refactor(ThumbOnlyRangeSlider): 优化滑块拖拽逻辑和事件处理

- 移除原有基于客户端X坐标计算值的函数，改用更精确的偏移计算
- 实现滑块中心位置和偏移值转换函数，确保滑块不会超出轨道边界
- 将原生输入禁用指针事件，由外层容器处理所有指针事件以提升触控体验
- 修复触摸设备上滑块跳跃问题，防止点击轨道时误触导致值突变
- 优化指针事件绑定和释放逻辑，支持多种交互状态切换
- 保持键盘无障碍可用，输入框仍可通过键盘改变值并触发事件

style(BrandDrawer): 修正抽屉高度适配并增加对动态视窗单位的支持

- 将固定高度单位58dvh替换为58vh，并增加max-h-full以限制最大高度
- 利用CSS supports媒体查询，针对支持1dvh单位的浏览器恢复58dvh高度
- 修复在不同设备和浏览器中抽屉显示高度不一致的问题

client/src/components/ThumbOnlyRangeSlider.tsx

@@ -1,27 +1,22 @@
 import { cn } from "@/lib/utils";
 import { useRef, type CSSProperties } from "react";
 
-/** Matches .cyan-slider thumb (~17.6px); generous hit area for touch. */
+/** Generous hit area around the thumb for touch. */
 const THUMB_HIT_RADIUS_PX = 24;
+/** Half of the .cyan-slider thumb (~17.6-18px wide); the thumb center never reaches the track ends. */
+const THUMB_HALF_WIDTH_PX = 9;
 
-function valueFromClientX(input: HTMLInputElement, clientX: number): number {
-  const rect = input.getBoundingClientRect();
-  const min = Number(input.min);
-  const max = Number(input.max);
-  if (rect.width <= 0) return Number(input.value);
-  const ratio = Math.max(0, Math.min(1, (clientX - rect.left) / rect.width));
-  return Math.round(min + ratio * (max - min));
-}
-
-function isPointerOnThumb(input: HTMLInputElement, clientX: number): boolean {
-  const rect = input.getBoundingClientRect();
-  const min = Number(input.min);
-  const max = Number(input.max);
-  const value = Number(input.value);
+function thumbCenterXPx(trackWidth: number, min: number, max: number, value: number): number {
   const span = max - min;
   const ratio = span > 0 ? (value - min) / span : 0;
-  const thumbCenterX = rect.left + ratio * rect.width;
-  return Math.abs(clientX - thumbCenterX) <= THUMB_HIT_RADIUS_PX;
+  const travel = Math.max(0, trackWidth - THUMB_HALF_WIDTH_PX * 2);
+  return THUMB_HALF_WIDTH_PX + ratio * travel;
+}
+
+function valueFromOffsetXPx(trackWidth: number, min: number, max: number, offsetX: number): number {
+  const travel = Math.max(1, trackWidth - THUMB_HALF_WIDTH_PX * 2);
+  const ratio = Math.max(0, Math.min(1, (offsetX - THUMB_HALF_WIDTH_PX) / travel));
+  return Math.round(min + ratio * (max - min));
 }
 
 const RELEASE_KEYS = [
@@ -52,6 +47,13 @@ export interface ThumbOnlyRangeSliderProps {
 /**
  * Range slider that ignores track clicks/taps — only the thumb can be dragged.
  * Prevents accidental jumps to high volume when missing the thumb.
+ *
+ * The native <input type="range"> is rendered pointer-events:none and driven
+ * entirely by wrapper pointer events. On touch input the native tap-to-position
+ * behavior cannot be reliably canceled via preventDefault on pointerdown (React
+ * listens to touchstart passively at the root, and the touch-driven path differs
+ * from desktop mouse), so the only robust fix is to remove the native pointer
+ * interaction surface altogether. The input stays keyboard-focusable for a11y.
  */
 export default function ThumbOnlyRangeSlider({
   value,
@@ -65,81 +67,96 @@ export default function ThumbOnlyRangeSlider({
   onDragStart,
   onDragEnd,
 }: ThumbOnlyRangeSliderProps) {
-  const draggingRef = useRef(false);
+  const inputRef = useRef<HTMLInputElement | null>(null);
+  const dragRef = useRef<{ pointerId: number; grabOffsetPx: number } | null>(null);
+  const valueRef = useRef(value);
+  valueRef.current = value;
 
-  const emitRelease = (el: EventTarget | null) => {
-    if (disabled) return;
-    if (!(el instanceof HTMLInputElement)) return;
-    onRelease?.(Number(el.value));
+  const finishDrag = (pointerId: number | null) => {
+    const drag = dragRef.current;
+    if (!drag) return;
+    if (pointerId !== null && drag.pointerId !== pointerId) return;
+    dragRef.current = null;
+    onRelease?.(valueRef.current);
     onDragEnd?.();
   };
 
   return (
-    <input
-      type="range"
-      min={min}
-      max={max}
-      value={value}
-      disabled={disabled}
-      className={cn("cyan-slider relative z-10", className)}
+    <div
+      className={cn(
+        "relative z-10 flex h-6 w-full items-center",
+        disabled ? "cursor-default" : "cursor-pointer",
+        className,
+      )}
       style={{ touchAction: "none", ...style }}
-      onChange={(e) => {
-        if (disabled || draggingRef.current) return;
-        onChange(Number(e.target.value));
-      }}
       onPointerDown={(e) => {
-        if (disabled) return;
-        const input = e.currentTarget;
-        if (!isPointerOnThumb(input, e.clientX)) {
-          e.preventDefault();
-          return;
-        }
+        if (disabled || dragRef.current) return;
+        if (e.pointerType === "mouse" && e.button !== 0) return;
+        const input = inputRef.current;
+        if (!input) return;
+        const rect = input.getBoundingClientRect();
+        const pressX = e.clientX - rect.left;
+        const centerX = thumbCenterXPx(rect.width, min, max, valueRef.current);
+        // Track press: ignore entirely — no value change, no drag.
+        if (Math.abs(pressX - centerX) > THUMB_HIT_RADIUS_PX) return;
         e.preventDefault();
-        draggingRef.current = true;
+        dragRef.current = { pointerId: e.pointerId, grabOffsetPx: pressX - centerX };
         onDragStart?.();
-        input.setPointerCapture(e.pointerId);
-        onChange(valueFromClientX(input, e.clientX));
+        e.currentTarget.setPointerCapture(e.pointerId);
       }}
       onPointerMove={(e) => {
-        if (disabled || !draggingRef.current) return;
-        onChange(valueFromClientX(e.currentTarget, e.clientX));
+        const drag = dragRef.current;
+        if (disabled || !drag || drag.pointerId !== e.pointerId) return;
+        const input = inputRef.current;
+        if (!input) return;
+        const rect = input.getBoundingClientRect();
+        const offsetX = e.clientX - rect.left - drag.grabOffsetPx;
+        onChange(valueFromOffsetXPx(rect.width, min, max, offsetX));
       }}
       onPointerUp={(e) => {
-        if (!draggingRef.current) return;
-        draggingRef.current = false;
+        const drag = dragRef.current;
+        if (!drag || drag.pointerId !== e.pointerId) return;
         try {
           e.currentTarget.releasePointerCapture(e.pointerId);
         } catch {
           // ignore
         }
-        emitRelease(e.currentTarget);
+        finishDrag(e.pointerId);
       }}
-      onPointerCancel={(e) => {
-        if (!draggingRef.current) return;
-        draggingRef.current = false;
-        emitRelease(e.currentTarget);
-      }}
-      onLostPointerCapture={(e) => {
-        if (!draggingRef.current) return;
-        draggingRef.current = false;
-        emitRelease(e.currentTarget);
-      }}
-      onBlur={(e) => {
-        if (draggingRef.current) {
-          draggingRef.current = false;
-          emitRelease(e.currentTarget);
-          return;
-        }
-        if (!disabled) {
-          onRelease?.(Number(e.currentTarget.value));
-        }
-      }}
-      onKeyUp={(e) => {
-        if (disabled) return;
-        if (RELEASE_KEYS.includes(e.key as (typeof RELEASE_KEYS)[number])) {
-          emitRelease(e.currentTarget);
-        }
-      }}
-    />
+      onPointerCancel={() => finishDrag(null)}
+      onLostPointerCapture={() => finishDrag(null)}
+    >
+      <input
+        ref={inputRef}
+        type="range"
+        min={min}
+        max={max}
+        value={value}
+        disabled={disabled}
+        className="cyan-slider block w-full"
+        style={{ pointerEvents: "none", touchAction: "none" }}
+        onChange={(e) => {
+          // Only reachable via keyboard — the input no longer receives pointer input.
+          if (disabled || dragRef.current) return;
+          onChange(Number(e.target.value));
+        }}
+        onBlur={(e) => {
+          if (dragRef.current) {
+            finishDrag(null);
+            return;
+          }
+          if (!disabled) {
+            onRelease?.(Number(e.currentTarget.value));
+          }
+        }}
+        onKeyUp={(e) => {
+          if (disabled) return;
+          if (RELEASE_KEYS.includes(e.key as (typeof RELEASE_KEYS)[number])) {
+            onRelease?.(Number(e.currentTarget.value));
+            onDragEnd?.();
+          }
+        }}
+      />
+    </div>
   );
 }

client/src/pages/eq/components/BrandDrawer.tsx

@@ -164,7 +164,7 @@ export function BrandDrawer({
         onClick={onClose}
       />
       <div
-        className="relative z-10 flex h-[58dvh] flex-shrink-0 flex-col overflow-hidden rounded-t-[18px] bg-white shadow-[0_-8px_32px_rgba(0,0,0,0.35)]"
+        className="relative z-10 flex h-[58vh] max-h-full flex-shrink-0 flex-col overflow-hidden rounded-t-[18px] bg-white shadow-[0_-8px_32px_rgba(0,0,0,0.35)] supports-[height:1dvh]:h-[58dvh]"
         onClick={(e) => e.stopPropagation()}
       >
         <div className="flex shrink-0 items-center justify-center pt-2 pb-1">