/* ====== Reset & Base ====== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#0099cc;--primary-dark:#0077a3;--primary-light:#e0f4fa;
  --accent:#e8612e;--accent-dark:#c44a1a;
  --green:#2d8659;--green-light:#e8f5ee;
  --text:#333;--muted:#888;--light:#666;
  --border:#e8e8e8;--bg:#f5f5f5;--bg-alt:#f0f4f8;
  --white:#fff;--dark:#1a2733;--radius:4px;
  --shadow:0 2px 8px rgba(0,0,0,.08);
  --shadow-hover:0 4px 20px rgba(0,0,0,.12);
  --max-width:1200px;
}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Noto Sans SC",sans-serif;
  color:var(--text);background:var(--white);line-height:1.8;font-size:14px}
a{color:var(--text);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 15px}
ul{list-style:none}

/* ====== Header ====== */
.site-header{background:var(--white);box-shadow:0 2px 6px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:90px;
  flex-wrap:nowrap;min-width:0;gap:20px}
.site-logo{display:flex;align-items:center;gap:12px;flex:0 1 auto;min-width:0;max-width:42%}
.site-logo .logo-icon{width:54px;height:54px;border-radius:6px;flex-shrink:0;overflow:hidden;
  box-shadow:0 2px 8px rgba(0,0,0,.08)}
.site-logo .logo-icon img{width:100%;height:100%;object-fit:cover;display:block}
.site-logo .logo-text{display:flex;flex-direction:column;gap:2px;min-width:0;overflow:hidden}
.site-logo .logo-text .cn{font-size:18px;font-weight:700;color:var(--dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-logo .logo-text .en{font-size:11px;color:var(--muted);letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.main-nav{display:flex;gap:0;align-items:center;flex:1 1 auto;justify-content:flex-end;min-width:0}
.main-nav>li{position:relative}
.main-nav>li>a{display:block;padding:0 14px;height:90px;line-height:90px;
  font-size:15px;color:var(--dark);font-weight:500;position:relative;white-space:nowrap}
.main-nav>li>a:hover,.main-nav>li.active>a{color:var(--primary)}
.main-nav>li.active>a::after{content:'';position:absolute;bottom:0;left:50%;
  transform:translateX(-50%);width:30px;height:3px;background:var(--primary);border-radius:2px}
.main-nav .dropdown{position:absolute;top:90px;left:0;min-width:180px;background:var(--white);
  box-shadow:0 4px 16px rgba(0,0,0,.12);border-top:3px solid var(--primary);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s;padding:8px 0;z-index:101}
.main-nav>li:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.main-nav .dropdown a{display:block;padding:10px 20px;font-size:14px;color:var(--text)}
.main-nav .dropdown a:hover{background:var(--primary-light);color:var(--primary)}
.mobile-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text)}

/* ====== Hero / Slides ====== */
.hero{position:relative;overflow:hidden;background:var(--dark)}
.hero-slides{position:relative;height:450px}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease}
.hero-slide.active{opacity:1}
.hero-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-slide::before{content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(0,0,0,.5) 0%,rgba(0,0,0,.2) 60%,transparent 100%)}
.slide-content{position:relative;z-index:2;max-width:560px;padding:0 15px;color:var(--white)}
.slide-content h2{font-size:36px;font-weight:700;margin-bottom:10px;letter-spacing:2px}
.slide-content p{font-size:18px;opacity:.95;font-weight:300}
.slide-content .btn{margin-top:20px}
.hero-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  display:flex;gap:10px;z-index:3;flex-wrap:nowrap;white-space:nowrap;
  max-width:calc(100% - 80px);overflow-x:auto;padding:4px 6px;scrollbar-width:none;-ms-overflow-style:none}
.hero-dots::-webkit-scrollbar{display:none}
.hero-dots button{width:12px;height:12px;border-radius:50%;border:2px solid var(--white);
  background:transparent;cursor:pointer;transition:all .2s;flex-shrink:0}
.hero-dots button.active{background:var(--white)}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(0,153,204,.7);color:var(--white);font-size:20px;
  display:flex;align-items:center;justify-content:center;transition:background .2s}
.hero-arrow:hover{background:var(--primary)}
.hero-arrow.prev{left:20px}
.hero-arrow.next{right:20px}

/* ====== Page Banner (inner pages) ====== */
/* 桌面宽屏（≥1440）下按视口宽度铺满，不再被 aspect-ratio/max-height 比例约束导致右侧留白 */
.page-banner{position:relative;width:100%;min-height:260px;height:440px;
  background:var(--dark);overflow:hidden;display:flex;align-items:center;justify-content:center;
  background-repeat:no-repeat;background-position:center center;background-size:cover;}
.page-banner::before{content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,25,41,.86) 0%,rgba(13,59,102,.78) 55%,rgba(0,153,204,.65) 100%);z-index:1;}
.page-banner::after{content:'';position:absolute;inset:0;
  background-image:radial-gradient(circle at 20% 50%,rgba(0,153,204,.2) 0%,transparent 52%),
    radial-gradient(circle at 80% 30%,rgba(0,153,204,.14) 0%,transparent 42%),
    linear-gradient(180deg,rgba(0,0,0,.1) 0%,rgba(0,0,0,.25) 100%);z-index:1;}
.page-banner .banner-content{position:relative;z-index:2;text-align:center;color:var(--white);padding:28px 20px;max-width:1180px}
.page-banner h1{font-size:38px;font-weight:700;letter-spacing:4px;margin:0 0 12px 0;line-height:1.2;
  text-shadow:0 2px 10px rgba(0,0,0,.35)}
.page-banner p{font-size:17px;opacity:.92;line-height:1.7;margin:0;text-shadow:0 1px 6px rgba(0,0,0,.3)}

/* ====== Breadcrumb ====== */
.breadcrumb{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;
  padding:12px 18px;margin-top:16px;margin-bottom:18px;font-size:14.5px;color:var(--text);
  background:linear-gradient(90deg,rgba(0,153,204,.08) 0%,rgba(0,153,204,0) 75%);
  border-left:4px solid var(--primary);border-radius:0 4px 4px 0;font-weight:500;}
.breadcrumb a{color:var(--primary-dark);font-weight:600;transition:all .18s;
  padding:2px 6px;border-radius:3px}
.breadcrumb a:hover{color:var(--white);background:var(--primary);text-decoration:none}
.breadcrumb span{margin:0 8px;color:var(--primary);font-weight:700;opacity:.75;user-select:none}
.breadcrumb .current{color:var(--accent-dark);font-weight:700;padding:2px 4px;letter-spacing:.5px}

/* ====== Sections ====== */
.section{padding:50px 0}
.section-bg-alt{background:var(--bg-alt)}
.section-head{text-align:center;margin-bottom:35px;padding-bottom:18px;position:relative}
.section-head h2{font-size:28px;font-weight:700;color:var(--green);letter-spacing:2px;position:relative;display:inline-block}
.section-head h2::after{content:'';display:block;position:absolute;left:50%;bottom:-10px;transform:translateX(-50%);
  width:48px;height:3px;background:var(--primary);border-radius:2px}
.section-head .subtitle{font-size:14px;color:var(--muted);margin-top:8px}
.section-head .subtitle::before,.section-head .subtitle::after{content:'- ';color:var(--border)}
.section-head .subtitle::after{content:' -';color:var(--border)}
.section-more{text-align:center;margin-top:30px}
.section-more a{display:inline-block;padding:8px 30px;border:1px solid var(--primary);
  color:var(--primary);border-radius:20px;font-size:14px;transition:all .2s}
.section-more a:hover{background:var(--primary);color:var(--white)}

/* ====== Business Cards ====== */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.biz-card{background:var(--white);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column;min-width:0}
.biz-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.biz-card .card-img{position:relative;display:block;aspect-ratio:4/3;overflow:hidden;
  background:linear-gradient(135deg,var(--primary-light),#ffffff 72%);
  color:var(--primary-dark);}
.biz-card .card-img::before{content:'';position:absolute;inset:0;background-repeat:no-repeat;background-position:center center;background-size:cover;opacity:.85;z-index:0}
.biz-card .card-img .card-noimg{position:absolute;inset:0;z-index:1;display:flex;align-items:center;justify-content:center;
  padding:12px;text-align:center;font-size:15px;font-weight:600;letter-spacing:2px;color:var(--primary-dark);
  text-shadow:0 1px 0 rgba(255,255,255,.55)}
.biz-card .card-img img{position:relative;z-index:2;display:block;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.biz-card:hover .card-img img{transform:scale(1.06)}
.biz-card .card-info{display:block;padding:18px 16px 20px;flex:1;min-width:0;background:var(--white)}
.biz-card .card-info h3{display:block;font-size:16px;font-weight:600;margin:0 0 8px 0;text-align:center;min-width:0;line-height:1.4}
.biz-card .card-info h3 a{color:var(--text);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.biz-card .card-info h3 a:hover{color:var(--primary)}
.biz-card .card-info p{display:-webkit-box;display:box;font-size:13px;color:var(--muted);line-height:1.7;margin:0;
  -webkit-line-clamp:3;-webkit-box-orient:vertical;box-orient:vertical;overflow:hidden;word-break:break-word}

/* ====== Company Intro ====== */
.intro-section{display:flex;align-items:center;gap:40px;flex-wrap:wrap;min-width:0}
.intro-text{flex:1 1 420px;font-size:14px;color:var(--light);line-height:2;text-indent:2em;min-width:0}
.intro-section > *:not(.intro-text){flex:0 0 auto;max-width:100%}
.intro-text p{margin-bottom:10px}

/* ====== News Cards ====== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-item{display:flex;gap:16px;align-items:flex-start}
.news-item .news-date{flex-shrink:0;text-align:center;width:60px;
  background:var(--bg);border-radius:var(--radius);padding:8px 0}
.news-item .news-date .day{font-size:24px;font-weight:700;color:var(--primary)}
.news-item .news-date .month{font-size:12px;color:var(--muted)}
.news-item .news-body h3{font-size:16px;font-weight:600;margin-bottom:6px}
.news-item .news-body h3 a{color:var(--text)}
.news-item .news-body h3 a:hover{color:var(--primary)}
.news-item .news-body p{font-size:13px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ====== Article List ====== */
.article-list .article-item{background:var(--white);border:1px solid var(--border);
  padding:16px 20px;margin-bottom:12px;transition:box-shadow .2s,border-color .2s}
.article-list .article-item:hover{box-shadow:var(--shadow);border-color:var(--primary)}
.article-list .article-cat{flex-shrink:0;font-size:12px;
  font-weight:500;padding:3px 12px;border-radius:999px;white-space:nowrap;
  display:inline-flex;align-items:center}
.article-list .cat-default{background:#e0f4fa;color:#0077a3}
.article-list .cat-aboutus{background:#dbeafe;color:#2563eb}
.article-list .cat-yw{background:#dcfce7;color:#16a34a}
.article-list .cat-company,.article-list .cat-industry{background:#ffedd5;color:#ea580c}
.article-list .cat-case{background:#ede9fe;color:#7c3aed}
.article-list .cat-zhaobxx{background:#cffafe;color:#0891b2}
.article-list .cat-zhongbiaoxx{background:#fee2e2;color:#dc2626}
.article-list .cat-ryzz{background:#fef3c7;color:#d97706}
.article-list .cat-contact{background:#f1f5f9;color:#64748b}
.article-list .article-row1{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.article-list .article-row1 h3{font-size:16px;font-weight:600;flex:1;min-width:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-list .article-row1 h3 a{color:var(--text)}
.article-list .article-row1 h3 a:hover{color:var(--primary)}
.article-list .article-date,.article-list .article-views{font-size:13px;color:var(--muted);
  flex-shrink:0;white-space:nowrap}

/* ====== Article Detail ====== */
.article-detail{background:var(--white);padding:30px;border:1px solid var(--border)}
.article-detail h1{font-size:24px;font-weight:700;margin-bottom:12px;line-height:1.5;
  text-align:center;color:var(--dark)}
.article-meta{color:var(--muted);font-size:13px;text-align:center;
  padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:24px}
.article-meta span{margin:0 12px}
.article-content{font-size:15px;line-height:2;color:var(--text)}
.article-content img{border-radius:var(--radius);margin:16px auto;max-width:100%}
.article-content p{margin-bottom:16px}
.article-content h2,.article-content h3{margin:24px 0 12px;font-weight:600}
.article-content ul,.article-content ol{margin:12px 0 12px 24px}
.article-content li{margin-bottom:6px}
.article-content a{color:var(--primary)}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin-top:30px;
  padding-top:20px;border-top:1px solid var(--border)}
.article-nav a{color:var(--muted);font-size:14px}
.article-nav a:hover{color:var(--primary)}

/* ====== Pagination —— 首页 / 上一页 / 连续数字页 / 下一页 / 尾页 / 共 N 页  ====== */
.pagination{text-align:center;padding:30px 0 10px}
.pagination ul{display:inline-flex;flex-direction:row;flex-wrap:wrap;justify-content:center;gap:0;border:1px solid #d9dde3;
  border-radius:2px;background:#fff;box-sizing:border-box;overflow:hidden}
.pagination li{display:block;margin:0;padding:0;border-right:1px solid #d9dde3;line-height:1}
.pagination li:last-child{border-right:0}
/* 通用按钮（中文按钮如"首页/上一页"较宽，默认 min-width 56px） */
.pagination li a,.pagination li span{display:inline-flex;align-items:center;justify-content:center;
  min-width:56px;height:40px;padding:0 18px;font-size:14px;font-weight:400;color:#4a5568;
  background:#fff;cursor:pointer;text-decoration:none;box-sizing:border-box;transition:background .15s ease,color .15s ease,border-color .15s ease;
  -webkit-user-select:none;user-select:none;letter-spacing:0}
/* 纯数字页码按钮（带 data-page 属性）：更紧凑，min-width 40px */
.pagination li a[data-page],.pagination li span[data-page]{min-width:40px;padding:0 12px;font-size:14px}
/* 可点击按钮 hover：浅蓝背景 + 主色文字 */
.pagination li a:hover{background:#eaf4fc;color:#0088cc}
/* 当前页：实心蓝块 + 白色粗字 */
.pagination li.active span[data-page],
.pagination li.active span{background:#0088cc;color:#fff;font-weight:600;cursor:default;min-width:40px;padding:0 12px}
/* 禁用态（第 1 页的首页/上一页、最后页的下一页/尾页）：灰字 + 无指针 */
.pagination li.disabled{background:#fff}
.pagination li.disabled span{color:#aab2bd;background:#f8fafc;cursor:not-allowed}
/* 「共 N 页」说明文本：靠边框左侧与前面按钮共用 1px 分隔线，不再重复加左边框避免 2px 双线 */
.pagination li.page-info{margin:0}
.pagination li.page-info span{background:#f5f8fb;color:#6b7280;font-weight:500;cursor:default;
  padding:0 18px;min-width:96px}
/* 移动端：字号/尺寸收紧；窄屏时「共 N 页」独占一行（顶部加一条 1px 分隔线） */
@media (max-width:576px){
  .pagination li a,.pagination li span{min-width:44px;height:36px;padding:0 10px;font-size:13px}
  .pagination li a[data-page],.pagination li span[data-page]{min-width:36px;padding:0 8px}
  .pagination li.page-info{width:100%;border-top:1px solid #d9dde3}
  .pagination li.page-info span{height:36px;width:100%;min-width:0;padding:0 14px}
}

/* ====== Layout 2 Column ====== */
.layout-2col{display:grid;grid-template-columns:1fr 280px;gap:24px}
.content-main{min-width:0}
.sidebar .widget{background:var(--white);border:1px solid var(--border);margin-bottom:20px}
.sidebar .widget-title{background:var(--primary);color:var(--white);padding:10px 16px;
  font-size:15px;font-weight:600}
.sidebar .widget-body{padding:12px 16px}
.sidebar .widget-list li{padding:8px 0;border-bottom:1px dashed var(--border)}
.sidebar .widget-list li:last-child{border-bottom:none}
.sidebar .widget-list a{font-size:14px;display:block;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.sidebar .widget-list a:hover{color:var(--primary)}

/* ====== Contact Info Widget ====== */
.contact-widget .contact-list{padding:16px}
.contact-list li{padding:8px 0;font-size:14px;color:var(--text)}
.contact-list li .label{color:var(--muted);margin-right:8px}

/* ====== Category Tabs ====== */
.cat-tabs{display:flex;gap:10px;margin-bottom:24px;flex-wrap:wrap}
.cat-tabs a{display:inline-block;padding:8px 22px;border:1px solid var(--border);
  border-radius:999px;font-size:14px;color:#374151;background:var(--white);transition:all .2s}
.cat-tabs a:hover{border-color:var(--primary);color:var(--primary)}
.cat-tabs a.active{background:var(--primary);border-color:var(--primary);color:var(--white)}

/* ====== Message Form ====== */
.form-card{background:var(--white);padding:30px;border:1px solid var(--border);max-width:700px;margin:0 auto}
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;font-weight:500;font-size:14px;color:var(--dark)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;
  border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;
  transition:border-color .2s;background:var(--white)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,153,204,.1)}
.form-group textarea{min-height:120px;resize:vertical}
.btn{display:inline-block;padding:10px 30px;background:var(--primary);color:var(--white);
  border:none;border-radius:var(--radius);font-size:15px;font-weight:500;cursor:pointer;
  transition:background .2s}
.btn:hover{background:var(--primary-dark)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--white)}
.alert{padding:12px 16px;border-radius:var(--radius);margin-bottom:20px;font-size:14px}
.alert-success{background:#e8f5ee;color:#1a6b3a;border:1px solid #a3d9b8}
.alert-error{background:#fef2f2;color:#c53030;border:1px solid #fcbaba}

/* ====== Search Bar ====== */
.search-bar{display:flex;gap:8px;margin-bottom:24px}
.search-bar input{flex:1;padding:10px 16px;border:1px solid var(--border);
  border-radius:var(--radius);font-size:14px}
.search-bar input:focus{outline:none;border-color:var(--primary)}
.search-bar .btn{padding:10px 24px}

/* ====== Floating Sidebar ====== */
.float-bar{position:fixed;right:15px;top:50%;transform:translateY(-50%);z-index:200;
  display:flex;flex-direction:column;gap:2px}
.float-bar .float-btn{width:56px;height:56px;background:var(--primary);color:var(--white);
  display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s;border:none;font-size:12px;font-family:inherit;line-height:1.3}
.float-bar .float-btn:hover{background:var(--primary-dark)}
.float-bar .float-btn .icon{font-size:20px;margin-bottom:2px}
.float-bar .float-btn.to-top{background:var(--accent)}
.float-bar .float-btn.to-top:hover{background:var(--accent-dark)}

/* ====== Footer ====== */
.site-footer{background:var(--dark);color:#a0aec0;padding:40px 0 0;margin-top:40px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:30px}
.footer-col h4{color:var(--white);font-size:16px;margin-bottom:16px;font-weight:600;
  padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-col p,.footer-col li{color:#a0aec0;font-size:14px;line-height:2.2}
.footer-col a{color:#a0aec0}
.footer-col a:hover{color:var(--white)}
.footer-qr{text-align:center}
.footer-qr .qr-box{width:120px;height:120px;background:var(--white);margin:0 auto 10px;
  display:flex;align-items:center;justify-content:center;border-radius:var(--radius)}
.footer-qr .qr-box span{color:var(--muted);font-size:12px;text-align:center}
.footer-qr p{font-size:13px;text-align:center}
.footer-bottom{text-align:center;padding:16px 0;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:#718096}
.footer-bottom a{color:#718096}
.footer-bottom a:hover{color:var(--white)}

/* ====== Content Panel (single page) ====== */
.content-panel{background:var(--white);border:1px solid var(--border);padding:30px}
.content-panel h1{font-size:24px;font-weight:700;text-align:center;color:var(--dark);
  margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border)}
.content-panel .article-content{font-size:15px;line-height:2}

/* ====== Responsive ====== */
/* 宽屏桌面（≥1920 / 2K/4K）：放宽 container 最大宽度 + 加大 banner 与卡片间距，避免 1920 模式下内容过窄 */
@media(min-width:1920px){
  :root{--max-width:1680px}
  .container{padding:0 40px}
  .site-header{box-shadow:0 2px 10px rgba(0,0,0,.08)}
  .header-inner{height:96px;gap:32px}
  .site-logo .logo-icon{width:60px;height:60px}
  .site-logo .logo-text .cn{font-size:20px}
  .site-logo .logo-text .en{font-size:12px;letter-spacing:.8px}
  .main-nav>li>a{height:96px;line-height:96px;padding:0 20px;font-size:16px}
  .main-nav .dropdown{top:96px}
  .section{padding:72px 0}
  .section-head{margin-bottom:48px;padding-bottom:24px}
  .section-head h2{font-size:34px;letter-spacing:3px}
  .section-head .subtitle{font-size:15px;margin-top:12px}
  .biz-grid{grid-template-columns:repeat(4,1fr);gap:32px}
  .biz-card .card-info{padding:22px 20px 26px}
  .biz-card .card-info h3{font-size:18px;margin-bottom:10px}
  .biz-card .card-info p{font-size:14px}
  .hero-slides{height:560px}
  .slide-content h2{font-size:44px;letter-spacing:3px}
  .slide-content p{font-size:20px}
  .hero-arrow{width:52px;height:52px;font-size:22px}
  .page-banner{height:520px;min-height:420px}
  .page-banner h1{font-size:46px;letter-spacing:6px;margin-bottom:16px}
  .page-banner p{font-size:19px;line-height:1.9}
  .footer-inner{gap:56px;padding-bottom:44px}
  .footer-col h4{font-size:18px;margin-bottom:20px}
  .footer-col p,.footer-col li{font-size:15px;line-height:2.3}
  .layout-2col{grid-template-columns:1fr 340px;gap:36px}
  .news-grid{gap:32px}
  .intro-section{gap:56px}
  .article-detail{padding:44px}
  .float-bar .float-btn{width:62px;height:62px;font-size:13px}
  .float-bar .float-btn .icon{font-size:22px}
}
/* 准宽屏（≥1440px 但 <1920，如 2K 笔记本）— 中等放大 */
@media(min-width:1440px) and (max-width:1919px){
  :root{--max-width:1380px}
  .container{padding:0 32px}
  .section{padding:60px 0}
  .biz-grid{gap:28px}
  .hero-slides{height:500px}
  .page-banner{height:460px;min-height:320px}
  .page-banner h1{font-size:42px;letter-spacing:5px}
  .section-head h2{font-size:30px}
}
/* 过渡断点：窄桌面（≤1200px，笔记本常见分辨率）— 提前收紧 header 间距，避免溢出 */
@media(max-width:1200px){
  .container{max-width:100%;padding:0 20px}
  .site-logo{max-width:36%}
  .site-logo .logo-text .cn{font-size:17px}
  .site-logo .logo-text .en{letter-spacing:.3px;font-size:10.5px}
  .main-nav>li>a{padding:0 12px;font-size:14.5px}
  .biz-grid{gap:18px}
  .footer-inner{gap:30px}
}
@media(max-width:1000px){
  .biz-grid{grid-template-columns:repeat(3,1fr)}
  .layout-2col{grid-template-columns:1fr}
  .float-bar{display:none}
}
/* === 断点1：窄屏桌面 / 平板横屏 (≤ 992px)  — 桌面导航提前收起为汉堡菜单，避免 header 横向溢出 === */
@media(max-width:992px){
  .header-inner{height:72px;gap:12px}
  .site-logo .logo-text .cn{font-size:16px}
  .site-logo .logo-text .en{font-size:10px;line-height:1.2;
    max-width:36ch;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--white);
    flex-direction:column;box-shadow:0 4px 12px rgba(0,0,0,.12);z-index:101;
    align-items:stretch;gap:0;padding:4px 0;max-height:calc(100vh - 72px);overflow-y:auto}
  .main-nav.open{display:flex}
  .main-nav>li{position:static;border-bottom:1px solid #f0f2f5}
  .main-nav>li:last-child{border-bottom:none}
  .main-nav>li>a{display:flex;align-items:center;height:50px;line-height:1;padding:0 24px;
    font-size:15px;white-space:normal;box-sizing:border-box}
  .main-nav>li.active>a{position:relative}
  .main-nav>li.active>a::after{display:none}
  .main-nav>li.active>a::before{content:'';position:absolute;left:0;top:12px;bottom:12px;
    width:3px;background:var(--primary);border-radius:0 2px 2px 0}
  .main-nav .dropdown{position:static;box-shadow:none;border:none;display:flex;
    flex-direction:column;opacity:1;visibility:visible;transform:none;
    padding:4px 0 8px 0;background:#fafbfc}
  .main-nav .dropdown a{display:flex;align-items:center;height:44px;line-height:1;
    padding:0 24px 0 40px;font-size:14px;color:var(--light);
    box-sizing:border-box;border-left:3px solid transparent}
  .main-nav .dropdown a:hover{background:var(--primary-light);color:var(--primary);border-left-color:var(--primary)}
  .mobile-toggle{display:block}
  .container{padding:0 20px}
  .hero-slides{height:320px}
  .slide-content h2{font-size:26px}
  .slide-content p{font-size:15px}
  .page-banner{aspect-ratio:auto;min-height:170px;max-height:none;height:170px}
  .page-banner h1{font-size:24px;margin-bottom:8px}
  .page-banner p{font-size:14px}
  .section{padding:36px 0}
  .section-head h2{font-size:22px}
  .news-grid{grid-template-columns:1fr}
  .biz-grid{grid-template-columns:repeat(3,1fr)}
  .intro-section{gap:24px}
}
/* === 断点2：手机主流尺寸 (≤ 768px)  — 进一步收窄 === */
@media(max-width:768px){
  .header-inner{height:60px}
  .site-logo .logo-icon{width:36px;height:36px}
  .site-logo .logo-text{gap:1px}
  .site-logo .logo-text .cn{font-size:14px}
  .site-logo .logo-text .en{font-size:9px;max-width:30ch}
  .main-nav{top:60px;max-height:calc(100vh - 60px)}
  .main-nav>li>a{height:48px;padding:0 20px;font-size:14px}
  .main-nav .dropdown a{height:42px;padding:0 20px 0 36px;font-size:13px}
  .container{padding:0 15px}
  .hero-slides{height:240px}
  .slide-content h2{font-size:20px;letter-spacing:1px}
  .slide-content p{font-size:13px}
  .page-banner{aspect-ratio:auto;min-height:140px;height:140px}
  .page-banner h1{font-size:20px;letter-spacing:2px;margin-bottom:6px}
  .page-banner p{font-size:13px}
  .biz-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .intro-section{flex-direction:column}
  .article-list .article-cat{padding:6px 8px;font-size:12px;border-radius:6px}
  .article-list .article-row1{flex-wrap:wrap;gap:4px 8px}
  .article-list .article-row1 h3{white-space:normal;overflow:visible;font-size:15px}
  .article-detail,.content-panel,.form-card{padding:16px}
  .section{padding:30px 0}
  .section-head h2{font-size:20px}
  .section-head p{font-size:13px}
  .footer-bottom{padding:14px 15px;font-size:12px;line-height:1.6}
}
/* === 断点3：小屏手机 (≤ 576px) — 隐藏 LOGO 英文名，避免两行挤压 === */
@media(max-width:576px){
  .header-inner{height:56px;gap:8px}
  .site-logo{gap:8px}
  .site-logo .logo-icon{width:34px;height:34px}
  .site-logo .logo-text .en{display:none} /* 小屏只显示中文名，避免挤不下 */
  .site-logo .logo-text .cn{font-size:13px;letter-spacing:0}
  .main-nav{top:56px;max-height:calc(100vh - 56px)}
  .main-nav>li>a{height:46px;font-size:14px;padding:0 16px}
  .main-nav .dropdown a{height:40px;padding:0 16px 0 32px;font-size:13px}
  .container{padding:0 12px}
  .hero-slides{height:210px}
  .slide-content h2{font-size:18px;letter-spacing:.5px;margin-bottom:6px}
  .slide-content p{font-size:12px;line-height:1.5}
  .page-banner{aspect-ratio:auto;min-height:120px;height:120px}
  .page-banner .banner-content{padding:16px 14px}
  .page-banner h1{font-size:18px;letter-spacing:1.5px;margin-bottom:4px}
  .page-banner p{font-size:12px;line-height:1.5}
  .section{padding:24px 0}
  .section-head h2{font-size:18px}
  .section-head h2::after{width:30px;height:2px;bottom:-6px}
  .section-head{padding-bottom:14px;margin-bottom:20px}
  .article-list .article-meta{font-size:11px;gap:8px}
  .article-list .article-item{padding:12px 0;gap:8px}
  .form-card{padding:14px}
  .footer-inner{padding:26px 0}
  .footer-col h4{font-size:15px}
}
/* === 断点4：极窄屏手机 (≤ 480px / 360px) — 业务列变单列、字号再降 === */
@media(max-width:480px){
  .biz-grid{grid-template-columns:1fr;gap:14px}
  .article-list .article-row1 h3{font-size:14px}
  .article-list .article-cat{font-size:11px;padding:5px 6px}
  .article-list .article-date,.article-list .article-views{font-size:11px}
  .breadcrumb{font-size:12px;padding:10px 0}
  .footer-bottom{font-size:11px}
  .btn{padding:10px 18px;font-size:13px}
}
@media(max-width:380px){
  .header-inner{height:52px}
  .site-logo .logo-icon{width:32px;height:32px}
  .site-logo .logo-text .cn{font-size:12px}
  .container{padding:0 10px}
  .hero-slides{height:180px}
  .slide-content h2{font-size:16px}
  .slide-content p{font-size:11px}
  .page-banner{aspect-ratio:auto;min-height:108px;height:108px}
  .page-banner .banner-content{padding:14px 10px}
  .page-banner h1{font-size:16px;letter-spacing:1px;margin-bottom:2px}
  .page-banner p{font-size:11px}
  .section{padding:20px 0}
  .section-head h2{font-size:17px}
  .article-detail,.content-panel,.form-card{padding:12px}
  .main-nav>li>a{height:44px;font-size:13px;padding:0 14px}
  .main-nav .dropdown a{height:38px;padding:0 14px 0 28px;font-size:12px}
}