/* ========== Reset & Base ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#003C5E;
  --navy-light:#005A8A;
  --navy-deep:#002847;
  --green:#70D010;
  --green-light:#8EE035;
  --green-soft:#E8F8DC;
  --sky:#B0D8EC;
  --sky-light:#E8F4FA;
  --bg:#F2F7FA;
  --white:#FFFFFF;
  --text:#1A2B3C;
  --text-sub:#5A7088;
  --text-light:#8DA0B5;
  --teal:#00897B;
  --teal-soft:#D8F0F0;
  --blue-soft:#E0EDF5;
  --radius:12px;
  --radius-lg:20px;
  --shadow:0 4px 20px rgba(0,60,94,.08);
  --shadow-lg:0 8px 40px rgba(0,60,94,.12);
  --shadow-card:0 2px 12px rgba(0,60,94,.06);
  --transition:all .3s cubic-bezier(.4,0,.2,1);
  --max-w:1280px;
}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}

/* ========== Utility ========== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:50px 0}
.text-center{text-align:center}
.text-green{color:var(--green)}
.text-navy{color:var(--navy)}
.text-sub{color:var(--text-sub)}
.bg-white{background:var(--white)}
.bg-soft{background:var(--bg)}
.bg-navy{background:var(--navy);color:var(--white)}
.bg-navy-deep{background:var(--navy-deep);color:var(--white)}
.bg-sky-light{background:var(--sky-light)}
.bg-green-soft{background:var(--green-soft)}

/* Section heading */
.sec-head{text-align:center;margin-bottom:56px}
.sec-tag{
  display:inline-block;
  font-size:13px;
  letter-spacing:.15em;
  color:var(--green);
  font-weight:600;
  text-transform:uppercase;
  margin-bottom:8px;
}
.sec-title{
  font-size:36px;
  font-weight:800;
  color:var(--navy);
  letter-spacing:-.02em;
  line-height:1.3;
}
.sec-desc{
  font-size:16px;
  color:var(--text-sub);
  margin-top:8px;
  max-width:640px;
  margin-left:auto;
  margin-right:auto;
}
.sec-title.light{color:var(--white)}
.sec-desc.light{color:rgba(255,255,255,.7)}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 28px;
  border-radius:50px;
  font-size:15px;
  font-weight:600;
  transition:var(--transition);
  cursor:pointer;
}
.btn-primary{
  background:var(--green);
  color:var(--navy-deep);
}
.btn-primary:hover{
  background:var(--green-light);
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(112,208,16,.35);
}
.btn-outline{
  background:transparent;
  color:var(--white);
  border:2px solid rgba(255,255,255,.4);
}
.btn-outline:hover{
  border-color:var(--green);
  color:var(--green);
}
.btn-navy{
  background:var(--navy);
  color:var(--white);
}
.btn-navy:hover{
  background:var(--navy-light);
  transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(0,60,94,.3);
}

/* ========== Navigation ========== */
.navbar{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(0,60,94,.06);
  transition:var(--transition);
}
.navbar.scrolled{
  box-shadow:0 2px 20px rgba(0,60,94,.08);
}
.nav-inner{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.nav-logo img{height:40px;width:auto}
.nav-menu{
  display:flex;
  align-items:center;
  gap:36px;
}
.nav-link{
  font-size:15px;
  font-weight:500;
  color:var(--text);
  position:relative;
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;
  bottom:0;left:0;
  width:0;height:2px;
  background:var(--green);
  transition:var(--transition);
}
.nav-link:hover,.nav-link.active{color:var(--navy)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-cta{
  background:var(--navy);
  color:var(--white);
  padding:10px 24px;
  border-radius:50px;
  font-size:14px;
  font-weight:600;
}
.nav-cta:hover{background:var(--navy-light);transform:translateY(-1px)}

/* Mobile menu toggle */
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  padding:8px;
}
.nav-toggle span{
  width:24px;height:2px;
  background:var(--navy);
  transition:var(--transition);
  border-radius:2px;
}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ========== Hero (Homepage) ========== */
.hero{
  position:relative;
  min-height:640px;
  background:linear-gradient(135deg,var(--navy-deep) 0%,var(--navy) 50%,var(--navy-light) 100%);
  color:var(--white);
  display:flex;
  align-items:center;
  overflow:hidden;
  padding-top:72px;
}
.hero::before{
  content:"";
  position:absolute;
  top:-100px;right:-100px;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(112,208,16,.15) 0%,transparent 70%);
  border-radius:50%;
}
.hero::after{
  content:"";
  position:absolute;
  bottom:-150px;left:-100px;
  width:400px;height:400px;
  background:radial-gradient(circle,rgba(0,90,138,.4) 0%,transparent 70%);
  border-radius:50%;
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 24px;
  width:100%;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(112,208,16,.15);
  border:1px solid rgba(112,208,16,.3);
  color:var(--green);
  padding:6px 16px;
  border-radius:50px;
  font-size:13px;
  font-weight:600;
  margin-bottom:24px;
}
.hero h1{
  font-size:52px;
  font-weight:800;
  line-height:1.25;
  margin-bottom:20px;
  letter-spacing:-.02em;
}
.hero h1 .highlight{color:var(--green)}
.hero p{
  font-size:18px;
  color:rgba(255,255,255,.75);
  max-width:560px;
  margin-bottom:36px;
  line-height:1.7;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{
  display:flex;
  gap:48px;
  margin-top:56px;
  flex-wrap:wrap;
}
.hero-stat .num{
  font-size:42px;
  font-weight:800;
  color:var(--green);
  font-family:"Arial",sans-serif;
  line-height:1;
}
.hero-stat .label{
  font-size:14px;
  color:rgba(255,255,255,.6);
  margin-top:6px;
}

/* ========== Page Banner ========== */
.page-banner{
  position:relative;
  background:linear-gradient(135deg,var(--navy-deep) 0%,var(--navy) 100%);
  color:var(--white);
  padding:140px 0 70px;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;
  top:-80px;right:-80px;
  width:350px;height:350px;
  background:radial-gradient(circle,rgba(112,208,16,.12) 0%,transparent 70%);
  border-radius:50%;
}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{
  font-size:42px;
  font-weight:800;
  margin-bottom:12px;
  letter-spacing:-.02em;
}
.page-banner .breadcrumb{
  font-size:14px;
  color:rgba(255,255,255,.5);
}
.page-banner .breadcrumb a:hover{color:var(--green)}
.page-banner .banner-desc{
  font-size:17px;
  color:rgba(255,255,255,.7);
  max-width:600px;
  margin-top:12px;
}

/* ========== Cards ========== */
.card{
  background:var(--white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:var(--transition);
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.card-body{padding:32px}
.card-bar{
  height:4px;
  width:100%;
}

/* Business card */
.biz-card{
  background:var(--white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:36px;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.biz-card::before{
  content:"";
  position:absolute;
  top:0;left:0;
  width:100%;height:4px;
  transition:var(--transition);
}
.biz-card.green::before{background:var(--green)}
.biz-card.navy::before{background:var(--navy)}
.biz-card.teal::before{background:var(--teal)}
.biz-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.biz-icon{
  width:56px;height:56px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:20px;
}
.biz-icon svg{width:28px;height:28px}
.biz-icon.green{background:var(--green-soft);color:var(--green)}
.biz-icon.navy{background:var(--blue-soft);color:var(--navy-light)}
.biz-icon.teal{background:var(--teal-soft);color:var(--teal)}
.biz-card h3{
  font-size:22px;
  font-weight:700;
  color:var(--navy);
  margin-bottom:12px;
}
.biz-card p{
  font-size:15px;
  color:var(--text-sub);
  line-height:1.7;
  margin-bottom:20px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;
  padding:6px 14px;
  border-radius:50px;
  font-size:13px;
  font-weight:500;
}
.tag.solid{background:var(--navy);color:var(--white)}
.tag.green{background:var(--green-soft);color:var(--green)}
.tag.blue{background:var(--blue-soft);color:var(--navy-light)}
.tag.teal{background:var(--teal-soft);color:var(--teal)}
.tag.outline{background:transparent;border:1px solid var(--sky);color:var(--text-sub)}

/* Advantage card */
.adv-card{
  background:var(--white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  padding:36px;
  transition:var(--transition);
  position:relative;
}
.adv-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.adv-num{
  position:absolute;
  top:24px;right:32px;
  font-size:48px;
  font-weight:800;
  color:var(--sky-light);
  font-family:"Arial",sans-serif;
  line-height:1;
}
.adv-icon{
  width:52px;height:52px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:20px;
}
.adv-icon svg{width:26px;height:26px}
.adv-card h3{
  font-size:20px;
  font-weight:700;
  color:var(--navy);
  margin-bottom:6px;
}
.adv-sub{
  font-size:13px;
  color:var(--text-light);
  margin-bottom:16px;
}
.adv-body{
  font-size:15px;
  color:var(--text-sub);
  line-height:1.8;
}

/* Metric box */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.metric-box{
  text-align:center;
  padding:36px 20px;
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  transition:var(--transition);
}
.metric-box:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.metric-box .num{
  font-size:48px;
  font-weight:800;
  color:var(--navy);
  font-family:"Arial",sans-serif;
  line-height:1;
}
.metric-box .num .unit{
  font-size:20px;
  color:var(--green);
  font-weight:700;
}
.metric-box .label{
  font-size:15px;
  color:var(--text-sub);
  margin-top:10px;
}

/* Tech metric */
.tech-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:20px;
}
.tech-item{
  background:var(--bg);
  border-radius:var(--radius);
  padding:24px;
  border-left:3px solid var(--green);
  transition:var(--transition);
}
.tech-item:hover{background:var(--white);box-shadow:var(--shadow-card)}
.tech-item .t-label{
  font-size:14px;
  font-weight:600;
  color:var(--navy);
  margin-bottom:4px;
}
.tech-item .t-desc{
  font-size:13px;
  color:var(--text-light);
  margin-bottom:12px;
}
.tech-item .t-value{
  font-size:28px;
  font-weight:800;
  color:var(--green);
  font-family:"Arial",sans-serif;
}

/* Case card */
.case-card{
  background:var(--white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:var(--transition);
}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.case-img{
  width:100%;
  height:240px;
  object-fit:cover;
  background:var(--sky-light);
}
.case-content{padding:28px}
.case-content h3{
  font-size:18px;
  font-weight:700;
  color:var(--navy);
  margin-bottom:8px;
}
.case-power{
  font-size:24px;
  font-weight:800;
  color:var(--green);
  font-family:"Arial",sans-serif;
  margin-bottom:12px;
}
.case-meta{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}
.case-meta strong{color:var(--navy)}

/* Investor tags */
.investor-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
}
.investor-tag{
  padding:10px 24px;
  background:var(--white);
  border:2px solid var(--sky);
  border-radius:50px;
  font-size:15px;
  font-weight:600;
  color:var(--navy);
  transition:var(--transition);
}
.investor-tag:hover{
  border-color:var(--green);
  color:var(--green);
  transform:translateY(-2px);
}

/* Platform pills */
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.platform-pill{
  background:var(--white);
  border:1px solid rgba(0,60,94,.08);
  border-radius:var(--radius);
  padding:20px;
  text-align:center;
  font-size:15px;
  font-weight:600;
  color:var(--navy);
  transition:var(--transition);
}
.platform-pill:hover{
  border-color:var(--green);
  color:var(--green);
  transform:translateY(-2px);
  box-shadow:var(--shadow-card);
}

/* Layer card (for architecture) */
.layer-card{
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  padding:24px 28px;
  border-left:4px solid;
  transition:var(--transition);
}
.layer-card:hover{transform:translateX(4px);box-shadow:var(--shadow-lg)}
.layer-card .layer-name{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
}
.layer-card .layer-items{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}

/* AI capability card */
.ai-card{
  background:var(--navy-deep);
  border-radius:var(--radius-lg);
  padding:32px;
  border:1px solid rgba(112,208,16,.15);
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.ai-card:hover{
  transform:translateY(-6px);
  border-color:var(--green);
  box-shadow:0 8px 30px rgba(112,208,16,.15);
}
.ai-badge{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  background:var(--green);
  color:var(--navy-deep);
  border-radius:50px;
  font-size:12px;
  font-weight:700;
  margin-bottom:16px;
}
.ai-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--white);
  margin-bottom:10px;
}
.ai-card p{
  font-size:14px;
  color:rgba(255,255,255,.6);
  line-height:1.7;
  margin-bottom:16px;
}
.ai-metric{
  font-size:24px;
  font-weight:800;
  color:var(--green);
  font-family:"Arial",sans-serif;
}

/* Feature row */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:60px;
  align-items:center;
}
.feature-img{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.feature-img img{width:100%;height:auto;display:block}
.feature-content h2{
  font-size:32px;
  font-weight:800;
  color:var(--navy);
  margin-bottom:16px;
  line-height:1.3;
}
.feature-content p{
  font-size:16px;
  color:var(--text-sub);
  line-height:1.8;
  margin-bottom:20px;
}

/* CTA section */
.cta-section{
  background:linear-gradient(135deg,var(--navy-deep) 0%,var(--navy) 100%);
  color:var(--white);
  text-align:center;
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  top:-50%;right:-20%;
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(112,208,16,.1) 0%,transparent 70%);
  border-radius:50%;
}
.cta-section .container{position:relative;z-index:2}
.cta-section h2{
  font-size:36px;
  font-weight:800;
  margin-bottom:12px;
}
.cta-section p{
  font-size:17px;
  color:rgba(255,255,255,.7);
  margin-bottom:32px;
}

/* ========== Footer ========== */
.footer{
  background:var(--navy-deep);
  color:rgba(255,255,255,.7);
  padding:60px 0 30px;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  margin-bottom:40px;
}
.footer-brand img{height:40px;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.5)}
.footer-col h4{
  font-size:16px;
  font-weight:600;
  color:var(--white);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{
  font-size:14px;
  color:rgba(255,255,255,.5);
  transition:var(--transition);
}
.footer-col ul li a:hover{color:var(--green)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:rgba(255,255,255,.4);
}
.footer-tagline{
  font-size:15px;
  color:var(--green);
  font-weight:600;
  margin-bottom:8px;
}

/* Office card */
.office-card{
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:var(--shadow-card);
  padding:28px;
  text-align:center;
  transition:var(--transition);
}
.office-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.office-card .city{
  font-size:20px;
  font-weight:700;
  color:var(--navy);
  margin-bottom:6px;
}
.office-card .addr{
  font-size:14px;
  color:var(--text-sub);
  line-height:1.6;
}

/* ========== Animations ========== */
.reveal{
  opacity:0;
  transform:translateY(30px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.visible{
  opacity:1;
  transform:translateY(0);
}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}

@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
.animate-float{animation:float 4s ease-in-out infinite}

/* ========== Responsive ========== */
@media(max-width:1024px){
  .hero h1{font-size:42px}
  .sec-title{font-size:30px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .feature-row{grid-template-columns:1fr;gap:32px}
}

@media(max-width:768px){
  .nav-menu{
    position:fixed;
    top:72px;left:0;right:0;
    background:var(--white);
    flex-direction:column;
    padding:24px;
    gap:16px;
    box-shadow:0 8px 30px rgba(0,60,94,.12);
    transform:translateY(-150%);
    transition:var(--transition);
    border-bottom:1px solid rgba(0,60,94,.06);
  }
  .nav-menu.open{transform:translateY(0)}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .section{padding:56px 0}
  .hero{min-height:560px;padding-top:72px}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  .hero-stats{gap:28px}
  .hero-stat .num{font-size:32px}
  .sec-title{font-size:26px}
  .sec-head{margin-bottom:36px}
  .page-banner{padding:120px 0 50px}
  .page-banner h1{font-size:30px}
  .biz-card{padding:28px}
  .card-body{padding:24px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric-box .num{font-size:36px}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
  .tech-grid{grid-template-columns:1fr}
}

@media(max-width:480px){
  .hero h1{font-size:26px}
  .hero-stats{gap:20px}
  .hero-stat .num{font-size:28px}
  .sec-title{font-size:22px}
  .metric-grid{grid-template-columns:1fr}
  .platform-grid{grid-template-columns:1fr}
}