:root{
  --bg:#070b14;
  --bg-alt:#0c1220;
  --surface:rgba(255,255,255,0.045);
  --surface-border:rgba(255,255,255,0.09);
  --text:#f4f7fb;
  --text-dim:#a3adc2;
  --text-dimmer:#6d7891;
  --accent:#3ddad7;
  --accent-2:#4f8bff;
  --gold:#d4af6a;
  --radius:18px;
  --container:1180px;
  --shadow-lg:0 30px 80px -30px rgba(0,0,0,0.6);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

img{max-width:100%;display:block;}

a{color:inherit;text-decoration:none;}

.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;opacity:0.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.eyebrow{
  font-size:0.75rem;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:600;
  margin-bottom:14px;
}

.gradient-text{
  background:linear-gradient(100deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  display:block;
}

h1,h2,h3,h4{
  font-weight:700;
  letter-spacing:-0.01em;
  margin:0 0 16px;
}
h1{font-size:clamp(2.4rem,5.5vw,4.2rem);line-height:1.08;}
h2{font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1.15;}
h3{font-size:1.25rem;}
p{color:var(--text-dim);margin:0 0 16px;}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:15px 30px;
  border-radius:999px;
  font-weight:600;
  font-size:0.95rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(100deg,var(--accent),var(--accent-2));
  color:#06101f;
  box-shadow:0 10px 30px -8px rgba(79,139,255,0.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(79,139,255,0.7);}
.btn-ghost{
  background:rgba(255,255,255,0.04);
  color:var(--text);
  border-color:rgba(255,255,255,0.18);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{background:rgba(255,255,255,0.09);border-color:rgba(255,255,255,0.3);}
.btn-sm{padding:10px 20px;font-size:0.85rem;}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:18px 0;
  transition:background .3s ease, padding .3s ease, border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(7,11,20,0.82);
  backdrop-filter:blur(14px);
  padding:12px 0;
  border-bottom-color:rgba(255,255,255,0.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;letter-spacing:-0.02em;}
.main-nav{display:flex;gap:32px;flex:1;justify-content:center;}
.main-nav a{font-size:0.92rem;color:var(--text-dim);font-weight:500;transition:color .2s;}
.main-nav a:hover{color:var(--text);}
.header-actions{display:flex;align-items:center;gap:16px;}

.lang-switch{display:flex;gap:2px;background:rgba(255,255,255,0.05);border:1px solid var(--surface-border);border-radius:999px;padding:3px;flex-shrink:0;}
.lang-btn{
  background:transparent;border:none;color:var(--text-dimmer);
  font-size:0.78rem;font-weight:600;padding:6px 12px;border-radius:999px;cursor:pointer;transition:all .2s;
}
.lang-btn.active{background:var(--text);color:#06101f;}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px;}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;}

/* Hero */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  padding-top:100px;
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  z-index:-2;
}
.hero-wave{position:absolute;bottom:0;left:0;width:100%;height:220px;z-index:-1;}
.hero-content{position:relative;z-index:2;max-width:820px;}
.hero-sub{font-size:1.15rem;max-width:620px;color:var(--text-dim);}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:8px;}

/* Trust strip */
.trust-strip{padding:40px 0;border-top:1px solid var(--surface-border);border-bottom:1px solid var(--surface-border);background:var(--bg-alt);}
.trust-label{text-align:center;color:var(--text-dimmer);font-size:0.82rem;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:22px;}
.trust-logos{display:flex;justify-content:center;align-items:center;gap:48px;flex-wrap:wrap;}
.trust-logos span{font-size:1.05rem;font-weight:700;color:var(--text-dimmer);letter-spacing:0.01em;opacity:0.75;transition:opacity .2s,color .2s;}
.trust-logos span:hover{opacity:1;color:var(--text);}

/* Sections */
.section{padding:120px 0;position:relative;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:640px;margin:0 0 56px;}
.section-head p{font-size:1.05rem;}

/* About */
.about-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:72px;align-items:center;}
.about-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);}
.about-media img{width:100%;height:520px;object-fit:cover;}
.about-media-badge{
  position:absolute;bottom:20px;left:20px;right:20px;
  background:rgba(7,11,20,0.75);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:14px;padding:16px 20px;
  display:flex;flex-direction:column;gap:2px;
}
.about-media-badge strong{color:var(--accent);font-size:1.1rem;}
.about-media-badge span{font-size:0.85rem;color:var(--text-dim);}
.stat-row{display:flex;gap:40px;margin-top:32px;flex-wrap:wrap;}
.stat strong{display:block;font-size:1.8rem;background:linear-gradient(100deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat span{font-size:0.85rem;color:var(--text-dimmer);}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.service-card{
  background:var(--surface);
  border:1px solid var(--surface-border);
  border-radius:var(--radius);
  padding:36px 30px;
  transition:transform .3s ease, border-color .3s ease, background .3s ease;
}
.service-card:hover{transform:translateY(-6px);border-color:rgba(61,218,215,0.4);background:rgba(255,255,255,0.07);}
.card-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(61,218,215,0.15),rgba(79,139,255,0.15));
  color:var(--accent);margin-bottom:22px;
}
.card-icon svg{width:28px;height:28px;}
.service-card p{font-size:0.95rem;margin-bottom:0;}

/* Showcase */
.showcase{display:grid;grid-template-columns:1fr 1fr;}
.showcase-tile{position:relative;height:420px;overflow:hidden;}
.showcase-tile img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.showcase-tile:hover img{transform:scale(1.06);}
.showcase-tile::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg, rgba(7,11,20,0.88), rgba(7,11,20,0.15) 60%);
}
.showcase-overlay{position:absolute;left:0;right:0;bottom:0;padding:32px;z-index:1;}
.showcase-overlay .eyebrow{margin-bottom:8px;}
.showcase-overlay h3{margin:0;font-size:1.3rem;max-width:360px;}

/* GEO section */
.geo-section{overflow:hidden;}
.geo-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 75% 30%, rgba(79,139,255,0.22), transparent 55%),
    radial-gradient(circle at 20% 80%, rgba(61,218,215,0.18), transparent 50%),
    linear-gradient(rgba(7,11,20,0.94), rgba(7,11,20,0.97)),
    url('https://images.unsplash.com/photo-1560472354-b33ff0c44a43?q=80&w=1600&auto=format&fit=crop');
  background-size:cover;
  background-position:center;
  z-index:0;
}
.geo-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr 0.9fr;gap:72px;align-items:center;}
.geo-list{list-style:none;padding:0;margin:0 0 32px;display:flex;flex-direction:column;gap:12px;}
.geo-list li{
  padding-left:28px;position:relative;color:var(--text-dim);font-size:0.98rem;
}
.geo-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:4px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.geo-visual{position:relative;height:420px;}
.geo-orb{
  position:absolute;inset:10%;
  border-radius:50%;
  background:conic-gradient(from 180deg, rgba(61,218,215,0.25), rgba(79,139,255,0.25), rgba(61,218,215,0.25));
  filter:blur(40px);
  animation:spin 14s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.geo-card{
  position:absolute;
  background:rgba(12,18,32,0.85);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:14px;
  padding:16px 20px;
  max-width:280px;
  box-shadow:var(--shadow-lg);
  display:flex;
  gap:12px;
  align-items:flex-start;
}
.geo-card p{margin:0;font-size:0.88rem;color:var(--text);font-style:italic;}
.geo-card-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);margin-top:6px;flex-shrink:0;box-shadow:0 0 12px var(--accent);}
.geo-card{top:12%;left:0;animation:float1 6s ease-in-out infinite;}
.geo-card-2{top:56%;left:32%;animation:float2 7s ease-in-out infinite;}
@keyframes float1{0%,100%{transform:translateY(0);}50%{transform:translateY(-14px);}}
@keyframes float2{0%,100%{transform:translateY(0);}50%{transform:translateY(12px);}}

/* Why */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.why-item{padding-top:8px;border-top:1px solid var(--surface-border);}
.why-num{color:var(--accent);font-weight:700;font-size:0.85rem;letter-spacing:0.05em;}
.why-item h4{margin:14px 0 10px;font-size:1.05rem;}
.why-item p{font-size:0.92rem;margin:0;}

/* Partners */
.partner-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.partner-tile{
  aspect-ratio:1.6;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);
  border:1px solid var(--surface-border);
  border-radius:16px;
  font-weight:600;font-size:0.98rem;color:var(--text-dim);
  text-align:center;padding:12px;line-height:1.35;
  transition:all .25s ease;
}
.partner-tile:hover{color:var(--text);border-color:rgba(61,218,215,0.4);transform:translateY(-4px);}

/* Contact */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:64px;}
.contact-info{margin-top:32px;display:flex;flex-direction:column;gap:18px;}
.contact-info-item{display:flex;flex-direction:column;gap:2px;padding:16px 20px;background:var(--surface);border:1px solid var(--surface-border);border-radius:12px;}
.contact-info-item strong{font-size:0.9rem;color:var(--text);}
.contact-info-item span{font-size:0.88rem;color:var(--text-dimmer);}

.contact-form{
  background:var(--surface);
  border:1px solid var(--surface-border);
  border-radius:var(--radius);
  padding:36px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-field{margin-bottom:20px;}
.form-field label{display:block;font-size:0.82rem;color:var(--text-dimmer);margin-bottom:8px;font-weight:600;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--surface-border);
  border-radius:10px;
  padding:12px 14px;
  color:var(--text);
  font-size:0.95rem;
  font-family:inherit;
  transition:border-color .2s;
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--accent);}
.form-field textarea{resize:vertical;}
.form-note{font-size:0.78rem;color:var(--text-dimmer);margin-top:14px;}

/* Footer */
.site-footer{padding:48px 0;border-top:1px solid var(--surface-border);}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px;}
.footer-logo{font-size:1.05rem;}
.footer-nav{display:flex;gap:24px;flex-wrap:wrap;}
.footer-nav a{font-size:0.88rem;color:var(--text-dimmer);}
.footer-nav a:hover{color:var(--text);}
.footer-copy{font-size:0.82rem;color:var(--text-dimmer);margin:0;}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* Responsive */
@media (max-width:980px){
  .showcase{grid-template-columns:1fr;}
  .main-nav{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    background:rgba(7,11,20,0.97);
    backdrop-filter:blur(14px);
    flex-direction:column;
    padding:24px 28px;
    gap:20px;
    border-bottom:1px solid var(--surface-border);
  }
  .main-nav.open{display:flex;}
  .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);}
  .about-grid,.geo-grid,.contact-grid{grid-template-columns:1fr;gap:40px;}
  .card-grid{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .partner-grid{grid-template-columns:repeat(3,1fr);}
  .about-media img{height:360px;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
}
@media (max-width:560px){
  .form-row{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr;}
  .partner-grid{grid-template-columns:repeat(2,1fr);}
  .trust-logos{gap:28px;}
  .section{padding:80px 0;}
  .site-header .logo span{display:none;}
  .header-inner{padding-left:20px;padding-right:20px;}
  .header-actions{gap:8px;}
  .lang-btn{padding:5px 8px;font-size:0.7rem;}
}