/* =========================================================
   武汉唯案科技有限公司 · 官网样式
   TDSC Website — Corporate Blue / Tech
   ========================================================= */

:root{
  --navy-900:#04122B;
  --navy-800:#061A3A;
  --navy-700:#072A5E;
  --blue-700:#0A3A86;
  --blue-600:#0B4DA2;
  --blue-500:#1263D6;
  --blue-400:#2E86F0;
  --cyan-400:#35C9F2;
  --ink:#0E1F3A;
  --ink-2:#243B5C;
  --body:#4E617D;
  --muted:#7A8CA6;
  --line:#E3EAF5;
  --line-2:#EEF3FA;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FD;
  --bg-soft-2:#EDF3FC;
  --shadow-s:0 2px 10px rgba(9,32,72,.05);
  --shadow-m:0 12px 32px rgba(9,32,72,.08);
  --shadow-l:0 24px 60px rgba(9,32,72,.14);
  --radius:8px;
  --radius-l:14px;
  --container:1240px;
  --header-h:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:600;line-height:1.35;letter-spacing:.2px}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
::selection{background:rgba(18,99,214,.16)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:96px 0;position:relative}
.section--soft{background:var(--bg-soft)}
.section--tight{padding:72px 0}
.section--dark{background:var(--navy-800);color:rgba(255,255,255,.74)}
.section--dark h2,.section--dark h3{color:#fff}

/* ---------- 通用标题 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:2.4px;text-transform:uppercase;
  color:var(--blue-500);font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--blue-500),var(--cyan-400))}
.section--dark .eyebrow{color:var(--cyan-400)}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-head h2{font-size:38px;letter-spacing:.5px;line-height:1.28}
.sec-head .sec-sub{margin-top:16px;font-size:16px;color:var(--body)}
.section--dark .sec-head .sec-sub{color:rgba(255,255,255,.62)}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head--center .eyebrow::after{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--cyan-400),var(--blue-500))}
.sec-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;max-width:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:50px;padding:0 30px;border-radius:4px;
  font-size:15px;font-weight:500;letter-spacing:.6px;
  transition:all .3s var(--ease);white-space:nowrap;
}
.btn svg{width:17px;height:17px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--primary{background:linear-gradient(135deg,var(--blue-600),var(--blue-500));color:#fff;box-shadow:0 10px 24px rgba(18,99,214,.28)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(18,99,214,.36);color:#fff}
.btn--ghost{border:1px solid rgba(255,255,255,.34);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6);color:#fff}
.btn--line{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn--line:hover{border-color:var(--blue-400);color:var(--blue-500);box-shadow:var(--shadow-s)}
.btn--sm{height:42px;padding:0 22px;font-size:14px}

/* =========================================================
   头部
   ========================================================= */
.site-header{position:fixed;inset:0 0 auto 0;z-index:900;transition:background .35s var(--ease),box-shadow .35s var(--ease)}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(4,16,38,.72),rgba(4,16,38,0));
  opacity:1;transition:opacity .35s;
}
.site-header.is-stuck{background:rgba(255,255,255,.97);backdrop-filter:blur(14px);box-shadow:0 1px 0 rgba(9,32,72,.07),0 10px 30px rgba(9,32,72,.06)}
.site-header.is-stuck::before{opacity:0}

.topbar{position:relative;border-bottom:1px solid rgba(255,255,255,.12);transition:all .35s var(--ease);overflow:hidden;max-height:40px}
.site-header.is-stuck .topbar{max-height:0;border-bottom-color:transparent;opacity:0}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:38px;font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.4px}
.topbar-tag{display:flex;align-items:center;gap:8px}
.topbar-tag::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 3px rgba(53,201,242,.18)}
.topbar-meta{display:flex;gap:26px}
.topbar-meta a:hover{color:#fff}
.site-header.is-stuck .topbar-inner{color:var(--muted)}

.nav-wrap{position:relative}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:13px}
.brand-mark{
  width:42px;height:42px;flex:none;display:block;background:currentColor;color:#fff;
  -webkit-mask:url(../img/logo.png) center/contain no-repeat;
  mask:url(../img/logo.png) center/contain no-repeat;
}
.site-header.is-stuck .brand .brand-mark{color:var(--blue-600)}
.footer-brand .brand-mark{color:#fff}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:21px;font-weight:600;letter-spacing:3px;color:#fff;transition:color .3s}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:1.3px;color:rgba(255,255,255,.52);margin-top:5px;transition:color .3s;text-transform:uppercase}
.site-header.is-stuck .brand-text strong{color:var(--ink)}
.site-header.is-stuck .brand-text em{color:var(--muted)}

.nav{display:flex;align-items:center;gap:4px}
.nav > a{
  position:relative;padding:0 18px;height:var(--header-h);display:flex;align-items:center;
  font-size:15px;color:rgba(255,255,255,.82);letter-spacing:.8px;transition:color .25s;
}
.nav > a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:19px;height:2px;
  background:linear-gradient(90deg,var(--blue-400),var(--cyan-400));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav > a:hover,.nav > a.is-active{color:#fff}
.nav > a:hover::after,.nav > a.is-active::after{transform:scaleX(1)}
.site-header.is-stuck .nav > a{color:var(--ink-2)}
.site-header.is-stuck .nav > a:hover,.site-header.is-stuck .nav > a.is-active{color:var(--blue-500)}

.nav-cta{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 22px;border-radius:4px;
  border:1px solid rgba(255,255,255,.32);font-size:14px;color:#fff;letter-spacing:1px;
  transition:all .3s var(--ease);
}
.nav-cta:hover{background:#fff;color:var(--blue-600);border-color:#fff}
.site-header.is-stuck .nav-cta{background:var(--blue-500);border-color:var(--blue-500);box-shadow:0 6px 18px rgba(18,99,214,.24)}
.site-header.is-stuck .nav-cta:hover{background:var(--blue-600);border-color:var(--blue-600);color:#fff}
.nav-cta svg{width:15px;height:15px}

.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:4px;color:#fff}
.site-header.is-stuck .nav-toggle{color:var(--ink)}
.nav-toggle span{position:relative;display:block;width:20px;height:1.5px;background:currentColor;transition:.3s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:20px;height:1.5px;background:currentColor;transition:.3s}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* =========================================================
   Hero（首页）
   ========================================================= */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;
  background:var(--navy-900);padding:150px 0 0;
}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 60%;transform:scale(1.02);animation:heroZoom 22s ease-out forwards}
@keyframes heroZoom{from{transform:scale(1.1)}to{transform:scale(1.02)}}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(96deg,rgba(4,16,38,.96) 0%,rgba(5,22,48,.9) 38%,rgba(5,24,54,.55) 66%,rgba(5,24,54,.35) 100%),
    linear-gradient(0deg,rgba(4,16,38,.82) 0%,rgba(4,16,38,.35) 26%,transparent 58%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(120,180,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(120,180,255,.09) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 42%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 42%,#000,transparent 78%);
}
.hero-inner{position:relative;z-index:2;width:100%;max-width:var(--container);margin:0 auto;padding:0 28px 0}
.hero-content{max-width:720px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;height:34px;padding:0 16px;border-radius:2px;
  border:1px solid rgba(53,201,242,.34);background:rgba(53,201,242,.08);
  font-size:12.5px;letter-spacing:2px;color:#8FDCF4;margin-bottom:30px;
}
.hero-badge i{width:5px;height:5px;border-radius:50%;background:var(--cyan-400);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(53,201,242,.5)}50%{opacity:.6;box-shadow:0 0 0 5px rgba(53,201,242,0)}}
.hero h1{
  font-size:60px;line-height:1.22;color:#fff;letter-spacing:1px;font-weight:600;
  text-shadow:0 4px 30px rgba(0,0,0,.3);
}
.hero h1 .grad{
  background:linear-gradient(100deg,#7FD8FF 0%,#4FA9FF 55%,#B9E6FF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:26px;font-size:17px;line-height:2;color:rgba(255,255,255,.72);max-width:610px;letter-spacing:.4px}
.hero-actions{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap}
.hero-stats{
  position:relative;z-index:2;margin-top:76px;border-top:1px solid rgba(255,255,255,.12);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hero-stats .stat{padding:30px 0 34px;position:relative}
.hero-stats .stat + .stat{padding-left:34px}
.hero-stats .stat + .stat::before{content:"";position:absolute;left:0;top:34px;bottom:34px;width:1px;background:rgba(255,255,255,.12)}
.hero-stats b{display:block;font-size:32px;color:#fff;font-weight:600;letter-spacing:.5px;line-height:1.1;font-variant-numeric:tabular-nums}
.hero-stats b span{font-size:15px;color:var(--cyan-400);margin-left:4px;letter-spacing:1px}
.hero-stats p{margin-top:9px;font-size:13px;color:rgba(255,255,255,.5);letter-spacing:1.2px}

/* 页面内页 Hero */
.page-hero{
  position:relative;padding:168px 0 84px;background:var(--navy-800);overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 82% 18%,rgba(18,99,214,.42),transparent 52%),
    radial-gradient(circle at 12% 96%,rgba(53,201,242,.18),transparent 48%),
    linear-gradient(120deg,#04122B,#072A5E 62%,#0A3A86);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(140,190,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(140,190,255,.08) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,#000,transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 88%);
}
.page-hero .container{position:relative;z-index:2}
.page-hero .eyebrow{color:var(--cyan-400)}
.page-hero h1{color:#fff;font-size:44px;letter-spacing:1px;margin-bottom:18px}
.page-hero p{max-width:700px;color:rgba(255,255,255,.66);font-size:16px;line-height:1.95}
.crumb{display:flex;gap:10px;align-items:center;font-size:12.5px;color:rgba(255,255,255,.42);letter-spacing:1px;margin-bottom:26px}
.crumb a:hover{color:#fff}
.crumb span{opacity:.4}

/* =========================================================
   集团条 / 数据条
   ========================================================= */
.group-bar{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:26px 0}
.group-bar-inner{display:flex;align-items:center;gap:44px;flex-wrap:wrap;justify-content:center}
.group-item{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--ink-2);letter-spacing:1.4px}
.group-item .dot{width:7px;height:7px;border-radius:1px;background:var(--blue-500);transform:rotate(45deg);opacity:.85}
.group-item em{font-style:normal;color:var(--muted);font-size:12px;letter-spacing:.6px}
.group-div{width:1px;height:26px;background:var(--line)}

/* =========================================================
   关于 · 图文块
   ========================================================= */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.about-text h2{font-size:36px;line-height:1.4;margin-bottom:26px}
.about-text h2 b{color:var(--blue-500);font-weight:600}
.about-text p + p{margin-top:18px}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.tag{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 15px;border-radius:3px;
  background:var(--bg-soft-2);color:var(--blue-600);font-size:13px;letter-spacing:.6px;
  border:1px solid rgba(18,99,214,.12);
}
.about-media{position:relative}
.about-media .frame{
  position:relative;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-l);
  aspect-ratio:4/3.4;
}
.about-media .frame img{width:100%;height:100%;object-fit:cover}
.about-media .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(10,58,134,.18),transparent 55%)}
.about-media .deco{
  position:absolute;right:-20px;bottom:-20px;width:132px;height:132px;z-index:-1;border-radius:8px;
  border:1px solid rgba(18,99,214,.22);
  background:repeating-linear-gradient(135deg,rgba(18,99,214,.10) 0 1px,transparent 1px 9px);
}
.about-media .badge{
  position:absolute;left:-28px;bottom:-26px;background:#fff;border-radius:6px;padding:22px 26px;
  box-shadow:var(--shadow-l);border-left:3px solid var(--blue-500);min-width:210px;
}
.about-media .badge b{display:block;font-size:30px;color:var(--ink);line-height:1.1}
.about-media .badge b small{font-size:14px;color:var(--blue-500);margin-left:3px;font-weight:500}
.about-media .badge span{font-size:12.5px;color:var(--muted);letter-spacing:1.2px}

/* =========================================================
   业务卡片
   ========================================================= */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.biz-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:40px 34px 34px;transition:all .38s var(--ease);overflow:hidden;
}
.biz-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--blue-500),var(--cyan-400));transition:width .45s var(--ease);
}
.biz-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:rgba(18,99,214,.22)}
.biz-card:hover::before{width:100%}
.biz-card .num{
  position:absolute;right:26px;top:22px;font-size:52px;font-weight:700;color:rgba(18,99,214,.06);
  line-height:1;letter-spacing:-2px;font-variant-numeric:tabular-nums;
}
.biz-icon{
  width:56px;height:56px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(18,99,214,.1),rgba(53,201,242,.06));color:var(--blue-500);
  margin-bottom:26px;transition:.4s var(--ease);
}
.biz-icon svg{width:26px;height:26px}
.biz-card:hover .biz-icon{background:linear-gradient(140deg,var(--blue-600),var(--blue-500));color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(18,99,214,.3)}
.biz-card h3{font-size:21px;margin-bottom:10px;letter-spacing:.8px}
.biz-card .sub{font-size:13px;color:var(--blue-500);letter-spacing:1px;margin-bottom:20px}
.biz-card ul{border-top:1px solid var(--line-2);padding-top:18px}
.biz-card li{position:relative;padding-left:16px;font-size:14px;line-height:1.9;color:var(--body)}
.biz-card li::before{content:"";position:absolute;left:0;top:12px;width:5px;height:5px;border-radius:1px;background:var(--blue-400);transform:rotate(45deg);opacity:.7}
.biz-card .more{display:inline-flex;align-items:center;gap:7px;margin-top:22px;font-size:13.5px;color:var(--blue-600);letter-spacing:.6px}
.biz-card .more svg{width:15px;height:15px;transition:transform .3s}
.biz-card:hover .more svg{transform:translateX(4px)}

/* =========================================================
   发展历程
   ========================================================= */
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:20px}
.timeline::before{
  content:"";position:absolute;left:0;right:calc(33.333% - 26px);top:26px;height:1px;
  background:linear-gradient(90deg,rgba(18,99,214,.35),rgba(18,99,214,.12) 60%,rgba(18,99,214,.2));
}
.tl-item{position:relative;padding-right:42px}
.tl-item:last-child{padding-right:0}
.tl-dot{
  position:relative;width:52px;height:52px;border-radius:50%;background:#fff;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:var(--blue-500);letter-spacing:.5px;z-index:2;
  transition:.35s var(--ease);
}
.tl-item:hover .tl-dot{background:var(--blue-500);color:#fff;border-color:var(--blue-500);box-shadow:0 8px 20px rgba(18,99,214,.28)}
.tl-item h3{font-size:20px;margin:24px 0 12px;letter-spacing:.8px}
.tl-item p{font-size:14.5px;line-height:1.95}

/* =========================================================
   场景四宫格（产/护/检/视）
   ========================================================= */
.scene-wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.scene-media{position:relative;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m);aspect-ratio:16/13}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-media .overlay{
  position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,18,43,.88),rgba(4,18,43,.1) 55%);
  display:flex;flex-direction:column;justify-content:flex-end;padding:34px;
}
.scene-media .overlay p{color:#fff;font-size:17px;letter-spacing:1px;line-height:1.7}
.scene-media .overlay span{color:rgba(255,255,255,.55);font-size:12.5px;letter-spacing:2px;margin-bottom:8px}
.scene-list{display:grid;gap:2px}
.scene-item{
  display:grid;grid-template-columns:54px 1fr;gap:20px;align-items:flex-start;
  padding:24px 26px;border-radius:6px;transition:.32s var(--ease);border:1px solid transparent;
}
.scene-item:hover{background:#fff;border-color:var(--line);box-shadow:var(--shadow-s);transform:translateX(4px)}
.scene-ico{
  width:54px;height:54px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--blue-600),var(--blue-400));color:#fff;font-size:19px;font-weight:600;
  box-shadow:0 8px 18px rgba(18,99,214,.22);
}
.scene-item h3{font-size:17.5px;margin-bottom:6px;letter-spacing:.6px}
.scene-item p{font-size:14px;line-height:1.85;color:var(--body)}

/* =========================================================
   平台（深色）
   ========================================================= */
.platform{position:relative;overflow:hidden;background:var(--navy-900);color:rgba(255,255,255,.7)}
.platform::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 78% 30%,rgba(18,99,214,.3),transparent 55%),linear-gradient(120deg,#04122B,#061A3A 60%,#072A5E);
}
.platform::after{
  content:"";position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(rgba(120,180,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(120,180,255,.08) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 70% 40%,#000,transparent 76%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000,transparent 76%);
}
.platform .container{position:relative;z-index:2}
.platform-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}
.platform h2{color:#fff;font-size:36px;line-height:1.35;margin-bottom:20px}
.platform h2 small{display:block;font-size:15px;font-weight:400;color:var(--cyan-400);letter-spacing:3px;margin-bottom:14px}
.platform p.lead{color:rgba(255,255,255,.66);line-height:2}
.plat-items{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:34px}
.plat-item{
  border:1px solid rgba(255,255,255,.12);border-radius:6px;padding:20px 18px;
  background:rgba(255,255,255,.03);transition:.32s var(--ease);
}
.plat-item:hover{background:rgba(53,201,242,.08);border-color:rgba(53,201,242,.36);transform:translateY(-3px)}
.plat-item b{display:block;color:#fff;font-size:14.5px;margin-bottom:7px;letter-spacing:.6px}
.plat-item span{font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.52)}
.plat-media{position:relative;border-radius:var(--radius-l);overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.45);aspect-ratio:16/12}
.plat-media img{width:100%;height:100%;object-fit:cover}
.plat-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(4,18,43,.72));border:1px solid rgba(255,255,255,.1)}

/* =========================================================
   案例
   ========================================================= */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:all .4s var(--ease);display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:rgba(18,99,214,.2)}
.case-thumb{position:relative;aspect-ratio:16/8.4;overflow:hidden;background:#0B1220}
.case-thumb img{width:100%;height:100%;object-fit:cover;object-position:center top;transition:transform .6s var(--ease)}
.case-card:hover .case-thumb img{transform:scale(1.04)}
.case-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,20,45,.34),transparent 60%)}
.case-cat{
  position:absolute;left:18px;top:18px;z-index:2;height:26px;padding:0 12px;border-radius:2px;
  background:rgba(6,22,48,.66);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.18);
  color:#DCEBFF;font-size:11.5px;letter-spacing:1.4px;display:inline-flex;align-items:center;
}
.case-body{padding:28px 30px 30px;flex:1;display:flex;flex-direction:column}
.case-body h3{font-size:19px;letter-spacing:.5px;margin-bottom:12px;line-height:1.5}
.case-body p{font-size:14px;line-height:1.9;color:var(--body)}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line-2)}
.case-tags span{font-size:12px;color:var(--blue-600);background:rgba(18,99,214,.07);padding:4px 10px;border-radius:2px;letter-spacing:.4px}

/* =========================================================
   能力 / 流程 / 层级
   ========================================================= */
.flow-4{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:8px}
.flow-4::before{content:"";position:absolute;left:0;right:0;top:25px;height:1px;background:linear-gradient(90deg,rgba(18,99,214,.32),rgba(53,201,242,.32),transparent)}
.flow-item{position:relative;padding:0 30px 0 0}
.flow-num{
  position:relative;z-index:2;width:50px;height:50px;border-radius:50%;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--blue-500);
  transition:.35s var(--ease);font-variant-numeric:tabular-nums;
}
.flow-item:hover .flow-num{background:var(--blue-500);border-color:var(--blue-500);color:#fff;box-shadow:0 8px 20px rgba(18,99,214,.26)}
.flow-item h3{font-size:17px;margin:22px 0 10px;letter-spacing:.8px}
.flow-item p{font-size:13.5px;line-height:1.9;color:var(--body)}
.section--soft .flow-num{background:var(--bg-soft)}

/* 分层架构图 */
.layers{display:grid;gap:10px;margin-top:12px}
.layer{
  display:grid;grid-template-columns:190px 1fr;align-items:center;gap:24px;
  border:1px solid var(--line);border-radius:6px;padding:18px 22px;background:#fff;
  transition:.3s var(--ease);
}
.layer:hover{border-color:rgba(18,99,214,.24);box-shadow:var(--shadow-s);transform:translateX(3px)}
.layer b{font-size:14.5px;color:var(--blue-600);letter-spacing:.6px;display:flex;align-items:center;gap:10px}
.layer b::before{content:"";width:6px;height:6px;background:var(--blue-500);border-radius:1px;transform:rotate(45deg)}
.layer span{font-size:13.5px;color:var(--body);line-height:1.8}
.layer--accent{background:linear-gradient(90deg,rgba(18,99,214,.06),rgba(53,201,242,.03));border-color:rgba(18,99,214,.18)}

/* 数据条 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:12px}
.metric{text-align:center;padding:34px 18px;background:#fff;border:1px solid var(--line);border-radius:6px;transition:.35s var(--ease)}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-s);border-color:rgba(18,99,214,.2)}
.metric b{display:block;font-size:38px;color:var(--blue-600);font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.metric b i{font-size:15px;font-style:normal;margin-left:3px;color:var(--blue-400)}
.metric span{display:block;margin-top:12px;font-size:13px;color:var(--muted);letter-spacing:1.2px}

/* =========================================================
   CTA
   ========================================================= */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(115deg,#072A5E,#0B4DA2 58%,#1263D6);padding:76px 0}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.3;
  background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at 60% 50%,#000,transparent 74%);
  -webkit-mask-image:radial-gradient(ellipse at 60% 50%,#000,transparent 74%);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,201,242,.28),transparent 66%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:50px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:32px;line-height:1.4;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.66);font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* =========================================================
   联系
   ========================================================= */
.contact-layout{display:grid;grid-template-columns:1.06fr .94fr;gap:60px;align-items:start}
.contact-title{font-size:32px;line-height:1.42;letter-spacing:.5px}
.contact-title b{color:var(--blue-500);font-weight:600}
.contact-lead{margin-top:18px;font-size:15px;line-height:1.95;color:var(--body);max-width:520px}
.contact-cards{display:grid;gap:14px;margin-top:36px}
.contact-card{display:flex;gap:18px;align-items:flex-start;padding:24px 26px;background:#fff;border:1px solid var(--line);border-radius:6px;transition:.32s var(--ease);color:inherit}
a.contact-card:hover{border-color:rgba(18,99,214,.28);box-shadow:var(--shadow-s);transform:translateY(-2px)}
.contact-card .ci{width:44px;height:44px;flex:none;border-radius:5px;background:rgba(18,99,214,.08);color:var(--blue-500);display:flex;align-items:center;justify-content:center}
.contact-card .ci svg{width:20px;height:20px}
.contact-card b{display:block;font-size:12.5px;color:var(--muted);letter-spacing:1.6px;font-weight:400;margin-bottom:6px}
.contact-card strong{display:block;font-size:16.5px;color:var(--ink);font-weight:500;letter-spacing:.4px;line-height:1.62}
.contact-card span{display:block;margin-top:8px;font-size:12.5px;line-height:1.75;color:var(--muted)}
.contact-card:hover strong{color:var(--blue-600)}

.contact-side{display:grid;gap:18px}
.cm-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.btn--light{background:#fff;color:#0A2E63;border:1px solid #fff}
.btn--light:hover{background:rgba(255,255,255,.9);color:var(--blue-600);transform:translateY(-2px)}
.visit-note{background:#fff;border:1px solid var(--line);border-radius:6px;padding:26px 28px}
.visit-note b{display:block;font-size:13.5px;letter-spacing:1.4px;color:var(--ink);margin-bottom:14px;padding-left:12px;border-left:2px solid var(--blue-500);line-height:1.1}
.visit-note li{position:relative;padding-left:14px;font-size:13px;line-height:1.9;color:var(--body);margin-bottom:9px}
.visit-note li:last-child{margin-bottom:0}
.visit-note li::before{content:"";position:absolute;left:0;top:11px;width:4px;height:4px;border-radius:50%;background:rgba(18,99,214,.45)}

.channel-band{margin-top:66px;padding-top:48px;border-top:1px solid var(--line)}
.channel-label{display:flex;align-items:baseline;gap:14px;margin-bottom:28px}
.channel-label span{font-size:19px;letter-spacing:2px;color:var(--ink);font-weight:600}
.channel-label em{font-style:normal;font-size:11.5px;letter-spacing:2.4px;color:var(--muted);text-transform:uppercase}
.channel-band .mini-card{display:flex;flex-direction:column}
.channel-band .mini-card p{flex:1}
.mc-link{display:inline-block;margin-top:18px;font-size:13px;letter-spacing:.4px;color:var(--blue-500);border-bottom:1px solid rgba(18,99,214,.28);padding-bottom:2px;transition:.25s var(--ease)}
.mc-link:hover{color:var(--blue-600);border-color:var(--blue-600)}
.mc-link--plain{color:var(--ink-2);border-bottom:0;font-size:12.5px;line-height:1.7}
.mc-link--plain:hover{color:var(--ink-2)}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.5);padding:72px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(53,201,242,.4),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1.1fr;gap:50px;padding-bottom:56px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text em{color:rgba(255,255,255,.4)}
.footer-brand p{margin-top:22px;font-size:13.5px;line-height:2;color:rgba(255,255,255,.42);max-width:330px}
.footer-group{display:flex;gap:10px;margin-top:22px;font-size:11.5px;color:rgba(255,255,255,.36);letter-spacing:1.2px}
.footer-group span{padding:4px 10px;border:1px solid rgba(255,255,255,.12);border-radius:2px}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:1.6px;margin-bottom:22px;font-weight:500}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.5);letter-spacing:.4px}
.footer-links a:hover{color:var(--cyan-400)}
.footer-contact li{font-size:13.5px;line-height:1.9;margin-bottom:14px;color:rgba(255,255,255,.48);display:flex;gap:10px}
.footer-contact svg{width:16px;height:16px;margin-top:5px;flex:none;color:var(--cyan-400);opacity:.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.3);letter-spacing:.4px}
.footer-bottom .fb-links{display:flex;gap:22px;padding-right:62px}
.footer-bottom a:hover{color:rgba(255,255,255,.7)}

/* 回到顶部 */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:4px;z-index:800;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-m);color:var(--blue-600);
  display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.35s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--blue-500);color:#fff;border-color:var(--blue-500)}
.to-top svg{width:18px;height:18px}

/* 动效 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}
.reveal[data-d="2"]{transition-delay:.2s}
.reveal[data-d="3"]{transition-delay:.3s}
.reveal[data-d="4"]{transition-delay:.4s}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  .hero h1{font-size:50px}
  .hero-stats b{font-size:27px}
  .about-grid,.scene-wrap,.platform-grid,.contact-layout{gap:44px}
  .footer-grid{grid-template-columns:1.3fr .8fr 1fr;gap:40px}
  .footer-grid .footer-col--biz{display:none}
}
@media (max-width:980px){
  .section{padding:74px 0}
  .sec-head h2{font-size:31px}
  .hero h1{font-size:42px}
  .hero{min-height:auto;padding:140px 0 0}
  .hero-stats{margin-top:56px;grid-template-columns:repeat(2,1fr)}
  .hero-stats .stat{padding:24px 0}
  .hero-stats .stat + .stat{padding-left:0}
  .hero-stats .stat:nth-child(even){padding-left:26px}
  .hero-stats .stat:nth-child(even)::before{display:block}
  .hero-stats .stat:nth-child(odd)::before{display:none}
  .hero-stats .stat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.1)}
  .cards-3{grid-template-columns:1fr;gap:18px}
  .timeline{grid-template-columns:1fr;gap:0}
  .timeline::before{left:26px;right:auto;top:0;bottom:0;width:1px;height:auto;background:linear-gradient(180deg,rgba(18,99,214,.35),rgba(18,99,214,.06))}
  .tl-item{padding:0 0 38px 78px}
  .tl-item:last-child{padding-bottom:0}
  .tl-dot{position:absolute;left:0;top:0}
  .tl-item h3{margin-top:6px}
  .about-grid,.scene-wrap,.platform-grid,.contact-layout{grid-template-columns:1fr}
  .about-media{order:-1}
  .about-media .badge{left:auto;right:16px;bottom:-24px}
  .case-grid{grid-template-columns:1fr}
  .flow-4{grid-template-columns:repeat(2,1fr);gap:34px 24px}
  .flow-4::before{display:none}
  .flow-item{padding-right:0}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .layer{grid-template-columns:1fr;gap:8px}
  .layer b{margin-bottom:2px}
  .nav,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav.is-open{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;left:0;right:0;top:var(--header-h);background:#fff;
    padding:10px 20px 22px;box-shadow:0 20px 40px rgba(9,32,72,.12);border-top:1px solid var(--line);
  }
  .nav.is-open > a{height:50px;padding:0 8px;color:var(--ink);font-size:15.5px;border-bottom:1px solid var(--line-2)}
  .nav.is-open > a::after{display:none}
  .nav.is-open > a.is-active{color:var(--blue-500)}
  .page-hero{padding:132px 0 62px}
  .page-hero h1{font-size:33px}
  .sec-head--split{flex-direction:column;align-items:flex-start;gap:18px}
  .cta-inner h2{font-size:26px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:58px 0}
  .hero{padding-top:118px}
  .hero h1{font-size:32px;line-height:1.32}
  .hero-lead{font-size:14.5px}
  .hero-badge{font-size:11px;letter-spacing:1.2px;padding:0 12px}
  .hero-stats b{font-size:23px}
  .hero-actions .btn{flex:1;padding:0 16px}
  .sec-head h2{font-size:25px}
  .about-text h2{font-size:24px}
  .about-media .badge{position:relative;left:0;right:0;bottom:0;margin-top:16px;min-width:0}
  .metrics{grid-template-columns:1fr 1fr;gap:12px}
  .metric{padding:24px 10px}
  .metric b{font-size:29px}
  .topbar{display:none}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid .footer-col--biz{display:block}
  .form-row{grid-template-columns:1fr}
  .cta-band{padding:56px 0}
  .cta-inner{gap:26px}
  .page-hero h1{font-size:27px}
  .page-hero p{font-size:14px}
  .scene-item{grid-template-columns:44px 1fr;gap:14px;padding:18px 14px}
  .scene-ico{width:44px;height:44px;font-size:16px}
  .case-body{padding:22px}
}

/* =========================================================
   内页补充组件
   ========================================================= */

/* 锚点二级导航 */
.subnav{position:sticky;top:var(--header-h);z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 6px 18px rgba(9,32,72,.04)}
.subnav-inner{display:flex;gap:8px;align-items:center;height:64px;overflow-x:auto;scrollbar-width:none}
.subnav-inner::-webkit-scrollbar{display:none}
.subnav a{
  position:relative;padding:8px 20px;font-size:14.5px;color:var(--ink-2);letter-spacing:.8px;border-radius:3px;
  white-space:nowrap;transition:.25s var(--ease);
}
.subnav a:hover{color:var(--blue-500);background:var(--bg-soft)}
.subnav a.is-active{color:#fff;background:linear-gradient(135deg,var(--blue-600),var(--blue-500));box-shadow:0 6px 16px rgba(18,99,214,.22)}
.subnav .sn-label{font-size:12px;letter-spacing:2px;color:var(--muted);margin-right:10px;padding-right:18px;border-right:1px solid var(--line);white-space:nowrap}

/* 集团关系链 */
.chain{display:grid;grid-template-columns:1fr 46px 1fr 46px 1fr;align-items:center;margin-top:14px}
.chain-item{background:#fff;border:1px solid var(--line);border-radius:6px;padding:30px 26px;text-align:center;transition:.35s var(--ease)}
.chain-item:hover{box-shadow:var(--shadow-m);border-color:rgba(18,99,214,.24);transform:translateY(-3px)}
.chain-item em{font-style:normal;display:block;font-size:11.5px;letter-spacing:2px;color:var(--muted);margin-bottom:12px}
.chain-item b{display:block;font-size:18px;color:var(--ink);letter-spacing:.6px;margin-bottom:8px}
.chain-item span{font-size:13px;color:var(--body);line-height:1.8}
.chain-item--hl{background:linear-gradient(150deg,#0A3A86,#1263D6);border-color:transparent;box-shadow:0 16px 36px rgba(10,58,134,.28)}
.chain-item--hl em{color:rgba(255,255,255,.55)}
.chain-item--hl b{color:#fff}
.chain-item--hl span{color:rgba(255,255,255,.66)}
.chain-arrow{display:flex;align-items:center;justify-content:center;color:rgba(18,99,214,.4)}
.chain-arrow svg{width:22px;height:22px}

/* 企业名片 */
.info-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow-m);overflow:hidden}
.info-panel .ip-head{padding:26px 30px;background:linear-gradient(120deg,#072A5E,#0B4DA2);color:#fff}
.info-panel .ip-head b{display:block;font-size:17px;letter-spacing:1px}
.info-panel .ip-head span{font-size:11.5px;letter-spacing:2px;color:rgba(255,255,255,.5)}
.info-panel ul{padding:10px 30px 26px}
.info-panel li{display:grid;grid-template-columns:88px 1fr;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);font-size:13.5px;line-height:1.8}
.info-panel li:last-child{border-bottom:0}
.info-panel li b{color:var(--muted);font-weight:400;letter-spacing:.6px}
.info-panel li span{color:var(--ink-2)}

/* 使命愿景 */
.mission-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:16px}
.mission-card{border:1px solid rgba(255,255,255,.12);border-radius:6px;padding:34px 30px;background:rgba(255,255,255,.03);transition:.35s var(--ease)}
.mission-card:hover{background:rgba(53,201,242,.07);border-color:rgba(53,201,242,.3);transform:translateY(-4px)}
.mission-card em{font-style:normal;font-size:11.5px;letter-spacing:2.4px;color:var(--cyan-400);display:block;margin-bottom:16px}
.mission-card b{display:block;font-size:18px;color:#fff;margin-bottom:12px;letter-spacing:.6px}
.mission-card p{font-size:13.5px;line-height:1.95;color:rgba(255,255,255,.58)}

/* 通用四列卡 */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:30px 26px;transition:.35s var(--ease);position:relative;overflow:hidden}
.mini-card::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--blue-500),var(--cyan-400));transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.mini-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:rgba(18,99,214,.2)}
.mini-card:hover::after{transform:scaleX(1)}
.mini-card .mc-ico{width:46px;height:46px;border-radius:5px;background:rgba(18,99,214,.08);color:var(--blue-500);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.mini-card .mc-ico svg{width:22px;height:22px}
.mini-card h3{font-size:17px;margin-bottom:10px;letter-spacing:.6px}
.mini-card p{font-size:13.5px;line-height:1.9;color:var(--body)}
.mini-card .mc-tag{display:inline-block;margin-top:16px;font-size:11.5px;letter-spacing:1.2px;color:var(--blue-500);background:rgba(18,99,214,.07);padding:3px 9px;border-radius:2px}

/* 五步流程 */
.flow-5{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.flow-5::before{content:"";position:absolute;left:26px;right:26px;top:25px;height:1px;background:linear-gradient(90deg,rgba(18,99,214,.3),rgba(53,201,242,.3))}
.flow-5 .flow-item{padding-right:26px}
.flow-5 .flow-item:last-child{padding-right:0}

/* 案例详细行 */
.case-row{display:grid;grid-template-columns:1.08fr 1fr;gap:56px;align-items:center;padding:56px 0;border-bottom:1px solid var(--line)}
.case-row:last-child{border-bottom:0}
.case-row:nth-child(even) .case-row-media{order:2}
.case-row-media{border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m);border:1px solid var(--line);background:#0B1220}
.case-row-media img{width:100%;height:100%;object-fit:cover;display:block}
.case-row-body em{font-style:normal;font-size:11.5px;letter-spacing:2.4px;color:var(--blue-500);display:block;margin-bottom:14px}
.case-row-body h2{font-size:26px;line-height:1.45;margin-bottom:16px}
.case-row-body p{font-size:14.5px;line-height:2;color:var(--body)}
.case-row-body .kv{display:grid;grid-template-columns:64px 1fr;gap:12px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line-2);font-size:13.5px}
.case-row-body .kv b{color:var(--muted);font-weight:400;letter-spacing:.5px}
.case-row-body .kv span{color:var(--ink-2);line-height:1.8}
.case-row-body .case-tags{border-top:0;padding-top:0;margin-top:18px}

/* 引用带 */
.quote-band{background:var(--bg-soft);border-left:3px solid var(--blue-500);padding:26px 30px;border-radius:0 6px 6px 0}
.quote-band p{font-size:16px;line-height:1.9;color:var(--ink-2)}
.quote-band span{display:block;margin-top:10px;font-size:12.5px;letter-spacing:1.4px;color:var(--muted)}

/* 联系信息块 */
.contact-map-card{background:linear-gradient(150deg,#072A5E,#0B4DA2 60%,#1263D6);border-radius:var(--radius-l);padding:38px;color:#fff;position:relative;overflow:hidden}
.contact-map-card::after{content:"";position:absolute;inset:0;opacity:.25;background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);background-size:34px 34px}
.contact-map-card .cm-inner{position:relative;z-index:2}
.contact-map-card em{font-style:normal;font-size:11.5px;letter-spacing:2.4px;color:var(--cyan-400)}
.contact-map-card b{display:block;font-size:20px;margin:14px 0 10px;letter-spacing:.6px}
.contact-map-card p{font-size:14px;line-height:1.95;color:rgba(255,255,255,.66)}
.contact-map-card .cm-pin{margin-top:26px;display:flex;align-items:center;gap:12px;padding-top:22px;border-top:1px solid rgba(255,255,255,.15);font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.6px}

@media (max-width:1080px){
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .mission-grid{grid-template-columns:1fr}
  .flow-5{grid-template-columns:repeat(2,1fr);gap:34px 20px}
  .flow-5::before{display:none}
  .chain{grid-template-columns:1fr;gap:12px}
  .chain-arrow{transform:rotate(90deg);height:26px}
}
@media (max-width:980px){
  .case-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .case-row:nth-child(even) .case-row-media{order:0}
  .subnav-inner{height:56px}
  .subnav .sn-label{display:none}
}
@media (max-width:640px){
  .cards-4{grid-template-columns:1fr}
  .flow-5{grid-template-columns:1fr}
  .case-row-body h2{font-size:21px}
  .contact-map-card{padding:26px}
}

/* 深色区块内的图层与卡片适配 */
.platform .sec-head .sec-sub{color:rgba(255,255,255,.62)}
.platform .sec-head .eyebrow{color:var(--cyan-400)}
.platform .layer{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.12)}
.platform .layer b{color:var(--cyan-400)}
.platform .layer span{color:rgba(255,255,255,.6)}
.platform .layer:hover{background:rgba(255,255,255,.075);border-color:rgba(53,201,242,.34);box-shadow:none;transform:translateX(3px)}
.platform .layer--accent{background:linear-gradient(90deg,rgba(53,201,242,.14),rgba(53,201,242,.03));border-color:rgba(53,201,242,.3)}
.plat-items--stack{grid-template-columns:1fr !important}

@media (max-width:980px){
  .contact-layout{grid-template-columns:1fr;gap:34px}
  .contact-lead{max-width:none}
  .contact-cards{margin-top:28px}
  .channel-band{margin-top:48px;padding-top:36px}
  .channel-label{margin-bottom:22px}
}
@media (max-width:640px){
  .contact-card{padding:20px 20px;gap:14px}
  .contact-card strong{font-size:15px}
  .cm-actions{margin-top:22px}
  .cm-actions .btn{flex:1}
  .visit-note{padding:22px}
  .channel-label span{font-size:17px}
}

/* 服务支持 */
.support-band{
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  padding:34px 40px;
}
.support-item{padding:0 34px;border-left:1px solid var(--line)}
.support-item:first-child{padding-left:0;border-left:0}
.support-item:last-child{padding-right:0}
.support-item em{font-style:normal;display:block;font-size:11.5px;letter-spacing:2px;color:var(--muted);margin-bottom:12px}
.support-item b{display:block;font-size:16px;font-weight:500;color:var(--ink);letter-spacing:.3px;line-height:1.65}
.support-item b a{color:var(--ink)}
.support-item b a:hover{color:var(--blue-500)}
.support-item span{display:block;margin-top:9px;font-size:12.5px;color:var(--body);line-height:1.75}
.mc-links{display:flex;flex-direction:column;gap:7px;margin-top:17px}
.mc-links .mc-link{margin-top:0;align-self:flex-start}

@media (max-width:980px){
  .support-band{grid-template-columns:1fr;padding:8px 26px;gap:0}
  .support-item{padding:20px 0;border-left:0;border-top:1px solid var(--line)}
  .support-item:first-child{border-top:0}
}
@media (max-width:640px){
  .support-band{padding:6px 20px}
  .support-item b{font-size:15px}
}

/* 截图/静态预览模式：避免 100vh 撑高首屏 */
body.static-mode .hero{min-height:720px}