:root{--teal: #00b894;--amber: #ff8a00;--text: #1f2937;--muted: #6b7280;--bg: #f8fafc;--card: #fff;--border: #e5e7eb;--me-bubble: linear-gradient(135deg, var(--teal), #0e9f6e)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;padding:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg);color:var(--text)}.container{max-width:1100px;margin:0 auto;padding:16px}.header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.header-in{display:flex;justify-content:space-between;align-items:center;padding:10px 16px}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand img{height:34px;display:block}.btn,.btn-primary{border:1px solid var(--border);padding:9px 14px;border-radius:12px;cursor:pointer;font-weight:600}.btn{background:#fff}.btn:hover{background:#f3f4f6}.btn-primary{background:var(--teal);color:#fff;border:none}.btn-primary:hover{filter:brightness(.95)}.input{width:100%;border:1px solid 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