:root{
  --primary:#1f6feb;
  --primary-d:#155ec0;
  --deep:#0a2a5e;
  --deep-2:#0d3677;
  --ink:#141821;
  --muted:#66707e;
  --line:#e6eaf1;
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --radius:16px;
  --shadow:0 10px 30px rgba(15,40,90,.10);
  --shadow-lg:0 18px 44px rgba(15,40,90,.16);
  --maxw:1200px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",
    "Noto Sans Tibetan",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16.5px;
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  overflow-x:clip;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}

/* ---- 品牌标识（放大 + 分隔线）---- */
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-logo{height:54px;width:auto;flex:0 0 auto;transition:transform .22s ease}
.brand:hover .brand-logo{transform:scale(1.05)}
.brand-text{display:flex;flex-direction:column;line-height:1.12;
  padding-left:14px;border-left:1px solid #dfe6f1}
.brand-text b{
  font-size:26px;font-weight:900;letter-spacing:3px;
  background:linear-gradient(90deg,#08234c 0%,#1f6feb 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  white-space:nowrap;
}
.brand-text i{font-style:normal;font-size:10.5px;letter-spacing:3.4px;
  color:#8a99b0;font-weight:700;margin-top:4px}

/* ---- 导航 ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:26px;height:84px}
/* 导航菜单：胶囊按钮 */
.menu{display:flex;gap:8px;margin-left:14px;flex:1;align-items:center}
.menu a{
  padding:11px 22px;border-radius:999px;font-size:16.5px;font-weight:700;
  letter-spacing:.6px;color:#414b5a;white-space:nowrap;
  border:1px solid transparent;transition:background .18s,color .18s,border-color .18s,box-shadow .18s;
}
.menu a:hover{background:#eef4ff;color:var(--primary);border-color:#d7e6ff}
.menu a.on{
  background:linear-gradient(135deg,#3d8bff,#1f6feb);color:#fff;
  border-color:transparent;box-shadow:0 8px 20px rgba(31,111,235,.30);
}
.menu a.on:hover{color:#fff}
.lang-switch{display:flex;gap:4px;background:var(--bg-soft);padding:4px;border-radius:999px}
.lang-switch a{padding:6px 13px;border-radius:999px;font-size:13px;font-weight:700;color:var(--muted);
  white-space:nowrap}
.lang-switch a.on{background:#fff;color:var(--primary);box-shadow:var(--shadow)}

/* ---- 移动端导航：汉堡按钮 + 下拉抽屉（≤900px）---- */
.nav-toggle{
  display:none;margin-left:auto;flex:0 0 auto;width:46px;height:46px;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:#fff;border-radius:12px;cursor:pointer;
  box-shadow:0 4px 12px rgba(15,40,90,.07);
  -webkit-appearance:none;appearance:none;touch-action:manipulation;
  transition:background .18s,border-color .18s,box-shadow .18s;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:#2b3646;
  transition:transform .24s ease,opacity .18s ease}
.nav-toggle:hover{border-color:#c9dcff;background:#f7fbff}
.nav-toggle.open{background:var(--primary);border-color:var(--primary);
  box-shadow:0 8px 20px rgba(31,111,235,.32)}
.nav-toggle.open span{background:#fff}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.m-menu{display:none;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 22px 44px rgba(10,42,94,.14)}
@keyframes mmDrop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.m-nav{display:flex;flex-direction:column;padding:4px 0 2px}
.m-nav a{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 2px;font-size:17.5px;font-weight:700;color:#31405a;
  border-bottom:1px solid var(--line);touch-action:manipulation}
.m-nav a::after{content:"›";color:#c2cddd;font-size:22px;font-weight:400;line-height:1}
.m-nav a.on{color:var(--primary)}
.m-nav a.on::after{color:var(--primary)}
.m-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;
  flex-wrap:wrap;padding:16px 0 20px}
.m-lang{display:flex;gap:6px;background:var(--bg-soft);padding:4px;border-radius:999px}
.m-lang a{padding:8px 15px;border-radius:999px;font-size:13.5px;font-weight:700;color:var(--muted)}
.m-lang a.on{background:#fff;color:var(--primary);box-shadow:var(--shadow)}
.m-call{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:999px;
  background:linear-gradient(135deg,#3d8bff,#1f6feb);color:#fff;font-weight:800;font-size:15px;
  letter-spacing:.5px;box-shadow:0 10px 22px rgba(31,111,235,.32)}

/* ---- Hero（深蓝大气）---- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(128deg,#071f47 0%,var(--deep) 38%,var(--deep-2) 68%,#155ec0 115%);
  padding:118px 0 0;
}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(64,140,255,.38),transparent 65%),
    radial-gradient(700px 380px at -8% 108%,rgba(38,108,220,.30),transparent 60%);}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(4,16,40,.35))}
.hero .container{position:relative;z-index:1}
.hero-kicker{margin:0 0 18px;font-size:13.5px;font-weight:800;letter-spacing:5px;
  color:#9dc3ff;text-transform:uppercase}
.hero h1{font-size:clamp(34px,5.2vw,60px);line-height:1.18;margin:0 0 20px;font-weight:900;letter-spacing:1px}
.hero p{font-size:19px;color:#c6d8f5;max-width:680px;margin:0 0 36px;font-weight:400}
.cta-row{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:15px 34px;border-radius:999px;font-weight:800;font-size:16px;letter-spacing:.5px;transition:.18s}
.btn-primary{background:linear-gradient(135deg,#3d8bff,#1f6feb);color:#fff;
  box-shadow:0 12px 28px rgba(31,111,235,.42)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(31,111,235,.52)}
.hero .btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.35)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.6)}
.hero-stats{
  margin-top:76px;display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.18);
}
.hero-stats .stat{padding:26px 8px 30px;text-align:center;position:relative}
.hero-stats .stat + .stat::before{content:"";position:absolute;left:0;top:28%;bottom:28%;
  width:1px;background:rgba(255,255,255,.16)}
.hero-stats b{display:block;font-size:clamp(24px,2.6vw,32px);font-weight:900;letter-spacing:1px;
  background:linear-gradient(180deg,#ffffff,#b9d4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats span{font-size:14px;color:#a9c2ea;letter-spacing:1.5px}

/* ---- 区块通用 ---- */
.section{padding:92px 0}
.section.soft{background:var(--bg-soft)}
.section h2{font-size:clamp(26px,3.2vw,38px);margin:0 0 10px;font-weight:900;letter-spacing:1px}
.page-h1{font-size:clamp(28px,3.4vw,40px);margin:0 0 10px;font-weight:900;letter-spacing:1px}
.section .sub{color:var(--muted);margin:0 0 48px;font-size:17px}
.center{text-align:center}

/* ---- 首页 SEO 导语（关键词承接区）---- */
.seo-intro{padding:64px 0}
.seo-intro .si-h2{font-size:clamp(22px,2.4vw,30px);margin:0 0 22px;font-weight:900;letter-spacing:.6px}
.si-cols{display:grid;grid-template-columns:1.35fr 1fr;gap:36px;align-items:start}
.si-lead{margin:0;color:#3a4453;font-size:16.5px;line-height:1.95}
.si-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.si-list li{position:relative;padding:12px 16px 12px 42px;background:#fff;border:1px solid var(--line);
  border-radius:12px;font-size:15.5px;color:#37414f;box-shadow:0 4px 14px rgba(15,40,90,.05)}
.si-list li::before{content:"✓";position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:19px;height:19px;display:flex;align-items:center;justify-content:center;border-radius:50%;
  background:linear-gradient(135deg,#3d8bff,#1f6feb);color:#fff;font-size:11px;font-weight:900}
@media (max-width:900px){
  .seo-intro{padding:52px 0}
  .si-cols{grid-template-columns:1fr;gap:22px}
  .si-list li{font-size:15px;padding:11px 14px 11px 40px}
}

/* ---- 卡片网格 ---- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-5px);border-color:#c9dcff;box-shadow:var(--shadow-lg)}
.card .icon{font-size:34px;margin-bottom:14px}
.card h3{margin:0 0 10px;font-size:19px;font-weight:800}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.prod-card .thumb{height:190px;background:linear-gradient(150deg,#e8f1ff,#f6faff);
  border-radius:12px;margin-bottom:20px;display:flex;align-items:center;justify-content:center;font-size:34px;overflow:hidden}
.prod-card .thumb img{width:100%;height:100%;object-fit:contain;border-radius:12px}
.prod-card h3{font-size:17.5px}

/* ---- 应用场景卡片（配图）---- */
.scene-grid{gap:26px}
.scene-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.scene-img{height:250px;flex:0 0 auto;overflow:hidden;background:linear-gradient(150deg,#e8f1ff,#f6faff)}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.scene-card:hover .scene-img img{transform:scale(1.06)}
.scene-body{padding:24px 28px 28px}
.scene-body h3{font-size:20px;letter-spacing:.5px}
.scene-body p{font-size:15.5px}

.news-thumb{height:190px;background:linear-gradient(150deg,#e8f1ff,#f6faff);
  border-radius:12px;margin-bottom:16px;display:flex;align-items:center;justify-content:center;
  font-size:30px;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:12px}

/* ---- 首页动态区块 ---- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:40px}
.sec-head h2{margin-bottom:6px}
.sec-head .sub{margin:0}
.sec-more{flex:0 0 auto}
.home-news .date{display:block;color:#9aa6b6;font-size:13.5px;letter-spacing:1px;margin-bottom:2px}
.home-news h3{font-size:17.5px;line-height:1.5;margin:8px 0 10px;font-weight:800;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.home-news .exc{color:var(--muted);font-size:14.5px;line-height:1.75;margin:0 0 14px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.home-news .more{color:var(--primary);font-weight:700;font-size:14px;letter-spacing:.3px;
  transition:letter-spacing .2s ease}
.home-news:hover .more{letter-spacing:1px}

/* ---- 关于我们 ---- */
.about-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:center}
.about-text h1{font-size:clamp(28px,3.4vw,40px);margin:0 0 18px;font-weight:900;letter-spacing:1px}
.about-photo{margin:0}
.about-photo img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow-lg);
  border:1px solid var(--line)}
.about-photo figcaption{margin-top:12px;font-size:13.5px;color:var(--muted);
  text-align:center;letter-spacing:1px}
.about-p{font-size:17px;line-height:2;color:#2b3240;margin:0 0 18px}
.about-p:last-child{margin-bottom:0}
.about-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:64px;padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.about-facts .fact{text-align:center}
.about-facts b{display:block;font-size:clamp(22px,2.4vw,30px);font-weight:900;letter-spacing:.5px;
  background:linear-gradient(135deg,#08234c,#1f6feb);-webkit-background-clip:text;background-clip:text;color:transparent}
.about-facts span{font-size:13.5px;color:var(--muted);letter-spacing:.5px}
.about-do{margin-top:72px}
@media (max-width:980px){
  .about-grid{grid-template-columns:1fr;gap:30px}
  .about-facts{grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
}

/* ---- 型号标识（详情页页头 + 产品卡）---- */
.pd-model{display:inline-flex;align-items:center;gap:10px;margin:12px 0 6px;
  padding:7px 15px;border-radius:10px;background:#eef4ff;border:1px solid #d7e6ff}
.pd-model span{font-size:12.5px;font-weight:700;letter-spacing:1.2px;color:#5b7ba8}
.pd-model b{font-size:16px;font-weight:800;color:var(--primary);letter-spacing:.6px}
.rel-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.tag-model{background:#eef4ff;color:var(--primary);font-weight:700}

/* ================= 详情页（产品 / 新闻）统一版式 ================= */
.det-page{padding-top:34px}
.crumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);margin:0 0 28px;line-height:1.5}
.crumb a{color:var(--muted);transition:color .18s}
.crumb a:hover{color:var(--primary)}
.crumb span{color:#c7d0de}
.crumb em{font-style:normal;color:var(--ink);font-weight:600;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(46ch,58%)}
.det-h2{font-size:22px;font-weight:900;letter-spacing:.5px;margin:0 0 20px;
  padding-left:15px;position:relative;line-height:1.4}
.det-h2::before{content:"";position:absolute;left:0;top:50%;
  transform:translateY(-50%);width:4px;height:19px;border-radius:2px;
  background:linear-gradient(180deg,#3d8bff,#1f6feb)}

/* ---- 产品详情：页头两栏 ---- */
.pd-hero{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:52px;align-items:center}
.pd-media{margin:0;background:linear-gradient(150deg,#e8f1ff,#f9fcff);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  aspect-ratio:4/3;display:flex;align-items:center;justify-content:center}
.pd-media img{width:100%;height:100%;object-fit:contain;padding:20px}
.pd-media-ph{font-size:76px;opacity:.45}
.pd-intro{min-width:0}
.pd-intro .tag{background:#eef4ff;color:var(--primary);font-weight:800;letter-spacing:.5px}
.pd-intro h1{font-size:clamp(24px,2.9vw,34px);line-height:1.3;font-weight:900;
  letter-spacing:.5px;margin:14px 0}
.pd-lead{font-size:17.5px;line-height:1.8;color:#4a5464;margin:0 0 26px}
.pd-metrics{list-style:none;display:grid;gap:12px;padding:0;margin:0 0 30px;
  grid-template-columns:repeat(auto-fit,minmax(148px,1fr))}
.pd-metrics li{background:var(--bg-soft);border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;min-width:0}
.pd-metrics b{display:block;font-size:19px;font-weight:900;color:var(--deep-2);
  letter-spacing:.2px;margin-bottom:5px;word-break:break-word}
.pd-metrics span{font-size:13px;color:var(--muted);letter-spacing:.5px}
.pd-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-line{display:inline-block;background:#fff;color:var(--primary);
  border:1px solid #cddffb;border-radius:999px;font-weight:800;font-size:16px;
  padding:15px 30px;transition:.18s}
.btn-line:hover{background:#f2f7ff;border-color:#9ec2fb;transform:translateY(-2px)}

/* ---- 产品 / 新闻：主栏 + 侧栏 ---- */
.det-cols{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:52px;
  margin-top:78px;padding-top:64px;border-top:1px solid var(--line);align-items:start}
.det-main{min-width:0}
.det-sec + .det-sec{margin-top:52px}
.pd-text{margin:0;font-size:17px;line-height:1.95;color:#20242c}
.spec-grid{display:grid;gap:12px;margin:0;padding:0;
  grid-template-columns:repeat(2,minmax(0,1fr))}
.spec-i{background:#fbfdff;border:1px solid var(--line);border-radius:12px;
  padding:15px 18px;min-width:0}
.spec-i dt{font-size:13px;color:var(--muted);letter-spacing:.6px;margin-bottom:7px}
.spec-i dd{margin:0;font-size:16.5px;font-weight:700;color:#1b2130;line-height:1.55;
  word-break:break-word}
.spec-i-wide{grid-column:1 / -1;background:#f4f8ff;border-color:#dbe8ff;padding:14px 18px}
.spec-i-wide dd{font-weight:600;font-size:15.5px;color:#3a4a63}
.det-side{min-width:0}
.det-related{margin-top:78px;padding-top:64px;border-top:1px solid var(--line)}

/* ---- 侧栏卡片 ---- */
.side-card,.nd-card{background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow)}
.nd-side{display:flex;flex-direction:column;gap:22px}
.side-card h3,.nd-card h3{margin:0 0 8px;font-size:18px;font-weight:900;letter-spacing:.4px}
.side-card .hint,.nd-card .hint{margin:0 0 16px;font-size:13.5px;color:var(--muted);line-height:1.7}
.side-facts{list-style:none;padding:0;margin:0 0 22px}
.side-facts li{display:flex;justify-content:space-between;align-items:baseline;
  gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px}
.side-facts li:last-child{border-bottom:0;padding-bottom:4px}
.side-facts span{color:var(--muted);font-size:13.5px;flex:0 0 auto}
.side-facts b{font-weight:800;color:#1b2130;text-align:right;word-break:break-all}
.side-card .btn,.nd-card .btn{display:block;text-align:center}

/* ---- 相关产品卡片 ---- */
.rel-card{display:flex;flex-direction:column;height:100%}
.rel-card .thumb{margin-bottom:16px}
.rel-card .rel-name{margin:10px 0 8px;font-size:17px;font-weight:800;line-height:1.45}
.rel-card .rel-sum{margin:0;color:var(--muted);font-size:14.5px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---- 新闻详情：阅读栏 ---- */
.nd{min-width:0}
.nd-head{border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:32px}
.nd-title{font-size:clamp(25px,3.1vw,37px);line-height:1.3;font-weight:900;
  letter-spacing:.5px;margin:0 0 16px}
.nd-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);letter-spacing:.4px}
.nd-meta i{display:inline-block;width:1px;height:12px;background:#dde3ec}
/* 封面与正文配图：统一尺寸、统一样式（宽度一致，视觉整齐） */
.nd-cover,.nd-inline{margin:0 auto 28px;max-width:760px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-soft);line-height:0;
  box-shadow:0 10px 26px rgba(15,40,90,.09)}
.nd-cover img,.nd-inline img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
/* 白底产品图：完整显示不裁切（外框尺寸与封面一致） */
.nd-inline.is-contain img{object-fit:contain;background:linear-gradient(150deg,#f4f8ff,#fbfdff);
  padding:10px;box-sizing:border-box}
.nd-cover{margin-top:2px}
.nd-inline{margin-top:6px}
.nd-body{font-size:17.5px;line-height:2;color:#20242c}
.nd-body p{margin:0 0 22px}
.nd-body p:last-child{margin-bottom:0}
.nd-body .nd-li{position:relative;padding-left:22px;margin-bottom:12px;color:#2b3240}
.nd-body .nd-li::before{content:"";position:absolute;left:6px;top:.82em;
  width:6px;height:6px;border-radius:50%;background:#9ec2fb}
.nd-body .nd-li:last-child{margin-bottom:0}
.nd-h2{font-size:20px;font-weight:900;letter-spacing:.5px;color:var(--deep);
  margin:38px 0 14px;padding-left:15px;position:relative;line-height:1.5}
.nd-h2::before{content:"";position:absolute;left:0;top:.42em;bottom:.34em;
  width:4px;border-radius:2px;background:linear-gradient(180deg,#3d8bff,#1f6feb)}
.nd-h2:first-child{margin-top:0}
.nd-foot{margin-top:46px;padding-top:30px;border-top:1px solid var(--line)}
.nd-list{list-style:none;padding:0;margin:0}
.nd-list li + li{border-top:1px dashed var(--line)}
.nd-list a{display:block;padding:13px 0}
.nd-list time{display:block;font-size:12.5px;color:#9aa6b6;letter-spacing:.6px;margin-bottom:6px}
.nd-list span{font-size:15px;font-weight:600;line-height:1.6;color:#1b2130;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nd-list a:hover span{color:var(--primary)}

/* ---- 详情页响应式 ---- */
@media (max-width:1080px){
  .pd-hero{gap:38px}
  .det-cols{grid-template-columns:minmax(0,1fr) 288px;gap:38px}
}
@media (max-width:980px){
  .pd-hero{grid-template-columns:1fr;gap:32px}
  .pd-media{aspect-ratio:16/10}
  .det-cols{grid-template-columns:1fr;gap:36px;margin-top:56px;padding-top:48px}
  .det-related{margin-top:56px;padding-top:48px}
  .det-sec + .det-sec{margin-top:42px}
}
@media (max-width:640px){
  .det-page{padding-top:24px}
  .crumb{margin-bottom:20px;font-size:13.5px}
  .crumb em{max-width:100%}
  .spec-grid{grid-template-columns:1fr}
  .pd-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pd-actions .btn,.pd-actions .btn-line{flex:1 1 100%;text-align:center}
  .det-cols,.det-related{margin-top:44px;padding-top:38px}
  .nd-body{font-size:16.5px;line-height:1.95}
  .nd-body p{margin-bottom:19px}
  .nd-h2{font-size:18.5px;margin-top:30px}
  .nd-cover{margin-bottom:26px}
  .nd-title{letter-spacing:0}
  .side-card,.nd-card{padding:22px 20px}
  .spec-i dd{font-size:16px}
}
.news-card .date{color:#9aa6b6;font-size:13.5px;letter-spacing:1px}

/* ---- 联系 ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-info p{margin:10px 0;font-size:17.5px}
.contact-info b{color:var(--primary)}

/* 商务合作面板 */
.biz-lead{color:#4c5766;font-size:15.5px;line-height:1.85;margin:0 0 20px}
.biz-list{list-style:none;padding:0;margin:0 0 20px;display:grid;gap:14px}
.biz-list li{display:flex;gap:12px;align-items:flex-start}
.biz-list .bi{flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:#eef4ff;
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;font-style:normal}
.biz-list b{display:block;font-size:15.5px;font-weight:800;color:var(--ink);margin-bottom:2px}
.biz-list span{display:block;font-size:14px;color:var(--muted);line-height:1.6}
.biz-tags{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px}
.biz-tags span{background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;
  padding:6px 13px;font-size:13px;font-weight:600;color:#4a5566;letter-spacing:.3px}
.biz-btn{display:block;text-align:center}

/* ---- 首页底部联系区（含地图）---- */
.contact-cta{display:grid;grid-template-columns:1fr 1.12fr;gap:14px 56px;align-items:center}
.cta-text{grid-column:1;grid-row:1 / span 2;min-width:0}
.cta-text h2{margin-bottom:8px}
.cta-facts{list-style:none;padding:0;margin:0 0 30px}
.cta-facts li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;
  color:#4a5464;font-size:16.5px;line-height:1.6}
.cta-facts li b{font-size:17px;line-height:1.5}
.btn-ghost-dark{background:#fff;color:var(--primary);border:1px solid #cddffb}
.btn-ghost-dark:hover{background:#f2f7ff;border-color:#9ec2fb;transform:translateY(-2px)}

.cta-map{display:block;position:relative;grid-column:2;grid-row:1;
  border-radius:var(--radius);overflow:hidden;background:#eef2f8;
  border:1px solid var(--line);box-shadow:var(--shadow-lg);
  line-height:0;transition:transform .22s ease,box-shadow .22s ease}
.cta-map img{width:100%;height:auto;display:block;transition:transform .55s ease}
.cta-map:hover{transform:translateY(-3px);box-shadow:0 22px 50px rgba(15,40,90,.20)}
.cta-map:hover img{transform:scale(1.03)}
.map-cap{grid-column:2;grid-row:2;margin:0;font-size:13px;color:#93a0b3;letter-spacing:.3px}

/* ---- 页脚 ---- */
.footer{background:var(--deep);color:#b9c8e2;margin-top:72px;padding:44px 0 36px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-logo{height:52px;width:auto;flex:0 0 auto}
.footer-brand b{color:#fff;font-size:22px;letter-spacing:3px;display:block}
.footer-brand p{margin:4px 0 0;font-size:14px;color:#93a9d4;letter-spacing:1px}
.footer-copy{font-size:13.5px;color:#8fa6cd;margin:0}
.footer-beian{font-size:12.5px;color:#8fa6cd;margin:8px 0 0}
.footer-beian a{color:#8fa6cd;text-decoration:none}
.footer-beian a:hover{color:#c6d5f0;text-decoration:underline}

/* ---- 后台（保持原样）---- */
.admin-wrap{max-width:1000px;margin:30px auto;padding:0 20px}
.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.admin-nav{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.admin-nav a{padding:8px 16px;background:var(--bg-soft);border-radius:8px;font-weight:600;color:var(--muted)}
.admin-nav a.on{background:var(--primary);color:#fff}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:700;margin-bottom:6px;font-size:14px}
.field input,.field textarea,.field select{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;font-size:15px;font-family:inherit}
.field textarea{min-height:90px;resize:vertical}
.tri{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}
.tri .lbl{font-size:12px;color:var(--muted)}
.flash{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-weight:600}
.flash.success{background:#e7f7ec;color:#1a7f3c}
.flash.danger{background:#fdeaea;color:#c0392b}
table.list{width:100%;border-collapse:collapse}
table.list th,table.list td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:15px}
table.list th{color:var(--muted);font-weight:700}
.tag{display:inline-block;background:var(--bg-soft);padding:2px 10px;border-radius:999px;font-size:13px;color:var(--muted)}
.btn-sm{padding:6px 12px;border-radius:8px;font-size:13px;font-weight:700;border:1px solid var(--line);background:#fff;cursor:pointer}
.btn-sm.danger{color:#c0392b;border-color:#f0c9c9}
.btn-sm.primary{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---- 服务与方案（着陆页）---- */
.sol-grid{gap:22px}
.sol-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:30px 28px}
.sol-idx{position:absolute;right:26px;top:22px;font-size:14px;font-weight:900;
  letter-spacing:1px;color:#c9dcff}
.sol-h2{font-size:20px;font-weight:900;letter-spacing:.4px;margin:0;color:var(--deep);
  line-height:1.45;padding-right:44px}
.sol-lead{margin:0;color:var(--muted);font-size:15.5px;line-height:1.85;flex:1}
.sol-card .more{color:var(--primary);font-weight:700;font-size:14px;letter-spacing:.3px;
  transition:letter-spacing .2s}
.sol-card:hover .more{letter-spacing:1px}
.sol-lead-lg{margin:18px 0 0;font-size:17.5px;line-height:1.95;color:#3a4453;
  padding:18px 22px;background:var(--bg-soft);border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0}

/* ---- 常见问题 ---- */
.sol-faq{margin-top:44px;padding-top:34px;border-top:1px solid var(--line)}
.faq-list{margin:0;padding:0}
.faq-i{padding:18px 0;border-bottom:1px dashed var(--line)}
.faq-i:last-child{border-bottom:0;padding-bottom:0}
.faq-i dt{font-size:16.5px;font-weight:800;color:var(--deep);line-height:1.65;
  margin-bottom:8px;position:relative;padding-left:26px}
.faq-i dt::before{content:"Q";position:absolute;left:0;top:2px;width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;border-radius:5px;
  background:var(--primary);color:#fff;font-size:11px;font-weight:900;line-height:1}
.faq-i dd{margin:0 0 0 26px;font-size:16px;line-height:1.95;color:#3a4453}

/* ---- 页脚链接区 ---- */
.footer-main{display:flex;justify-content:space-between;align-items:flex-start;
  gap:32px;flex-wrap:wrap;padding-bottom:26px;margin-bottom:20px;
  border-bottom:1px solid rgba(255,255,255,.12)}
.footer-links{display:flex;gap:56px;flex-wrap:wrap}
.fl-col h4{margin:0 0 14px;font-size:14px;font-weight:800;color:#fff;letter-spacing:1.2px}
.fl-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.fl-col a{font-size:14px;color:#a8bcdd;transition:color .18s}
.fl-col a:hover{color:#fff}
/* 页脚联系方式 */
.fl-contact a{display:inline-flex;align-items:center;gap:6px;flex-wrap:wrap}
.fl-plain{font-size:14px;color:#a8bcdd}
/* 点击复制提示 */
.wx-copy{cursor:pointer}
.wx-tip{margin-left:7px;font-size:11.5px;font-weight:600;color:#8ba3cc;
  border:1px solid rgba(139,163,204,.4);border-radius:20px;padding:1px 7px;transition:all .18s}
.wx-tip.on{color:#6ee7a5;border-color:rgba(110,231,165,.55)}
/* 详情页侧栏联系项可点 */
.side-facts .sf-link{color:var(--primary);font-weight:700;
  border-bottom:1px dashed rgba(37,99,235,.4);cursor:pointer}
.side-facts .sf-link:hover{border-bottom-style:solid}
.side-more{display:flex;flex-direction:column;gap:9px;margin-top:16px;
  padding-top:14px;border-top:1px solid var(--line)}
.side-more a{font-size:14px;font-weight:700;color:var(--primary)}
.side-more a:hover{text-decoration:underline}
/* 联系页信息可点 */
.ci-link{color:var(--primary);font-weight:700;
  border-bottom:1px dashed rgba(37,99,235,.4);cursor:pointer}
.ci-link:hover{border-bottom-style:solid}
.ci-go{display:inline-block;margin-left:4px;transition:transform .18s}
.ci-link:hover .ci-go{transform:translateX(3px)}
.ci-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
/* 可点击卡片 */
.card-link{display:block;position:relative;transition:transform .18s,box-shadow .18s}
.card-link:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(15,40,90,.13)}
.card-go{display:inline-block;margin-top:15px;color:var(--primary);font-weight:700;font-size:14px}
.card-link:hover .card-go{letter-spacing:.6px}
.about-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:38px}

/* ---- 响应式 ---- */
@media (max-width:1120px){
  .menu{gap:4px;margin-left:6px}
  .menu a{padding:10px 14px;font-size:15px;letter-spacing:.3px}
  .brand-text b{font-size:23px}
  .nav-inner{gap:16px}
}
@media (max-width:980px){
  .nav-inner{gap:10px}
  .brand{gap:10px}
  .brand-logo{height:44px}
  .brand-text{padding-left:10px}
  .brand-text b{font-size:21px;letter-spacing:1.5px}
  .brand-text i{display:none}
  .menu{gap:2px;margin-left:4px}
  .menu a{padding:9px 12px;font-size:14.5px;letter-spacing:0}
  .lang-switch{padding:3px}
  .lang-switch a{padding:6px 10px;font-size:12.5px}
}
@media (max-width:900px){
  /* 导航切换为汉堡 + 抽屉 */
  .menu{display:none}
  .lang-switch{display:none}
  .nav-toggle{display:flex}
  .m-menu.open{display:block;animation:mmDrop .22s ease both}
  .nav-inner{gap:12px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats .stat:nth-child(3)::before{display:none}
  .contact-cta{grid-template-columns:1fr;gap:22px}
  .cta-text,.cta-map,.map-cap{grid-column:auto;grid-row:auto}
  .cta-facts{margin-bottom:22px}
  /* 服务与方案：窄屏单列 */
  .sol-grid{grid-template-columns:1fr;gap:16px}
  .sol-card{padding:24px 22px}
  .sol-h2{font-size:18px}
  .sol-lead-lg{font-size:16px;padding:14px 16px;line-height:1.9}
  .faq-i dt{font-size:15.5px}
  .faq-i dd{font-size:15px;margin-left:0}
  .footer-links{gap:36px}
  .footer-main{gap:22px}
  .fl-col h4{margin-bottom:10px}
  .fl-col a{font-size:13.5px}
}
@media (max-width:600px){
  .container{padding:0 18px}
  .biz-lead{font-size:15px;line-height:1.8}
  .biz-list{gap:12px}
  .biz-list .bi{width:32px;height:32px;font-size:16px}
  .sec-head{margin-bottom:26px;align-items:flex-start;gap:16px}
  .sec-more{width:100%;text-align:center}
  .home-news .exc{-webkit-line-clamp:4}
  .about-p{font-size:16px;line-height:1.9}
  .about-facts{padding:24px 0;gap:20px}
  .about-do{margin-top:52px}
  .grid{gap:18px}
  .card{padding:24px 20px}
  .nav-inner{height:64px;gap:10px}
  .nav-toggle{width:42px;height:42px}
  .brand{gap:9px}
  .brand-logo{height:40px}
  .brand-text{padding-left:9px}
  .brand-text b{font-size:19px;letter-spacing:1px}
  .m-nav a{font-size:17px;padding:15px 2px}
  .m-foot{gap:10px;padding:14px 0 18px}
  .m-call{padding:10px 17px;font-size:14.5px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .tri{grid-template-columns:1fr}
  .hero{padding:54px 0 0}
  .hero h1{letter-spacing:0;font-size:clamp(28px,8vw,36px)}
  .hero-kicker{font-size:12px;letter-spacing:3px;margin-bottom:14px}
  .hero p{font-size:16.5px;margin-bottom:26px}
  .cta-row{gap:12px}
  .cta-row .btn{flex:1 1 100%;text-align:center;padding:15px 22px}
  .hero-stats{margin-top:40px}
  .hero-stats .stat{padding:20px 6px 22px}
  .hero-stats b{font-size:25px;letter-spacing:0}
  .hero-stats span{font-size:12.5px;letter-spacing:.5px}
  .section{padding:56px 0}
  .section .sub{margin-bottom:30px;font-size:15.5px}
  .scene-img{height:180px}
  .scene-grid{gap:18px}
  .scene-body{padding:18px 20px 22px}
  .cta-facts li{font-size:15.5px}
  .footer{margin-top:56px;padding:32px 0 26px}
  .footer-inner{flex-direction:column;text-align:center;gap:12px}
  .footer-brand{flex-direction:column;text-align:center;gap:10px}
  .footer-logo{height:46px}
  .footer-copy{font-size:12.5px}
  .footer-beian{font-size:12px}
  .about-photo figcaption{font-size:12.5px}
  .field input,.field textarea,.field select{font-size:16px}
}
@media (max-width:380px){
  .brand-text b{font-size:17.5px;letter-spacing:0}
  .brand-logo{height:36px}
  .nav-inner{gap:8px}
  .hero-stats b{font-size:22px}
}