diff --git a/tradein-mvp/frontend/src/components/trade-in/v2/ParamsPanel.tsx b/tradein-mvp/frontend/src/components/trade-in/v2/ParamsPanel.tsx
index 203d0aef..9059a0b5 100644
--- a/tradein-mvp/frontend/src/components/trade-in/v2/ParamsPanel.tsx
+++ b/tradein-mvp/frontend/src/components/trade-in/v2/ParamsPanel.tsx
@@ -11,7 +11,16 @@
 // the CRM dropdown still has no backend → kept visually but disabled. Hover/active
 // + @keyframes live in a pp-prefixed local <style>.
 
-import { useRef, useState, type CSSProperties } from "react";
+import {
+  useEffect,
+  useId,
+  useRef,
+  useState,
+  type CSSProperties,
+  type Dispatch,
+  type KeyboardEvent as ReactKeyboardEvent,
+  type SetStateAction,
+} from "react";
 import { tokens } from "./tokens";
 import { dropdownOptions } from "./fixtures";
 import {
@@ -47,6 +56,69 @@ interface DdProps {
   triggerColor?: string;
   caretColor?: string;
   disabled?: boolean;
+  ariaLabel?: string;
+}
+
+// Shared combobox keydown logic for the HUD dropdowns (the <Dd> widget + the
+// inline РАДИУС copy). aria-activedescendant pattern: focus STAYS on the trigger
+// button; arrows move a virtual `activeIdx` highlight, Enter/Space commit it,
+// Escape/Tab close. Navigation keys preventDefault to stop page scroll.
+function comboKeyDown(
+  e: ReactKeyboardEvent<HTMLButtonElement>,
+  open: boolean,
+  options: string[],
+  activeIdx: number,
+  setActiveIdx: Dispatch<SetStateAction<number>>,
+  onToggle: () => void,
+  onSelect: (v: string) => void,
+) {
+  if (!open) {
+    if (
+      e.key === "ArrowDown" ||
+      e.key === "ArrowUp" ||
+      e.key === "Enter" ||
+      e.key === " "
+    ) {
+      e.preventDefault();
+      onToggle();
+    }
+    return;
+  }
+  switch (e.key) {
+    case "ArrowDown":
+      e.preventDefault();
+      setActiveIdx((i) => Math.min(options.length - 1, i + 1));
+      break;
+    case "ArrowUp":
+      e.preventDefault();
+      setActiveIdx((i) => Math.max(0, i - 1));
+      break;
+    case "Home":
+      e.preventDefault();
+      setActiveIdx(0);
+      break;
+    case "End":
+      e.preventDefault();
+      setActiveIdx(options.length - 1);
+      break;
+    case "Enter":
+    case " ":
+      e.preventDefault();
+      if (activeIdx >= 0 && activeIdx < options.length) {
+        onSelect(options[activeIdx]);
+      }
+      break;
+    case "Escape":
+      e.preventDefault();
+      onToggle();
+      break;
+    case "Tab":
+      // do NOT preventDefault — let focus move naturally; just close the list
+      onToggle();
+      break;
+    default:
+      break;
+  }
 }
 
 function Dd({
@@ -65,7 +137,23 @@ function Dd({
   triggerColor = tokens.ink,
   caretColor = tokens.muted2,
   disabled = false,
+  ariaLabel,
 }: DdProps) {
+  const listId = useId();
+  const optId = (i: number) => `${listId}-opt-${i}`;
+  const [activeIdx, setActiveIdx] = useState(-1);
+
+  // On open, point the virtual highlight at the current selection (fallback to
+  // the first option); reset when closed. Pure UI sync — not a data effect.
+  useEffect(() => {
+    if (open) {
+      const idx = options.indexOf(value);
+      setActiveIdx(idx >= 0 ? idx : 0);
+    } else {
+      setActiveIdx(-1);
+    }
+  }, [open, value, options]);
+
   const panelStyle: CSSProperties = {
     position: "absolute",
     left: 0,
@@ -88,7 +176,8 @@ function Dd({
 
   return (
     <div style={{ position: "relative" }}>
-      <div
+      <button
+        type="button"
         className={
           disabled
             ? "pp-dd-trigger-disabled"
@@ -96,7 +185,31 @@ function Dd({
               ? "pp-dd-trigger-dashed"
               : "pp-dd-trigger"
         }
-        onClick={onToggle}
+        onClick={!disabled ? onToggle : undefined}
+        onKeyDown={
+          disabled
+            ? undefined
+            : (e) =>
+                comboKeyDown(
+                  e,
+                  open,
+                  options,
+                  activeIdx,
+                  setActiveIdx,
+                  onToggle,
+                  onSelect,
+                )
+        }
+        role="combobox"
+        aria-haspopup="listbox"
+        aria-expanded={open}
+        aria-controls={listId}
+        aria-activedescendant={
+          open && activeIdx >= 0 ? optId(activeIdx) : undefined
+        }
+        aria-label={ariaLabel}
+        aria-disabled={disabled || undefined}
+        disabled={disabled}
         style={{
           height: triggerHeight,
           background: triggerBg,
@@ -109,6 +222,8 @@ function Dd({
           fontSize: triggerFontSize,
           color: triggerColor,
           cursor: disabled ? "default" : "pointer",
+          width: "100%",
+          textAlign: "left",
         }}
       >
         {value}
@@ -123,14 +238,24 @@ function Dd({
             ▼
           </span>
         )}
-      </div>
+      </button>
       {open && (
-        <div style={panelStyle}>
-          {options.map((o) => (
+        <div
+          style={panelStyle}
+          role="listbox"
+          id={listId}
+          aria-label={ariaLabel}
+          tabIndex={-1}
+        >
+          {options.map((o, i) => (
             <div
               key={o}
               className="pp-dd-opt"
+              role="option"
+              id={optId(i)}
+              aria-selected={o === value}
               onClick={() => onSelect(o)}
+              onMouseEnter={() => setActiveIdx(i)}
               style={{
                 padding: "7px 10px",
                 fontSize: optionFontSize,
@@ -139,6 +264,7 @@ function Dd({
                 cursor: "pointer",
                 color: o === value ? tokens.accent : tokens.ink,
                 fontWeight: o === value ? 600 : 400,
+                background: i === activeIdx ? "rgba(46,139,255,.1)" : undefined,
               }}
             >
               {o}
@@ -353,6 +479,9 @@ export default function ParamsPanel({
   markers = [],
 }: ParamsPanelProps) {
   const [openDd, setOpenDd] = useState<DdKey>(null);
+  // РАДИУС combobox a11y state (aria-activedescendant highlight + listbox id).
+  const radiusListId = useId();
+  const [radiusActive, setRadiusActive] = useState(-1);
   // Map zoom — applied as transform: scale() on the map content layer (not the
   // whole panel). Default 1 (identity → pixel-identical), step .25, clamp 1–2.5
   // (no zoom-out below 1: there is no real basemap behind the blueprint SVG, so
@@ -406,6 +535,9 @@ export default function ParamsPanel({
       : null,
   );
   const debounceRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+  // БАЛКОН radiogroup focus targets (roving tabindex).
+  const balNoRef = useRef<HTMLButtonElement>(null);
+  const balYesRef = useRef<HTMLButtonElement>(null);
   const suggest = useGeocodeSuggest(addressQuery);
 
   const handleAddressChange = (v: string) => {
@@ -436,6 +568,34 @@ export default function ParamsPanel({
     setOpenDd(null);
   };
 
+  // Keep the РАДИУС virtual highlight pointed at the open selection (UI sync,
+  // not a data effect) — mirrors the <Dd> internal effect.
+  useEffect(() => {
+    if (openDd === "radius") {
+      const idx = RADIUS_OPTIONS.indexOf(radius);
+      setRadiusActive(idx >= 0 ? idx : 0);
+    } else {
+      setRadiusActive(-1);
+    }
+  }, [openDd, radius]);
+
+  // БАЛКОН radiogroup keyboard: arrows pick + move focus; Space/Enter commit the
+  // focused option.
+  const handleBalconyKey = (e: ReactKeyboardEvent<HTMLButtonElement>) => {
+    if (e.key === "ArrowRight" || e.key === "ArrowDown") {
+      e.preventDefault();
+      setBalcony(true);
+      balYesRef.current?.focus();
+    } else if (e.key === "ArrowLeft" || e.key === "ArrowUp") {
+      e.preventDefault();
+      setBalcony(false);
+      balNoRef.current?.focus();
+    } else if (e.key === " " || e.key === "Enter") {
+      e.preventDefault();
+      setBalcony(e.currentTarget === balYesRef.current);
+    }
+  };
+
   const handleSubmit = () => {
     const trimmedAddress = address.trim();
     const areaNum = Number(area.replace(",", "."));
@@ -493,8 +653,14 @@ export default function ParamsPanel({
     display: "flex",
     alignItems: "center",
     justifyContent: "center",
+    // No Tailwind preflight here → reset UA <button> chrome explicitly so the
+    // radio pills keep the HUD font/size (UA buttons don't inherit font-family).
+    // `inherit` picks up the artboard's Manrope, matching the prior <div> + the
+    // map +/- buttons (strict parity, one approach).
+    fontFamily: "inherit",
     fontSize: 11,
     letterSpacing: 1,
+    padding: 0,
     cursor: "pointer",
     transition: "all .15s",
   };
@@ -701,7 +867,9 @@ export default function ParamsPanel({
             gap: 5,
           }}
         >
-          <div
+          <button
+            type="button"
+            aria-label="Приблизить карту"
             style={{
               width: 24,
               height: 24,
@@ -715,12 +883,17 @@ export default function ParamsPanel({
               transition: "all .15s",
               fontSize: 15,
               color: tokens.muted,
+              padding: 0,
+              fontFamily: "inherit",
             }}
             onClick={() => setZoom((z) => Math.min(2.5, z + 0.25))}
           >
             +
-          </div>
-          <div
+          </button>
+          <button
+            type="button"
+            aria-label="Отдалить карту"
+            disabled={zoom <= 1}
             style={{
               width: 24,
               height: 24,
@@ -735,13 +908,15 @@ export default function ParamsPanel({
               fontSize: 15,
               color: tokens.muted,
               opacity: zoom <= 1 ? 0.4 : 1,
+              padding: 0,
+              fontFamily: "inherit",
             }}
             onClick={() => {
               if (zoom > 1) setZoom((z) => Math.max(1, z - 0.25));
             }}
           >
             −
-          </div>
+          </button>
         </div>
 
         {/* map corner bracket */}
@@ -775,9 +950,31 @@ export default function ParamsPanel({
             submit). Trigger markup unchanged; now toggles a Dd-style option panel
             and uses the shared pp-dd-trigger hover cue. */}
         <div style={{ position: "relative" }}>
-          <div
+          <button
+            type="button"
             className="pp-dd-trigger"
             onClick={() => toggle("radius")}
+            onKeyDown={(e) =>
+              comboKeyDown(
+                e,
+                openDd === "radius",
+                RADIUS_OPTIONS,
+                radiusActive,
+                setRadiusActive,
+                () => toggle("radius"),
+                pick(setRadius),
+              )
+            }
+            role="combobox"
+            aria-haspopup="listbox"
+            aria-expanded={openDd === "radius"}
+            aria-controls={radiusListId}
+            aria-activedescendant={
+              openDd === "radius" && radiusActive >= 0
+                ? `${radiusListId}-opt-${radiusActive}`
+                : undefined
+            }
+            aria-label="Радиус анализа"
             style={{
               display: "flex",
               alignItems: "center",
@@ -787,19 +984,30 @@ export default function ParamsPanel({
               padding: "6px 10px",
               fontSize: 12,
               fontFamily: tokens.font.mono,
+              color: "inherit",
               cursor: "pointer",
             }}
           >
             <span>{radius}</span>
             <span style={{ color: tokens.muted2, fontSize: 9 }}>▼</span>
-          </div>
+          </button>
           {openDd === "radius" && (
-            <div style={radiusPanel}>
-              {RADIUS_OPTIONS.map((o) => (
+            <div
+              style={radiusPanel}
+              role="listbox"
+              id={radiusListId}
+              aria-label="Радиус анализа"
+              tabIndex={-1}
+            >
+              {RADIUS_OPTIONS.map((o, i) => (
                 <div
                   key={o}
                   className="pp-dd-opt"
+                  role="option"
+                  id={`${radiusListId}-opt-${i}`}
+                  aria-selected={o === radius}
                   onClick={() => pick(setRadius)(o)}
+                  onMouseEnter={() => setRadiusActive(i)}
                   style={{
                     padding: "7px 10px",
                     fontSize: 12,
@@ -808,6 +1016,8 @@ export default function ParamsPanel({
                     cursor: "pointer",
                     color: o === radius ? tokens.accent : tokens.ink,
                     fontWeight: o === radius ? 600 : 400,
+                    background:
+                      i === radiusActive ? "rgba(46,139,255,.1)" : undefined,
                   }}
                 >
                   {o}
@@ -863,16 +1073,26 @@ export default function ParamsPanel({
         }}
       >
         <div>
-          <div style={hintLabel}>АДРЕС (YANDEX / NOMINATIM)</div>
+          <label
+            htmlFor="pp-address"
+            style={{ ...hintLabel, display: "block" }}
+          >
+            АДРЕС (YANDEX / NOMINATIM)
+          </label>
           <div style={{ position: "relative" }}>
             {/* Address autocomplete (geocode suggest, ЕКБ viewbox). Typed text
                 is debounced into `addressQuery`; the dropdown below mirrors the
                 HUD <Dd> panel styling. Picking an item fills the full address
                 and captures lat/lon for the estimate payload. */}
             <input
+              id="pp-address"
               className="pp-input"
               type="text"
               value={address}
+              aria-invalid={fieldErrors.address ? true : undefined}
+              aria-describedby={
+                fieldErrors.address ? "pp-address-err" : undefined
+              }
               onChange={(e) => handleAddressChange(e.target.value)}
               onFocus={() => {
                 if (address.trim().length >= 3) setSuggestOpen(true);
@@ -937,7 +1157,11 @@ export default function ParamsPanel({
               </div>
             )}
             {fieldErrors.address && (
-              <div style={{ ...errorText, marginTop: 4 }} role="alert">
+              <div
+                id="pp-address-err"
+                style={{ ...errorText, marginTop: 4 }}
+                role="alert"
+              >
                 {fieldErrors.address}
               </div>
             )}
@@ -946,12 +1170,17 @@ export default function ParamsPanel({
 
         <div style={fieldRow}>
           <div>
-            <div style={hintLabel}>ПЛОЩАДЬ, М²</div>
+            <label htmlFor="pp-area" style={{ ...hintLabel, display: "block" }}>
+              ПЛОЩАДЬ, М²
+            </label>
             <input
+              id="pp-area"
               className="pp-input"
               type="text"
               inputMode="decimal"
               value={area}
+              aria-invalid={fieldErrors.area ? true : undefined}
+              aria-describedby={fieldErrors.area ? "pp-area-err" : undefined}
               onChange={(e) => {
                 setArea(e.target.value.replace(/[^\d.,]/g, ""));
                 if (fieldErrors.area)
@@ -968,7 +1197,11 @@ export default function ParamsPanel({
               }
             />
             {fieldErrors.area && (
-              <div style={{ ...errorText, marginTop: 4 }} role="alert">
+              <div
+                id="pp-area-err"
+                style={{ ...errorText, marginTop: 4 }}
+                role="alert"
+              >
                 {fieldErrors.area}
               </div>
             )}
@@ -984,6 +1217,7 @@ export default function ParamsPanel({
               mono
               triggerFontSize={14}
               optionFontSize={13}
+              ariaLabel="Комнат"
             />
           </div>
         </div>
@@ -991,10 +1225,13 @@ export default function ParamsPanel({
         <div style={fieldRow}>
           <div>
             <div style={{ display: "flex", justifyContent: "space-between" }}>
-              <span style={hintLabel}>ЭТАЖ</span>
+              <label htmlFor="pp-floor" style={hintLabel}>
+                ЭТАЖ
+              </label>
               <span style={optHint}>если знаете</span>
             </div>
             <input
+              id="pp-floor"
               className="pp-input"
               type="text"
               inputMode="numeric"
@@ -1009,10 +1246,13 @@ export default function ParamsPanel({
           </div>
           <div>
             <div style={{ display: "flex", justifyContent: "space-between" }}>
-              <span style={hintLabel}>ВСЕГО ЭТАЖЕЙ</span>
+              <label htmlFor="pp-total-floors" style={hintLabel}>
+                ВСЕГО ЭТАЖЕЙ
+              </label>
               <span style={optHint}>если знаете</span>
             </div>
             <input
+              id="pp-total-floors"
               className="pp-input"
               type="text"
               inputMode="numeric"
@@ -1043,10 +1283,13 @@ export default function ParamsPanel({
         <div style={fieldRow}>
           <div>
             <div style={{ display: "flex", justifyContent: "space-between" }}>
-              <span style={hintLabel}>ГОД ПОСТРОЙКИ</span>
+              <label htmlFor="pp-year" style={hintLabel}>
+                ГОД ПОСТРОЙКИ
+              </label>
               <span style={optHint}>опц.</span>
             </div>
             <input
+              id="pp-year"
               className="pp-input"
               type="text"
               inputMode="numeric"
@@ -1073,6 +1316,7 @@ export default function ParamsPanel({
               mono={false}
               triggerFontSize={13}
               optionFontSize={12}
+              ariaLabel="Тип дома"
             />
           </div>
         </div>
@@ -1092,23 +1336,40 @@ export default function ParamsPanel({
               mono={false}
               triggerFontSize={13}
               optionFontSize={12}
+              ariaLabel="Состояние ремонта"
             />
           </div>
           <div>
             <div style={hintLabel}>БАЛКОН / ЛОДЖИЯ</div>
-            <div style={{ height: 40, display: "flex", gap: 6 }}>
-              <div
+            <div
+              role="radiogroup"
+              aria-label="Балкон или лоджия"
+              style={{ height: 40, display: "flex", gap: 6 }}
+            >
+              <button
+                type="button"
+                role="radio"
+                aria-checked={balcony === false}
+                tabIndex={balcony === false || balcony === null ? 0 : -1}
+                ref={balNoRef}
                 onClick={() => setBalcony(false)}
+                onKeyDown={handleBalconyKey}
                 style={{ ...balBase, ...(balcony === false ? balOn : balOff) }}
               >
                 НЕТ
-              </div>
-              <div
+              </button>
+              <button
+                type="button"
+                role="radio"
+                aria-checked={balcony === true}
+                tabIndex={balcony === true ? 0 : -1}
+                ref={balYesRef}
                 onClick={() => setBalcony(true)}
+                onKeyDown={handleBalconyKey}
                 style={{ ...balBase, ...(balcony === true ? balOn : balOff) }}
               >
                 ДА
-              </div>
+              </button>
             </div>
           </div>
         </div>
@@ -1136,6 +1397,7 @@ export default function ParamsPanel({
             triggerColor={tokens.hint}
             caretColor={tokens.muted4}
             disabled
+            ariaLabel="CRM — для менеджера"
           />
         </div>
       </div>