*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic,sans-serif;background:#f5f5f7;color:#1d1d1f}.app{max-width:900px;margin:0 auto;padding:24px 16px 120px;min-height:100vh;display:flex;flex-direction:column}.app-header{margin-bottom:16px}.app-header h1{font-size:20px;margin:0 0 4px}.app-header p{font-size:13px;color:#6e6e73;margin:0}.suggestions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.suggestion-btn{border:1px solid #d2d2d7;background:#fff;border-radius:999px;padding:6px 14px;font-size:13px;cursor:pointer}.suggestion-btn:hover{background:#f0f0f2}.messages{flex:1 1;display:flex;flex-direction:column;gap:16px}.message{border-radius:14px;padding:12px 16px;max-width:100%;line-height:1.7;font-size:14px}.message.user{align-self:flex-end;background:#0071e3;color:#fff;white-space:pre-wrap}.message.assistant{align-self:stretch;background:#fff;border:1px solid #e5e5ea}.message.error{align-self:stretch;background:#fff0f0;border:1px solid #ffb3b3;color:#9c1f1f}.message-toolbar{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:11px;color:#86868b}.print-btn{border:none;background:#f0f0f2;border-radius:6px;padding:4px 10px;cursor:pointer;font-size:12px}.print-btn:hover{background:#e5e5ea}.attachment-chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}.attachment-chip{display:inline-flex;align-items:center;gap:4px;background:#f0f0f2;border-radius:999px;padding:2px 10px;font-size:12px;color:#3a3a3c}.attachment-chip button{border:none;background:none;cursor:pointer;font-size:13px;color:#86868b;padding:0;line-height:1}.composer{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(0deg,#f5f5f7 60%,transparent);padding:16px}.composer .attachment-chips.pending{max-width:900px;margin:0 auto 6px}.composer form{max-width:900px;margin:0 auto;display:flex;align-items:flex-end;gap:8px;background:#fff;border:1px solid #d2d2d7;border-radius:14px;padding:8px}.attach-btn{border:none;background:#f0f0f2;border-radius:10px;width:36px;height:36px;cursor:pointer;font-size:16px;flex-shrink:0}.attach-btn:hover{background:#e5e5ea}.attach-btn:disabled{opacity:.5;cursor:not-allowed}.composer textarea{flex:1 1;border:none;resize:none;font-size:14px;padding:8px;font-family:inherit;outline:none}.composer button{border:none;background:#0071e3;color:#fff;border-radius:10px;padding:0 18px;cursor:pointer;font-size:14px}.composer button:disabled{background:#b3d4f5;cursor:not-allowed}.loading{color:#86868b;font-size:13px}.progress{background:#fff;border:1px solid #e5e5ea;border-radius:14px;padding:12px 16px;font-size:13px}.progress-title{color:#6e6e73;margin-bottom:6px}.progress-steps{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:3px}.progress-steps li.done{color:#6e6e73}.progress-steps li.current{color:#0071e3;font-weight:600;position:relative}.progress-steps li.current:after{content:"";display:inline-block;width:6px;height:6px;margin-left:6px;border-radius:50%;background:#0071e3;animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.3}50%{opacity:1}}#print-area{display:none}@media print{.app-header,.composer,.messages,.suggestions{display:none!important}#print-area{display:block;width:210mm;padding:15mm;font-size:12pt;line-height:1.8}@page{size:A4;margin:0}}