/* ============================================================
   九境智能科技（徐州）有限公司 官网
   Design system: deep navy + tech blue + gold accent
   ============================================================ */
:root{
  --navy-950:#060f1f;
  --navy-900:#081a33;
  --navy-800:#0c2346;
  --navy-700:#123060;
  --blue-600:#1c5ee0;
  --blue-500:#2f7bff;
  --cyan-400:#38c6ff;
  --gold-500:#d4af37;
  --gold-300:#f0d97a;
  --ink:#17253f;
  --ink-2:#43536e;
  --ink-3:#6b7b95;
  --line:#dde5f0;
  --bg-light:#f4f7fc;
  --bg-card:#ffffff;
  --white:#ffffff;
  --grad-blue:linear-gradient(135deg,#1c5ee0 0%,#2f7bff 45%,#38c6ff 100%);
  --grad-dark:linear-gradient(160deg,#060f1f 0%,#0a2142 55%,#0c2a55 100%);
  --grad-gold:linear-gradient(135deg,#b8912a 0%,#d4af37 50%,#f0d97a 100%);
  --shadow-sm:0 4px 14px rgba(12,35,70,.08);
  --shadow-md:0 12px 32px rgba(12,35,70,.12);
  --shadow-lg:0 24px 60px rgba(6,15,31,.28);
  --radius:14px;
  --radius-lg:22px;
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-en:Arial,"Helvetica Neue",sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC","SimSun",serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-cn);
  color:var(--ink);
  background:var(--white);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:inherit}
::selection{background:rgba(47,123,255,.25)}

/* ---------- layout ---------- */
.container{width:min(var(--container),92%);margin-inline:auto}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-dark{background:var(--grad-dark);color:#e8f0ff}
.section-light{background:var(--bg-light)}
.section-white{background:#fff}
.grid{display:grid;gap:28px}

/* ---------- typography ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-en);font-size:13px;font-weight:700;
  letter-spacing:.32em;text-transform:uppercase;color:var(--blue-500);
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--grad-gold)}
.section-dark .eyebrow{color:var(--cyan-400)}
.h2{
  font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.3;
  color:var(--navy-900);letter-spacing:.01em;margin:14px 0 10px;
}
.section-dark .h2{color:#fff}
.h2 em{font-style:normal;color:var(--blue-500)}
.section-dark .h2 em{color:var(--cyan-400)}
.lead{color:var(--ink-2);font-size:17px;max-width:780px}
.section-dark .lead{color:#b9cbe8}
.sec-head{max-width:820px;margin-bottom:52px}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head.center .eyebrow::after{content:"";width:34px;height:2px;background:var(--grad-gold)}
.center{text-align:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:999px;font-size:15px;font-weight:700;
  transition:all .28s ease;white-space:nowrap;border:1px solid transparent;
}
.btn-primary{background:var(--grad-blue);color:#fff;box-shadow:0 8px 24px rgba(47,123,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(47,123,255,.5)}
.btn-gold{background:var(--grad-gold);color:#1c2410;box-shadow:0 8px 24px rgba(212,175,55,.35)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(212,175,55,.5)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}
.btn-outline{border-color:var(--blue-500);color:var(--blue-500);background:transparent}
.btn-outline:hover{background:var(--blue-500);color:#fff}
.btn-lg{padding:17px 40px;font-size:16px}
.btn-sm{padding:9px 20px;font-size:14px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  transition:all .35s ease;padding:18px 0;
  background:linear-gradient(180deg,rgba(6,15,31,.55),rgba(6,15,31,0));
}
.site-header.scrolled{
  padding:10px 0;background:rgba(6,15,31,.92);
  backdrop-filter:blur(14px);box-shadow:0 8px 30px rgba(0,0,0,.25);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px}
.brand svg,.brand img{height:52px;width:auto}
.brand-name{display:flex;flex-direction:column;line-height:1.15;color:#fff;font-size:17px;font-weight:800;letter-spacing:.02em;white-space:nowrap}
.brand-name small{color:#8fb7ff;font-size:10px;font-weight:600;letter-spacing:.3em;margin-top:3px}
.main-nav ul{display:flex;gap:6px;align-items:center}
.main-nav a{
  display:block;padding:10px 16px;color:#d7e4f8;font-size:15px;font-weight:500;
  border-radius:8px;transition:all .25s;position:relative;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff}
.main-nav a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;
  background:var(--grad-gold);border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;position:relative;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:#fff;border-radius:2px;
  transition:all .3s;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.open span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  color:#fff;overflow:hidden;background:var(--navy-900);
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media video,.hero-media img{
  width:100%;height:100%;object-fit:cover;opacity:.5;
  filter:saturate(1.1) brightness(.85);
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(80% 60% at 70% 30%,rgba(47,123,255,.28),transparent 60%),
    linear-gradient(180deg,rgba(6,15,31,.55) 0%,rgba(6,15,31,.72) 55%,var(--navy-900) 100%);
}
.hero-particles{position:absolute;inset:0;z-index:2;pointer-events:none}
.hero-content{position:relative;z-index:3;width:100%;padding:150px 0 120px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 18px;border-radius:999px;font-size:13px;letter-spacing:.06em;
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);
  backdrop-filter:blur(8px);color:#d7e4f8;margin-bottom:26px;
}
.hero-badge i{width:8px;height:8px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 0 rgba(56,198,255,.7);animation:pulse 2s infinite}
.hero h1{
  font-size:clamp(34px,5.6vw,64px);font-weight:800;line-height:1.24;letter-spacing:.01em;
  text-shadow:0 4px 30px rgba(0,0,0,.35);
}
.hero h1 .gold{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .cyan{color:var(--cyan-400)}
.hero-sub{
  margin-top:22px;font-size:clamp(15px,1.6vw,19px);color:#c4d6f2;
  max-width:640px;line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px}
.hero-meta{
  margin-top:64px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.14);
  border-radius:16px;overflow:hidden;backdrop-filter:blur(10px);
}
.hero-meta .m{
  background:rgba(8,26,51,.55);padding:22px 18px;text-align:center;
}
.hero-meta .m b{
  display:block;font-size:clamp(22px,2.4vw,30px);font-weight:800;color:#fff;
}
.hero-meta .m b i{font-style:normal;color:var(--cyan-400)}
.hero-meta .m span{font-size:13px;color:#a9bfe0}
.scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:4;
  width:26px;height:44px;border:2px solid rgba(255,255,255,.5);border-radius:14px;
}
.scroll-hint::after{
  content:"";position:absolute;left:50%;top:8px;width:4px;height:8px;border-radius:2px;
  background:#fff;transform:translateX(-50%);animation:scrolldot 1.8s infinite;
}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(56,198,255,.7)}70%{box-shadow:0 0 0 10px rgba(56,198,255,0)}100%{box-shadow:0 0 0 0 rgba(56,198,255,0)}}
@keyframes scrolldot{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,16px)}}

/* ---------- page hero (inner pages) ---------- */
.page-hero{
  position:relative;padding:180px 0 90px;color:#fff;overflow:hidden;background:var(--navy-900);
}
.page-hero .bg{position:absolute;inset:0;z-index:0}
.page-hero .bg img{width:100%;height:100%;object-fit:cover;opacity:.32;filter:brightness(.7)}
.page-hero .bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,15,31,.6),rgba(8,26,51,.82) 70%,var(--navy-900));
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(30px,4.6vw,50px);font-weight:800;margin:14px 0 12px}
.page-hero p{color:#c4d6f2;max-width:720px;font-size:16.5px}
.crumbs{display:flex;gap:8px;font-size:13.5px;color:#8fa8cf;margin-bottom:20px}
.crumbs a:hover{color:#fff}
.crumbs i{color:#5d7fb3;font-style:normal}

/* ---------- about intro ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about-media{position:relative}
.about-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
.about-media::before{
  content:"";position:absolute;inset:-18px auto auto -18px;width:60%;height:60%;
  border:2px solid var(--gold-500);border-radius:var(--radius-lg);opacity:.55;z-index:-1;
}
.about-media .tag{
  position:absolute;right:20px;bottom:20px;padding:16px 22px;border-radius:14px;
  background:rgba(8,26,51,.82);backdrop-filter:blur(10px);color:#fff;border:1px solid rgba(255,255,255,.18);
}
.about-media .tag b{display:block;font-size:22px;color:var(--gold-300)}
.about-media .tag span{font-size:12.5px;color:#b9cbe8}
.about-list{display:grid;gap:16px;margin:26px 0 30px}
.about-list li{display:flex;gap:14px;align-items:flex-start}
.about-list .ic{
  flex:0 0 auto;width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,123,255,.12);color:var(--blue-500);font-size:20px;
}
.about-list b{color:var(--navy-900);display:block}
.about-list span{color:var(--ink-2);font-size:14.5px}
/* GEO 区块左侧图标：背景色更浅 */
#geo .about-list .ic,#platform .about-list .ic,#cross .about-list .ic,#hardware .about-list .ic{background:rgba(47,123,255,.06)}

/* ---------- cards ---------- */
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;transition:all .35s ease;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.service-card{background:var(--bg-card)}
.service-card .pic{border-radius:14px;overflow:hidden;margin:-8px -8px 22px;position:relative}
.service-card .pic img{width:100%;height:210px;object-fit:cover;transition:transform .6s ease}
.service-card:hover .pic img{transform:scale(1.07)}
.service-card .pic .no{
  position:absolute;left:14px;bottom:12px;font-family:var(--font-en);font-weight:800;
  font-size:34px;color:rgba(255,255,255,.85);text-shadow:0 2px 14px rgba(0,0,0,.4);
  letter-spacing:.04em;
}
.service-card h3{font-size:20px;color:var(--navy-900);margin-bottom:10px}
.service-card p{color:var(--ink-2);font-size:14.5px;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{
  padding:4px 12px;border-radius:999px;font-size:12px;color:var(--blue-600);
  background:rgba(47,123,255,.09);border:1px solid rgba(47,123,255,.18);
}
.card-link{margin-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--blue-500);font-weight:700;font-size:14px}
.card-link svg{transition:transform .25s}
.card-link:hover svg{transform:translateX(4px)}


/* feature / value cards */
.f-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 30px;transition:all .35s;
}
.f-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.f-card .ic{
  width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:26px;color:#fff;background:var(--grad-blue);box-shadow:0 8px 20px rgba(47,123,255,.3);
  margin-bottom:20px;
}
.f-card h3{font-size:19px;color:var(--navy-900);margin-bottom:10px}
.f-card p{color:var(--ink-2);font-size:14.5px}
/* 组织架构部门图标：去掉底色与圆框，仅保留图标本身 */
.f-card .ic.ic-plain{width:24px;height:24px;background:none;box-shadow:none;border-radius:0}

/* ---------- stats ---------- */
.stats-band{background:var(--grad-dark);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 20% 20%,rgba(47,123,255,.22),transparent 60%)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;position:relative}
.stat{text-align:center;padding:10px}
.stat b{display:block;font-size:clamp(34px,4.4vw,54px);font-weight:800;background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.stat b small{font-size:.45em;font-weight:700;margin-left:2px}
.stat span{color:#b9cbe8;font-size:14.5px}
.stat .ln{width:44px;height:2px;background:rgba(255,255,255,.25);margin:12px auto 8px}

/* ---------- process timeline ---------- */
.process{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 28px;position:relative}
.process::before{content:none}
.process .step{text-align:center;padding:28px 20px 24px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);position:relative;transition:transform .25s ease,box-shadow .25s ease}
.process .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.process .step .dot{
  width:60px;height:60px;margin:0 auto 18px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--grad-blue);color:#fff;font-family:var(--font-en);font-weight:800;font-size:20px;
  box-shadow:0 10px 26px rgba(47,123,255,.35);position:relative;z-index:2;
}
.process .step h4{font-size:16px;color:var(--navy-900);margin-bottom:8px}
.process .step p{font-size:13px;color:var(--ink-2)}

/* ---------- vertical timeline (milestones) ---------- */
.vtimeline{position:relative;max-width:860px;margin:0 auto;padding-left:40px}
.vtimeline::before{content:"";position:absolute;left:14px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--blue-500),var(--cyan-400))}
.vtl-item{position:relative;padding:0 0 36px 26px}
.vtl-item::before{
  content:"";position:absolute;left:-29px;top:8px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--blue-500);box-shadow:0 0 0 5px rgba(47,123,255,.15);
}
.vtl-item.gold::before{border-color:var(--gold-500);box-shadow:0 0 0 5px rgba(212,175,55,.18)}
.vtl-item .date{font-family:var(--font-en);font-weight:700;color:var(--blue-500);font-size:14px;letter-spacing:.04em}
.vtl-item.gold .date{color:var(--gold-500)}
.vtl-item h4{color:#eef3ff;font-size:18px;margin:4px 0 8px}
.vtl-item p{color:#a9bfe0;font-size:14.5px}

/* ---------- table ---------- */
.info-table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm)}
.info-table th,.info-table td{padding:15px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.info-table th{background:var(--navy-900);color:#fff;font-weight:600;width:220px}
.info-table tr:last-child td{border-bottom:none}
.info-table td{color:var(--ink-2)}
.info-table tr:nth-child(even) td{background:#fafcff}

/* ---------- form ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-md)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-item{display:flex;flex-direction:column;gap:8px}
.form-item.full{grid-column:1/-1}
.form-item label{font-size:14px;font-weight:600;color:var(--navy-900)}
.form-item input,.form-item textarea,.form-item select{
  padding:13px 16px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;
  transition:border .25s,box-shadow .25s;color:var(--ink);width:100%;
}
.form-item input:focus,.form-item textarea:focus,.form-item select:focus{
  outline:none;border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(47,123,255,.15);background:#fff;
}
.form-item textarea{min-height:130px;resize:vertical}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-950);color:#9db1d0;font-size:14.5px}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:44px;padding:70px 0 46px}
.footer-logo{display:flex;align-items:center;gap:14px}
.footer-logo img{height:52px;width:auto}
.footer-logo-name{display:flex;flex-direction:column;line-height:1.2;color:#fff;font-size:19px;font-weight:800}
.footer-logo-name small{color:#8fb7ff;font-size:10.5px;font-weight:600;letter-spacing:.24em;margin-top:3px}
.footer-brand p{color:#8ea5c8;margin:16px 0 20px;max-width:340px;line-height:1.9}
.footer-brand .socials{display:flex;gap:10px}
.footer-brand .socials a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.14);color:#c6d6f0;transition:all .25s;
}
.footer-brand .socials a:hover{background:var(--blue-500);border-color:var(--blue-500);color:#fff}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--grad-gold)}
.footer-col ul{display:grid;gap:11px}
.footer-col a{transition:color .2s;display:inline-flex;align-items:center;gap:8px}
.footer-col a::before{content:"›";color:var(--gold-500)}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-contact li{display:flex;gap:10px;margin-bottom:13px;line-height:1.7}
.footer-contact .ic{color:var(--gold-500);flex:0 0 auto}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#6f86a8}
.footer-bottom a:hover{color:#fff}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,var(--navy-800),var(--blue-600) 60%,var(--cyan-400));
  color:#fff;padding:64px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 120% at 85% 20%,rgba(255,255,255,.22),transparent 60%)}
.cta-band h2{font-size:clamp(24px,3.4vw,36px);font-weight:800;position:relative;z-index:1}
.cta-band p{color:#dbe7ff;margin-top:10px;position:relative;z-index:1;max-width:600px}
.cta-band .btn{position:relative;z-index:1}

/* ---------- reveal animations ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}
.reveal.d5{transition-delay:.5s}.reveal.d6{transition-delay:.6s}
/* industry 3+2 staggered grid */
.industry-grid{display:grid;gap:28px 22px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
@media (min-width:901px){
  .industry-grid{grid-template-columns:repeat(6,1fr);gap:52px 38px}
  .industry-grid .industry-card:nth-child(1){grid-column:1/3}
  .industry-grid .industry-card:nth-child(2){grid-column:3/5}
  .industry-grid .industry-card:nth-child(3){grid-column:5/7}
  .industry-grid .industry-card:nth-child(4){grid-column:2/4;grid-row:2}
  .industry-grid .industry-card:nth-child(5){grid-column:4/6;grid-row:2}
}
@media (max-width:900px){
  .industry-grid{grid-template-columns:repeat(2,1fr);gap:34px 24px}
  .industry-grid .industry-card:last-child{grid-column:1/-1}
}
@media (max-width:560px){
  .industry-grid{grid-template-columns:1fr;gap:30px}
}
.industry-card{border-radius:var(--radius-lg);overflow:hidden;position:relative;height:290px;color:#fff;cursor:pointer;box-shadow:var(--shadow-sm);transition:opacity .8s ease,transform .5s cubic-bezier(.22,.61,.36,1),box-shadow .5s ease}
.industry-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 2.2s cubic-bezier(.25,.46,.45,.94)}
.industry-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,15,31,.05) 30%,rgba(6,15,31,.88));transition:opacity .3s}
.industry-card::before{content:"";position:absolute;top:0;bottom:0;left:-75%;width:55%;z-index:3;pointer-events:none;opacity:0;transform:skewX(-18deg);background:linear-gradient(105deg,transparent 42%,rgba(255,255,255,.18) 50%,transparent 58%);transition:left 1s ease,opacity .4s ease}
.industry-card .info{position:absolute;left:0;right:0;bottom:0;padding:24px 24px 22px;z-index:2}
.industry-card .info h3{font-size:19px;margin-bottom:6px;letter-spacing:.02em;transition:letter-spacing .4s ease}
.industry-card .info p{font-size:13.5px;color:#c6d6f0;opacity:0;transform:translateY(10px);transition:all .4s}
.industry-card:hover{transform:translateY(-10px);box-shadow:0 24px 55px rgba(6,15,31,.38),0 0 46px rgba(47,123,255,.22)}
.industry-card:hover img{transform:scale(1.09)}
.industry-card:hover::before{left:125%;opacity:1}
.industry-card:hover .info h3{letter-spacing:.07em}
.industry-card:hover .info p{opacity:1;transform:translateY(0)}
/* knowledge graph: 六大维度 2×3 蓝色节奏 */
.geo-grid-3x2{display:grid;grid-template-columns:repeat(3,1fr);gap:34px 30px}
.geo-grid-3x2 .geo-block{
  border:1px solid rgba(47,123,255,.24);border-left:4px solid #2f7bff;border-radius:14px;
  padding:28px 30px;box-shadow:0 6px 18px rgba(23,57,109,.06);
  transition:opacity .8s ease,transform .35s ease,box-shadow .35s ease,background .35s ease;
}
.geo-grid-3x2 .geo-block:nth-child(-n+3){background:linear-gradient(135deg,#eef4ff 0%,#e3edff 100%)}
.geo-grid-3x2 .geo-block:nth-child(n+4){background:linear-gradient(135deg,#e2ecff 0%,#d3e1ff 100%)}
.geo-grid-3x2 .geo-block:hover{transform:translateY(-6px);box-shadow:0 16px 38px rgba(47,123,255,.18)}
.geo-grid-3x2 .geo-block h3{color:#102a5c}
.geo-grid-3x2 .geo-block h3 .n{
  width:30px;height:30px;border-radius:10px;
  background:linear-gradient(135deg,#2f7bff,#1a56d6);color:#fff;font-size:14px;font-weight:700;
  box-shadow:0 6px 14px rgba(47,123,255,.28);
}
.geo-grid-3x2 .geo-block p{color:#3a5278}

/* knowledge graph: 四大适配机制 渐变边框（深→浅蓝） */
.geo-grad-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:30px 26px}
.geo-grad-grid .geo-block{
  position:relative;border-radius:14px;padding:30px 32px;
  border:1px solid transparent;
  background:
    linear-gradient(180deg,#ffffff 0%,#f3f8ff 100%) padding-box,
    linear-gradient(180deg,#1746a8 0%,#3f8bff 50%,#b6d0ff 100%) border-box;
  box-shadow:0 4px 14px rgba(6,15,31,.05);
  transition:opacity .8s ease,transform .35s ease,box-shadow .35s ease;
}
.geo-grad-grid .geo-block:hover{transform:translateY(-6px);box-shadow:0 10px 26px rgba(6,15,31,.08)}
.geo-grad-grid .geo-block h3{color:#102a5c}
.geo-grad-grid .geo-block p{color:#3a5278}

@media (max-width:900px){
  .geo-grid-3x2{grid-template-columns:repeat(2,1fr);gap:26px 22px}
  .geo-grad-grid{grid-template-columns:repeat(2,1fr);gap:26px 22px}
}
@media (max-width:560px){
  .geo-grid-3x2{grid-template-columns:1fr;gap:24px}
  .geo-grad-grid{grid-template-columns:1fr;gap:24px}
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:30px;z-index:900;width:46px;height:46px;border-radius:12px;
  background:var(--grad-blue);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{transform:translateY(-3px)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .main-nav{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:rgba(6,15,31,.98);z-index:1100;
    transition:right .35s ease;padding:90px 26px 30px;backdrop-filter:blur(16px)}
  .main-nav.open{right:0;box-shadow:-20px 0 60px rgba(0,0,0,.4)}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a{padding:14px 16px;font-size:16px}
  .nav-toggle{display:block}
  .header-cta .btn{display:none}
  .process{grid-template-columns:repeat(3,1fr);gap:24px 16px}
  .process::before{content:none}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-main{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:820px){
  .section{padding:70px 0}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .hero-meta{grid-template-columns:repeat(2,1fr)}
  .cta-band{padding:44px 30px}
  .form-grid{grid-template-columns:1fr}
  .page-hero{padding:150px 0 70px}
}
@media (max-width:560px){
  body{font-size:15px}
  .section{padding:58px 0}
  .brand svg,.brand img{height:44px}
  .brand-name{font-size:15px}
  .brand-name small{letter-spacing:.2em}
  .hero{min-height:92vh}
  .hero-content{padding:120px 0 90px}
  .hero-actions .btn{width:100%}
  .process{grid-template-columns:1fr 1fr;gap:18px 14px}
  .process .step{padding:22px 14px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:18px}
  .footer-main{grid-template-columns:1fr;gap:30px}
  .info-table th{width:130px;padding:12px 14px}
  .info-table td{padding:12px 14px}
  .form-card{padding:26px}
  .industry-card{height:210px}
}

/* ============================================================
   Knowledge graph page + toast + misc
   ============================================================ */
.kg-wrap{
  position:relative;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);
  background:radial-gradient(70% 90% at 50% 0%,rgba(47,123,255,.16),rgba(6,15,31,.4) 60%);
  padding:26px;min-height:520px;box-shadow:var(--shadow-lg);
}
#kgCanvas{width:100%;height:540px;display:block}
.kg-tip{
  display:none;position:absolute;z-index:30;max-width:240px;padding:12px 14px;
  background:rgba(6,15,31,.94);border:1px solid rgba(240,217,122,.35);border-radius:10px;
  color:#eaf1ff;font-size:13px;line-height:1.6;pointer-events:none;box-shadow:0 12px 30px rgba(0,0,0,.4);
}
.kg-tip b{color:#f0d97a;font-size:14px}
.kg-tip span{color:#9db8e0;font-size:12.5px}
.kg-tip em{font-style:normal;color:#c4d6f2;display:block;margin-top:4px;font-size:12px}
.kg-legend{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:20px}
.kg-legend span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#b9cbe8}
.kg-legend i{width:12px;height:12px;border-radius:50%;display:inline-block}
.kg-hint{text-align:center;color:#7f9ac2;font-size:13px;margin-top:14px}

.keywords{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:960px;margin:0 auto}
.keywords span{
  padding:9px 20px;border-radius:999px;font-size:14.5px;
  background:rgba(47,123,255,.08);border:1px solid rgba(47,123,255,.22);color:var(--blue-600);
  transition:all .25s;
}
.keywords span:hover{background:var(--blue-500);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.keywords span.hot{background:linear-gradient(135deg,rgba(212,175,55,.14),rgba(240,217,122,.18));border-color:rgba(212,175,55,.4);color:#8a6d14}

/* geo structure blocks */
.geo-block{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue-500);
  border-radius:12px;padding:24px 28px;box-shadow:var(--shadow-sm);transition:all .3s;
}
.geo-block:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.geo-block h3{font-size:17px;color:var(--navy-900);display:flex;align-items:center;gap:10px;margin-bottom:10px}
.geo-block h3 .n{width:26px;height:26px;border-radius:8px;background:var(--grad-blue);color:#fff;font-size:13px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.geo-block p{color:var(--ink-2);font-size:14.5px}

/* toast */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:2000;
  background:var(--navy-900);color:#fff;padding:15px 26px;border-radius:12px;
  box-shadow:var(--shadow-lg);font-size:14.5px;border:1px solid rgba(255,255,255,.14);
  animation:toastIn .4s ease;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,16px)}to{opacity:1;transform:translate(-50%,0)}}

/* contact info cards */
.contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;
  text-align:center;transition:all .3s;
}
.contact-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.contact-card .ic{
  width:58px;height:58px;margin:0 auto 16px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,123,255,.1);color:var(--blue-500);font-size:26px;
}
.contact-card h3{color:var(--navy-900);font-size:17px;margin-bottom:8px}
.contact-card p{color:var(--ink-2);font-size:14px;line-height:1.8}

@media (max-width:820px){
  #kgCanvas{height:420px}
  .kg-wrap{min-height:0;padding:14px}
}

/* two-column inline grids -> stack on mobile */
@media (max-width:820px){
  .grid[style*="grid-template-columns:"]{grid-template-columns:1fr !important}
}
/* ---------- advantages image-reveal cards ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.adv-card{position:relative;height:320px;border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.14);background:#0a2142;cursor:pointer;box-shadow:0 10px 30px rgba(6,15,31,.35)}
.adv-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.adv-card .ov{position:absolute;inset:0;background:rgba(6,15,31,.5);transition:background .3s ease}
.adv-card .content{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px 24px}
.adv-card h3{color:#fff;font-size:21px;font-weight:800;margin:0 0 14px;letter-spacing:.02em;transition:transform .3s ease;position:relative}
.adv-card p{color:#b9cbe8;font-size:14px;line-height:1.6;margin:0;max-width:92%;opacity:0;transform:translateY(18px);transition:opacity .3s ease,transform .3s ease;position:relative}
.adv-card:hover .ov,.adv-card:focus-within .ov{background:rgba(6,15,31,.78)}
.adv-card:hover h3,.adv-card:focus-within h3{transform:translateY(-26px)}
.adv-card:hover p,.adv-card:focus-within p{opacity:1;transform:translateY(0)}
@media (max-width:900px){
  .adv-grid{grid-template-columns:repeat(2,1fr);gap:18px}
}
@media (max-width:767px){
  .adv-grid{grid-template-columns:1fr;gap:16px}
  .adv-card{height:auto;min-height:300px}
  .adv-card .ov{background:linear-gradient(180deg,rgba(6,15,31,.25) 0%,rgba(6,15,31,.82) 55%)}
  .adv-card .content{justify-content:flex-end;text-align:left;align-items:flex-start;padding:22px 20px}
  .adv-card h3{transform:none;margin-bottom:10px}
  .adv-card p{opacity:1;transform:none}
}
/* ===== 资质与生态 · 科技感卡片 ===== */
.eco-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px;margin-top:6px}
.eco-card{
  position:relative;overflow:hidden;border-radius:20px;padding:38px 34px 40px;
  background:linear-gradient(165deg,#0c2a55 0%,#081a33 55%,#060f1f 100%);
  border:1px solid rgba(99,170,255,.22);
  box-shadow:0 16px 44px rgba(6,15,31,.22);
  transition:transform .45s cubic-bezier(.22,.68,.35,1.02),box-shadow .45s,border-color .45s;
}
.eco-card::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(90% 70% at 50% -12%,rgba(47,123,255,.30),transparent 58%),
             radial-gradient(55% 45% at 108% 108%,rgba(56,198,255,.16),transparent 60%)}
.eco-grid-bg{position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:radial-gradient(92% 88% at 50% 0%,#000 12%,transparent 72%);
  mask-image:radial-gradient(92% 88% at 50% 0%,#000 12%,transparent 72%)}
.eco-shine{position:absolute;top:-35%;left:-95%;width:55%;height:180%;z-index:2;pointer-events:none;
  transform:rotate(16deg) translateX(0);
  background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.05) 35%,rgba(140,215,255,.28) 50%,rgba(255,255,255,.05) 65%,transparent 100%);
  filter:blur(2px);
  transition:transform 1.05s ease}
.eco-card:hover{transform:translateY(-8px);border-color:rgba(99,200,255,.6);
  box-shadow:0 26px 60px rgba(8,26,51,.5),0 0 0 1px rgba(56,198,255,.14),0 0 46px rgba(47,123,255,.24)}
.eco-card:hover .eco-shine{transform:rotate(16deg) translateX(430%)}
.eco-no{display:inline-flex;align-items:center;gap:10px;position:relative;font-size:13px;font-weight:800;letter-spacing:3px;
  color:transparent;background:linear-gradient(90deg,#f0d97a,#d4af37 70%);-webkit-background-clip:text;background-clip:text;margin-bottom:20px}
.eco-no::after{content:"";width:36px;height:2px;border-radius:2px;background:linear-gradient(90deg,#38c6ff,#2f7bff);opacity:.85}
.eco-card h3{position:relative;color:#fff;font-size:20px;font-weight:700;margin:0 0 12px;line-height:1.45;transition:letter-spacing .35s ease}
.eco-card:hover h3{letter-spacing:.5px}
.eco-card p{position:relative;color:rgba(203,222,247,.84);font-size:14.5px;line-height:1.8;margin:0}
@media (max-width:640px){.eco-cards{gap:20px}.eco-card{padding:30px 24px 32px}}