:root{--primary:#0a66ff;--primary-dark:#0052cc;--secondary:#00c853;--accent:#ff6d00;--bg:#0a0a0f;--bg-light:#12121a;--card:#181824;--text:#fff;--text-muted:rgba(255,255,255,.6);--border:rgba(255,255,255,.1);--gradient:linear-gradient(135deg,#0a66ff 0%,#00c6ff 100%);--radius:12px;--shadow:0 8px 32px rgba(0,0,0,.3);--transition:.3s ease}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue','PingFang SC','Hiragino Sans GB','Microsoft YaHei','微软雅黑',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
body.no-scroll{overflow:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
a{text-decoration:none;color:inherit}

/* Accessibility */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-48px;left:8px;background:var(--primary);color:#fff;padding:10px 18px;border-radius:0 0 8px 8px;z-index:10000;font-size:.9rem;transition:top .2s}
.skip-link:focus{top:0;outline:2px solid #fff;outline-offset:2px}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}

/* Emoji font fallback for cross-platform consistency */
.emoji-icon{font-family:'Apple Color Emoji','Segoe UI Emoji','Noto Color Emoji','Segoe UI Symbol',sans-serif;font-style:normal;line-height:1}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:8px;font-weight:500;transition:var(--transition);border:none;cursor:pointer;min-height:44px}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 15px rgba(10,102,255,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(10,102,255,.5)}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn-outline:hover{background:rgba(255,255,255,.05);border-color:var(--primary)}
.btn-ghost{background:transparent;color:var(--text-muted)}
.btn-ghost:hover{color:var(--text)}
.btn-lg{padding:14px 32px;font-size:1.05rem;min-height:48px}
.btn-sm{padding:10px 16px;font-size:.9rem;min-height:40px}
.btn-block{width:100%}

/* Navigation */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,10,15,.7);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:background var(--transition),box-shadow var(--transition),border-color var(--transition)}
.navbar.scrolled{background:rgba(10,10,15,.95);box-shadow:0 4px 24px rgba(0,0,0,.35);border-bottom-color:rgba(255,255,255,.05)}
.nav-content{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-logo{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.25rem}
.logo-icon{width:40px;height:40px;background:var(--gradient);border-radius:10px;display:flex;align-items:center;justify-content:center}
.nav-links{display:flex;gap:32px}
.nav-links a{color:var(--text-muted);font-weight:500;transition:var(--transition)}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;gap:12px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:8px;width:44px;height:44px;border-radius:8px}
.nav-toggle:hover{background:rgba(255,255,255,.05)}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s ease,opacity .3s ease;transform-origin:center}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0;transform:scaleX(0)}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.menu-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:998;opacity:0;visibility:hidden;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);transition:opacity .3s ease,visibility .3s ease}
.menu-overlay.active{opacity:1;visibility:visible}

.mobile-menu{display:none;position:fixed;top:70px;left:0;right:0;background:var(--bg-light);padding:20px;flex-direction:column;gap:8px;z-index:999;border-bottom:1px solid var(--border);max-height:calc(100dvh - 70px);max-height:calc(100vh - 70px);overflow-y:auto;-webkit-overflow-scrolling:touch;transform:translateY(-100%);transition:transform .3s ease}
.mobile-menu.active{display:flex;transform:translateY(0)}
.mobile-menu a{padding:14px 12px;color:var(--text-muted);border-radius:8px;min-height:44px;display:flex;align-items:center}
.mobile-menu a:hover,.mobile-menu a:active{background:rgba(255,255,255,.04);color:var(--text)}
.mobile-menu .btn{margin-top:8px;justify-content:center}

/* Hero */
.hero{position:relative;min-height:100vh;min-height:100svh;min-height:100dvh;display:flex;flex-direction:column;justify-content:center;padding:120px 0 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-1}
.hero-gradient{position:absolute;inset:0;background:radial-gradient(ellipse 80% 50% at 50% -20%,rgba(10,102,255,.3),transparent)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:50px 50px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black,transparent);-webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,black,transparent)}
#heroCanvas{position:absolute;inset:0}
.hero-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(10,102,255,.15);border:1px solid rgba(10,102,255,.3);border-radius:50px;font-size:.85rem;color:#8ab4ff;margin-bottom:24px}
.badge-dot{width:8px;height:8px;background:#00ff88;border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.hero-text h1{font-size:3.5rem;line-height:1.1;font-weight:800;margin-bottom:24px}
.gradient-text{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.2rem;color:var(--text-muted);margin-bottom:32px;line-height:1.7}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px}
.hero-visual{position:relative}
.phone-mockup{position:relative;width:280px;margin:0 auto}
.phone-frame{position:relative;background:linear-gradient(145deg,#1a1a2e 0%,#0f0f1a 100%);border-radius:40px;padding:8px;box-shadow:0 25px 50px -12px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.1)}
.phone-notch{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:80px;height:20px;background:#1a1a2e;border-radius:0 0 12px 12px;z-index:2}
.phone-screen{background:#0a0a0f;border-radius:34px;overflow:hidden;aspect-ratio:9/19}
.screen-header{display:flex;justify-content:space-between;align-items:center;padding:10px 20px;background:rgba(255,255,255,.05);font-size:.7rem;color:var(--text-muted)}
.screen-body{padding:16px;display:flex;flex-direction:column;gap:10px}
.cp-card{display:flex;align-items:center;gap:12px;padding:14px;background:rgba(255,255,255,.05);border-radius:12px;border:1px solid rgba(255,255,255,.08);font-size:.85rem}
.cp-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.cp-dot.online{background:#00ff88;box-shadow:0 0 10px #00ff88}
.cp-dot.idle{background:#ffc107}
.cp-card b{font-size:.9rem}
.cp-card small{color:var(--text-muted)}
.phone-glow{position:absolute;inset:-20px;background:var(--gradient);filter:blur(60px);opacity:.2;z-index:-1;animation:glow 3s ease-in-out infinite alternate}
@keyframes glow{from{opacity:.15}to{opacity:.3}}

/* Stats */
.stats-bar{position:relative;z-index:1;background:rgba(255,255,255,.03);border-top:1px solid var(--border);border-bottom:1px solid var(--border);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);margin-top:auto}
.stats-grid{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;align-items:center;padding:30px 0}
.stat-item{text-align:center}
.stat-number{font-size:2rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}
.stat-divider{width:1px;height:40px;background:var(--border)}

/* Trust Bar */
.trust-bar{background:var(--bg-light);padding:40px 0;border-bottom:1px solid var(--border)}
.trust-label{text-align:center;color:var(--text-muted);margin-bottom:20px;font-size:.9rem}
.trust-tags{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.trust-tags span{padding:8px 16px;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:50px;font-size:.85rem;color:var(--text-muted)}

/* Download Center */
.download-center{background:var(--bg-light);position:relative}
.download-center::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 50% 0%,rgba(10,102,255,.08),transparent);pointer-events:none}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:1}
.download-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:var(--transition);display:flex;flex-direction:column;position:relative;overflow:hidden}
.download-card::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at top right,transparent,rgba(10,102,255,.05));opacity:0;transition:var(--transition)}
.download-card:hover{transform:translateY(-8px);border-color:rgba(10,102,255,.3);box-shadow:0 20px 40px rgba(10,102,255,.1)}
.download-card:hover::before{opacity:1}
.dl-icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.dl-icon svg{width:40px;height:40px}
.dl-icon.android{background:rgba(0,200,83,.1);color:#00c853}
.dl-icon.windows{background:rgba(0,150,255,.1);color:#0096ff}
.dl-icon.web{background:rgba(255,109,0,.1);color:var(--accent)}
.dl-info{flex:1;margin-bottom:24px}
.dl-info h3{font-size:1.2rem;margin-bottom:12px}
.dl-desc{font-size:.9rem;color:var(--text-muted);margin-bottom:16px;line-height:1.6}
.dl-meta{display:flex;gap:8px;flex-wrap:wrap}
.dl-meta span{font-size:.75rem;padding:4px 12px;border-radius:50px;background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--text-muted)}
.dl-meta .dl-version{background:rgba(10,102,255,.1);border-color:rgba(10,102,255,.3);color:#8ab4ff}
.dl-actions{position:relative;z-index:1}
.download-guide{margin-top:60px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;position:relative;z-index:1}
.guide-title{text-align:center;font-size:1.3rem;margin-bottom:32px}
.guide-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;list-style:none;padding:0}
.guide-step{display:flex;align-items:flex-start;gap:16px}
.step-num{width:40px;height:40px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;flex-shrink:0;box-shadow:0 4px 15px rgba(10,102,255,.3)}
.step-content h4{font-size:1rem;margin-bottom:6px}
.step-content p{font-size:.85rem;color:var(--text-muted);line-height:1.5}

/* Section Styles */
.section{padding:100px 0}
.section-header{text-align:center;max-width:700px;margin:0 auto 60px}
.section-tag{display:inline-block;padding:6px 16px;background:rgba(10,102,255,.1);border:1px solid rgba(10,102,255,.3);border-radius:50px;font-size:.8rem;color:#8ab4ff;margin-bottom:16px}
.section-title{font-size:2.5rem;font-weight:700;margin-bottom:16px}
.section-desc{color:var(--text-muted);font-size:1.1rem}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at top left,transparent,rgba(10,102,255,.05));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-5px);border-color:rgba(10,102,255,.3);box-shadow:0 20px 40px rgba(0,0,0,.3)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(10,102,255,.1);color:var(--primary);margin-bottom:20px}
.feature-icon svg{width:28px;height:28px}
.feature-card h3{font-size:1.15rem;margin-bottom:12px}
.feature-card p{color:var(--text-muted);font-size:.9rem;line-height:1.6}

/* Scenarios */
.scenarios{background:var(--bg-light)}
.scenarios-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.scenario-card:hover{transform:translateY(-5px);border-color:rgba(10,102,255,.3);box-shadow:var(--shadow)}
.scenario-icon{height:120px;display:flex;align-items:center;justify-content:center;font-size:3rem;background:linear-gradient(135deg,rgba(10,102,255,.1),rgba(0,200,83,.1))}
.scenario-content{padding:28px}
.scenario-content h3{font-size:1.2rem;margin-bottom:12px}
.scenario-content p{color:var(--text-muted);font-size:.9rem;margin-bottom:16px}
.scenario-content ul{list-style:none}
.scenario-content li{padding:6px 0;padding-left:20px;position:relative;font-size:.85rem;color:var(--text-muted)}
.scenario-content li::before{content:'✓';position:absolute;left:0;color:var(--secondary)}

/* Pricing */
.pricing-toggle{display:flex;justify-content:center;gap:8px;margin-bottom:40px;background:rgba(255,255,255,.05);padding:6px;border-radius:50px;width:fit-content;margin-left:auto;margin-right:auto}
.toggle-btn{padding:10px 24px;border-radius:50px;border:none;background:transparent;color:var(--text-muted);font-weight:500;cursor:pointer;transition:var(--transition);min-height:40px}
.toggle-btn.active{background:var(--gradient);color:#fff;box-shadow:0 4px 15px rgba(10,102,255,.3)}
.pricing-grid{display:none;grid-template-columns:repeat(3,1fr);gap:24px;max-width:1000px;margin:0 auto}
.pricing-grid.active{display:grid}
.price-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;position:relative;transition:var(--transition)}
.price-card .ribbon-wrap{position:absolute;top:0;right:0;width:110px;height:110px;overflow:hidden;border-top-right-radius:var(--radius);pointer-events:none;z-index:1}
.price-card.featured{border-color:var(--primary);box-shadow:0 0 30px rgba(10,102,255,.15)}
.price-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--gradient);padding:6px 16px;border-radius:50px;font-size:.75rem;font-weight:600}
.price-ribbon{position:absolute;top:22px;right:-40px;background:var(--secondary);color:#000;padding:5px 44px;font-size:.7rem;font-weight:700;transform:rotate(45deg);box-shadow:0 2px 8px rgba(0,0,0,.2);white-space:nowrap}
.price-header{margin-bottom:20px}
.price-header h3{font-size:1.1rem}
.price-header p{font-size:.85rem;color:var(--text-muted);margin-top:4px}
.price-value{display:flex;align-items:baseline;gap:4px;margin-bottom:8px}
.currency{font-size:1.5rem;color:var(--primary)}
.amount{font-size:3rem;font-weight:800}
.period{color:var(--text-muted)}
.price-note{font-size:.85rem;color:var(--secondary);margin-bottom:20px}
.price-features{list-style:none;margin-bottom:24px}
.price-features li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:.9rem;color:var(--text-muted)}
.price-features li::before{content:'✓';color:var(--secondary);font-weight:700;flex-shrink:0}

/* CTA & Contact */
.cta-section{background:linear-gradient(180deg,var(--bg-light) 0%,var(--bg) 100%)}
.cta-box{text-align:center;padding:60px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:40px;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(10,102,255,.1),transparent 70%)}
.cta-box h2{font-size:2rem;margin-bottom:12px;position:relative}
.cta-box p{color:var(--text-muted);margin-bottom:24px;position:relative}
.cta-actions{display:flex;justify-content:center;gap:16px;position:relative;flex-wrap:wrap}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.contact-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;transition:var(--transition)}
.contact-card:hover{border-color:rgba(10,102,255,.3)}
.contact-icon{font-size:2.5rem;margin-bottom:16px}
.contact-card h3{font-size:1rem;margin-bottom:8px}
.contact-card p{color:var(--text-muted);font-size:.85rem;margin-bottom:8px}
.contact-value{display:inline-flex;align-items:center;gap:6px;background:none;border:1px solid transparent;font:inherit;color:var(--primary);font-weight:500;cursor:pointer;transition:var(--transition);padding:8px 14px;border-radius:8px;min-height:40px;text-align:center}
.contact-value:hover{color:#5a9bff;background:rgba(10,102,255,.08);border-color:rgba(10,102,255,.2)}
.contact-value:active{transform:scale(.97)}
.copy-hint{font-size:.7rem;color:var(--text-muted);opacity:.7;font-weight:400}

/* Toast */
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%) translateY(20px);background:rgba(0,0,0,.85);color:#fff;padding:12px 24px;border-radius:8px;font-size:.9rem;z-index:10001;opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1);max-width:90vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Footer */
.footer{background:var(--bg-light);padding:60px 0 30px;border-top:1px solid var(--border)}
.footer-content{display:grid;grid-template-columns:1fr auto;gap:60px;margin-bottom:40px}
.footer-brand p{color:var(--text-muted);margin-top:16px;font-size:.9rem}
.footer-links{display:flex;gap:60px}
.footer-links h4{font-size:.9rem;margin-bottom:16px;color:var(--text)}
.footer-links a{display:block;padding:6px 0;color:var(--text-muted);font-size:.85rem;transition:var(--transition)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{text-align:center;padding-top:30px;border-top:1px solid var(--border);color:var(--text-muted);font-size:.85rem}
.footer-icp{margin-top:8px;font-size:.8rem;opacity:.7}
.footer-bottom a{color:var(--primary)}

/* Scroll Animations */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease;transition-delay:var(--delay,0s)}
.fade-up.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:1024px){
  .hero-content{grid-template-columns:1fr;text-align:center}
  .hero-actions{justify-content:center}
  .phone-mockup{width:240px}
  .features-grid,.scenarios-grid{grid-template-columns:repeat(2,1fr)}
  .download-grid{grid-template-columns:repeat(2,1fr)}
  .guide-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .hero{padding:110px 0 60px}
  .hero-text h1{font-size:2.5rem}
  .hero-desc{font-size:1.05rem}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px;padding:24px 0}
  .stat-divider{display:none}
  .features-grid,.scenarios-grid,.pricing-grid,.contact-cards,.download-grid{grid-template-columns:1fr}
  .guide-steps{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr;gap:32px}
  .footer-links{flex-wrap:wrap;gap:40px}
  .section{padding:70px 0}
  .section-header{margin-bottom:40px}
  .cta-box{padding:40px 24px}
  .cta-box h2{font-size:1.6rem}
  .download-guide{padding:28px 20px}
}
@media(max-width:480px){
  .hero{padding:96px 0 40px}
  .hero-text h1{font-size:2.1rem}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .section-title{font-size:1.85rem}
  .price-card{padding:24px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .phone-mockup{width:220px}
  .trust-tags{gap:10px}
  .trust-tags span{padding:6px 12px;font-size:.8rem}
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  html{scroll-behavior:auto}
  .fade-up{opacity:1!important;transform:none!important}
  .badge-dot,.phone-glow{animation:none!important}
}