:root{--primary: #1a6bff;--primary-dark: #0d47a1;--primary-light: #4d94ff;--accent: #00d4ff;--bg-dark: #0a1628;--bg-section: #0f1f3d;--bg-card: #132744;--bg-card-hover: #1a3358;--text-primary: #e8f0fe;--text-secondary: #8ba3c7;--text-muted: #5a7399;--border: rgba(77, 148, 255, .15);--border-hover: rgba(77, 148, 255, .4);--gradient-primary: linear-gradient(135deg, #1a6bff 0%, #00d4ff 100%);--gradient-dark: linear-gradient(180deg, #0a1628 0%, #0f1f3d 100%);--shadow-glow: 0 0 40px rgba(26, 107, 255, .2);--shadow-card: 0 8px 32px rgba(0, 0, 0, .3);--radius: 12px;--radius-lg: 20px;--nav-height: 70px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;background:var(--bg-dark);color:var(--text-primary);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto;display:block}a{color:var(--primary-light);text-decoration:none;transition:var(--transition)}a:hover{color:var(--accent)}ul,ol{list-style:none}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3;color:var(--text-primary)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.section{padding:80px 0}.section-alt{background:var(--bg-section)}.section-title{text-align:center;margin-bottom:56px}.section-title h2{font-size:2.2rem;margin-bottom:16px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-title p{color:var(--text-secondary);font-size:1.05rem;max-width:640px;margin:0 auto}.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:#0a1628d9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);z-index:1000;transition:transform .35s ease,background .3s ease}.navbar.hidden{transform:translateY(-100%)}.navbar.scrolled{background:#0a1628f2;box-shadow:0 4px 24px #0000004d}.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.25rem;font-weight:800;color:var(--text-primary)}.nav-logo .logo-icon{width:36px;height:36px;border-radius:10px;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff;font-weight:900}.nav-logo span{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;align-items:center;gap:8px}.nav-links a{color:var(--text-secondary);padding:8px 16px;border-radius:8px;font-size:.95rem;font-weight:500;transition:var(--transition)}.nav-links a:hover,.nav-links a.active{color:var(--text-primary);background:#1a6bff1f}.nav-cta{background:var(--gradient-primary);color:#fff!important;padding:10px 22px!important;border-radius:8px;font-weight:600;box-shadow:0 4px 16px #1a6bff59}.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 24px #1a6bff80}.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;z-index:1001}.nav-toggle span{width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}.nav-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.nav-toggle.open span:nth-child(2){opacity:0}.nav-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.mobile-menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:#0a1628fa;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:999;padding:32px 24px;flex-direction:column;gap:8px;transform:translate(100%);transition:transform .35s ease}.mobile-menu.open{transform:translate(0)}.mobile-menu a{color:var(--text-secondary);padding:16px 20px;border-radius:12px;font-size:1.1rem;font-weight:500;border:1px solid var(--border);transition:var(--transition)}.mobile-menu a:hover,.mobile-menu a.active{color:var(--text-primary);background:#1a6bff1f;border-color:var(--border-hover)}.mobile-menu .nav-cta{text-align:center;margin-top:16px}.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding-top:var(--nav-height);overflow:hidden}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;z-index:0}.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.25}.hero-bg:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,rgba(10,22,40,.6) 0%,rgba(10,22,40,.9) 60%,var(--bg-dark) 100%)}.hero-content{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:60px 24px;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero-text h1{font-size:2.8rem;line-height:1.2;margin-bottom:24px}.hero-text h1 .highlight{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-text p{font-size:1.1rem;color:var(--text-secondary);margin-bottom:36px;max-width:520px}.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;border:none;transition:var(--transition);text-decoration:none}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 20px #1a6bff66}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 32px #1a6bff8c;color:#fff}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-hover)}.btn-outline:hover{background:#1a6bff1a;border-color:var(--primary-light);color:var(--text-primary)}.hero-image{position:relative}.hero-image img{border-radius:var(--radius-lg);box-shadow:var(--shadow-glow),var(--shadow-card);border:1px solid var(--border)}.hero-badges{display:flex;gap:24px;margin-top:40px;flex-wrap:wrap}.hero-badge{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:.9rem}.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;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);transform:scaleX(0);transition:transform .4s ease}.feature-card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);transform:translateY(-6px);box-shadow:var(--shadow-glow)}.feature-card:hover:before{transform:scaleX(1)}.feature-icon{width:56px;height:56px;border-radius:14px;background:#1a6bff1f;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:20px}.feature-card h3{font-size:1.2rem;margin-bottom:12px}.feature-card p{color:var(--text-secondary);font-size:.95rem}.platforms-showcase{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.platforms-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.platform-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;align-items:center;gap:14px;transition:var(--transition)}.platform-item:hover{border-color:var(--border-hover);background:var(--bg-card-hover)}.platform-icon{width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:#fff;flex-shrink:0}.platform-icon.qq{background:#12b7f5}.platform-icon.wechat{background:#07c160}.platform-icon.weibo{background:#e6162d}.platform-icon.alipay{background:#1677ff}.platform-icon.baidu{background:#2932e1}.platform-icon.dingtalk{background:#1e9fff}.platform-item h4{font-size:1rem;margin-bottom:2px}.platform-item p{font-size:.82rem;color:var(--text-muted)}.platform-image img{border-radius:var(--radius-lg);box-shadow:var(--shadow-card);border:1px solid var(--border)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}.stat-item{padding:32px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:var(--transition)}.stat-item:hover{border-color:var(--border-hover);transform:translateY(-4px)}.stat-number{font-size:2.4rem;font-weight:800;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.stat-label{color:var(--text-secondary);font-size:.95rem}.page-hero{padding:calc(var(--nav-height) + 60px) 0 50px;text-align:center;background:var(--gradient-dark);position:relative;overflow:hidden}.page-hero:before{content:"";position:absolute;top:-50%;left:50%;transform:translate(-50%);width:800px;height:800px;background:radial-gradient(circle,rgba(26,107,255,.12) 0%,transparent 70%);pointer-events:none}.page-hero h1{font-size:2.4rem;margin-bottom:16px;position:relative;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.page-hero p{color:var(--text-secondary);font-size:1.05rem;max-width:680px;margin:0 auto;position:relative}.content-section{padding:60px 0}.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:60px}.content-grid.reverse{direction:rtl}.content-grid.reverse>*{direction:ltr}.content-text h2{font-size:1.8rem;margin-bottom:20px}.content-text p{color:var(--text-secondary);margin-bottom:16px;font-size:1rem}.content-text ul{margin-top:16px}.content-text ul li{padding:8px 0 8px 28px;position:relative;color:var(--text-secondary)}.content-text ul li:before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}.content-image img{border-radius:var(--radius-lg);box-shadow:var(--shadow-card);border:1px solid var(--border);width:100%}.code-block{background:#0d1b2e;border:1px solid var(--border);border-radius:var(--radius);padding:24px;overflow-x:auto;font-family:Cascadia Code,Fira Code,Consolas,monospace;font-size:.88rem;line-height:1.6;color:#a8c8f0;margin:16px 0}.code-block .comment{color:#5a7399}.code-block .keyword{color:#c792ea}.code-block .string{color:#c3e88d}.code-block .func{color:#82aaff}.steps-list{counter-reset:step}.step-item{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--border)}.step-item:last-child{border-bottom:none}.step-number{flex-shrink:0;width:48px;height:48px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem;color:#fff}.step-content h3{font-size:1.15rem;margin-bottom:8px}.step-content p{color:var(--text-secondary);font-size:.95rem}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:var(--transition)}.faq-item:hover{border-color:var(--border-hover)}.faq-question{padding:22px 28px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1.05rem;transition:var(--transition)}.faq-question:hover{color:var(--primary-light)}.faq-question .arrow{transition:transform .3s ease;color:var(--text-muted);font-size:1.2rem}.faq-item.open .faq-question .arrow{transform:rotate(180deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s ease;padding:0 28px;color:var(--text-secondary)}.faq-item.open .faq-answer{max-height:500px;padding:0 28px 24px}.timeline{position:relative;padding-left:40px}.timeline:before{content:"";position:absolute;left:12px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--primary),var(--accent))}.timeline-item{position:relative;padding-bottom:40px}.timeline-item:before{content:"";position:absolute;left:-34px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--bg-dark);border:3px solid var(--primary);box-shadow:0 0 12px #1a6bff80}.timeline-item .version{display:inline-block;background:var(--gradient-primary);color:#fff;padding:4px 14px;border-radius:20px;font-size:.85rem;font-weight:700;margin-bottom:10px}.timeline-item .date{color:var(--text-muted);font-size:.88rem;margin-left:12px}.timeline-item h3{font-size:1.15rem;margin-bottom:10px}.timeline-item ul{margin-top:8px}.timeline-item ul li{padding:4px 0 4px 20px;position:relative;color:var(--text-secondary);font-size:.93rem}.timeline-item ul li:before{content:"•";position:absolute;left:0;color:var(--accent)}.security-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.security-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;display:flex;gap:20px;transition:var(--transition)}.security-card:hover{border-color:var(--border-hover);background:var(--bg-card-hover)}.security-card .icon{flex-shrink:0;width:52px;height:52px;border-radius:12px;background:#00d4ff1a;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.security-card h3{font-size:1.1rem;margin-bottom:8px}.security-card p{color:var(--text-secondary);font-size:.92rem}.cta-section{padding:80px 0;text-align:center;background:var(--gradient-dark);position:relative}.cta-section:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at center,rgba(26,107,255,.1) 0%,transparent 70%)}.cta-section h2{font-size:2rem;margin-bottom:16px;position:relative}.cta-section p{color:var(--text-secondary);margin-bottom:32px;position:relative}.cta-section .btn{position:relative}.footer{background:#060e1c;border-top:1px solid var(--border);padding:60px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}.footer-brand p{color:var(--text-muted);font-size:.9rem;margin-top:16px;max-width:280px}.footer-col h4{font-size:1rem;margin-bottom:18px;color:var(--text-primary)}.footer-col a{display:block;color:var(--text-muted);padding:6px 0;font-size:.9rem;transition:var(--transition)}.footer-col a:hover{color:var(--primary-light);padding-left:4px}.footer-bottom{border-top:1px solid var(--border);padding-top:24px;text-align:center;color:var(--text-muted);font-size:.85rem}@media (max-width: 1024px){.features-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width: 768px){:root{--nav-height: 60px}.nav-links{display:none}.nav-toggle,.mobile-menu{display:flex}.hero-content{grid-template-columns:1fr;gap:40px;text-align:center}.hero-text h1{font-size:2rem}.hero-text p{margin:0 auto 32px}.hero-buttons,.hero-badges{justify-content:center}.section{padding:56px 0}.section-title h2{font-size:1.7rem}.features-grid{grid-template-columns:1fr}.platforms-showcase{grid-template-columns:1fr;gap:32px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}.stat-number{font-size:1.8rem}.content-grid,.content-grid.reverse{grid-template-columns:1fr;gap:32px;direction:ltr}.page-hero h1{font-size:1.8rem}.security-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:32px}.platforms-list{grid-template-columns:1fr}.cta-section h2{font-size:1.5rem}}@media (max-width: 480px){.container{padding:0 16px}.hero-text h1{font-size:1.6rem}.btn{padding:12px 24px;font-size:.92rem}.feature-card{padding:28px 20px}}