:root{--primary-color: #10b981;--bg-color: #f4f7f6;--text-color: #333;--group-title-color: #7c3aed}body{font-family:Inter,system-ui,sans-serif;margin:0;padding:0;background-color:var(--bg-color);color:var(--text-color)}.hub-container{max-width:1000px;margin:0 auto;padding:2rem 1rem}.header{text-align:center;margin-bottom:3rem}.header h1{color:#1f2937;font-size:2.2rem;margin-bottom:.5rem}.header p{color:#6b7280}.group-section{margin-bottom:4rem}.group-title{text-align:center;color:var(--group-title-color);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;margin-bottom:1.5rem}.group-title.orange{color:#f97316}.group-title.green{color:#10b981}.group-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.bot-card{background:#fff;border-radius:16px;padding:2rem 1.5rem;text-align:center;box-shadow:0 4px 15px #00000008;cursor:pointer;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;align-items:center;border:1px solid #e5e7eb}.bot-card:hover{transform:translateY(-5px);box-shadow:0 15px 30px #00000014;border-color:var(--primary-color)}.bot-icon{font-size:3rem;margin-bottom:1rem}.bot-icon img{width:70px;height:70px;border-radius:50%;object-fit:cover;box-shadow:0 4px 10px #0000001a}.bot-card h3{margin:0 0 1rem;color:#2563eb;font-size:1.2rem}.bot-desc{font-size:.9rem;color:#4b5563;margin-bottom:1rem;line-height:1.5;flex-grow:1}.bot-grade{font-size:.85rem;font-weight:600;color:#f97316;margin-bottom:1.5rem}.bot-btn{background:var(--primary-color);color:#fff;border:none;border-radius:20px;padding:.6rem 2rem;font-size:.9rem;font-weight:600;cursor:pointer;transition:opacity .2s,transform .2s}.bot-card:hover .bot-btn{transform:scale(1.05)}.bot-btn.outline{background:#ecfdf5;color:#059669;border:1px solid #6ee7b7}.featured-section{display:flex;justify-content:center}.featured-card{background:#1e293b;border-radius:16px;padding:2.5rem;width:100%;max-width:800px;color:#fff;cursor:pointer;transition:transform .2s;border:1px solid #475569;position:relative;text-align:left;box-shadow:0 20px 40px -10px #0000004d}.featured-card:hover{transform:scale(1.02);border-color:#f59e0b}.hot-badge{position:absolute;top:1.5rem;right:1.5rem;background:linear-gradient(to right,#f97316,#ef4444);color:#fff;font-size:.75rem;font-weight:700;padding:.3rem 1rem;border-radius:20px;box-shadow:0 4px 10px #ef444466}.fc-header{display:flex;align-items:center;gap:1.5rem;margin-bottom:1.5rem}.fc-icon{background:linear-gradient(135deg,#f97316,#f59e0b);width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:2rem;box-shadow:0 4px 15px #f973164d}.fc-header h3{margin:0;font-size:1.8rem;color:#fcd34d}.fc-desc{font-size:1rem;line-height:1.6;color:#cbd5e1;margin-bottom:1.5rem}.fc-tags{display:flex;gap:.8rem;margin-bottom:2rem;flex-wrap:wrap}.fc-tag{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);padding:.4rem 1rem;border-radius:20px;font-size:.85rem;color:#e2e8f0}.fc-tag i{color:#f59e0b;margin-right:5px}.fc-box{background:#0f172a;border:1px solid #3b82f6;border-radius:12px;padding:1.5rem}.fc-box h4{color:#fcd34d;margin:0 0 .8rem;font-size:1rem;display:flex;align-items:center;gap:8px}.fc-box p{margin:0 0 1.5rem;font-size:.9rem;color:#94a3b8;line-height:1.5}.fc-buttons{display:flex;gap:1rem}.fc-btn-primary{background:linear-gradient(to right,#f97316,#ea580c);color:#fff;border:none;padding:.7rem 1.5rem;border-radius:8px;font-weight:700;cursor:pointer;transition:transform .2s}.fc-btn-primary:hover{transform:translateY(-2px)}.fc-btn-secondary{background:transparent;color:#cbd5e1;border:1px solid #475569;padding:.7rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:background .2s}.fc-btn-secondary:hover{background:#ffffff0d}.chat-container{background:#f0f2f5;border-radius:20px;box-shadow:0 20px 40px #0000001a;height:85vh;max-height:850px;display:flex;flex-direction:column;overflow:hidden;border:1px solid #e5e7eb}.chat-header{background:#fff;padding:1rem 1.5rem;display:flex;align-items:center;border-bottom:1px solid #e5e7eb;box-shadow:0 2px 10px #00000008;z-index:10}.back-button{background:#f3f4f6;border:none;color:#4b5563;width:40px;height:40px;border-radius:50%;cursor:pointer;margin-right:1rem;display:flex;align-items:center;justify-content:center;font-size:1.2rem;transition:background .2s}.back-button:hover{background:#e5e7eb}.chat-header h2{margin:0;font-size:1.2rem;color:#1f2937;display:flex;align-items:center}.chat-messages{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.message-row{display:flex;gap:12px;align-items:flex-end;max-width:85%}.message-row.user{align-self:flex-end;flex-direction:row-reverse}.message-row.bot{align-self:flex-start}.avatar{width:36px;height:36px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:0 2px 5px #0000000d;flex-shrink:0;object-fit:cover}.bubble{padding:.8rem 1.2rem;border-radius:20px;line-height:1.6;font-size:.95rem}.message-row.user .bubble{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border-bottom-right-radius:4px;box-shadow:0 4px 10px #2563eb33}.message-row.bot .bubble{background:#fff;color:#1f2937;border-bottom-left-radius:4px;box-shadow:0 2px 8px #0000000a;white-space:pre-wrap}.chat-input-area{padding:1rem 1.5rem;background:#fff;border-top:1px solid #e5e7eb}.input-wrapper{display:flex;align-items:center;background:#f3f4f6;border-radius:24px;padding:.4rem .4rem .4rem 1.5rem}.input-wrapper input{flex:1;border:none;background:transparent;outline:none;font-size:1rem;color:#1f2937}.send-btn{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 10px #10b9814d}.send-btn:hover{transform:scale(1.05)}.send-btn:disabled{background:#d1d5db;box-shadow:none;cursor:not-allowed;transform:none}.dict-fab{position:fixed;bottom:30px;right:30px;width:60px;height:60px;background:linear-gradient(135deg,#7c3aed,#6d28d9);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 10px 25px #7c3aed66;cursor:pointer;z-index:1000;border:3px solid white;transition:transform .3s,box-shadow .3s}.dict-fab:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 15px 30px #7c3aed99}.dict-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1001;display:flex;align-items:center;justify-content:center}.dict-modal{background:#fff;width:90%;max-width:400px;border-radius:20px;box-shadow:0 25px 50px -12px #00000080;overflow:hidden;display:flex;flex-direction:column;height:500px;animation:modalPop .3s cubic-bezier(.175,.885,.32,1.275)}@keyframes modalPop{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.dict-header{background:linear-gradient(135deg,#7c3aed,#6d28d9);color:#fff;padding:1rem 1.5rem;display:flex;justify-content:space-between;align-items:center}.dict-header h3{margin:0;font-size:1.1rem;display:flex;align-items:center;gap:8px}.dict-close{background:#fff3;border:none;color:#fff;width:30px;height:30px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center}.dict-close:hover{background:#ffffff4d}.dict-body{flex:1;padding:1.5rem;overflow-y:auto;background:#f8fafc}.dict-result-box{background:#fff;padding:1rem;border-radius:12px;box-shadow:0 2px 8px #0000000d;margin-top:1rem;white-space:pre-wrap;font-size:.95rem;line-height:1.6;border-left:4px solid #7c3aed}.dict-input-area{padding:1rem;background:#fff;border-top:1px solid #e2e8f0;display:flex;gap:10px}.dict-input-area input{flex:1;padding:.8rem 1rem;border-radius:20px;border:1px solid #cbd5e1;outline:none;font-size:.95rem}.dict-input-area input:focus{border-color:#7c3aed}.dict-send{background:#7c3aed;color:#fff;border:none;border-radius:20px;padding:0 1.2rem;cursor:pointer;font-weight:600}.dict-send:disabled{background:#cbd5e1}