*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#2962ff;--primary-dark:#0039cb;--primary-light:#768fff;--accent:#00e676;--accent-dark:#00c853;--bg-dark:#0d0d0d;--bg-card:#161616;--bg-elevated:#1a1a1a;--bg-hover:#222;--text-primary:#fff;--text-secondary:#a0a0a0;--text-muted:#666;--border-color:rgba(255,255,255,0.08);--border-hover:rgba(255,255,255,0.15);--gradient-hero:linear-gradient(135deg,rgba(41,98,255,0.15) 0%,rgba(0,230,118,0.1) 100%);--gradient-btn:linear-gradient(135deg,#2962ff 0%,#00e676 100%);--gradient-card:linear-gradient(180deg,rgba(22,22,22,0.95) 0%,rgba(13,13,13,0.98) 100%);--shadow-sm:0 2px 8px rgba(0,0,0,0.4);--shadow-md:0 8px 24px rgba(0,0,0,0.5);--shadow-lg:0 16px 48px rgba(0,0,0,0.6);--shadow-glow:0 0 40px rgba(41,98,255,0.25);--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--radius-full:9999px;--font-sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-primary);line-height:1.6;overflow-x:hidden;font-size:16px}
a{color:var(--primary-light);text-decoration:none;transition:color 0.25s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;font-size:1rem;font-weight:600;border:none;border-radius:var(--radius-full);cursor:pointer;transition:all 0.3s;text-decoration:none}
.btn-primary{background:var(--gradient-btn);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 50px rgba(41,98,255,0.4)}
.btn-outline{background:transparent;color:#fff;border:2px solid var(--border-hover)}
.btn-outline:hover{border-color:var(--primary);background:rgba(41,98,255,0.1)}
.btn-ghost{background:rgba(255,255,255,0.05);color:#fff;border:1px solid var(--border-color)}
.btn-ghost:hover{background:rgba(255,255,255,0.1);border-color:var(--border-hover)}
.btn-lg{padding:16px 40px;font-size:1.05rem}
.btn-xl{padding:18px 48px;font-size:1.1rem}
.btn-block{width:100%}
.btn-icon{font-size:1.2rem}
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(13,13,13,0.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);transition:all 0.3s}
.header-container{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:14px 24px}
.logo-link{display:flex;align-items:center;gap:12px}
.logo-icon{width:40px;height:40px;border-radius:var(--radius-sm)}
.logo-text{font-size:1.3rem;font-weight:700;background:var(--gradient-btn);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-desktop{display:flex;gap:6px}
.nav-link{padding:10px 18px;color:var(--text-secondary);font-size:0.95rem;font-weight:500;border-radius:var(--radius-full);transition:all 0.25s}
.nav-link:hover{color:#fff;background:rgba(255,255,255,0.05)}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:10px;background:none;border:none;cursor:pointer}
.toggle-bar{width:22px;height:2px;background:#fff;border-radius:2px;transition:0.3s}
.nav-mobile{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-elevated);border-bottom:1px solid var(--border-color);padding:20px 24px;flex-direction:column;gap:10px}
.nav-mobile.active{display:flex}
.nav-link-mobile{padding:14px 20px;color:var(--text-secondary);font-size:1rem;border-radius:var(--radius-md)}
.nav-link-mobile:hover{color:#fff;background:var(--bg-hover)}
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:140px 24px 100px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg-img{width:100%;height:100%;object-fit:cover;opacity:0.4}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,13,0.7) 0%,rgba(13,13,13,0.95) 100%)}
.hero-content{position:relative;z-index:1;max-width:900px;text-align:center}
.breadcrumb{display:flex;justify-content:center;gap:8px;margin-bottom:20px;font-size:0.85rem;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary-light)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;background:rgba(41,98,255,0.1);border:1px solid rgba(41,98,255,0.3);border-radius:var(--radius-full);font-size:0.85rem;color:var(--primary-light);margin-bottom:28px}
.badge-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
.hero-title{font-size:clamp(2.5rem,6vw,4.2rem);font-weight:800;line-height:1.15;margin-bottom:24px;letter-spacing:-0.02em}
.hero-highlight{display:block;font-size:clamp(1.3rem,3vw,2rem);font-weight:600;background:var(--gradient-btn);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-top:12px}
.hero-desc{font-size:1.15rem;color:var(--text-secondary);max-width:700px;margin:0 auto 40px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-bottom:60px}
.hero-metrics{display:flex;justify-content:center;align-items:center;gap:40px;padding:32px 48px;background:rgba(255,255,255,0.03);border:1px solid var(--border-color);border-radius:var(--radius-lg)}
.metric{text-align:center}
.metric-value{font-size:2rem;font-weight:700;background:var(--gradient-btn);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.metric-label{font-size:0.9rem;color:var(--text-muted);margin-top:4px}
.metric-divider{width:1px;height:40px;background:var(--border-color)}
.hero-scroll{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--text-muted);font-size:0.85rem}
.scroll-indicator{width:24px;height:40px;border:2px solid var(--border-hover);border-radius:12px;position:relative}
.scroll-indicator::after{content:'';position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:var(--primary-light);border-radius:2px;animation:scroll 2s infinite}
@keyframes scroll{0%{opacity:1;top:8px}100%{opacity:0;top:24px}}
.section{padding:120px 0}
.section-alt{background:var(--bg-card)}
.section-header{text-align:center;margin-bottom:64px}
.section-tag{display:inline-block;padding:6px 16px;background:rgba(41,98,255,0.1);border:1px solid rgba(41,98,255,0.2);border-radius:var(--radius-full);font-size:0.8rem;font-weight:600;color:var(--primary-light);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:16px}
.section-title{font-size:clamp(2rem,4vw,2.8rem);font-weight:700;margin-bottom:16px;letter-spacing:-0.01em}
.section-desc{font-size:1.1rem;color:var(--text-secondary);max-width:600px;margin:0 auto}
.intro-layout{display:grid;grid-template-columns:2fr 1fr;gap:32px}
.intro-card{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);transition:all 0.4s}
.intro-card:hover{border-color:var(--border-hover)}
.intro-card-primary{display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
.intro-card-content{padding:40px}
.intro-card-content h3{font-size:1.5rem;margin-bottom:20px;color:#fff}
.intro-card-content p{color:var(--text-secondary);margin-bottom:16px;line-height:1.8}
.intro-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{padding:6px 14px;background:rgba(255,255,255,0.05);border-radius:var(--radius-full);font-size:0.85rem;color:var(--text-secondary)}
.intro-card-visual{display:flex;align-items:center;justify-content:center;background:rgba(41,98,255,0.05);padding:32px}
.intro-card-visual img{max-width:100%;border-radius:var(--radius-md)}
.intro-side{display:flex;flex-direction:column;gap:16px}
.intro-card-mini{padding:28px}
.intro-card-mini .card-icon{font-size:2rem;margin-bottom:12px}
.intro-card-mini h4{font-size:1.1rem;color:#fff;margin-bottom:10px}
.intro-card-mini p{font-size:0.95rem;color:var(--text-muted);line-height:1.7}
.download-hero{position:relative;border-radius:var(--radius-lg);overflow:hidden;margin-bottom:48px;height:280px}
.download-hero-img{width:100%;height:100%;object-fit:cover}
.download-hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,13,13,0.95) 0%,rgba(13,13,13,0.5) 100%)}
.download-hero-content{position:absolute;left:48px;top:50%;transform:translateY(-50%)}
.download-hero-content h3{font-size:2.2rem;font-weight:700;margin-bottom:8px}
.download-hero-content p{color:var(--text-secondary)}
.download-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px}
.download-card{position:relative;background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:36px;transition:all 0.4s}
.download-card:hover{border-color:var(--primary);transform:translateY(-4px)}
.download-card-featured{border-color:rgba(0,230,118,0.3)}
.download-card-badge{position:absolute;top:16px;right:16px;padding:4px 12px;background:var(--accent);color:var(--bg-dark);font-size:0.75rem;font-weight:700;border-radius:var(--radius-full)}
.download-card-icon{font-size:3rem;margin-bottom:20px}
.download-card h3{font-size:1.4rem;margin-bottom:12px}
.download-card>p{color:var(--text-muted);margin-bottom:24px;line-height:1.7}
.download-list{margin-bottom:28px}
.download-list li{position:relative;padding-left:24px;color:var(--text-secondary);margin-bottom:12px}
.download-list li::before{content:'✓';position:absolute;left:0;color:var(--accent)}
.download-warning{display:flex;gap:20px;padding:28px 32px;background:rgba(255,193,7,0.08);border:1px solid rgba(255,193,7,0.2);border-radius:var(--radius-md)}
.warning-icon{font-size:2rem;flex-shrink:0}
.warning-content h4{color:#ffc107;font-size:1.1rem;margin-bottom:8px}
.warning-content p{color:var(--text-secondary);line-height:1.8}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-item{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:36px;text-align:center;transition:all 0.4s}
.feature-item:hover{border-color:var(--primary);transform:translateY(-6px);box-shadow:var(--shadow-glow)}
.feature-icon-wrap{width:80px;height:80px;margin:0 auto 24px;background:rgba(41,98,255,0.1);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;overflow:hidden}
.feature-icon-wrap img{width:100%;height:100%;object-fit:cover}
.feature-item h4{font-size:1.15rem;margin-bottom:12px}
.feature-item p{color:var(--text-muted);font-size:0.95rem;line-height:1.7}
.tutorial-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:start}
.tutorial-steps{display:flex;flex-direction:column;gap:20px}
.tutorial-step{display:flex;gap:24px;padding:28px;background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all 0.3s}
.tutorial-step:hover{border-color:var(--border-hover)}
.step-number{flex-shrink:0;width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--gradient-btn);border-radius:var(--radius-md);font-size:1.1rem;font-weight:700}
.step-body h4{font-size:1.1rem;margin-bottom:10px}
.step-body p{color:var(--text-muted);font-size:0.95rem;line-height:1.8}
.tutorial-visual{position:sticky;top:120px}
.phone-frame{background:linear-gradient(145deg,#1a1a1a,#0d0d0d);border-radius:40px;padding:12px;margin-bottom:32px;box-shadow:var(--shadow-lg)}
.phone-frame img{width:100%;border-radius:32px}
.tutorial-tips{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:28px}
.tutorial-tips h4{font-size:1.1rem;margin-bottom:16px}
.tutorial-tips ul{margin-bottom:24px}
.tutorial-tips li{position:relative;padding-left:20px;color:var(--text-muted);margin-bottom:10px;font-size:0.95rem}
.tutorial-tips li::before{content:'•';position:absolute;left:0;color:var(--primary-light)}
.security-hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,13,13,0.95) 0%,rgba(13,13,13,0.6) 100%)}
.security-hero-text{position:absolute;left:48px;top:50%;transform:translateY(-50%)}
.security-hero-text h3{font-size:1.8rem;margin-bottom:8px}
.security-hero-text p{color:var(--text-secondary)}
.security-intro{max-width:900px;margin:0 auto 48px;text-align:center}
.security-intro p{color:var(--text-secondary);margin-bottom:16px;line-height:1.9}
.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:48px}
.security-card{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:28px;text-align:center;transition:all 0.4s}
.security-card:hover{border-color:rgba(239,68,68,0.3);transform:translateY(-4px)}
.security-card-icon{font-size:2.5rem;margin-bottom:16px}
.security-card h4{font-size:1rem;margin-bottom:10px}
.security-card p{color:var(--text-muted);font-size:0.9rem;line-height:1.7}
.security-qa{max-width:900px;margin:0 auto}
.security-qa>h4{font-size:1.2rem;margin-bottom:24px;text-align:center}
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.qa-item{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px}
.qa-item h5{font-size:1rem;color:var(--primary-light);margin-bottom:10px}
.qa-item p{color:var(--text-muted);font-size:0.95rem;line-height:1.8}
.verify-content{display:grid;grid-template-columns:1fr 1.5fr;gap:48px;align-items:start;margin-bottom:48px}
.verify-image img{border-radius:var(--radius-lg)}
.verify-text>p{color:var(--text-secondary);margin-bottom:28px;line-height:1.8}
.verify-methods{display:flex;flex-direction:column;gap:20px}
.verify-method{display:flex;gap:16px;align-items:start}
.method-num{flex-shrink:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--gradient-btn);border-radius:50%;font-size:0.9rem;font-weight:700}
.verify-method h5{font-size:1rem;margin-bottom:6px}
.verify-method p{color:var(--text-muted);font-size:0.9rem;line-height:1.7}
.verify-cta{text-align:center;padding:40px;background:var(--gradient-card);border:1px solid rgba(41,98,255,0.2);border-radius:var(--radius-lg)}
.verify-cta p{color:var(--text-secondary);margin-bottom:20px}
.faq-list{max-width:900px;margin:0 auto 48px;display:flex;flex-direction:column;gap:16px}
.faq-item{background:var(--gradient-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:28px;transition:all 0.3s}
.faq-item:hover{border-color:var(--border-hover)}
.faq-question{font-size:1.05rem;margin-bottom:12px}
.faq-answer{color:var(--text-muted);line-height:1.8;margin-bottom:12px}
.faq-time{font-size:0.8rem;color:var(--text-muted)}
.faq-more{text-align:center}
.faq-more p{color:var(--text-secondary);margin-bottom:16px}
.contact-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:48px}
.contact-info h4{font-size:1.4rem;margin-bottom:16px}
.contact-info>p{color:var(--text-secondary);margin-bottom:28px;line-height:1.8}
.contact-warning{background:rgba(239,68,68,0.08);border:1px solid rgba(239,68,68,0.2);border-radius:var(--radius-md);padding:20px;margin-bottom:28px}
.contact-warning h5{color:#ef4444;margin-bottom:8px}
.contact-warning p{color:var(--text-muted);font-size:0.95rem;line-height:1.7}
.contact-channels{display:flex;flex-direction:column;gap:16px}
.channel{display:flex;gap:16px;align-items:center;padding:16px;background:var(--bg-hover);border-radius:var(--radius-md)}
.channel-icon{font-size:1.8rem}
.channel h5{font-size:1rem;margin-bottom:4px}
.channel p{color:var(--text-muted);font-size:0.9rem}
.contact-card{background:var(--gradient-card);border:1px solid rgba(41,98,255,0.3);border-radius:var(--radius-lg);padding:40px;text-align:center}
.contact-card h4{font-size:1.3rem;margin-bottom:12px}
.contact-card>p{color:var(--text-secondary);margin-bottom:28px}
.contact-tip{display:block;margin-top:16px;color:var(--text-muted);font-size:0.85rem}
.footer{background:var(--bg-dark);border-top:1px solid var(--border-color);padding:80px 0 40px}
.footer-top{display:grid;grid-template-columns:1fr 2fr;gap:60px;margin-bottom:48px}
.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-logo{width:48px;height:48px;border-radius:var(--radius-sm)}
.footer-brand-name{font-size:1.4rem;font-weight:700}
.footer-slogan{color:var(--text-muted);font-size:0.9rem}
.footer-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.footer-col h5{font-size:1rem;margin-bottom:20px}
.footer-col a{display:block;color:var(--text-muted);font-size:0.9rem;padding:8px 0;transition:color 0.25s}
.footer-col a:hover{color:var(--primary-light)}
.footer-bottom{padding-top:32px;border-top:1px solid var(--border-color);text-align:center}
.copyright{color:var(--text-muted);font-size:0.85rem;margin-bottom:8px}
.disclaimer{color:var(--text-muted);font-size:0.8rem;max-width:800px;margin:0 auto;opacity:0.7}
.float-buttons{position:fixed;right:24px;bottom:100px;display:flex;flex-direction:column;gap:12px;z-index:999}
.float-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:60px;height:60px;background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:50%;cursor:pointer;transition:all 0.3s;box-shadow:var(--shadow-md)}
.float-btn:hover{transform:scale(1.1);border-color:var(--primary)}
.float-btn-chat{background:var(--gradient-btn);border:none}
.float-btn span:first-child{font-size:1.3rem}
.float-btn span:last-child{font-size:0.65rem;color:var(--text-muted);margin-top:2px}
.float-btn-chat span:last-child{color:#fff}
.float-btn-top{opacity:0;visibility:hidden;transform:translateY(20px)}
.float-btn-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
@media(max-width:1024px){.nav-desktop{display:none}.nav-toggle{display:flex}.intro-layout{grid-template-columns:1fr}.intro-card-primary{grid-template-columns:1fr}.download-cards{grid-template-columns:1fr}.features-grid{grid-template-columns:repeat(2,1fr)}.tutorial-layout{grid-template-columns:1fr}.tutorial-visual{position:static;display:grid;grid-template-columns:1fr 1fr;gap:24px}.phone-frame{margin-bottom:0}.security-grid{grid-template-columns:repeat(2,1fr)}.qa-grid{grid-template-columns:1fr}.verify-content{grid-template-columns:1fr}.contact-layout{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-nav{margin-top:32px}}
@media(max-width:768px){.section{padding:80px 0}.hero{min-height:auto;padding:120px 24px 80px}.hero-title{font-size:2.2rem}.hero-metrics{flex-direction:column;gap:24px;padding:24px}.metric-divider{width:60px;height:1px}.features-grid{grid-template-columns:1fr}.security-grid{grid-template-columns:1fr}.tutorial-visual{grid-template-columns:1fr}.download-hero{height:200px}.download-hero-content{left:24px}.download-hero-content h3{font-size:1.6rem}.security-hero{height:180px}.security-hero-text{left:24px}.security-hero-text h3{font-size:1.4rem}.footer-nav{grid-template-columns:repeat(2,1fr)}.float-buttons{right:16px;bottom:90px}.float-btn{width:54px;height:54px}}
@media(max-width:480px){.hero-actions{flex-direction:column;width:100%}.hero-actions .btn{width:100%}.btn-xl{padding:16px 32px;font-size:1rem}.footer-nav{grid-template-columns:1fr}}{position:relative;border-radius:var(--radius-lg);overflow:hidden;margin-bottom:48px;height:240px}
.security-hero-img{width:100%;height:100%;object-fit:cover}
.security-hero