#ydt-launcher{position:fixed;bottom:110px;right:22px;width:60px;height:60px;border-radius:50%;background:#00547a;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 24px rgba(2,132,199,.35);z-index:9999}
#ydt-launcher svg{width:28px;height:28px}
#ydt-chat{position:fixed;bottom:90px;right:22px;width:360px;max-width:92vw;background:#fff;border:1px solid #e5e7eb;border-radius:14px;box-shadow:0 16px 40px rgba(2,6,23,.25);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:#0f172a;display:none;flex-direction:column;overflow:hidden;z-index:9999}
#ydt-chat header{padding:10px 12px;background:#00547a;color:#fff;display:flex;align-items:center;gap:8px;justify-content:space-between}
#ydt-chat header .left{display:flex;align-items:center;gap:8px}
#ydt-chat header img.logo{width:28px;height:28px;border-radius:6px;object-fit:cover;display:none}
#ydt-chat header .ttl{font-weight:700}
#ydt-chat header .act{margin-left:auto;display:flex;gap:6px}
#ydt-chat header button{background:rgba(255,255,255,.15);border:0;color:#fff;cursor:pointer;font-size:14px;padding:6px 8px;border-radius:8px}
#ydt-chat header button#ydt-close{font-size:18px;background:transparent;padding:0 6px}
#ydt-chat .msgs{padding:10px;max-height:380px;overflow:auto;background:#f8fafc}
#ydt-chat .msg{margin:8px 0;display:flex;gap:8px}
#ydt-chat .msg.agent{justify-content:flex-start}
#ydt-chat .msg.user{justify-content:flex-end}
#ydt-chat .bubble{padding:10px 12px;border-radius:12px;max-width:80%}
#ydt-chat .agent .bubble{background:#e2f2fb;color:#0f172a}
#ydt-chat .user .bubble{background:#00547a;color:#fff}
#ydt-chat .quick{display:flex;flex-wrap:wrap;gap:6px;padding:6px 10px;background:#fff;border-top:1px solid #e5e7eb}
#ydt-chat .quick button{background:#e2e8f0;border:0;border-radius:10px;padding:8px 10px;cursor:pointer}
#ydt-chat .input{display:flex;gap:6px;border-top:1px solid #e5e7eb;padding:8px;background:#fff}
#ydt-chat input[type=text]{flex:1;border:1px solid #e5e7eb;border-radius:10px;padding:10px}
#ydt-chat button.send{background:#00547a;color:#fff;border:0;border-radius:10px;padding:10px 12px;cursor:pointer}
#ydt-chat .hint{font-size:12px;color:#64748b;padding:6px 10px}