/* ===== CSS Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:#0a0f1a;color:#e2e8f0;line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* ===== Color Variables ===== */
:root{
  --bg-primary:#0a0f1a;
  --bg-secondary:#111827;
  --bg-card:#1a2236;
  --u-blue:#2563eb;
  --u-blue-light:#3b82f6;
  --u-blue-dark:#1d4ed8;
  --crypto-gold:#f59e0b;
  --crypto-gold-light:#fbbf24;
  --universal-green:#10b981;
  --universal-green-light:#34d399;
  --tech-purple:#7c3aed;
  --tech-purple-light:#a78bfa;
  --text-primary:#f8fafc;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --border-color:#1e293b;
  --shadow:0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg:0 10px 40px rgba(0,0,0,0.5);
  --radius:12px;
  --radius-sm:8px;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== Typography ===== */
h1,h2,h3,h4{color:var(--text-primary);line-height:1.3;font-weight:700}
h1{font-size:clamp(2rem,5vw,3rem)}
h2{font-size:clamp(1.5rem,4vw,2.25rem)}
h3{font-size:clamp(1.15rem,3vw,1.5rem)}
p{color:var(--text-secondary);margin-bottom:1rem}
.text-gradient{background:linear-gradient(135deg,var(--u-blue),var(--tech-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.text-gold{color:var(--crypto-gold)}
.text-green{color:var(--universal-green)}
.text-purple{color:var(--tech-purple-light)}

/* ===== Header & Navigation ===== */
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,15,26,0.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);transition:var(--transition)}
header .container{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px}
.logo{font-size:1.5rem;font-weight:800;display:flex;align-items:center;gap:8px}
.logo .icon{width:36px;height:36px;background:linear-gradient(135deg,var(--u-blue),var(--tech-purple));border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:#fff}
nav ul{display:flex;gap:2rem;align-items:center}
nav a{font-weight:500;font-size:0.95rem;color:var(--text-secondary);transition:var(--transition);position:relative;padding:4px 0}
nav a:hover,nav a.active{color:var(--text-primary)}
nav a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--u-blue),var(--tech-purple));transition:var(--transition)}
nav a:hover::after,nav a.active::after{width:100%}
.menu-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer}

/* ===== Buttons ===== */
.btn{padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:0.95rem;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:8px;border:none;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--u-blue),var(--u-blue-dark));color:#fff;box-shadow:0 4px 16px rgba(37,99,235,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(37,99,235,0.5)}
.btn-gold{background:linear-gradient(135deg,var(--crypto-gold),#d97706);color:#0a0f1a;box-shadow:0 4px 16px rgba(245,158,11,0.35)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(245,158,11,0.5)}
.btn-green{background:linear-gradient(135deg,var(--universal-green),#059669);color:#fff;box-shadow:0 4px 16px rgba(16,185,129,0.35)}
.btn-green:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(16,185,129,0.5)}
.btn-outline{border:2px solid var(--u-blue);color:var(--u-blue-light);background:transparent}
.btn-outline:hover{background:var(--u-blue);color:#fff}
.btn-lg{padding:16px 36px;font-size:1.1rem;border-radius:var(--radius)}

/* ===== CTA Pulse Animation ===== */
@keyframes pulse-cta{0%,100%{box-shadow:0 0 0 0 rgba(37,99,235,0.5)}50%{box-shadow:0 0 0 16px rgba(37,99,235,0)}}
.btn-pulse{animation:pulse-cta 2s infinite}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes scan-line{0%{top:0}100%{top:100%}}
@keyframes spin-slow{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes device-slide{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

.fade-in{animation:fadeIn 0.8s ease forwards}
.fade-in-up{animation:fadeInUp 0.8s ease forwards}
.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.8s ease,transform 0.8s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== Hero Section ===== */
.hero{min-height:100vh;display:flex;align-items:center;padding:120px 0 80px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(37,99,235,0.15),transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-30%;left:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(124,58,237,0.12),transparent 70%);border-radius:50%}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content h1{margin-bottom:1.2rem;line-height:1.2}
.hero-content p{font-size:1.15rem;margin-bottom:2rem;color:var(--text-secondary);max-width:540px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-image{position:relative}
.hero-image img{border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.hero-image .floating-badge{position:absolute;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:12px 18px;font-weight:600;font-size:0.85rem;box-shadow:var(--shadow);animation:float 3s ease-in-out infinite}
.hero-image .badge-1{top:10%;left:-30px;color:var(--u-blue-light)}
.hero-image .badge-2{bottom:15%;right:-20px;color:var(--crypto-gold);animation-delay:1s}
.hero-image .badge-3{top:40%;right:-40px;color:var(--universal-green);animation-delay:0.5s}

/* ===== Device Showcase ===== */
.device-showcase{padding:80px 0;background:var(--bg-secondary)}
.device-showcase h2{text-align:center;margin-bottom:16px}
.device-showcase .subtitle{text-align:center;color:var(--text-muted);margin-bottom:48px}
.device-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:24px}
.device-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:28px 20px;text-align:center;transition:var(--transition)}
.device-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--u-blue)}
.device-card .device-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem}
.device-card .icon-android{background:linear-gradient(135deg,var(--universal-green),#059669);color:#fff}
.device-card .icon-ios{background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff}
.device-card .icon-windows{background:linear-gradient(135deg,var(--u-blue),#1d4ed8);color:#fff}
.device-card .icon-mac{background:linear-gradient(135deg,#64748b,#475569);color:#fff}
.device-card .icon-web{background:linear-gradient(135deg,var(--tech-purple),#6d28d9);color:#fff}
.device-card .icon-tablet{background:linear-gradient(135deg,var(--crypto-gold),#d97706);color:#0a0f1a}
.device-card h3{font-size:1rem;margin-bottom:4px}
.device-card span{font-size:0.8rem;color:var(--text-muted)}

/* ===== Features Section ===== */
.features{padding:80px 0}
.features h2{text-align:center;margin-bottom:16px}
.features .subtitle{text-align:center;color:var(--text-muted);margin-bottom:48px}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--u-blue),var(--tech-purple));opacity:0;transition:var(--transition)}
.feature-card:hover::before{opacity:1}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--u-blue-dark)}
.feature-card .feature-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:20px}
.feature-card .fi-blue{background:rgba(37,99,235,0.15);color:var(--u-blue-light)}
.feature-card .fi-gold{background:rgba(245,158,11,0.15);color:var(--crypto-gold)}
.feature-card .fi-green{background:rgba(16,185,129,0.15);color:var(--universal-green)}
.feature-card .fi-purple{background:rgba(124,58,237,0.15);color:var(--tech-purple-light)}
.feature-card h3{margin-bottom:10px}
.feature-card p{color:var(--text-muted);font-size:0.95rem;margin-bottom:0}

/* ===== Stats Section ===== */
.stats{padding:80px 0;background:linear-gradient(135deg,var(--bg-secondary),#0f172a)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:36px 20px;transition:var(--transition)}
.stat-item:hover{border-color:var(--u-blue);transform:translateY(-4px)}
.stat-number{font-size:2.5rem;font-weight:800;margin-bottom:6px}
.stat-label{color:var(--text-muted);font-size:0.9rem}

/* ===== CTA Section ===== */
.cta-section{padding:80px 0;text-align:center;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:500px;height:500px;background:radial-gradient(circle,rgba(37,99,235,0.2),transparent 70%);border-radius:50%}
.cta-section .container{position:relative;z-index:1}
.cta-section h2{margin-bottom:16px}
.cta-section p{margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}

/* ===== About Page ===== */
.page-header{padding:140px 0 60px;text-align:center;position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:400px;height:400px;background:radial-gradient(circle,rgba(37,99,235,0.12),transparent 70%);border-radius:50%}
.page-header h1{margin-bottom:12px}
.page-header p{color:var(--text-muted);max-width:600px;margin:0 auto}

.about-content{padding:40px 0 80px}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:60px}
.about-grid.reverse{direction:rtl}
.about-grid.reverse>*{direction:ltr}
.about-grid img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-text h2{margin-bottom:16px}
.about-text p{margin-bottom:12px}

.timeline{padding:40px 0}
.timeline h2{text-align:center;margin-bottom:48px}
.timeline-list{position:relative;max-width:800px;margin:0 auto}
.timeline-list::before{content:'';position:absolute;left:50%;transform:translateX(-50%);width:2px;height:100%;background:linear-gradient(180deg,var(--u-blue),var(--tech-purple),var(--crypto-gold))}
.timeline-item{position:relative;width:50%;padding:20px 40px}
.timeline-item:nth-child(odd){left:0;text-align:right}
.timeline-item:nth-child(even){left:50%}
.timeline-item::before{content:'';position:absolute;top:28px;width:14px;height:14px;background:var(--u-blue);border-radius:50%;border:3px solid var(--bg-primary);z-index:1}
.timeline-item:nth-child(odd)::before{right:-7px}
.timeline-item:nth-child(even)::before{left:-7px}
.timeline-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:20px}
.timeline-content .year{font-weight:700;color:var(--u-blue-light);margin-bottom:4px}
.timeline-content h3{margin-bottom:6px;font-size:1.05rem}
.timeline-content p{font-size:0.9rem;margin-bottom:0;color:var(--text-muted)}

.team-section{padding:40px 0 80px}
.team-section h2{text-align:center;margin-bottom:48px}
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.team-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--transition)}
.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--u-blue)}
.team-card img{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;object-fit:cover;border:3px solid var(--u-blue)}
.team-card h3{margin-bottom:4px}
.team-card .role{color:var(--u-blue-light);font-size:0.85rem;margin-bottom:8px}
.team-card p{font-size:0.85rem;color:var(--text-muted);margin-bottom:0}

.security-section{padding:60px 0}
.security-section h2{text-align:center;margin-bottom:48px}
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.security-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:28px;transition:var(--transition)}
.security-card:hover{border-color:var(--universal-green)}
.security-card h3{margin-bottom:10px}

/* ===== Services Page ===== */
.services-content{padding:40px 0 80px}
.service-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px;margin-bottom:60px}
.service-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:36px 28px;transition:var(--transition)}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.service-card .service-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px}
.service-card h3{margin-bottom:10px}
.service-card p{color:var(--text-muted);font-size:0.95rem;margin-bottom:16px}
.service-card ul li{padding:6px 0;color:var(--text-secondary);font-size:0.9rem;position:relative;padding-left:20px}
.service-card ul li::before{content:'✓';position:absolute;left:0;color:var(--universal-green);font-weight:700}
.service-table{overflow-x:auto;margin-bottom:60px}
.service-table table{width:100%;border-collapse:collapse}
.service-table th,.service-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border-color)}
.service-table th{background:var(--bg-card);color:var(--u-blue-light);font-weight:600}
.service-table tr:hover td{background:rgba(37,99,235,0.05)}
.service-table .check{color:var(--universal-green);font-weight:700}

/* ===== FAQ Page ===== */
.faq-content{padding:40px 0 80px}
.faq-search{margin-bottom:40px;text-align:center}
.faq-search input{width:100%;max-width:500px;padding:14px 20px;border-radius:var(--radius);border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-primary);font-size:1rem;outline:none;transition:var(--transition)}
.faq-search input:focus{border-color:var(--u-blue);box-shadow:0 0 0 3px rgba(37,99,235,0.15)}
.faq-categories{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.faq-cat-btn{padding:8px 20px;border-radius:20px;background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;transition:var(--transition);font-size:0.9rem}
.faq-cat-btn:hover,.faq-cat-btn.active{background:var(--u-blue);color:#fff;border-color:var(--u-blue)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{margin-bottom:12px;border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;background:var(--bg-card);transition:var(--transition)}
.faq-item:hover{border-color:var(--u-blue-dark)}
.faq-item summary{padding:18px 24px;cursor:pointer;font-weight:600;font-size:1.05rem;color:var(--text-primary);position:relative;padding-right:48px;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.3rem;color:var(--u-blue-light);transition:var(--transition)}
.faq-item[open] summary::after{content:'−'}
.faq-item .faq-answer{padding:0 24px 20px;color:var(--text-secondary);font-size:0.95rem;line-height:1.8}

/* ===== Contact Page ===== */
.contact-content{padding:40px 0 80px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-form h2{margin-bottom:24px}
.form-group{margin-bottom:20px}
.form-group label{display:block;margin-bottom:6px;color:var(--text-secondary);font-weight:500;font-size:0.9rem}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-color);background:var(--bg-card);color:var(--text-primary);font-size:0.95rem;outline:none;transition:var(--transition);font-family:inherit}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--u-blue);box-shadow:0 0 0 3px rgba(37,99,235,0.15)}
.form-group textarea{resize:vertical;min-height:120px}
.contact-info h2{margin-bottom:24px}
.contact-method{padding:20px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);margin-bottom:16px;transition:var(--transition)}
.contact-method:hover{border-color:var(--u-blue)}
.contact-method h3{margin-bottom:6px;font-size:1.05rem}
.contact-method p{font-size:0.9rem;margin-bottom:0}
.social-links{display:flex;gap:12px;margin-top:24px}
.social-link{width:44px;height:44px;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;transition:var(--transition);font-size:1.2rem;color:var(--text-secondary)}
.social-link:hover{background:var(--u-blue);color:#fff;border-color:var(--u-blue);transform:translateY(-2px)}

/* ===== Footer ===== */
footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);padding:40px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand p{margin-top:12px;color:var(--text-muted);font-size:0.9rem}
.footer-links h3{margin-bottom:16px;font-size:1rem}
.footer-links ul li{margin-bottom:8px}
.footer-links ul li a{color:var(--text-muted);font-size:0.9rem;transition:var(--transition)}
.footer-links ul li a:hover{color:var(--u-blue-light)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border-color);color:var(--text-muted);font-size:0.85rem}

/* ===== Responsive Design ===== */
@media(max-width:1024px){
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content p{margin-left:auto;margin-right:auto}
  .hero-btns{justify-content:center}
  .hero-image{max-width:500px;margin:0 auto}
  .about-grid{grid-template-columns:1fr}
  .about-grid img{max-width:400px;margin:0 auto}
  .contact-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .timeline-item{width:100%;left:0!important;text-align:left!important;padding-left:48px}
  .timeline-item::before{left:11px!important;right:auto!important}
  .timeline-list::before{left:18px}
}

@media(max-width:768px){
  nav ul{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-secondary);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border-color)}
  nav ul.active{display:flex}
  .menu-toggle{display:block}
  .hero{padding:100px 0 60px;min-height:auto}
  .hero-content h1{font-size:1.8rem}
  .stats-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .service-cards{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .device-grid{grid-template-columns:repeat(3,1fr)}
}

@media(max-width:480px){
  .hero-btns{flex-direction:column}
  .hero-btns .btn{width:100%;justify-content:center}
  .stats-grid{grid-template-columns:1fr}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .btn-lg{padding:14px 24px;font-size:1rem}
}