@keyframes messageIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}*,::after,::before{margin:0;padding:0;box-sizing:border-box}:root{--bg-overlay:rgba(245, 243, 240, 0.88);--text-primary:#1a1a1a;--text-secondary:#555;--text-muted:#888;--border-color:#e0e0e0;--input-bg:#fff;--send-btn-bg:#1a1a1a;--send-btn-hover:#333;--user-msg-bg:rgba(45, 55, 72, 0.9);--user-msg-text:#fff;--assistant-msg-bg:#fff;--table-header-bg:#2c3e50;--table-row-hover:#f8f9fa;--table-border:#e0e0e0}html{font-size:16px}body{font-family:"DM Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:url(bg.webp)no-repeat center center fixed;background-size:cover;color:var(--text-primary);line-height:1.6;min-height:100vh}body::before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:var(--bg-overlay);z-index:-1}.content-card,.page-wrapper{display:flex;flex-direction:column}.page-wrapper{max-width:1100px;margin:0 auto;padding:0 24px;min-height:100vh}.content-card{padding:24px 0;flex:1}.header{margin-bottom:24px}.logo{height:64px;width:auto;display:block}.hero-section{text-align:center}.hero-title{font-size:2.5rem;font-weight:700;color:var(--text-primary);margin-bottom:10px;letter-spacing:-.5px}.hero-description{font-size:1rem;color:var(--text-primary);line-height:1.6}.chat-section,.hero-section{background:rgba(255,255,255,.75)}.hero-section{padding:28px 32px 20px;margin:0}.chat-messages,.chat-section{display:flex;flex-direction:column}.chat-section{padding:0 32px 80px;min-height:0}.chat-messages{flex:1;overflow-y:auto;padding:0 4px;margin-bottom:16px;gap:12px;max-height:500px}.chat-messages:empty{display:none}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:0 0}.chat-messages::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}.chat-messages::-webkit-scrollbar-thumb:hover{background:#aaa}.message{animation:messageIn .3s ease-out}.message-user{align-self:flex-end;max-width:80%}.message-user .message-bubble{background:var(--user-msg-bg);color:var(--user-msg-text);padding:12px 18px;border-radius:20px 20px 4px 20px;font-size:.95rem;box-shadow:0 2px 8px rgba(0,0,0,.12)}.message-assistant{align-self:flex-start;max-width:95%;width:100%}.message-assistant .message-bubble{background:rgba(255,255,255,.95);color:var(--text-primary);padding:16px 20px;border-radius:20px 20px 20px 4px;font-size:.95rem;box-shadow:0 1px 4px rgba(0,0,0,.06)}.message-bubble p{margin-bottom:10px}.message-bubble p:last-child{margin-bottom:0}.message-bubble strong,.message-bubble table th{font-weight:600;color:var(--text-primary)}.message-bubble ol,.message-bubble ul{margin:10px 0 10px 20px;color:var(--text-secondary)}.message-bubble li{margin-bottom:6px}.message-bubble code{background:#f0f0f0;padding:2px 6px;border-radius:4px;font-family:"SF Mono",Monaco,"Courier New",monospace;font-size:.85em;color:#c7254e}.message-bubble pre{background:#2d2d2d;color:#f8f8f2;padding:14px;border-radius:8px;overflow-x:auto;margin:12px 0;font-size:.85rem}.message-bubble pre code{background:0 0;padding:0;color:inherit}.message-bubble .table-wrapper{overflow-x:auto;margin:16px 0;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.08)}.message-bubble table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:400px}.message-bubble table th{background:#e0e0e0;padding:10px 14px;text-align:left;font-size:.85rem;border-bottom:1px solid #ccc}.message-bubble table th:first-child{border-radius:8px 0 0 0}.message-bubble table th:last-child{border-radius:0 8px 0 0}.message-bubble table td{padding:11px 14px;border-bottom:1px solid var(--table-border);color:var(--text-primary)}.message-bubble table tr:last-child td{border-bottom:none}.message-bubble table tr:last-child td:first-child{border-radius:0 0 0 8px}.message-bubble table tr:last-child td:last-child{border-radius:0 0 8px 0}.message-bubble table tbody tr:hover{background:var(--table-row-hover)}.message-bubble table tbody tr:nth-child(even){background:rgba(250,250,250,.9)}.message-bubble table tbody tr:nth-child(even):hover{background:var(--table-row-hover)}.message-bubble h1,.message-bubble h2,.message-bubble h3,.message-bubble h4{color:var(--text-primary);margin:16px 0 10px;font-weight:600}.message-bubble h3{font-size:1.15rem}.message-bubble h4{font-size:1.05rem}.message-error .message-bubble{background:#fef2f2;border-left:3px solid #ef4444}.message-loading .message-bubble{display:flex;align-items:center;gap:8px;color:var(--text-muted)}.typing-indicator{display:flex;gap:4px}.typing-indicator span{width:6px;height:6px;background:var(--text-muted);border-radius:50%;animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(1){animation-delay:0s}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}.input-wrapper{position:relative;display:flex;align-items:center;background:rgba(255,255,255,.98);border:1px solid var(--border-color);border-radius:50px;padding:6px 6px 6px 24px;transition:border-color .2s,box-shadow .2s;box-shadow:0 2px 8px rgba(0,0,0,.04)}.input-wrapper:focus-within{border-color:#999;box-shadow:0 0 0 3px rgba(0,0,0,.05)}.chat-input{flex:1;border:0;background:0 0;font-size:1rem;font-family:inherit;color:var(--text-primary);outline:0;padding:12px 0}.chat-input::placeholder,.form-group input::placeholder{color:var(--text-muted)}.send-btn{width:48px;height:48px;border-radius:50%;border:0;background:var(--send-btn-bg);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,transform .1s;flex-shrink:0}.send-btn:hover{background:var(--send-btn-hover)}.send-btn:active{transform:scale(.95)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.send-btn svg{width:20px;height:20px}.contact-section{margin-top:16px}.section-title{font-size:1.6rem;color:var(--text-primary);margin-bottom:8px;text-align:center;font-weight:700}.section-description{text-align:center;color:var(--text-secondary);font-size:.95rem;margin-bottom:20px}.contact-form{max-width:600px;margin:0 auto}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.form-group{display:flex;flex-direction:column}.form-group label{font-weight:500;color:var(--text-primary);margin-bottom:6px;font-size:.9rem}.form-group input,.form-group select{padding:12px 14px;border:1px solid var(--border-color);border-radius:10px;font-size:.95rem;transition:border-color .2s;background:rgba(255,255,255,.95);color:var(--text-primary);font-family:inherit}.form-group input:focus,.form-group select:focus{outline:0;border-color:#999}.form-group select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}.form-group select option{background:#fff;color:var(--text-primary)}.submit-button{width:100%;padding:14px;background:linear-gradient(135deg,#3a3a3a 0,#1a1a1a 100%);color:#fff;border:0;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;margin-top:8px;font-family:inherit}.submit-button:hover{background:linear-gradient(135deg,#4a4a4a 0,#2a2a2a 100%);transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.2)}.submit-button:disabled{opacity:.6;cursor:not-allowed}.success-message{max-width:600px;margin:20px auto 0;padding:24px;background:#22c55e;border-radius:12px;text-align:center}.success-message p{color:#fff;font-size:1.05rem;margin:0}.footer{text-align:center;padding:24px 0 16px;color:var(--text-muted);font-size:.85rem;margin-top:24px}@media (max-width:768px){.page-wrapper{padding:0}.content-card{padding:20px 0}.logo{height:52px}.header{margin-bottom:20px}.hero-title{font-size:1.85rem}.hero-description{font-size:.95rem}.hero-section{padding:24px 20px 16px}.chat-section{padding:0 20px 64px}.chat-messages{max-height:400px}.message-assistant,.message-user{max-width:95%}.message-bubble table{font-size:.8rem;min-width:300px}.message-bubble table td,.message-bubble table th{padding:8px 10px}.input-wrapper{padding:4px 4px 4px 18px}.chat-input{font-size:1rem;padding:10px 0}.send-btn{width:44px;height:44px}.form-row{grid-template-columns:1fr;gap:12px}.section-title{font-size:1.4rem}.contact-section{margin-top:14px}}@media (max-width:480px){.page-wrapper{padding:0}.content-card{padding:16px 0}.logo{height:44px}.header{margin-bottom:16px}.hero-title{font-size:1.5rem}.hero-description{font-size:.9rem}.hero-section{padding:20px 16px 14px}.chat-section{padding:0 16px 56px}.chat-messages{max-height:350px;gap:10px}.message-assistant .message-bubble,.message-user .message-bubble{padding:10px 14px;font-size:.9rem}.message-bubble table{font-size:.75rem}.message-bubble table td,.message-bubble table th{padding:6px 8px}.input-wrapper{padding:3px 3px 3px 14px;border-radius:40px}.chat-input{font-size:.95rem;padding:8px 0}.send-btn{width:40px;height:40px}.send-btn svg{width:18px;height:18px}.section-title{font-size:1.25rem}.section-description{font-size:.85rem;margin-bottom:16px}.form-group input,.form-group select{padding:10px 12px;font-size:.9rem}.submit-button{padding:12px;font-size:.95rem}.contact-section{margin-top:12px}.footer{font-size:.8rem;padding:20px 0 12px;margin-top:20px}}