```css
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#1a73e8;--primary-dark:#0d47a1;--primary-light:#e8f0fe;--secondary:#ff6f00;--accent:#00c853;--bg:#ffffff;--bg-alt:#f5f7fa;--text:#1a1a2e;--text-light:#555;--shadow:0 8px 32px rgba(0,0,0,0.08);--radius:16px;--glass-bg:rgba(255,255,255,0.6);--glass-border:rgba(255,255,255,0.2);--transition:0.3s ease;--max-width:1200px}[data-theme="dark"]{--bg:#0d1117;--bg-alt:#161b22;--text:#f0f6fc;--text-light:#8b949e;--glass-bg:rgba(13,17,23,0.7);--glass-border:rgba(240,246,252,0.1);--shadow:0 8px 32px rgba(0,0,0,0.5);--primary-light:#0d47a1}html{scroll-behavior:smooth;font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background var(--transition),color var(--transition)}a{color:var(--primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--primary-dark)}img,svg{display:block;max-width:100%;height:auto}ul{list-style:none}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.section{padding:80px 0}.section-title{font-size:2.2rem;font-weight:700;margin-bottom:20px;text-align:center}.section-subtitle{text-align:center;color:var(--text-light);max-width:700px;margin:0 auto 50px;font-size:1.1rem}.btn{display:inline-block;padding:14px 36px;border-radius:50px;font-weight:600;background:var(--primary);color:#fff;border:none;cursor:pointer;transition:all var(--transition);text-align:center}.btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(26,115,232,0.3)}.btn-outline{background:transparent;border:2px solid var(--primary);color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.card{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;transition:all var(--transition)}.card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(0,0,0,0.12)}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.flex-center{display:flex;align-items:center;justify-content:center}.text-center{text-align:center}.mt-20{margin-top:20px}.mb-20{margin-bottom:20px}.navbar{position:fixed;top:0;left:0;width:100%;z-index:1000;background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--glass-border);padding:0 20px;transition:background var(--transition)}.navbar .container{display:flex;align-items:center;justify-content:space-between;height:70px}.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.5rem;font-weight:700;color:var(--text)}.nav-logo svg{width:40px;height:40px}.nav-menu{display:flex;gap:28px;align-items:center}.nav-menu a{color:var(--text);font-weight:500;position:relative;padding:6px 0}.nav-menu a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width var(--transition)}.nav-menu a:hover::after,.nav-menu a.active::after{width:100%}.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}.nav-toggle span{width:28px;height:3px;background:var(--text);border-radius:4px;transition:all var(--transition)}.nav-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,6px)}.nav-toggle.active span:nth-child(2){opacity:0}.nav-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-6px)}.theme-toggle{background:none;border:none;font-size:1.4rem;cursor:pointer;color:var(--text);padding:4px}.mobile-menu{display:none;position:fixed;top:70px;left:0;width:100%;height:calc(100vh - 70px);background:var(--bg);z-index:999;flex-direction:column;padding:40px 20px;gap:20px;overflow-y:auto;transition:opacity 0.3s}.mobile-menu.open{display:flex}.mobile-menu a{font-size:1.2rem;padding:12px 0;border-bottom:1px solid var(--glass-border)}.hero{padding:140px 0 80px;background:linear-gradient(135deg,var(--primary-light) 0%,var(--bg) 50%,var(--bg-alt) 100%);position:relative;overflow:hidden}.hero .container{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.hero-content h1{font-size:3.2rem;font-weight:800;line-height:1.2;margin-bottom:20px}.hero-content p{font-size:1.2rem;color:var(--text-light);margin-bottom:30px;max-width:500px}.hero-banner{position:relative}.hero-banner svg{width:100%;height:auto;border-radius:var(--radius)}.hero-badge{display:inline-block;background:var(--primary);color:#fff;padding:6px 18px;border-radius:50px;font-size:0.85rem;margin-bottom:16px}.banner-indicators{display:flex;gap:10px;margin-top:20px;justify-content:center}.banner-indicators span{width:12px;height:12px;border-radius:50%;background:var(--text-light);cursor:pointer;transition:all var(--transition)}.banner-indicators span.active{background:var(--primary);width:36px;border-radius:6px}.breadcrumb{padding:16px 0;background:var(--bg-alt);font-size:0.9rem}.breadcrumb a{color:var(--text-light)}.breadcrumb span{margin:0 8px;color:var(--text-light)}.breadcrumb .current{color:var(--text);font-weight:500}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.stat-item{text-align:center;padding:30px 10px}.stat-number{font-size:2.8rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-light);margin-top:8px;font-size:1rem}.faq-item{border-bottom:1px solid var(--glass-border);padding:18px 0}.faq-question{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-weight:600;font-size:1.05rem}.faq-question svg{transition:transform var(--transition);width:20px;height:20px}.faq-item.open .faq-question svg{transform:rotate(180deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s;padding-top:0;color:var(--text-light)}.faq-item.open .faq-answer{max-height:300px;padding-top:16px}.footer{background:var(--bg-alt);padding:60px 0 30px;border-top:1px solid var(--glass-border)}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}.footer-brand svg{width:50px;height:50px;margin-bottom:16px}.footer-brand p{color:var(--text-light);font-size:0.95rem;max-width:300px}.footer-links h4{font-weight:600;margin-bottom:16px}.footer-links a{display:block;color:var(--text-light);padding:6px 0;font-size:0.95rem}.footer-links a:hover{color:var(--primary)}.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--glass-border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:0.85rem;color:var(--text-light)}.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}.fade-up.visible{opacity:1;transform:translateY(0)}.back-top{position:fixed;bottom:40px;right:40px;width:50px;height:50px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(26,115,232,0.3);z-index:999;transition:all var(--transition)}.back-top.show{display:flex}.back-top:hover{transform:scale(1.1)}@media (max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}}@media (max-width:768px){.nav-menu{display:none}.nav-toggle{display:flex}.hero .container{grid-template-columns:1fr;text-align:center}.hero-content p{margin:0 auto 30px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}.section-title{font-size:1.8rem}.hero-content h1{font-size:2.2rem}.navbar .container{height:60px}.hero{padding:110px 0 50px}.back-top{bottom:20px;right:20px;width:44px;height:44px}}@media (max-width:480px){.stats-grid{grid-template-columns:1fr 1fr}.stat-number{font-size:2rem}}body,.navbar,.card,.footer,.hero,.breadcrumb,.mobile-menu{transition:background 0.3s,color 0.3s,border-color 0.3s}
```