:root{color-scheme:light;--blue:#2276ff;--orange:#fc843a;--text:#202735;--muted:#8b929f;--line:#edf0f4;--background:#f6f7f9;--blue-soft:#edf4ff;--radius:16px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none;-webkit-text-size-adjust:100%}
*{box-sizing:border-box}body{margin:0;background:#edf0f4;color:var(--text);font-size:15px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button,a,textarea,select{outline-offset:4px}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--blue)}button{color:inherit}button svg{pointer-events:none}button{border:0}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.icon-definitions{position:absolute;width:0;height:0;overflow:hidden}.icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.app-shell{max-width:760px;margin:auto;height:100vh;height:100dvh;min-height:420px;background:var(--background);display:flex;flex-direction:column;position:relative;isolation:isolate;box-shadow:0 0 48px #20305009}.app-header{padding:0 16px;padding-top:env(safe-area-inset-top,0px);min-height:58px;display:grid;grid-template-columns:80px 1fr 80px;align-items:center;background:white;flex-shrink:0;z-index:2}.app-header h1{font-size:18px;letter-spacing:.5px;font-weight:600;line-height:58px;margin:0;text-align:center}.icon-button{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border-radius:10px;flex-shrink:0}.icon-button:hover{background:#f0f3f7}.back-button{margin-left:-8px;justify-self:start}.back-button .icon{width:25px;height:25px}.text-button{padding:8px 0;background:none;color:var(--blue);font-size:14px;font-weight:500}.text-button:hover{color:#155bce}.human-header{justify-self:end;font-size:15px}.preview-controls{display:flex;gap:12px;align-items:center;min-height:42px;padding:6px 20px;border-top:1px solid #f6f7f9;background:white;color:#8c94a3;font-size:11px;flex-shrink:0}.role-control{display:flex;background:#f3f5f8;padding:3px;border-radius:7px;gap:2px}.role-control button{min-width:62px;border-radius:5px;font-size:11px;line-height:24px;padding:0 9px;background:transparent;color:#788290}.role-control button[aria-pressed=true]{color:var(--blue);background:white;box-shadow:0 1px 4px #142b4d10}.role-control button:disabled{opacity:.55}.preview-label{margin-left:auto;color:#a2a8b4;font-size:10px}.demo-notice{display:flex;justify-content:center;align-items:center;gap:6px;min-height:34px;padding:7px 16px;background:#fff6ed;color:#b37b4c;font-size:11px;letter-spacing:.1px;flex-shrink:0}.demo-notice .icon{width:13px;height:13px}.load-error{display:flex;gap:12px;align-items:center;padding:9px 20px;background:#fff1ef;color:#b95146;font-size:12px;border-bottom:1px solid #f7dcd6;flex-shrink:0}.load-error span{flex:1}.load-error .text-button{font-size:12px;padding:3px 0;white-space:nowrap}.conversation{flex:1;overflow-y:auto;overscroll-behavior-y:contain;padding:26px 22px 20px;scroll-behavior:smooth;min-height:0;scrollbar-width:thin;scrollbar-color:#d7dde5 transparent}.welcome{padding:4px 0 6px}.assistant-avatar{width:34px;height:34px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--blue);background:white;border:1px solid #edf1f6;flex-shrink:0}.welcome-avatar{width:48px;height:48px;border-radius:17px;background:var(--blue);color:white;border:0;box-shadow:0 5px 12px #2276ff20;margin-bottom:16px}.welcome-avatar .icon{width:29px;height:29px;stroke-width:1.5}.welcome-heading{display:flex;align-items:center;gap:7px;font-size:12px;color:#7f8999;margin-bottom:8px}.tiny-tag{font-size:9px;padding:1px 5px;border-radius:4px;border:1px solid #dce2eb;color:#939ca9}.welcome h2{font-size:23px;letter-spacing:-.4px;line-height:1.5;font-weight:600;margin:0 0 8px}.welcome p{font-size:13px;line-height:1.8;color:#85909f;margin:0}.quick-questions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 4px}.quick-question{display:flex;align-items:center;gap:10px;padding:14px 12px;border:1px solid #e9edf3;border-radius:12px;background:white;text-align:left;min-height:53px;line-height:1.4;font-size:13px;transition:border-color .16s,background .16s}.quick-question:hover{border-color:#bcd5ff;background:#fcfdff}.quick-question .icon{width:19px;height:19px;color:var(--blue);stroke-width:1.6}.quick-question:nth-child(2n) .icon{color:var(--orange)}.quick-question span{flex:1}.quick-question .arrow{width:12px;height:12px;color:#c3cad5}.conversation-date{text-align:center;color:#b1b7c1;font-size:10px;padding:25px 0 18px;letter-spacing:.4px}.message-list{display:flex;flex-direction:column;gap:21px}.message-row{display:flex;align-items:flex-start;gap:9px;max-width:100%;animation:message-in .2s ease-out}.message-content{min-width:0;max-width:calc(100% - 43px)}.assistant-label{font-size:10px;color:#9ba3af;margin:0 0 6px 2px;line-height:16px}.message-bubble{background:white;border:1px solid #e9edf2;border-radius:3px 15px 15px 15px;padding:13px 15px;line-height:1.8;font-size:14px;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;min-width:54px}.message-row.user{justify-content:flex-end}.user .message-content{max-width:84%}.user .message-bubble{background:var(--blue);color:white;border-color:var(--blue);border-radius:15px 3px 15px 15px;padding:12px 15px}.message-sources{display:flex;gap:5px;flex-wrap:wrap;margin:8px 2px 0;color:#9ca4b1;font-size:10px;line-height:1.5}.source-chip{background:#eef1f5;color:#919aa8;padding:2px 6px;border-radius:4px}.message-actions{display:flex;flex-wrap:wrap;gap:7px;margin:9px 0 0}.message-action{background:white;border:1px solid #dce7fb;color:var(--blue);padding:7px 11px;border-radius:7px;font-size:12px;line-height:1.45;min-height:33px}.message-action:hover{background:var(--blue-soft)}.message-row.error .message-bubble{background:#fff9f5;border-color:#f8e6d8;color:#956f54;font-size:13px}.message-row.error .assistant-avatar{color:#c18a62}.message-pending .message-bubble{display:flex;align-items:center;gap:5px;height:44px;padding:15px 16px}.message-pending i{width:4px;height:4px;border-radius:50%;background:#a1b7d8;animation:dot-pulse 1s ease-in-out infinite}.message-pending i:nth-child(2){animation-delay:.15s}.message-pending i:nth-child(3){animation-delay:.3s}.order-summary{background:white;border:1px solid #e6ecf5;border-radius:12px;margin-top:10px;overflow:hidden;min-width:240px;max-width:100%}.order-summary-head{padding:11px 12px;border-bottom:1px solid #f0f2f6;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;font-weight:600}.status-tag{font-size:10px;font-weight:400;color:var(--blue);background:var(--blue-soft);padding:3px 7px;border-radius:5px;white-space:nowrap}.order-summary dl{padding:10px 12px;margin:0;display:grid;grid-template-columns:54px 1fr;gap:8px;font-size:11px;line-height:1.7}.order-summary dt{color:#9aa3b1}.order-summary dd{margin:0;color:#596475;overflow-wrap:anywhere}.order-summary .order-amount{color:#f17e37;font-weight:600}.order-summary-note{font-size:9px;color:#a3aab4;background:#fafbfc;padding:6px 12px}.composer-area{background:white;border-top:1px solid #e9edf3;padding:0 18px calc(9px + env(safe-area-inset-bottom,0px));flex-shrink:0;z-index:2}.composer-tools{display:flex;align-items:center;gap:6px;padding:11px 0 9px;overflow-x:auto;scrollbar-width:none}.composer-tools::-webkit-scrollbar{display:none}.tool-button{display:flex;align-items:center;gap:5px;white-space:nowrap;font-size:11px;color:#7a8597;background:#f6f8fb;border:1px solid #eef1f5;border-radius:7px;padding:6px 9px;min-height:31px}.tool-button .icon{width:14px;height:14px;stroke-width:1.6}.tool-button:hover{color:var(--blue);border-color:#d5e4ff}.message-form{display:flex;gap:9px;align-items:flex-end}.message-form textarea{flex:1;min-width:0;resize:none;max-height:112px;min-height:44px;padding:12px 13px;border:1px solid #e8edf4;background:#f6f8fb;border-radius:11px;color:var(--text);line-height:20px;font-size:14px;outline-offset:2px}.message-form textarea::placeholder{color:#b0b7c2}.message-form textarea:focus{border-color:#a8c9ff;background:#fff}.message-form textarea:disabled{opacity:.65}.send-button{height:44px;width:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:var(--blue);color:white;transition:background .15s;flex-shrink:0}.send-button .icon{width:23px;height:23px;stroke-width:2}.send-button:disabled{background:#e8edf5;color:#bbc5d4}.send-button:not(:disabled):hover{background:#1264e7}.composer-caption{color:#b0b8c4;text-align:center;font-size:9px;margin:8px 0 0;line-height:1.5;letter-spacing:.15px}.selected-order{display:flex;align-items:center;gap:8px;padding:9px 0 8px;border-bottom:1px solid #f1f3f6;color:var(--blue)}.selected-order>.icon{width:17px;height:17px}.selected-order>div{display:flex;flex:1;min-width:0;gap:6px;align-items:center;font-size:10px}.selected-order span{color:#8a96a8;flex-shrink:0}.selected-order strong{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.selected-order .icon-button{width:25px;height:25px;color:#9da6b5}.selected-order .icon-button .icon{width:14px;height:14px}
.sheet-dialog{border:0;padding:0;color:var(--text);border-radius:21px;width:min(520px,calc(100% - 36px));max-height:calc(100dvh - 60px);background:white;box-shadow:0 24px 90px #0d22402e;overscroll-behavior:contain}.sheet-dialog::backdrop{background:#14223866;backdrop-filter:blur(2px)}.sheet-header{display:flex;gap:12px;align-items:flex-start;justify-content:space-between;padding:23px 22px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:white;z-index:1}.sheet-header h2{margin:0 0 8px;font-size:18px;font-weight:600;line-height:1.5}.sheet-header p{font-size:11px;color:#929aa7;line-height:1.7;margin:0}.sheet-header>.icon-button{margin:-5px -8px 0 0;color:#929baa}.sheet-header>.icon-button .icon{width:20px;height:20px}.sheet-body{padding:19px 22px 22px}.orders-list{display:flex;flex-direction:column;gap:11px}.order-choice{padding:14px;border-radius:12px;border:1px solid #e5ebf4;background:white;text-align:left;display:block;width:100%}.order-choice:hover{border-color:#aecbfb;background:#fcfdff}.order-choice-top{display:flex;gap:10px;justify-content:space-between;align-items:center;font-size:13px;font-weight:500;line-height:1.6}.order-choice-id{font-size:10px;color:#9ba4b1;margin:7px 0}.order-choice-bottom{font-size:11px;display:flex;align-items:center;gap:10px;justify-content:space-between;color:#8a94a3;line-height:1.6}.choice-action{color:var(--blue);display:flex;align-items:center;gap:3px;white-space:nowrap}.choice-action .icon{width:12px;height:12px}.sheet-note{font-size:10px;line-height:1.7;color:#a2aab5;margin:15px 0 0}.empty-state{font-size:13px;color:#98a1ae;text-align:center;padding:26px 10px;line-height:1.8}.faq-list{display:flex;flex-direction:column}.faq-choice{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 0;border-bottom:1px solid #f0f3f6;background:white;font-size:14px;text-align:left;line-height:1.6}.faq-choice:first-child{padding-top:3px}.faq-choice:last-child{border-bottom:0}.faq-choice .icon{width:15px;height:15px;color:#bac3cf}.human-demo{display:flex;align-items:flex-start;gap:7px;background:#fff7ef;color:#b4845b;padding:11px 12px;font-size:10px;line-height:1.8;border-radius:8px;margin-bottom:19px}.human-demo .icon{width:14px;height:14px;margin-top:2px}.ticket-form{display:flex;flex-direction:column}.ticket-form label{font-size:12px;font-weight:500;color:#505c6d;margin:0 0 8px;display:flex;gap:7px;align-items:center}.optional{font-size:10px;font-weight:400;color:#adb4bf}.ticket-form select,.ticket-form textarea{width:100%;border:1px solid #e5eaf1;background:#f8f9fb;border-radius:9px;padding:12px;font-size:13px;color:#4b576a;margin-bottom:17px;line-height:1.6}.ticket-form select{min-height:44px}.ticket-form textarea{resize:vertical;min-height:115px;margin-bottom:0}.ticket-form textarea::placeholder{color:#a8b0bd;font-size:12px}.field-help{font-size:10px;color:#a2aab7;line-height:1.8;margin:9px 0 17px}.field-error{font-size:11px;line-height:1.7;background:#fff2ef;padding:10px;border-radius:7px;color:#b7574a;margin:0 0 12px}.primary-button{display:flex;align-items:center;justify-content:center;width:100%;background:var(--blue);color:white;min-height:46px;line-height:1.6;padding:10px 15px;font-size:14px;font-weight:500;border-radius:10px}.primary-button:disabled{opacity:.55}.primary-button:not(:disabled):hover{background:#1264e7}.ticket-success{text-align:center;padding:5px 0 6px}.success-symbol{width:48px;height:48px;border-radius:50%;background:var(--blue-soft);color:var(--blue);display:flex;justify-content:center;align-items:center;margin:0 auto 13px}.success-symbol .icon{width:25px;height:25px;stroke-width:2}.ticket-success h3{font-size:18px;margin:0 0 13px;font-weight:600}.ticket-success p:not(.field-help){color:#8d97a6;font-size:11px}.ticket-success strong{color:#556174;font-weight:500;overflow-wrap:anywhere}.ticket-success .status-tag{display:inline-block;margin:3px 0 4px}.ticket-history{border-top:1px solid #edf0f5;margin-top:23px;padding-top:17px}.ticket-history summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:12px;color:#7c8798;list-style:none;padding:2px 0 9px}.ticket-history summary::-webkit-details-marker{display:none}.ticket-history summary:after{content:'展开';color:#a6afbc;font-size:10px;margin-left:10px}.ticket-history[open] summary:after{content:'收起'}.ticket-history summary span{margin-left:auto;border-radius:5px;min-width:20px;text-align:center;font-size:10px;background:#f0f3f8;color:#8997aa;line-height:20px}.ticket-item{border:1px solid #e8edf4;border-radius:10px;padding:12px;margin-top:9px;font-size:11px}.ticket-item-head{display:flex;justify-content:space-between;gap:9px;align-items:center;color:#78869a;font-size:10px}.ticket-item p{font-size:12px;line-height:1.7;margin:10px 0 8px;white-space:pre-wrap;overflow-wrap:anywhere;color:#5e6b7e}.ticket-item small{color:#a4aeba;font-size:10px}.phone-link{display:flex;align-items:center;gap:7px;padding:18px 0 0;margin-top:17px;border-top:1px solid #edf0f5;font-size:11px;color:#9aa3b1}.phone-link>.icon{width:15px;height:15px}.phone-link strong{font-size:13px;font-weight:500;color:#58677e;margin-left:auto}.phone-link .icon:last-child{width:12px;height:12px;color:#b5becb}.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(150px + env(safe-area-inset-bottom,0px));background:#263247ec;color:white;box-shadow:0 4px 24px #172c4b20;border-radius:10px;padding:12px 16px;font-size:12px;max-width:calc(100% - 48px);width:max-content;line-height:1.7;text-align:center;z-index:9;pointer-events:none}body[data-embedded="true"] .preview-controls{display:none}
@keyframes message-in{from{transform:translateY(5px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes dot-pulse{0%,60%,100%{opacity:.35}30%{opacity:1}}
@media(min-width:800px){body{padding:28px 0}.app-shell{height:calc(100vh - 56px);height:calc(100dvh - 56px);border-radius:20px;overflow:hidden;border:1px solid #e2e8f0;max-width:720px}.conversation{padding:30px 34px 25px}.welcome{padding-top:2px}.welcome-avatar{margin-bottom:18px}.welcome h2{font-size:25px}.quick-questions{max-width:490px;margin-top:24px;gap:11px}.quick-question{padding:15px}.composer-area{padding-left:26px;padding-right:26px}.app-header{padding-left:25px;padding-right:25px}.preview-controls{padding-left:29px;padding-right:29px}.message-content{max-width:min(520px,calc(100% - 43px))}.message-row.user .message-content{max-width:78%}.composer-caption{font-size:10px}.conversation-date{padding-top:29px}.demo-notice{font-size:11px}}
@media(max-width:480px){body{background:var(--background)}.conversation{padding:23px 18px 20px}.welcome h2{font-size:22px}.welcome-avatar{width:45px;height:45px;border-radius:16px;margin-bottom:15px}.welcome-avatar .icon{width:27px;height:27px}.quick-questions{gap:9px;margin-top:21px}.quick-question{font-size:12px;gap:8px;padding:13px 10px;min-height:52px}.quick-question>.icon{width:17px;height:17px}.quick-question .arrow{width:11px;height:11px}.sheet-dialog{position:fixed;bottom:0;left:0;right:0;margin:0;width:100%;max-width:none;border-radius:22px 22px 0 0;max-height:88dvh;padding-bottom:env(safe-area-inset-bottom,0px)}.sheet-header{padding:22px 20px 17px}.sheet-body{padding:18px 20px 22px}.message-content{max-width:calc(100% - 40px)}.message-bubble{font-size:14px;padding:12px 13px}.message-row{gap:7px}.assistant-avatar:not(.welcome-avatar){width:33px;height:33px;border-radius:11px}.assistant-avatar:not(.welcome-avatar)>.icon{width:20px;height:20px}.order-summary{min-width:0;width:100%}.order-summary dl{grid-template-columns:48px 1fr;font-size:10px}.selected-order>div{display:block}.selected-order strong{display:block;margin-top:2px}.composer-area{padding-left:15px;padding-right:15px}.composer-tools{gap:6px}.tool-button{font-size:10px;padding:6px 8px}.message-form textarea{font-size:16px;line-height:21px;padding-top:11px;padding-bottom:11px;min-height:45px}.send-button{width:45px;height:45px}.preview-controls{padding-left:18px;padding-right:18px;gap:9px}.app-header h1{line-height:55px}.app-header{min-height:55px}.human-header{font-size:14px}}
@media(max-width:350px){.conversation{padding-left:13px;padding-right:13px}.quick-question{gap:6px;padding:12px 8px;font-size:11px}.quick-question .arrow{display:none}.welcome h2{font-size:20px}.welcome p{font-size:12px}.preview-label{display:none}.tool-button{font-size:9px}.composer-tools{gap:5px}.message-bubble{font-size:13px}.demo-notice{font-size:10px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;scroll-behavior:auto!important;transition:none!important}}

/* Keep the composer reachable when an iOS keyboard changes the visual viewport. */
.app-shell{min-height:0;height:var(--viewport-height,100dvh)}
.icon-button{width:44px;height:44px}
.human-header{min-height:44px}
.tool-button{min-height:38px}
.message-action{min-height:38px}
.selected-order .icon-button{width:36px;height:36px}
.sheet-dialog{max-height:calc(var(--viewport-height,100dvh) - 50px)}
@media(min-width:800px){.app-shell{height:calc(var(--viewport-height,100dvh) - 56px)}}
@media(max-width:480px){.sheet-dialog{max-height:calc(var(--viewport-height,100dvh) - 30px)}}
.dialog-backdrop{position:fixed;inset:0;background:#17263b55;z-index:20}.sheet-dialog.dialog-fallback{display:block;position:fixed;z-index:21;top:50%;left:50%;right:auto;bottom:auto;transform:translate(-50%,-50%);margin:0;overflow:auto}@media(max-width:480px){.sheet-dialog.dialog-fallback{top:auto;bottom:0;left:0;right:0;transform:none}}