diff --git a/templates/radar_guangzhou.html b/templates/radar_guangzhou.html
index b6be512..baec20d 100644
--- a/templates/radar_guangzhou.html
+++ b/templates/radar_guangzhou.html
@@ -103,7 +103,7 @@
   let gTileValues = null, gXs = null, gYs = null;
   let gWindFromDeg = null, gWindSpeedMS = null;
   let gTimes = [];
-  let gCurrentIdx = -1; // 在 gTimes 中的索引（倒序：0=最新）
+  let gCurrentIdx = -1;
 
   function toRad(d){ return d * Math.PI / 180; }
   function toDeg(r){ return r * 180 / Math.PI; }
@@ -172,14 +172,12 @@
     document.getElementById('east').textContent = fmt5(t.east);
     document.getElementById('north').textContent = fmt5(t.north);
     document.getElementById('res').textContent = fmt5(t.res_deg);
-    // 标题时间与索引同步
     document.getElementById('titleDt').textContent = `（${t.dt}）`;
     const selBox = document.getElementById('timeSelect');
     for(let i=0;i<selBox.options.length;i++){ if(selBox.options[i].value===t.dt){ selBox.selectedIndex=i; break; } }
     gCurrentIdx = gTimes.indexOf(t.dt);
     updateCountAndButtons(); updateSlider();
 
-    // x/y 等角坐标
     const w=t.width,h=t.height; gTileValues=t.values;
     const xs=new Array(w), ys=new Array(h);
     const stepX=(t.east-t.west)/w, stepY=(t.north-t.south)/h;
@@ -187,7 +185,6 @@
     for(let j=0;j<h;j++){ ys[j]=t.south+(j+0.5)*stepY; }
     gXs=xs; gYs=ys;
 
-    // 色带
     const colors=["#0000FF","#00BFFF","#00FFFF","#7FFFD4","#7CFC00","#ADFF2F","#FFFF00","#FFD700","#FFA500","#FF8C00","#FF4500","#FF0000","#DC143C","#C71585","#8B008B"];
     const scale=[]; for(let i=0;i<colors.length;i++){ const tpos=colors.length===1?0:i/(colors.length-1); scale.push([tpos,colors[i]]); }
     const zBins=[]; const custom=[];
@@ -206,7 +203,6 @@
       hovertemplate:'lon=%{x:.3f}, lat=%{y:.3f}<br>dBZ=%{customdata[2]:.1f}<extra></extra>' };
     const layout={ autosize:true, margin:{l:40,r:8,t:8,b:90}, xaxis:{title:'经度',tickformat:'.2f',zeroline:false,constrain:'domain',automargin:true},
       yaxis:{title:{text:'纬度',standoff:12},tickformat:'.2f',zeroline:false,scaleanchor:'x',scaleratio:1,constrain:'domain',automargin:true} };
-    // 扇形覆盖
     const data=[heatTrace];
     if(gWindFromDeg!==null && gWindSpeedMS>0){
       const half=30, samples=64, start=gWindFromDeg-half, end=gWindFromDeg+half, rangeM=gWindSpeedMS*3*3600;
@@ -219,7 +215,6 @@
     Plotly.newPlot(plotEl, data, layout, {responsive:true, displayModeBar:false}).then(()=>{ const s=plotEl.clientWidth; Plotly.relayout(plotEl,{height:s}); });
     window.addEventListener('resize',()=>{ const s=plotEl.clientWidth; Plotly.relayout(plotEl,{height:s}); Plotly.Plots.resize(plotEl); });
 
-    // 与瓦片时间对齐的10分钟气象
     try{
       const base = forcedDt ? new Date(forcedDt.replace(/-/g,'/')) : new Date(t.dt.replace(/-/g,'/'));
       const ceil10=new Date(base); const m=base.getMinutes(); const up=(Math.floor(m/10)*10+10)%60; ceil10.setMinutes(up,0,0); if(up===0){ ceil10.setHours(base.getHours()+1); }
@@ -286,7 +281,6 @@
     try{
       if(!gTileValues || !gXs || !gYs || gWindSpeedMS===null) return;
       const R=6371000; const rangeM=gWindSpeedMS*3*3600;
-      // 以站点为中心的正方形（3小时可达半径），作为“细节放大”裁剪窗口
       const dLat=(rangeM/R)*(180/Math.PI);
       const dLon=(rangeM/(R*Math.cos(toRad(ST_LAT))))*(180/Math.PI);
       const latMin=ST_LAT-dLat, latMax=ST_LAT+dLat, lonMin=ST_LON-dLon, lonMax=ST_LON+dLon;
@@ -308,7 +302,6 @@
         colorbar:{orientation:'h',x:0.5,y:-0.12,xanchor:'center',yanchor:'top',len:0.8,thickness:16,title:{text:'dBZ',side:'bottom'},
           tickmode:'array',tickvals:Array.from({length:15},(_,i)=>i),ticktext:Array.from({length:15},(_,i)=>String(i*5))},
         hovertemplate:'lon=%{x:.3f}, lat=%{y:.3f}<br>dBZ=%{customdata[2]:.1f}<extra></extra>' }];
-      // 扇形覆盖（同样默认显示）
       if(gWindFromDeg!==null && gWindSpeedMS>0){
         const half=30, samples=64, start=gWindFromDeg-half, end=gWindFromDeg+half, rangeM=gWindSpeedMS*3*3600;
         const xsFan=[ST_LON], ysFan=[ST_LAT];
@@ -326,7 +319,6 @@
     }catch(e){ document.getElementById('squarePlot').innerHTML=`<div class="p-3 text-sm text-red-600 bg-red-50 border border-red-200 rounded">正方形热力图渲染失败：${e.message}</div>`; }
   }
 
-  // 启动加载：预填近3小时范围并填充时次
   (function initRange(){ const end=new Date(); const start=new Date(end.getTime()-3*3600*1000); document.getElementById('tsStart').value=fmtDTLocal(start); document.getElementById('tsEnd').value=fmtDTLocal(end); })();
   const startStr = fromDTLocalInput(document.getElementById('tsStart').value);
   const endStr = fromDTLocalInput(document.getElementById('tsEnd').value);
@@ -340,7 +332,7 @@
   });
   document.getElementById('tsQuery').addEventListener('click', async ()=>{ const s=fromDTLocalInput(document.getElementById('tsStart').value); const e=fromDTLocalInput(document.getElementById('tsEnd').value); await populateTimes(s,e); });
   function updateCountAndButtons(){
-    const N=gTimes.length; const k=gCurrentIdx>=0?(gCurrentIdx+1):0; document.getElementById('countInfo').textContent=`共${N}条数据，-${k-1}时刻`;
+    const N=gTimes.length; const k=gCurrentIdx>=0?(gCurrentIdx+1):0; document.getElementById('countInfo').textContent=`共${N}条数据，-${k-1}时次`;
     const prev=document.getElementById('btnPrev'); const next=document.getElementById('btnNext');
     prev.disabled = !(N>0 && gCurrentIdx>=0 && gCurrentIdx<N-1);
     next.disabled = !(N>0 && gCurrentIdx>0);
@@ -350,7 +342,7 @@
     const N = gTimes.length;
     slider.max = N > 0 ? String(N-1) : '0';
     if (N > 0 && gCurrentIdx >= 0) {
-      const sliderVal = (N - 1) - gCurrentIdx; // 值越大越新
+      const sliderVal = (N - 1) - gCurrentIdx;
       slider.value = String(sliderVal);
     }
     slider.disabled = N === 0;
@@ -365,7 +357,7 @@
     const N = gTimes.length; if (N === 0) return;
     const raw = parseInt(e.target.value, 10);
     const sliderVal = Math.max(0, Math.min(N-1, isNaN(raw)?0:raw));
-    const idx = (N - 1) - sliderVal; // 反向映射到数组索引（0=最新）
+    const idx = (N - 1) - sliderVal;
     if (idx === gCurrentIdx) return;
     gCurrentIdx = idx;
     const dt = gTimes[gCurrentIdx];
diff --git a/templates/radar_nanning.html b/templates/radar_nanning.html
index 1b0af73..3c161bd 100644
--- a/templates/radar_nanning.html
+++ b/templates/radar_nanning.html
@@ -87,7 +87,6 @@
                     <button id="btnNext" class="px-2 py-1 border rounded">下一时次</button>
                 </div>
             </div>
-            <!-- 居中滑动条，联动历史时次（0=最新，值越大越旧） -->
             <div class="w-full flex justify-center mb-2">
                 <input id="timeSlider" type="range" min="0" max="0" value="0" step="1" class="slider slider-horizontal w-64" />
             </div>
@@ -101,9 +100,9 @@
 
     <script>
         let gTileValues = null, gXs = null, gYs = null;
-        let gWindFromDeg = null, gWindSpeedMS = null; // 来风方向（度，0=北，顺时针），风速 m/s
+        let gWindFromDeg = null, gWindSpeedMS = null;
         let gTimes = [];
-        let gCurrentIdx = -1; // 在 gTimes 中的索引（倒序：0=最新）
+        let gCurrentIdx = -1;
 
         async function loadLatestTile() {
             const res = await fetch('/api/radar/latest?z=7&y=40&x=102');
@@ -125,10 +124,8 @@
             return `${dt.getFullYear()}-${pad(dt.getMonth()+1)}-${pad(dt.getDate())}T${pad(dt.getHours())}:${pad(dt.getMinutes())}`;
         }
         function fromDTLocalInput(s){
-            // s like 'YYYY-MM-DDTHH:MM'
             if(!s) return null;
-            const t = new Date(s.replace('T','-').replace(/-/g,'/')); // iOS safe parse later
-            // We will manually format to server expected 'YYYY-MM-DD HH:MM:SS'
+            const t = new Date(s.replace('T','-').replace(/-/g,'/'));
             const pad=(n)=> String(n).padStart(2,'0');
             return `${t.getFullYear()}-${pad(t.getMonth()+1)}-${pad(t.getDate())} ${pad(t.getHours())}:${pad(t.getMinutes())}:00`;
         }
@@ -162,7 +159,6 @@
         async function renderTile(t, forcedDt) {
             const fmt5 = (n) => Number(n).toFixed(5);
 
-            // 填充元信息
             document.getElementById('dt').textContent = t.dt;
             document.getElementById('z').textContent = t.z;
             document.getElementById('y').textContent = t.y;
@@ -173,7 +169,6 @@
             document.getElementById('east').textContent = fmt5(t.east);
             document.getElementById('north').textContent = fmt5(t.north);
             document.getElementById('res').textContent = fmt5(t.res_deg);
-            // 标题时间与索引同步
             document.getElementById('titleDt').textContent = `（${t.dt}）`;
             const selBox = document.getElementById('timeSelect');
             for (let i = 0; i < selBox.options.length; i++) {
@@ -182,7 +177,6 @@
             gCurrentIdx = gTimes.indexOf(t.dt);
             updateCountAndButtons();
 
-            // Plotly 热力图（离散 5 dBZ 色带）
             const colors = [
                 "#0000F6","#01A0F6","#00ECEC","#01FF00","#00C800",
                 "#019000","#FFFF00","#E7C000","#FF9000","#FF0000",
@@ -192,17 +186,14 @@
             const resDeg = t.res_deg;
             const west = t.west, south = t.south, north = t.north;
 
-            // 经纬度轴（像元中心）。x 自西向东递增；y 自南向北递增（保证上=北，下=南）。
             const xs = new Array(w);
             for (let c = 0; c < w; c++) xs[c] = west + (c + 0.5) * resDeg;
             const ys = new Array(h);
             for (let r = 0; r < h; r++) ys[r] = south + (r + 0.5) * resDeg;
 
-            // 缓存用于后续扇形计算
             gTileValues = t.values;
             gXs = xs; gYs = ys;
 
-            // 将 dBZ 离散到 0..14 档，并保留原值用于 hover
             const zBins = new Array(h);
             const custom = new Array(h);
             for (let r = 0; r < h; r++) {
@@ -218,7 +209,6 @@
                 zBins[r] = rowBins; custom[r] = rowCustom;
             }
 
-            // 颜色刻度（0..14 归一化到 0..1）
             const scale = [];
             for (let i = 0; i < colors.length; i++) {
                 const tpos = colors.length === 1 ? 0 : i / (colors.length - 1);
@@ -252,11 +242,10 @@
                                'dBZ=%{customdata[2]:.1f}<extra></extra>'
             }];
 
-            // 叠加“来风±30°扇形（3小时可达半径）”覆盖层（默认显示、无图例项）到主图
             if (gWindFromDeg !== null && gWindSpeedMS > 0) {
                 const stLat = 23.097234, stLon = 108.715433;
-                const half = 30; // 半开角
-                const samples = 64; // 弧线采样点
+                const half = 30;
+                const samples = 64;
                 const start = gWindFromDeg - half;
                 const end = gWindFromDeg + half;
                 const rangeM = gWindSpeedMS * 3 * 3600;
@@ -281,13 +270,11 @@
                 autosize: true,
                 margin: {l:40, r:8, t:8, b:90},
                 xaxis: {title: '经度', tickformat: '.2f', zeroline: false, constrain: 'domain', automargin: true},
-                // y 轴默认从小到大（下→上），配合 ys 自南到北递增，实现“上=北，下=南”
                 yaxis: {title: {text: '纬度', standoff: 12}, tickformat: '.2f', zeroline: false, scaleanchor: 'x', scaleratio: 1, constrain: 'domain', automargin: true},
             };
 
             const plotEl = document.getElementById('radarPlot');
             Plotly.newPlot(plotEl, data, layout, {responsive: true, displayModeBar: false}).then(() => {
-                // 强制按照容器宽度设置高度，保持方形
                 const size = plotEl.clientWidth;
                 Plotly.relayout(plotEl, {height: size});
             });
@@ -297,7 +284,6 @@
                 Plotly.Plots.resize(plotEl);
             });
 
-            // 同步加载与瓦片时间对应的10分钟气象（向上取整到10分）
             try {
                 const dt = forcedDt ? new Date(forcedDt.replace(/-/g,'/')) : new Date(t.dt.replace(/-/g,'/'));
                 const ceil10 = new Date(dt);
@@ -308,11 +294,9 @@
                 const pad = (n)=> n.toString().padStart(2,'0');
                 const dtStr = `${ceil10.getFullYear()}-${pad(ceil10.getMonth()+1)}-${pad(ceil10.getDate())} ${pad(ceil10.getHours())}:${pad(ceil10.getMinutes())}:00`;
                 await loadRealtimeAt(dtStr);
-                // 扇形计算 + 正方形裁剪热力图
                 maybeCalcSector();
                 maybePlotSquare();
             } catch (e) {
-                // 回退到最新
                 await loadRealtimeLatest();
                 maybeCalcSector();
                 maybePlotSquare();
@@ -339,8 +323,8 @@
             document.getElementById('rt_wd').textContent = f2(r.wind_direction);
             document.getElementById('rt_p').textContent = f2(r.pressure);
 
-            gWindFromDeg = Number(r.wind_direction); // 来风方向（度）
-            gWindSpeedMS = Number(r.wind_speed);      // m/s（后端已转好）
+            gWindFromDeg = Number(r.wind_direction);
+            gWindSpeedMS = Number(r.wind_speed);
         }
 
         async function loadRealtimeAt(dtStr) {
@@ -370,7 +354,7 @@
         function toRad(d){ return d * Math.PI / 180; }
         function toDeg(r){ return r * 180 / Math.PI; }
         function haversine(lat1, lon1, lat2, lon2){
-            const R = 6371000; // m
+            const R = 6371000;
             const dLat = toRad(lat2 - lat1);
             const dLon = toRad(lon2 - lon1);
             const a = Math.sin(dLat/2)**2 + Math.cos(toRad(lat1)) * Math.cos(toRad(lat2)) * Math.sin(dLon/2)**2;
@@ -382,15 +366,14 @@
             const y = Math.sin(Δλ) * Math.cos(φ2);
             const x = Math.cos(φ1)*Math.sin(φ2) - Math.sin(φ1)*Math.cos(φ2)*Math.cos(Δλ);
             let brng = toDeg(Math.atan2(y, x));
-            return (brng + 360) % 360; // 0..360, 0=北，顺时针
+            return (brng + 360) % 360;
         }
         function angDiff(a, b){
-            let d = ((a - b + 540) % 360) - 180; // -180..180
+            let d = ((a - b + 540) % 360) - 180;
             return Math.abs(d);
         }
-        // 前向大地解算：从(lat,lon)出发，沿方位角brgDeg，距离distM，求目的地经纬度
         function destPoint(lat, lon, brgDeg, distM){
-            const R = 6371000; // m
+            const R = 6371000;
             const δ = distM / R;
             const θ = toRad(brgDeg);
             const φ1 = toRad(lat);
@@ -402,19 +385,18 @@
             const y = Math.sin(θ) * sinδ * cosφ1;
             const x = cosδ - sinφ1 * sinφ2;
             const λ2 = λ1 + Math.atan2(y, x);
-            return { lat: toDeg(φ2), lon: ((toDeg(λ2) + 540) % 360) - 180 }; // 归一化到[-180,180)
+            return { lat: toDeg(φ2), lon: ((toDeg(λ2) + 540) % 360) - 180 };
         }
         function maybeCalcSector(){
             try{
                 if(!gTileValues || !gXs || !gYs || gWindFromDeg===null || gWindSpeedMS===null){
-                    return; // 等待数据就绪
+                    return;
                 }
-                // 站点（南宁雷达站经纬度）
                 const stLat = 23.097234, stLon = 108.715433;
-                const halfAngle = 30; // ±30°
-                const rangeM = gWindSpeedMS * 3 * 3600; // 三小时覆盖半径
+                const halfAngle = 30;
+                const rangeM = gWindSpeedMS * 3 * 3600;
 
-                let best = null; // {dist, lat, lon, dbz}
+                let best = null;
                 const h = gTileValues.length;
                 const w = gTileValues[0].length;
                 for(let r=0; r<h; r++){
@@ -423,12 +405,11 @@
                         const val = gTileValues[r][c];
                         if(val==null) continue;
                         const dbz = Number(val);
-                        if(!(dbz >= 40)) continue; // 门限
+                        if(!(dbz >= 40)) continue;
                         const lon = gXs[c];
                         const dist = haversine(stLat, stLon, lat, lon);
                         if(dist > rangeM) continue;
                         const brg = bearingDeg(stLat, stLon, lat, lon);
-                        // 以“来风方向”为扇形中心
                         if(angDiff(brg, gWindFromDeg) > halfAngle) continue;
                         if(!best || dist < best.dist){ best = {dist, lat, lon, dbz}; }
                     }
@@ -457,19 +438,16 @@
         function maybePlotSquare(){
             try{
                 if(!gTileValues || !gXs || !gYs || gWindSpeedMS===null){
-                    return; // 等待数据
+                    return;
                 }
-                // 常量与站点
-                const R = 6371000; // 地球半径（m）
+                const R = 6371000;
                 const stLat = 23.097234, stLon = 108.715433;
-                const rangeM = gWindSpeedMS * 3 * 3600; // 3小时
-                // 米->度（近似）：
+                const rangeM = gWindSpeedMS * 3 * 3600;
                 const dLat = (rangeM / R) * (180/Math.PI);
                 const dLon = (rangeM / (R * Math.cos(toRad(stLat)))) * (180/Math.PI);
                 const latMin = stLat - dLat, latMax = stLat + dLat;
                 const lonMin = stLon - dLon, lonMax = stLon + dLon;
 
-                // 定位索引范围（y从南到北递增, x从西到东递增）
                 const h = gYs.length, w = gXs.length;
                 let rStart = 0; while(rStart < h && gYs[rStart] < latMin) rStart++;
                 let rEnd = h-1; while(rEnd >= 0 && gYs[rEnd] > latMax) rEnd--;
@@ -484,7 +462,6 @@
                 const xs = gXs.slice(cStart, cEnd+1);
                 const ys = gYs.slice(rStart, rEnd+1);
 
-                // 离散到色带（与主图一致）
                 const colors = [
                     "#0000F6","#01A0F6","#00ECEC","#01FF00","#00C800",
                     "#019000","#FFFF00","#E7C000","#FF9000","#FF0000",
@@ -527,15 +504,13 @@
                     hovertemplate: 'lon=%{x:.3f}, lat=%{y:.3f}<br>dBZ=%{customdata[2]:.1f}<extra></extra>'
                 }];
 
-                // 叠加“来风±30°扇形（3小时可达半径）”覆盖层（默认显示、无图例项）
                 if (gWindFromDeg !== null && gWindSpeedMS > 0) {
-                    const half = 30; // 半开角
-                    const samples = 64; // 弧线采样点
+                    const half = 30;
+                    const samples = 64;
                     const start = gWindFromDeg - half;
                     const end = gWindFromDeg + half;
                     const xsFan = [];
                     const ysFan = [];
-                    // 从中心起点，沿弧线，再回到中心，闭合多边形
                     xsFan.push(stLon); ysFan.push(stLat);
                     for (let i = 0; i <= samples; i++) {
                         const θ = start + (end - start) * (i / samples);
@@ -556,7 +531,6 @@
                     xaxis: {title: '经度', tickformat: '.2f', zeroline: false, constrain: 'domain', automargin: true},
                     yaxis: {title: {text: '纬度', standoff: 12}, tickformat: '.2f', zeroline: false, scaleanchor: 'x', scaleratio: 1, constrain: 'domain', automargin: true},
                     shapes: [
-                        // 画出正方形边界（lonMin..lonMax, latMin..latMax）
                         {type:'rect', xref:'x', yref:'y', x0: lonMin, x1: lonMax, y0: latMin, y1: latMax, line: {color:'#111', width:1, dash:'dot'}, fillcolor:'rgba(0,0,0,0)'}
                     ]
                 };
@@ -576,8 +550,6 @@
             }
         }
 
-        // 初始化：加载最新瓦片、填充时间下拉（默认近3小时）、绑定事件
-        // 预填范围
         (function initRange(){
             const end = new Date();
             const start = new Date(end.getTime() - 3*3600*1000);
@@ -611,7 +583,7 @@
         function updateCountAndButtons(){
             const N = gTimes.length;
             const k = gCurrentIdx >= 0 ? (gCurrentIdx + 1) : 0;
-            document.getElementById('countInfo').textContent=`共${N}条数据，-${k-1}时刻`;
+            document.getElementById('countInfo').textContent=`共${N}条数据，-${k-1}时次`;
             const prev = document.getElementById('btnPrev');
             const next = document.getElementById('btnNext');
             prev.disabled = !(N > 0 && gCurrentIdx >= 0 && gCurrentIdx < N-1);
@@ -641,13 +613,12 @@
             updateSlider();
         });
 
-        // 滑动条联动
         function updateSlider(){
             const slider = document.getElementById('timeSlider');
             const N = gTimes.length;
             slider.max = N > 0 ? String(N-1) : '0';
             if (N > 0 && gCurrentIdx >= 0) {
-                const sliderVal = (N - 1) - gCurrentIdx; // 值越大越新
+                const sliderVal = (N - 1) - gCurrentIdx;
                 slider.value = String(sliderVal);
             }
             slider.disabled = N === 0;
@@ -656,7 +627,7 @@
             const N = gTimes.length; if (N === 0) return;
             const raw = parseInt(e.target.value, 10);
             const sliderVal = Math.max(0, Math.min(N-1, isNaN(raw)?0:raw));
-            const idx = (N - 1) - sliderVal; // 反向映射到数组索引（0=最新）
+            const idx = (N - 1) - sliderVal;
             if (idx === gCurrentIdx) return;
             gCurrentIdx = idx;
             const dt = gTimes[gCurrentIdx];
@@ -664,7 +635,6 @@
             await loadTileAt(dt);
             updateCountAndButtons();
         });
-        // 兜底加载最新
         loadRealtimeLatest().catch(err => {
             const info = document.getElementById('rtInfo');
             info.innerHTML = `<div class="text-sm text-red-600">${err.message}</div>`;