*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{color:#222;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;background:#f5f6fa;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif}#app{max-width:640px;height:100vh;height:var(--app-h,100dvh);background:#fff;flex-direction:column;margin:0 auto;display:flex;position:relative;overflow:hidden}.chat-header{padding:10px 14px;padding-top:calc(10px + env(safe-area-inset-top));color:#fff;background:#3b82f6;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;font-size:15px;display:flex}.chat-header .title{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.chat-header .status{opacity:.9;white-space:nowrap;flex-shrink:0;font-size:12px}.header-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.end-btn{color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.55);border-radius:14px;height:28px;padding:0 10px;font-size:12px}.end-btn:disabled{opacity:.45}.chat-header .status[data-kind=error]{color:#fde68a}.chat-header .status[data-kind=online]{color:#bbf7d0}.chat-header .status[data-kind=closed]{color:#fecaca}.messages{-webkit-overflow-scrolling:touch;background:#f5f6fa;flex:1;min-height:0;padding:12px 12px 8px;overflow-y:auto}.msg{align-items:flex-start;gap:8px;margin-bottom:12px;display:flex}.msg.customer{flex-direction:row-reverse}.msg.agent{flex-direction:row}.msg.system{justify-content:center;margin-bottom:8px}.avatar{color:#fff;background:#94a3b8;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:13px;font-weight:600;display:flex;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.08)}.avatar-svg{width:100%;height:100%;display:block}.avatar-img{object-fit:cover;width:100%;height:100%;display:block}.robot-avatar{background:#eef3ff;box-shadow:0 1px 3px rgba(37,99,235,.22)}.human-avatar{background:#fff;border:1px solid #e5e7eb;box-shadow:0 1px 3px rgba(15,23,42,.16)}.customer-avatar{border:0}.bubble-wrap{flex-direction:column;min-width:0;max-width:calc(100% - 44px);display:flex}.msg.customer .bubble-wrap{align-items:flex-end}.msg.agent .bubble-wrap{align-items:flex-start}.meta{color:#9ca3af;align-items:baseline;gap:6px;max-width:100%;margin-bottom:3px;padding:0 4px;font-size:11px;display:flex}.meta>span:first-child{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.meta .ts{color:#c1c4cc;flex-shrink:0}.bubble{word-break:break-word;overflow-wrap:anywhere;white-space:pre-wrap;border-radius:14px;max-width:100%;padding:9px 12px;font-size:15px;line-height:1.5}.msg.customer .bubble{color:#fff;background:#3b82f6;border-bottom-right-radius:4px}.msg.agent .bubble{color:#222;background:#fff;border:1px solid #e5e7eb;border-bottom-left-radius:4px}.msg.agent .bubble.guide-bubble{white-space:normal;background:0 0;border:0;border-radius:0;padding:0}.msg.system .bubble{color:#6b7280;text-align:center;background:0 0;max-width:80%;padding:2px 8px;font-size:12px}.bubble.pending{opacity:.6}.chat-image{object-fit:contain;cursor:zoom-in;border-radius:8px;max-width:min(260px,72vw);max-height:320px;display:block}.guide-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;width:min(260px,100%);padding:8px;overflow:hidden;box-shadow:0 1px 2px rgba(15,23,42,.05)}.guide-title{color:#9ca3af;padding:0 4px 8px;font-size:13px;line-height:1.3}.guide-option{color:#2563eb;text-align:left;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;-ms-appearance:none;appearance:none;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;width:100%;min-height:42px;padding:0 10px 0 12px;font-family:inherit;font-size:14px;font-weight:600;display:flex;box-shadow:0 1px 2px rgba(37,99,235,.12)}.guide-option:last-child{border-bottom:1px solid #bfdbfe}.guide-option:active{background:#dbeafe;transform:translateY(1px)}.guide-option span:first-child{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.guide-arrow{color:#2563eb;flex-shrink:0;font-size:20px;font-weight:700;line-height:1}.image-preview-mask{z-index:60;background:rgba(15,23,42,.9);justify-content:center;align-items:center;padding:56px 14px 24px;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.image-preview{object-fit:contain;max-width:100%;max-height:100%;display:block}.image-preview-back{top:calc(12px + env(safe-area-inset-top));color:#1f2937;background:rgba(255,255,255,.92);border:0;border-radius:18px;height:36px;padding:0 16px;font-size:14px;font-weight:600;position:fixed;left:12px}.input-bar{padding:8px 10px;padding-bottom:calc(8px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid #e5e7eb;flex-shrink:0;align-items:flex-end;gap:8px;display:flex}.input-bar textarea{resize:none;-webkit-appearance:none;-moz-appearance:none;-ms-appearance:none;appearance:none;background:#f8f9fb;border:1px solid #e5e7eb;border-radius:10px;outline:none;flex:1;min-width:0;min-height:38px;max-height:120px;padding:9px 12px;font-family:inherit;font-size:16px;line-height:1.4}.input-bar textarea:focus{background:#fff;border-color:#3b82f6}.input-bar button{color:#fff;cursor:pointer;-webkit-appearance:none;background:#3b82f6;border:none;border-radius:10px;flex-shrink:0;height:38px;padding:9px 18px;font-size:14px;font-weight:600}.input-bar .icon-btn{width:38px;padding:0;font-size:22px;line-height:38px}.input-bar button:disabled{opacity:.4;cursor:not-allowed}.input-bar button:not(:disabled):active{background:#2563eb}.attach-mask{z-index:20;background:rgba(15,23,42,.22);align-items:flex-end;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.attach-panel{width:100%;padding:10px 12px;padding-bottom:calc(10px + env(safe-area-inset-bottom));background:#fff;border-top-left-radius:12px;border-top-right-radius:12px;box-shadow:0 -8px 24px rgba(15,23,42,.16)}.attach-option,.attach-cancel{color:#1f2937;background:#f8fafc;border:0;border-radius:8px;width:100%;height:44px;font-family:inherit;font-size:16px}.attach-option{color:#2563eb;font-weight:600}.attach-cancel{margin-top:8px}.attach-option:active,.attach-cancel:active{background:#eef2f7}@media (max-width:360px){.chat-header{padding:8px 12px;padding-top:calc(8px + env(safe-area-inset-top));font-size:14px}.messages{padding:10px 8px 6px}.msg{gap:6px;margin-bottom:10px}.avatar{width:30px;height:30px;font-size:12px}.bubble-wrap{max-width:calc(100% - 38px)}.bubble{padding:8px 10px;font-size:14px}.guide-card{width:min(236px,100%);padding:7px}.guide-title{padding:0 3px 7px;font-size:12px}.guide-option{min-height:38px;padding:0 9px 0 10px;font-size:13px}.input-bar{padding:6px 8px;padding-bottom:calc(6px + env(safe-area-inset-bottom))}.input-bar textarea{min-height:34px;padding:7px 10px}.input-bar button{height:34px;padding:7px 14px}}