*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{color:#1a1a1a;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none;transition:color .15s}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea,select{border:none;outline:none;font-family:inherit}ul,ol{list-style:none}img{max-width:100%;height:auto}.section-header{text-align:center;margin-bottom:2.5rem}.section-header h2{color:#1a1a1a;margin-bottom:.5rem;font-size:1.5rem;font-weight:600}.section-header p{color:#666;font-size:.9rem}.navbar{z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-bottom:.5px solid #0000000a;height:56px;transition:all .3s;position:fixed;top:0;left:0;right:0}.navbar.scrolled{box-shadow:0 1px 3px #00000014}.navbar .navbar-container{justify-content:space-between;align-items:center;max-width:1200px;height:100%;margin:0 auto;padding:0 2rem;display:flex}.navbar .logo{align-items:center;gap:8px;display:flex}.navbar .logo-mark{background:#1d9e75;border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.navbar .logo-mark svg{width:16px;height:16px}.navbar .logo-text-wrap{flex-direction:column;display:flex}.navbar .logo-text{color:#1a1a1a;font-size:15px;font-weight:600;line-height:1.2}.navbar .logo-sub{color:#666;font-size:11px;line-height:1.2}.navbar .nav-links{align-items:center;gap:1.5rem;display:flex}.navbar .nav-links a{color:#666;font-size:14px;transition:color .15s}.navbar .nav-links a:hover{color:#1a1a1a}.navbar .mobile-menu-btn{flex-direction:column;gap:4px;padding:8px;display:none}.navbar .mobile-menu-btn span{background:#1a1a1a;width:20px;height:2px;transition:all .15s}.navbar .mobile-menu-btn.active span:first-child{transform:rotate(45deg)translate(4px,4px)}.navbar .mobile-menu-btn.active span:nth-child(2){opacity:0}.navbar .mobile-menu-btn.active span:nth-child(3){transform:rotate(-45deg)translate(4px,-4px)}@media (width<=768px){.navbar .nav-links{opacity:0;visibility:hidden;background:#fff;flex-direction:column;gap:1rem;padding:1.5rem;transition:all .3s;position:fixed;top:56px;left:0;right:0;transform:translateY(-100%);box-shadow:0 4px 12px #0000001a}.navbar .nav-links.active{opacity:1;visibility:visible;transform:translateY(0)}.navbar .mobile-menu-btn{display:flex}}.btn-primary{color:#fff;background:#1d9e75;border-radius:8px;padding:7px 16px;font-size:13px;font-weight:500;transition:background .15s}.btn-primary:hover{background:#0f6e56}.btn-outline{color:#1a1a1a;background:0 0;border:.5px solid #0000001a;border-radius:8px;padding:9px 20px;font-size:14px;transition:all .15s}.btn-outline:hover{background:#f8f9fa}.btn-lg{padding:10px 24px;font-size:14px}.hero-section{text-align:center;background:linear-gradient(#f8f9fa 0%,#fff 100%);padding:7rem 2rem 4rem}.hero-section .hero-container{max-width:860px;margin:0 auto}.hero-section .hero-badge{color:#0f6e56;background:#e1f5ee;border-radius:999px;align-items:center;gap:6px;margin-bottom:1.5rem;padding:4px 12px;font-size:12px;font-weight:500;animation:.6s forwards fadeInUp;display:inline-flex}.hero-section .hero-title{color:#1a1a1a;opacity:0;margin-bottom:1rem;font-size:clamp(28px,5vw,44px);font-weight:600;line-height:1.25;animation:.6s .1s forwards fadeInUp}.hero-section .hero-title em{color:#1d9e75;font-style:normal}.hero-section .hero-desc{color:#666;opacity:0;max-width:560px;margin:0 auto 2.5rem;font-size:16px;line-height:1.7;animation:.6s .2s forwards fadeInUp}.hero-section .hero-actions{opacity:0;flex-wrap:wrap;justify-content:center;gap:12px;animation:.6s .3s forwards fadeInUp;display:flex}.generator-section{width:100%;max-width:720px;margin:0 auto 4rem;padding:0 2rem}.generator-section .gen-card{background:#fff;border:.5px solid #0000000a;border-radius:16px;padding:1.5rem;box-shadow:0 4px 12px #0000001a}.generator-section .gen-tabs{gap:4px;margin-bottom:1.25rem;display:flex}.generator-section .gen-tab{cursor:pointer;color:#666;background:0 0;border:.5px solid #0000;border-radius:8px;flex:1;padding:7px;font-size:13px;font-weight:400;transition:all .15s}.generator-section .gen-tab.active,.generator-section .gen-tab:hover{color:#1a1a1a;background:#f8f9fa;border-color:#0000000a;font-weight:500}.generator-section .tab-content{display:none}.generator-section .tab-content.active{display:block}.generator-section .gen-input-wrap{margin-bottom:1rem}.generator-section textarea{resize:vertical;color:#1a1a1a;background:#f8f9fa;border:.5px solid #0000000a;border-radius:8px;width:100%;min-height:96px;padding:12px;font-size:14px;line-height:1.6;transition:border-color .15s}.generator-section textarea:focus{border-color:#1d9e75;outline:none}.generator-section textarea::placeholder{color:#999}.generator-section .upload-zone{text-align:center;cursor:pointer;background:#f8f9fa;border:1px dashed #0000001a;border-radius:8px;margin-bottom:1rem;padding:2rem;transition:border-color .15s}.generator-section .upload-zone:hover{border-color:#1d9e75}.generator-section .upload-zone .upload-icon{color:#999;margin-bottom:8px}.generator-section .upload-zone .upload-text{color:#666;font-size:13px}.generator-section .upload-zone .upload-text span{color:#999;margin-top:4px;font-size:11px;display:block}.generator-section .gen-options{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:1rem;display:grid}@media (width<=480px){.generator-section .gen-options{grid-template-columns:1fr}}.generator-section .gen-select-wrap label{color:#666;margin-bottom:4px;font-size:12px;display:block}.generator-section .gen-select-wrap select{color:#1a1a1a;cursor:pointer;background:#f8f9fa;border:.5px solid #0000000a;border-radius:8px;width:100%;padding:7px 10px;font-size:13px}.generator-section .gen-footer{justify-content:space-between;align-items:center;display:flex}.generator-section .gen-hint{color:#666;font-size:12px}.generator-section .btn-generate{color:#fff;background:#1d9e75;border-radius:8px;align-items:center;gap:8px;padding:9px 24px;font-size:14px;font-weight:500;transition:background .15s;display:flex}.generator-section .btn-generate:hover{background:#0f6e56}.generator-section .btn-generate:disabled{color:#666;cursor:not-allowed;background:#f8f9fa}.generator-section .progress-bar-wrap{margin-top:1rem;display:none}.generator-section .progress-bar-wrap.active{display:block}.generator-section .progress-label{color:#666;justify-content:space-between;margin-bottom:6px;font-size:12px;display:flex}.generator-section .progress-track{background:#f8f9fa;border-radius:999px;height:4px;overflow:hidden}.generator-section .progress-fill{background:#1d9e75;border-radius:999px;width:0%;height:100%;transition:width .4s}.stats-section{background:#f8f9fa;border-top:.5px solid #0000000a;border-bottom:.5px solid #0000000a;padding:2.5rem 2rem}.stats-inner{text-align:center;grid-template-columns:repeat(3,1fr);gap:1rem;max-width:700px;margin:0 auto;display:grid}@media (width<=480px){.stats-inner{grid-template-columns:1fr;gap:1.5rem}}.stat-item .stat-num{color:#1d9e75;font-size:28px;font-weight:600}.stat-item .stat-num:after{content:"+"}.stat-item .stat-label{color:#666;margin-top:4px;font-size:13px}.features-section{background:#f8f9fa;border-top:.5px solid #0000000a;padding:4rem 2rem}.features-inner{max-width:900px;margin:0 auto}.features-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;display:grid}.feature-card{opacity:0;background:#fff;border:.5px solid #0000000a;border-radius:12px;padding:1.25rem;transition:all .5s;transform:translateY(20px)}.feature-card.animate-in{opacity:1;transform:translateY(0)}.feature-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px #0000001a}.feature-card .feature-icon{border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;margin-bottom:12px;display:flex}.feature-card h3{color:#1a1a1a;margin-bottom:6px;font-size:14px;font-weight:600}.feature-card p{color:#666;font-size:13px;line-height:1.6}.agents-section{max-width:900px;margin:0 auto;padding:4rem 2rem}.agents-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:2rem;display:grid}.agent-card{text-align:center;opacity:0;background:#fff;border:.5px solid #0000000a;border-radius:12px;padding:1.25rem;transition:all .5s;transform:translateY(20px)}.agent-card.animate-in{opacity:1;transform:translateY(0)}.agent-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px #0000001a}.agent-card .agent-avatar{border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;margin:0 auto 10px;font-size:18px;font-weight:600;display:flex}.agent-card h3{color:#1a1a1a;margin-bottom:4px;font-size:14px;font-weight:600}.agent-card p{color:#666;font-size:12px;line-height:1.5}.agent-card .agent-tag{border-radius:999px;margin-top:8px;padding:2px 8px;font-size:11px;font-weight:500;display:inline-block}.scene-preview{max-width:900px;margin:0 auto;padding:4rem 2rem}.scene-tabs{flex-wrap:wrap;gap:8px;margin-bottom:1.5rem;display:flex}.scene-tab-btn{cursor:pointer;color:#666;background:0 0;border:.5px solid #0000001a;border-radius:999px;padding:6px 14px;font-size:13px;transition:all .15s}.scene-tab-btn:hover{color:#1d9e75;border-color:#1d9e75}.scene-tab-btn.active{color:#fff;background:#1d9e75;border-color:#1d9e75}.scene-display{background:#f8f9fa;border:.5px solid #0000000a;border-radius:12px;min-height:200px;padding:1.5rem}.scene-slide{display:none}.scene-slide.active{display:block}.slide-header{align-items:center;gap:12px;margin-bottom:1rem;display:flex}.slide-header .avatar{border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:600;display:flex}.slide-header .info{flex:1}.slide-header .info h4{color:#1a1a1a;font-size:14px;font-weight:600}.slide-header .info p{color:#666;font-size:12px}.slide-header .live-badge{color:#0f6e56;align-items:center;gap:6px;font-size:12px;display:flex}.slide-header .live-badge .live-dot{background:#1d9e75;border-radius:50%;width:8px;height:8px;animation:1.5s ease-in-out infinite pulse}.slide-content{color:#666;font-size:14px;line-height:1.7}.slide-content .slide-title{color:#1a1a1a;margin-bottom:12px;font-size:18px;font-weight:600}.slide-content p{margin-bottom:12px}.slide-points{flex-direction:column;gap:8px;display:flex}.slide-points li{align-items:flex-start;gap:8px;font-size:13px;display:flex}.slide-points .point-dot{background:#1d9e75;border-radius:50%;flex-shrink:0;width:6px;height:6px;margin-top:6px}.quiz-q{color:#1a1a1a;margin-bottom:1rem;font-size:15px;font-weight:500}.quiz-options{flex-direction:column;gap:8px;display:flex}.quiz-opt{cursor:pointer;background:#fff;border:.5px solid #0000000a;border-radius:8px;padding:10px 14px;font-size:13px;transition:all .15s}.quiz-opt:hover{border-color:#1d9e75}.quiz-opt.correct{color:#0f6e56;background:#e1f5ee;border-color:#1d9e75}.quiz-opt.wrong{color:#c0392b;background:#fee;border-color:#e74c3c}.discussion-msg{gap:10px;margin-bottom:12px;display:flex}.discussion-msg .avatar{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:11px;font-weight:600;display:flex}.discussion-msg .bubble{background:#fff;border:.5px solid #0000000a;border-radius:0 8px 8px;max-width:85%;padding:8px 12px;font-size:13px;line-height:1.5}.discussion-msg.self{flex-direction:row-reverse}.discussion-msg.self .bubble{color:#0f6e56;background:#e1f5ee;border-color:#1d9e754d;border-radius:8px 0 8px 8px}.contact-section{background:linear-gradient(#f8f9fa 0%,#fff 100%);padding:4rem 2rem}.contact-inner{max-width:600px;margin:0 auto}.contact-cards{grid-template-columns:repeat(2,1fr);gap:16px;display:grid}@media (width<=480px){.contact-cards{grid-template-columns:1fr}}.contact-card{text-align:center;background:#fff;border:2px solid #0000;border-radius:12px;padding:1.5rem;transition:all .3s;box-shadow:0 1px 3px #00000014}.contact-card:hover{border-color:#1d9e75;transform:translateY(-4px);box-shadow:0 4px 12px #0000001a}.contact-card:hover .contact-icon{color:#fff;background:#1d9e75}.contact-card .contact-icon{color:#1d9e75;background:#e1f5ee;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;margin:0 auto 12px;transition:all .3s;display:flex}.contact-card h3{color:#1a1a1a;margin-bottom:6px;font-size:14px;font-weight:600}.contact-card a{color:#1d9e75;font-size:14px}.contact-card a:hover{text-decoration:underline}.footer{color:#fff;background:#1a1a1a;padding:2rem}.footer .footer-container{text-align:center;max-width:800px;margin:0 auto}.footer .footer-brand{margin-bottom:1.5rem}.footer .footer-brand .footer-logo{margin-bottom:4px;font-size:1.25rem;font-weight:600;display:block}.footer .footer-brand p{color:#ffffffb3;font-size:13px}.footer .footer-beian{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-bottom:1rem;display:flex}.footer .footer-beian a{color:#fffc;align-items:center;gap:4px;font-size:12px;transition:color .15s;display:inline-flex}.footer .footer-beian a:hover{color:#fff}.footer .footer-beian a img{width:14px;height:14px}.footer .footer-beian .beian-divider{color:#ffffff4d}.footer .footer-copyright{color:#ffffff80;font-size:12px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (width<=768px){.hero-section{padding:5rem 1.5rem 3rem}.hero-section .hero-title{font-size:24px}.hero-section .hero-desc{font-size:14px}.generator-section{padding:0 1rem}.generator-section .gen-card{padding:1rem}.features-section,.agents-section,.scene-preview,.contact-section{padding:3rem 1rem}.section-header h2{font-size:1.25rem}}