diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 4cabe33..5e0a1d2 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -220,11 +220,11 @@
     "description": "Username selector label"
   },
   "usernameSelectorPlaceholder": {
-    "message": "Empty=auto find, e.g. #username or input[name=account]",
+    "message": "Empty=auto find, or paste element HTML / CSS selector",
     "description": "Username selector placeholder"
   },
   "usernameSelectorHelp": {
-    "message": "Leave empty. Wrong value will cause username not filled.",
+    "message": "Paste the input's DOM node, or a CSS selector; empty = auto find.",
     "description": "Username selector help"
   },
   "passwordSelectorLabel": {
@@ -232,11 +232,11 @@
     "description": "Password selector label"
   },
   "passwordSelectorPlaceholder": {
-    "message": "Empty=auto find, e.g. #password or input[type=password]",
+    "message": "Empty=auto find, or paste element HTML / CSS selector",
     "description": "Password selector placeholder"
   },
   "passwordSelectorHelp": {
-    "message": "Leave empty. Wrong value will cause password not filled.",
+    "message": "Paste the input's DOM node, or a CSS selector; empty = auto find.",
     "description": "Password selector help"
   },
   "submitSelectorLabel": {
@@ -244,11 +244,11 @@
     "description": "Submit selector label"
   },
   "submitSelectorPlaceholder": {
-    "message": "Empty=auto find, e.g. #loginBtn or button[type=submit]",
+    "message": "Empty=auto find, or paste element HTML / CSS selector",
     "description": "Submit selector placeholder"
   },
   "submitSelectorHelp": {
-    "message": "Leave empty. Wrong value will cause auto-submit not to click.",
+    "message": "Paste the button's DOM node, or a CSS selector; empty = auto find.",
     "description": "Submit selector help"
   },
   "addConfigBtn": {
diff --git a/_locales/zh_CN/messages.json b/_locales/zh_CN/messages.json
index b343c67..4d2745c 100644
--- a/_locales/zh_CN/messages.json
+++ b/_locales/zh_CN/messages.json
@@ -220,11 +220,11 @@
     "description": "用户名选择器 label"
   },
   "usernameSelectorPlaceholder": {
-    "message": "留空=自动查找，如 #username 或 input[name=account]",
+    "message": "留空=自动查找，可粘贴元素 HTML 或填 CSS 选择器",
     "description": "用户名选择器 placeholder"
   },
   "usernameSelectorHelp": {
-    "message": "留空即可。填错会导致用户名填不进框。",
+    "message": "直接粘贴该输入框的 DOM 节点，或填 CSS 选择器；留空则自动查找。",
     "description": "用户名选择器下方说明"
   },
   "passwordSelectorLabel": {
@@ -232,11 +232,11 @@
     "description": "密码选择器 label"
   },
   "passwordSelectorPlaceholder": {
-    "message": "留空=自动查找，如 #password 或 input[type=password]",
+    "message": "留空=自动查找，可粘贴元素 HTML 或填 CSS 选择器",
     "description": "密码选择器 placeholder"
   },
   "passwordSelectorHelp": {
-    "message": "留空即可。填错会导致密码填不进框。",
+    "message": "直接粘贴该输入框的 DOM 节点，或填 CSS 选择器；留空则自动查找。",
     "description": "密码选择器下方说明"
   },
   "submitSelectorLabel": {
@@ -244,11 +244,11 @@
     "description": "登录按钮选择器 label"
   },
   "submitSelectorPlaceholder": {
-    "message": "留空=自动查找，如 #loginBtn 或 button[type=submit]",
+    "message": "留空=自动查找，可粘贴元素 HTML 或填 CSS 选择器",
     "description": "登录按钮选择器 placeholder"
   },
   "submitSelectorHelp": {
-    "message": "留空即可。填错会导致不会自动点击登录。",
+    "message": "直接粘贴该按钮的 DOM 节点，或填 CSS 选择器；留空则自动查找。",
     "description": "登录按钮选择器下方说明"
   },
   "addConfigBtn": {
diff --git a/content.js b/content.js
index 239948a..1fc9571 100644
--- a/content.js
+++ b/content.js
@@ -71,13 +71,49 @@ function setNativeValue(el, value) {
   el.dispatchEvent(new Event("change", { bubbles: true }));
 }
 
-function findUsernameField(config) {
-  let searchScope = config.usernameSelector ? document.querySelector(config.usernameSelector) : null;
-  if (!searchScope) {
-    const passwordField = findPasswordField(config);
-    if (!passwordField) return null;
-    searchScope = passwordField.closest("form") || document;
+function resolveElement(value, multiple) {
+  if (!value) return null;
+  const trimmed = value.trim();
+  if (!trimmed.startsWith("<")) {
+    return multiple ? Array.from(document.querySelectorAll(trimmed)) : document.querySelector(trimmed);
   }
+  const doc = new DOMParser().parseFromString(trimmed, "text/html");
+  const el = doc.body.firstElementChild;
+  if (!el) return null;
+  const tag = el.tagName.toLowerCase();
+  const id = el.id;
+  const cls = Array.from(el.classList);
+  const type = el.getAttribute("type");
+  const nameAttr = el.getAttribute("name");
+  const candidates = [];
+  if (id) candidates.push(`${tag}#${CSS.escape(id)}`);
+  if (cls.length) candidates.push(`${tag}.${cls.map(CSS.escape).join(".")}`);
+  if (type) candidates.push(`${tag}[type="${type}"]`);
+  if (nameAttr) candidates.push(`${tag}[name="${CSS.escape(nameAttr)}"]`);
+  for (const c of cls) candidates.push(`${tag}.${CSS.escape(c)}`);
+  candidates.push(tag);
+  for (const sel of candidates) {
+    if (multiple) {
+      const els = Array.from(document.querySelectorAll(sel));
+      if (els.length) return els;
+    } else {
+      const found = document.querySelector(sel);
+      if (found) return found;
+    }
+  }
+  return null;
+}
+
+function findUsernameField(config) {
+  if (config.usernameSelector) {
+    const el = resolveElement(config.usernameSelector);
+    if (el) return el;
+  }
+
+  const passwordField = findPasswordField(config);
+  if (!passwordField) return null;
+
+  const searchScope = passwordField.closest("form") || document;
 
   const selectors = [
     "input[type='text']",
@@ -125,8 +161,12 @@ function findUsernameField(config) {
 }
 
 function findPasswordField(config) {
-  const scope = config.passwordSelector ? (document.querySelector(config.passwordSelector) || document) : document;
-  const passwordInputs = scope.querySelectorAll("input[type='password']");
+  if (config.passwordSelector) {
+    const el = resolveElement(config.passwordSelector);
+    if (el) return el;
+  }
+
+  const passwordInputs = document.querySelectorAll("input[type='password']");
   for (const input of passwordInputs) {
     if (input.offsetParent !== null || input.offsetWidth > 0) {
       return input;
@@ -137,12 +177,26 @@ function findPasswordField(config) {
 }
 
 function findSubmitButton(config, passwordField) {
-  let searchScope = config.submitSelector ? document.querySelector(config.submitSelector) : null;
-  if (!searchScope) {
-    const form = passwordField ? passwordField.closest("form") : null;
-    searchScope = form || document;
+  if (config.submitSelector) {
+    const els = resolveElement(config.submitSelector, true);
+    if (els && els.length === 1) return els[0];
+    if (els && els.length > 1) {
+      for (const el of els) {
+        if (el.offsetParent === null && el.offsetWidth === 0) continue;
+        const compact = (el.textContent || el.value || "").toLowerCase().replace(/\s/g, "");
+        if (compact.includes("登录") || compact.includes("login") || compact.includes("signin")) {
+          return el;
+        }
+      }
+      for (const el of els) {
+        if (el.offsetParent !== null || el.offsetWidth > 0) return el;
+      }
+    }
   }
 
+  const form = passwordField ? passwordField.closest("form") : null;
+  const searchScope = form || document;
+
   const submitSelectors = [
     "button[type='submit']",
     "input[type='submit']",
diff --git a/popup.js b/popup.js
index 60b6153..c53ecdd 100644
--- a/popup.js
+++ b/popup.js
@@ -1052,6 +1052,7 @@ document.addEventListener("DOMContentLoaded", () => {
       }
       const value = u.pathname && u.pathname !== "/" ? host + u.pathname : host;
       domainInput.value = value;
+      if (tab.title) aliasInput.value = tab.title;
       saveDraft();
       showToast(t("toastDomainFilled", value));
     } catch {
diff --git a/utils.js b/utils.js
index f22f38b..2cbed2b 100644
--- a/utils.js
+++ b/utils.js
@@ -19,18 +19,20 @@
     if (!url || !pattern) return false;
     try {
       const u = new URL(url);
-      const hostname = u.hostname;
+
       const rawPattern = String(pattern).trim();
 
       if (rawPattern.includes("/")) {
         const slashIdx = rawPattern.indexOf("/");
         const hostPart = rawPattern.slice(0, slashIdx);
         const pathPart = rawPattern.slice(slashIdx + 1) || "";
-        if (!matchHost(hostname, hostPart)) return false;
+        const hostForMatch = hostPart.includes(":") ? u.host : u.hostname;
+        if (!matchHost(hostForMatch, hostPart)) return false;
         return matchPath(u.pathname, pathPart);
       }
 
-      return matchHost(hostname, rawPattern);
+      const hostForMatch = rawPattern.includes(":") ? u.host : u.hostname;
+      return matchHost(hostForMatch, rawPattern);
     } catch {
       return false;
     }