@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";.navbar{position:fixed;top:0;left:0;width:100%;z-index:1000;background:transparent;padding:1.5rem 0;transition:all .3s ease}.navbar.scrolled{background:#ffffffb3;backdrop-filter:blur(20px) saturate(1.8);-webkit-backdrop-filter:blur(20px) saturate(1.8);padding:.8rem 0;box-shadow:0 4px 30px #00000008;border-bottom:1px solid rgba(255,255,255,.3)}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:0 2rem}.nav-logo{font-size:1.4rem;font-weight:800;color:var(--bg-white);text-decoration:none;display:flex;align-items:center;gap:12px;letter-spacing:1px}.navbar.scrolled .nav-logo{color:var(--primary)}.logo-placeholder{width:36px;height:36px;background-color:var(--accent);border-radius:4px}.nav-menu{display:flex;list-style:none;gap:1.5rem;align-items:center}.nav-link{text-decoration:none;color:#ffffffd9;transition:all .4s cubic-bezier(.165,.84,.44,1);display:flex;flex-direction:column;align-items:center;position:relative;padding:5px 0}.navbar.scrolled .nav-link{color:var(--text-main)}.nav-link .en{font-size:.85rem;font-weight:700;letter-spacing:1.5px;margin-bottom:2px}.nav-link .cn{font-size:.65rem;font-weight:500;opacity:.5;transition:all .3s ease}.nav-link:after{content:"";position:absolute;bottom:-4px;left:50%;width:0;height:2px;background-color:var(--accent);transition:all .4s cubic-bezier(.165,.84,.44,1);transform:translate(-50%)}.nav-link:hover{transform:translateY(-3px);color:var(--accent)}.navbar.scrolled .nav-link:hover{color:var(--accent)}.nav-link:hover .cn{opacity:1}.nav-link:hover:after,.nav-link.active:after{width:100%}.nav-link.active{color:var(--accent)}.nav-link.active .cn{opacity:1}.footer{background-color:var(--primary);color:var(--bg-white);padding:4rem 0 2rem;margin-top:0;border-top:4px solid var(--accent)}.footer-content{display:flex;flex-wrap:wrap;justify-content:space-between;gap:3rem;margin-bottom:3rem}.footer-brand{flex:2;min-width:320px}.footer-logo{font-size:1.6rem;font-weight:800;margin-bottom:1.5rem;letter-spacing:1px}.footer-brand p{color:#a0aab5;line-height:1.8;max-width:400px}.footer-links{flex:1;min-width:200px}.footer-links h4{font-size:1.1rem;margin-bottom:1.5rem;color:var(--bg-white);font-weight:600;position:relative;padding-bottom:10px}.footer-links h4:after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background-color:var(--accent)}.footer-links ul{list-style:none;padding:0}.footer-links li{margin-bottom:12px}.footer-links a,.contact-info li{color:#a0aab5;text-decoration:none;transition:color .3s ease;font-size:.95rem}.footer-links a:hover{color:var(--accent)}.footer-bottom{max-width:1200px;margin:0 auto;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1);text-align:center;color:#718096;font-size:.85rem}.footer-bottom a{color:#718096;text-decoration:none}.footer-bottom a:hover{color:var(--bg-white)}@media (max-width: 768px){.footer-content{flex-direction:column;gap:2rem}}:root{--chat-primary: #1a1a1a;--chat-accent: #007aff;--chat-bg: #ffffff;--chat-bubble-self: #1a1a1a;--chat-bubble-other: #f2f2f7;--chat-text-main: #1c1c1e;--chat-text-muted: #8e8e93;--chat-border: #e5e5ea;--extra-soft-shadow: 0 12px 40px rgba(0, 0, 0, .12)}.chat-fab{position:fixed;bottom:30px;right:30px;width:60px;height:60px;border-radius:50%;background:var(--chat-primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px #0003;z-index:9998;transition:all .4s cubic-bezier(.2,1,.3,1);border:none}.chat-fab:hover{transform:scale(1.1) translateY(-5px);box-shadow:0 8px 30px #0000004d}.chat-fab-icon{width:26px;height:26px;transition:transform .3s ease}.chat-fab-hidden{transform:scale(0);opacity:0;pointer-events:none}.chat-fab-badge{position:absolute;top:-4px;right:-4px;background:#ff3b30;color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:0 5px;border:2px solid white;animation:badge-pop .4s cubic-bezier(.16,1,.3,1) both}.chat-fab-alert:before{content:"";position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:50%;border:2px solid #ff3b30;animation:pulse-ring 1.8s cubic-bezier(.22,1,.36,1) infinite;pointer-events:none}.chat-fab-alert:after{content:"";position:absolute;top:-12px;right:-12px;bottom:-12px;left:-12px;border-radius:50%;background:radial-gradient(circle,rgba(255,59,48,.18) 0%,transparent 70%);animation:pulse-glow 1.8s ease-in-out infinite;pointer-events:none}.chat-fab-alert{position:fixed;animation:fab-shake 8s ease-in-out infinite}@keyframes pulse-ring{0%{transform:scale(1);opacity:.9}70%{transform:scale(1.6);opacity:0}to{transform:scale(1.6);opacity:0}}@keyframes pulse-glow{0%,to{opacity:.4;transform:scale(1)}50%{opacity:1;transform:scale(1.15)}}@keyframes fab-shake{0%,5%,to{transform:scale(1) rotate(0)}1%{transform:scale(1.12) rotate(-8deg)}2%{transform:scale(1.12) rotate(8deg)}3%{transform:scale(1.12) rotate(-6deg)}4%{transform:scale(1.12) rotate(6deg)}}@keyframes badge-pop{0%{transform:scale(0) rotate(-20deg);opacity:0}70%{transform:scale(1.2) rotate(5deg);opacity:1}to{transform:scale(1) rotate(0);opacity:1}}.chat-window{position:fixed;bottom:30px;right:30px;width:380px;height:600px;background:var(--chat-bg);border-radius:20px;box-shadow:var(--extra-soft-shadow);z-index:9999;display:flex;flex-direction:column;overflow:hidden;transform:scale(.9) translateY(20px);transform-origin:bottom right;opacity:0;pointer-events:none;transition:all .4s cubic-bezier(.16,1,.3,1);border:1px solid var(--chat-border)}.chat-window-open{transform:scale(1) translateY(0);opacity:1;pointer-events:auto}.chat-header{padding:20px 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--chat-border);background:#fff}.chat-header-info{display:flex;align-items:center;gap:12px}.chat-header-avatar{width:40px;height:40px;background:#f2f2f7;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem}.chat-header-title{font-weight:600;font-size:15px;color:var(--chat-text-main);letter-spacing:-.2px}.chat-header-status{font-size:12px;color:#34c759;margin-top:2px;display:flex;align-items:center;gap:5px}.chat-header-status-dot{width:6px;height:6px;background:#34c759;border-radius:50%}.chat-close-btn{background:none;border:none;color:var(--chat-text-muted);cursor:pointer;font-size:18px;padding:5px;transition:color .2s}.chat-close-btn:hover{color:var(--chat-text-main)}.chat-body{flex:1;overflow-y:auto;padding:24px;background:#fff;display:flex;flex-direction:column;gap:16px}.chat-body::-webkit-scrollbar{width:5px}.chat-body::-webkit-scrollbar-thumb{background:#e5e5ea;border-radius:10px}.chat-welcome{text-align:center;padding:60px 20px}.chat-welcome-icon{font-size:40px;margin-bottom:16px}.chat-welcome p{color:var(--chat-text-muted);font-size:14px;line-height:1.6}.chat-msg{display:flex;flex-direction:column;max-width:80%}.chat-msg-self{align-self:flex-end;align-items:flex-end}.chat-msg-other{align-self:flex-start;align-items:flex-start}.chat-msg-bubble{padding:12px 16px;border-radius:18px;font-size:14px;line-height:1.5;word-break:break-word;white-space:pre-wrap}.chat-msg-self .chat-msg-bubble{background:var(--chat-bubble-self);color:#fff;border-bottom-right-radius:4px}.chat-msg-other .chat-msg-bubble{background:var(--chat-bubble-other);color:var(--chat-text-main);border-bottom-left-radius:4px}.chat-msg-time{font-size:11px;color:var(--chat-text-muted);margin-top:6px;padding:0 4px}.chat-footer{padding:16px 20px 24px;background:#fff;display:flex;gap:12px;align-items:flex-end;border-top:1px solid var(--chat-border)}.chat-image-btn{background:#f2f2f7;border:none;border-radius:50%;width:40px;height:40px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;color:var(--chat-text-main)}.chat-image-btn:hover:not(:disabled){background:#e5e5ea}.chat-input{flex:1;background:#f2f2f7;border:none;border-radius:20px;padding:10px 16px;font-size:14px;font-family:inherit;resize:none;outline:none;max-height:100px;color:var(--chat-text-main)}.chat-input::placeholder{color:#a1a1a6}.chat-send-btn{background:var(--chat-accent);color:#fff;border:none;border-radius:50%;width:40px;height:40px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform .2s,background .2s}.chat-send-btn:hover:not(:disabled){background:#06c;transform:scale(1.05)}.chat-send-btn:disabled{opacity:.3;cursor:not-allowed}.chat-send-btn svg{transform:translate(1px)}.chat-msg-image{display:block;max-width:240px;border-radius:12px;cursor:pointer;transition:opacity .2s}.chat-msg-image:hover{opacity:.9}.chat-btn-spinner{width:18px;height:18px;border:2px solid rgba(0,0,0,.1);border-top-color:var(--chat-text-main);border-radius:50%;animation:chat-spin .8s linear infinite}@keyframes chat-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 480px){.chat-window{width:100%;height:100%;bottom:0;right:0;border-radius:0}}.image-preview-modal{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:100001;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);cursor:zoom-out;animation:modalFadeIn .3s ease}.image-preview-content{position:relative;max-width:90vw;max-height:90vh;cursor:default}.image-preview-content img{max-width:100%;max-height:90vh;display:block;border-radius:8px;box-shadow:0 20px 50px #00000080;animation:imageZoomIn .3s cubic-bezier(.16,1,.3,1)}.image-preview-close{position:absolute;top:-40px;right:-40px;background:none;border:none;color:#fff;font-size:30px;cursor:pointer;padding:10px;line-height:1}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}@keyframes imageZoomIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}:root{--primary: #1A2A3A;--accent: #F2994A;--accent-alt: #219653;--bg-color: #F8F9FA;--bg-white: #FFFFFF;--white: #FFFFFF;--text-main: #333333;--text-muted: #666666;--border-color: #E2E8F0;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);--shadow-md: 0 8px 24px rgba(0, 0, 0, .08);--transition: all .3s ease;--border-radius: 4px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.6;overflow-x:hidden}.app-container{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}.animate-fade-in{animation:fadeInUp .6s ease-out forwards}.animate-slide-in{animation:slideInLeft .6s ease-out forwards}@keyframes shimmer{0%{transform:translate(-150%) skew(-25deg)}50%{transform:translate(250%) skew(-25deg)}to{transform:translate(250%) skew(-25deg)}}.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;padding:14px 34px;border-radius:8px;font-weight:600;font-size:1.05rem;text-decoration:none;cursor:pointer;overflow:hidden;transition:all .4s cubic-bezier(.175,.885,.32,1.275);letter-spacing:.5px;z-index:1}.btn-primary{background:linear-gradient(135deg,#f2994a,#e67e22);color:var(--bg-white);box-shadow:0 6px 20px #f2994a59;border:none}.btn-alibaba{background:linear-gradient(135deg,#ff6a00,#ee5100)!important;border:none!important;color:#fff!important}.btn-alibaba:hover{background:linear-gradient(135deg,#ee5100,#d34700)!important;box-shadow:0 6px 20px #ee510080!important;transform:translateY(-3px) scale(1.02)}.btn-primary:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 3.5s infinite;z-index:1}.btn-primary:hover{background:linear-gradient(135deg,#faad3d,#f39c12);transform:translateY(-5px) scale(1.05);box-shadow:0 12px 35px #f2994a8c}.btn-secondary{background-color:transparent;color:var(--bg-white);border:2px solid rgba(255,255,255,.5);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.btn-secondary:hover{background-color:var(--bg-white);color:var(--primary);transform:translateY(-4px) scale(1.03);box-shadow:0 10px 25px #0003;border-color:var(--bg-white)}h1,h2,h3,h4,h5{font-weight:800;line-height:1.2}h1{font-size:3.5rem;letter-spacing:-1px}h2{font-size:2.5rem}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--text-main)}.input-control{width:100%;padding:14px 20px;border-radius:var(--border-radius);border:1px solid #E0E0E0;background-color:var(--white);font-family:inherit;font-size:1rem;transition:var(--transition)}.input-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px #ff7b001a;outline:none}