@import url(https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap);body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}*{box-sizing:border-box;margin:0;padding:0}body{background-color:#f8f9fa;color:#333;font-family:Noto Sans SC,sans-serif;line-height:1.6}.container{margin:0 auto;max-width:1200px;padding:0 20px}.hero-section{background:linear-gradient(135deg,#1a2a6c,#b21f1f,#1a2a6c);color:#fff;padding:100px 20px;text-align:center}.main-title{font-size:3rem;font-weight:700;margin-bottom:10px}.main-subtitle{color:#fc0;font-size:1.8rem;font-weight:500;margin-bottom:20px}.subtitle{font-size:1.5rem;font-weight:400;margin-bottom:15px}.tagline{font-size:1.2rem;font-weight:300;margin-bottom:30px}.download-section{margin:30px 0}.download-buttons{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;margin-bottom:20px}.download-button{background-color:#ff6b35;border-radius:50px;box-shadow:0 4px 15px #0003;color:#fff;display:inline-block;font-size:1.1rem;font-weight:500;min-width:250px;padding:15px 30px;text-decoration:none;transition:all .3s ease}.download-button:hover{background-color:#e55a2b;box-shadow:0 6px 20px #0000004d;transform:translateY(-3px)}.download-button.secondary{background-color:#4a6fa5}.download-button.secondary:hover{background-color:#3a5a80}.error-text,.loading-text{font-size:1.2rem;margin:20px 0}.error-text{color:#ff6b6b}.daily-limit{font-size:1rem;font-weight:300;margin:0 auto;max-width:800px}.engine-section,.features-section,.solutions-section,.use-cases-section{padding:80px 0}.features-section{background-color:#fff}.engine-section{background-color:#f0f4f8}.solutions-section{background-color:#fff}.use-cases-section{background-color:#f0f4f8}.section-title{color:#1a2a6c;font-size:2.5rem;margin-bottom:10px;text-align:center}.section-subtitle{color:#666;font-size:1.2rem;font-weight:400;margin-bottom:30px;text-align:center}.section-description{color:#555;font-size:1.2rem;margin:0 auto 50px;max-width:800px;text-align:center}.features-grid{grid-gap:30px;display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.feature-card{background:#fff;border-radius:10px;box-shadow:0 5px 15px #0000001a;padding:30px;transition:transform .3s ease}.feature-card:hover{transform:translateY(-10px)}.feature-card h3{color:#1a2a6c;font-size:1.5rem;margin-bottom:15px}.feature-card p{color:#666;font-size:1rem}.engines-container{display:flex;flex-wrap:wrap;gap:30px;justify-content:center}.engine-card{background:#fff;border-radius:10px;box-shadow:0 5px 15px #0000001a;flex:1 1;min-width:300px;padding:30px;text-align:center}.engine-card h3{color:#b21f1f;margin-bottom:15px}.solutions-grid{grid-gap:25px;display:grid;gap:25px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.solution-card{background:#fff;border-radius:10px;box-shadow:0 5px 15px #0000001a;padding:25px}.solution-card h3{color:#1a2a6c;margin-bottom:15px}.use-cases-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.use-case{background:#fff;border-radius:10px;box-shadow:0 5px 15px #0000001a;padding:25px;text-align:center}.use-case h3{color:#b21f1f;margin-bottom:15px}.footer{background:#1a2a6c;color:#fff;padding:50px 0 20px;text-align:center}.footer-tagline{font-size:1.5rem;font-weight:500;margin-bottom:20px}.footer-name{font-size:1.2rem;margin-bottom:10px}.footer-subname{color:#ccc;font-size:1rem;margin-bottom:20px}.registration-info{color:#ccc;font-size:.9rem;line-height:1.6;margin-bottom:20px}.registration-info a{color:#ccc;text-decoration:none}.registration-info a:hover{color:#fc0;text-decoration:underline}.public-security-registration{align-items:center;display:inline-flex;gap:5px;justify-content:center}.beian-icon{height:16px;vertical-align:middle;width:16px}.copyright{color:#ccc;font-size:.9rem}@media (max-width:768px){.main-title{font-size:2rem}.main-subtitle{font-size:1.3rem}.subtitle{font-size:1.2rem}.section-title{font-size:2rem}.section-subtitle{font-size:1rem}.engines-container,.features-grid,.solutions-grid,.use-cases-grid{grid-template-columns:1fr}.hero-section{padding:60px 20px}.engine-section,.features-section,.solutions-section,.use-cases-section{padding:50px 0}.download-buttons{align-items:center;flex-direction:column}.download-button{min-width:200px}.public-security-registration{flex-direction:column}}
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