/* ===== 和众通信官网 全站样式 ===== */
:root{
  color-scheme:only light;            /* only light：显式退出「强制深色/自动深色」（Chrome、安卓浏览器据此不再反色） */
  --gold:#C9A227; --gold-l:#E4C766; --gold-d:#A8851A;
  --blue:#1B5FAA; --blue-d:#12497F; --blue-l:#EAF1F9;
  --ink:#22303E; --ink-2:#465565; --muted:#6B7785;
  --bg:#FFFFFF; --bg-soft:#F6F8FA; --line:#E5EAF0;
  --wrap:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--blue-d);color:#cfe0f2;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px}
.topbar a{color:#fff}
.topbar a:hover{color:var(--gold-l)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;height:80px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:46px;height:46px;border-radius:8px;border:1px dashed #B9C4D0;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted);text-align:center;line-height:1.25;flex:0 0 auto}
.brand-txt strong{display:block;font-size:19px;letter-spacing:1px;color:var(--blue-d);font-weight:700}
.brand-txt span{font-size:10px;letter-spacing:2px;color:var(--muted);text-transform:uppercase}
.main-nav{margin-left:auto;display:flex;gap:22px;align-items:center}
.main-nav a{font-size:14px;padding:6px 0;white-space:nowrap;border-bottom:2px solid transparent;transition:.2s}
.main-nav a:hover{color:var(--blue)}
.main-nav a.active{color:var(--blue);border-bottom-color:var(--gold)}
.nav-toggle{display:none;background:none;border:0;color:var(--blue-d);cursor:pointer;margin-left:auto;padding:6px 2px;width:36px;height:36px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:22px;height:2.5px;border-radius:2px;background:currentColor;transition:.22s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* ---------- 首页主视觉 ---------- */
.hero{position:relative;min-height:460px;display:flex;align-items:center;color:#fff;overflow:hidden;
  background:linear-gradient(118deg,#12497F 0%,#1B5FAA 55%,#2C74C4 100%)}
.hero::after{content:"";position:absolute;right:-90px;top:-80px;width:380px;height:380px;border-radius:38% 62% 40% 60%;background:rgba(201,162,39,.24)}
.hero::before{content:"";position:absolute;right:140px;top:210px;width:200px;height:200px;border-radius:55% 45% 60% 40%;background:rgba(255,255,255,.08)}
.hero .wrap{position:relative;z-index:2;padding-top:60px;padding-bottom:60px}
.hero-tag{display:inline-block;font-size:12px;letter-spacing:3px;color:var(--gold-l);border:1px solid rgba(228,199,102,.5);padding:4px 12px;border-radius:2px;margin-bottom:22px}
.hero h1{font-size:42px;line-height:1.35;letter-spacing:2px;margin-bottom:18px;font-weight:700}
.hero p{font-size:17px;max-width:600px;color:rgba(255,255,255,.88)}
.hero-actions{margin-top:32px;display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 通用按钮 ---------- */
.btn{display:inline-block;padding:12px 32px;font-size:15px;border-radius:3px;transition:.22s;border:1px solid transparent}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:var(--gold-d)}
.btn-ghost{border-color:rgba(255,255,255,.65);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-line{border-color:var(--blue);color:var(--blue)}
.btn-line:hover{background:var(--blue);color:#fff}

/* ---------- 数据条 ---------- */
.stats-bar{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.stats-bar .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding:34px 24px;text-align:center}
.stats-bar b{display:block;font-size:38px;line-height:1.15;color:var(--blue);letter-spacing:1px}
.stats-bar .item>span{font-size:13px;color:var(--muted)}
.stats-bar .item+.item{border-left:1px solid var(--line)}
/* 汉字数值（如「数千」）：缩到与数字视觉等大 */
.stats-bar b.txt{font-size:30px;letter-spacing:2px}

/* ---------- 区块通用 ---------- */
.section{padding:76px 0}
.section.soft{background:var(--bg-soft)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head .eyebrow{font-size:12px;letter-spacing:3px;color:var(--gold-d);margin-bottom:8px}
.sec-head h2{font-size:30px;letter-spacing:1px;font-weight:700}
.sec-head .bar{width:46px;height:3px;background:var(--gold);margin:14px auto 12px}
.sec-head p{color:var(--muted);font-size:14px}
.sec-head.left{text-align:left}
.sec-head.left .bar{margin-left:0}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:26px 26px 28px;transition:.25s}
.card:hover{box-shadow:0 10px 28px rgba(27,95,170,.12);transform:translateY(-2px);border-color:#D6E1EE}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14px;color:var(--muted)}
.card .more{display:inline-block;margin-top:16px;font-size:13px;color:var(--blue)}
.card .more:hover{color:var(--gold-d)}
/* 三大业务板块（图文交错大卡） */
.biz-list{display:flex;flex-direction:column;gap:22px}
.biz-row{display:grid;grid-template-columns:42% 1fr;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(20,40,70,.05);transition:box-shadow .3s ease-out,transform .3s ease-out,border-color .3s ease-out}
.biz-row:hover{box-shadow:0 18px 44px rgba(20,40,70,.11);transform:translateY(-2px);border-color:#D8E3F0}
.biz-row.rv.in:hover{transform:translateY(-2px)}
.biz-row.rev{grid-template-columns:1fr 42%}
.biz-row.rev .biz-media{order:2}
.biz-media{position:relative;min-height:300px;overflow:hidden;background:#F1F5FA;border-right:1px solid #E8EEF6}
.biz-row.rev .biz-media{border-right:0;border-left:1px solid #E8EEF6}
.biz-media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .7s cubic-bezier(.22,.8,.3,1)}
.biz-row:hover .biz-media img{transform:scale(1.035)}
.biz-body{padding:36px 44px;display:flex;flex-direction:column;justify-content:center}
.biz-body h3{display:flex;align-items:center;gap:12px;font-size:21px;letter-spacing:.5px}
.biz-ico{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--blue-l);color:var(--blue);flex:0 0 auto}
.biz-ico svg{width:20px;height:20px}
.biz-row[data-accent="violet"] .biz-ico{background:#EFEBFF;color:#6F55D8}
.biz-row[data-accent="teal"] .biz-ico{background:#E5F4F3;color:#12857F}
.biz-body p{margin-top:12px;font-size:14.5px;line-height:1.9;color:var(--muted)}
.biz-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.biz-tags li{font-size:12.5px;color:var(--ink-2);background:#FBFCFE;border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:.2s}
.biz-tags li:hover{border-color:#BCD4EC;background:var(--blue-l);color:var(--blue)}
.biz-body .more{display:inline-block;align-self:flex-start;margin-top:20px;font-size:13.5px;color:var(--blue)}
.biz-body .more:hover{color:var(--gold-d)}
@media (max-width:980px){
  .biz-body{padding:30px 30px}
  .biz-media{min-height:260px}
}
@media (max-width:860px){
  .biz-row,.biz-row.rev{grid-template-columns:1fr}
  .biz-row.rev .biz-media{order:0}
  .biz-media{min-height:0;height:212px}
  .biz-body{padding:26px 24px 28px}
  .biz-body h3{font-size:19px}
}
.biz-card .more{margin-top:20px}

/* ---------- 关于我们（图文） ---------- */
.about-row{display:flex;gap:52px;align-items:center}
.about-media{flex:0 0 440px;height:300px;border-radius:6px;background:linear-gradient(135deg,#E7EFF8,#F7F1DC);border:1px dashed #C7D2DF;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;text-align:center;padding:20px}
.about-body h3{font-size:22px;margin-bottom:16px;letter-spacing:.5px}
.about-body p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
.check-list{margin-top:20px}
.check-list li{font-size:14px;color:var(--ink-2);padding-left:24px;position:relative;margin-bottom:8px}
.check-list li::before{content:"";position:absolute;left:4px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--gold)}

/* ---------- 案例 ---------- */
.case{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff;transition:.25s}
.case:hover{box-shadow:0 10px 26px rgba(27,95,170,.1)}
.case-ph{height:150px;background:linear-gradient(135deg,#DCE8F5,#F3E9CB);display:flex;align-items:center;justify-content:center;color:#8695A6;font-size:12px}
.case-body{padding:16px 18px 20px}
.case-body h4{font-size:15px;margin-bottom:8px}
.case-body p{font-size:13px;color:var(--muted)}

/* ---------- 新闻 ---------- */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:6px;padding:26px 24px;transition:.25s}
.news-item:hover{border-color:#D6E1EE;box-shadow:0 10px 26px rgba(27,95,170,.1)}
.news-item .date{font-size:12px;color:var(--gold-d);letter-spacing:1px}
.news-item h4{font-size:16px;margin:10px 0 10px;line-height:1.6}
.news-item p{font-size:13px;color:var(--muted)}
.news-more{text-align:center;margin-top:40px}

/* ---------- CTA ---------- */
.cta{background:var(--blue-d);color:#fff;text-align:center;padding:56px 0}
.cta h2{font-size:26px;margin-bottom:12px;letter-spacing:1px}
.cta p{font-size:15px;color:rgba(255,255,255,.82);margin-bottom:26px}

/* ---------- 子页头图 ---------- */
.page-hero{background:linear-gradient(118deg,#12497F,#1B5FAA 70%,#2C74C4);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-70px;top:-80px;width:280px;height:280px;border-radius:40% 60% 45% 55%;background:rgba(201,162,39,.2)}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:34px;letter-spacing:2px;margin-bottom:10px}
.page-hero p{font-size:15px;color:rgba(255,255,255,.82)}
.crumb{margin-top:16px;font-size:13px;color:rgba(255,255,255,.7)}
.crumb a:hover{color:var(--gold-l)}

/* ---------- 联系页 ---------- */
.contact-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.info-list li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);font-size:14px}
.info-list .k{flex:0 0 76px;color:var(--muted)}
.info-list .v{color:var(--ink);font-weight:500}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:4px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff;outline:none;transition:.2s}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(27,95,170,.08)}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:12px;color:var(--muted);margin-top:12px}
/* 蜜罐字段：正常用户看不见也不会聚焦，只有自动填表机器人会填 → 服务端据此丢弃 */
.hp-field{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
/* 联系页 · 位置导航卡 */
.map-card{margin-top:26px;border:1px solid var(--line);border-radius:10px;padding:18px;background:var(--bg-soft)}
.map-figure{margin:0 0 16px;border-radius:8px;overflow:hidden;border:1px solid #E2E9F1;background:#EEF2F6;line-height:0}
.map-figure img{width:100%;height:auto;display:block;border-radius:8px}
.map-head{display:flex;gap:10px;align-items:flex-start}
.map-pin{flex:0 0 auto;line-height:0;margin-top:3px}
.map-txt b{display:block;font-size:15px;color:var(--blue-d);font-weight:700;margin-bottom:3px}
.map-txt span{display:block;font-size:13px;color:var(--ink-2);line-height:1.7}
.map-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.map-actions .btn{flex:1 1 128px;text-align:center;padding:10px 14px;font-size:13.5px;border-radius:4px}
.btn-outline{border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}

/* ---------- 页脚 ---------- */
.site-footer{background:#16293C;color:#9FB2C4;font-size:13.5px;padding:52px 0 22px}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:34px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:500}
.site-footer li{margin-bottom:9px}
.site-footer a:hover{color:var(--gold-l)}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;font-size:12.5px;color:#6E8299;flex-wrap:wrap;gap:8px}
.f-ver{font-size:11.5px;color:#54687D;letter-spacing:.4px;font-variant-numeric:tabular-nums}  /* 页脚版本号：用于确认线上是哪一版 */

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .grid-3,.grid-4,.news-list{grid-template-columns:repeat(2,1fr)}
  .about-row,.contact-layout{flex-direction:column;display:block}
  .about-media{width:100%;margin-bottom:28px}
  .f-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stats-bar .wrap{grid-template-columns:repeat(2,1fr);gap:24px}
  .stats-bar .item+.item{border-left:0}
}
/* ---------- 页内子导航（AI 业务三条线） ---------- */
.subnav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:76px;z-index:90}
.subnav .wrap{display:flex;gap:8px;overflow-x:auto;padding-top:12px;padding-bottom:12px}
.subnav a{flex:0 0 auto;padding:8px 20px;border:1px solid var(--line);border-radius:999px;font-size:14px;color:var(--ink-2);transition:.2s}
.subnav a:hover{border-color:var(--blue);color:var(--blue)}
.subnav a.on{background:var(--blue);border-color:var(--blue);color:#fff}

/* ---------- 流程条 ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.flow-item{background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px 22px;position:relative}
.flow-item .no{font-size:12px;letter-spacing:1px;color:var(--gold-d);margin-bottom:8px}
.flow-item h4{font-size:15px;margin-bottom:8px}
.flow-item p{font-size:13px;color:var(--muted)}
.flow-item::after{content:"";position:absolute;left:0;top:0;width:3px;height:28px;background:var(--gold);border-radius:3px}

/* ---------- 数据集 ---------- */
.tag-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:36px}
.tag{padding:6px 16px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--ink-2);background:#fff}
.tag.on{background:var(--blue-l);border-color:#B9D4EF;color:var(--blue)}
.ds-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ds-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px;transition:.25s}
.ds-card:hover{border-color:#D6E1EE;box-shadow:0 10px 26px rgba(27,95,170,.1)}
.ds-card h3{font-size:15px;line-height:1.6;margin-bottom:10px}
.ds-card p{font-size:13px;color:var(--muted);margin-bottom:14px}
.ds-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--blue);border-top:1px solid var(--line);padding-top:12px}
.ds-meta span{background:var(--blue-l);padding:2px 9px;border-radius:3px}

@media (max-width:980px){.flow,.ds-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:720px){.flow,.ds-grid{grid-template-columns:1fr}.subnav{top:68px}}

/* ---------- 响应式主体 ---------- */
@media (max-width:720px){
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 24px 20px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px rgba(0,0,0,.06)}
  .main-nav.open{display:flex}
  .main-nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
  .site-header .wrap{height:68px}
  .hero{min-height:400px}
  .hero h1{font-size:28px}
  .hero p{font-size:15px}
  .section{padding:52px 0}
  .sec-head h2{font-size:24px}
  .grid-3,.grid-4,.news-list,.form-grid{grid-template-columns:1fr}
  .topbar .wrap{justify-content:center}
  .topbar .wrap span:last-child{display:none}
  .page-hero{padding:48px 0 40px}
  .page-hero h1{font-size:26px}
  .f-grid{grid-template-columns:1fr}
}

/* ---------- 多级导航（参考站栏目结构） ---------- */
.nav-item{position:relative}
/* 触发链接加高，让悬停区域一直延伸到下拉面板边缘 */
.nav-item>a{display:inline-block;padding-top:18px;padding-bottom:18px}
.nav-item:has(.nav-sub)>a::after{content:"";display:inline-block;width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg);margin-left:7px;margin-bottom:3px;transition:transform .24s ease-out;opacity:.55}
.nav-item:hover:has(.nav-sub)>a::after,.nav-item.open:has(.nav-sub)>a::after{transform:rotate(225deg)}
.nav-sub{display:block;position:absolute;top:calc(100% + 10px);left:-14px;min-width:180px;background:rgba(255,255,255,.96);backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);border:1px solid rgba(255,255,255,.75);outline:1px solid rgba(20,40,70,.06);border-radius:10px;box-shadow:0 22px 60px rgba(20,40,70,.16),0 2px 10px rgba(20,40,70,.06);padding:8px 0;z-index:120;opacity:0;visibility:hidden;transform:translateY(-8px);clip-path:inset(0 0 101% 0 round 10px);transition:clip-path .38s cubic-bezier(.22,.8,.3,1),opacity .3s ease-out,transform .38s cubic-bezier(.22,.8,.3,1),visibility 0s linear .4s}
/* 悬停桥：盖住大类链接与面板之间 10px 空隙，鼠标在两者间往返不会断开 hover。
   注意：桥必须挂在 .nav-item 上——挂在 .nav-sub 上会被面板自身的
   clip-path 连带裁剪，命中测试失效，鼠标穿缝时面板会收起再重播动画 */
.nav-item:has(.nav-sub)::before{content:"";position:absolute;top:calc(100% - 2px);left:-14px;width:210px;height:14px;z-index:118}
.nav-item:hover>.nav-sub,.nav-item.open>.nav-sub{opacity:1;visibility:visible;transform:translateY(0);clip-path:inset(0 0 -8% 0 round 10px);transition-delay:0s}
.nav-sub a{display:block;margin:2px 8px;padding:8px 12px;font-size:13.5px;border:0;border-radius:7px;white-space:nowrap;color:var(--ink-2);transition:background .18s,color .18s;opacity:0;transform:translateY(-7px)}
.nav-item:hover>.nav-sub a,.nav-item.open>.nav-sub a{opacity:1;transform:translateY(0)}
.nav-item:hover>.nav-sub a:nth-child(1),.nav-item.open>.nav-sub a:nth-child(1){transition:background .18s,color .18s,opacity .26s ease-out .07s,transform .26s ease-out .07s}
.nav-item:hover>.nav-sub a:nth-child(2),.nav-item.open>.nav-sub a:nth-child(2){transition:background .18s,color .18s,opacity .26s ease-out .12s,transform .26s ease-out .12s}
.nav-item:hover>.nav-sub a:nth-child(3),.nav-item.open>.nav-sub a:nth-child(3){transition:background .18s,color .18s,opacity .26s ease-out .17s,transform .26s ease-out .17s}
.nav-item:hover>.nav-sub a:nth-child(4),.nav-item.open>.nav-sub a:nth-child(4){transition:background .18s,color .18s,opacity .26s ease-out .22s,transform .26s ease-out .22s}
.nav-item:hover>.nav-sub a:nth-child(5),.nav-item.open>.nav-sub a:nth-child(5){transition:background .18s,color .18s,opacity .26s ease-out .27s,transform .26s ease-out .27s}
.nav-item:hover>.nav-sub a:nth-child(6),.nav-item.open>.nav-sub a:nth-child(6){transition:background .18s,color .18s,opacity .26s ease-out .32s,transform .26s ease-out .32s}
.nav-item:hover>.nav-sub a:nth-child(n+7),.nav-item.open>.nav-sub a:nth-child(n+7){transition:background .18s,color .18s,opacity .26s ease-out .36s,transform .26s ease-out .36s}
.nav-sub a:hover{background:var(--blue-l);color:var(--blue)}
/* 快速回到刚收起的大类（配合 main.js 的 .no-anim）：跳过子项错峰入场直接展开，不"重新弹一遍" */
.nav-item.no-anim>.nav-sub{transition:none!important}
.nav-item.no-anim>.nav-sub a{transition:background .18s,color .18s!important}

/* ---------- 正文页 ---------- */
.article-body{max-width:880px;margin:0 auto;font-size:15.5px;color:var(--ink-2)}
.article-body h2{font-size:19px;color:var(--ink);margin:30px 0 12px;padding-left:12px;border-left:3px solid var(--gold);line-height:1.6}
.article-body p{margin-bottom:16px;line-height:1.95}
.art-meta{font-size:13px;color:var(--muted);margin-bottom:14px}
.art-lead{background:var(--bg-soft);border-left:3px solid var(--blue);padding:14px 18px;font-size:14px;line-height:1.85;color:var(--ink-2);margin-bottom:26px;border-radius:4px}
.art-nav{margin-top:44px;text-align:center}
.list-page{max-width:880px;margin:0 auto}
.news-ul li a{display:flex;gap:18px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;align-items:baseline}
.news-ul .d{flex:0 0 92px;color:var(--muted);font-size:13px}
.news-ul a:hover .t{color:var(--blue)}

@media (max-width:720px){
  .nav-item{width:100%}
  .nav-item:has(.nav-sub)::before{display:none}
  .nav-sub{position:static;box-shadow:none;border:0;outline:0;padding:0 0 6px 14px;min-width:0;background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;border-radius:0;opacity:1;visibility:visible;transform:none;transition:none;clip-path:none}
  .nav-sub a,.nav-item:hover>.nav-sub a,.nav-item.open>.nav-sub a{opacity:1;transform:none;transition:background .18s,color .18s}
  .nav-item.open>.nav-sub,.main-nav .nav-item.open>.nav-sub{opacity:1;visibility:visible;transform:none;clip-path:none;transition:none}
  .nav-sub a{padding:7px 0;font-size:13px;color:var(--muted)}
  .news-ul li a{flex-direction:column;gap:4px}
}

/* ================= 图片素材板块 ================= */
/* 页头 logo：由官方 AI 矢量稿渲染（图形 + 中文标准字，不含旧主体名小字） */
.brand-logo{height:52px;width:auto;display:block;border-radius:5px;flex:0 0 auto}
.site-header .brand{gap:0}

/* 首页 hero 背景图 + 渐变遮罩（保证文字可读） */
.hero.hero-media{background:#0C2A48}
.hero-bg{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-bg img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.02)}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(8,28,50,.95) 0%,rgba(14,56,98,.88) 40%,rgba(20,80,140,.55) 72%,rgba(20,80,140,.35) 100%)}
.hero.hero-media .wrap{z-index:3}

/* 页面内页 hero 背景图 */
.page-hero.has-img{background:#0C2A48}
.page-hero.has-img .hero-bg::after{background:linear-gradient(90deg,rgba(8,28,50,.92) 0%,rgba(16,62,108,.72) 55%,rgba(18,73,127,.35) 100%)}

/* 品牌横幅条（官方整幅 banner 原图直出） */
.band{display:block;position:relative;background:#12497F;overflow:hidden;height:clamp(200px,23vw,330px)}
.band img{display:block;width:100%;height:100%;object-fit:cover;object-position:left center}
/* 品牌标语band（文字居中，图为已去字的科技底图） */
.brand-band{background:url(../img/brand-band-clean.jpg) center center/cover no-repeat;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff}
.brand-band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,62,110,.55),rgba(24,62,110,.15) 45%,rgba(24,62,110,.35))}
.brand-band .brand-slogan{position:relative;font-size:clamp(20px,2.75vw,40px);letter-spacing:2px;line-height:1.35;font-weight:700;white-space:nowrap;color:#fff;text-shadow:0 2px 12px rgba(0,20,50,.45)}

/* 图文两栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split>.pic img{width:100%;display:block;border-radius:8px;box-shadow:0 14px 36px rgba(20,45,80,.14)}
.split>.txt h3{font-size:23px;color:var(--ink);margin-bottom:14px;letter-spacing:.5px}
.split>.txt p{color:var(--ink-2);font-size:15px;line-height:1.95;margin-bottom:14px}
.split.rev>.pic{order:2}

/* 团队照片墙 */
.photo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.photo-grid img{width:100%;height:190px;object-fit:cover;border-radius:6px;display:block;transition:.3s}
.photo-grid img:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(20,45,80,.18)}

/* 资质证书墙 */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cert-grid figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.cert-grid img{width:100%;height:236px;object-fit:contain;background:#F8FAFC;padding:8px;display:block}
.cert-grid figcaption{font-size:12.5px;color:var(--muted);text-align:center;padding:9px 6px;border-top:1px solid var(--line)}

/* ---------- 资质证书滑动墙 ---------- */
.cert-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:26px}
.cert-tabs button{font:inherit;font-size:14px;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 20px;cursor:pointer;transition:.2s}
.cert-tabs button:hover{border-color:var(--blue);color:var(--blue)}
.cert-tabs button.on{background:var(--blue);border-color:var(--blue);color:#fff}
.cert-tabs button em{font-style:normal;font-size:12px;opacity:.75;margin-left:4px}
.cert-carousel{position:relative}
.cert-track{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding:4px 2px 16px;scrollbar-width:none}
.cert-track::-webkit-scrollbar{display:none}
.cert-item{margin:0;flex:0 0 calc((100% - 36px)/3);scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;cursor:zoom-in;transition:.25s}
.cert-item:hover{box-shadow:0 10px 26px rgba(27,95,170,.13);border-color:#D6E1EE;transform:translateY(-2px)}
.cert-thumb{background:#F8FAFC;padding:10px;height:250px;display:flex;align-items:center;justify-content:center}
.cert-thumb img{max-width:100%;max-height:100%;object-fit:contain;display:block}
.cert-item figcaption{padding:12px 14px;border-top:1px solid var(--line);min-height:76px}
.cert-item figcaption b{display:block;font-size:14px;color:var(--ink);line-height:1.5;font-weight:600}
.cert-item figcaption span{display:block;font-size:12px;color:var(--muted);margin-top:5px;line-height:1.5}
.cert-arrow{position:absolute;top:calc(50% - 34px);transform:translateY(-50%);width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--blue);font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:3;box-shadow:0 4px 14px rgba(20,50,90,.12);transition:.2s}
.cert-arrow:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.cert-arrow.prev{left:-10px}
.cert-arrow.next{right:-10px}
.cert-hint{text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px}
.cert-lightbox{position:fixed;inset:0;background:rgba(12,26,45,.88);z-index:999;display:flex;align-items:center;justify-content:center;padding:28px;cursor:zoom-out}
.cert-lightbox[hidden]{display:none}
.cert-lightbox figure{margin:0;max-width:min(92vw,880px);max-height:90vh;display:flex;flex-direction:column;align-items:center}
.cert-lightbox img{max-width:100%;max-height:calc(90vh - 60px);object-fit:contain;background:#fff;border-radius:4px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.cert-lightbox figcaption{color:#fff;font-size:14px;margin-top:14px;text-align:center;line-height:1.6}
.cert-close{position:absolute;top:18px;right:22px;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.08);color:#fff;font-size:24px;line-height:1;cursor:pointer}
.cert-close:hover{background:rgba(255,255,255,.2)}

/* 客户 logo 墙 */
/* ---------- 合作客户：深色带 + 白色卡片 + 三行无限横向滚动 ---------- */
.clients{position:relative;background:radial-gradient(120% 170% at 50% -12%,#1B3552 0%,#101E30 54%,#0B1522 100%);margin-top:26px;padding:52px 0 48px;overflow:hidden}
.clients::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,0) 30%)}
.clients-row{display:flex;overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 8%,#000 92%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 8%,#000 92%,transparent 100%)}
.clients-row + .clients-row{margin-top:14px}
.clients-track{display:flex;flex:0 0 auto;animation:clientsMarquee 72s linear infinite;will-change:transform}
.clients-track.rev{animation-direction:reverse}
.clients-row:nth-child(2) .clients-track{animation-duration:86s}
.clients-row:nth-child(3) .clients-track{animation-duration:78s;animation-delay:-24s}
@keyframes clientsMarquee{from{transform:translate3d(0,0,0)}to{transform:translate3d(-100%,0,0)}}
.clients-card{flex:0 0 auto;width:196px;height:82px;margin-right:14px;background:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;padding:9px 13px;box-shadow:0 8px 22px rgba(0,0,0,.26),0 1px 2px rgba(0,0,0,.16);transition:transform .25s ease-out,box-shadow .25s ease-out}
.clients-card img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block;opacity:.94;transition:opacity .25s}
.clients-row:hover .clients-track{animation-play-state:paused}
.clients-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(0,0,0,.34)}
.clients-card:hover img{opacity:1}
.clients-note{text-align:center;font-size:12.5px;color:var(--muted);margin-top:14px}
@media (prefers-reduced-motion:reduce){.clients-track{animation:none}}

/* 位置卡内的地图图（后续换成实景地图截图时启用） */
.map-card img{width:100%;height:auto;display:block;border-radius:8px}

@media (max-width:980px){
  .split{grid-template-columns:1fr;gap:28px}
  .split.rev>.pic{order:0}
  .photo-grid{grid-template-columns:repeat(2,1fr)}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .clients-card{width:160px;height:68px;margin-right:12px;padding:8px 11px}
  .brand-logo{height:42px}
  .cert-item{flex:0 0 calc((100% - 18px)/2)}
  .cert-thumb{height:230px}
  .cert-arrow{display:none}
}
@media (max-width:720px){
  .photo-grid img{height:150px}
  .cert-grid img{height:180px}
  .clients{padding:32px 0 28px}
  .clients-card{width:134px;height:60px;margin-right:10px;padding:8px 10px;border-radius:9px}
  .clients-row + .clients-row{margin-top:10px}
  .clients-track{animation-duration:58s}
  .cert-item{flex:0 0 78%}
  .cert-thumb{height:200px}
  .cert-item figcaption{min-height:0}
  .cert-tabs button{padding:7px 14px;font-size:13px}
  .brand-band .brand-slogan{font-size:20px;letter-spacing:1px;line-height:1.6;font-weight:700;white-space:normal;max-width:100%;padding:0 14px}
}

/* 关于页公司简介配图 */
.about-media-pic{padding:0;border:0;background:#EEF3F9;overflow:hidden}
.about-media-pic img{width:100%;height:100%;object-fit:cover;display:block}

/* 触屏/无悬停环境：点击展开子菜单（配合 main.js 的 .open 类） */
.nav-item.open > .nav-sub{display:block}
@media (max-width:980px){
  .main-nav .nav-item.open > .nav-sub{position:static;box-shadow:none;border:0;padding:2px 0 6px 16px;min-width:0}
  .main-nav .nav-item.open > .nav-sub a{padding:8px 0;font-size:13.5px;color:var(--muted)}
}

/* 页脚备案号链接保持原色 */
.f-bottom a{color:inherit;text-decoration:none;border-bottom:1px dotted rgba(255,255,255,.35)}
.f-bottom a:hover{color:var(--gold-l);border-bottom-color:var(--gold-l)}

/* 页脚备案号链接保持原色 */
.f-bottom a{color:inherit;text-decoration:none;border-bottom:1px dotted rgba(255,255,255,.35)}
.f-bottom a:hover{color:var(--gold-l);border-bottom-color:var(--gold-l)}

/* 落地页正文（列表 + 段落）排版修正 */
.about-body p{line-height:1.95;margin-bottom:15px}
.about-body p:last-child{margin-bottom:0}
.check-list{margin:20px 0 18px}
.check-list li:last-child{margin-bottom:0}

/* 落地页 图文分栏（正文 + 配图），.rev 时图在左 */
.prose-split{display:grid;grid-template-columns:1.3fr 1fr;gap:54px;align-items:center;max-width:1080px;margin:0 auto}
.prose-split.rev .ps-media{order:-1}
.ps-text{min-width:0}
.ps-media{margin:0;border-radius:16px;overflow:hidden;background:#F1F5FA;border:1px solid #E8EEF6;box-shadow:0 14px 36px rgba(20,40,70,.08)}
.ps-media img{display:block;width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .7s cubic-bezier(.22,.8,.3,1)}
.ps-media:hover img{transform:scale(1.03)}
@media (max-width:860px){
  .prose-split{grid-template-columns:1fr;gap:24px}
  .ps-media,.prose-split.rev .ps-media{order:-1}
  .ps-media img{aspect-ratio:16/10}
}

/* ---------- 滚动渐入动效（进入视口时上浮淡入，卡片组依次错峰） ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .65s ease-out var(--rvd,0s),transform .65s cubic-bezier(.22,.8,.3,1) var(--rvd,0s);will-change:opacity,transform}
.rv.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  .rv,.rv.in{opacity:1;transform:none;transition:none}
}
/* 渐入结束后保留卡片 hover 上浮（避免被 .rv.in 的 transform 覆盖） */
.card.rv.in:hover{transform:translateY(-2px)}

/* ---------- 留言表单：个人信息处理告知 ---------- */
.privacy-box{grid-column:1 / -1;background:#F6F8FB;border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:4px;padding:16px 18px 14px;margin-top:2px}
.privacy-box .pb-title{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.4px;margin-bottom:8px}
.privacy-box .pb-list{margin:0 0 12px;padding:0;list-style:none}
.privacy-box .pb-list li{position:relative;padding-left:13px;font-size:12.5px;line-height:1.85;color:var(--muted);margin-bottom:3px}
.privacy-box .pb-list li::before{content:"";position:absolute;left:1px;top:8px;width:5px;height:5px;border-radius:50%;background:#5B8FB9}
.privacy-box .pb-list b{color:var(--ink-2);font-weight:600}
.privacy-box .pb-check{display:flex;align-items:flex-start;gap:8px;padding-top:11px;border-top:1px dashed #DDE5EF;cursor:pointer}
.privacy-box .pb-check input{flex:none;width:15px;height:15px;margin:3px 0 0;accent-color:var(--blue);cursor:pointer}
.privacy-box .pb-check span{font-size:12.5px;line-height:1.75;color:var(--ink-2)}
@media (max-width:720px){
  .privacy-box{padding:14px 14px 12px}
  .privacy-box .pb-list li,.privacy-box .pb-check span{font-size:12px}
}

/* 数据条：单位改为上标小字（对齐参考站「15年 / 1395+」的写法） */
.stats-bar b .num,.stats-bar b .unit{font-size:inherit;color:inherit;font-weight:inherit}
.stats-bar b .unit{font-size:.56em;font-weight:600;margin-left:1px;position:relative;top:-.18em;letter-spacing:0}