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p{font-size:1.125rem;color:#64748b;max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:3rem;align-items:center}.feature-card{background:#fff;border-radius:16px;padding:2.5rem;box-shadow:0 4px 6px -1px #0000001a;border:1px solid #e2e8f0;transition:all .3s ease}.feature-card:hover{transform:translateY(-4px);box-shadow:0 20px 25px -5px #0000001a}.feature-icon{width:60px;height:60px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:1.5rem;color:#fff;font-size:1.5rem}.feature-card h3{font-size:1.5rem;font-weight:600;color:#1e293b;margin-bottom:1rem}.feature-card p{color:#64748b;line-height:1.7}.feature-image{text-align:center;padding:2rem}.feature-image img{max-width:100%;height:auto;border-radius:12px;box-shadow:0 10px 25px -5px #0000001a}.security-trust{padding:6rem 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0;background:linear-gradient(135deg,#1e293b,#334155);color:#fff}.contact-content{text-align:center;max-width:600px;margin:0 auto}.contact h2{font-size:2.5rem;font-weight:700;margin-bottom:1rem}.contact p{font-size:1.125rem;margin-bottom:2rem;opacity:.9}.contact-info{display:flex;justify-content:center;gap:3rem;flex-wrap:wrap;margin-top:3rem}.contact-item{display:flex;align-items:center;gap:.75rem;background:#ffffff1a;padding:1rem 1.5rem;border-radius:12px;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.contact-item i{font-size:1.25rem;color:#60a5fa}.wechat-item{flex-direction:column;text-align:center;padding:1.5rem}.wechat-group{display:flex;flex-direction:column;align-items:center;gap:1rem}.qr-code{border-radius:8px;box-shadow:0 4px 8px #0003}.wechat-text{display:flex;align-items:center;gap:.5rem;font-size:.9rem}.footer{background:#0f172a;color:#fff;padding:2rem 0;text-align:center}.footer p{opacity:.8;font-size:.9rem}@media (max-width: 768px){.banner h1{font-size:2.5rem}.banner .subtitle{font-size:1.125rem}.download-buttons{flex-direction:column;align-items:center}.nav-links{display:none}.section-title h2{font-size:2rem}.features-grid,.trust-grid{grid-template-columns:1fr}.contact-info{flex-direction:column;align-items:center}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in-up{animation:fadeInUp .6s ease-out}.floating-btn{position:fixed;bottom:30px;right:30px;background:#2563eb;color:#fff;border:none;border-radius:50%;width:60px;height:60px;font-size:1.5rem;box-shadow:0 4px 12px #2563eb66;cursor:pointer;transition:all .3s ease;z-index:1000}.floating-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #2563eb99}.beian-link{color:inherit;text-decoration:underline}.beian-link:hover{color:inherit}