Fix liuyao UX: CSS coins, region auto-select, and clearer AI flow.

Replace missing coin images with CSS 3D coins, auto-select city on province change, expand Shandong cities, and improve AI interpretation prompts after six casts.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/coin.tsx

@@ -1,6 +1,5 @@
 import React, { useEffect, useState } from "react";
 import clsx from "clsx";
-import Image from "next/image";
 
 const rotationDuration = 3800;
 const bezier = "cubic-bezier(0.645,0.045,0.355,1)";
@@ -8,21 +7,21 @@ const bezier = "cubic-bezier(0.645,0.045,0.355,1)";
 function Coin(props: {
   frontList: boolean[];
   rotation: boolean;
-  onTransitionEnd: any;
+  onTransitionEnd: () => void;
 }) {
   const [lastFront, setLastFront] = useState(props.frontList);
 
-  useEffect(function () {
+  useEffect(() => {
     if (!props.rotation) {
       return;
     }
 
-    let id = setTimeout(function () {
+    const id = setTimeout(() => {
       setLastFront(props.frontList);
       props.onTransitionEnd();
     }, rotationDuration);
     return () => clearTimeout(id);
-  });
+  }, [props.rotation, props.frontList, props.onTransitionEnd]);
 
   return (
     <div className="flex w-full max-w-md justify-around rounded-md border bg-secondary p-4 shadow dark:border-0 dark:shadow-none sm:p-6">
@@ -38,50 +37,55 @@ function Coin(props: {
   );
 }
 
+function CoinFace({ side }: { side: "front" | "back" }) {
+  const isFront = side === "front";
+  return (
+    <div
+      className={clsx(
+        "absolute inset-0 flex items-center justify-center rounded-full border-[3px] shadow-inner",
+        isFront
+          ? "border-amber-500 bg-gradient-to-br from-amber-200 to-amber-400 text-amber-950"
+          : "border-stone-500 bg-gradient-to-br from-stone-300 to-stone-500 text-stone-800",
+      )}
+      style={{
+        backfaceVisibility: "hidden",
+        transform: isFront ? undefined : "rotateY(180deg)",
+      }}
+    >
+      <span className="select-none text-lg font-bold sm:text-xl">
+        {isFront ? "正" : "反"}
+      </span>
+    </div>
+  );
+}
+
 function CoinItem(props: {
   front: boolean;
   lastFront: boolean;
   rotation: boolean;
-  onTransitionEnd?: any;
 }) {
   let animate = "";
   if (props.rotation) {
-    // animate-[coin-front-front_3.8s_cubic-bezier(0.645,0.045,0.355,1)]
-    // animate-[coin-front-back_3.8s_cubic-bezier(0.645,0.045,0.355,1)]
-    // animate-[coin-back-front_3.8s_cubic-bezier(0.645,0.045,0.355,1)]
-    // animate-[coin-back-back_3.8s_cubic-bezier(0.645,0.045,0.355,1)]
     animate = `animate-[coin-${getFront(props.lastFront)}-${getFront(
       props.front,
     )}_${rotationDuration / 1000}s_${bezier}]`;
   }
+
   return (
+    <div
+      className="h-16 w-16 sm:h-20 sm:w-20"
+      style={{ perspective: "800px" }}
+    >
       <div
         style={{
           transform: `rotateY(${props.front ? 0 : 180}deg)`,
           transformStyle: "preserve-3d",
-        transformOrigin: "50% 50% -0.5px",
         }}
-      className={clsx("h-16 w-16 sm:h-20 sm:w-20", animate)}
+        className={clsx("relative h-full w-full", animate)}
       >
-      <Image
+        <CoinFace side="front" />
-        width={0}
+        <CoinFace side="back" />
-        height={0}
+      </div>
-        sizes="100vw"
-        draggable={false}
-        className="absolute w-full"
-        src="/img/head.webp"
-        alt="coin"
-      />
-      <Image
-        width={0}
-        height={0}
-        sizes="100vw"
-        draggable={false}
-        className="absolute h-full w-full"
-        style={{ transform: "translateZ(-1px)" }}
-        src="/img/tail.webp"
-        alt="coin"
-      />
     </div>
   );
 }

components/modes/liuyao-form.tsx

@@ -1,8 +1,8 @@
 "use client";
 
-import { useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import { readStreamableValue } from "ai/rsc";
-import { Compass, ListRestart } from "lucide-react";
+import { BrainCircuit, ListRestart } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { Textarea } from "@/components/ui/textarea";
 import Result from "@/components/result";
@@ -35,18 +35,26 @@ export default function LiuyaoForm() {
   const [isLoading, setIsLoading] = useState(false);
   const [showAi, setShowAi] = useState(false);
 
+  const actionRef = useRef<HTMLDivElement>(null);
+
   const location = useRegionLocation(provinceCode, cityCode);
   const formReady = question.trim() !== "" && location !== null;
 
+  useEffect(() => {
+    if (guaData && actionRef.current) {
+      actionRef.current.scrollIntoView({ behavior: "smooth", block: "nearest" });
+    }
+  }, [guaData]);
+
   function validate(): string | null {
     if (!question.trim()) {
       return "请输入问事";
     }
     if (!location) {
-      return "请选择起卦地域";
+      return "请选择起卦省份";
     }
     if (!guaData) {
-      return "请先完成起卦（线上摇卦或线下录入）";
+      return "请先完成 6 次起卦（线上摇卦或线下录入）";
     }
     return null;
   }
@@ -115,6 +123,7 @@ export default function LiuyaoForm() {
     setGuaData(data);
     setShowAi(false);
     setCompletion("");
+    setError("");
   }
 
   return (
@@ -197,16 +206,25 @@ export default function LiuyaoForm() {
         />
 
         {guaData && (
-          <div className="rounded-lg border bg-card p-4">
+          <div className="space-y-3 rounded-lg border border-primary/30 bg-primary/5 p-4">
+            <p className="text-sm font-medium text-primary">
+              起卦完成 · 请点击下方「AI 解读」
+            </p>
             <Result {...guaData.result} />
           </div>
         )}
 
-        {error && !showAi && (
+        {!guaData && formReady && castMode === "online" && (
+          <p className="text-center text-xs text-muted-foreground">
+            线上模式将自动摇卦 6 次，完成后出现 AI 解读按钮
+          </p>
+        )}
+
+        {error && (
           <p className="text-sm text-destructive">{error}</p>
         )}
 
-        <div className="flex gap-2">
+        <div ref={actionRef} className="flex gap-2">
           <Button variant="outline" onClick={handleReset} className="flex-1">
             <ListRestart size={16} className="mr-1" />
             重来
@@ -216,8 +234,8 @@ export default function LiuyaoForm() {
             disabled={!guaData || isLoading}
             className="flex-1"
           >
-            <Compass size={16} className="mr-1" />
+            <BrainCircuit size={16} className="mr-1" />
-            测算
+            AI 解读
           </Button>
         </div>
       </div>

components/shared/hexagram-input.tsx

@@ -191,9 +191,14 @@ export default function HexagramInput({
         <div className="flex flex-col items-center gap-3 sm:flex-row">
           <Hexagram list={hexagramList} />
           {complete && (
+            <>
+              <p className="text-sm text-muted-foreground sm:max-w-[10rem]">
+                六爻已齐，请在下方点击「AI 解读」
+              </p>
               <Button size="sm" variant="outline" onClick={handleReset}>
                 重新起卦
               </Button>
+            </>
           )}
         </div>
       )}

components/shared/region-select.tsx

@@ -1,6 +1,10 @@
 "use client";
 
-import { getProvinces, getCities, getRegionLocation } from "@/lib/data/regions";
+import {
+  getProvinces,
+  getCities,
+  getRegionLocation,
+} from "@/lib/data/regions";
 
 interface RegionSelectProps {
   provinceCode: string;
@@ -8,6 +12,7 @@ interface RegionSelectProps {
   onProvinceChange: (code: string) => void;
   onCityChange: (code: string) => void;
   label?: string;
+  cityOptional?: boolean;
 }
 
 export default function RegionSelect({
@@ -16,9 +21,23 @@ export default function RegionSelect({
   onProvinceChange,
   onCityChange,
   label = "出生地域",
+  cityOptional = true,
 }: RegionSelectProps) {
   const provinces = getProvinces();
   const cities = provinceCode ? getCities(provinceCode) : [];
+  const location = provinceCode
+    ? getRegionLocation(provinceCode, cityCode)
+    : null;
+
+  function handleProvinceChange(code: string) {
+    onProvinceChange(code);
+    if (!code) {
+      onCityChange("");
+      return;
+    }
+    const list = getCities(code);
+    onCityChange(list[0]?.code ?? "");
+  }
 
   return (
     <div className="space-y-2">
@@ -27,10 +46,7 @@ export default function RegionSelect({
         <select
           className="rounded-md border bg-background px-3 py-2 text-sm"
           value={provinceCode}
-          onChange={(e) => {
+          onChange={(e) => handleProvinceChange(e.target.value)}
-            onProvinceChange(e.target.value);
-            onCityChange("");
-          }}
         >
           <option value="">选择省份</option>
           {provinces.map((p) => (
@@ -40,12 +56,14 @@ export default function RegionSelect({
           ))}
         </select>
         <select
-          className="rounded-md border bg-background px-3 py-2 text-sm"
+          className="rounded-md border bg-background px-3 py-2 text-sm disabled:opacity-50"
           value={cityCode}
           onChange={(e) => onCityChange(e.target.value)}
-          disabled={!provinceCode}
+          disabled={!provinceCode || cities.length === 0}
         >
-          <option value="">选择城市/区县</option>
+          <option value="">
+            {cities.length === 0 ? "该省暂无下级城市" : "选择城市"}
+          </option>
           {cities.map((c) => (
             <option key={c.code} value={c.code}>
               {c.name}
@@ -53,6 +71,12 @@ export default function RegionSelect({
           ))}
         </select>
       </div>
+      {cityOptional && provinceCode && (
+        <p className="text-xs text-muted-foreground">
+          城市可不选，默认使用省份经度；已选：
+          {location ? `${location.name}（${location.longitude}°）` : "—"}
+        </p>
+      )}
     </div>
   );
 }

lib/data/regions.json

@@ -73,7 +73,11 @@
     "longitude": 117.0009,
     "children": {
       "370100": { "name": "济南市", "longitude": 117.1205 },
-      "370200": { "name": "青岛市", "longitude": 120.3826 }
+      "370200": { "name": "青岛市", "longitude": 120.3826 },
+      "370300": { "name": "淄博市", "longitude": 118.0550 },
+      "370600": { "name": "烟台市", "longitude": 121.4479 },
+      "370700": { "name": "潍坊市", "longitude": 119.1619 },
+      "371300": { "name": "临沂市", "longitude": 118.3565 }
     }
   },
   "430000": {

lib/data/regions.ts

@@ -11,10 +11,12 @@ export type RegionsData = Record<string, RegionNode>;
 export const regions = regionsData as RegionsData;
 
 export function getProvinces(): { code: string; name: string }[] {
-  return Object.entries(regions).map(([code, node]) => ({
+  return Object.entries(regions)
+    .map(([code, node]) => ({
       code,
       name: node.name,
-  }));
+    }))
+    .sort((a, b) => a.name.localeCompare(b.name, "zh-CN"));
 }
 
 export function getCities(provinceCode: string): { code: string; name: string }[] {
@@ -22,10 +24,12 @@ export function getCities(provinceCode: string): { code: string; name: string }[
   if (!province?.children) {
     return [];
   }
-  return Object.entries(province.children).map(([code, node]) => ({
+  return Object.entries(province.children)
+    .map(([code, node]) => ({
       code,
       name: node.name,
-  }));
+    }))
+    .sort((a, b) => a.name.localeCompare(b.name, "zh-CN"));
 }
 
 export function getRegionLocation(