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svg{width:18px;height:18px;stroke:#fff}.user-info{flex:1;min-width:0}.user-name{font-size:14px;font-weight:500;color:var(--gpt-text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-team{font-size:12px;color:var(--gpt-text-tertiary)}.user-plan{display:inline-block;font-size:11px;font-weight:600;padding:2px 8px;border-radius:10px;text-transform:uppercase;letter-spacing:.3px}.plan-free{background:#e5e5e5;color:#666}.plan-basic{background:linear-gradient(135deg,#9ca3af,#6b7280);color:#fff}.plan-updateplus{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff}.plan-pro{background:linear-gradient(135deg,#3b82f6,#10b981);color:#fff}.wisector-main{flex:1;display:flex;flex-direction:column;background:var(--gpt-bg-white);position:relative;overflow:hidden}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;min-height:56px}.model-selector{display:flex;align-items:center;gap:6px;padding:8px 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180px}.hero-title{font-size:32px;font-weight:600;color:var(--gpt-text-primary);margin-bottom:20px;text-align:center}.knowledge-badge{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:var(--gpt-bg-sidebar);border:1px solid var(--gpt-border-light);border-radius:var(--gpt-radius-lg);font-size:14px;color:var(--gpt-text-secondary);cursor:pointer;transition:all .15s ease}.knowledge-badge:hover{background:var(--gpt-bg-hover);border-color:var(--gpt-border-medium)}.knowledge-badge svg{width:18px;height:18px}.chat-messages{flex:1;overflow-y:auto;padding:20px 20px 180px}.message-bubble{max-width:720px;margin:0 auto 24px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-bubble.user{display:flex;justify-content:flex-end}.message-bubble.user .message-content{background:var(--gpt-bg-sidebar);padding:12px 16px;border-radius:var(--gpt-radius-lg);max-width:80%}.message-bubble.assistant 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