/* ============================================
   壹号娱乐 - 公共样式文件
   配色方案仿照原站（红色系主色调）
   ============================================ */

/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    background: #f5f5f5;
    line-height: 1.6;
    min-width: 1200px;
}
a { text-decoration: none; color: inherit; transition: color 0.3s; }
a:hover { color: #e53935; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
.clearfix::after { content: ''; display: block; clear: both; }

/* Container */
.container { width: 1200px; margin: 0 auto; padding: 0 15px; }

/* ============================================
   顶部导航栏
   ============================================ */
.top-bar {
    background: #fff;
    border-bottom: 1px solid #eee;
    height: 40px;
    line-height: 40px;
    font-size: 13px;
    color: #999;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar .welcome { color: #666; }
.top-bar .top-links a { margin-left: 15px; color: #666; font-size: 13px; }
.top-bar .top-links a:hover { color: #e53935; }
.top-bar .hotline { color: #e53935; font-weight: bold; font-size: 14px; }

/* 主导航 */
.main-nav {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 70px;
}
.main-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo { display: flex; align-items: center; }
.logo h1 {
    font-size: 24px;
    color: #e53935;
    font-weight: bold;
    letter-spacing: 2px;
}
.logo .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #e53935, #ff6f00);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
    margin-right: 10px;
}
.nav-menu { display: flex; align-items: center; }
.nav-menu li { position: relative; }
.nav-menu li a {
    display: block;
    padding: 0 18px;
    height: 70px;
    line-height: 70px;
    font-size: 15px;
    color: #333;
    transition: all 0.3s;
    white-space: nowrap;
}
.nav-menu li a:hover,
.nav-menu li a.active {
    color: #e53935;
    border-bottom: 3px solid #e53935;
}
.nav-menu li .hot-tag {
    position: absolute;
    top: 15px;
    right: 5px;
    background: #e53935;
    color: #fff;
    font-size: 10px;
    padding: 1px 4px;
    border-radius: 3px;
    line-height: 1.2;
}
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-right .search-box {
    display: flex;
    align-items: center;
    border: 1px solid #ddd;
    border-radius: 20px;
    padding: 0 15px;
    height: 36px;
}
.nav-right .search-box input {
    border: none;
    outline: none;
    font-size: 13px;
    width: 150px;
    background: transparent;
}
.nav-right .search-box button {
    border: none;
    background: none;
    color: #999;
    cursor: pointer;
    font-size: 16px;
}
.nav-right .btn-login,
.nav-right .btn-register {
    padding: 6px 18px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}
.nav-right .btn-login {
    color: #e53935;
    border: 1px solid #e53935;
    background: #fff;
}
.nav-right .btn-login:hover { background: #fef0f0; }
.nav-right .btn-register {
    background: #e53935;
    color: #fff;
    border: 1px solid #e53935;
}
.nav-right .btn-register:hover { background: #c62828; }

/* ============================================
   Banner 轮播
   ============================================ */
.banner {
    position: relative;
    overflow: hidden;
    height: 450px;
}
.banner-slide {
    position: relative;
    height: 450px;
    background-size: cover;
    background-position: center;
    display: none;
}
.banner-slide.active { display: block; }
.banner-slide .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}
.banner-content {
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}
.banner-content h2 {
    font-size: 42px;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}
.banner-content p {
    font-size: 18px;
    margin-bottom: 25px;
    opacity: 0.9;
}
.banner-content .btn-banner {
    display: inline-block;
    padding: 12px 40px;
    background: #e53935;
    color: #fff;
    border-radius: 4px;
    font-size: 16px;
    transition: all 0.3s;
}
.banner-content .btn-banner:hover { background: #c62828; transform: translateY(-2px); }
.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}
.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}
.banner-dots span.active { background: #e53935; }

/* ============================================
   数据统计条
   ============================================ */
.stats-bar {
    background: #fff;
    padding: 25px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.stats-bar .container { display: flex; justify-content: space-around; align-items: center; }
.stat-item { display: flex; align-items: center; gap: 12px; }
.stat-item .stat-icon {
    width: 50px;
    height: 50px;
    background: #fef0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #e53935;
}
.stat-item .stat-text h4 { font-size: 16px; color: #333; }
.stat-item .stat-text p { font-size: 13px; color: #999; }

/* ============================================
   区块标题
   ============================================ */
.section-title {
    text-align: center;
    padding: 50px 0 30px;
}
.section-title h2 {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}
.section-title p { font-size: 14px; color: #999; }
.section-title .title-line {
    width: 60px;
    height: 3px;
    background: #e53935;
    margin: 15px auto 0;
}

/* ============================================
   产品分类标签
   ============================================ */
.category-tabs {
    background: #fff;
    padding: 20px 0;
}
.category-tabs .container { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
.category-tabs .tab-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid #eee;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    color: #666;
}
.category-tabs .tab-item:hover,
.category-tabs .tab-item.active {
    border-color: #e53935;
    color: #e53935;
    background: #fef0f0;
}
.category-tabs .tab-item .tab-icon { font-size: 20px; }

/* ============================================
   产品卡片网格
   ============================================ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 20px 0;
}
.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.product-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.product-card .card-img {
    height: 200px;
    overflow: hidden;
    position: relative;
}
.product-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.product-card:hover .card-img img { transform: scale(1.05); }
.product-card .card-body { padding: 15px; }
.product-card .card-body h3 { font-size: 16px; color: #333; margin-bottom: 8px; }
.product-card .card-body p { font-size: 13px; color: #999; line-height: 1.5; margin-bottom: 12px; }
.product-card .card-body .price { color: #e53935; font-size: 20px; font-weight: bold; }
.product-card .card-body .price span { font-size: 13px; color: #999; font-weight: normal; }
.product-card .card-footer {
    display: flex;
    justify-content: space-between;
    padding: 12px 15px;
    border-top: 1px solid #f0f0f0;
}
.product-card .card-footer a {
    font-size: 13px;
    color: #e53935;
    transition: all 0.3s;
}
.product-card .card-footer a:hover { text-decoration: underline; }

/* ============================================
   套餐方案区域
   ============================================ */
.package-section { background: #fff; padding: 40px 0; }
.package-tabs { display: flex; gap: 0; margin-bottom: 30px; }
.package-tabs .pkg-tab {
    flex: 1;
    padding: 20px;
    border: 1px solid #eee;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}
.package-tabs .pkg-tab:hover,
.package-tabs .pkg-tab.active {
    border-color: #e53935;
    background: #fef0f0;
}
.package-tabs .pkg-tab h4 { font-size: 16px; color: #333; margin-bottom: 5px; }
.package-tabs .pkg-tab p { font-size: 12px; color: #999; }
.package-content { padding: 20px; background: #fafafa; border-radius: 8px; }
.package-content h3 { font-size: 20px; color: #333; margin-bottom: 10px; }
.package-content .pkg-desc { font-size: 14px; color: #666; margin-bottom: 20px; }
.package-content .btn-detail {
    display: inline-block;
    padding: 10px 30px;
    background: #e53935;
    color: #fff;
    border-radius: 4px;
    transition: all 0.3s;
}
.package-content .btn-detail:hover { background: #c62828; }

/* ============================================
   客户案例
   ============================================ */
.case-section { padding: 40px 0; }
.case-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 25px; justify-content: center; }
.case-tabs .case-tab {
    padding: 8px 20px;
    border: 1px solid #ddd;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
}
.case-tabs .case-tab:hover,
.case-tabs .case-tab.active { background: #e53935; color: #fff; border-color: #e53935; }
.case-card {
    display: flex;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.case-card .case-img { width: 40%; }
.case-card .case-img img { width: 100%; height: 100%; object-fit: cover; }
.case-card .case-info { flex: 1; padding: 30px; }
.case-card .case-info h3 { font-size: 22px; color: #333; margin-bottom: 15px; }
.case-card .case-info p { font-size: 14px; color: #666; line-height: 1.8; margin-bottom: 20px; }
.case-card .case-info .btn-consult {
    display: inline-block;
    padding: 10px 30px;
    background: #e53935;
    color: #fff;
    border-radius: 4px;
}

/* ============================================
   新闻/学院区域
   ============================================ */
.news-section { background: #fff; padding: 40px 0; }
.news-tabs { display: flex; gap: 30px; margin-bottom: 25px; border-bottom: 2px solid #eee; }
.news-tabs .news-tab {
    padding: 10px 0;
    font-size: 16px;
    cursor: pointer;
    position: relative;
    color: #666;
    transition: all 0.3s;
}
.news-tabs .news-tab.active,
.news-tabs .news-tab:hover { color: #e53935; }
.news-tabs .news-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #e53935;
}
.news-tabs .more-link { margin-left: auto; color: #999; font-size: 14px; line-height: 40px; }
.news-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.news-panel { min-height: 300px; }
.news-panel .news-featured {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #f0f0f0;
}
.news-panel .news-featured img { width: 120px; height: 80px; object-fit: cover; border-radius: 4px; }
.news-panel .news-featured .news-info h4 { font-size: 15px; color: #333; margin-bottom: 8px; line-height: 1.4; }
.news-panel .news-featured .news-info p { font-size: 12px; color: #999; }
.news-panel .news-list li {
    padding: 8px 0;
    border-bottom: 1px dashed #f0f0f0;
}
.news-panel .news-list li a {
    font-size: 14px;
    color: #666;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.news-panel .news-list li a:hover { color: #e53935; }
.news-panel .news-list li a::before {
    content: '•';
    color: #e53935;
    margin-right: 8px;
}

/* ============================================
   CTA注册引导区
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    padding: 60px 0;
    color: #fff;
}
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.cta-card { padding: 30px; }
.cta-card h3 { font-size: 22px; margin-bottom: 15px; }
.cta-card p { font-size: 14px; opacity: 0.8; margin-bottom: 5px; }
.cta-card .btn-cta {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 35px;
    border-radius: 4px;
    font-size: 15px;
    transition: all 0.3s;
}
.cta-card .btn-cta.btn-red { background: #e53935; color: #fff; }
.cta-card .btn-cta.btn-red:hover { background: #c62828; }
.cta-card .btn-cta.btn-outline { border: 1px solid #fff; color: #fff; }
.cta-card .btn-cta.btn-outline:hover { background: rgba(255,255,255,0.1); }

/* ============================================
   服务保障条
   ============================================ */
.guarantee-bar {
    background: #fff;
    padding: 30px 0;
    border-top: 1px solid #eee;
}
.guarantee-bar .container { display: flex; justify-content: space-around; }
.guarantee-item { display: flex; align-items: center; gap: 12px; }
.guarantee-item .g-icon { font-size: 32px; color: #e53935; }
.guarantee-item .g-text h4 { font-size: 15px; color: #333; }
.guarantee-item .g-text p { font-size: 12px; color: #999; }

/* ============================================
   底部 Footer
   ============================================ */
.footer {
    background: #2d2d2d;
    color: #ccc;
    padding: 40px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr) 1.5fr;
    gap: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #444;
}
.footer-col h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e53935;
    display: inline-block;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: #aaa; transition: color 0.3s; }
.footer-col ul li a:hover { color: #e53935; }
.footer-contact .hotline { font-size: 24px; color: #e53935; font-weight: bold; margin: 10px 0; }
.footer-contact .qr-codes { display: flex; gap: 15px; margin-top: 15px; }
.footer-contact .qr-code {
    width: 90px;
    height: 90px;
    background: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: #999;
}
.footer-bottom {
    padding: 15px 0;
    text-align: center;
    font-size: 12px;
    color: #888;
}
.footer-bottom a { color: #aaa; margin: 0 10px; }

/* ============================================
   页面Banner（子页面通用）
   ============================================ */
.page-banner {
    height: 250px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
}
.page-banner h1 {
    position: relative;
    z-index: 1;
    color: #fff;
    font-size: 36px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb {
    padding: 15px 0;
    font-size: 13px;
    color: #999;
    background: #fff;
    border-bottom: 1px solid #eee;
}
.breadcrumb a { color: #666; }
.breadcrumb a:hover { color: #e53935; }
.breadcrumb span { margin: 0 8px; }

/* ============================================
   侧边栏布局
   ============================================ */
.content-layout { display: flex; gap: 25px; padding: 30px 0; }
.sidebar { width: 240px; flex-shrink: 0; }
.sidebar-menu { background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.sidebar-menu li a {
    display: block;
    padding: 14px 20px;
    font-size: 14px;
    color: #666;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s;
}
.sidebar-menu li a:hover,
.sidebar-menu li a.active {
    background: #e53935;
    color: #fff;
}
.main-content { flex: 1; background: #fff; border-radius: 8px; padding: 30px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.main-content h2 { font-size: 22px; color: #333; margin-bottom: 20px; text-align: center; }
.main-content h3 { font-size: 18px; color: #333; margin: 20px 0 10px; }
.main-content p { font-size: 14px; color: #666; line-height: 1.8; margin-bottom: 15px; }

/* ============================================
   文章详情页
   ============================================ */
.article-detail { padding: 30px 0; }
.article-header { text-align: center; margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid #eee; }
.article-header h1 { font-size: 26px; color: #333; margin-bottom: 15px; line-height: 1.4; }
.article-meta { font-size: 13px; color: #999; }
.article-meta span { margin: 0 10px; }
.article-body { font-size: 15px; color: #555; line-height: 2; }
.article-body p { margin-bottom: 18px; text-indent: 2em; }
.article-body img { margin: 20px auto; border-radius: 8px; }
.article-body h3 { font-size: 18px; color: #333; margin: 25px 0 15px; padding-left: 12px; border-left: 3px solid #e53935; }
.article-nav { display: flex; justify-content: space-between; padding: 20px 0; margin-top: 30px; border-top: 1px solid #eee; }
.article-nav a { font-size: 14px; color: #666; }
.article-nav a:hover { color: #e53935; }

/* ============================================
   活动页面
   ============================================ */
.activity-section { padding: 40px 0; }
.coupon-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }
.coupon-card {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    text-align: center;
    transition: all 0.3s;
}
.coupon-card:hover { transform: translateY(-3px); box-shadow: 0 5px 20px rgba(0,0,0,0.12); }
.coupon-card h4 { font-size: 16px; color: #333; margin-bottom: 15px; }
.coupon-card .coupon-price { font-size: 28px; color: #e53935; font-weight: bold; margin-bottom: 15px; }
.coupon-card .coupon-price span { font-size: 14px; }
.coupon-card .btn-claim {
    display: inline-block;
    padding: 8px 25px;
    border: 1px solid #e53935;
    color: #e53935;
    border-radius: 4px;
    transition: all 0.3s;
}
.coupon-card .btn-claim:hover { background: #e53935; color: #fff; }

/* ============================================
   登录/注册页面
   ============================================ */
.auth-section {
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    padding: 60px 0;
}
.auth-card {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    width: 420px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
.auth-card h2 { text-align: center; font-size: 24px; color: #333; margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: #666; margin-bottom: 8px; }
.form-group input {
    width: 100%;
    height: 44px;
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 0 15px;
    font-size: 14px;
    transition: border-color 0.3s;
}
.form-group input:focus { border-color: #e53935; outline: none; }
.btn-submit {
    width: 100%;
    height: 46px;
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}
.btn-submit:hover { background: #c62828; }
.auth-links { text-align: center; margin-top: 20px; font-size: 13px; color: #999; }
.auth-links a { color: #e53935; }

/* ============================================
   APP下载页面
   ============================================ */
.app-section {
    background: linear-gradient(135deg, #1a1a2e, #0f3460);
    min-height: 700px;
    display: flex;
    align-items: center;
    color: #fff;
    padding: 60px 0;
}
.app-content { display: flex; align-items: center; gap: 60px; }
.app-info { flex: 1; }
.app-info h2 { font-size: 36px; margin-bottom: 20px; }
.app-info p { font-size: 16px; opacity: 0.8; margin-bottom: 30px; line-height: 1.8; }
.app-buttons { display: flex; gap: 20px; margin-bottom: 30px; }
.app-buttons .btn-download {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s;
}
.app-buttons .btn-ios { background: #333; color: #fff; }
.app-buttons .btn-android { background: #e53935; color: #fff; }
.app-buttons .btn-download:hover { transform: translateY(-2px); opacity: 0.9; }
.app-qr {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}
.app-qr .qr-item { text-align: center; }
.app-qr .qr-box {
    width: 120px;
    height: 120px;
    background: #fff;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    font-size: 12px;
    margin-bottom: 8px;
}
.app-qr .qr-item p { font-size: 13px; opacity: 0.8; }
.app-preview { width: 350px; }
.app-preview .phone-mockup {
    width: 280px;
    height: 500px;
    background: linear-gradient(135deg, #e53935, #ff6f00);
    border-radius: 30px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.app-preview .phone-screen {
    width: 100%;
    height: 100%;
    background: #1a1a2e;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

/* ============================================
   招商加盟页面
   ============================================ */
.join-hero {
    background: linear-gradient(135deg, #0a1628, #1a3a6c);
    padding: 80px 0;
    text-align: center;
    color: #fff;
}
.join-hero h2 { font-size: 38px; margin-bottom: 20px; }
.join-hero .tags { display: flex; justify-content: center; gap: 20px; margin-top: 25px; }
.join-hero .tags span {
    padding: 10px 30px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 4px;
    font-size: 15px;
}
.join-stats { padding: 60px 0; text-align: center; }
.join-stats h3 { font-size: 26px; color: #333; margin-bottom: 40px; }
.join-stats .stats-grid { display: flex; justify-content: center; gap: 60px; }
.join-stats .stat-circle {
    text-align: center;
}
.join-stats .stat-circle .circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e53935, #ff6f00);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin: 0 auto 15px;
}
.join-stats .stat-circle .circle .num { font-size: 28px; font-weight: bold; }
.join-stats .stat-circle .circle .unit { font-size: 12px; }
.join-stats .stat-circle p { font-size: 14px; color: #666; }

/* ============================================
   解决方案页面
   ============================================ */
.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; padding: 30px 0; }
.solution-card {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: all 0.3s;
}
.solution-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
.solution-card h3 { font-size: 18px; color: #333; margin-bottom: 10px; }
.solution-card p { font-size: 13px; color: #999; margin-bottom: 15px; line-height: 1.6; }
.solution-card .price { color: #e53935; font-size: 22px; font-weight: bold; margin-bottom: 15px; }
.solution-card .price span { font-size: 13px; color: #999; font-weight: normal; }
.solution-card .card-btns { display: flex; gap: 10px; }
.solution-card .card-btns a {
    flex: 1;
    text-align: center;
    padding: 8px 0;
    border-radius: 4px;
    font-size: 13px;
    transition: all 0.3s;
}
.solution-card .card-btns .btn-view { border: 1px solid #e53935; color: #e53935; }
.solution-card .card-btns .btn-view:hover { background: #fef0f0; }
.solution-card .card-btns .btn-buy { background: #e53935; color: #fff; }
.solution-card .card-btns .btn-buy:hover { background: #c62828; }

/* ============================================
   服务中心页面
   ============================================ */
.faq-list { padding: 20px 0; }
.faq-item {
    border-bottom: 1px solid #eee;
    padding: 15px 0;
}
.faq-item .faq-q {
    font-size: 15px;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
}
.faq-item .faq-q::after { content: '+'; font-size: 20px; color: #e53935; }
.faq-item .faq-a {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    padding: 10px 0;
    display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q::after { content: '-'; }

/* ============================================
   右侧浮动工具栏
   ============================================ */
.float-tools {
    position: fixed;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.float-tools .tool-item {
    width: 50px;
    height: 50px;
    background: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 12px;
    color: #666;
    text-align: center;
    line-height: 1.2;
}
.float-tools .tool-item:hover { background: #e53935; color: #fff; }
.float-tools .tool-item.back-top { font-size: 18px; }

/* ============================================
   通用按钮
   ============================================ */
.btn {
    display: inline-block;
    padding: 10px 25px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}
.btn-primary { background: #e53935; color: #fff; border: 1px solid #e53935; }
.btn-primary:hover { background: #c62828; color: #fff; }
.btn-outline-primary { border: 1px solid #e53935; color: #e53935; background: transparent; }
.btn-outline-primary:hover { background: #fef0f0; color: #e53935; }
.btn-lg { padding: 14px 40px; font-size: 16px; }

/* ============================================
   分页
   ============================================ */
.pagination { display: flex; justify-content: center; gap: 8px; padding: 30px 0; }
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    color: #666;
    transition: all 0.3s;
}
.pagination a:hover, .pagination span.active { background: #e53935; color: #fff; border-color: #e53935; }

/* ============================================
   表格样式
   ============================================ */
.data-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.data-table th, .data-table td { padding: 12px 15px; border: 1px solid #eee; font-size: 14px; }
.data-table th { background: #f8f8f8; color: #333; font-weight: 600; }
.data-table td { color: #666; }
.data-table tr:hover { background: #fef0f0; }

/* ============================================
   动画
   ============================================ */
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.6s ease-out; }
@keyframes slideIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
.slide-in { animation: slideIn 0.5s ease-out; }