frontend/src/app/site-finder/analysis/[cad]/ptica/ptica.module.css

@@ -169,6 +169,25 @@
   color: var(--text-muted);
   background: var(--surface);
 }
+/* Active rail item — cyan accent + inset glow + left accent bar (prototype
+   .nav-item.active / .nav-item.active::before). */
+.navItemActive,
+.navItem.navItemActive {
+  color: var(--accent-cyan);
+  background: var(--surface);
+  border-color: var(--border);
+  box-shadow: inset 0 0 22px var(--glow);
+}
+.navItemActive::before {
+  content: "";
+  position: absolute;
+  left: -10px;
+  top: 14px;
+  bottom: 14px;
+  width: 2px;
+  background: var(--accent-cyan);
+  box-shadow: 0 0 10px var(--accent-cyan);
+}
 .navFoot {
   margin-top: auto;
   display: grid;

frontend/src/components/site-finder/ptica/DevelopmentScan.tsx

@@ -36,7 +36,7 @@ export function DevelopmentScan({ analysis, onOpenDrawer }: Props) {
 
   return (
     <>
-      <div id="scan" className={styles.sectionLabel}>
+      <div className={styles.sectionLabel}>
         Development Scan · <b>градостроительный анализ</b>
       </div>
       <section className={styles.scanGrid}>
@@ -60,16 +60,14 @@ export function DevelopmentScan({ analysis, onOpenDrawer }: Props) {
           drawerKey="market"
           onOpen={onOpenDrawer}
         />
-        <div id="economy">
         <ScanCard
           card={adaptEconomyCard()}
           drawerKey="economy"
           onOpen={onOpenDrawer}
         />
-        </div>
 
         <div
-          id="risks"
+          id="ptica-risks"
           className={`${styles.card} ${styles.scanCard} ${styles.scanCardCentered}`}
         >
           <h3 className={styles.cardTitle}>Риски</h3>

frontend/src/components/site-finder/ptica/PticaHero.tsx

@@ -30,12 +30,12 @@ export function PticaHero({ analysis, forecastReport, onOpenDrawer }: Props) {
   const buildGauge = adaptBuildabilityGauge(analysis);
 
   return (
-    <section id="passport" className={styles.hero}>
+    <section id="ptica-hero" className={styles.hero}>
       <PticaMap analysis={analysis} onOpenDrawer={onOpenDrawer} />
 
       <ParcelPassportCard analysis={analysis} onOpenDrawer={onOpenDrawer} />
 
-      <div id="potential" className={`${styles.panel} ${styles.scorePanel}`}>
+      <div className={`${styles.panel} ${styles.scorePanel}`}>
         <button
           type="button"
           className={styles.gaugeButton}

frontend/src/components/site-finder/ptica/PticaShell.tsx

@@ -2,8 +2,13 @@
 
 /**
  * PticaShell — cockpit chrome: sticky topbar (ПТИЦА wordmark + 4 tab buttons,
- * active state driven by props) and a left rail of anchor buttons that
- * scrollIntoView the matching hero/scan sections, plus a mono timestamp footer.
+ * active state driven by props) and a left rail of 7 icon+label nav buttons,
+ * plus a mono timestamp footer.
+ *
+ * The rail mirrors the prototype (ptica-redesign/app.js RAIL_TARGET): five
+ * `scroll` items jump to a cockpit section by element id, two `tab` items switch
+ * the top tab. A `scroll` item first activates the analysis tab (if needed) and
+ * scrolls on the next frame so the target is mounted before scrollIntoView runs.
  *
  * The timestamp is rendered only after mount (useState gated by an effect) to
  * avoid an SSR/client hydration mismatch on the clock value. The effect drives a
@@ -28,18 +33,175 @@ const TABS: TabDef[] = [
   { id: "compare", label: "Сравнение" },
 ];
 
-interface RailItem {
-  anchor: string;
+type RailItem =
+  | {
+      key: string;
       label: string;
+      icon: React.ReactNode;
+      kind: "scroll";
+      target: string;
     }
+  | {
+      key: string;
+      label: string;
+      icon: React.ReactNode;
+      kind: "tab";
+      target: PticaTab;
+    };
 
 const RAIL: RailItem[] = [
-  { anchor: "passport", label: "Паспорт" },
-  { anchor: "potential", label: "Потенциал" },
-  { anchor: "scan", label: "Скан" },
-  { anchor: "economy", label: "Экономика" },
-  { anchor: "risks", label: "Риски" },
-  { anchor: "compare-anchor", label: "Сравнение" },
+  {
+    key: "parcel",
+    label: "Участок",
+    kind: "scroll",
+    target: "ptica-hero",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <circle cx="12" cy="12" r="8" stroke="currentColor" strokeWidth="1.5" />
+        <circle cx="12" cy="12" r="3" stroke="currentColor" strokeWidth="1.5" />
+        <path
+          d="M12 2v3M12 19v3M2 12h3M19 12h3"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "potential",
+    label: "Потенциал",
+    kind: "scroll",
+    target: "ptica-potential",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <path
+          d="M4 16l5-5 4 3 7-8"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        />
+        <path
+          d="M16 6h4v4"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "product",
+    label: "Продукт",
+    kind: "scroll",
+    target: "ptica-product",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <path
+          d="M12 3l8 4.5v9L12 21l-8-4.5v-9L12 3z"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinejoin="round"
+        />
+        <path
+          d="M4 7.5l8 4.5 8-4.5M12 12v9"
+          stroke="currentColor"
+          strokeWidth="1.2"
+          opacity="0.7"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "economy",
+    label: "Экономика",
+    kind: "scroll",
+    target: "ptica-economy",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <path
+          d="M4 20V10M10 20V5M16 20v-7M22 20H2"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "risks",
+    label: "Риски",
+    kind: "scroll",
+    target: "ptica-risks",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <path
+          d="M12 4l8 14H4L12 4z"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinejoin="round"
+        />
+        <path
+          d="M12 10v4M12 16.5v.5"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinecap="round"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "compare",
+    label: "Сравнение",
+    kind: "tab",
+    target: "compare",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <rect
+          x="3"
+          y="5"
+          width="7"
+          height="14"
+          rx="1.5"
+          stroke="currentColor"
+          strokeWidth="1.5"
+        />
+        <rect
+          x="14"
+          y="5"
+          width="7"
+          height="14"
+          rx="1.5"
+          stroke="currentColor"
+          strokeWidth="1.5"
+        />
+      </svg>
+    ),
+  },
+  {
+    key: "reports",
+    label: "Отчёты",
+    kind: "tab",
+    target: "reports",
+    icon: (
+      <svg viewBox="0 0 24 24" fill="none" aria-hidden="true">
+        <path
+          d="M6 3h8l4 4v14H6V3z"
+          stroke="currentColor"
+          strokeWidth="1.5"
+          strokeLinejoin="round"
+        />
+        <path
+          d="M14 3v4h4M9 13h6M9 16h6"
+          stroke="currentColor"
+          strokeWidth="1.2"
+          strokeLinecap="round"
+        />
+      </svg>
+    ),
+  },
 ];
 
 const BirdMark = ({ className }: { className: string }) => (
@@ -59,14 +221,36 @@ interface Props {
   children: React.ReactNode;
 }
 
-function scrollToAnchor(anchor: string) {
-  if (typeof document === "undefined") return;
-  const el = document.getElementById(anchor);
-  el?.scrollIntoView({ behavior: "smooth", block: "start" });
-}
-
 export function PticaShell({ activeTab, onTabChange, children }: Props) {
   const [clock, setClock] = useState<string | null>(null);
+  // Last clicked scroll target, used to highlight the matching rail item while
+  // the analysis tab is active. Defaults to the hero (Участок).
+  const [activeScroll, setActiveScroll] = useState<string>("ptica-hero");
+
+  function handleRailClick(item: RailItem) {
+    if (item.kind === "tab") {
+      onTabChange(item.target);
+      return;
+    }
+    setActiveScroll(item.target);
+    if (activeTab !== "analysis") {
+      onTabChange("analysis");
+      requestAnimationFrame(() => {
+        document
+          .getElementById(item.target)
+          ?.scrollIntoView({ behavior: "smooth", block: "start" });
+      });
+      return;
+    }
+    document
+      .getElementById(item.target)
+      ?.scrollIntoView({ behavior: "smooth", block: "start" });
+  }
+
+  function isRailActive(item: RailItem): boolean {
+    if (item.kind === "tab") return activeTab === item.target;
+    return activeTab === "analysis" && activeScroll === item.target;
+  }
 
   useEffect(() => {
     function tick() {
@@ -91,11 +275,15 @@ export function PticaShell({ activeTab, onTabChange, children }: Props) {
         <nav className={styles.nav} aria-label="Разделы анализа">
           {RAIL.map((item) => (
             <button
-              key={item.anchor}
+              key={item.key}
               type="button"
-              className={styles.navItem}
-              onClick={() => scrollToAnchor(item.anchor)}
+              className={`${styles.navItem} ${
+                isRailActive(item) ? styles.navItemActive : ""
+              }`}
+              aria-current={isRailActive(item) ? "true" : undefined}
+              onClick={() => handleRailClick(item)}
             >
+              {item.icon}
               <span>{item.label}</span>
             </button>
           ))}

frontend/src/components/site-finder/ptica/cockpit/PticaBottomGrid.tsx

@@ -27,7 +27,7 @@ export function PticaBottomGrid({
   onOpenDrawer,
 }: Props) {
   return (
-    <section className={styles.bottomGrid}>
+    <section id="ptica-economy" className={styles.bottomGrid}>
       <InvestmentClearance onOpenDrawer={onOpenDrawer} />
       <BuySignalCard forecastReport={forecastReport} />
       <LegalStatus analysis={analysis} onOpenDrawer={onOpenDrawer} />

frontend/src/components/site-finder/ptica/cockpit/PticaLowerGrid.tsx

@@ -28,7 +28,7 @@ export function PticaLowerGrid({
   onOpenDrawer,
 }: Props) {
   return (
-    <section className={styles.lowerGrid}>
+    <section id="ptica-potential" className={styles.lowerGrid}>
       <OksCard onOpenDrawer={onOpenDrawer} />
       <DevelopmentPotentialCard
         analysis={analysis}

frontend/src/components/site-finder/ptica/cockpit/RecommendedProductCard.tsx

@@ -85,7 +85,7 @@ export function RecommendedProductCard({
     : { bars: [], byShare: false };
 
   return (
-    <div className={styles.card}>
+    <div id="ptica-product" className={styles.card}>
       <div className={styles.cardHead}>
         <h3 className={styles.cardTitle}>
           Recommended Product