diff --git a/frontend/login/index.html b/frontend/login/index.html
index 32eaf8e..8a88068 100644
--- a/frontend/login/index.html
+++ b/frontend/login/index.html
@@ -19,9 +19,9 @@
       document.documentElement.style.colorScheme = theme;
     })();
   </script>
-  <link rel="stylesheet" href="/shared/tokens.css?v=20260829-hel240">
+  <link rel="stylesheet" href="/shared/tokens.css?v=20260829-hel251">
   <link rel="stylesheet" href="/shared/base.css?v=20260806-1">
-  <link rel="stylesheet" href="/shared/auth.css?v=20260829-hel243">
+  <link rel="stylesheet" href="/shared/auth.css?v=20260829-hel251">
   <link rel="stylesheet" href="/shared/components/controls.css?v=20260820-2">
 </head>
 <body class="login-portal">
@@ -33,6 +33,73 @@
         <p class="login-brand-subtitle">A股个人复盘工作台</p>
       </div>
     </div>
+    <div class="login-mascots" id="loginMascots" aria-hidden="true" data-mood="idle">
+      <div class="login-mascots-stage">
+        <div class="login-mascot is-red">
+          <div class="login-mascot-breathe">
+            <div class="login-mascot-lean">
+              <svg class="login-mascot-figure" viewBox="0 0 96 210" focusable="false">
+                <ellipse class="login-mascot-shadow" cx="48" cy="200" rx="26" ry="5.5"></ellipse>
+                <line class="login-mascot-wick" x1="48" y1="10" x2="48" y2="50"></line>
+                <rect class="login-mascot-body" x="16" y="50" width="64" height="126" rx="14"></rect>
+                <line class="login-mascot-wick" x1="48" y1="176" x2="48" y2="190"></line>
+                <g class="login-mascot-face">
+                  <circle class="login-mascot-eye" cx="36" cy="94" r="10"></circle>
+                  <circle class="login-mascot-eye" cx="60" cy="94" r="10"></circle>
+                  <circle class="login-mascot-pupil" cx="36" cy="94" r="4.2"></circle>
+                  <circle class="login-mascot-pupil" cx="60" cy="94" r="4.2"></circle>
+                  <rect class="login-mascot-lid" x="24" y="82" width="48" height="24" rx="10"></rect>
+                  <path class="login-mascot-happy" d="M28 96 Q36 88 44 96"></path>
+                  <path class="login-mascot-happy" d="M52 96 Q60 88 68 96"></path>
+                  <circle class="login-mascot-sad" cx="36" cy="96" r="2.2"></circle>
+                  <circle class="login-mascot-sad" cx="60" cy="96" r="2.2"></circle>
+                </g>
+                <ellipse class="login-mascot-arm is-left" cx="16" cy="128" rx="8" ry="5.5"></ellipse>
+                <ellipse class="login-mascot-arm is-right" cx="80" cy="128" rx="8" ry="5.5"></ellipse>
+                <ellipse class="login-mascot-hand is-left" cx="16" cy="128" rx="9" ry="7"></ellipse>
+                <ellipse class="login-mascot-hand is-right" cx="80" cy="128" rx="9" ry="7"></ellipse>
+              </svg>
+            </div>
+          </div>
+        </div>
+        <div class="login-mascot is-green">
+          <div class="login-mascot-breathe">
+            <div class="login-mascot-lean">
+              <div class="login-mascot-figure">
+                <svg class="login-mascot-front" viewBox="0 0 84 175" focusable="false">
+                  <ellipse class="login-mascot-shadow" cx="42" cy="166" rx="22" ry="4.5"></ellipse>
+                  <line class="login-mascot-wick" x1="42" y1="8" x2="42" y2="42"></line>
+                  <rect class="login-mascot-body" x="15" y="42" width="54" height="104" rx="12"></rect>
+                  <line class="login-mascot-wick" x1="42" y1="146" x2="42" y2="158"></line>
+                  <g class="login-mascot-face">
+                    <circle class="login-mascot-eye" cx="32" cy="76" r="8.5"></circle>
+                    <circle class="login-mascot-eye" cx="52" cy="76" r="8.5"></circle>
+                    <circle class="login-mascot-pupil" cx="32" cy="76" r="3.6"></circle>
+                    <circle class="login-mascot-pupil" cx="52" cy="76" r="3.6"></circle>
+                    <rect class="login-mascot-lid" x="22" y="66" width="40" height="20" rx="8"></rect>
+                    <path class="login-mascot-happy" d="M25 78 Q32 71 39 78"></path>
+                    <path class="login-mascot-happy" d="M45 78 Q52 71 59 78"></path>
+                    <circle class="login-mascot-sad" cx="32" cy="78" r="1.9"></circle>
+                    <circle class="login-mascot-sad" cx="52" cy="78" r="1.9"></circle>
+                  </g>
+                  <ellipse class="login-mascot-arm is-left" cx="15" cy="108" rx="7" ry="4.5"></ellipse>
+                  <ellipse class="login-mascot-arm is-right" cx="69" cy="108" rx="7" ry="4.5"></ellipse>
+                </svg>
+                <svg class="login-mascot-back" viewBox="0 0 84 175" focusable="false">
+                  <ellipse class="login-mascot-shadow" cx="42" cy="166" rx="22" ry="4.5"></ellipse>
+                  <line class="login-mascot-wick" x1="42" y1="8" x2="42" y2="42"></line>
+                  <rect class="login-mascot-body" x="15" y="42" width="54" height="104" rx="12"></rect>
+                  <line class="login-mascot-wick" x1="42" y1="146" x2="42" y2="158"></line>
+                  <rect class="login-mascot-slit" x="40.5" y="58" width="3" height="72" rx="1.5"></rect>
+                  <ellipse class="login-mascot-arm is-left" cx="15" cy="108" rx="7" ry="4.5"></ellipse>
+                  <ellipse class="login-mascot-arm is-right" cx="69" cy="108" rx="7" ry="4.5"></ellipse>
+                </svg>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
     <div class="login-brand-copy">
       <p class="login-brand-kicker">收盘之后 · 复盘开始</p>
       <h1 class="login-brand-title">看懂情绪周期，把复盘变成下一次的先手。</h1>
@@ -90,6 +157,6 @@
     <section class="login-card" id="loginCard" aria-live="polite"></section>
   </main>
   <script src="/shared/api.js?v=20260803-2"></script>
-  <script src="/login/page.js?v=20260829-hel243"></script>
+  <script src="/login/page.js?v=20260829-hel251"></script>
 </body>
 </html>
diff --git a/frontend/login/page.js b/frontend/login/page.js
index 23af83b..73f22ec 100644
--- a/frontend/login/page.js
+++ b/frontend/login/page.js
@@ -15,6 +15,7 @@
     error: "",
     username: "",
     password: "",
+    passwordVisible: false,
   };
 
   function escapeHtml(value) {
@@ -102,6 +103,8 @@
     const lead = options.lead;
     const hint = options.hint;
     const invalid = state.error ? " is-invalid" : "";
+    const passwordType = state.passwordVisible ? "text" : "password";
+    const passwordToggle = state.passwordVisible ? "隐藏" : "显示";
     return [
       options.back
         ? '<button class="login-back" type="button" data-login-action="picker">返回账号列表</button>'
@@ -114,7 +117,7 @@
       "</div>",
       '<form class="login-form" id="loginForm">',
       `<label class="form-field"><span>账号名</span><input id="loginUsername" type="text" minlength="3" maxlength="30" autocomplete="username" placeholder="请输入账号名" value="${escapeHtml(state.username)}" required></label>`,
-      `<label class="form-field"><span>密码</span><input id="loginPassword" class="${invalid.trim()}" type="password" minlength="8" maxlength="128" autocomplete="${registering ? "new-password" : "current-password"}" placeholder="请输入密码" value="${escapeHtml(state.password)}" required></label>`,
+      `<label class="form-field"><span>密码</span><span class="login-password-wrap"><input id="loginPassword" class="${invalid.trim()}" type="${passwordType}" minlength="8" maxlength="128" autocomplete="${registering ? "new-password" : "current-password"}" placeholder="请输入密码" value="${escapeHtml(state.password)}" required><button class="login-password-toggle" type="button" data-login-action="toggle-password" aria-pressed="${state.passwordVisible ? "true" : "false"}" aria-label="${state.passwordVisible ? "隐藏密码" : "显示密码"}">${passwordToggle}</button></span></label>`,
       `<label class="form-field" id="loginConfirmField"${registering ? "" : " hidden"}><span>确认密码</span><input id="loginPasswordConfirm" type="password" minlength="8" maxlength="128" autocomplete="new-password"${registering ? " required" : ""}></label>`,
       state.error ? `<p class="login-error">${escapeHtml(state.error)}</p>` : '<p class="login-error" hidden></p>',
       `<button class="button primary login-submit" type="submit"${state.loading ? " disabled" : ""}>`,
@@ -214,6 +217,7 @@
       card.innerHTML = pickerMarkup();
     }
     bindCard();
+    if (mascots) mascots.sync();
   }
 
   function bindCard() {
@@ -227,6 +231,10 @@
     card.querySelectorAll("[data-login-action]").forEach((button) => {
       button.addEventListener("click", () => {
         const action = button.dataset.loginAction;
+        if (action === "toggle-password") {
+          togglePasswordVisible();
+          return;
+        }
         if (action === "resume") {
           resumeCurrentAccount();
           return;
@@ -293,11 +301,13 @@
     render();
     try {
       await api.request(`/api/auth/${state.mode}`, "POST", { username, password });
+      await celebrateLogin();
       enterApp();
     } catch (error) {
       state.loading = false;
       setError(error.message || "账号操作失败");
       render();
+      mascots.fail();
     }
   }
 
@@ -350,6 +360,241 @@
     }
   }
 
+  function togglePasswordVisible() {
+    state.passwordVisible = !state.passwordVisible;
+    const input = document.querySelector("#loginPassword");
+    const button = document.querySelector(".login-password-toggle");
+    if (input) {
+      input.type = state.passwordVisible ? "text" : "password";
+      input.focus();
+    }
+    if (button) {
+      button.textContent = state.passwordVisible ? "隐藏" : "显示";
+      button.setAttribute("aria-pressed", state.passwordVisible ? "true" : "false");
+      button.setAttribute("aria-label", state.passwordVisible ? "隐藏密码" : "显示密码");
+    }
+    mascots.sync();
+  }
+
+  function reducedMotion() {
+    return Boolean(global.matchMedia && global.matchMedia("(prefers-reduced-motion: reduce)").matches);
+  }
+
+  function finePointer() {
+    return Boolean(global.matchMedia && global.matchMedia("(pointer: fine)").matches);
+  }
+
+  function wait(ms) {
+    return new Promise((resolve) => global.setTimeout(resolve, ms));
+  }
+
+  async function celebrateLogin() {
+    mascots.succeed();
+    if (!reducedMotion()) await wait(720);
+  }
+
+  const mascots = (() => {
+    const root = document.querySelector("#loginMascots");
+    const red = root && root.querySelector(".login-mascot.is-red");
+    const green = root && root.querySelector(".login-mascot.is-green");
+    const motion = {
+      pupilX: 0,
+      pupilY: 0,
+      targetX: 0,
+      targetY: 0,
+      leanRed: 0,
+      leanGreen: 0,
+      targetLeanRed: 0,
+      targetLeanGreen: 0,
+    };
+    let mood = "idle";
+    let locked = "";
+    let blinkTimer = 0;
+    let failTimer = 0;
+    let raf = 0;
+
+    function setVars() {
+      if (!red || !green) return;
+      const pupilX = `${motion.pupilX.toFixed(2)}px`;
+      const pupilY = `${motion.pupilY.toFixed(2)}px`;
+      red.style.setProperty("--pupil-x", pupilX);
+      red.style.setProperty("--pupil-y", pupilY);
+      green.style.setProperty("--pupil-x", pupilX);
+      green.style.setProperty("--pupil-y", pupilY);
+      red.style.setProperty("--lean", `${motion.leanRed.toFixed(2)}deg`);
+      green.style.setProperty("--lean", `${motion.leanGreen.toFixed(2)}deg`);
+    }
+
+    function poseFor(next) {
+      if (next === "account" || next === "busy") {
+        motion.targetX = 3.2;
+        motion.targetY = 0.8;
+        motion.targetLeanRed = 7;
+        motion.targetLeanGreen = 5.6;
+        return;
+      }
+      if (next === "password") {
+        motion.targetX = 0;
+        motion.targetY = 0;
+        motion.targetLeanRed = 0;
+        motion.targetLeanGreen = 0;
+        return;
+      }
+      if (next === "fail") {
+        motion.targetX = 0;
+        motion.targetY = 2.8;
+        motion.targetLeanRed = 8;
+        motion.targetLeanGreen = 8;
+        return;
+      }
+      if (next === "success") {
+        motion.targetX = 0;
+        motion.targetY = 0;
+        motion.targetLeanRed = 0;
+        motion.targetLeanGreen = 0;
+        return;
+      }
+      if (!finePointer()) {
+        motion.targetX = 2.4;
+        motion.targetY = 0.4;
+        motion.targetLeanRed = 4;
+        motion.targetLeanGreen = 3.2;
+        return;
+      }
+      motion.targetLeanRed = 0;
+      motion.targetLeanGreen = 0;
+    }
+
+    function applyMood(next) {
+      if (!root) return;
+      const changed = next !== mood;
+      if (changed) {
+        mood = next;
+        root.dataset.mood = next;
+        poseFor(next);
+      } else if (next !== "idle") {
+        poseFor(next);
+      }
+      if (reducedMotion()) {
+        motion.pupilX = motion.targetX;
+        motion.pupilY = motion.targetY;
+        motion.leanRed = motion.targetLeanRed;
+        motion.leanGreen = motion.targetLeanGreen;
+        setVars();
+      }
+    }
+
+    function focusedControl() {
+      const active = document.activeElement;
+      if (!active || !card.contains(active)) return "";
+      if (active.classList.contains("login-password-toggle")) return "loginPassword";
+      return active.id || "";
+    }
+
+    function desiredMood() {
+      if (locked === "success") return "success";
+      if (state.loading) return "busy";
+      const focused = focusedControl();
+      if (focused === "loginPassword" || focused === "loginPasswordConfirm") return "password";
+      if (focused === "loginUsername") return "account";
+      if (locked === "fail") return "fail";
+      return "idle";
+    }
+
+    function sync() {
+      applyMood(desiredMood());
+    }
+
+    function succeed() {
+      locked = "success";
+      applyMood("success");
+    }
+
+    function fail() {
+      locked = "fail";
+      applyMood("fail");
+      global.clearTimeout(failTimer);
+      failTimer = global.setTimeout(() => {
+        if (locked === "fail") locked = "";
+        sync();
+      }, 900);
+    }
+
+    function blink() {
+      if (!root || reducedMotion()) return;
+      if (mood !== "idle" && mood !== "account" && mood !== "busy") return;
+      root.classList.remove("is-blinking");
+      void root.offsetWidth;
+      root.classList.add("is-blinking");
+      global.setTimeout(() => root.classList.remove("is-blinking"), 160);
+    }
+
+    function scheduleBlink() {
+      global.clearTimeout(blinkTimer);
+      if (reducedMotion()) return;
+      const waitMs = 4000 + Math.random() * 2000;
+      blinkTimer = global.setTimeout(() => {
+        blink();
+        scheduleBlink();
+      }, waitMs);
+    }
+
+    function onMouseMove(event) {
+      if (reducedMotion() || !finePointer()) return;
+      if (desiredMood() !== "idle") return;
+      const rect = root.getBoundingClientRect();
+      const cx = rect.left + rect.width * 0.42;
+      const cy = rect.top + rect.height * 0.42;
+      const dx = event.clientX - cx;
+      const dy = event.clientY - cy;
+      const dist = Math.hypot(dx, dy) || 1;
+      const cap = 3.5;
+      motion.targetX = (dx / dist) * Math.min(cap, Math.abs(dx) / 90);
+      motion.targetY = (dy / dist) * Math.min(cap, Math.abs(dy) / 90);
+      const tilt = Math.max(-5, Math.min(5, (dx / Math.max(global.innerWidth, 1)) * 10));
+      motion.targetLeanRed = tilt;
+      motion.targetLeanGreen = tilt * 0.8;
+    }
+
+    function tick() {
+      if (!root) return;
+      if (!reducedMotion()) {
+        motion.pupilX += (motion.targetX - motion.pupilX) * 0.18;
+        motion.pupilY += (motion.targetY - motion.pupilY) * 0.18;
+        motion.leanRed += (motion.targetLeanRed - motion.leanRed) * 0.18;
+        motion.leanGreen += (motion.targetLeanGreen - motion.leanGreen) * 0.18;
+        setVars();
+      } else {
+        motion.pupilX = motion.targetX;
+        motion.pupilY = motion.targetY;
+        motion.leanRed = motion.targetLeanRed;
+        motion.leanGreen = motion.targetLeanGreen;
+        setVars();
+      }
+      raf = global.requestAnimationFrame(tick);
+    }
+
+    function onFocusChange() {
+      global.requestAnimationFrame(sync);
+    }
+
+    if (root) {
+      document.addEventListener("focusin", onFocusChange);
+      document.addEventListener("focusout", onFocusChange);
+      global.addEventListener("mousemove", onMouseMove, { passive: true });
+      if (!reducedMotion()) {
+        raf = global.requestAnimationFrame(tick);
+        scheduleBlink();
+      } else {
+        poseFor("idle");
+        setVars();
+      }
+      sync();
+    }
+
+    return { sync, succeed, fail };
+  })();
+
   themeButton.addEventListener("click", () => {
     applyTheme(document.documentElement.dataset.theme === "dark" ? "light" : "dark", true);
   });
diff --git a/frontend/shared/auth.css b/frontend/shared/auth.css
index 929e879..d172abc 100644
--- a/frontend/shared/auth.css
+++ b/frontend/shared/auth.css
@@ -1827,16 +1827,351 @@ body.login-portal {
   opacity: 0.72;
 }
 
-.login-brand-copy {
+.login-mascots {
   display: flex;
 
   flex: 1 1 auto;
 
+  align-items: center;
+
+  min-height: 0;
+
+  pointer-events: none;
+}
+
+.login-mascots-stage {
+  display: flex;
+
+  align-items: flex-end;
+
+  padding-left: calc(var(--login-mascot-height) * 82 / 210);
+
+  gap: calc(var(--login-mascot-height) * 10 / 210);
+}
+
+.login-mascot {
+  position: relative;
+
+  flex: 0 0 auto;
+
+  overflow: visible;
+
+  --pupil-x: 0px;
+
+  --pupil-y: 0px;
+
+  --lean: 0deg;
+}
+
+.login-mascot.is-red {
+  width: calc(var(--login-mascot-height) * 96 / 210);
+
+  height: var(--login-mascot-height);
+}
+
+.login-mascot.is-green {
+  width: calc(var(--login-mascot-height) * 84 / 210);
+
+  height: calc(var(--login-mascot-height) * 175 / 210);
+
+  perspective: 420px;
+}
+
+.login-mascot-breathe {
+  width: 100%;
+
+  height: 100%;
+
+  transform-origin: 50% 100%;
+}
+
+.login-mascots[data-mood="idle"] .login-mascot-breathe {
+  animation: login-mascot-breathe 3.6s ease-in-out infinite;
+}
+
+.login-mascot-lean {
+  width: 100%;
+
+  height: 100%;
+
+  transform: rotate(var(--lean));
+
+  transform-origin: 50% 88%;
+}
+
+.login-mascot.is-red .login-mascot-figure {
+  display: block;
+
+  width: 100%;
+
+  height: 100%;
+}
+
+.login-mascot.is-green .login-mascot-figure {
+  position: relative;
+
+  width: 100%;
+
+  height: 100%;
+
+  transform-style: preserve-3d;
+
+  transition: transform 280ms ease-in-out;
+}
+
+.login-mascot-front {
+  display: block;
+
+  width: 100%;
+
+  height: 100%;
+
+  backface-visibility: hidden;
+}
+
+.login-mascot-back {
+  position: absolute;
+
+  inset: 0;
+
+  display: block;
+
+  width: 100%;
+
+  height: 100%;
+
+  backface-visibility: hidden;
+
+  transform: rotateY(180deg);
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-green .login-mascot-figure {
+  transform: rotateY(180deg);
+}
+
+.login-mascot-body {
+  fill: var(--login-mascot-red);
+}
+
+.login-mascot.is-green .login-mascot-body {
+  fill: var(--login-mascot-green);
+}
+
+.login-mascot-wick {
+  stroke: var(--login-mascot-red);
+
+  stroke-width: 4;
+
+  stroke-linecap: round;
+}
+
+.login-mascot.is-green .login-mascot-wick {
+  stroke: var(--login-mascot-green);
+
+  stroke-width: 3.5;
+}
+
+.login-mascot-eye {
+  fill: var(--login-mascot-eye);
+}
+
+.login-mascot-pupil {
+  fill: var(--login-mascot-pupil);
+
+  transform: translate(var(--pupil-x), var(--pupil-y));
+
+  transform-box: fill-box;
+
+  transform-origin: center;
+}
+
+.login-mascot-lid {
+  fill: var(--login-mascot-red);
+
+  transform: scaleY(0);
+
+  transform-box: fill-box;
+
+  transform-origin: center;
+}
+
+.login-mascot.is-green .login-mascot-lid {
+  fill: var(--login-mascot-green);
+}
+
+.login-mascots.is-blinking .login-mascot-lid {
+  animation: login-mascot-blink 140ms ease-out;
+}
+
+.login-mascot-happy {
+  fill: none;
+
+  stroke: var(--login-mascot-pupil);
+
+  stroke-width: 2.4;
+
+  stroke-linecap: round;
+
+  opacity: 0;
+}
+
+.login-mascot-sad {
+  fill: var(--login-mascot-pupil);
+
+  opacity: 0;
+}
+
+.login-mascot-arm {
+  fill: var(--login-mascot-red);
+
+  transform-box: fill-box;
+
+  transform-origin: center;
+
+  transition: transform 250ms cubic-bezier(0.2, 0.9, 0.25, 1.2);
+}
+
+.login-mascot.is-green .login-mascot-arm {
+  fill: var(--login-mascot-green);
+}
+
+.login-mascot-hand {
+  fill: var(--login-mascot-red-shade);
+
+  opacity: 0;
+
+  transform-box: fill-box;
+
+  transform-origin: center;
+
+  transition: transform 250ms cubic-bezier(0.2, 0.9, 0.25, 1.2), opacity 180ms ease-out;
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-hand {
+  opacity: 1;
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-hand.is-left {
+  transform: translate(20px, -34px) scale(1.2);
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-hand.is-right {
+  transform: translate(-20px, -34px) scale(1.2);
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-arm.is-left {
+  transform: translate(10px, -18px) rotate(-18deg);
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-arm.is-right {
+  transform: translate(-10px, -18px) rotate(18deg);
+}
+
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-pupil,
+.login-mascots[data-mood="password"] .login-mascot.is-red .login-mascot-eye {
+  opacity: 0;
+}
+
+.login-mascot-slit {
+  fill: var(--login-mascot-green-shade);
+}
+
+.login-mascot-shadow {
+  fill: rgba(6, 10, 24, 0.28);
+}
+
+.login-mascots[data-mood="success"] .login-mascot-pupil,
+.login-mascots[data-mood="success"] .login-mascot-lid,
+.login-mascots[data-mood="fail"] .login-mascot-pupil {
+  opacity: 0;
+}
+
+.login-mascots[data-mood="success"] .login-mascot-happy,
+.login-mascots[data-mood="fail"] .login-mascot-sad {
+  opacity: 1;
+}
+
+.login-mascots[data-mood="success"] .login-mascot.is-red .login-mascot-arm.is-left {
+  transform: translate(-2px, -36px) rotate(-48deg);
+}
+
+.login-mascots[data-mood="success"] .login-mascot.is-red .login-mascot-arm.is-right {
+  transform: translate(2px, -36px) rotate(48deg);
+}
+
+.login-mascots[data-mood="success"] .login-mascot.is-red {
+  animation: login-mascot-hop-red 450ms ease-in-out;
+}
+
+.login-mascots[data-mood="success"] .login-mascot.is-green {
+  animation: login-mascot-hop-green 450ms ease-in-out 80ms;
+}
+
+.login-mascots[data-mood="fail"] .login-mascot-arm {
+  transform: translateY(6px);
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .login-mascots[data-mood="idle"] .login-mascot-breathe,
+  .login-mascots.is-blinking .login-mascot-lid,
+  .login-mascots[data-mood="success"] .login-mascot.is-red,
+  .login-mascots[data-mood="success"] .login-mascot.is-green {
+    animation: none;
+  }
+
+  .login-mascot.is-green .login-mascot-figure,
+  .login-mascot-hand,
+  .login-mascot-arm {
+    transition: none;
+  }
+}
+
+.login-password-wrap {
+  position: relative;
+
+  display: block;
+}
+
+.login-portal .login-password-wrap input {
+  padding-right: 48px;
+}
+
+.login-password-toggle {
+  position: absolute;
+
+  top: 50%;
+
+  right: 8px;
+
+  z-index: 1;
+
+  min-height: 24px;
+
+  padding: 0;
+
+  border: 0;
+
+  background: transparent;
+
+  color: var(--text-secondary);
+
+  font-size: var(--font-size-caption);
+
+  transform: translateY(-50%);
+
+  cursor: pointer;
+}
+
+.login-brand-copy {
+  display: flex;
+
+  flex: 0 0 auto;
+
   flex-direction: column;
 
   justify-content: flex-end;
 
-  padding: 24px 0 20px;
+  padding: 0 0 20px;
 }
 
 .login-brand-kicker {
@@ -2119,6 +2454,50 @@ body.login-portal {
   }
 }
 
+@keyframes login-mascot-breathe {
+  0%,
+  100% {
+    transform: scaleY(1);
+  }
+
+  50% {
+    transform: scaleY(1.015);
+  }
+}
+
+@keyframes login-mascot-blink {
+  0%,
+  100% {
+    transform: scaleY(0);
+  }
+
+  50% {
+    transform: scaleY(1);
+  }
+}
+
+@keyframes login-mascot-hop-red {
+  0%,
+  100% {
+    transform: translateY(0);
+  }
+
+  42% {
+    transform: translateY(-13px);
+  }
+}
+
+@keyframes login-mascot-hop-green {
+  0%,
+  100% {
+    transform: translateY(0);
+  }
+
+  42% {
+    transform: translateY(-11px);
+  }
+}
+
 .login-error {
   margin: 0;
 
@@ -2466,7 +2845,8 @@ body.login-portal {
 
   .login-brand-copy,
   .login-brand-market,
-  .login-brand-disclaimer {
+  .login-brand-disclaimer,
+  .login-mascots {
     display: none;
   }
 
diff --git a/frontend/shared/tokens.css b/frontend/shared/tokens.css
index ba04e4e..749c5b0 100644
--- a/frontend/shared/tokens.css
+++ b/frontend/shared/tokens.css
@@ -165,6 +165,13 @@
   --login-candle-up: #e07078;
   --login-candle-down: #3db88a;
   --login-trend-line: rgba(244, 247, 255, 0.88);
+  --login-mascot-red: #e8605a;
+  --login-mascot-red-shade: #c74a45;
+  --login-mascot-green: #46be93;
+  --login-mascot-green-shade: #37997a;
+  --login-mascot-eye: #f7f9fc;
+  --login-mascot-pupil: #1a2440;
+  --login-mascot-height: clamp(150px, 15vw, 260px);
 
   --font-size-aux: 11.5px;
   --font-size-caption: 12.5px;
diff --git a/tests/e2e/login-portal.spec.js b/tests/e2e/login-portal.spec.js
index 9e11e76..1d2f6e5 100644
--- a/tests/e2e/login-portal.spec.js
+++ b/tests/e2e/login-portal.spec.js
@@ -229,12 +229,26 @@ async function assertConfirmedSkeleton(page, { width, height }) {
   expect(title.y).toBeLessThan(height * 0.72);
   expect(stats.y).toBeGreaterThan(height * 0.55);
   expect(chart.height).toBeGreaterThan(80);
+  await expect(page.locator("#loginMascots")).toBeVisible();
   expect(card.width).toBeGreaterThan(380);
   expect(card.width).toBeLessThan(450);
   if (width === 1440) {
     expect(brand.width).toBeGreaterThan(470);
     expect(brand.width).toBeLessThan(520);
     expect(brand.height).toBe(height);
+    const mascots = await page.locator("#loginMascots").boundingBox();
+    const kicker = await page.locator(".login-brand-kicker").boundingBox();
+    expect(mascots).toBeTruthy();
+    expect(kicker).toBeTruthy();
+    expect(mascots.y).toBeGreaterThan(header.y + header.height - 4);
+    expect(mascots.y + mascots.height).toBeLessThan(kicker.y + 8);
+    const gapTop = header.y + header.height;
+    const gapBottom = kicker.y;
+    const mid = (gapTop + gapBottom) / 2;
+    const mascotMid = mascots.y + mascots.height / 2;
+    expect(Math.abs(mascotMid - mid)).toBeLessThan(48);
+    expect(title.y).toBeGreaterThan(470);
+    expect(title.y).toBeLessThan(580);
   } else if (width === 1920) {
     expect(brand.width).toBeGreaterThan(540);
     expect(brand.width).toBeLessThan(580);
@@ -444,3 +458,99 @@ test("workspace switch-account from a second page also returns to that page", as
   await page.locator('[data-resume-id="1"]').click();
   await expect(page).toHaveURL(/view=ladderView/);
 });
+
+test("desktop mascots react to account focus, password, toggle, loading, success and failure", async ({ page }) => {
+  await openPortal(page, { theme: "light", width: 1440, height: 900, accounts: [] });
+  const mascots = page.locator("#loginMascots");
+  await expect(mascots).toHaveAttribute("data-mood", "idle");
+  await page.locator("#loginUsername").focus();
+  await expect(mascots).toHaveAttribute("data-mood", "account");
+  await page.locator("#loginPassword").focus();
+  await expect(mascots).toHaveAttribute("data-mood", "password");
+  await expect.poll(async () => (
+    page.locator(".login-mascot.is-red .login-mascot-hand.is-left").evaluate((node) => getComputedStyle(node).opacity)
+  )).toBe("1");
+  await page.locator(".login-password-toggle").click();
+  await expect(page.locator("#loginPassword")).toHaveAttribute("type", "text");
+  await expect(mascots).toHaveAttribute("data-mood", "password");
+  await page.locator(".login-password-toggle").click();
+  await expect(page.locator("#loginPassword")).toHaveAttribute("type", "password");
+  await expect(mascots).toHaveAttribute("data-mood", "password");
+  await page.screenshot({ path: path.join(SHOT_DIR, "mascots-password-light-1440.png"), fullPage: true });
+});
+
+test("login loading and failure drive short mascot feedback", async ({ page }) => {
+  await openPortal(page, {
+    theme: "dark",
+    width: 1440,
+    height: 900,
+    accounts: [],
+    loginFails: true,
+    loginDelay: 800,
+  });
+  await page.locator("#loginUsername").fill("baiqizhi");
+  await page.locator("#loginPassword").fill("wrong-password");
+  const submit = page.locator(".login-submit").click();
+  await expect(page.locator("#loginMascots")).toHaveAttribute("data-mood", "busy");
+  await expect(page.locator(".login-error")).toContainText("账号名或密码不正确");
+  await expect(page.locator("#loginMascots")).toHaveAttribute("data-mood", "fail");
+  await page.screenshot({ path: path.join(SHOT_DIR, "mascots-fail-dark-1440.png"), fullPage: true });
+  await submit;
+});
+
+test("login success plays a hop before leaving the portal", async ({ page }) => {
+  await openPortal(page, { theme: "light", width: 1440, height: 900, accounts: [] });
+  await page.evaluate(() => {
+    window.location.replace = () => {};
+  });
+  await page.locator("#loginUsername").fill("baiqizhi");
+  await page.locator("#loginPassword").fill("password12");
+  const submit = page.locator(".login-submit").click();
+  await expect(page.locator("#loginMascots")).toHaveAttribute("data-mood", /busy|success/);
+  await expect(page.locator("#loginMascots")).toHaveAttribute("data-mood", "success", { timeout: 4000 });
+  await page.screenshot({ path: path.join(SHOT_DIR, "mascots-success-light-1440.png"), fullPage: true });
+  await submit;
+});
+
+test("reduced motion keeps static mascots without mouse tracking", async ({ page }) => {
+  await page.emulateMedia({ reducedMotion: "reduce" });
+  await openPortal(page, { theme: "dark", width: 1440, height: 900, accounts: [] });
+  const mascots = page.locator("#loginMascots");
+  await expect(mascots).toBeVisible();
+  await expect(mascots).toHaveAttribute("data-mood", "idle");
+  const before = await mascots.evaluate((node) => getComputedStyle(node.querySelector(".login-mascot.is-red")).getPropertyValue("--pupil-x"));
+  await page.mouse.move(1200, 120);
+  await page.waitForTimeout(120);
+  const after = await mascots.evaluate((node) => getComputedStyle(node.querySelector(".login-mascot.is-red")).getPropertyValue("--pupil-x"));
+  expect(after).toBe(before);
+  await page.locator("#loginPassword").focus();
+  await expect(mascots).toHaveAttribute("data-mood", "password");
+  await page.screenshot({ path: path.join(SHOT_DIR, "mascots-reduced-dark-1440.png"), fullPage: true });
+});
+
+test("mouse follow updates mascot pupils on a fine pointer", async ({ page }) => {
+  await openPortal(page, { theme: "light", width: 1440, height: 900, accounts: [] });
+  const mascots = page.locator("#loginMascots");
+  await page.mouse.move(80, 160);
+  await page.waitForTimeout(180);
+  const left = await mascots.evaluate((node) => getComputedStyle(node.querySelector(".login-mascot.is-red")).getPropertyValue("--pupil-x"));
+  await page.mouse.move(1280, 200);
+  await page.waitForTimeout(180);
+  const right = await mascots.evaluate((node) => getComputedStyle(node.querySelector(".login-mascot.is-red")).getPropertyValue("--pupil-x"));
+  expect(Number.parseFloat(right)).toBeGreaterThan(Number.parseFloat(left));
+});
+
+test("narrow screens hide mascots without moving the login card", async ({ page }) => {
+  await openPortal(page, { theme: "light", width: 800, height: 900, accounts: [] });
+  await expect(page.locator("#loginMascots")).toBeHidden();
+  await expect(page.locator(".login-card-title")).toHaveText("欢迎回来");
+  await expect(page.locator(".login-brand-title")).toBeHidden();
+});
+
+test("theme toggle keeps mascots in the brand gap", async ({ page }) => {
+  await openPortal(page, { theme: "light", width: 1440, height: 900, accounts: [] });
+  await page.locator("#loginThemeToggle").click();
+  await expect(page.locator("html")).toHaveAttribute("data-theme", "dark");
+  await assertConfirmedSkeleton(page, { width: 1440, height: 900 });
+  await page.screenshot({ path: path.join(SHOT_DIR, "mascots-idle-dark-1440.png"), fullPage: true });
+});
diff --git a/tests/test_login_portal.py b/tests/test_login_portal.py
index 6dec4b0..e744e7d 100644
--- a/tests/test_login_portal.py
+++ b/tests/test_login_portal.py
@@ -44,6 +44,29 @@ class LoginPortalContractTests(unittest.TestCase):
         self.assertIn("padding-bottom: 0;", AUTH)
         self.assertNotIn("padding: 0 0 var(--statusbar-height);", AUTH)
 
+    def test_confirmed_mascots_fill_the_brand_gap(self) -> None:
+        for needle in (
+            'id="loginMascots"',
+            'aria-hidden="true"',
+            'class="login-mascot is-red"',
+            'class="login-mascot is-green"',
+            'class="login-mascot-back"',
+            'class="login-mascot-slit"',
+        ):
+            self.assertIn(needle, LOGIN)
+        for needle in (
+            "--login-mascot-red: #e8605a;",
+            "--login-mascot-green: #46be93;",
+            "--login-mascot-height: clamp(150px, 15vw, 260px);",
+        ):
+            self.assertIn(needle, TOKENS)
+        self.assertIn("flex: 1 1 auto;", AUTH)
+        self.assertIn(".login-mascots {", AUTH)
+        self.assertIn("prefers-reduced-motion: reduce", AUTH)
+        self.assertIn('next === "password"', LOGIN_JS)
+        self.assertIn("toggle-password", LOGIN_JS)
+        self.assertIn("celebrateLogin", LOGIN_JS)
+
     def test_portal_keeps_account_switch_and_theme_hooks(self) -> None:
         self.assertIn("data-switch-id", LOGIN_JS)
         self.assertIn("data-resume-id", LOGIN_JS)
