/* ============================================================
   ent-tech-group —— 集团企业官网模板样式表 (v2.0.77)
   ------------------------------------------------------------
   版式参照工业集团官网通用信息架构原创实现，代码与素材均为原创。
   所有样式外置于本文件，模板内不内联 style（仅保留主题色变量）。
   容器 1600px / 侧栏 320px / 区块间距 96px（v2.0.51 宽屏与三端响应式改造）
   著作权归 陕西新势力网络科技有限公司。
   ============================================================ */

:root {
    --tg-p: #1a5c9e;
    --tg-pd: #124271;
    --tg-p-light: #e8f1fa;
    --tg-text: #2b2b2b;
    --tg-text-sub: #666666;
    --tg-text-mute: #999999;
    --tg-line: #e5e5e5;
    --tg-bg-soft: #f5f7fa;
    --tg-topbar: #2b2b2b;
    /* v2.0.51：主容器宽度提升至 1600px（差异化设计最低宽度要求 ≥1600px） */
    --tg-w: 1600px;
    --tg-w-narrow: 1320px;   /* 长文正文的舒适阅读宽度 */
    --tg-side: 320px;        /* 侧栏随主容器同步加宽 */
    --tg-gap: 30px;          /* 统一栅格间距 */
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', Arial, sans-serif;
    font-size: 15px;
    line-height: 1.75;
    color: var(--tg-text);
    background: #ffffff;
}

a { text-decoration: none; color: inherit; transition: color .25s; }
a:hover { color: var(--tg-p); }
ul, ol { list-style: none; }
img { max-width: 100%; border: 0; vertical-align: middle; }

.tg-c { max-width: var(--tg-w); margin: 0 auto; padding: 0 40px; }

/* ============ 1. 顶部通栏工具条 ============ */
.tg-topbar { background: var(--tg-topbar); color: #c8c8c8; font-size: 13px; }
.tg-topbar-in {
    max-width: var(--tg-w); margin: 0 auto; padding: 0 20px;
    height: 38px; display: flex; align-items: center; justify-content: space-between;
}
.tg-topbar a { color: #c8c8c8; }
.tg-topbar a:hover { color: #ffffff; }
.tg-tb-left { display: flex; align-items: center; gap: 18px; }
.tg-tb-right { display: flex; align-items: center; gap: 18px; }
.tg-tb-tel { color: #ffffff; font-weight: 600; letter-spacing: .5px; }

/* ============ 2. 主导航（含二级下拉） ============ */
.tg-header { background: #ffffff; box-shadow: 0 2px 12px rgba(0, 0, 0, .07); position: sticky; top: 0; z-index: 1000; }
.tg-header-in {
    max-width: var(--tg-w); margin: 0 auto; padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 30px;
}
.tg-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.tg-logo-mark {
    width: 44px; height: 44px; border-radius: 8px; flex-shrink: 0;
    background: linear-gradient(135deg, var(--tg-p), var(--tg-pd));
    color: #fff; font-size: 21px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.tg-logo-txt { display: flex; flex-direction: column; line-height: 1.3; }
.tg-logo-name { font-size: 19px; font-weight: 700; color: var(--tg-text); }
.tg-logo-sub { font-size: 11px; color: var(--tg-text-mute); letter-spacing: 1.5px; text-transform: uppercase; }
/* 站点 Logo（后台「站点管理」上传，存 cms_site.logo；留空则显示站点名称文字） */
.tg-logo-img { height: 44px; width: auto; max-width: 220px; object-fit: contain; display: block; }
@media (max-width: 768px) {
    .tg-logo-img { height: 34px; max-width: 160px; }
}

.tg-nav { display: flex; align-items: center; }
.tg-nav > ul { display: flex; align-items: center; }
.tg-nav > ul > li { position: relative; }
.tg-nav > ul > li > a {
    display: block; padding: 30px 19px; font-size: 16px; font-weight: 500;
    color: var(--tg-text); position: relative; white-space: nowrap;
}
.tg-nav > ul > li > a::after {
    content: ''; position: absolute; left: 19px; right: 19px; bottom: 22px;
    height: 3px; background: var(--tg-p); transform: scaleX(0);
    transform-origin: left; transition: transform .28s;
}
.tg-nav > ul > li:hover > a,
.tg-nav > ul > li.tg-on > a { color: var(--tg-p); }
.tg-nav > ul > li:hover > a::after,
.tg-nav > ul > li.tg-on > a::after { transform: scaleX(1); }

/* 二级下拉面板 */
.tg-sub {
    position: absolute; top: 100%; left: 0; min-width: 186px;
    background: #ffffff; box-shadow: 0 10px 30px rgba(0, 0, 0, .14);
    border-top: 3px solid var(--tg-p); padding: 8px 0;
    opacity: 0; visibility: hidden; transform: translateY(12px);
    transition: all .25s; z-index: 1001;
}
.tg-nav > ul > li:hover > .tg-sub { opacity: 1; visibility: visible; transform: translateY(0); }
.tg-sub li a {
    display: block; padding: 9px 22px; font-size: 14px; color: var(--tg-text-sub);
    white-space: nowrap; position: relative;
}
.tg-sub li a::before { content: '\203A'; margin-right: 8px; color: var(--tg-p); opacity: .55; }
.tg-sub li a:hover { background: var(--tg-p-light); color: var(--tg-p); }

.tg-nav-toggle { display: none; }

/* ============ 3. 首页 Banner ============ */
.tg-banner { position: relative; background: linear-gradient(135deg, #0f3d6e 0%, var(--tg-p) 55%, #2f7fc4 100%); overflow: hidden; }
.tg-banner::after {
    content: ''; position: absolute; right: -120px; top: -80px; width: 560px; height: 560px;
    background: radial-gradient(circle, rgba(255, 255, 255, .11) 0%, transparent 68%);
    border-radius: 50%; pointer-events: none;
}
.tg-banner-in {
    max-width: var(--tg-w); margin: 0 auto; padding: 132px 40px;
    position: relative; z-index: 2; color: #ffffff;
}
.tg-banner-tag {
    display: inline-block; padding: 6px 18px; margin-bottom: 22px;
    border: 1px solid rgba(255, 255, 255, .42); border-radius: 20px;
    font-size: 13px; letter-spacing: 2px; opacity: .95;
}
.tg-banner h1 { font-size: 58px; font-weight: 800; line-height: 1.2; margin-bottom: 26px; color: #ffffff; letter-spacing: 1px; }
.tg-banner p { font-size: 19px; max-width: 900px; opacity: .92; margin-bottom: 40px; line-height: 1.9; }
.tg-banner-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.tg-btn {
    display: inline-block; padding: 13px 36px; border-radius: 4px;
    font-size: 15px; font-weight: 600; background: #ffffff; color: var(--tg-p);
    transition: all .25s;
}
.tg-btn:hover { background: var(--tg-p-light); color: var(--tg-pd); transform: translateY(-2px); }
.tg-btn-o { background: transparent; color: #ffffff; border: 1px solid rgba(255, 255, 255, .6); }
.tg-btn-o:hover { background: rgba(255, 255, 255, .14); color: #ffffff; }
.tg-btn-solid { background: var(--tg-p); color: #ffffff; }
.tg-btn-solid:hover { background: var(--tg-pd); color: #ffffff; }

/* ============ 4. 内页 Banner（窄幅） ============ */
.tg-pagehero { background: linear-gradient(135deg, #0f3d6e, var(--tg-p)); color: #ffffff; padding: 54px 0; }
.tg-pagehero-in { max-width: var(--tg-w); margin: 0 auto; padding: 0 20px; }
.tg-pagehero h1 { font-size: 32px; font-weight: 700; color: #ffffff; margin-bottom: 6px; }
.tg-pagehero p { font-size: 14px; opacity: .82; letter-spacing: 1px; }

/* ============ 5. 面包屑 ============ */
.tg-crumb { background: var(--tg-bg-soft); border-bottom: 1px solid var(--tg-line); font-size: 13px; color: var(--tg-text-mute); }
.tg-crumb-in { max-width: var(--tg-w); margin: 0 auto; padding: 13px 20px; }
.tg-crumb a { color: var(--tg-text-sub); }
.tg-crumb a:hover { color: var(--tg-p); }
.tg-crumb .tg-sep { margin: 0 9px; opacity: .55; }
.tg-crumb .tg-cur { color: var(--tg-p); }

/* ============ 6. 通用区块 ============ */
.tg-sec { padding: 96px 0; }
.tg-sec-soft { background: var(--tg-bg-soft); }
.tg-sec-head { text-align: center; margin-bottom: 60px; }
.tg-sec-head h2 { font-size: 38px; font-weight: 700; color: var(--tg-text); margin-bottom: 12px; letter-spacing: .5px; }
.tg-sec-head .tg-en {
    font-size: 12px; letter-spacing: 3.5px; color: var(--tg-p);
    font-weight: 600; text-transform: uppercase;
}
.tg-sec-head .tg-line {
    width: 46px; height: 3px; background: var(--tg-p); margin: 16px auto 0; border-radius: 2px;
}
.tg-sec-head p.tg-desc { font-size: 16px; color: var(--tg-text-sub); max-width: 1000px; margin: 18px auto 0; }

/* ============ 7. 首页：产品分类入口条 ============ */
.tg-cats { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--tg-gap); }
.tg-cat {
    display: block; background: #ffffff; border: 1px solid var(--tg-line); border-radius: 6px;
    padding: 32px 18px; text-align: center; transition: all .3s;
}
.tg-cat:hover { transform: translateY(-6px); box-shadow: 0 14px 32px rgba(26, 92, 158, .13); border-color: var(--tg-p); }
.tg-cat-ic {
    width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
    background: var(--tg-p-light); color: var(--tg-p);
    font-size: 22px; font-weight: 700;
    display: flex; align-items: center; justify-content: center; transition: all .3s;
}
.tg-cat:hover .tg-cat-ic { background: var(--tg-p); color: #ffffff; }
.tg-cat h3 { font-size: 16px; font-weight: 600; color: var(--tg-text); margin-bottom: 6px; }
.tg-cat span { font-size: 12px; color: var(--tg-text-mute); letter-spacing: 1px; }

/* ============ 8. 首页：新闻中心（左大图 + 右列表 6:4） ============ */
.tg-news { display: grid; grid-template-columns: 6fr 4fr; gap: 48px; align-items: start; }
.tg-news-main {
    display: block; position: relative; border-radius: 6px; overflow: hidden;
    background: linear-gradient(135deg, #17324f, #2b5f8f); min-height: 330px;
    padding: 30px; display: flex; flex-direction: column; justify-content: flex-end; color: #fff;
}
.tg-news-main:hover { color: #fff; }
.tg-news-main .tg-date { font-size: 13px; opacity: .82; margin-bottom: 10px; letter-spacing: 1px; }
.tg-news-main h3 { font-size: 23px; font-weight: 700; line-height: 1.45; margin-bottom: 12px; color: #fff; }
.tg-news-main p { font-size: 14px; opacity: .86; line-height: 1.8; }
.tg-news-list li { border-bottom: 1px dashed var(--tg-line); }
.tg-news-list li:last-child { border-bottom: 0; }
.tg-news-list a { display: flex; gap: 16px; padding: 15px 4px; align-items: baseline; }
.tg-news-list .tg-date {
    flex-shrink: 0; width: 76px; font-size: 13px; color: var(--tg-p);
    font-weight: 600; font-family: Arial, sans-serif;
}
.tg-news-list .tg-t {
    font-size: 15px; color: var(--tg-text-sub); overflow: hidden;
    text-overflow: ellipsis; white-space: nowrap; flex: 1;
}
.tg-news-list a:hover .tg-t { color: var(--tg-p); }

/* ============ 9. 首页：企业简介（左文右品牌 1:1） ============ */
.tg-about { display: grid; grid-template-columns: 1fr 1fr; gap: 76px; align-items: center; }
.tg-about-txt h2 { font-size: 29px; font-weight: 700; margin-bottom: 8px; }
.tg-about-txt .tg-en { font-size: 12px; letter-spacing: 3px; color: var(--tg-p); font-weight: 600; margin-bottom: 22px; }
.tg-about-txt p { font-size: 15px; color: var(--tg-text-sub); line-height: 2; margin-bottom: 14px; text-align: justify; }
.tg-about-side { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.tg-brand {
    background: #ffffff; border: 1px solid var(--tg-line); border-radius: 6px;
    padding: 26px 20px; text-align: center; transition: all .3s;
}
.tg-brand:hover { border-color: var(--tg-p); box-shadow: 0 8px 22px rgba(0, 0, 0, .07); }
.tg-brand b { display: block; font-size: 16px; color: var(--tg-text); margin-bottom: 6px; }
.tg-brand span { font-size: 12px; color: var(--tg-text-mute); }

/* ============ 10. 首页：数据统计 ============ */
.tg-stats { background: linear-gradient(135deg, #0f3d6e, var(--tg-p)); padding: 58px 0; color: #fff; }
.tg-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; }
.tg-stat b { display: block; font-size: 40px; font-weight: 800; line-height: 1.1; font-family: Arial, sans-serif; }
.tg-stat span { display: block; font-size: 14px; opacity: .84; margin-top: 8px; letter-spacing: 1px; }

/* ============ 11. 首页：CTA 横幅 ============ */
.tg-cta { background: var(--tg-bg-soft); border-top: 1px solid var(--tg-line); padding: 54px 0; }
.tg-cta-in { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.tg-cta h2 { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.tg-cta p { font-size: 15px; color: var(--tg-text-sub); }

/* ============ 12. 内页主体：侧栏 3:9 ============ */
.tg-main { padding: 46px 0 72px; }
.tg-layout { display: grid; grid-template-columns: var(--tg-side) 1fr; gap: 56px; align-items: start; }
.tg-side { position: sticky; top: 104px; }
.tg-side-t {
    background: var(--tg-p); color: #ffffff; padding: 20px 22px;
    font-size: 19px; font-weight: 700; border-radius: 4px 4px 0 0;
}
.tg-side-t span { display: block; font-size: 11px; letter-spacing: 2.5px; opacity: .78; margin-top: 3px; text-transform: uppercase; }
.tg-side-nav { border: 1px solid var(--tg-line); border-top: 0; background: #fff; }
.tg-side-nav li { border-bottom: 1px solid var(--tg-line); }
.tg-side-nav li:last-child { border-bottom: 0; }
.tg-side-nav a {
    display: block; padding: 14px 22px 14px 20px; font-size: 15px;
    color: var(--tg-text-sub); border-left: 3px solid transparent; transition: all .25s;
}
.tg-side-nav a:hover { background: var(--tg-bg-soft); color: var(--tg-p); }
.tg-side-nav li.tg-on a {
    background: var(--tg-p-light); color: var(--tg-p); font-weight: 600;
    border-left-color: var(--tg-p);
}
.tg-side-contact { margin-top: 22px; background: var(--tg-bg-soft); border: 1px solid var(--tg-line); padding: 22px; }
.tg-side-contact b { display: block; font-size: 15px; margin-bottom: 10px; color: var(--tg-text); }
.tg-side-contact p { font-size: 13px; color: var(--tg-text-sub); margin-bottom: 7px; line-height: 1.7; }
.tg-side-contact .tg-tel { font-size: 21px; color: var(--tg-p); font-weight: 700; font-family: Arial, sans-serif; }

/* ============ 13. 新闻列表（图左文右） ============ */
.tg-items { display: flex; flex-direction: column; gap: 20px; }
.tg-item {
    display: flex; gap: 22px; background: #ffffff; border: 1px solid var(--tg-line);
    border-radius: 4px; padding: 20px; transition: all .28s;
}
.tg-item:hover { border-color: var(--tg-p); box-shadow: 0 8px 24px rgba(26, 92, 158, .1); transform: translateX(4px); }
.tg-item-thumb {
    flex-shrink: 0; width: 200px; height: 140px; border-radius: 3px; overflow: hidden;
    background: linear-gradient(135deg, #dfe8f2, #c3d4e6);
    display: flex; align-items: center; justify-content: center;
    color: var(--tg-p); font-size: 13px; letter-spacing: 1px;
}
.tg-item-thumb img { width: 100%; height: 100%; object-fit: cover; }
.tg-item-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.tg-item-date { font-size: 13px; color: var(--tg-p); font-weight: 600; margin-bottom: 8px; font-family: Arial, sans-serif; }
.tg-item-body h3 { font-size: 18px; font-weight: 600; line-height: 1.5; margin-bottom: 10px; }
.tg-item-body h3 a:hover { color: var(--tg-p); }
.tg-item-body p {
    font-size: 14px; color: var(--tg-text-sub); line-height: 1.8; margin-bottom: 12px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tg-item-more { font-size: 13px; color: var(--tg-p); font-weight: 600; margin-top: auto; }

/* ============ 14. 分页器 ============ */
.tg-total { font-size: 13px; color: var(--tg-text-mute); margin-bottom: 16px; }
.tg-page { display: flex; justify-content: center; gap: 8px; margin-top: 38px; flex-wrap: wrap; }
.tg-page a, .tg-page span.tg-cur, .tg-page span.tg-dis {
    display: inline-block; min-width: 38px; height: 38px; line-height: 36px;
    text-align: center; padding: 0 12px; background: #ffffff;
    border: 1px solid var(--tg-line); border-radius: 3px;
    font-size: 14px; color: var(--tg-text-sub); font-family: Arial, sans-serif;
}
.tg-page a:hover { border-color: var(--tg-p); color: var(--tg-p); }
.tg-page span.tg-cur { background: var(--tg-p); border-color: var(--tg-p); color: #ffffff; font-weight: 700; }
.tg-page span.tg-dis { color: #c4c9d0; cursor: not-allowed; }

/* ============ 15. 产品列表（3 列网格卡片） ============ */
.tg-prods { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--tg-gap); }
.tg-prod {
    display: block; background: #ffffff; border: 1px solid var(--tg-line);
    border-radius: 4px; overflow: hidden; transition: all .3s;
}
.tg-prod:hover { border-color: var(--tg-p); box-shadow: 0 12px 30px rgba(26, 92, 158, .13); transform: translateY(-5px); }
.tg-prod-img {
    height: 200px; background: linear-gradient(135deg, #eef3f9, #dce6f1);
    display: flex; align-items: center; justify-content: center;
    color: var(--tg-p); font-size: 13px; letter-spacing: 1px; overflow: hidden;
}
.tg-prod-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.tg-prod:hover .tg-prod-img img { transform: scale(1.06); }
.tg-prod-body { padding: 18px 20px 20px; }
.tg-prod-body h3 {
    font-size: 16px; font-weight: 600; margin-bottom: 8px; line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tg-prod-body p {
    font-size: 13px; color: var(--tg-text-sub); line-height: 1.75; margin-bottom: 12px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tg-prod-tags { display: flex; gap: 7px; flex-wrap: wrap; }
.tg-prod-tags i {
    font-style: normal; font-size: 12px; padding: 3px 10px; border-radius: 3px;
    background: var(--tg-p-light); color: var(--tg-p);
}
.tg-prod-more { display: block; margin-top: 14px; padding-top: 13px; border-top: 1px solid var(--tg-line); font-size: 13px; color: var(--tg-p); font-weight: 600; }

/* ============ 16. 产品详情（左图右文 + 参数表） ============ */
.tg-pd-top { display: grid; grid-template-columns: 5fr 5fr; gap: 64px; align-items: start; margin-bottom: 56px; }
.tg-pd-gallery { border: 1px solid var(--tg-line); border-radius: 4px; overflow: hidden; background: #fff; }
.tg-pd-main-img {
    height: 360px; background: linear-gradient(135deg, #eef3f9, #dce6f1);
    display: flex; align-items: center; justify-content: center; color: var(--tg-p); font-size: 14px;
}
.tg-pd-main-img img { width: 100%; height: 100%; object-fit: contain; }
.tg-pd-info h1 { font-size: 27px; font-weight: 700; line-height: 1.45; margin-bottom: 16px; }
.tg-pd-info .tg-sum { font-size: 15px; color: var(--tg-text-sub); line-height: 1.95; margin-bottom: 22px; }
.tg-pd-meta { border-top: 1px solid var(--tg-line); padding-top: 18px; }
.tg-pd-meta div { display: flex; gap: 12px; font-size: 14px; margin-bottom: 11px; }
.tg-pd-meta dt { color: var(--tg-text-mute); width: 88px; flex-shrink: 0; }
.tg-pd-meta dd { color: var(--tg-text); flex: 1; }
.tg-pd-acts { display: flex; gap: 13px; margin-top: 24px; flex-wrap: wrap; }

.tg-spec { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; }
.tg-spec caption {
    text-align: left; font-size: 19px; font-weight: 700; padding: 0 0 16px;
    color: var(--tg-text); border-left: 4px solid var(--tg-p); padding-left: 12px;
}
.tg-spec th, .tg-spec td { border: 1px solid var(--tg-line); padding: 12px 15px; text-align: left; }
.tg-spec thead th { background: var(--tg-p); color: #ffffff; font-weight: 600; white-space: nowrap; }
.tg-spec tbody tr:nth-child(even) { background: var(--tg-bg-soft); }
.tg-spec tbody th { background: var(--tg-p-light); color: var(--tg-pd); font-weight: 600; width: 190px; }

/* ============ 17. 文章详情 ============ */
.tg-art { max-width: var(--tg-w-narrow); margin: 0 auto; }
.tg-art-head { text-align: center; padding-bottom: 22px; border-bottom: 1px solid var(--tg-line); margin-bottom: 30px; }
.tg-art-head h1 { font-size: 29px; font-weight: 700; line-height: 1.45; margin-bottom: 16px; }
.tg-art-meta { font-size: 13px; color: var(--tg-text-mute); display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.tg-art-meta span b { font-weight: 400; color: var(--tg-text-sub); }
.tg-art-body { font-size: 16px; line-height: 2.05; color: #333; }
.tg-art-body p { margin-bottom: 1.25em; text-indent: 2em; text-align: justify; }
.tg-art-body h2, .tg-art-body h3, .tg-art-body h4 { margin: 1.7em 0 .85em; line-height: 1.45; font-weight: 700; color: var(--tg-text); text-indent: 0; }
.tg-art-body h2 { font-size: 22px; }
.tg-art-body h3 { font-size: 19px; }
.tg-art-body h4 { font-size: 17px; }
.tg-art-body img { display: block; max-width: 100%; height: auto; margin: 1.5em auto; border-radius: 3px; }
.tg-art-body ul, .tg-art-body ol { margin: 0 0 1.25em 2.2em; }
.tg-art-body ul { list-style: disc; }
.tg-art-body ol { list-style: decimal; }
.tg-art-body li { margin-bottom: .5em; line-height: 1.9; }
.tg-art-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 14px; }
.tg-art-body table th, .tg-art-body table td { border: 1px solid var(--tg-line); padding: 10px 13px; }
.tg-art-body table th { background: var(--tg-bg-soft); font-weight: 600; }
.tg-art-body blockquote {
    margin: 1.5em 0; padding: 16px 22px; background: var(--tg-bg-soft);
    border-left: 4px solid var(--tg-p); color: var(--tg-text-sub); font-size: 15px;
}
.tg-art-body blockquote p { text-indent: 0; margin-bottom: 0; }
.tg-art-body a { color: var(--tg-p); text-decoration: underline; }

.tg-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 42px; padding-top: 26px; border-top: 1px solid var(--tg-line); }
.tg-pn a { font-size: 14px; color: var(--tg-text-sub); line-height: 1.7; }
.tg-pn a:hover { color: var(--tg-p); }
.tg-pn .tg-next { text-align: right; }
.tg-pn i { font-style: normal; color: var(--tg-text-mute); margin-right: 8px; }
.tg-pn .tg-next i { margin-right: 0; margin-left: 8px; }

.tg-rel { max-width: var(--tg-w-narrow); margin: 44px auto 0; }
.tg-rel h2 { font-size: 20px; font-weight: 700; padding-left: 12px; border-left: 4px solid var(--tg-p); margin-bottom: 18px; }
.tg-rel ul li { border-bottom: 1px dashed var(--tg-line); }
.tg-rel ul li:last-child { border-bottom: 0; }
.tg-rel ul a { display: flex; justify-content: space-between; gap: 18px; padding: 12px 2px; font-size: 14px; color: var(--tg-text-sub); }
.tg-rel ul a:hover { color: var(--tg-p); }
.tg-rel ul span { color: var(--tg-text-mute); font-size: 13px; flex-shrink: 0; font-family: Arial, sans-serif; }

/* ============ 18. 单页正文（关于我们 / 服务页） ============ */
.tg-single { background: #fff; border: 1px solid var(--tg-line); border-radius: 4px; padding: 40px 46px; }
.tg-single > h1 { font-size: 25px; font-weight: 700; margin-bottom: 8px; }
.tg-single > .tg-sub { font-size: 13px; letter-spacing: 2.5px; color: var(--tg-p); margin-bottom: 28px; text-transform: uppercase; }
.tg-single-body { font-size: 16px; line-height: 2.05; color: #333; }
.tg-single-body p { margin-bottom: 1.2em; text-indent: 2em; text-align: justify; }
.tg-single-body h2, .tg-single-body h3 { margin: 1.6em 0 .8em; font-weight: 700; color: var(--tg-text); text-indent: 0; }
.tg-single-body h2 { font-size: 21px; }
.tg-single-body h3 { font-size: 18px; }
.tg-single-body img { display: block; max-width: 100%; height: auto; margin: 1.4em auto; }
.tg-single-body ul, .tg-single-body ol { margin: 0 0 1.2em 2.2em; }
.tg-single-body ul { list-style: disc; }
.tg-single-body ol { list-style: decimal; }
.tg-single-body li { margin-bottom: .45em; }
.tg-single-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 14px; }
.tg-single-body table th, .tg-single-body table td { border: 1px solid var(--tg-line); padding: 10px 13px; }
.tg-single-body table th { background: var(--tg-bg-soft); }

/* ============ 19. 服务页：服务卡片 ============ */
.tg-svc { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--tg-gap); margin-bottom: 52px; }
.tg-svc-card { background: #fff; border: 1px solid var(--tg-line); border-radius: 4px; padding: 30px 26px; transition: all .3s; }
.tg-svc-card:hover { border-color: var(--tg-p); box-shadow: 0 10px 26px rgba(26, 92, 158, .11); transform: translateY(-4px); }
.tg-svc-card .tg-n {
    display: inline-block; font-size: 13px; font-weight: 700; color: var(--tg-p);
    letter-spacing: 1.5px; margin-bottom: 12px; font-family: Arial, sans-serif;
}
.tg-svc-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.tg-svc-card p { font-size: 14px; color: var(--tg-text-sub); line-height: 1.85; }

/* ============ 20. 空状态 ============ */
.tg-empty {
    text-align: center; color: var(--tg-text-mute); padding: 68px 20px;
    background: #fff; border: 1px dashed var(--tg-line); border-radius: 4px; font-size: 15px;
}
.tg-empty b { display: block; font-size: 17px; color: var(--tg-text-sub); margin-bottom: 8px; font-weight: 600; }

/* ============ 21. 页脚（四栏 + 联系 + 快捷导航 + 版权） ============ */
.tg-foot { background: #1c2530; color: #96a1ad; margin-top: 0; }
.tg-foot-main { max-width: var(--tg-w); margin: 0 auto; padding: 56px 20px 38px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.tg-foot-col h4 { color: #ffffff; font-size: 16px; font-weight: 600; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.tg-foot-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--tg-p); }
.tg-foot-col ul li { margin-bottom: 11px; }
.tg-foot-col ul a { font-size: 14px; color: #96a1ad; }
.tg-foot-col ul a:hover { color: #ffffff; }
.tg-foot-brand .tg-logo-name { color: #ffffff; font-size: 19px; }
.tg-foot-brand p { font-size: 14px; line-height: 1.9; margin-top: 16px; color: #8b96a3; }
.tg-foot-tel { margin-top: 20px; }
.tg-foot-tel b { display: block; font-size: 12px; color: #7f8b98; font-weight: 400; letter-spacing: 1px; margin-bottom: 5px; }
.tg-foot-tel span { font-size: 23px; color: #ffffff; font-weight: 700; font-family: Arial, sans-serif; }
.tg-foot-quick { border-top: 1px solid #2c3742; }
.tg-foot-quick-in {
    max-width: var(--tg-w); margin: 0 auto; padding: 18px 20px;
    display: flex; flex-wrap: wrap; gap: 10px 30px; justify-content: center;
}
.tg-foot-quick a { font-size: 14px; color: #96a1ad; }
.tg-foot-quick a:hover { color: #ffffff; }
.tg-foot-copy { background: #151c25; border-top: 1px solid #2c3742; }
.tg-foot-copy-in { max-width: var(--tg-w); margin: 0 auto; padding: 18px 20px; text-align: center; font-size: 13px; color: #7c8794; line-height: 1.9; }
.tg-foot-copy a { color: #7c8794; }
.tg-foot-copy a:hover { color: #ffffff; }
.tg-foot-copy .tg-icp { margin-top: 4px; }

/* ============ 21.5 宽屏增强（v2.0.51，容器 1600px 下提升信息密度） ============ */
@media (min-width: 1600px) {
    .tg-prods { grid-template-columns: repeat(4, 1fr); }
    .tg-cats { grid-template-columns: repeat(5, 1fr); gap: 34px; }
    .tg-svc { grid-template-columns: repeat(3, 1fr); gap: 34px; }
    .tg-item-thumb { width: 240px; height: 168px; }
    .tg-news-list a { padding: 18px 4px; }
}

/* 1440px：产品保持 4 列，其余栅格间距回收一档 */
@media (max-width: 1599px) and (min-width: 1440px) {
    .tg-prods { grid-template-columns: repeat(4, 1fr); }
    .tg-cats { gap: 24px; }
    .tg-about { gap: 60px; }
    .tg-sec { padding: 88px 0; }
    .tg-banner h1 { font-size: 52px; }
}

/* ============ 22. 响应式 ============ */
/* 1280px（小尺寸笔记本 / 大屏 pad 横屏） */
@media (max-width: 1439px) {
    .tg-c { padding: 0 30px; }
    .tg-sec { padding: 80px 0; }
    .tg-banner-in { padding: 108px 30px; }
    .tg-banner h1 { font-size: 46px; }
    .tg-sec-head h2 { font-size: 34px; }
    .tg-prods { grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .tg-about { gap: 52px; }
    .tg-layout { gap: 40px; }
}

/* 1100px（pad 横屏 / 窄桌面） */
@media (max-width: 1100px) {
    .tg-cats { grid-template-columns: repeat(3, 1fr); }
    .tg-news { grid-template-columns: 1fr; gap: 32px; }
    .tg-prods { grid-template-columns: repeat(2, 1fr); }
    .tg-foot-main { grid-template-columns: 1fr 1fr; gap: 32px; }
    .tg-nav > ul > li > a { padding: 26px 13px; font-size: 15px; }
    .tg-pd-top { gap: 40px; }
    .tg-item-thumb { width: 180px; height: 128px; }
}

/* 1024px（pad 横屏边界，导航开始收紧） */
@media (max-width: 1024px) {
    .tg-c { padding: 0 24px; }
    .tg-header-in { min-height: 74px; gap: 18px; }
    .tg-nav > ul > li > a { padding: 24px 10px; font-size: 14px; }
    .tg-banner h1 { font-size: 40px; }
    .tg-banner-in { padding: 92px 24px; }
    .tg-sec { padding: 72px 0; }
    .tg-sec-head h2 { font-size: 30px; }
    .tg-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 900px（pad 竖屏） */
@media (max-width: 900px) {
    .tg-prods { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .tg-cats { grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .tg-about { grid-template-columns: 1fr; gap: 36px; }
    .tg-pd-top { grid-template-columns: 1fr; gap: 30px; }
    .tg-layout { grid-template-columns: 1fr; gap: 30px; }
    .tg-side { position: static; }
}

@media (max-width: 768px) {
    .tg-layout { grid-template-columns: 1fr; }
    .tg-side { position: static; }
    .tg-about { grid-template-columns: 1fr; gap: 34px; }
    .tg-pd-top { grid-template-columns: 1fr; gap: 28px; }
    .tg-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .tg-banner h1 { font-size: 33px; }
    .tg-banner-in { padding: 66px 20px; }
    .tg-svc { grid-template-columns: 1fr; }
    .tg-pn { grid-template-columns: 1fr; gap: 12px; }
    .tg-pn .tg-next { text-align: left; }
    .tg-single { padding: 28px 22px; }
    .tg-topbar { display: none; }
    /* 移动端导航折叠 */
    .tg-nav-toggle {
        display: flex; align-items: center; justify-content: center;
        width: 44px; height: 44px; border: 1px solid var(--tg-line); border-radius: 4px;
        background: #fff; cursor: pointer; font-size: 20px; color: var(--tg-p);
    }
    .tg-nav { position: absolute; top: 100%; left: 0; right: 0; background: #fff; display: none;
             box-shadow: 0 12px 26px rgba(0, 0, 0, .13); max-height: 68vh; overflow-y: auto; }
    .tg-nav.tg-open { display: block; }
    .tg-nav > ul { display: block; }
    .tg-nav > ul > li > a { padding: 14px 20px; border-bottom: 1px solid var(--tg-line); }
    .tg-nav > ul > li > a::after { display: none; }
    .tg-sub { position: static; opacity: 1; visibility: visible; transform: none;
              box-shadow: none; border-top: 0; background: var(--tg-bg-soft); display: none; }
    .tg-nav > ul > li.tg-sub-open > .tg-sub { display: block; }
    .tg-header-in { min-height: 66px; }
}

@media (max-width: 560px) {
    .tg-c { padding: 0 16px; }
    .tg-cats { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .tg-prods { grid-template-columns: 1fr; }
    .tg-stats-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .tg-foot-main { grid-template-columns: 1fr; gap: 30px; padding: 44px 16px 30px; }
    .tg-banner h1 { font-size: 26px; }
    .tg-banner p { font-size: 15px; }
    .tg-banner-in { padding: 58px 16px; }
    .tg-sec { padding: 56px 0; }
    .tg-sec-head { margin-bottom: 36px; }
    .tg-sec-head h2 { font-size: 25px; }
    .tg-item { flex-direction: column; }
    .tg-item-thumb { width: 100%; height: 180px; }
    .tg-art-head h1 { font-size: 22px; }
    .tg-single-pad { padding: 24px 18px; }
    .tg-page a, .tg-page span.tg-cur, .tg-page span.tg-dis { min-width: 34px; height: 34px; line-height: 32px; padding: 0 8px; }
}

/* ============ 23. 布局工具类（替代内联 style，保持样式全外置） ============ */
.tg-mt-20 { margin-top: 20px; }
.tg-mt-24 { margin-top: 24px; }
.tg-mt-30 { margin-top: 30px; }
.tg-mt-36 { margin-top: 36px; }
.tg-span-all { grid-column: 1 / -1; }
.tg-inherit { color: inherit; }
.tg-single-pad { padding: 34px 40px; }
.tg-rel-full { max-width: none; margin-top: 40px; }

/* 厂商署名（软性广告，链接至官网） */
.xp-powered{margin-top:10px;font-size:12px;line-height:1.7;text-align:center;opacity:.88}
.xp-powered a{color:inherit;text-decoration:underline}
.xp-powered a:hover{opacity:1;text-decoration:underline}

/* ============ 24. 交互动效支撑（v2.0.51，配套 main.js） ============ */
/* 24.1 滚动进场：默认轻微下移+透明，进入视口后复位 */
/* 渐进增强：进场动画的隐藏态只在 JS 已就绪（html.tg-js）时生效。
   若 main.js 未加载或执行报错，.tg-reveal 保持默认可见，正文绝不会被吞掉。 */
html.tg-js .tg-reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .62s cubic-bezier(.22,.61,.36,1), transform .62s cubic-bezier(.22,.61,.36,1);
    will-change: opacity, transform;
}
html.tg-js .tg-reveal.tg-in { opacity: 1; transform: none; }
.tg-reveal { opacity: 1; }
/* 交错进场：同一容器内的子项依次出现，避免整块齐刷刷弹出 */
.tg-reveal-stagger > .tg-reveal:nth-child(1) { transition-delay: .04s; }
.tg-reveal-stagger > .tg-reveal:nth-child(2) { transition-delay: .12s; }
.tg-reveal-stagger > .tg-reveal:nth-child(3) { transition-delay: .20s; }
.tg-reveal-stagger > .tg-reveal:nth-child(4) { transition-delay: .28s; }
.tg-reveal-stagger > .tg-reveal:nth-child(5) { transition-delay: .36s; }
.tg-reveal-stagger > .tg-reveal:nth-child(n+6) { transition-delay: .44s; }

/* 24.2 数字计数：等宽数字，计数过程中宽度不跳动 */
.tg-num {
    font-variant-numeric: tabular-nums;
    font-feature-settings: 'tnum' 1;
}

/* 24.3 导航滚动收缩：下滑后降低高度并加深阴影，给正文让出视觉空间 */
.tg-header { transition: box-shadow .3s ease, background-color .3s ease; }
.tg-header.tg-scrolled { box-shadow: 0 6px 22px rgba(0, 0, 0, .13); }
.tg-header.tg-scrolled .tg-header-in { min-height: 66px; transition: min-height .3s ease; }
.tg-header-in { transition: min-height .3s ease; }

/* 24.4 阅读进度条：贴附导航底部，指示当前阅读位置 */
.tg-progress {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--tg-pd), var(--tg-p));
    z-index: 1001;
    pointer-events: none;
}

/* 24.5 返回顶部：滚动超过阈值后淡入 */
/* 无 JS 时不显示返回顶部按钮与进度条：它们依赖脚本才能工作 */
html:not(.tg-js) .tg-backtop,
html:not(.tg-js) .tg-progress { display: none; }
.tg-backtop {
    position: fixed;
    right: 28px;
    bottom: 34px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 0;
    cursor: pointer;
    background: var(--tg-p);
    color: #ffffff;
    font-size: 20px;
    line-height: 46px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(18, 66, 113, .34);
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background-color .25s ease;
    z-index: 900;
}
.tg-backtop.tg-show { opacity: 1; visibility: visible; transform: none; }
.tg-backtop:hover { background: var(--tg-pd); }

/* 24.6 触屏与小屏：收起浮动按钮的占位，避免遮挡正文 */
@media (max-width: 768px) {
    .tg-backtop { right: 16px; bottom: 20px; width: 42px; height: 42px; line-height: 42px; font-size: 18px; }
    html.tg-js .tg-reveal { transform: translateY(18px); }
}

/* 24.7 尊重系统「减少动态效果」偏好：关闭位移与过渡，直接呈现内容 */
@media (prefers-reduced-motion: reduce) {
    html.tg-js .tg-reveal { opacity: 1; transform: none; transition: none; }
    .tg-backtop { transition: none; }
    .tg-header, .tg-header-in { transition: none; }
}