/* ==== Reset & Base ==== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;background:#0a0e17;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 24px}

/* ==== Colors ==== */
:root{
  --bg-dark:#0a0e17;
  --bg-card:#111827;
  --bg-card-hover:#1a2332;
  --blue:#3b82f6;
  --blue-light:#60a5fa;
  --gold:#f59e0b;
  --gold-light:#fbbf24;
  --green:#10b981;
  --green-light:#34d399;
  --white:#ffffff;
  --gray:#9ca3af;
  --border:rgba(59,130,246,0.15);
}

/* ==== Animations ==== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(59,130,246,0.4)}50%{box-shadow:0 0 0 15px rgba(59,130,246,0)}}
@keyframes glow{0%,100%{text-shadow:0 0 10px rgba(59,130,246,0.3),0 0 20px rgba(59,130,246,0.1)}50%{text-shadow:0 0 20px rgba(59,130,246,0.6),0 0 40px rgba(59,130,246,0.2)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ==== Header & Nav ==== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(10,14,23,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-size:1.5rem;font-weight:800;color:var(--white);letter-spacing:1px;display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--blue),var(--green));border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:bold;color:#fff}
.nav-links{display:flex;gap:32px}
.nav-links a{font-size:0.95rem;font-weight:500;color:var(--gray);transition:color 0.3s;position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--blue);transition:width 0.3s}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.btn-download-nav{padding:10px 24px;background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;border-radius:8px;font-weight:600;font-size:0.9rem;transition:all 0.3s}
.btn-download-nav:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(59,130,246,0.35)}
.mobile-toggle{display:none;font-size:1.6rem;color:var(--white);background:none;border:none;cursor:pointer}

/* ==== Hero ==== */
.hero{position:relative;padding:100px 0 80px;overflow:hidden;background:radial-gradient(ellipse at 30% 50%,rgba(59,130,246,0.12) 0%,transparent 60%),radial-gradient(ellipse at 70% 50%,rgba(16,185,129,0.08) 0%,transparent 60%)}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cdefs%3E%3Cpattern id='grid' width='60' height='60' patternUnits='userSpaceOnUse'%3E%3Cpath d='M60 0L0 0 0 60' fill='none' stroke='rgba(59,130,246,0.05)' stroke-width='0.5'/%3E%3C/pattern%3E%3C/defs%3E%3Crect width='60' height='60' fill='url(%23grid)'/%3E%3C/svg%3E");opacity:0.5;pointer-events:none}
.hero .container{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-content h1{font-size:2.8rem;font-weight:800;line-height:1.25;margin-bottom:20px;background:linear-gradient(135deg,var(--white),var(--blue-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-content h1 span{color:var(--gold);-webkit-text-fill-color:var(--gold)}
.hero-content p{font-size:1.1rem;color:var(--gray);margin-bottom:32px;max-width:500px}
.hero-tags{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.hero-tags span{padding:6px 16px;border:1px solid var(--border);border-radius:20px;font-size:0.85rem;color:var(--blue-light);background:rgba(59,130,246,0.08)}
.btn-primary{padding:16px 48px;background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;gap:10px;transition:all 0.3s;animation:pulse 2s infinite}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 35px rgba(59,130,246,0.4)}
.hero-image{display:flex;justify-content:center;animation:float 6s ease-in-out infinite}
.hero-image img{border-radius:20px;box-shadow:0 20px 60px rgba(59,130,246,0.2);max-width:450px}

/* ==== Stats ==== */
.stats-section{padding:60px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-section .container{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item h3{font-size:2.2rem;font-weight:800;color:var(--gold);margin-bottom:6px}
.stat-item p{font-size:0.9rem;color:var(--gray)}

/* ==== Features ==== */
.features-section{padding:100px 0}
.section-header{text-align:center;margin-bottom:64px}
.section-header h2{font-size:2.2rem;font-weight:800;color:var(--white);margin-bottom:12px}
.section-header p{font-size:1.05rem;color:var(--gray);max-width:600px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;padding:40px 30px;transition:all 0.4s}
.feature-card:hover{background:var(--bg-card-hover);border-color:var(--blue);transform:translateY(-8px);box-shadow:0 16px 40px rgba(59,130,246,0.12)}
.feature-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:20px}
.feature-icon.blue{background:rgba(59,130,246,0.15);color:var(--blue)}
.feature-icon.green{background:rgba(16,185,129,0.15);color:var(--green)}
.feature-icon.gold{background:rgba(245,158,11,0.15);color:var(--gold)}
.feature-card h3{font-size:1.2rem;font-weight:700;color:var(--white);margin-bottom:10px}
.feature-card p{font-size:0.92rem;color:var(--gray);line-height:1.7}

/* ==== CTA ==== */
.cta-section{padding:80px 0;text-align:center;background:linear-gradient(180deg,transparent,rgba(59,130,246,0.05),transparent)}
.cta-section h2{font-size:2rem;font-weight:800;color:var(--white);margin-bottom:16px}
.cta-section p{font-size:1.05rem;color:var(--gray);margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ==== Content Sections ==== */
.content-section{padding:100px 0}
.content-section.alt{background:rgba(17,24,39,0.5)}
.content-section h2{font-size:2rem;font-weight:800;color:var(--white);margin-bottom:20px}
.content-section p{font-size:1rem;color:var(--gray);margin-bottom:16px;max-width:800px}

/* Timeline */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--blue),var(--green))}
.timeline-item{position:relative;margin-bottom:40px}
.timeline-item::before{content:'';position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--blue);border:3px solid var(--bg-dark);box-shadow:0 0 0 3px rgba(59,130,246,0.3)}
.timeline-item h4{color:var(--blue-light);font-size:0.9rem;margin-bottom:4px}
.timeline-item h3{color:var(--white);font-size:1.15rem;margin-bottom:4px}
.timeline-item p{font-size:0.9rem;color:var(--gray)}

/* Security Grid */
.security-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}
.security-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:30px;text-align:center;transition:all 0.3s}
.security-card:hover{border-color:var(--green);transform:translateY(-4px)}
.security-card .icon{font-size:2rem;margin-bottom:14px;color:var(--green)}
.security-card h3{font-size:1.1rem;color:var(--white);margin-bottom:8px}
.security-card p{font-size:0.88rem;color:var(--gray)}

/* Services Grid */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:32px;transition:all 0.4s}
.service-card:hover{background:var(--bg-card-hover);border-color:var(--blue);transform:translateY(-6px);box-shadow:0 12px 30px rgba(59,130,246,0.1)}
.service-card .icon{font-size:2.2rem;margin-bottom:16px}
.service-card h3{font-size:1.15rem;font-weight:700;color:var(--white);margin-bottom:10px}
.service-card p{font-size:0.9rem;color:var(--gray)}
.service-card .tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.service-card .tags span{padding:3px 10px;background:rgba(59,130,246,0.1);border-radius:4px;font-size:0.78rem;color:var(--blue-light)}
.service-table{width:100%;border-collapse:collapse;margin-top:50px}
.service-table th{background:var(--bg-card);color:var(--blue-light);padding:14px 18px;text-align:left;font-weight:600;font-size:0.9rem;border-bottom:2px solid var(--border)}
.service-table td{padding:14px 18px;border-bottom:1px solid var(--border);font-size:0.9rem}
.service-table tr:hover td{background:rgba(59,130,246,0.03)}
.service-table .check{color:var(--green);font-weight:bold;font-size:1.1rem}

/* FAQ */
.faq-categories{display:flex;gap:10px;margin-bottom:32px;flex-wrap:wrap}
.faq-cat{background:none;border:1px solid var(--border);color:var(--gray);padding:8px 20px;border-radius:8px;font-size:0.9rem;cursor:pointer;transition:all 0.3s}
.faq-cat:hover,.faq-cat.active{background:rgba(59,130,246,0.1);border-color:var(--blue);color:var(--blue-light)}
.faq-search{margin-bottom:24px}
.faq-search input{width:100%;padding:14px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;color:var(--white);font-size:1rem;outline:none;transition:border-color 0.3s}
.faq-search input:focus{border-color:var(--blue)}
.faq-list details{border:1px solid var(--border);border-radius:10px;margin-bottom:10px;background:var(--bg-card);transition:all 0.3s}
.faq-list details:hover{border-color:rgba(59,130,246,0.3)}
.faq-list summary{padding:18px 24px;font-weight:600;color:var(--white);cursor:pointer;font-size:0.98rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-list summary::after{content:'+';font-size:1.3rem;color:var(--blue-light);transition:transform 0.3s}
.faq-list details[open] summary::after{content:'−';transform:rotate(180deg)}
.faq-list .faq-answer{padding:0 24px 20px;font-size:0.92rem;color:var(--gray);line-height:1.8}
.faq-group-title{font-size:1.3rem;font-weight:700;color:var(--blue-light);margin:32px 0 16px;padding-bottom:8px;border-bottom:1px solid var(--border)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:30px}
.contact-form{display:flex;flex-direction:column;gap:18px}
.contact-form input,.contact-form select,.contact-form textarea{padding:14px 18px;background:var(--bg-card);border:1px solid var(--border);border-radius:10px;color:var(--white);font-size:0.95rem;outline:none;transition:border-color 0.3s;font-family:inherit}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:var(--blue)}
.contact-form textarea{resize:vertical;min-height:120px}
.contact-form button{align-self:flex-start;padding:14px 40px;background:linear-gradient(135deg,var(--blue),var(--green));color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all 0.3s}
.contact-form button:hover{transform:translateY(-2px);box-shadow:0 10px 25px rgba(59,130,246,0.3)}
.contact-info h3{font-size:1.3rem;color:var(--white);margin-bottom:12px}
.contact-info .info-item{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start}
.contact-info .info-icon{font-size:1.4rem;min-width:28px;text-align:center}
.contact-info .info-text strong{display:block;color:var(--white);margin-bottom:2px}
.contact-info .info-text span{color:var(--gray);font-size:0.9rem}
.social-links{display:flex;gap:12px;margin-top:20px}
.social-links a{width:44px;height:44px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--gray);transition:all 0.3s;font-size:1.1rem}
.social-links a:hover{border-color:var(--blue);color:var(--blue);background:rgba(59,130,246,0.08)}

/* Page Banner */
.page-banner{padding:70px 0 50px;text-align:center;background:radial-gradient(ellipse at center,rgba(59,130,246,0.1) 0%,transparent 70%)}
.page-banner h1{font-size:2.4rem;font-weight:800;color:var(--white);margin-bottom:12px}
.page-banner p{font-size:1.05rem;color:var(--gray);max-width:600px;margin:0 auto}

/* Team */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}
.team-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:24px;text-align:center;transition:all 0.3s}
.team-card:hover{transform:translateY(-6px);border-color:var(--blue);box-shadow:0 12px 30px rgba(59,130,246,0.1)}
.team-card img{border-radius:50%;width:90px;height:90px;margin:0 auto 16px;object-fit:cover}
.team-card h4{color:var(--white);font-size:1.05rem;margin-bottom:4px}
.team-card .role{color:var(--blue-light);font-size:0.85rem;margin-bottom:8px}
.team-card p{font-size:0.82rem;color:var(--gray)}

/* Footer */
.site-footer{background:rgba(10,14,23,0.8);border-top:1px solid var(--border);padding:24px 0;text-align:center;font-size:0.88rem;color:var(--gray)}

/* ==== Responsive ==== */
@media(max-width:900px){
  .hero .container{grid-template-columns:1fr;text-align:center}
  .hero-content p{margin:0 auto 32px}
  .hero-content h1{font-size:2rem}
  .hero-tags{justify-content:center}
  .features-grid{grid-template-columns:1fr}
  .services-grid{grid-template-columns:1fr}
  .security-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .stats-section .container{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:rgba(10,14,23,0.98);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
  .mobile-toggle{display:block}
}
@media(max-width:480px){
  .hero-content h1{font-size:1.6rem}
  .section-header h2{font-size:1.6rem}
  .features-grid,.services-grid,.security-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .stats-section .container{grid-template-columns:1fr}
  .cta-buttons{flex-direction:column;align-items:center}
}