diff --git a/web/src/index.css b/web/src/index.css
index 1580fe0..494f1ca 100644
--- a/web/src/index.css
+++ b/web/src/index.css
@@ -11321,27 +11321,43 @@ html.login-page--paused .login-page__flare {
     rgba(8, 13, 24, 0.4);
 }
 
-/* CSS immersive board — avoids native Fullscreen + modal focus-trap breaking clicks */
-.bs-cmp-board.is-fullscreen {
+/* Native :fullscreen + CSS immersive fallback (class only when FS API blocked) */
+.bs-cmp-board.is-fullscreen,
+.bs-cmp-board:fullscreen {
   --bs-cmp-surface: rgba(15, 23, 42, 0.92);
+  background: #0b1220;
+  color: #e2e8f0;
+  padding: 12px 14px;
+  gap: 10px;
+  overflow: hidden;
+  box-sizing: border-box;
+}
+
+.bs-cmp-board:fullscreen {
+  width: 100%;
+  height: 100%;
+  max-height: 100%;
+  min-height: 100%;
+  border-radius: 0;
+  margin: 0;
+}
+
+/* CSS fallback only — used when requestFullscreen is blocked */
+.bs-cmp-board.is-fullscreen:not(:fullscreen) {
   position: fixed;
   inset: 0;
-  z-index: 12000;
+  z-index: 2147483000;
   width: 100vw;
   height: 100vh;
   max-height: 100vh;
   min-height: 100vh;
   margin: 0;
   border-radius: 0;
-  padding: 12px 14px;
-  gap: 10px;
-  overflow: hidden;
-  background: #0b1220;
-  color: #e2e8f0;
   box-shadow: none;
 }
 
-body:has(.bs-cmp-board.is-fullscreen) {
+body:has(.bs-cmp-board.is-fullscreen),
+body:has(.bs-cmp-board:fullscreen) {
   overflow: hidden;
 }
 
@@ -12235,21 +12251,21 @@ body:has(.bs-cmp-board.is-fullscreen) {
 }
 
 .bs-cmp-group--key {
-  background: rgba(37, 99, 235, 0.18) !important;
-  color: #93c5fd !important;
-  border-bottom: 2px solid rgba(59, 130, 246, 0.55);
+  background: rgba(37, 99, 235, 0.28) !important;
+  color: #bfdbfe !important;
+  border-bottom: 2px solid #3b82f6;
 }
 
 .bs-cmp-group--compare {
-  background: rgba(245, 158, 11, 0.16) !important;
-  color: #fcd34d !important;
-  border-bottom: 2px solid rgba(245, 158, 11, 0.55);
+  background: rgba(245, 158, 11, 0.26) !important;
+  color: #fde68a !important;
+  border-bottom: 2px solid #f59e0b;
 }
 
 .bs-cmp-group--display {
-  background: rgba(148, 163, 184, 0.12) !important;
-  color: #cbd5e1 !important;
-  border-bottom: 2px solid rgba(148, 163, 184, 0.35);
+  background: rgba(100, 116, 139, 0.28) !important;
+  color: #e2e8f0 !important;
+  border-bottom: 2px solid #94a3b8;
 }
 
 .bs-cmp-diff-table tbody td {
@@ -12300,27 +12316,75 @@ body:has(.bs-cmp-board.is-fullscreen) {
 }
 
 .bs-cmp-diff-table thead tr.bs-cmp-field-row th.bs-cmp-col-key {
-  background: rgba(22, 36, 66, 0.98);
+  background: rgba(30, 58, 110, 0.95);
+  color: #bfdbfe;
 }
 
 .bs-cmp-diff-table thead tr.bs-cmp-field-row th.bs-cmp-col-compare {
-  background: rgba(42, 32, 16, 0.98);
+  background: rgba(78, 52, 12, 0.95);
+  color: #fde68a;
 }
 
 .bs-cmp-diff-table thead tr.bs-cmp-field-row th.bs-cmp-col-display {
-  background: rgba(15, 23, 42, 0.98);
+  background: rgba(40, 48, 64, 0.98);
+  color: #cbd5e1;
 }
 
+/* Zone banding: tint body cells so Key / Compare / Display stay distinct while scrolling */
 .bs-cmp-col-key {
-  background: rgba(59, 130, 246, 0.05);
+  --bs-cmp-zone: #3b82f6;
+  background: rgba(59, 130, 246, 0.08);
 }
 
 .bs-cmp-col-compare {
-  background: rgba(245, 158, 11, 0.04);
+  --bs-cmp-zone: #f59e0b;
+  background: rgba(245, 158, 11, 0.07);
 }
 
 .bs-cmp-col-display {
-  background: transparent;
+  --bs-cmp-zone: #94a3b8;
+  background: rgba(148, 163, 184, 0.04);
+}
+
+.bs-cmp-zone-start {
+  box-shadow: inset 3px 0 0 var(--bs-cmp-zone, #64748b);
+}
+
+.bs-cmp-diff-table tbody tr:nth-child(even) td.bs-cmp-col-key {
+  background: rgba(59, 130, 246, 0.12);
+}
+
+.bs-cmp-diff-table tbody tr:nth-child(even) td.bs-cmp-col-compare {
+  background: rgba(245, 158, 11, 0.1);
+}
+
+.bs-cmp-diff-table tbody tr:nth-child(even) td.bs-cmp-col-display {
+  background: rgba(148, 163, 184, 0.07);
+}
+
+.bs-cmp-diff-table tbody tr:hover td.bs-cmp-col-key {
+  background: rgba(59, 130, 246, 0.16);
+}
+
+.bs-cmp-diff-table tbody tr:hover td.bs-cmp-col-compare {
+  background: rgba(245, 158, 11, 0.14);
+}
+
+.bs-cmp-diff-table tbody tr:hover td.bs-cmp-col-display {
+  background: rgba(148, 163, 184, 0.1);
+}
+
+/* Diff highlight still wins inside compare/display cells */
+.bs-cmp-diff-table tbody td.bs-cmp-val-cell--diff {
+  background: rgba(245, 158, 11, 0.14) !important;
+}
+
+.bs-cmp-diff-table tbody td.bs-cmp-val-cell--pair.is-removed {
+  background: rgba(239, 68, 68, 0.12) !important;
+}
+
+.bs-cmp-diff-table tbody td.bs-cmp-val-cell--pair.is-added {
+  background: rgba(34, 197, 94, 0.12) !important;
 }
 
 .bs-cmp-overview__verdict {
diff --git a/web/src/pages/network/BizComparePage.tsx b/web/src/pages/network/BizComparePage.tsx
index f585ef4..bf232c7 100644
--- a/web/src/pages/network/BizComparePage.tsx
+++ b/web/src/pages/network/BizComparePage.tsx
@@ -166,18 +166,31 @@ function PairCell(props: {
   reason?: string;
   beforeLabel: string;
   afterLabel: string;
+  zoneClass?: string;
+  zoneStart?: boolean;
 }) {
-  const { beforeText, afterText, kind, mismatch, reason, beforeLabel, afterLabel } = props;
+  const {
+    beforeText,
+    afterText,
+    kind,
+    mismatch,
+    reason,
+    beforeLabel,
+    afterLabel,
+    zoneClass = "",
+    zoneStart = false,
+  } = props;
   const pre = beforeText || "—";
   const post = afterText || "—";
   const isAdded = kind === "added";
   const isRemoved = kind === "removed";
   const isDiff = mismatch || isAdded || isRemoved;
+  const zone = `${zoneClass}${zoneStart ? " bs-cmp-zone-start" : ""}`.trim();
 
   // Matched values: single line (no 前/后 stack) — cuts density on pass-heavy sheets.
   if (!isDiff) {
     return (
-      <td className="bs-cmp-val-cell bs-cmp-val-cell--same">
+      <td className={`bs-cmp-val-cell bs-cmp-val-cell--same ${zone}`.trim()}>
         <span className={`bs-cmp-val${beforeText ? "" : " is-empty"}`}>{pre}</span>
       </td>
     );
@@ -204,7 +217,7 @@ function PairCell(props: {
     <td
       className={`bs-cmp-val-cell bs-cmp-val-cell--pair bs-cmp-val-cell--diff${
         isAdded ? " is-added" : ""
-      }${isRemoved ? " is-removed" : ""}`}
+      }${isRemoved ? " is-removed" : ""}${zone ? ` ${zone}` : ""}`}
     >
       <div className="bs-cmp-pair">
         <div className="bs-cmp-pair__row">
@@ -872,6 +885,9 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
     setRuns([]);
     setRunDetail(null);
     setResultSheetId("");
+    if (document.fullscreenElement === boardRef.current) {
+      void document.exitFullscreen().catch(() => undefined);
+    }
     setBoardFs(false);
   }, [pageMode]);
 
@@ -1216,8 +1232,19 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
     tableScrollPosRef.current = { top: wrap.scrollTop, left: wrap.scrollLeft };
   }, []);
 
+  // Native Fullscreen escapes modal transform containing-block (CSS fixed fails inside dialog).
   useEffect(() => {
-    if (!boardFs) return;
+    const syncFs = () => {
+      const el = boardRef.current;
+      setBoardFs(Boolean(el && document.fullscreenElement === el));
+    };
+    document.addEventListener("fullscreenchange", syncFs);
+    return () => document.removeEventListener("fullscreenchange", syncFs);
+  }, []);
+
+  // CSS-fallback immersive: Esc exits without closing the job modal.
+  useEffect(() => {
+    if (!boardFs || document.fullscreenElement) return;
     const onKey = (e: KeyboardEvent) => {
       if (e.key !== "Escape") return;
       e.preventDefault();
@@ -1238,8 +1265,22 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
     wrap.scrollLeft = left;
   }, [boardFs]);
 
-  const toggleBoardFullscreen = () => {
+  const toggleBoardFullscreen = async () => {
+    const el = boardRef.current;
+    if (!el) return;
     rememberTableScroll();
+    try {
+      if (document.fullscreenElement === el) {
+        await document.exitFullscreen();
+        return;
+      }
+      if (!document.fullscreenElement) {
+        await el.requestFullscreen();
+        return;
+      }
+    } catch {
+      // Native FS blocked — CSS immersive fallback
+    }
     setBoardFs((v) => !v);
   };
 
@@ -1705,6 +1746,9 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
   };
 
   const closeJob = () => {
+    if (document.fullscreenElement === boardRef.current) {
+      void document.exitFullscreen().catch(() => undefined);
+    }
     setBoardFs(false);
     setJobId("");
     setRuns([]);
@@ -2829,7 +2873,7 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                     size="sm"
                     variant="secondary"
                     isDisabled={!runDetail}
-                    onPress={() => toggleBoardFullscreen()}
+                    onPress={() => void toggleBoardFullscreen()}
                   >
                     {boardFs ? t("bizCompare.exitFullscreen") : t("bizCompare.fullscreen")}
                   </Button>
@@ -3110,18 +3154,27 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                                 )}
                                 {hasGroups ? (
                                   <tr className="bs-cmp-field-row">
-                                    {keyCols.map((k) => (
-                                      <th key={k} className="bs-cmp-col-key">
+                                    {keyCols.map((k, ki) => (
+                                      <th
+                                        key={k}
+                                        className={`bs-cmp-col-key${ki === 0 ? " bs-cmp-zone-start" : ""}`}
+                                      >
                                         <span className="bs-cmp-th__name">{k}</span>
                                       </th>
                                     ))}
-                                    {compareCols.map((f) => (
-                                      <th key={f} className="bs-cmp-col-compare">
+                                    {compareCols.map((f, fi) => (
+                                      <th
+                                        key={f}
+                                        className={`bs-cmp-col-compare${fi === 0 ? " bs-cmp-zone-start" : ""}`}
+                                      >
                                         <span className="bs-cmp-th__name">{f}</span>
                                       </th>
                                     ))}
-                                    {displayCols.map((f) => (
-                                      <th key={f} className="bs-cmp-col-display">
+                                    {displayCols.map((f, fi) => (
+                                      <th
+                                        key={f}
+                                        className={`bs-cmp-col-display${fi === 0 ? " bs-cmp-zone-start" : ""}`}
+                                      >
                                         <span className="bs-cmp-th__name">{f}</span>
                                       </th>
                                     ))}
@@ -3161,16 +3214,26 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                                       : failFieldsLabel(d)}
                                   </td>
                                 ) : null}
-                                {resultColumns.keys.map((k) => (
-                                  <td key={k} className="bs-cmp-key-cell">
+                                {resultColumns.keys.map((k, ki) => (
+                                  <td
+                                    key={k}
+                                    className={`bs-cmp-key-cell bs-cmp-col-key${
+                                      ki === 0 ? " bs-cmp-zone-start" : ""
+                                    }`}
+                                  >
                                     {cellText(d.key?.[k] ?? pre[k] ?? post[k]) || "—"}
                                   </td>
                                 ))}
-                                {resultColumns.extras.map((f) => {
+                                {resultColumns.extras.map((f, fi) => {
                                   const pv = cellText(pre[f]);
                                   const av = cellText(post[f]);
                                   const ch = d.changes?.[f];
                                   const isCmp = resultColumns.compareSet.has(f);
+                                  const prev = resultColumns.extras[fi - 1];
+                                  const prevCmp = prev
+                                    ? resultColumns.compareSet.has(prev)
+                                    : null;
+                                  const zoneStart = fi === 0 || prevCmp !== isCmp;
                                   const mismatch =
                                     d.kind === "added" || d.kind === "removed"
                                       ? Boolean(pv || av)
@@ -3187,6 +3250,10 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                                       reason={ch?.reason}
                                       beforeLabel={t("bizCompare.pairBefore")}
                                       afterLabel={t("bizCompare.pairAfter")}
+                                      zoneClass={
+                                        isCmp ? "bs-cmp-col-compare" : "bs-cmp-col-display"
+                                      }
+                                      zoneStart={zoneStart}
                                     />
                                   );
                                 })}