/* ============================================================
   拓创云 - 前台主样式表 v5.0
   设计风格：阿里云官网式明亮橙白通透风格（中性灰底版）
   主色：#ff6a00  背景：#ffffff/#f7f8fa/#fafbfc  文字：#1d2129
   更新：v5.0 去除暖色/粉色底纹，统一中性冷灰色；重新设计悬浮客服挂件
   ============================================================ */

/* ========== 重置与基础 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #1d2129;
    background: #f7f8fa;
    -webkit-font-smoothing: antialiased;
}
a { color: #ff6a00; text-decoration: none; transition: color 0.2s; }
a:hover { color: #ff8c33; }
img { max-width: 100%; height: auto; border: 0; vertical-align: middle; }
ul, ol { list-style: none; }
input, button, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
.container { width: 1200px; max-width: 95%; margin: 0 auto; }
.clearfix::after { content: ''; display: block; clear: both; }

/* ========== 顶部通知栏 ========== */
.top-bar {
    background: #f7f8fa;
    color: #4e5969;
    font-size: 12px;
    height: 36px;
    line-height: 36px;
    border-bottom: 1px solid #e5e6eb;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar-left { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-bar-right { display: flex; gap: 20px; }
.top-contact { display: flex; align-items: center; gap: 4px; }
.top-contact .contact-img { height: 14px; vertical-align: middle; }

/* ========== 主导航 ========== */
.main-header {
    background: #fff;
    border-bottom: 1px solid #e5e6eb;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo a { display: flex; align-items: center; gap: 0; text-decoration: none; }
.logo-icon { display: none; }
.logo-text {
    font-size: 22px;
    font-weight: bold;
    color: #1d2129;
    letter-spacing: 1px;
    line-height: 1.2;
}
.logo-text small {
    display: block;
    font-size: 11px;
    font-weight: normal;
    color: #86909c;
    letter-spacing: 0;
    margin-top: 2px;
}
.logo-accent { color: #ff6a00; }

/* 导航菜单 */
.main-nav > ul { display: flex; }
.main-nav > ul > li {
    position: relative;
    padding: 0 18px;
}
.main-nav > ul > li > a {
    display: block;
    line-height: 70px;
    font-size: 15px;
    font-weight: 500;
    color: #1d2129;
    position: relative;
}
.main-nav > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: #ff6a00;
    transition: width 0.3s;
}
.main-nav > ul > li:hover > a::after,
.main-nav > ul > li.active > a::after { width: 60%; }
.main-nav > ul > li:hover > a,
.main-nav > ul > li.active > a { color: #ff6a00; }

/* 子菜单 */
.sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border-radius: 0 0 6px 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
    z-index: 99;
    border: 1px solid #e5e6eb;
    border-top: none;
}
.main-nav > ul > li:hover .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.sub-menu li { border-bottom: 1px solid #f2f3f5; }
.sub-menu li:last-child { border-bottom: none; }
.sub-menu a {
    display: block;
    padding: 12px 18px;
    font-size: 14px;
    color: #4e5969;
    line-height: 1.4;
}
.sub-menu a:hover { background: #f7f8fa; color: #ff6a00; }

/* 导航CTA按钮 */
.nav-cta {
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    color: #fff !important;
    padding: 8px 20px !important;
    border-radius: 4px;
    line-height: 1.4 !important;
    margin-top: 21px;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(255,106,0,0.25);
}
.nav-cta:hover { background: linear-gradient(135deg, #e55a00, #ff6a00); color: #fff !important; opacity: 1; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(255,106,0,0.35); }
.nav-cta::after { display: none !important; }

/* 导航搜索框 */
.header-search {
    display: flex;
    align-items: center;
    margin-left: 16px;
}
.header-search form {
    display: flex;
    border: 1px solid #e5e6eb;
    border-radius: 20px;
    overflow: hidden;
    background: #fff;
    transition: all 0.3s;
}
.header-search form:focus-within {
    border-color: #ff6a00;
    box-shadow: 0 0 0 3px rgba(255,106,0,0.1);
}
.header-search input {
    border: none;
    padding: 7px 14px;
    width: 160px;
    font-size: 13px;
    color: #1d2129;
    background: transparent;
    outline: none;
}
.header-search input::placeholder { color: #86909c; }
.header-search button {
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    color: #fff;
    border: none;
    padding: 7px 16px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}
.header-search button:hover { background: linear-gradient(135deg, #e55a00, #ff6a00); }
.header-search button::before {
    content: '🔍';
    font-size: 12px;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: #1d2129;
}

/* ========== 按钮 ========== */
.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    color: #fff;
    padding: 10px 28px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}
.btn-primary:hover { background: linear-gradient(135deg, #e55a00, #ff6a00); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,106,0,0.35); }
.btn-primary:active { background: linear-gradient(135deg, #cc4d00, #e55a00); }
.btn-lg { padding: 14px 36px; font-size: 16px; }
.btn-outline {
    display: inline-block;
    background: #fff;
    color: #ff6a00;
    padding: 10px 28px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #ff6a00;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}
.btn-outline:hover { background: #f7f8fa; border-color: #ff8c33; color: #ff8c33; }
/* 浅色背景上的描边按钮 */
.btn-outline-orange {
    background: #fff;
    color: #ff6a00;
    border: 1px solid #ff6a00;
}
.btn-outline-orange:hover {
    background: #f7f8fa;
    color: #ff6a00;
    border-color: #ff6a00;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* ========== Hero Banner ========== */
.hero-banner {
    position: relative;
    height: 420px;
    background: linear-gradient(135deg, #f7f8fa 0%, #fafbfc 50%, #ffffff 100%);
    overflow: hidden;
}
.hero-banner .container {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
}
.banner-content { color: #1d2129; max-width: 620px; }
.banner-content h1 {
    font-size: 38px;
    font-weight: bold;
    margin-bottom: 16px;
    line-height: 1.3;
}
.banner-content h1 span { color: #ff6a00; }
.banner-content p {
    font-size: 16px;
    color: #4e5969;
    margin-bottom: 28px;
    line-height: 1.8;
}
.banner-btns { display: flex; gap: 16px; }

/* ========== 通用区块 ========== */
.section { padding: 60px 0; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 {
    font-size: 28px;
    font-weight: bold;
    color: #1d2129;
    margin-bottom: 10px;
}
.section-header h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #ff6a00;
    margin: 12px auto 0;
}
.section-header p { color: #86909c; font-size: 14px; }
.section-gray { background: #f7f8fa; }

/* 页面标题区（内页） */
.page-header {
    background: linear-gradient(135deg, #f7f8fa 0%, #fafbfc 100%);
    color: #1d2129;
    padding: 50px 0;
    text-align: center;
    border-bottom: 1px solid #e5e6eb;
}
.page-header h1 { font-size: 30px; font-weight: bold; margin-bottom: 10px; }
.page-header p { color: #4e5969; font-size: 14px; }

/* ========== 特性/优势网格 ========== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-item {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    transition: all 0.3s;
}
.feature-item:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); border-color: #ff6a00; }
.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: #f7f8fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}
.feature-item h3 { font-size: 16px; font-weight: bold; color: #1d2129; margin-bottom: 8px; }
.feature-item p { font-size: 13px; color: #4e5969; line-height: 1.6; }

/* ========== 产品卡片网格 ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid #e5e6eb;
    position: relative;
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border-color: #ff6a00;
}
.product-card .product-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #ff6a00;
    color: #fff;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 4px;
    z-index: 2;
}
.product-card .product-tag.hot { background: #ff7d00; }
.product-card .product-tag.recommend { background: #00b42a; }
.product-image {
    height: 160px;
    background: linear-gradient(135deg, #fafbfc, #ffffff);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.product-image img { max-height: 130px; object-fit: contain; }
.product-image .product-icon {
    font-size: 48px;
    color: #ff6a00;
    opacity: 0.6;
}
.product-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 {
    font-size: 17px;
    font-weight: bold;
    color: #1d2129;
    margin-bottom: 8px;
}
.product-body .product-desc {
    font-size: 13px;
    color: #4e5969;
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-series-tag-inline {
    display: inline-block;
    background: #f7f8fa;
    color: #ff6a00;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 3px;
    margin-bottom: 8px;
}
.product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 12px;
    margin-bottom: 16px;
    font-size: 12px;
}
.product-specs .spec-item { color: #4e5969; }
.product-specs .spec-item strong { color: #1d2129; font-weight: 500; }
.product-price-row {
    display: flex;
    align-items: baseline;
    justify-content: center;
    text-align: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}
.product-price {
    font-size: 24px;
    font-weight: bold;
    color: #f53f3f;
}
.product-price small { font-size: 13px; font-weight: normal; color: #86909c; }
.product-original-price {
    font-size: 13px;
    color: #c9cdd4;
    text-decoration: line-through;
}
/* 优惠话术 */
.product-promo {
    display: block;
    text-align: center;
    font-size: 12px;
    color: #ff6a00;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.2s;
    line-height: 1.4;
}
.product-promo:hover { color: #e55a00; text-decoration: underline; }
.product-btn {
    display: block;
    width: 100%;
    text-align: center;
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    color: #fff;
    padding: 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: auto;
}
.product-btn:hover { background: linear-gradient(135deg, #e55a00, #ff6a00); color: #fff; transform: scale(1.02); box-shadow: 0 4px 12px rgba(255,106,0,0.3); }
.product-btn-outline {
    display: block;
    width: 100%;
    text-align: center;
    background: #fff;
    color: #ff6a00;
    padding: 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #ff6a00;
    cursor: pointer;
    margin-top: 8px;
    transition: all 0.3s;
}
.product-btn-outline:hover { background: #f7f8fa; }

/* ========== 筛选栏 ========== */
.filter-bar {
    background: #fff;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    padding: 16px 20px;
    margin-bottom: 30px;
}
.filter-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}
.filter-group:last-child { margin-bottom: 0; }
.filter-group label {
    font-size: 14px;
    color: #4e5969;
    font-weight: 500;
    margin-right: 4px;
    flex-shrink: 0;
}
.filter-group a {
    display: inline-block;
    padding: 5px 14px;
    font-size: 13px;
    color: #4e5969;
    border: 1px solid #e5e6eb;
    border-radius: 4px;
    transition: all 0.2s;
}
.filter-group a:hover { border-color: #ff6a00; color: #ff6a00; }
.filter-group a.active {
    background: #ff6a00;
    color: #fff;
    border-color: #ff6a00;
}

/* ========== 文章列表（卡片式） ========== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.article-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e5e6eb;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}
.article-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-4px); border-color: #ff6a00; }
.article-thumb {
    height: 140px;
    background: linear-gradient(135deg, #fafbfc, #ffffff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    color: #ff6a00;
    opacity: 0.7;
}
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.article-category {
    display: inline-block;
    background: #f7f8fa;
    color: #ff6a00;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 3px;
    margin-bottom: 8px;
    align-self: flex-start;
}
.article-body h3 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
    line-height: 1.4;
}
.article-body h3 a { color: #1d2129; }
.article-body h3 a:hover { color: #ff6a00; }
.article-summary {
    font-size: 13px;
    color: #4e5969;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}
.article-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: #86909c;
    margin-top: auto;
}

/* 文章列表（横向列表式，用于文章列表页） */
.article-list { display: flex; flex-direction: column; gap: 20px; }
.article-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    transition: all 0.3s;
}
.article-item:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); border-color: #ff6a00; }
.article-item .article-thumb {
    width: 200px;
    height: 130px;
    flex-shrink: 0;
    border-radius: 6px;
    overflow: hidden;
}
.article-item-content { flex: 1; min-width: 0; }
.article-item-content h3 {
    font-size: 17px;
    font-weight: bold;
    margin-bottom: 8px;
}
.article-item-content h3 a { color: #1d2129; }
.article-item-content h3 a:hover { color: #ff6a00; }

/* ========== 面包屑 ========== */
.breadcrumb {
    font-size: 13px;
    color: #86909c;
    margin-bottom: 24px;
    padding: 0;
}
.breadcrumb a { color: #86909c; }
.breadcrumb a:hover { color: #ff6a00; }
.breadcrumb span { margin: 0 6px; color: #c9cdd4; }

/* ========== 产品详情页 ========== */
.product-detail-wrap { padding: 40px 0; }
.product-detail {
    display: flex;
    gap: 40px;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    margin-bottom: 30px;
}
.product-detail-image {
    width: 400px;
    flex-shrink: 0;
    height: 300px;
    background: linear-gradient(135deg, #fafbfc, #ffffff);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-detail-image img { max-height: 240px; }
.product-detail-image .product-icon { font-size: 80px; color: #ff6a00; opacity: 0.4; }
.product-detail-info { flex: 1; }
.product-detail-info .product-series-tag {
    display: inline-block;
    background: #f7f8fa;
    color: #ff6a00;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: 3px;
    margin-bottom: 12px;
}
.product-detail-info h1 {
    font-size: 24px;
    font-weight: bold;
    color: #1d2129;
    margin-bottom: 12px;
    line-height: 1.4;
}
.product-detail-info .product-subtitle {
    font-size: 14px;
    color: #4e5969;
    margin-bottom: 20px;
}
.detail-price-box {
    background: #f7f8fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 16px;
    display: flex;
    gap: 30px;
    border: 1px solid #e5e6eb;
}
.detail-price-item .price-label { font-size: 13px; color: #86909c; margin-bottom: 4px; }
.detail-price { font-size: 28px; font-weight: bold; color: #f53f3f; }
.detail-price small { font-size: 14px; color: #86909c; font-weight: normal; }
/* 详情页优惠话术 */
.detail-promo {
    display: inline-block;
    font-size: 13px;
    color: #ff6a00;
    background: #fff;
    padding: 6px 14px;
    border-radius: 16px;
    margin-bottom: 20px;
    cursor: pointer;
    border: 1px solid #e5e6eb;
    transition: all 0.2s;
    font-weight: 500;
}
.detail-promo:hover { background: #ff6a00; color: #fff; border-color: #ff6a00; }
.detail-spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}
.detail-spec-table th, .detail-spec-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid #f2f3f5;
    font-size: 13px;
}
.detail-spec-table th {
    width: 100px;
    color: #86909c;
    font-weight: normal;
    background: #f7f8fa;
}
.detail-spec-table td { color: #1d2129; }
.detail-actions { display: flex; gap: 16px; margin-bottom: 16px; }
.detail-trust { font-size: 13px; color: #86909c; }
.detail-trust span { margin-right: 16px; }

/* 详细参数表 */
.spec-section {
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    padding: 30px;
    margin-bottom: 30px;
}
.spec-section h3 {
    font-size: 18px;
    color: #1d2129;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ff6a00;
    display: inline-block;
}
.spec-table {
    width: 100%;
    border-collapse: collapse;
}
.spec-table th, .spec-table td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid #e5e6eb;
    font-size: 14px;
}
.spec-table th {
    background: #f7f8fa;
    color: #1d2129;
    font-weight: 500;
    width: 140px;
}
.spec-table tr:nth-child(even) td { background: #fafbfc; }
.spec-table tr:hover td { background: #f7f8fa; }

/* 机房标签 */
.region-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}
.region-tag {
    padding: 8px 18px;
    border: 1px solid #e5e6eb;
    border-radius: 4px;
    font-size: 13px;
    color: #4e5969;
    cursor: pointer;
    transition: all 0.2s;
}
.region-tag:hover { border-color: #ff6a00; color: #ff6a00; }
.region-tag.active {
    background: #ff6a00;
    color: #fff;
    border-color: #ff6a00;
}

/* 特性列表 */
.features-list {
    padding-left: 0;
    margin-bottom: 24px;
}
.features-list li {
    padding: 8px 0 8px 24px;
    position: relative;
    font-size: 14px;
    color: #4e5969;
    line-height: 1.7;
}
.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00b42a;
    font-weight: bold;
}

/* 产品描述 */
.product-description {
    font-size: 15px;
    line-height: 1.9;
    color: #4e5969;
}

/* 相关产品 */
.related-products h3 {
    font-size: 20px;
    color: #1d2129;
    margin-bottom: 20px;
}

/* ========== 文章详情页 ========== */
.article-detail-wrap { padding: 40px 0; }
.article-detail {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    max-width: 860px;
    margin: 0 auto 30px;
}
.article-detail h1 {
    font-size: 26px;
    font-weight: bold;
    color: #1d2129;
    margin-bottom: 16px;
    line-height: 1.4;
}
.article-detail-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: #86909c;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e6eb;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.article-detail-content {
    font-size: 15px;
    line-height: 1.9;
    color: #4e5969;
}
.article-detail-content h2 { font-size: 20px; margin: 28px 0 14px; color: #1d2129; }
.article-detail-content h3 { font-size: 17px; margin: 22px 0 12px; color: #1d2129; }
.article-detail-content p { margin-bottom: 14px; }
.article-detail-content img { max-width: 100%; border-radius: 4px; margin: 16px 0; }
.article-detail-content ul, .article-detail-content ol { padding-left: 24px; margin-bottom: 14px; }
.article-detail-content ul li, .article-detail-content ol li { margin-bottom: 6px; list-style: disc; }
.article-detail-content blockquote {
    border-left: 4px solid #ff6a00;
    padding: 12px 20px;
    background: #f7f8fa;
    margin: 16px 0;
    color: #4e5969;
}
.article-detail-cta {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid #e5e6eb;
    text-align: center;
}
.article-detail-cta p { color: #86909c; margin-bottom: 16px; }

/* 上一篇/下一篇 */
.article-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    max-width: 860px;
    margin: 0 auto 30px;
}
.article-nav a {
    flex: 1;
    background: #fff;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    padding: 16px 20px;
    font-size: 14px;
    color: #4e5969;
    transition: all 0.2s;
}
.article-nav a:hover { border-color: #ff6a00; color: #ff6a00; }
.article-nav .nav-label { font-size: 12px; color: #86909c; display: block; margin-bottom: 4px; }

/* 相关文章 */
.related-articles {
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e5e6eb;
    padding: 24px 30px;
    max-width: 860px;
    margin: 0 auto;
}
.related-articles h3 {
    font-size: 18px;
    color: #1d2129;
    margin-bottom: 16px;
}
.related-articles ul li {
    padding: 10px 0;
    border-bottom: 1px dashed #e5e6eb;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.related-articles ul li:last-child { border-bottom: none; }
.related-articles ul li a { color: #4e5969; font-size: 14px; }
.related-articles ul li a:hover { color: #ff6a00; }
.related-articles ul li span { color: #86909c; font-size: 12px; flex-shrink: 0; margin-left: 16px; }

/* ========== 关于我们页 ========== */
.about-section { padding: 50px 0; }
.about-content { max-width: 900px; margin: 0 auto; }
.about-content h2 {
    font-size: 22px;
    color: #1d2129;
    margin: 30px 0 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid #ff6a00;
    display: inline-block;
}
.about-content h2:first-child { margin-top: 0; }
.about-content p { line-height: 1.9; color: #4e5969; margin-bottom: 14px; }
.about-content ul { padding-left: 24px; margin-bottom: 14px; }
.about-content ul li { list-style: disc; margin-bottom: 8px; color: #4e5969; line-height: 1.7; }

/* 联系方式卡片 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 30px 0;
}
.contact-card {
    background: #fff;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    transition: all 0.3s;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.08); border-color: #ff6a00; }
.cc-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: #f7f8fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}
.contact-card h4 { font-size: 16px; color: #1d2129; margin-bottom: 12px; }
.contact-card p { font-size: 13px; color: #86909c; margin-bottom: 6px; }
.contact-card .contact-img { height: 20px; margin: 4px 0; }
.contact-card img.qrcode-img { width: 120px; height: 120px; margin: 12px auto 0; display: block; }

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 40px;
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid #e5e6eb;
    border-radius: 4px;
    font-size: 14px;
    color: #4e5969;
    transition: all 0.2s;
}
.pagination a:hover { border-color: #ff6a00; color: #ff6a00; }
.pagination .page-current {
    background: #ff6a00;
    color: #fff;
    border-color: #ff6a00;
}
.pagination .page-ellipsis { border: none; color: #86909c; }

/* ========== 空状态 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #86909c;
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state p { font-size: 15px; margin-bottom: 16px; }

/* ============================================================
   悬浮客服组件 v2.0（重新设计）
   竖向圆角矩形卡片，顶部橙色把手，图标+文字竖排
   ============================================================ */
#floatingService {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    width: 56px;
    transition: width 0.3s;
    user-select: none;
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    border: 1px solid #e5e6eb;
}

/* 顶部橙色把手 */
.fs-handle {
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    color: #fff;
    height: 24px;
    cursor: move;
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    position: relative;
    line-height: 1;
}
.fs-handle::before {
    content: '🎧';
    font-size: 11px;
}

/* 客服项主体 */
.fs-body {
    background: #fff;
    overflow: hidden;
}
.fs-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 60px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: all 0.25s;
    text-decoration: none;
    color: #4e5969;
    position: relative;
    font-size: 11px;
    line-height: 1.3;
    gap: 3px;
}
.fs-item:last-child { border-bottom: none; }
.fs-item:hover { background: #f7f8fa; color: #ff6a00; }
.fs-item .fs-icon {
    font-size: 18px;
    line-height: 1;
    transition: all 0.25s;
}
.fs-item:hover .fs-icon { transform: scale(1.15); }
.fs-item .fs-label {
    font-size: 10px;
    color: inherit;
    white-space: nowrap;
}

/* 回顶部按钮 */
.fs-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 52px;
    cursor: pointer;
    font-size: 10px;
    color: #86909c;
    background: #fafbfc;
    transition: all 0.25s;
    line-height: 1.3;
    border-top: 1px solid #f0f0f0;
    gap: 2px;
}
.fs-top:hover { background: #f7f8fa; color: #ff6a00; }
.fs-top::before {
    content: '↑';
    font-size: 16px;
    font-weight: bold;
    line-height: 1;
}

/* 微信二维码弹出 */
.wechat-popup {
    display: none;
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-right: 12px;
    background: #fff;
    padding: 16px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    border: 1px solid #e5e6eb;
    z-index: 10000;
    white-space: nowrap;
    text-align: center;
}
.wechat-popup::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    border: 8px solid transparent;
    border-left-color: #fff;
}
.fs-item:hover .wechat-popup { display: block; }
.wechat-popup img { width: 130px; height: 130px; display: block; border-radius: 8px; margin: 0 auto; }
.wechat-popup p { text-align: center; font-size: 12px; color: #4e5969; margin-top: 10px; font-weight: 500; }
.wechat-popup .qrcode-placeholder {
    width: 130px;
    height: 130px;
    background: #f7f8fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #86909c;
    font-size: 12px;
    margin: 0 auto;
}

/* ============================================================
   客服选择弹窗 v2.0（美化）
   ============================================================ */
.service-modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
}
.service-modal-overlay.active { display: flex; }
.service-modal {
    background: #fff;
    border-radius: 16px;
    padding: 0;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 24px 60px rgba(0,0,0,0.2);
    overflow: hidden;
    animation: modalSlideIn 0.3s ease;
}
@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.service-modal h3 {
    font-size: 18px;
    color: #fff;
    margin: 0;
    padding: 18px 24px;
    background: linear-gradient(135deg, #ff6a00, #ff8c33);
    font-weight: 600;
    letter-spacing: 1px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.service-modal h3 .modal-close-x {
    cursor: pointer;
    font-size: 20px;
    opacity: 0.8;
    transition: opacity 0.2s;
    font-weight: normal;
}
.service-modal h3 .modal-close-x:hover { opacity: 1; }
.modal-options { display: flex; flex-direction: column; gap: 12px; padding: 24px; }
.modal-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    border: 2px solid #e5e6eb;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s;
    background: #fff;
}
.modal-option:hover { border-color: #ff6a00; background: #f7f8fa; transform: translateX(4px); box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
.modal-option:hover .opt-icon { background: linear-gradient(135deg, #ff6a00, #ff8c33); color: #fff; }
.opt-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: #f7f8fa;
    color: #ff6a00;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    transition: all 0.25s;
}
.opt-info h4 { font-size: 15px; color: #1d2129; margin-bottom: 2px; font-weight: 600; }
.opt-info p { font-size: 12px; color: #86909c; }
.modal-close {
    display: block;
    width: calc(100% - 48px);
    margin: 0 24px 24px;
    padding: 12px;
    background: #f7f8fa;
    border: 1px solid #e5e6eb;
    border-radius: 8px;
    font-size: 14px;
    color: #4e5969;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}
.modal-close:hover { background: #e5e6eb; border-color: #c9cdd4; color: #1d2129; }

/* ========== 页脚 ========== */
.main-footer {
    background: #fff;
    color: #4e5969;
    padding-top: 50px;
    border-top: 1px solid #e5e6eb;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-col h4 {
    color: #1d2129;
    font-size: 16px;
    margin-bottom: 18px;
    font-weight: 500;
}
.footer-about { font-size: 13px; line-height: 1.8; margin-bottom: 16px; color: #4e5969; }
.footer-contact p {
    font-size: 13px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: #4e5969;
}
.footer-contact .contact-img { height: 14px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #4e5969; font-size: 13px; }
.footer-col ul li a:hover { color: #ff6a00; }
.footer-bottom {
    border-top: 1px solid #e5e6eb;
    background: #f7f8fa;
    padding: 18px 0;
    font-size: 12px;
    color: #86909c;
}
.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-icp a { color: #ff6a00; }
.footer-icp a:hover { color: #ff8c33; }

/* ========== 回到顶部（独立按钮，备用） ========== */
.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 30px;
    width: 44px;
    height: 44px;
    background: rgba(29,33,41,0.6);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: #ff6a00; }

/* ========== CTA区块 ========== */
.cta-section {
    background: linear-gradient(135deg, #f7f8fa 0%, #fafbfc 100%);
    padding: 50px 0;
    text-align: center;
    border-top: 1px solid #e5e6eb;
    border-bottom: 1px solid #e5e6eb;
}
.cta-section h2 { color: #1d2129; font-size: 26px; margin-bottom: 12px; }
.cta-section p { color: #4e5969; margin-bottom: 24px; }
.cta-section .banner-btns { justify-content: center; }

/* ========== 邮箱产品专用样式 ========== */
.mail-price-contact {
    font-size: 22px;
    font-weight: bold;
    color: #ff6a00;
}
.mail-spec-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
    margin-bottom: 16px;
    font-size: 12px;
}
.mail-spec-grid .spec-item { color: #4e5969; display: flex; align-items: baseline; gap: 4px; }
.mail-spec-grid .spec-item strong { color: #1d2129; font-weight: 500; white-space: nowrap; }

/* ========== 响应式适配 ========== */
@media (max-width: 1024px) {
    .container { width: 95%; }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-cards { grid-template-columns: 1fr; }
    .product-detail { flex-direction: column; }
    .product-detail-image { width: 100%; }
    .main-nav > ul > li { padding: 0 12px; }
    .header-search { display: none; }
}

@media (max-width: 768px) {
    .top-bar-right { display: none; }
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        border-top: 1px solid #e5e6eb;
    }
    .main-nav.open { display: block; }
    .main-nav > ul { flex-direction: column; }
    .main-nav > ul > li { padding: 0; border-bottom: 1px solid #f2f3f5; }
    .main-nav > ul > li > a { line-height: 50px; padding: 0 20px; }
    .main-nav > ul > li > a::after { display: none; }
    .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        border: none;
        display: none;
    }
    .main-nav > ul > li:hover .sub-menu { display: block; }
    .nav-cta { margin: 10px 20px; display: inline-block; }
    .mobile-menu-btn { display: flex; }
    .hero-banner { height: 300px; }
    .banner-content h1 { font-size: 24px; }
    .banner-content p { font-size: 14px; }
    .product-grid { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .article-item { flex-direction: column; }
    .article-item .article-thumb { width: 100%; height: 180px; }
    .product-detail { padding: 20px; gap: 20px; }
    .product-detail-image { height: 200px; }
    .detail-price-box { flex-direction: column; gap: 12px; }
    .detail-actions { flex-direction: column; }
    .detail-actions .btn-primary, .detail-actions .btn-outline { width: 100%; }
    .article-detail { padding: 24px 20px; }
    .article-nav { flex-direction: column; }
    .contact-cards { grid-template-columns: 1fr; }
    .section { padding: 40px 0; }
    .section-header h2 { font-size: 22px; }
    #floatingService { right: 10px; width: 50px; }
    .fs-handle { height: 22px; font-size: 10px; }
    .fs-item { height: 54px; }
    .fs-top { height: 48px; }
    .spec-section { padding: 20px; }
    .spec-table th, .spec-table td { padding: 10px 12px; font-size: 13px; }
    .filter-group { flex-wrap: wrap; }
    .service-modal { width: 90%; }
}