diff --git a/plugins/winddrift.splayerlrc-classisland.js b/plugins/winddrift.splayerlrc-classisland.js
new file mode 100644
index 0000000..a3b2371
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+++ b/plugins/winddrift.splayerlrc-classisland.js
@@ -0,0 +1,162 @@
+/**
+ * @name ClassIsland 联动
+ * @id winddrift.splayerlrc-classisland
+ * @version 1.0.3
+ * @author imsyy & WindDrift
+ * @homepage https://github.com/WindDrift/SPlayerLRC-In-ClassIsland
+ * @type control
+ * @grant network
+ * @apiLevel 2
+ * @description 把当前歌词推送到 ClassIsland 主界面
+ * @updateUrl https://raw.githubusercontent.com/WindDrift/SPlayerLRC-In-ClassIsland/main/SPlayerLRC-In-ClassIsland.js
+ */
+splayer.register({
+  events: ["trackChange", "lyricChange", "lineChange"],
+  settings: [
+    {
+      key: "port",
+      type: "number",
+      label: "端口",
+      description: "ClassIsland 歌词组件监听的本地端口",
+      default: 50063,
+      min: 1024,
+      max: 65535,
+    },
+    {
+      key: "showTranslation",
+      type: "switch",
+      label: "显示翻译",
+      description: "当歌词行包含翻译时，将翻译显示在副行",
+      default: true,
+    },
+    {
+      key: "showNextLine",
+      type: "switch",
+      label: "无翻译时显示下一行",
+      description: "当没有翻译可显示时，将下一行歌词显示在副行",
+      default: true,
+    },
+    {
+      key: "skipBackgroundLyrics",
+      type: "switch",
+      label: "跳过背景歌词",
+      description: "开启后，背景歌词不会显示在 ClassIsland 上，但其所属主歌词仍会正常显示",
+      default: false,
+    },
+    {
+      key: "overlapDuetAsExtra",
+      type: "switch",
+      label: "重叠对唱显示在副行",
+      description: "开启后，与主歌词时间重叠的对唱歌词会显示在副行，主歌词保持显示在主行",
+      default: true,
+    },
+  ],
+});
+
+const post = (lyric, extra) => {
+  const port = splayer.getSetting("port") || 50063;
+  splayer
+    .request(`http://127.0.0.1:${port}/component/lyrics/lyrics/`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ lyric, extra }),
+    })
+    .catch(() => {});
+};
+
+/** 一行歌词 → 纯文本 */
+const lineText = (line) => (line && line.words ? line.words.map((w) => w.word).join("") : "");
+
+/** 向前查找最近的主歌词行索引（用于背景歌词） */
+const findPrevMainLineIndex = (lines, from) => {
+  for (let i = from; i >= 0; i--) {
+    if (!lines[i].isBG) return i;
+  }
+  return -1;
+};
+
+/** 查找与当前行时间重叠的最近主歌词行索引（用于对唱） */
+const findOverlappingMainLineIndex = (lines, from) => {
+  const cur = lines[from];
+  for (let i = from - 1; i >= 0; i--) {
+    const line = lines[i];
+    if (line.isBG || line.isDuet) continue;
+    if (line.endTime > cur.startTime) return i;
+  }
+  return -1;
+};
+
+/** 向后查找下一行应显示的歌词行索引（开启跳过时将跳过背景歌词行） */
+const findNextLineIndex = (lines, from, skipBG) => {
+  for (let i = from + 1; i < lines.length; i++) {
+    if (!skipBG || !lines[i].isBG) return i;
+  }
+  return -1;
+};
+
+let lines = [];
+
+splayer.player.on("trackChange", ({ track }) => {
+  if (track) post(track.title, track.artists);
+});
+
+splayer.player.on("lyricChange", ({ lines: ls }) => {
+  lines = ls || [];
+});
+
+splayer.player.on("lineChange", ({ index }) => {
+  const skipBG = splayer.getSetting("skipBackgroundLyrics");
+  const overlapDuet = splayer.getSetting("overlapDuetAsExtra");
+  const cur = lines[index];
+
+  let lyric = "";
+  let extra = "";
+  let mainLine = cur;
+
+  if (cur && cur.isBG) {
+    // 当前是背景歌词行，向前找到所属主歌词行
+    const mainIdx = findPrevMainLineIndex(lines, index);
+    if (mainIdx < 0) {
+      // 找不到所属主行时，跳过背景歌词模式下不发送
+      if (skipBG) return;
+      lyric = lineText(cur);
+    } else if (skipBG) {
+      // 跳过背景歌词模式下，保持主行显示，但不在副行显示背景歌词
+      mainLine = lines[mainIdx];
+      lyric = lineText(mainLine);
+    } else {
+      mainLine = lines[mainIdx];
+      lyric = lineText(mainLine);
+      extra = lineText(cur);
+    }
+  } else if (overlapDuet && cur && cur.isDuet) {
+    // 当前是对唱行，若与某主行时间重叠，则主行保持主显示，对唱行显示在副行
+    const mainIdx = findOverlappingMainLineIndex(lines, index);
+    if (mainIdx >= 0) {
+      mainLine = lines[mainIdx];
+      lyric = lineText(mainLine);
+      extra = lineText(cur);
+    } else {
+      lyric = lineText(cur);
+    }
+  } else {
+    lyric = lineText(cur);
+  }
+
+  // 默认情况下，主歌词行的下一行若是背景歌词行，则把背景歌词显示在副行
+  if (!skipBG && cur && !cur.isBG && lines[index + 1] && lines[index + 1].isBG) {
+    extra = lineText(lines[index + 1]);
+  }
+
+  // 仍未确定副行时，按原有逻辑回退：翻译 > 下一行
+  if (!extra && mainLine) {
+    if (splayer.getSetting("showTranslation") && mainLine.translatedLyric) {
+      extra = mainLine.translatedLyric;
+    } else if (splayer.getSetting("showNextLine")) {
+      const nextIdx = findNextLineIndex(lines, index, skipBG);
+      if (nextIdx >= 0) extra = lineText(lines[nextIdx]);
+    }
+  }
+
+  post(lyric, extra);
+});