/* ============================================
   欧义交易所 - 全局样式
   配色：深色背景(#0a0e1a) + 蓝紫渐变(#4a6cf7→#8b5cf6) + 安全绿(#10b981) + 白色
   ============================================ */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #1f2a3a;
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #6b7280;
  --accent-blue: #4a6cf7;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-green-light: #34d399;
  --gradient-primary: linear-gradient(135deg, #4a6cf7, #8b5cf6);
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #1a1f2e 50%, #0f1635 100%);
  --gradient-card: linear-gradient(135deg, rgba(74,108,247,0.1), rgba(139,92,246,0.1));
  --border-color: #1e293b;
  --border-light: #334155;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(74,108,247,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --max-width: 1200px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}

h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:800;line-height:1.2}
h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;line-height:1.3}
h3{font-size:clamp(1.1rem,2vw,1.4rem);font-weight:600;line-height:1.4}
p{color:var(--text-secondary);margin-bottom:1rem}
a{color:var(--accent-blue);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--accent-purple)}

.text-gradient{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}
.section-padding{padding:5rem 0}
.section-header{text-align:center;margin-bottom:3rem}
.section-header h2{margin-bottom:0.75rem}
.section-header p{font-size:1.1rem;max-width:600px;margin:0 auto}

header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,14,26,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);transition:var(--transition)}
header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-size:1.5rem;font-weight:800;color:var(--text-primary);display:flex;align-items:center;gap:0.5rem}
.logo .logo-icon{width:36px;height:36px;background:var(--gradient-primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700}
nav{display:flex;align-items:center;gap:2rem}
nav a{color:var(--text-secondary);font-size:0.95rem;font-weight:500;transition:var(--transition);position:relative}
nav a:hover,nav a.active{color:var(--text-primary)}
nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gradient-primary);transition:var(--transition)}
nav a:hover::after,nav a.active::after{width:100%}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{display:block;width:26px;height:2px;background:var(--text-primary);transition:var(--transition)}

#hero{min-height:100vh;display:flex;align-items:center;background:var(--gradient-hero);position:relative;overflow:hidden;padding-top:70px}
#hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 50%,rgba(74,108,247,0.08) 0%,transparent 60%),radial-gradient(ellipse at 70% 30%,rgba(139,92,246,0.06) 0%,transparent 60%)}
#hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero-content h1{margin-bottom:1.25rem}
.hero-content h1 span{display:block}
.hero-content .hero-desc{font-size:1.15rem;color:var(--text-secondary);margin-bottom:2rem;max-width:500px}
.hero-buttons{display:flex;gap:1rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:0.5rem;padding:0.75rem 1.75rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);border:none;text-decoration:none}
.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 15px rgba(74,108,247,0.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(74,108,247,0.5);color:#fff}
.btn-outline{background:transparent;color:var(--text-primary);border:2px solid var(--border-light)}
.btn-outline:hover{border-color:var(--accent-blue);background:rgba(74,108,247,0.1);transform:translateY(-2px)}
.btn-green{background:var(--accent-green);color:#fff;box-shadow:0 4px 15px rgba(16,185,129,0.4)}
.btn-green:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(16,185,129,0.5);color:#fff}
.hero-image{display:flex;justify-content:center;align-items:center}
.hero-image img{max-width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}

#features{background:var(--bg-secondary)}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:1.5rem}
.feature-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient-primary);opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow);border-color:var(--accent-blue)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:var(--radius-sm);background:var(--gradient-card);display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem;font-size:1.5rem}
.feature-card h3{margin-bottom:0.75rem}
.feature-card p{font-size:0.95rem;margin-bottom:0}

#stats{background:var(--gradient-primary);padding:3rem 0}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;text-align:center}
.stat-item .stat-number{font-size:2.5rem;font-weight:800;color:#fff}
.stat-item .stat-label{color:rgba(255,255,255,0.8);font-size:0.95rem}

#security{background:var(--bg-primary)}
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}
.security-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem;text-align:center;transition:var(--transition)}
.security-item:hover{border-color:var(--accent-green);box-shadow:0 0 20px rgba(16,185,129,0.15)}
.security-item .icon{font-size:2.5rem;margin-bottom:1rem}
.security-item h3{color:var(--accent-green-light);margin-bottom:0.75rem}

.services-list{display:flex;flex-direction:column;gap:2rem}
.service-block{display:grid;grid-template-columns:auto 1fr;gap:1.5rem;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem;transition:var(--transition)}
.service-block:hover{border-color:var(--accent-blue);box-shadow:var(--shadow-md);transform:translateX(4px)}
.service-block .service-num{font-size:2rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.service-block h3{margin-bottom:0.5rem}

#cta{background:var(--bg-secondary);text-align:center}
#cta .section-header{margin-bottom:2rem}
.cta-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

.timeline{position:relative;padding-left:2rem;border-left:2px solid var(--border-light)}
.timeline-item{position:relative;margin-bottom:2rem;padding-left:1.5rem}
.timeline-item::before{content:'';position:absolute;left:-2.5rem;top:0.5rem;width:14px;height:14px;background:var(--gradient-primary);border-radius:50%}
.timeline-item .year{font-weight:700;color:var(--accent-blue);margin-bottom:0.25rem}
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}
.team-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem;text-align:center;transition:var(--transition)}
.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.team-card img{width:80px;height:80px;border-radius:50%;object-fit:cover;margin-bottom:1rem;border:3px solid var(--accent-blue)}
.team-card .role{color:var(--accent-blue);font-size:0.9rem}
.compliance-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;text-align:center}
.compliance-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:1.25rem;font-weight:600;transition:var(--transition)}
.compliance-item:hover{border-color:var(--accent-green);color:var(--accent-green-light)}
.arch-diagram{display:flex;flex-direction:column;align-items:center;gap:1rem;padding:2rem 0}
.arch-layer{background:var(--bg-card);border:1px solid var(--accent-blue);border-radius:var(--radius-md);padding:1rem 3rem;width:100%;max-width:500px;text-align:center;font-weight:600;transition:var(--transition)}
.arch-layer:hover{box-shadow:0 0 15px rgba(74,108,247,0.2);transform:scale(1.02)}
.arch-arrow{font-size:1.5rem;color:var(--accent-blue)}

.faq-list{display:flex;flex-direction:column;gap:1rem}
.faq-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent-blue)}
.faq-item summary{padding:1.25rem 1.5rem;cursor:pointer;font-weight:600;font-size:1.05rem;display:flex;justify-content:space-between;align-items:center;list-style:none;user-select:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:1.5rem;color:var(--accent-blue);transition:var(--transition)}
.faq-item[open] summary::after{content:'\2212'}
.faq-item .faq-answer{padding:0 1.5rem 1.25rem;color:var(--text-secondary);line-height:1.7}
.faq-categories{display:flex;gap:0.75rem;flex-wrap:wrap;margin-bottom:2rem;justify-content:center}
.faq-cat-btn{padding:0.5rem 1.25rem;border-radius:20px;border:1px solid var(--border-light);background:transparent;color:var(--text-secondary);cursor:pointer;font-size:0.9rem;transition:var(--transition)}
.faq-cat-btn:hover,.faq-cat-btn.active{border-color:var(--accent-blue);color:var(--text-primary);background:rgba(74,108,247,0.1)}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem}
.contact-methods{display:flex;flex-direction:column;gap:1.5rem}
.contact-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:1.5rem;display:flex;gap:1rem;align-items:flex-start;transition:var(--transition)}
.contact-card:hover{border-color:var(--accent-blue)}
.contact-card .contact-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--gradient-card);display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}
.contact-form{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:2rem}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;margin-bottom:0.5rem;font-weight:500;color:var(--text-secondary);font-size:0.9rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:0.75rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-primary);font-size:0.95rem;transition:var(--transition);font-family:inherit}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px rgba(74,108,247,0.1)}
.form-group textarea{resize:vertical;min-height:120px}

footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:3rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;margin-bottom:2rem}
.footer-col h4{color:var(--text-primary);margin-bottom:1rem;font-size:1rem}
.footer-col a{display:block;color:var(--text-muted);font-size:0.9rem;margin-bottom:0.5rem;transition:var(--transition)}
.footer-col a:hover{color:var(--text-primary)}
.footer-bottom{padding-top:1.5rem;border-top:1px solid var(--border-color);text-align:center;color:var(--text-muted);font-size:0.85rem}

@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeInLeft{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:translateX(0)}}
@keyframes fadeInRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(74,108,247,0.4)}50%{box-shadow:0 0 0 15px rgba(74,108,247,0)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}

.reveal{opacity:0;transform:translateY(30px);transition:all 0.6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.fade-in-up{animation:fadeInUp 0.6s ease forwards}
.fade-in-left{animation:fadeInLeft 0.6s ease forwards}
.fade-in-right{animation:fadeInRight 0.6s ease forwards}
.delay-1{animation-delay:0.15s}
.delay-2{animation-delay:0.3s}
.delay-3{animation-delay:0.45s}
.delay-4{animation-delay:0.6s}
.glow-hover{transition:var(--transition)}
.glow-hover:hover{box-shadow:0 0 25px rgba(74,108,247,0.25)}

.page-banner{padding:8rem 0 3rem;text-align:center;background:var(--gradient-hero)}
.page-banner h1{margin-bottom:0.75rem}
.breadcrumb{padding:1rem 0;font-size:0.9rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-secondary)}
.breadcrumb span{color:var(--text-primary)}

.back-to-top{position:fixed;bottom:2rem;right:2rem;z-index:99;width:44px;height:44px;background:var(--gradient-primary);color:#fff;border:none;border-radius:50%;cursor:pointer;font-size:1.2rem;opacity:0;transform:translateY(20px);transition:var(--transition);box-shadow:var(--shadow-md)}
.back-to-top.visible{opacity:1;transform:translateY(0)}
.back-to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-glow)}

@media (max-width: 1024px){
  #hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content .hero-desc{margin:0 auto 2rem}
  .hero-buttons{justify-content:center}
  .hero-image{order:-1}
  .hero-image img{max-width:350px}
}
@media (max-width: 768px){
  .hamburger{display:flex}
  nav{position:fixed;top:70px;left:0;right:0;bottom:0;background:var(--bg-primary);flex-direction:column;justify-content:flex-start;padding:2rem;gap:1.5rem;transform:translateX(100%);transition:var(--transition)}
  nav.open{transform:translateX(0)}
  nav a{font-size:1.1rem}
  .features-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .service-block{grid-template-columns:1fr}
  .service-block .service-num{text-align:center}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .section-padding{padding:3rem 0}
  .page-banner{padding:6rem 0 2rem}
}
@media (max-width: 480px){
  .stats-grid{grid-template-columns:1fr}
  .hero-buttons{flex-direction:column}
  .btn{width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr}
}