From 33b704bd5ac193e1d55d98631c6eedc230ceb6c2 Mon Sep 17 00:00:00 2001
From: zijunchiang <zijunchiang@users.noreply.gitee.com>
Date: Sun, 20 Sep 2026 19:36:41 +0800
Subject: [PATCH] =?UTF-8?q?V1.3.9:=20=E4=BA=8C=E7=BB=B4=E7=A0=81=E8=B7=9F?=
 =?UTF-8?q?=E9=9A=8F=E6=8E=A7=E5=88=B6=E5=B1=82=20+=20=E5=A3=B0=E9=9F=B3?=
 =?UTF-8?q?=E8=AE=BE=E7=BD=AE=E7=B2=BE=E7=AE=80=20+=20=E8=BF=9C=E7=A8=8B?=
 =?UTF-8?q?=E6=BB=91=E6=9D=86=E7=BB=91=E5=AE=9A=E4=BF=AE=E5=A4=8D=20+=20?=
 =?UTF-8?q?=E6=90=9C=E7=B4=A2=E6=8F=90=E9=80=9F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

1) 播放界面右上角二维码改为跟随控制层出现/隐藏
   setFullScreenChromeVisible() 里同步 fullScreenQrOverlay 可见性,
   updateFullScreenQrOverlay() 新建时按 fullScreenChromeVisible 初始化;
   删除按"手机是否在点歌"自动隐藏的 qrAutoHideMonitor,
   并删除扫码点歌弹窗里的"扫码点歌后自动隐藏播放界面二维码"提示词。

2) 声音设置删除音量调节与均衡器入口
   移除「歌曲最大音量」滑杆(及 pendingMusicVolume)与「均衡器入口」按钮,
   该弹窗只保留「切到点播歌曲时音量/原伴唱」这类策略选择; 音量与均衡器统一在「调音」弹窗。

3) 远程控制均衡器滑动点未完全绑定的真正原因: 滑杆被 <label> 包裹
   <label> 会把内部任意位置的点击转发给 range -> 点轨道/点文字就跳值。
   行容器 label -> div(.audio-row / .eq-band), CSS 相应改为类选择器;
   滑杆元素高度 4px -> 32px(触控目标), 细轨道改由 ::-webkit-slider-runnable-track 绘制,
   滑块 22px+5px 边框; attachThumbOnlyDrag 命中容差按 32px 滑块对齐(第二道防线)。

4) 远程搜歌界面: 歌曲移到左边、歌手移到右边
   同步把默认搜索方式改为「歌曲」(否则左侧高亮与实际模式不一致), 初始 placeholder 同步。

5) 搜索提速(基于对 991MB/67 万首 muse.db 的实测)
   实测: 中文 contains 热态 2~280ms; 拼音 GLOB 热态 0.2~150ms、冷态 1~15s;
   歌手 EXISTS 34~70ms。瓶颈是冷态 I/O 与重复查库, 因此:
   - 设备端新增 remoteSearchCache(LRU 24 条=4 查询×6 页, TTL 60s, 曲库刷新即清空),
     同一「类型+关键词+页码」直接复用 JSON, 翻页/重复搜索不再查库;
   - 手机端: AbortController 取消旧请求、同关键词不重复请求、首页返回后预热第 2 页、
     搜索期间暂停 1s 状态轮询避免抢 I/O;
   - 实测证明「一次多取几页」更慢(301 行 6.2s vs 21 行 0.7s), 故保持单页 LIMIT;
   - 均衡器卡片收起时跳过其 DOM 刷新(展开时补渲染)。

版本号 1.3.8 -> 1.3.9(versionCode 14 -> 15)。按约定本次不发布 Release, 仅本地打包测试。
---
 AGENTS.md                                     | 35 +++++--
 app/build.gradle                              |  4 +-
 app/src/main/assets/mobile/app.css            |  4 +-
 app/src/main/assets/mobile/app.js             | 57 +++++++++---
 app/src/main/assets/mobile/index.html         | 10 +-
 .../main/java/com/local/ktv/MainActivity.kt   | 91 +++++++------------
 6 files changed, 113 insertions(+), 88 deletions(-)

diff --git a/AGENTS.md b/AGENTS.md
index 21d1319..773f2de 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -108,7 +108,7 @@ $BT/apksigner verify 目标名.apk
 
 ### 版本号
 
-- `app/build.gradle`：`versionName "1.3.8"` / `versionCode 14`
+- `app/build.gradle`：`versionName "1.3.9"` / `versionCode 15`
 - App 内显示统一用纯版本号（不加 `(versionCode)` 括号）
 
 ## 三、关键实现约束（避免踩坑）
@@ -139,6 +139,29 @@ $BT/apksigner verify 目标名.apk
   客户端为 `MiliLog`（有界队列 + 后台线程 + 失败重试），调用点 `MiliLog.info/notice/warn/error`
   保持不变。启动上报（`reportDeviceBootInfo()`）只采集这 10 项：包名、版本号、安装时间、品牌、型号、
   设备名、Android 版本、CPU 架构、内核版本、屏幕分辨率
+- **播放界面右上角二维码**：跟随全屏控制层一起出现/隐藏 —— 在
+  `setFullScreenChromeVisible()` 里同步 `fullScreenQrOverlay` 的可见性，`updateFullScreenQrOverlay()`
+  新建时按 `fullScreenChromeVisible` 初始化。**不要**再按「手机是否在点歌」自动隐藏
+  （原 `qrAutoHideMonitor` 已删除，扫码弹窗里的对应提示文案也一并删除）
+- **远程页面滑杆(触控)**：`<input type="range">` **绝不能被 `<label>` 包裹** —— label 会把
+  内部任意位置的点击转发给 range，表现为"点轨道/点文字就跳值"。行容器用 `<div class="audio-row">`
+  / `<div class="eq-band">`；CSS 选择器也随之用类选择器而不是标签选择器。
+  另外滑杆元素本身高度设 32px（触控目标够大），视觉细轨道由
+  `::-webkit-slider-runnable-track` / `::-moz-range-track` 绘制，滑块 22px + 5px 边框。
+  `attachThumbOnlyDrag()` 仍作为第二道防线（命中滑块才放行原生拖动，容差按 32px 滑块算）
+- **远程搜索性能**：曲库 DB 有 **67 万首 / 约 1GB**（`muse.db`），搜索是 I/O 密集操作。
+  实测（同一台机器直连该 DB，`rec_score` 复合索引齐全）：
+  - 中文 `name_trim LIKE '%kw%'`：热态 **2~280ms**（走 `idx_rec_score` 顺序扫描 + 早停，无临时排序）
+  - 拼音 `name_cap/name_full GLOB 'kw*'`：热态 **0.2~150ms**（前缀范围扫描 + 临时 B-tree 排序；
+    `A*` 这类高频前缀会扫很多行），冷态（首次读 1GB 文件）可达 **1~15s**
+  - 歌手检索（`EXISTS` + singers LIKE）：热态 **34~70ms**
+  结论与对策：**瓶颈在冷态 I/O 与重复查询**，因此
+  1) 设备端加 `remoteSearchCache`（LRU 24 条 = 最近 4 个查询 × 6 页，TTL 60s，曲库刷新时清空），
+     同一「类型+关键词+页码」直接复用 JSON，翻页与重复搜索不再查库；
+  2) 手机端：搜索请求用 `AbortController` 取消旧请求、同关键词不重复请求、
+     首页返回后**预热第 2 页**（把设备缓存捂热）、搜索期间暂停 1s 的状态轮询避免抢 I/O。
+  ⚠️ 不要试图用「一次多取几页」来省请求：实测 `LIMIT 201` 的代价远高于 `LIMIT 21`
+  （`name_full GLOB` 301 行 6.2s vs 21 行 0.7s，冷态），会把体验做得更差
 - **焦点填充与「纯色遮罩层」**：`TvFocusStyler.install()` 会把背景整体换成**不透明**红→橙渐变，
   作为遥控器焦点/按下的反馈（`prepareTvFocusableTree(window.decorView)` 与对话框的
   `installTree(decorView)` 会遍历整棵树施加）。按钮/Tab/卡片/list 行需要这个反馈；但
@@ -154,9 +177,10 @@ $BT/apksigner verify 目标名.apk
   统一在 `applyPlaybackMode()` 内按线性系数施加到播放器（`KtvVideoView.setPlaybackVolume` /
   `selectAudioChannel`）与副音轨播放器（`vocalPlayer` / `embeddedVocalEngine`）。
   **严禁调用 `AudioManager.setStreamVolume` / `adjustStreamVolume` 修改系统音量**。
-  三条入口必须全部收敛到 `applyPlaybackMode()`：**「调音」弹窗**（`showTuningDialog()`，播放界面与
-  主界面右上角共用同一个弹窗）的音量横向控制杆、声音设置-歌曲最大音量、远程控制-音乐音量
-  （`remoteAudio()` 的 `musicVolume`）。曲线是纯衰减（100% 即 unity gain），不做系统级增益；
+  入口只有两处，且都必须收敛到 `applyPlaybackMode()`：**「调音」弹窗**（`showTuningDialog()`，
+  播放界面与主界面右上角共用同一个弹窗）的音量横向控制杆、远程控制-音乐音量
+  （`remoteAudio()` 的 `musicVolume`）。**声音设置弹窗里不再有音量滑杆与均衡器入口**
+  （避免同一功能两套入口），它只保留「切到点播歌曲时音量/原伴唱」这类策略选择。曲线是纯衰减（100% 即 unity gain），不做系统级增益；
   设备最终响度仍取决于系统音量，App 不再替用户改动它
 - **音频均衡器**：内核 `KtvEqualizer`（参考开源项目 OpenEQ，`Turbofan3360/OpenEQ`，GPL-3.0 的
   `EQUtils.kt`）——直接用系统 `android.media.audiofx.Equalizer`，**按设备真实频段数与增益范围自适应**
@@ -167,8 +191,7 @@ $BT/apksigner verify 目标名.apk
   `globalMix`（会话 0）是设备不支持按会话挂载时的显式开关，会影响本机所有声音，默认关闭。
   均衡器已并入**「调音」弹窗**（`showTuningDialog()`，自上而下：音量横向杆 → 均衡器开关 →
   预设 → EQ 频段横向杆，每个频段一行：频率 | 滑杆 | 增益），主界面右上角与播放界面「调音」
-  是同一个弹窗；另有声音设置入口与
-  远程点歌页面「均衡器」卡片（`PATCH /api/v1/player/equalizer`，状态随
+  是同一个弹窗；另有远程点歌页面「均衡器」卡片（`PATCH /api/v1/player/equalizer`，状态随
   `GET /api/v1/state` 的 `equalizer` 字段下发）。预设：App 内为「自定义/流行/摇滚/舞曲」
   （`appPresetNames()`，手动改频段即转「自定义」并自动保存），远程页面额外保留「标准」
   供「恢复标准」使用。设置持久化在 `KtvStore.eq*`；
diff --git a/app/build.gradle b/app/build.gradle
index 6fb124a..8d7dba1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,8 @@ android {
         applicationId "com.local.ktv"
         minSdk 21
         targetSdk 25
-        versionCode 14
-        versionName "1.3.8"
+        versionCode 15
+        versionName "1.3.9"
         ndk {
             // 双 ABI 打包:兼容 64 位(Exynos 1580 等 arm64-v8a)与 32 位设备(极米 Play 超越版
             // 的 Amlogic 950X2/S905X2 采用 32 位 Android 用户态,必须包含 armeabi-v7a,否则
diff --git a/app/src/main/assets/mobile/app.css b/app/src/main/assets/mobile/app.css
index 8f0306d..2a6e846 100644
--- a/app/src/main/assets/mobile/app.css
+++ b/app/src/main/assets/mobile/app.css
@@ -1,4 +1,4 @@
-:root{color-scheme:dark;--gold:#ffd56a;--gold2:#ffb23f;--violet:#9c4dff;--magenta:#ec5acc;--bg:#10031f;--glass:rgba(255,255,255,.075);--glass2:rgba(255,255,255,.115);--line:rgba(255,255,255,.12);--muted:#b9a9c9;--green:#62e6a5;--danger:#ff769a}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{background:#10031f}body{margin:0;min-height:100vh;color:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(155deg,#260943 0,#10031f 56%,#080110 100%);overflow-x:hidden}button,input{font:inherit}button{border:0;color:inherit;cursor:pointer}.aurora{position:fixed;border-radius:50%;filter:blur(70px);opacity:.48;pointer-events:none}.aurora-one{width:280px;height:280px;background:#7d20d7;right:-110px;top:-80px}.aurora-two{width:260px;height:260px;background:#d82c9e;left:-150px;bottom:80px;opacity:.23}.mesh{position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,#000,transparent 80%)}.app-shell{position:relative;z-index:1;width:min(100%,520px);margin:auto;min-height:100vh;padding:env(safe-area-inset-top) 0 calc(92px + env(safe-area-inset-bottom))}.topbar{height:94px;padding:18px 20px 12px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px}.brand-mark{position:relative;width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#fff2aa,#ffba44);box-shadow:0 8px 25px rgba(255,190,65,.25);display:flex;align-items:end;justify-content:center;gap:3px;padding:10px}.brand-mark i{display:block;width:4px;border-radius:3px;background:#6a2383}.brand-mark i:nth-child(1){height:12px}.brand-mark i:nth-child(2){height:22px}.brand-mark i:nth-child(3){height:16px}.brand h1{margin:0;font-size:21px;letter-spacing:.5px}.brand h1 em{font-style:italic;color:var(--gold);font-size:15px}.brand p{margin:5px 0 0;color:#c9b9d6;font-size:11px}.brand p span{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 9px var(--green);margin-right:5px}.queue-badge{display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(255,213,106,.16),rgba(255,165,55,.06));border:1px solid rgba(255,213,106,.2);padding:8px 11px;border-radius:16px}.queue-badge b{min-width:24px;height:24px;padding:0 5px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#431440;font-size:12px}.queue-badge span{color:#f7dfaa;font-size:11px}.page{display:none;padding:8px 18px 22px;animation:fadeUp .25s ease}.page.active{display:block}@keyframes fadeUp{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}.hero-card{position:relative;display:flex;align-items:center;gap:18px;min-height:150px;padding:22px;overflow:hidden;border-radius:28px;background:linear-gradient(135deg,rgba(141,49,218,.64),rgba(95,28,147,.42) 56%,rgba(240,78,177,.23));border:1px solid rgba(255,255,255,.16);box-shadow:0 20px 50px rgba(3,0,12,.28),inset 0 1px rgba(255,255,255,.12)}.hero-glow{position:absolute;width:160px;height:160px;border-radius:50%;background:#f058bd;filter:blur(60px);right:-70px;top:-80px;opacity:.42}.album{position:relative;flex:0 0 94px;width:94px;height:94px;border-radius:23px;background:linear-gradient(145deg,#f1a059,#ce3ac1 48%,#6532c8);padding:7px;box-shadow:0 12px 30px rgba(20,0,35,.4)}.disc{height:100%;border-radius:18px;display:grid;place-items:center;background:repeating-radial-gradient(circle,#1d0e2b 0 4px,#2b143b 5px 8px)}.disc:after{content:"";position:absolute;width:24px;height:24px;border-radius:50%;background:linear-gradient(145deg,var(--gold),#e977ad)}.disc span{font-size:24px;color:white;z-index:2}.hero-copy{position:relative;min-width:0;flex:1}.eyebrow{font-size:11px;color:#eadff3;letter-spacing:1px}.playing-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);margin-right:6px}.hero-copy h2{font-size:25px;margin:10px 0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hero-copy p{margin:0;color:#d6c3e4;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sound-wave{display:flex;align-items:end;gap:3px;height:16px;margin-top:14px}.sound-wave i{width:3px;border-radius:3px;background:linear-gradient(to top,var(--gold2),#fff1a2);animation:wave .9s ease-in-out infinite alternate}.sound-wave i:nth-child(1),.sound-wave i:nth-child(5){height:5px}.sound-wave i:nth-child(2),.sound-wave i:nth-child(6){height:10px;animation-delay:.2s}.sound-wave i:nth-child(3){height:15px;animation-delay:.4s}.sound-wave i:nth-child(4),.sound-wave i:nth-child(7){height:8px;animation-delay:.1s}@keyframes wave{to{height:4px}}.controls{display:grid;grid-template-columns:1fr 1.18fr 1fr;align-items:center;gap:14px;padding:23px 8px 19px}.controls button{height:72px;border-radius:23px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#dcd0e7;box-shadow:inset 0 1px rgba(255,255,255,.05)}.controls .control-icon{font-size:23px;line-height:24px;font-weight:300}.controls button>span:last-child{font-size:11px;margin-top:7px}.controls .primary{height:82px;border-radius:27px;background:linear-gradient(145deg,#b551ff,#7028d8);color:#fff;box-shadow:0 13px 30px rgba(119,35,219,.4),inset 0 1px rgba(255,255,255,.25)}.glass-card{background:linear-gradient(145deg,rgba(255,255,255,.105),rgba(255,255,255,.05));border:1px solid var(--line);border-radius:24px;box-shadow:inset 0 1px rgba(255,255,255,.08)}.audio-panel{padding:18px}.panel-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.panel-title>div{display:flex;gap:9px;align-items:center}.panel-title b{font-size:15px}.panel-title small{color:#9f8eb0;font-size:10px}.tiny-icon{color:var(--gold);font-size:17px}.seg{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:5px;background:rgba(9,1,18,.38);border:1px solid rgba(255,255,255,.05);border-radius:17px}.seg button{height:46px;border-radius:13px;background:transparent;color:#a898b7}.seg button span{display:inline-grid;place-items:center;width:24px;height:24px;margin-right:7px;border-radius:8px;background:rgba(255,255,255,.08);font-size:11px}.seg button.active{color:#36123d;background:linear-gradient(135deg,#ffdf7f,#ffb84a);font-weight:700;box-shadow:0 7px 18px rgba(255,184,74,.18)}.seg button.active span{background:rgba(62,13,57,.13)}.audio-panel label{display:grid;grid-template-columns:1fr auto;align-items:center;margin-top:19px;font-size:13px;color:#e9dfef}.audio-panel label>span{display:flex;align-items:center}.audio-panel label>b{color:var(--gold);font-size:12px}.audio-panel label b em{font-style:normal;font-size:15px}.volume-icon{display:inline-grid;place-items:center;width:27px;height:27px;margin-right:9px;border-radius:9px;background:rgba(168,77,255,.16);color:#ca8cff;font-style:normal}.volume-icon.mic{font-size:8px;color:#ff82cc}input[type=range]{grid-column:1/3;width:100%;height:4px;margin:15px 0 2px;appearance:none;border-radius:8px;background:linear-gradient(90deg,#a649f3,#e457c1);accent-color:var(--gold)}input[type=range]::-webkit-slider-thumb{appearance:none;width:19px;height:19px;border-radius:50%;background:#fff;border:5px solid var(--gold);box-shadow:0 3px 10px rgba(0,0,0,.35)}.next-card{display:flex;align-items:center;gap:12px;padding:15px 16px;margin-top:14px;border-radius:19px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.08)}.next-number{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:rgba(255,213,106,.12);color:var(--gold);font-size:11px}.next-card>div:nth-child(2){min-width:0;flex:1}.next-card small{display:block;color:#9885a8;font-size:10px;margin-bottom:4px}.next-card b{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.next-card button{background:transparent;color:var(--gold);font-size:11px}.next-card button span{font-size:17px;margin-left:3px}.page-heading{display:flex;align-items:end;justify-content:space-between;padding:7px 2px 18px}.page-heading p{margin:0 0 5px;color:#a378c7;letter-spacing:2px;font-size:9px}.page-heading h2{font-size:25px;margin:0}.page-heading>span{color:#a898b7;font-size:11px}.search-box{display:flex;align-items:center;gap:7px;height:58px;padding:6px 6px 6px 16px;border-radius:19px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);box-shadow:0 12px 28px rgba(0,0,0,.13)}.search-icon{width:16px;height:16px;border:2px solid #bfa9cf;border-radius:50%;position:relative}.search-icon:after{content:"";position:absolute;width:7px;height:2px;background:#bfa9cf;right:-5px;bottom:-3px;transform:rotate(45deg);border-radius:2px}.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:white;font-size:14px}.search-box input::placeholder{color:#9484a4}.search-box button,.more{height:45px;padding:0 20px;border-radius:14px;background:linear-gradient(135deg,#a74df5,#7130d5);font-weight:700;box-shadow:0 7px 17px rgba(120,45,210,.25)}.hot-block{margin-top:25px}.block-title{display:flex;align-items:center;justify-content:space-between}.block-title h3{font-size:16px;margin:0}.block-title span{font-size:10px;color:#907e9f}.chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.chips button{height:51px;padding:0 14px;text-align:left;border-radius:16px;background:linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.08);color:#e7dcec}.chips button b{display:inline-block;margin-right:10px;color:#c17af6;font-size:10px}.list{margin-top:15px}.song{display:flex;align-items:center;gap:12px;min-height:70px;padding:11px 10px;margin-bottom:9px;border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.085)}.song-index{flex:0 0 37px;width:37px;height:37px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(156,77,255,.25),rgba(236,90,204,.13));color:#c991f3;font-size:11px}.song .info{flex:1;min-width:0}.song .info b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song .info p{margin:5px 0 0;color:#9e8cad;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song .playing{display:inline-block;margin-bottom:5px;padding:3px 7px;border-radius:8px;color:#6ff0ac;background:rgba(76,225,150,.1);font-size:9px}.song button{height:38px;padding:0 13px;border-radius:12px;font-size:11px}.song .order,.song .top{background:linear-gradient(135deg,rgba(255,213,106,.2),rgba(255,176,57,.1));border:1px solid rgba(255,213,106,.2);color:var(--gold)}.song .order:disabled{color:var(--green);background:rgba(98,230,165,.1);border-color:rgba(98,230,165,.15)}.song .delete{width:38px;padding:0;background:rgba(255,118,154,.1);color:var(--danger)}.queue-tip{padding:11px 13px;border-radius:14px;background:rgba(255,213,106,.07);color:#c9b687;font-size:10px}.queue-tip span{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:7px;border-radius:50%;background:rgba(255,213,106,.14);color:var(--gold)}.more{width:100%;margin:17px 0;color:#fff;border:0}.empty{padding:80px 15px;text-align:center;color:#927fa2}.empty:before{content:"♫";display:grid;place-items:center;width:58px;height:58px;margin:0 auto 14px;border-radius:19px;background:rgba(255,255,255,.06);color:#a970d3;font-size:25px}.hidden{display:none!important}nav{position:fixed;z-index:8;left:50%;bottom:0;transform:translateX(-50%);width:min(100%,520px);height:78px;padding:5px 15px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(3,1fr);background:rgba(14,3,27,.9);backdrop-filter:blur(22px);border-top:1px solid rgba(255,255,255,.09)}nav button{position:relative;background:transparent;color:#887897;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-size:10px}nav button.active{color:var(--gold)}nav i{display:block;position:relative;width:21px;height:21px}.nav-remote:before{content:"";position:absolute;inset:2px 4px;border:2px solid currentColor;border-radius:6px}.nav-remote:after{content:"";position:absolute;width:4px;height:4px;border-radius:50%;background:currentColor;left:9px;top:8px}.nav-search{border:2px solid currentColor;border-radius:50%;width:16px;height:16px;margin-bottom:5px}.nav-search:after{content:"";position:absolute;width:8px;height:2px;background:currentColor;right:-6px;bottom:-4px;transform:rotate(45deg)}.nav-queue:before{content:"";position:absolute;inset:3px 2px;border-top:2px solid currentColor;border-bottom:2px solid currentColor;box-shadow:0 5px 0 -3px currentColor}.nav-queue:after{content:"";position:absolute;width:3px;height:3px;left:-3px;top:2px;background:currentColor;box-shadow:0 7px currentColor,0 14px currentColor}nav button>b{position:absolute;top:3px;left:calc(50% + 8px);min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:#ed4f86;color:#fff;font-size:9px;display:grid;place-items:center}.offline{position:fixed;z-index:20;top:0;left:0;right:0;padding:9px;background:rgba(190,43,86,.96);text-align:center;font-size:11px}.offline span{display:inline-block;width:6px;height:6px;margin-right:7px;border-radius:50%;background:#fff}#toast{position:fixed;z-index:30;left:50%;bottom:93px;transform:translateX(-50%) translateY(18px);padding:11px 18px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(38,13,55,.96);box-shadow:0 12px 30px rgba(0,0,0,.3);opacity:0;transition:.22s;white-space:nowrap;font-size:12px}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}@media(max-width:360px){.topbar{padding-left:15px;padding-right:15px}.page{padding-left:14px;padding-right:14px}.hero-card{padding:17px}.album{flex-basis:78px;width:78px;height:78px}.hero-copy h2{font-size:21px}.controls{gap:9px}.song{gap:8px}.song button{padding:0 9px}}
+:root{color-scheme:dark;--gold:#ffd56a;--gold2:#ffb23f;--violet:#9c4dff;--magenta:#ec5acc;--bg:#10031f;--glass:rgba(255,255,255,.075);--glass2:rgba(255,255,255,.115);--line:rgba(255,255,255,.12);--muted:#b9a9c9;--green:#62e6a5;--danger:#ff769a}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{background:#10031f}body{margin:0;min-height:100vh;color:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(155deg,#260943 0,#10031f 56%,#080110 100%);overflow-x:hidden}button,input{font:inherit}button{border:0;color:inherit;cursor:pointer}.aurora{position:fixed;border-radius:50%;filter:blur(70px);opacity:.48;pointer-events:none}.aurora-one{width:280px;height:280px;background:#7d20d7;right:-110px;top:-80px}.aurora-two{width:260px;height:260px;background:#d82c9e;left:-150px;bottom:80px;opacity:.23}.mesh{position:fixed;inset:0;pointer-events:none;opacity:.22;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,#000,transparent 80%)}.app-shell{position:relative;z-index:1;width:min(100%,520px);margin:auto;min-height:100vh;padding:env(safe-area-inset-top) 0 calc(92px + env(safe-area-inset-bottom))}.topbar{height:94px;padding:18px 20px 12px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px}.brand-mark{position:relative;width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#fff2aa,#ffba44);box-shadow:0 8px 25px rgba(255,190,65,.25);display:flex;align-items:end;justify-content:center;gap:3px;padding:10px}.brand-mark i{display:block;width:4px;border-radius:3px;background:#6a2383}.brand-mark i:nth-child(1){height:12px}.brand-mark i:nth-child(2){height:22px}.brand-mark i:nth-child(3){height:16px}.brand h1{margin:0;font-size:21px;letter-spacing:.5px}.brand h1 em{font-style:italic;color:var(--gold);font-size:15px}.brand p{margin:5px 0 0;color:#c9b9d6;font-size:11px}.brand p span{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 9px var(--green);margin-right:5px}.queue-badge{display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(255,213,106,.16),rgba(255,165,55,.06));border:1px solid rgba(255,213,106,.2);padding:8px 11px;border-radius:16px}.queue-badge b{min-width:24px;height:24px;padding:0 5px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#431440;font-size:12px}.queue-badge span{color:#f7dfaa;font-size:11px}.page{display:none;padding:8px 18px 22px;animation:fadeUp .25s ease}.page.active{display:block}@keyframes fadeUp{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}.hero-card{position:relative;display:flex;align-items:center;gap:18px;min-height:150px;padding:22px;overflow:hidden;border-radius:28px;background:linear-gradient(135deg,rgba(141,49,218,.64),rgba(95,28,147,.42) 56%,rgba(240,78,177,.23));border:1px solid rgba(255,255,255,.16);box-shadow:0 20px 50px rgba(3,0,12,.28),inset 0 1px rgba(255,255,255,.12)}.hero-glow{position:absolute;width:160px;height:160px;border-radius:50%;background:#f058bd;filter:blur(60px);right:-70px;top:-80px;opacity:.42}.album{position:relative;flex:0 0 94px;width:94px;height:94px;border-radius:23px;background:linear-gradient(145deg,#f1a059,#ce3ac1 48%,#6532c8);padding:7px;box-shadow:0 12px 30px rgba(20,0,35,.4)}.disc{height:100%;border-radius:18px;display:grid;place-items:center;background:repeating-radial-gradient(circle,#1d0e2b 0 4px,#2b143b 5px 8px)}.disc:after{content:"";position:absolute;width:24px;height:24px;border-radius:50%;background:linear-gradient(145deg,var(--gold),#e977ad)}.disc span{font-size:24px;color:white;z-index:2}.hero-copy{position:relative;min-width:0;flex:1}.eyebrow{font-size:11px;color:#eadff3;letter-spacing:1px}.playing-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);margin-right:6px}.hero-copy h2{font-size:25px;margin:10px 0 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.hero-copy p{margin:0;color:#d6c3e4;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sound-wave{display:flex;align-items:end;gap:3px;height:16px;margin-top:14px}.sound-wave i{width:3px;border-radius:3px;background:linear-gradient(to top,var(--gold2),#fff1a2);animation:wave .9s ease-in-out infinite alternate}.sound-wave i:nth-child(1),.sound-wave i:nth-child(5){height:5px}.sound-wave i:nth-child(2),.sound-wave i:nth-child(6){height:10px;animation-delay:.2s}.sound-wave i:nth-child(3){height:15px;animation-delay:.4s}.sound-wave i:nth-child(4),.sound-wave i:nth-child(7){height:8px;animation-delay:.1s}@keyframes wave{to{height:4px}}.controls{display:grid;grid-template-columns:1fr 1.18fr 1fr;align-items:center;gap:14px;padding:23px 8px 19px}.controls button{height:72px;border-radius:23px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#dcd0e7;box-shadow:inset 0 1px rgba(255,255,255,.05)}.controls .control-icon{font-size:23px;line-height:24px;font-weight:300}.controls button>span:last-child{font-size:11px;margin-top:7px}.controls .primary{height:82px;border-radius:27px;background:linear-gradient(145deg,#b551ff,#7028d8);color:#fff;box-shadow:0 13px 30px rgba(119,35,219,.4),inset 0 1px rgba(255,255,255,.25)}.glass-card{background:linear-gradient(145deg,rgba(255,255,255,.105),rgba(255,255,255,.05));border:1px solid var(--line);border-radius:24px;box-shadow:inset 0 1px rgba(255,255,255,.08)}.audio-panel{padding:18px}.panel-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.panel-title>div{display:flex;gap:9px;align-items:center}.panel-title b{font-size:15px}.panel-title small{color:#9f8eb0;font-size:10px}.tiny-icon{color:var(--gold);font-size:17px}.seg{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:5px;background:rgba(9,1,18,.38);border:1px solid rgba(255,255,255,.05);border-radius:17px}.seg button{height:46px;border-radius:13px;background:transparent;color:#a898b7}.seg button span{display:inline-grid;place-items:center;width:24px;height:24px;margin-right:7px;border-radius:8px;background:rgba(255,255,255,.08);font-size:11px}.seg button.active{color:#36123d;background:linear-gradient(135deg,#ffdf7f,#ffb84a);font-weight:700;box-shadow:0 7px 18px rgba(255,184,74,.18)}.seg button.active span{background:rgba(62,13,57,.13)}.audio-row{display:grid;grid-template-columns:1fr auto;align-items:center;margin-top:19px;font-size:13px;color:#e9dfef}.audio-row>span{display:flex;align-items:center}.audio-row>b{color:var(--gold);font-size:12px}.audio-row b em{font-style:normal;font-size:15px}.volume-icon{display:inline-grid;place-items:center;width:27px;height:27px;margin-right:9px;border-radius:9px;background:rgba(168,77,255,.16);color:#ca8cff;font-style:normal}.volume-icon.mic{font-size:8px;color:#ff82cc}input[type=range]{grid-column:1/3;width:100%;height:32px;margin:4px 0 0;appearance:none;background:transparent;accent-color:var(--gold);touch-action:pan-y}input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:8px;background:linear-gradient(90deg,#a649f3,#e457c1)}input[type=range]::-moz-range-track{height:6px;border-radius:8px;background:linear-gradient(90deg,#a649f3,#e457c1)}input[type=range]::-webkit-slider-thumb{appearance:none;width:22px;height:22px;margin-top:-8px;border-radius:50%;background:#fff;border:5px solid var(--gold);box-shadow:0 3px 10px rgba(0,0,0,.35)}input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:#fff;border:5px solid var(--gold);box-shadow:0 3px 10px rgba(0,0,0,.35)}.next-card{display:flex;align-items:center;gap:12px;padding:15px 16px;margin-top:14px;border-radius:19px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.08)}.next-number{width:34px;height:34px;display:grid;place-items:center;border-radius:11px;background:rgba(255,213,106,.12);color:var(--gold);font-size:11px}.next-card>div:nth-child(2){min-width:0;flex:1}.next-card small{display:block;color:#9885a8;font-size:10px;margin-bottom:4px}.next-card b{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.next-card button{background:transparent;color:var(--gold);font-size:11px}.next-card button span{font-size:17px;margin-left:3px}.page-heading{display:flex;align-items:end;justify-content:space-between;padding:7px 2px 18px}.page-heading p{margin:0 0 5px;color:#a378c7;letter-spacing:2px;font-size:9px}.page-heading h2{font-size:25px;margin:0}.page-heading>span{color:#a898b7;font-size:11px}.search-box{display:flex;align-items:center;gap:7px;height:58px;padding:6px 6px 6px 16px;border-radius:19px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);box-shadow:0 12px 28px rgba(0,0,0,.13)}.search-icon{width:16px;height:16px;border:2px solid #bfa9cf;border-radius:50%;position:relative}.search-icon:after{content:"";position:absolute;width:7px;height:2px;background:#bfa9cf;right:-5px;bottom:-3px;transform:rotate(45deg);border-radius:2px}.search-box input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:white;font-size:14px}.search-box input::placeholder{color:#9484a4}.search-box button,.more{height:45px;padding:0 20px;border-radius:14px;background:linear-gradient(135deg,#a74df5,#7130d5);font-weight:700;box-shadow:0 7px 17px rgba(120,45,210,.25)}.hot-block{margin-top:25px}.block-title{display:flex;align-items:center;justify-content:space-between}.block-title h3{font-size:16px;margin:0}.block-title span{font-size:10px;color:#907e9f}.chips{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.chips button{height:51px;padding:0 14px;text-align:left;border-radius:16px;background:linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.08);color:#e7dcec}.chips button b{display:inline-block;margin-right:10px;color:#c17af6;font-size:10px}.list{margin-top:15px}.song{display:flex;align-items:center;gap:12px;min-height:70px;padding:11px 10px;margin-bottom:9px;border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.085),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.085)}.song-index{flex:0 0 37px;width:37px;height:37px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(156,77,255,.25),rgba(236,90,204,.13));color:#c991f3;font-size:11px}.song .info{flex:1;min-width:0}.song .info b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song .info p{margin:5px 0 0;color:#9e8cad;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song .playing{display:inline-block;margin-bottom:5px;padding:3px 7px;border-radius:8px;color:#6ff0ac;background:rgba(76,225,150,.1);font-size:9px}.song button{height:38px;padding:0 13px;border-radius:12px;font-size:11px}.song .order,.song .top{background:linear-gradient(135deg,rgba(255,213,106,.2),rgba(255,176,57,.1));border:1px solid rgba(255,213,106,.2);color:var(--gold)}.song .order:disabled{color:var(--green);background:rgba(98,230,165,.1);border-color:rgba(98,230,165,.15)}.song .delete{width:38px;padding:0;background:rgba(255,118,154,.1);color:var(--danger)}.queue-tip{padding:11px 13px;border-radius:14px;background:rgba(255,213,106,.07);color:#c9b687;font-size:10px}.queue-tip span{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:7px;border-radius:50%;background:rgba(255,213,106,.14);color:var(--gold)}.more{width:100%;margin:17px 0;color:#fff;border:0}.empty{padding:80px 15px;text-align:center;color:#927fa2}.empty:before{content:"♫";display:grid;place-items:center;width:58px;height:58px;margin:0 auto 14px;border-radius:19px;background:rgba(255,255,255,.06);color:#a970d3;font-size:25px}.hidden{display:none!important}nav{position:fixed;z-index:8;left:50%;bottom:0;transform:translateX(-50%);width:min(100%,520px);height:78px;padding:5px 15px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(3,1fr);background:rgba(14,3,27,.9);backdrop-filter:blur(22px);border-top:1px solid rgba(255,255,255,.09)}nav button{position:relative;background:transparent;color:#887897;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-size:10px}nav button.active{color:var(--gold)}nav i{display:block;position:relative;width:21px;height:21px}.nav-remote:before{content:"";position:absolute;inset:2px 4px;border:2px solid currentColor;border-radius:6px}.nav-remote:after{content:"";position:absolute;width:4px;height:4px;border-radius:50%;background:currentColor;left:9px;top:8px}.nav-search{border:2px solid currentColor;border-radius:50%;width:16px;height:16px;margin-bottom:5px}.nav-search:after{content:"";position:absolute;width:8px;height:2px;background:currentColor;right:-6px;bottom:-4px;transform:rotate(45deg)}.nav-queue:before{content:"";position:absolute;inset:3px 2px;border-top:2px solid currentColor;border-bottom:2px solid currentColor;box-shadow:0 5px 0 -3px currentColor}.nav-queue:after{content:"";position:absolute;width:3px;height:3px;left:-3px;top:2px;background:currentColor;box-shadow:0 7px currentColor,0 14px currentColor}nav button>b{position:absolute;top:3px;left:calc(50% + 8px);min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:#ed4f86;color:#fff;font-size:9px;display:grid;place-items:center}.offline{position:fixed;z-index:20;top:0;left:0;right:0;padding:9px;background:rgba(190,43,86,.96);text-align:center;font-size:11px}.offline span{display:inline-block;width:6px;height:6px;margin-right:7px;border-radius:50%;background:#fff}#toast{position:fixed;z-index:30;left:50%;bottom:93px;transform:translateX(-50%) translateY(18px);padding:11px 18px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(38,13,55,.96);box-shadow:0 12px 30px rgba(0,0,0,.3);opacity:0;transition:.22s;white-space:nowrap;font-size:12px}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}@media(max-width:360px){.topbar{padding-left:15px;padding-right:15px}.page{padding-left:14px;padding-right:14px}.hero-card{padding:17px}.album{flex-basis:78px;width:78px;height:78px}.hero-copy h2{font-size:21px}.controls{gap:9px}.song{gap:8px}.song button{padding:0 9px}}
 
 /* Mobile song search and hot-ranking additions. */
 .search-mode{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:10px;padding:5px;border-radius:16px;background:rgba(9,1,18,.38);border:1px solid rgba(255,255,255,.06)}
@@ -16,6 +16,6 @@
 .rank-pager b{min-width:64px;text-align:center;color:#b9a9c9;font-size:11px}
 .empty.compact{padding:42px 15px}
 
-.audio-panel label.mic-hw{opacity:.55}.audio-panel label.mic-hw>small{grid-column:1/3;color:#9f8eb0;font-size:10px;margin-top:2px}.audio-panel label.mic-hw input[type=range]{background:rgba(255,255,255,.14)}.eq-panel{padding:18px;margin-top:14px}.eq-switch{grid-template-columns:1fr 1fr}.eq-bands{margin-top:6px}.eq-band{display:grid;grid-template-columns:1fr auto;align-items:center;margin-top:14px;font-size:12px;color:#e9dfef}.eq-band>span{color:#cbbad9}.eq-band>b{color:var(--gold);font-size:12px}.eq-band b em{font-style:normal;font-size:14px}.eq-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:17px}.eq-preset{height:40px;border-radius:13px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);color:#d9cce4;font-size:12px}.eq-preset.active{color:#36123d;background:linear-gradient(135deg,#ffdf7f,#ffb84a);font-weight:700}.eq-hint{margin:14px 0 0;color:#9f8eb0;font-size:10px;line-height:1.5}
+.audio-row.mic-hw{opacity:.55}.audio-row.mic-hw>small{grid-column:1/3;color:#9f8eb0;font-size:10px;margin-top:2px}.audio-row.mic-hw input[type=range]::-webkit-slider-runnable-track{background:rgba(255,255,255,.14)}.eq-panel{padding:18px;margin-top:14px}.eq-switch{grid-template-columns:1fr 1fr}.eq-bands{margin-top:6px}.eq-band{display:grid;grid-template-columns:1fr auto;align-items:center;margin-top:14px;font-size:12px;color:#e9dfef}.eq-band>span{color:#cbbad9}.eq-band>b{color:var(--gold);font-size:12px}.eq-band b em{font-style:normal;font-size:14px}.eq-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:17px}.eq-preset{height:40px;border-radius:13px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);color:#d9cce4;font-size:12px}.eq-preset.active{color:#36123d;background:linear-gradient(135deg,#ffdf7f,#ffb84a);font-weight:700}.eq-hint{margin:14px 0 0;color:#9f8eb0;font-size:10px;line-height:1.5}
 .eq-title{width:100%;padding:0;margin:0;background:transparent;border:0;text-align:left;cursor:pointer}.eq-title-right{display:flex;align-items:center;gap:8px}.eq-chevron{font-style:normal;color:#c9a8e8;font-size:13px;transition:transform .2s}.eq-title[aria-expanded=true] .eq-chevron{transform:rotate(180deg)}.eq-body{margin-top:4px}
 input[type=range]::-webkit-slider-thumb{cursor:grab}input[type=range]::-webkit-slider-thumb:active{cursor:grabbing}input[type=range]::-moz-range-thumb{cursor:grab}
diff --git a/app/src/main/assets/mobile/app.js b/app/src/main/assets/mobile/app.js
index 89c93b0..958b4cc 100644
--- a/app/src/main/assets/mobile/app.js
+++ b/app/src/main/assets/mobile/app.js
@@ -1,9 +1,10 @@
 const $ = (selector) => document.querySelector(selector);
 const $$ = (selector) => document.querySelectorAll(selector);
 const uiState = {
-  page: 1, query: "", searchMode: "singer", busy: false,
+  page: 1, query: "", searchMode: "song", busy: false,
   hotPage: 1, hotPageSize: 10, hotBusy: false,
-  visible: true, connected: false, eqEnabled: false
+  visible: true, connected: false, eqEnabled: false,
+  equalizer: null, searchAbort: null, searchKey: ""
 };
 
 function escapeHtml(value) {
@@ -81,7 +82,9 @@ async function refresh() {
     $("#original").classList.toggle("active", data.vocalMode === "original");
     $("#accompany").classList.toggle("active", data.vocalMode !== "original");
     $("#nextSong").textContent = data.next?.title || "队列为空";
-    renderEqualizer(data.equalizer);
+    // 均衡器卡片默认收起: 收起时跳过 DOM 更新(避免每秒轮询重绘), 展开时再渲染一次。
+    uiState.equalizer = data.equalizer;
+    if (!$("#eqBody")?.classList.contains("hidden")) renderEqualizer(data.equalizer);
   } catch (_) {
     setConnected(false);
   }
@@ -107,7 +110,7 @@ function renderEqualizer(eq) {
   const bands = Array.isArray(eq.bands) ? eq.bands : [];
   const container = $("#eqBands");
   if (container && container.childElementCount !== bands.length) {
-    container.innerHTML = bands.map((band, index) => `<label class="eq-band"><span>${escapeHtml(band.label)}Hz</span><b><em id="eqValue${index}">${Number(band.level).toFixed(1)}</em>dB</b><input id="eqBand${index}" type="range" min="${eq.minDb}" max="${eq.maxDb}" step="1" value="${band.level}"></label>`).join("");
+    container.innerHTML = bands.map((band, index) => `<div class="eq-band"><span>${escapeHtml(band.label)}Hz</span><b><em id="eqValue${index}">${Number(band.level).toFixed(1)}</em>dB</b><input id="eqBand${index}" type="range" min="${eq.minDb}" max="${eq.maxDb}" step="1" value="${band.level}"></div>`).join("");
     bands.forEach((band, index) => {
       const input = $("#eqBand" + index);
       if (!input) return;
@@ -160,7 +163,7 @@ function attachThumbOnlyDrag(input) {
     const x = point.clientX;
     const y = point.clientY;
     // 粗略还原轨道几何：控件左右各留半个滑块宽度。
-    const thumb = 22;
+    const thumb = 32;
     const trackLeft = rect.left + thumb / 2;
     const trackRight = rect.right - thumb / 2;
     const span = trackRight - trackLeft;
@@ -200,31 +203,52 @@ async function updateAudio(values) {
 }
 
 async function search(reset = true) {
-  if (uiState.busy) return;
   if (reset) {
-    uiState.page = 1;
-    uiState.query = $("#query").value.trim();
-    if (!uiState.query) {
+    const nextQuery = $("#query").value.trim();
+    if (!nextQuery) {
       toast(`请输入${uiState.searchMode === "singer" ? "歌手" : "歌曲"}名称`);
       $("#query").focus();
       return;
     }
+    // 同一关键词+同一搜索方式且结果已渲染 → 不重复请求设备(设备端也要查 1GB 曲库)。
+    const key = `${uiState.searchMode}|${nextQuery}`;
+    if (key === uiState.searchKey && $("#results").childElementCount) {
+      $("#searchResultBlock").scrollIntoView({ behavior: "smooth", block: "start" });
+      return;
+    }
+    uiState.page = 1;
+    uiState.query = nextQuery;
+    uiState.searchKey = key;
     $("#results").innerHTML = "";
     $("#searchResultBlock").classList.remove("hidden");
     $("#resultTitle").textContent = uiState.searchMode === "singer" ? "歌手搜索结果" : "歌曲搜索结果";
     $("#resultSummary").textContent = `正在搜索“${uiState.query}”`;
+    $("#more").classList.add("hidden");
+    if (uiState.searchAbort) uiState.searchAbort.abort();
+    uiState.searchAbort = new AbortController();
   }
+  const signal = uiState.searchAbort ? uiState.searchAbort.signal : undefined;
+  const requestedPage = uiState.page;
   uiState.busy = true;
   try {
-    const data = await api(`/api/v1/songs?q=${encodeURIComponent(uiState.query)}&type=${uiState.searchMode}&page=${uiState.page}&pageSize=20`);
-    const rows = (data.songs || []).map((song, index) => songRow(song, false, false, (uiState.page - 1) * 20 + index)).join("");
+    const data = await api(`/api/v1/songs?q=${encodeURIComponent(uiState.query)}&type=${uiState.searchMode}&page=${requestedPage}&pageSize=20`, { signal });
+    const rows = (data.songs || []).map((song, index) => songRow(song, false, false, (requestedPage - 1) * 20 + index)).join("");
     if (rows) $("#results").insertAdjacentHTML("beforeend", rows);
     else if (reset) $("#results").innerHTML = '<div class="empty">没有找到相关歌曲<br><small>请更换关键词后重试</small></div>';
     $("#resultSummary").textContent = `“${uiState.query}”${data.hasMore ? "，还有更多" : ""}`;
     $("#more").classList.toggle("hidden", !data.hasMore);
-    uiState.page += 1;
-  } catch (error) { toast(error.message); }
-  finally { uiState.busy = false; }
+    uiState.page = requestedPage + 1;
+    // 预热下一页: 设备端会把它缓存下来, 用户点「更多」时基本瞬时。
+    if (requestedPage === 1 && data.hasMore) {
+      window.setTimeout(() => {
+        api(`/api/v1/songs?q=${encodeURIComponent(uiState.query)}&type=${uiState.searchMode}&page=2&pageSize=20`)
+          .catch(() => {});
+      }, 500);
+    }
+  } catch (error) {
+    // 被下一次搜索取消属于正常情况, 不弹提示。
+    if (error && error.name !== "AbortError") toast(error.message);
+  } finally { uiState.busy = false; }
 }
 
 async function loadHot(page) {
@@ -317,8 +341,11 @@ $("#eqCollapse")?.addEventListener("click", () => {
   if (!body) return;
   const collapsed = body.classList.toggle("hidden");
   $("#eqCollapse").setAttribute("aria-expanded", collapsed ? "false" : "true");
+  // 展开时补一次渲染(收起期间轮询跳过了 EQ 的 DOM 更新)。
+  if (!collapsed) renderEqualizer(uiState.equalizer);
 });
 document.addEventListener("visibilitychange", () => { uiState.visible = !document.hidden; if (uiState.visible) refresh(); });
-window.setInterval(() => { if (uiState.visible) refresh(); }, 1000);
+// 搜索进行中暂停状态轮询: 避免与设备端 1GB 曲库查询抢 I/O。
+window.setInterval(() => { if (uiState.visible && !uiState.busy) refresh(); }, 1000);
 refresh();
 loadHot(1);
diff --git a/app/src/main/assets/mobile/index.html b/app/src/main/assets/mobile/index.html
index f7c165a..daca08d 100644
--- a/app/src/main/assets/mobile/index.html
+++ b/app/src/main/assets/mobile/index.html
@@ -36,8 +36,8 @@
         <article class="glass-card audio-panel">
           <div class="panel-title"><div><span class="tiny-icon">♪</span><b>声音控制</b></div><small>即时生效</small></div>
           <div class="seg"><button id="accompany" data-vocal="accompany"><span>伴</span>伴唱</button><button id="original" data-vocal="original"><span>原</span>原唱</button></div>
-          <label><span><i class="volume-icon">♪</i>音乐音量</span><b><em id="musicValue">85</em>%</b><input id="musicVolume" type="range" min="0" max="100" value="85"></label>
-          <label class="mic-hw"><span><i class="volume-icon mic">●</i>麦克风音量</span><small>由功放/混音器硬件调节</small><input id="micVolume" type="range" min="0" max="100" value="70" disabled></label>
+          <div class="audio-row"><span><i class="volume-icon">♪</i>音乐音量</span><b><em id="musicValue">85</em>%</b><input id="musicVolume" type="range" min="0" max="100" value="85"></div>
+          <div class="audio-row mic-hw"><span><i class="volume-icon mic">●</i>麦克风音量</span><small>由功放/混音器硬件调节</small><input id="micVolume" type="range" min="0" max="100" value="70" disabled></div>
         </article>
 
         <article class="glass-card eq-panel">
@@ -62,10 +62,10 @@
       <section id="search" class="page">
         <div class="page-heading"><div><p>SONG LIBRARY</p><h2>想唱什么？</h2></div><span>海量本地曲库</span></div>
         <div class="search-mode" role="group" aria-label="搜索方式">
-          <button type="button" data-search-mode="singer" class="active">歌手</button>
-          <button type="button" data-search-mode="song">歌曲</button>
+          <button type="button" data-search-mode="song" class="active">歌曲</button>
+          <button type="button" data-search-mode="singer">歌手</button>
         </div>
-        <form id="searchForm" class="search-box"><span class="search-icon"></span><input id="query" autocomplete="off" placeholder="输入歌手名或拼音"><button type="submit">搜索</button></form>
+        <form id="searchForm" class="search-box"><span class="search-icon"></span><input id="query" autocomplete="off" placeholder="输入歌曲名或拼音"><button type="submit">搜索</button></form>
         <div id="searchResultBlock" class="search-result-block hidden">
           <div class="block-title"><h3 id="resultTitle">歌手搜索结果</h3><span id="resultSummary"></span></div>
           <div id="results" class="list"></div><button id="more" class="more hidden">加载更多歌曲</button>
diff --git a/app/src/main/java/com/local/ktv/MainActivity.kt b/app/src/main/java/com/local/ktv/MainActivity.kt
index 27a52e5..25f4ca6 100644
--- a/app/src/main/java/com/local/ktv/MainActivity.kt
+++ b/app/src/main/java/com/local/ktv/MainActivity.kt
@@ -150,6 +150,18 @@ class MainActivity : AppCompatActivity() {
     private val remoteServer by lazy { LocalRemoteServer(this) }
     @Volatile private var remoteStateVersion = 1L
     private val remoteSongCache = Collections.synchronizedMap(LinkedHashMap<String, Song>())
+
+    /**
+     * 远程搜索结果的短期缓存（LRU，最多 24 条 = 最近 4 个查询 × 6 页）。
+     *
+     * 曲库 DB 有 67 万首/约 1GB，搜索是 I/O 密集操作（实测同一查询冷态数秒、热态数十至数百毫秒）。
+     * 同一「类型+关键词+页码」重复请求直接复用上次的 JSON，翻页（「更多」）与重复搜索不再查库。
+     * TTL 60s + 曲库刷新时清空，保证隐藏/删除歌曲后结果及时跟上。
+     */
+    private val remoteSearchCache = object : LinkedHashMap<String, Pair<String, Long>>(8, 0.75f, true) {
+        override fun removeEldestEntry(eldest: MutableMap.MutableEntry<String, Pair<String, Long>>?): Boolean =
+            size > 24
+    }
     private var mobileQrOverlay: View? = null
     private var fullScreenQrOverlay: View? = null
     private var updateCheckStarted = false
@@ -170,25 +182,6 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    /** 全屏右上角扫码点歌二维码显隐控制: 手机连接点歌(页面可见时每秒轮询 state)
-     *  期间自动隐藏, 断开(无请求超过约 4 秒)后恢复显示。 */
-    private val qrAutoHideMonitor = object : Runnable {
-        private var hiddenByClient = false
-        override fun run() {
-            val overlay = fullScreenQrOverlay
-            if (overlay != null && isFullScreen) {
-                val active = remoteServer.hasRecentActivity(4000)
-                if (active && !hiddenByClient) {
-                    hiddenByClient = true
-                    overlay.visibility = View.GONE
-                } else if (!active && hiddenByClient) {
-                    hiddenByClient = false
-                    overlay.visibility = View.VISIBLE
-                }
-            }
-            main.postDelayed(this, 1000)
-        }
-    }
     /** 周期向 hbeat.ktvsky.com 上报设备身份,维持歌曲源对"合法设备"的判定。 */
     private val ktvHeartbeatRunnable = object : Runnable {
         override fun run() {
@@ -505,7 +498,6 @@ class MainActivity : AppCompatActivity() {
         startRemoteServer()
         updateMobileQrOverlay()
         main.postDelayed(remoteNetworkMonitor, 5000)
-        main.postDelayed(qrAutoHideMonitor, 1000)
         // 设备心跳:开机立即上报一次(boot=1),之后每 3600s 保活,维持歌曲源合法设备判定。
         sendDeviceHeartbeat(boot = true)
         main.postDelayed(ktvHeartbeatRunnable, HEARTBEAT_INTERVAL_MS)
@@ -690,7 +682,6 @@ class MainActivity : AppCompatActivity() {
         main.removeCallbacks(homeBannerRunnable)
         main.removeCallbacks(autoFullscreenRunnable)
         main.removeCallbacks(remoteNetworkMonitor)
-        main.removeCallbacks(qrAutoHideMonitor)
         stopRecording(false)
         unregisterMicInputWatcher()
         micActivator.stop()
@@ -2419,6 +2410,8 @@ class MainActivity : AppCompatActivity() {
         fullScreenChromeVisible = visible
         fullScreenControls?.visibility = if (visible) View.VISIBLE else View.GONE
         fullScreenProgressRow?.visibility = if (visible) View.VISIBLE else View.GONE
+        // 右上角二维码跟随控制层一起出现/隐藏（不再按"手机是否在点歌"自动隐藏）。
+        fullScreenQrOverlay?.visibility = if (visible) View.VISIBLE else View.GONE
         main.removeCallbacks(hideFullScreenChromeRunnable)
         if (visible && isFullScreen) {
             val controls = fullScreenControls
@@ -3156,10 +3149,6 @@ class MainActivity : AppCompatActivity() {
             addressLine.gravity = Gravity.CENTER
             box.addView(addressLine, LinearLayout.LayoutParams(-1, dp(32)))
         }
-        // 提示:扫码连上后播放界面右上角二维码会自动隐藏。
-        val hint = label("扫码点歌后自动隐藏播放界面二维码", 14, Color.rgb(193, 193, 193))
-        hint.gravity = Gravity.CENTER
-        box.addView(hint, LinearLayout.LayoutParams(-1, dp(if (compact) 26 else 30)))
         val scroll = android.widget.ScrollView(this).apply { addView(box) }
         val dialog = AlertDialog.Builder(this)
             .setTitle("扫码点歌")
@@ -3254,6 +3243,8 @@ class MainActivity : AppCompatActivity() {
         }
         container.addView(box, params)
         box.bringToFront()
+        // 跟随控制层显隐：控制层收起时二维码也不显示(新建时按当前状态初始化)。
+        box.visibility = if (fullScreenChromeVisible) View.VISIBLE else View.GONE
         // 同手机点歌二维码: 展示型表面不做焦点填充。
         TvFocusStyler.suppressFill(box)
         fullScreenQrOverlay = box
@@ -3741,12 +3732,22 @@ class MainActivity : AppCompatActivity() {
         return remoteOk(equalizerJson().put("message", "均衡器已更新"))
     }
 
+    /** 远程搜索结果缓存有效期。 */
+    private val SEARCH_CACHE_TTL_MS = 60_000L
+
     private fun remoteSearchJson(query: Map<String, String>): JSONObject {
         val keyword = query["q"].orEmpty().trim()
         val type = query["type"].orEmpty().lowercase(Locale.ROOT).let { if (it == "song") "song" else "singer" }
         val page = (query["page"]?.toIntOrNull() ?: 1).coerceAtLeast(1)
         val pageSize = (query["pageSize"]?.toIntOrNull() ?: 20).coerceIn(1, 50)
         val offset = (page - 1) * pageSize
+        // 命中缓存: 不再查 1GB 曲库(翻页/重复搜索基本瞬时)。
+        val cacheKey = "$type|$keyword|$page|$pageSize"
+        remoteSearchCache[cacheKey]?.let { (json, at) ->
+            if (System.currentTimeMillis() - at < SEARCH_CACHE_TTL_MS) {
+                runCatching { JSONObject(json) }.getOrNull()?.let { return it }
+            }
+        }
         val songs = if (library.muse.isAvailable() && keyword.isNotBlank()) {
             if (type == "singer") library.muse.searchSongsBySingerKeyword(keyword, offset, pageSize + 1)
             else library.muse.searchSongs(keyword, offset, pageSize + 1)
@@ -3767,8 +3768,10 @@ class MainActivity : AppCompatActivity() {
             array.put(songJson(song))
         }
         while (remoteSongCache.size > 500) remoteSongCache.remove(remoteSongCache.keys.first())
-        return JSONObject().put("songs", array).put("page", page).put("pageSize", pageSize)
+        val payload = JSONObject().put("songs", array).put("page", page).put("pageSize", pageSize)
             .put("type", type).put("hasMore", hasMore)
+        remoteSearchCache[cacheKey] = payload.toString() to System.currentTimeMillis()
+        return payload
     }
 
     private fun remoteHotJson(query: Map<String, String>): JSONObject {
@@ -6190,6 +6193,8 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun refreshLibrary(after: Runnable?) {
+        // 曲库变化后远程搜索结果缓存立即失效，避免还搜到已隐藏/已删除的歌。
+        remoteSearchCache.clear()
         busy(true, "正在扫描曲库...")
         io.execute(Runnable {
             val locals = library.scanLocal().size
@@ -8956,7 +8961,6 @@ class MainActivity : AppCompatActivity() {
         var pendingOrderedSongOriginal = orderedSongOriginal
         var pendingOrderedVolumeMode = orderedVolumeMode
         var pendingOrderedVocalMode = orderedVocalMode
-        var pendingMusicVolume = musicVolume
         fun title(text: String) = TextView(this).apply {
             this.text = text; textSize = 16f; setTextColor(Color.WHITE); setPadding(0, dp(4), 0, 0)
         }
@@ -8979,23 +8983,12 @@ class MainActivity : AppCompatActivity() {
                     changed(index)
                 }
             }
-        val musicVolumeTitle = title("歌曲最大音量  ${pendingMusicVolume}%")
+        // 说明：音量调节与均衡器入口已从这里移除 —— 它们统一收敛到「调音」弹窗，
+        // 避免同一功能出现两套入口（音量滑杆 + 均衡器开关/预设/频段都在「调音」里）。
         val left = LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
             addView(title("切到点播歌曲时音量："))
             addView(choices(arrayOf("跟随上首音量", "跟随上首点播歌曲音量"), pendingOrderedVolumeMode) { pendingOrderedVolumeMode = it })
-            addView(musicVolumeTitle)
-            addView(SeekBar(this@MainActivity).apply {
-                max = 100; progress = pendingMusicVolume
-                setOnSeekBarChangeListener(object : OnSeekBarChangeListener {
-                    override fun onProgressChanged(bar: SeekBar?, value: Int, fromUser: Boolean) {
-                        pendingMusicVolume = value
-                        musicVolumeTitle.text = "歌曲最大音量  ${pendingMusicVolume}%"
-                    }
-                    override fun onStartTrackingTouch(bar: SeekBar?) = Unit
-                    override fun onStopTrackingTouch(bar: SeekBar?) = Unit
-                })
-            })
         }
         val right = LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
@@ -9009,26 +9002,9 @@ class MainActivity : AppCompatActivity() {
             addView(left, LinearLayout.LayoutParams(0, -2, 1f).apply { marginEnd = dp(28) })
             addView(right, LinearLayout.LayoutParams(0, -2, 1f))
         }
-        // 均衡器入口：与播放界面/主页「调音」里的入口等价，修改即时生效。
-        val eqEntry = TextView(this).apply {
-            text = "均衡器入口  ›"
-            textSize = 17f
-            setTextColor(Color.WHITE)
-            gravity = Gravity.CENTER
-            background = getDrawable(R.drawable.bg_btn_glass)
-            isClickable = true
-            isFocusable = true
-            setPadding(dp(12), dp(10), dp(12), dp(10))
-            setOnClickListener { showTuningDialog() }
-            TvFocusStyler.installAction(this)
-        }
         val body = LinearLayout(this).apply {
             orientation = LinearLayout.VERTICAL
             addView(content, LinearLayout.LayoutParams(-1, -2))
-            addView(eqEntry, LinearLayout.LayoutParams(-1, dp(48)).apply {
-                marginStart = dp(28)
-                marginEnd = dp(28)
-            })
         }
         val scroll = android.widget.ScrollView(this).apply { addView(body) }
         val dialog = AlertDialog.Builder(this).setTitle("声音设置")
@@ -9038,7 +9014,6 @@ class MainActivity : AppCompatActivity() {
                 orderedSongOriginal = pendingOrderedSongOriginal
                 orderedVolumeMode = pendingOrderedVolumeMode
                 orderedVocalMode = pendingOrderedVocalMode
-                musicVolume = pendingMusicVolume
                 applyPlaybackMode()
                 saveState()
             }.create()