px;
    margin: 15px 0;
}

.steps li {
    margin-bottom: 10px;
    color: #606266;
    line-height: 1.6;
}

/* ========== 结算页样式 ========== */
.checkout-page {
    background: #f5f7fa;
    min-height: 100vh;
    padding: 30px 0;
}

.checkout-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.checkout-header {
    text-align: center;
    margin-bottom: 30px;
}

.checkout-header h1 {
    font-size: 28px;
    color: #303133;
    margin-bottom: 10px;
}

.checkout-header p {
    color: #909399;
    font-size: 14px;
}

/* ========== 警告框 ========== */
.alert {
    padding: 12px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-danger {
    background: #fef0f0;
    color: #f56c6c;
    border: 1px solid #fde2e2;
}

/* ========== 时间提示 ========== */
.time-notice {
    background: #fdf6ec;
    color: #e6a23c;
    padding: 10px 15px;
    border-radius: 6px;
    font-size: 13px;
    margin: 15px 0;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .package-grid {
        grid-template-columns: 1fr;
    }
    
    .pay-methods {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .checkout-header h1 {
        font-size: 22px;
    }
}


/* ========== 首页专属样式补充 ========== */

/* Hero主横幅 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
}
.hero .container {
    position: relative;
    z-index: 1;
}
.hero h1 {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.3;
}
.hero p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}
.hero .btn {
    background: #fff;
    color: #667eea;
    font-size: 18px;
    padding: 14px 40px;
    border-radius: 30px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: all 0.3s;
}
.hero .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    background: #fff;
    color: #667eea;
}

/* 风险提示框 */
.risk-notice {
    background: #fdf6ec;
    border: 1px solid #faecd8;
    border-left: 4px solid #e6a23c;
    border-radius: 8px;
    padding: 20px 25px;
    margin-bottom: 20px;
}
.risk-notice h4 {
    color: #e6a23c;
    font-size: 16px;
    margin-bottom: 12px;
    font-weight: bold;
}
.risk-notice p {
    color: #606266;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 10px;
}
.risk-notice p:last-child {
    margin-bottom: 0;
}
.risk-notice ul, .risk-notice ol {
    margin: 10px 0;
    padding-left: 25px;
}
.risk-notice li {
    color: #606266;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 5px;
}

/* 价格显示 */
.price {
    color: #f56c6c;
    font-size: 28px;
    font-weight: bold;
}
.price .currency {
    font-size: 16px;
    vertical-align: top;
}
.price .amount {
    font-size: 32px;
}

/* 天数显示 */
.days {
    color: #909399;
    font-size: 14px;
}

/* 步骤容器 */
.steps {
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
    margin: 30px 0;
}

/* 单个步骤 */
.step {
    text-align: center;
    flex: 1;
    min-width: 150px;
    position: relative;
}
.step .step-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 15px;
    box-shadow: 0 4px 15px rgba(102,126,234,0.3);
}
.step .step-title {
    font-size: 16px;
    font-weight: bold;
    color: #303133;
    margin-bottom: 8px;
}
.step .step-desc {
    font-size: 13px;
    color: #909399;
    line-height: 1.6;
}

/* 版权信息 */
.copyright {
    text-align: center;
    color: #909399;
    font-size: 13px;
    padding: 15px 0;
    border-top: 1px solid #ebeef5;
    margin-top: 20px;
}
.copyright p {
    margin: 0;
    line-height: 1.6;
}

/* 首页区块通用 */
section {
    margin-bottom: 0;
}
section h2 {
    font-size: 32px;
    color: #303133;
    text-align: center;
    margin-bottom: 15px;
    font-weight: bold;
}
section .section-desc {
    text-align: center;
    color: #909399;
    font-size: 16px;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 服务卡片 */
.service-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 25px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s;
    text-align: center;
    height: 100%;
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}
.service-card .icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 20px;
}
.service-card h3 {
    font-size: 18px;
    color: #303133;
    margin-bottom: 12px;
    font-weight: bold;
}
.service-card p {
    color: #606266;
    font-size: 14px;
    line-height: 1.7;
}

/* 服务网格 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

/* 案例卡片 */
.case-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s;
}
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}
.case-card .case-content {
    padding: 20px;
}
.case-card .case-title {
    font-size: 16px;
    font-weight: bold;
    color: #303133;
    margin-bottom: 10px;
}
.case-card .case-desc {
    font-size: 14px;
    color: #606266;
    line-height: 1.6;
}

/* FAQ样式 */
.faq-item {
    background: #fff;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #ebeef5;
    overflow: hidden;
}
.faq-question {
    padding: 18px 20px;
    font-weight: bold;
    color: #303133;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
}
.faq-question:hover {
    background: #f5f7fa;
}
.faq-answer {
    padding: 0 20px 18px;
    color: #606266;
    font-size: 14px;
    line-height: 1.8;
    display: none;
}
.faq-item.active .faq-answer {
    display: block;
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}
.cta-section h2 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 15px;
}
.cta-section p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 30px;
}
.cta-section .btn {
    background: #fff;
    color: #667eea;
    font-size: 18px;
    padding: 14px 40px;
    border-radius: 30px;
    font-weight: bold;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero {
        padding: 50px 0;
    }
    .hero h1 {
        font-size: 28px;
    }
    .hero p {
        font-size: 15px;
    }
    section h2 {
        font-size: 24px;
    }
    .steps {
        flex-direction: column;
        align-items: center;
    }
    .step {
        min-width: 100%;
        max-width: 300px;
    }
    .service-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 移动端适配 ===== */
@media screen and (max-width: 768px) {
    body { font-size: 15px; }
    .container { padding: 0 12px; }
    .navbar { padding: 10px 12px; flex-wrap: wrap; min-height: 50px; }
    .navbar .logo { font-size: 16px; }
    .navbar .nav-links { gap: 3px; width: 100%; overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; padding-bottom: 5px; }
    .navbar .nav-links a { padding: 6px 10px; font-size: 12px; white-space: nowrap; }
    .navbar .user-info { font-size: 12px; }
    h1 { font-size: 22px !important; }
    h2 { font-size: 18px !important; }
    h3 { font-size: 16px !important; }
    .btn { padding: 8px 16px !important; font-size: 14px !important; }
    .btn-sm { padding: 5px 10px !important; font-size: 12px !important; }
    .card { padding: 15px !important; border-radius: 8px !important; }
    .form-control { font-size: 16px !important; padding: 10px !important; }
    .form-group { margin-bottom: 12px; }
    .table { font-size: 12px !important; }
    .table th, .table td { padding: 6px 4px !important; }
    /* 表格横向滚动 */
    .table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .stats-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 10px !important; }
    .stat-card { padding: 12px !important; }
    .stat-card .value { font-size: 20px !important; }
    .footer { font-size: 11px; padding: 15px 10px; }
}

@media screen and (max-width: 480px) {
    body { font-size: 14px; }
    .container { padding: 0 10px; }
    h1 { font-size: 20px !important; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
    .price-card, .feature-card { padding: 15px !important; }
    .hero-section, .cta-section { padding: 30px 15px !important; }
    .case-item, .advantage-item { padding: 15px !important; }
}

/* 防止横排内容溢出 */
img, video, table { max-width: 100%; }
table { border-collapse: collapse; }