:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #11111a;
  --bg-card: #161622;
  --bg-elevated: #1e1e2e;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #6c6c80;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --border: rgba(255,255,255,0.06);
  --success: #22c55e;
  --gradient-start: #6366f1;
  --gradient-end: #a855f7;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height:1.6;
  overflow-x:hidden;
}

a { color:inherit; text-decoration:none; }
ul { list-style:none; }
img { max-width:100%; display:block; }

.container {
  width:92%;
  max-width:1200px;
  margin:0 auto;
}

/* Language */
.lang-en, .lang-zh { display:none; }
.lang-en.active, .lang-zh.active { display:block; }
span.lang-en, span.lang-zh { display:none; }
span.lang-en.active, span.lang-zh.active { display:inline; }
li.lang-en.active, li.lang-zh.active { display:list-item; }

/* Header */
.header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(10,10,15,0.8);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:background .3s;
}
.header-inner {
  display:flex; align-items:center; justify-content:space-between;
  height:72px;
}
.logo {
  font-size:1.25rem; font-weight:700;
  background:linear-gradient(135deg, var(--accent), var(--gradient-end));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.nav { display:flex; align-items:center; gap:2rem; }
.nav a {
  font-size:.95rem; color:var(--text-secondary);
  position:relative; transition:color .2s;
}
.nav a::after {
  content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px;
  background:var(--accent); transition:width .3s;
}
.nav a:hover, .nav a.active { color:var(--text-primary); }
.nav a:hover::after, .nav a.active::after { width:100%; }
.lang-switch {
  display:flex; gap:.25rem; background:var(--bg-card); padding:.25rem; border-radius:.5rem;
}
.lang-switch button {
  background:transparent; border:none; color:var(--text-muted); padding:.35rem .7rem;
  border-radius:.35rem; cursor:pointer; font-size:.8rem; transition:all .2s;
}
.lang-switch button.active { background:var(--accent); color:#fff; }
.mobile-toggle { display:none; flex-direction:column; gap:5px; cursor:pointer; }
.mobile-toggle span { display:block; width:24px; height:2px; background:var(--text-primary); transition:.3s; }

/* Hero */
.hero {
  position:relative; padding:160px 0 100px;
  overflow:hidden;
}
.hero-bg {
  position:absolute; inset:0;
  background:radial-gradient(ellipse at 20% 30%, rgba(99,102,241,0.15) 0%, transparent 50%),
             radial-gradient(ellipse at 80% 70%, rgba(168,85,247,0.1) 0%, transparent 50%);
}
.hero-grid {
  position:absolute; inset:0;
  background-image:linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content { position:relative; z-index:2; text-align:center; max-width:800px; margin:0 auto; }
.hero h1 { font-size:3.2rem; font-weight:800; line-height:1.1; margin-bottom:1.5rem; }
.hero h1 .highlight {
  background:linear-gradient(135deg, var(--accent-light), var(--gradient-end));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.hero p { font-size:1.15rem; color:var(--text-secondary); margin-bottom:2.5rem; max-width:640px; margin-left:auto; margin-right:auto; }
.btn {
  display:inline-flex; align-items:center; gap:.5rem;
  padding:.85rem 1.8rem; border-radius:.6rem; font-weight:600; font-size:.95rem;
  transition:all .2s; border:1px solid transparent; cursor:pointer;
}
.btn-primary { background:var(--accent); color:#fff; box-shadow:0 4px 20px rgba(99,102,241,0.3); }
.btn-primary:hover { background:var(--accent-dark); transform:translateY(-2px); }
.btn-outline { background:transparent; border-color:var(--border); color:var(--text-primary); }
.btn-outline:hover { border-color:var(--accent); color:var(--accent-light); }

/* Section */
.section { padding:100px 0; position:relative; }
.section-header { text-align:center; margin-bottom:4rem; }
.section-header h2 { font-size:2.2rem; font-weight:700; margin-bottom:.75rem; }
.section-header p { color:var(--text-secondary); font-size:1.05rem; max-width:600px; margin:0 auto; }
.section-label {
  display:inline-block; padding:.35rem .9rem; border-radius:2rem;
  background:rgba(99,102,241,0.1); color:var(--accent-light); font-size:.8rem; font-weight:600;
  margin-bottom:1rem; border:1px solid rgba(99,102,241,0.15);
}

/* Cards */
.card-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(280px,1fr)); gap:1.5rem; }
.card {
  background:var(--bg-card); border:1px solid var(--border); border-radius:1rem;
  padding:2rem; transition:all .3s; position:relative; overflow:hidden;
}
.card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--accent), transparent); opacity:0; transition:opacity .3s;
}
.card:hover { transform:translateY(-4px); border-color:rgba(99,102,241,0.2); }
.card:hover::before { opacity:1; }
.card-icon {
  width:48px; height:48px; border-radius:12px; background:rgba(99,102,241,0.1);
  display:flex; align-items:center; justify-content:center; margin-bottom:1.25rem;
  color:var(--accent-light); font-size:1.25rem;
}
.card h3 { font-size:1.15rem; margin-bottom:.5rem; }
.card p { color:var(--text-secondary); font-size:.9rem; }

/* Features / Stats */
.stats-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px,1fr)); gap:1.5rem; margin-top:3rem; }
.stat {
  background:var(--bg-card); border:1px solid var(--border); border-radius:1rem;
  padding:2rem; text-align:center;
}
.stat-number { font-size:2.5rem; font-weight:800; background:linear-gradient(135deg, var(--accent), var(--gradient-end)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { color:var(--text-secondary); font-size:.9rem; margin-top:.5rem; }

/* Industries */
.industry-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(220px,1fr)); gap:1rem; }
.industry-item {
  background:var(--bg-card); border:1px solid var(--border); border-radius:.75rem;
  padding:1.25rem; display:flex; align-items:center; gap:.75rem; transition:all .2s;
}
.industry-item:hover { border-color:rgba(99,102,241,0.25); transform:translateX(4px); }
.industry-dot { width:8px; height:8px; border-radius:50%; background:var(--accent); flex-shrink:0; }
.industry-item span { font-size:.9rem; color:var(--text-secondary); }

/* Team */
.team-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(240px,1fr)); gap:1.5rem; }
.team-card {
  background:var(--bg-card); border:1px solid var(--border); border-radius:1rem;
  padding:2rem; text-align:center; transition:all .3s;
}
.team-card:hover { transform:translateY(-4px); border-color:rgba(99,102,241,0.2); }
.team-avatar {
  width:80px; height:80px; border-radius:50%; margin:0 auto 1rem;
  background:linear-gradient(135deg, var(--accent), var(--gradient-end));
  display:flex; align-items:center; justify-content:center; font-size:1.5rem; color:#fff; font-weight:700;
}
.team-role { color:var(--accent-light); font-size:.85rem; font-weight:600; margin-bottom:.25rem; }
.team-desc { color:var(--text-secondary); font-size:.85rem; }

/* Contact */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:3rem; align-items:start; }
.contact-info h3 { font-size:1.5rem; margin-bottom:1.5rem; }
.contact-item { display:flex; gap:1rem; margin-bottom:1.5rem; }
.contact-item i { width:40px; height:40px; border-radius:10px; background:rgba(99,102,241,0.1); color:var(--accent-light); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.contact-item strong { display:block; margin-bottom:.25rem; }
.contact-item span { color:var(--text-secondary); font-size:.9rem; }
.contact-form {
  background:var(--bg-card); border:1px solid var(--border); border-radius:1rem; padding:2rem;
}
.form-group { margin-bottom:1.25rem; }
.form-group label { display:block; font-size:.85rem; margin-bottom:.5rem; color:var(--text-secondary); }
.form-group input, .form-group textarea {
  width:100%; padding:.85rem 1rem; background:var(--bg-primary); border:1px solid var(--border);
  border-radius:.5rem; color:var(--text-primary); font-size:.9rem; transition:border .2s;
}
.form-group input:focus, .form-group textarea:focus { outline:none; border-color:var(--accent); }
.form-group textarea { min-height:120px; resize:vertical; }

/* Legal pages */
.legal-content { max-width:900px; margin:0 auto; }
.legal-content h1 { font-size:2rem; margin-bottom:1rem; }
.legal-content .last-updated { color:var(--text-muted); font-size:.85rem; margin-bottom:3rem; }
.legal-content h2 { font-size:1.25rem; margin:2.5rem 0 1rem; color:var(--text-primary); }
.legal-content p, .legal-content li { color:var(--text-secondary); margin-bottom:.75rem; }
.legal-content ul { list-style:disc; padding-left:1.5rem; margin-bottom:1rem; }
.legal-content a { color:var(--accent-light); }

/* Footer */
.footer {
  background:var(--bg-secondary); border-top:1px solid var(--border); padding:60px 0 30px;
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:3rem; margin-bottom:3rem; }
.footer-brand p { color:var(--text-secondary); font-size:.9rem; margin-top:1rem; }
.footer h4 { font-size:.9rem; text-transform:uppercase; letter-spacing:.05em; margin-bottom:1.25rem; color:var(--text-primary); }
.footer-links li { margin-bottom:.6rem; }
.footer-links a { color:var(--text-secondary); font-size:.9rem; transition:color .2s; }
.footer-links a:hover { color:var(--text-primary); }
.footer-bottom {
  border-top:1px solid var(--border); padding-top:1.5rem;
  display:flex; justify-content:space-between; align-items:center;
  color:var(--text-muted); font-size:.8rem;
}

/* Animations */
.reveal { opacity:0; }
@keyframes fadeUp {
  from { opacity:0; transform:translateY(30px); }
  to { opacity:1; transform:translateY(0); }
}
.animate { animation:fadeUp .8s ease forwards; }
.delay-1 { animation-delay:.1s; }
.delay-2 { animation-delay:.2s; }
.delay-3 { animation-delay:.3s; }

/* Responsive */
@media (max-width: 900px) {
  .contact-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .hero h1 { font-size:2.4rem; }
}
@media (max-width: 640px) {
  .nav { display:none; position:absolute; top:72px; left:0; right:0; background:var(--bg-secondary); flex-direction:column; padding:1.5rem; border-bottom:1px solid var(--border); }
  .nav.open { display:flex; }
  .mobile-toggle { display:flex; }
  .footer-grid { grid-template-columns:1fr; gap:2rem; }
  .footer-bottom { flex-direction:column; gap:.5rem; text-align:center; }
  .hero h1 { font-size:2rem; }
  .section { padding:60px 0; }
}