diff --git a/apps/waterfall-wiki/src/pages/account.tsx b/apps/waterfall-wiki/src/pages/account.tsx
index 4d5d73f..d427b8c 100644
--- a/apps/waterfall-wiki/src/pages/account.tsx
+++ b/apps/waterfall-wiki/src/pages/account.tsx
@@ -12,9 +12,8 @@ import {
   MailCheck,
 } from "lucide-react";
 import GuidanceShell, { useGuidanceAccount } from "@/components/GuidanceShell";
-import { Notice } from "@/components/GuidanceUI";
 import s from "@/styles/guidance.module.css";
-type Mode = "login" | "register" | "resend";
+type Mode = "login" | "register" | "resend" | "forgot" | "reset" | "verify";
 function localNext(value: string | string[] | undefined) {
   if (
     typeof value !== "string" ||
@@ -33,304 +32,104 @@ function localNext(value: string | string[] | undefined) {
   }
 }
 export default function AccountPage() {
-  return (
-    <GuidanceShell title="登录与注册" standalone>
-      <AccountContent />
-    </GuidanceShell>
-  );
+  return <GuidanceShell title="登录与注册" standalone><AccountContent /></GuidanceShell>;
 }
 function AccountContent() {
-  const account = useGuidanceAccount(),
-    router = useRouter();
-  const [mode, setMode] = useState<Mode>("login"),
-    [email, setEmail] = useState(""),
-    [password, setPassword] = useState(""),
-    [showPassword, setShowPassword] = useState(false);
-  const [busy, setBusy] = useState(false),
-    [token, setToken] = useState(""),
-    [feedback, setFeedback] = useState<{
-      tone: "success" | "error";
-      text: string;
-    } | null>(null);
+  const account = useGuidanceAccount(), router = useRouter();
+  const [mode, setMode] = useState<Mode>("login");
+  const [email, setEmail] = useState(""), [password, setPassword] = useState(""), [confirm, setConfirm] = useState("");
+  const [showPassword, setShowPassword] = useState(false), [busy, setBusy] = useState(false);
+  const [token, setToken] = useState("");
+  const [feedback, setFeedback] = useState<{tone: "success" | "error"; text: string} | null>(null);
   useEffect(() => {
     const url = new URL(window.location.href);
-    const value = url.searchParams.get("verify");
-    if (value) {
-      setToken(value);
-      url.searchParams.delete("verify");
+    const reset = url.searchParams.get("reset"), verify = url.searchParams.get("verify");
+    if (reset || verify) {
+      setToken(reset || verify || ""); setMode(reset ? "reset" : "verify");
+      url.searchParams.delete("reset"); url.searchParams.delete("verify");
       window.history.replaceState({}, "", url.pathname + url.search + url.hash);
     }
   }, []);
-  async function action(name: Mode | "verify" | "logout", body: object = {}) {
+  function switchMode(value: Mode) { setMode(value); setFeedback(null); setPassword(""); setConfirm(""); setShowPassword(false); }
+  async function action(name: Mode | "logout", body: object = {}) {
     if (busy) return;
-    setBusy(true);
-    setFeedback(null);
+    setBusy(true); setFeedback(null);
     try {
-      const response = await fetch("/api/account/" + name, {
-        method: "POST",
-        headers: { "Content-Type": "application/json" },
-        body: JSON.stringify(body),
-      });
+      const response = await fetch("/api/account/" + name, {method: "POST", headers: {"Content-Type": "application/json"}, body: JSON.stringify(body)});
       const data = await response.json();
       if (!response.ok) throw Error(data.error || "暂时无法完成操作，请重试");
-      if (name === "verify") {
-        setToken("");
-        setMode("login");
-        setFeedback({ tone: "success", text: "邮箱已验证，现在可以登录。" });
-      } else if (name === "login") {
-        setPassword("");
-        setFeedback({ tone: "success", text: "登录成功，欢迎回到啡跃。" });
-      } else if (name === "logout") {
-        setPassword("");
-        setFeedback({ tone: "success", text: "已退出登录。" });
-      } else
-        setFeedback({
-          tone: "success",
-          text:
-            data.message ||
-            "如果信息符合条件，验证邮件已发送。请检查收件箱和垃圾邮件。",
-        });
+      if (name === "verify" || name === "reset") { setToken(""); switchMode("login"); }
+      if (name === "login" || name === "logout" || name === "reset") { setPassword(""); setConfirm(""); }
+      setFeedback({tone: "success", text: name === "verify" ? "邮箱已验证，现在可以登录。" : name === "reset" ? "密码已更新，请使用新密码登录。" : name === "login" ? "登录成功，欢迎回到啡跃。" : name === "logout" ? "已退出登录。" : data.message || "若账户符合条件，邮件将发送到你的邮箱。"});
       await account.refresh();
       if (name === "login") await router.push(localNext(router.query.next));
-    } catch (e) {
-      setFeedback({
-        tone: "error",
-        text: e instanceof Error ? e.message : "网络异常，请稍后重试",
-      });
-    } finally {
-      setBusy(false);
-    }
+    } catch (error) { setFeedback({tone: "error", text: error instanceof Error ? error.message : "网络异常，请稍后重试"}); }
+    finally { setBusy(false); }
   }
   function submit(event: FormEvent<HTMLFormElement>) {
     event.preventDefault();
-    void action(mode, { email, password });
+    if (mode === "reset" && password !== confirm) { setFeedback({tone: "error", text: "两次输入的密码不一致。"}); return; }
+    void action(mode, mode === "reset" ? {token, password} : mode === "verify" ? {token} : {email, password});
   }
-  function switchMode(value: Mode) {
-    setMode(value);
-    setFeedback(null);
-  }
-  return (
-    <div className={a.layout}>
-      <section className={a.intro} data-theme="home-dark" aria-label="啡跃创作空间">
-        <Link className={a.brand} href="/" aria-label="啡跃首页"><Brand /></Link>
-        <div className={a.story}>
-          <p className={a.eyebrow}>A SPACE FOR YOUR NEXT IDEA</p>
-          <h1>给想法留白，<br />让灵感有形。</h1>
-          <p className={a.description}>收集一闪而过的灵感，把有用的知识连接起来。下一件作品，从这里开始。</p>
-          <div className={a.art} aria-hidden="true">
-            <div className={a.orbit} />
-            <div className={a.idea}><span>01 / THE IDEA</span><strong>留住清晨<br />的一束光。</strong><i>灵感片段 · 随手记下</i></div>
-            <div className={a.work}><span>02 / IN THE MAKING</span><div className={a.artwork} /><strong>光的形状</strong><i>让一个念头，慢慢成形。</i></div>
-            <span className={a.artCaption}>COLLECT. CONNECT. CREATE.</span>
-          </div>
+  const user = mode === "reset" || mode === "verify" || mode === "forgot" ? null : account.user;
+  const title = user ? "你的账户" : ({login: "欢迎回来", register: "创建你的账户", resend: "重发验证邮件", forgot: "找回你的账户", reset: "设置新密码", verify: "确认验证邮箱"})[mode];
+  const description = user ? "你的知识与创作，随时继续。" : ({login: "使用邮箱与密码登录，继续你的创作。", register: "用邮箱建立你的知识与创作空间。", resend: "仅适用于尚未验证的账户，输入邮箱和原密码。", forgot: "输入注册邮箱，我们会发送重设密码链接。", reset: "由你设置新密码，原有内容会完整保留。", verify: "确认后，即可使用邮箱和密码登录。"})[mode];
+  const toast = feedback || (account.error ? {tone: "error" as const, text: account.error} : null);
+  return <div className={a.layout}>
+    <section className={a.intro} data-theme="home-dark" aria-label="啡跃创作空间">
+      <Link className={a.brand} href="/" aria-label="啡跃首页"><Brand /></Link>
+      <div className={a.story}>
+        <p className={a.eyebrow}>A SPACE FOR YOUR NEXT IDEA</p>
+        <h1>给想法留白，<br />让灵感有形。</h1>
+        <p className={a.description}>收集一闪而过的灵感，把有用的知识连接起来。下一件作品，从这里开始。</p>
+        <div className={a.art} aria-hidden="true">
+          <div className={a.orbit} />
+          <div className={a.idea}><span>01 / THE IDEA</span><strong>留住清晨<br />的一束光。</strong><i>灵感片段 · 随手记下</i></div>
+          <div className={a.work}><span>02 / IN THE MAKING</span><div className={a.artwork} /><strong>光的形状</strong><i>让一个念头，慢慢成形。</i></div>
+          <span className={a.artCaption}>COLLECT. CONNECT. CREATE.</span>
         </div>
-        <p className={a.signature}>啡跃 Endoleap <span>为下一次创作，留一个起点。</span></p>
-      </section>
-      <section className={`${s.authCard} ${a.form}`} aria-label="邮箱账户">
-        <h2>
-          {account.user
-            ? "你的账户"
-            : mode === "register"
-              ? "创建你的账户"
-              : mode === "resend"
-                ? "重发验证邮件"
-                : "欢迎回来"}
-        </h2>
-        <p className={s.authDescription}>
-          {account.user
-            ? "已准备好发布和管理你的独立文档。"
-            : mode === "register"
-              ? "验证邮箱后，就可以发布第一篇文档。"
-              : mode === "resend"
-                ? "仅适用于尚未验证的账户。已验证的邮箱可直接登录。"
-                : "使用邮箱与密码登录，继续你的知识工作。"}
-        </p>
-        {token && (
-          <section className={s.verificationCard}>
-            <h3>
-              <MailCheck size={17} />
-              确认验证邮箱
-            </h3>
-            <p>验证链接有效期为 30 分钟。确认后，再使用邮箱与密码登录。</p>
-            <button
-              type="button"
-              className={s.primaryButton}
-              disabled={busy}
-              onClick={() => void action("verify", { token })}
-            >
-              {busy ? "正在验证…" : "确认验证邮箱"}
-            </button>
-          </section>
-        )}
-        {feedback && <Notice tone={feedback.tone}>{feedback.text}</Notice>}
-        {account.error && (
-          <Notice tone="error">
-            {account.error}{" "}
-            <button
-              type="button"
-              className={s.textLink}
-              onClick={() => void account.refresh()}
-            >
-              重新连接
-            </button>
-          </Notice>
-        )}
-        {account.loading ? (
-          <div className={s.accountLoading} aria-busy="true">
-            正在检查账户状态…
+      </div>
+      <p className={a.signature}>啡跃 Endoleap <span>为下一次创作，留一个起点。</span></p>
+    </section>
+    <section className={a.form} aria-label="邮箱账户">
+      <div className={a.frame}>
+        <h2 key={title}>{title}</h2><p className={a.formDescription}>{description}</p>
+        {account.loading ? <div className={a.loading} aria-busy="true">正在检查账户状态…</div> : user ? <>
+          <div className={a.accountDetails}><CheckCircle2 size={22} /><strong>{user.email}</strong><span>邮箱已验证</span></div>
+          <Link className={s.primaryButton} href={localNext(router.query.next)}>继续使用啡跃 <ArrowRight size={15} /></Link>
+          <button className={a.secondary} type="button" disabled={busy} onClick={() => void action("logout")}><LogOut size={14} />退出登录</button>
+        </> : <>
+          <div className={a.tabSlot}>
+            {(mode === "login" || mode === "register") && <nav className={a.tabs} aria-label="账户操作" data-active={mode}>
+              <button type="button" aria-pressed={mode === "login"} disabled={busy} onClick={() => switchMode("login")}>登录</button>
+              <button type="button" aria-pressed={mode === "register"} disabled={busy} onClick={() => switchMode("register")}>创建账户</button>
+            </nav>}
           </div>
-        ) : account.user ? (
-          <>
-            <div className={s.loggedUser}>
-              <span className={s.avatar}>
-                {account.user.email.slice(0, 1).toUpperCase()}
-              </span>
-              <div>
-                <strong>{account.user.email}</strong>
-                <span className={s.verifiedBadge}>
-                  <CheckCircle2 size={13} />
-                  邮箱已验证
-                </span>
-              </div>
-            </div>
-            <div className={s.accountInfo}>
-              <p>
-                <strong>你的内容，由你管理。</strong>
-                <br />
-                你可以发布文档、创建新版本，以及撤下自己的内容。公开文档的固定历史版本会继续保留。
-              </p>
-            </div>
-            <Link
-              className={s.primaryButton}
-              href={localNext(router.query.next)}
-            >
-              继续使用啡跃
-              <ArrowRight size={15} />
-            </Link>
-            <div className={s.authSecondary}>
-              <button
-                type="button"
-                disabled={busy}
-                onClick={() => void action("logout")}
-              >
-                <LogOut size={12} /> 退出登录
-              </button>
-            </div>
-          </>
-        ) : (
-          <>
-            {mode !== "resend" && (
-              <nav className={s.authTabs} aria-label="账户操作">
-                <button
-                  type="button"
-                  aria-pressed={mode === "login"}
-                  disabled={busy}
-                  onClick={() => switchMode("login")}
-                >
-                  登录
-                </button>
-                <button
-                  type="button"
-                  aria-pressed={mode === "register"}
-                  disabled={busy}
-                  onClick={() => switchMode("register")}
-                >
-                  创建账户
-                </button>
-              </nav>
-            )}
-            <form onSubmit={submit}>
-              <fieldset className={s.formFieldset} disabled={busy}>
-                <div className={s.formField}>
+          <form onSubmit={submit}>
+            <fieldset className={a.fieldset} disabled={busy}>
+              <div className={a.fields} key={mode}>
+                {mode !== "reset" && mode !== "verify" && <div className={a.field}>
                   <label htmlFor="account-email">邮箱地址</label>
-                  <input
-                    id="account-email"
-                    className={s.input}
-                    type="email"
-                    name="email"
-                    autoComplete="email"
-                    placeholder="you@example.com"
-                    required
-                    maxLength={254}
-                    value={email}
-                    onChange={(e) => setEmail(e.target.value)}
-                  />
-                </div>
-                <div className={s.formField}>
-                  <label htmlFor="account-password">密码</label>
+                  <input id="account-email" className={s.input} type="email" name="email" autoComplete="email" placeholder="you@example.com" required maxLength={254} value={email} onChange={event => setEmail(event.target.value)} />
+                </div>}
+                {mode !== "forgot" && mode !== "verify" && <div className={a.field}>
+                  <div className={a.labelRow}><label htmlFor="account-password">{mode === "reset" ? "新密码" : "密码"}</label>{mode === "login" && <button type="button" onClick={() => switchMode("forgot")}>忘记密码？</button>}</div>
                   <div className={s.passwordField}>
-                    <input
-                      id="account-password"
-                      className={s.input}
-                      type={showPassword ? "text" : "password"}
-                      name="password"
-                      autoComplete={
-                        mode === "register"
-                          ? "new-password"
-                          : "current-password"
-                      }
-                      placeholder={
-                        mode === "register"
-                          ? "设置至少 12 个字符的密码"
-                          : "输入你的密码"
-                      }
-                      minLength={12}
-                      maxLength={256}
-                      required
-                      value={password}
-                      onChange={(e) => setPassword(e.target.value)}
-                    />
-                    <button
-                      type="button"
-                      aria-label={showPassword ? "隐藏密码" : "显示密码"}
-                      onClick={() => setShowPassword((value) => !value)}
-                    >
-                      {showPassword ? <EyeOff size={16} /> : <Eye size={16} />}
-                    </button>
+                    <input id="account-password" className={s.input} type={showPassword ? "text" : "password"} name="password" autoComplete={mode === "register" || mode === "reset" ? "new-password" : "current-password"} placeholder={mode === "register" || mode === "reset" ? "设置至少 12 个字符的密码" : "输入你的密码"} minLength={12} maxLength={256} required value={password} onChange={event => setPassword(event.target.value)} />
+                    <button type="button" aria-label={showPassword ? "隐藏密码" : "显示密码"} onClick={() => setShowPassword(value => !value)}>{showPassword ? <EyeOff size={16} /> : <Eye size={16} />}</button>
                   </div>
-                  {mode === "register" && (
-                    <small className={s.fieldHint}>
-                      建议使用包含字母、数字的长密码。
-                    </small>
-                  )}
-                </div>
-                <button className={s.primaryButton} type="submit">
-                  {busy
-                    ? "正在处理…"
-                    : mode === "login"
-                      ? "登录"
-                      : mode === "register"
-                        ? "创建账户"
-                        : "发送验证邮件"}
-                  {!busy && <ArrowRight size={15} />}
-                </button>
-              </fieldset>
-            </form>
-            <div className={s.authSecondary}>
-              {mode === "resend" ? (
-                <button
-                  type="button"
-                  disabled={busy}
-                  onClick={() => switchMode("login")}
-                >
-                  返回登录
-                </button>
-              ) : (
-                <button
-                  type="button"
-                  disabled={busy}
-                  onClick={() => switchMode("resend")}
-                >
-                  没有收到验证邮件？重新发送
-                </button>
-              )}
-            </div>
-            <p className={s.authFootnote}>
-              首次注册需要验证邮箱；已验证的账户可直接登录。公开文档始终可以直接阅读。
-            </p>
-          </>
-        )}
-      </section>
-    </div>
-  );
+                </div>}
+                {mode === "reset" && <div className={a.field}><label htmlFor="account-confirm">确认新密码</label><input id="account-confirm" className={s.input} type={showPassword ? "text" : "password"} autoComplete="new-password" required minLength={12} maxLength={256} value={confirm} onChange={event => setConfirm(event.target.value)} /></div>}
+                {mode === "verify" && <div className={a.verifyInfo}><MailCheck size={28} /><p>验证链接有效期为 30 分钟。请确认这是你注册的邮箱。</p></div>}
+              </div>
+              <button className={`${s.primaryButton} ${a.submit}`} type="submit">{busy ? "正在处理…" : ({login: "登录", register: "创建账户", resend: "发送验证邮件", forgot: "发送重设链接", reset: "保存新密码", verify: "确认验证邮箱"})[mode]}{!busy && <ArrowRight size={15} />}</button>
+            </fieldset>
+          </form>
+          <div className={a.secondarySlot}>{mode === "login" || mode === "register" ? <button className={a.secondary} type="button" disabled={busy} onClick={() => switchMode("resend")}>没有收到验证邮件？重新发送</button> : <button className={a.secondary} type="button" disabled={busy} onClick={() => switchMode("login")}>返回登录</button>}</div>
+          <p className={a.footnote}>{mode === "forgot" || mode === "reset" ? "链接仅供本人使用。重设成功后，所有旧会话将退出。" : "首次注册需要验证邮箱；已验证的账户可直接登录。"}</p>
+        </>}
+      </div>
+    </section>
+    {toast && <div className={a.toast} data-tone={toast.tone} role={toast.tone === "error" ? "alert" : "status"}><span aria-hidden="true">{toast.tone === "error" ? "!" : "✓"}</span><p>{toast.text}</p><button type="button" aria-label={!feedback && account.error ? "重新连接" : "关闭提示"} onClick={() => {setFeedback(null); if (account.error) void account.refresh();}}>×</button></div>}
+  </div>;
 }
diff --git a/apps/waterfall-wiki/src/styles/account.module.css b/apps/waterfall-wiki/src/styles/account.module.css
index 4dc6d79..e1f7581 100644
--- a/apps/waterfall-wiki/src/styles/account.module.css
+++ b/apps/waterfall-wiki/src/styles/account.module.css
@@ -1,18 +1,19 @@
-.page { min-height: 100svh; background: var(--surface); color: var(--foreground); }
+.page { height: 100dvh; overflow: hidden; background: var(--surface); color: var(--foreground); }
+.page > main { height: 100%; min-height: 0; }
 .header { position: absolute; z-index: 2; top: 28px; right: 36px; }
 .header > div { display: flex; align-items: center; gap: 20px; font-size: 13px; color: var(--muted-foreground); }
 .header a:hover { color: var(--foreground-strong); }
-.layout { display: grid; grid-template-columns: 46% minmax(0, 1fr); min-height: 100svh; }
+.layout { display: grid; grid-template-columns: 46% minmax(0, 1fr); height: 100%; min-height: 0; }
 .intro { position: relative; isolation: isolate; display: flex; flex-direction: column; min-width: 0; padding: 38px clamp(32px, 5vw, 80px) 30px; overflow: hidden; background: var(--background); color: var(--foreground); }
 .intro::before { content: ''; position: absolute; z-index: -1; inset: 0; background: radial-gradient(ellipse at 0% 35%, color-mix(in srgb, var(--el-deep-mocha) 85%, transparent), transparent 60%), radial-gradient(ellipse at 100% 92%, color-mix(in srgb, var(--primary) 45%, transparent), transparent 65%); }
 .brand { align-self: flex-start; }
-.story { margin: auto 0; padding-top: 64px; }
+.story { margin: auto 0; padding-top: clamp(16px, 4dvh, 40px); }
 .eyebrow { margin: 0 0 20px; font-size: 10px; letter-spacing: .18em; color: var(--muted-foreground); line-height: 1.7; }
 .story h1 { margin: 0 0 22px; font-size: clamp(32px, 3.3vw, 50px); font-weight: 600; line-height: 1.3; letter-spacing: -.035em; color: var(--foreground-strong); }
 .description { margin: 0; max-width: 340px; font-size: 15px; line-height: 1.9; color: var(--foreground); }
 .signature { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 32px 0 0; font-size: 11px; line-height: 1.7; color: var(--muted-foreground); }
 .signature span { opacity: .8; }
-.art { position: relative; height: 300px; margin: 28px -12px 0; pointer-events: none; }
+.art { position: relative; height: clamp(180px, 28dvh, 280px); margin: 28px -12px 0; pointer-events: none; }
 .orbit { position: absolute; width: 245px; height: 245px; left: 15%; top: 5%; border: 1px solid color-mix(in srgb, var(--foreground) 18%, transparent); border-radius: 50%; }
 .orbit::after { content: ''; position: absolute; inset: 25px -35px; border: inherit; border-radius: 50%; transform: rotate(-38deg); }
 .idea, .work { position: absolute; display: flex; flex-direction: column; border: 1px solid color-mix(in srgb, var(--foreground) 24%, transparent); border-radius: 14px; box-shadow: 0 20px 50px var(--shadow); }
@@ -24,29 +25,71 @@
 .artwork { height: 110px; margin: 16px 0 14px; overflow: hidden; border-radius: 100px 100px 8px 8px; background: radial-gradient(ellipse at 75% 20%, var(--el-cream), transparent 60%), linear-gradient(135deg, var(--el-deep-mocha), var(--el-espresso)); }
 .work strong { margin-bottom: 6px; font-size: 19px; font-weight: 500; }
 .artCaption { position: absolute; bottom: 0; left: 0; right: 0; text-align: center; font-size: 8px; letter-spacing: .2em; color: var(--muted-foreground); }
-.page .form { align-self: center; width: min(400px, calc(100% - 96px)); min-width: 0; margin: 116px auto 80px; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
-.page .form h2 { font-size: 28px; font-weight: 600; text-align: center; letter-spacing: -.04em; }
-.page .form > p:first-of-type { font-size: 14px; text-align: center; margin: 10px 0 32px; }
-.page .form label { font-size: 13px; font-weight: 500; }
-.page .form input { min-height: 46px; font-size: 14px; background: var(--surface); border: 1px solid var(--input); border-radius: 8px; box-shadow: 0 1px 2px var(--shadow); }
-.page .form nav { background: var(--surface-muted); padding: 4px; margin-bottom: 28px; border: 1px solid var(--border); border-radius: 9px; }
-.page .form nav button { min-height: 36px; font-size: 13px; }
-.page .form button[type='submit'] { min-height: 46px; font-size: 14px; border-radius: 8px; margin-top: 8px; }
-.page .form form + div { margin-top: 22px; }
-.page .form form + div button { font-size: 12px; }
-.page .form > p:last-child { margin-top: 32px !important; font-size: 12px; line-height: 1.8; }
-@media (min-width: 1500px) { .story { max-width: 480px; width: 100%; margin-left: auto; margin-right: auto; } .art { height: 330px; } .brand, .signature { margin-left: 0; } }
-@media (max-width: 1000px) { .intro { padding-left: 28px; padding-right: 28px; } .story h1 { font-size: 34px; } .description { font-size: 14px; } .page .form { width: min(380px, calc(100% - 64px)); } .header { right: 28px; } }
+
+.form { align-self: center; justify-self: center; width: min(400px, calc(100% - 80px)); min-width: 0; padding: 0; }
+.frame { height: 560px; display: flex; flex-direction: column; justify-content: center; }
+.frame h2 { margin: 0; font-size: 28px; font-weight: 600; line-height: 1.3; text-align: center; letter-spacing: -.04em; animation: mode-in 180ms ease-out; }
+.formDescription { height: 42px; flex-shrink: 0; margin: 10px 0 20px; font-size: 14px; line-height: 1.5; text-align: center; color: var(--muted-foreground); }
+.tabSlot { height: 44px; flex-shrink: 0; margin-bottom: 24px; }
+.tabs { position: relative; display: grid; grid-template-columns: 1fr 1fr; height: 44px; padding: 4px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-muted); isolation: isolate; }
+.tabs::before { content: ''; position: absolute; z-index: -1; top: 4px; bottom: 4px; left: 4px; width: calc(50% - 4px); border-radius: 5px; background: var(--surface); box-shadow: 0 1px 3px var(--shadow); transition: transform 180ms ease; }
+.tabs[data-active='register']::before { transform: translateX(100%); }
+.tabs button { border: 0; background: transparent; font-size: 13px; color: var(--muted-foreground); }
+.tabs button[aria-pressed='true'] { color: var(--foreground-strong); font-weight: 600; }
+.fieldset { margin: 0; padding: 0; min-width: 0; border: 0; }
+.fields { height: 168px; display: flex; flex-direction: column; gap: 16px; animation: mode-in 180ms ease-out; }
+.field { min-width: 0; }
+.field label { display: block; margin-bottom: 7px; font-size: 13px; line-height: 20px; font-weight: 500; }
+.labelRow { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
+.labelRow button { font-size: 12px; color: var(--muted-foreground); }
+.labelRow button:hover { color: var(--foreground-strong); }
+.page .form input { width: 100%; height: 44px; min-height: 44px; padding: 0 12px; font-size: 14px; background: var(--surface); border: 1px solid var(--input); border-radius: 8px; box-shadow: 0 1px 2px var(--shadow); }
+.page .form input[name='password'] { padding-right: 44px; }
+.page .submit { width: 100%; min-height: 44px; margin-top: 8px; font-size: 14px; border-radius: 8px; }
+.secondarySlot { min-height: 38px; display: grid; place-items: center; margin-top: 14px; }
+.secondary { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 32px; padding: 0; font-size: 12px; color: var(--muted-foreground); text-decoration: underline; text-underline-offset: 4px; }
+.footnote { height: 60px; flex-shrink: 0; margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--border); font-size: 12px; line-height: 1.7; text-align: center; color: var(--muted-foreground); }
+.verifyInfo, .accountDetails { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; height: 168px; text-align: center; color: var(--muted-foreground); }
+.accountDetails strong { color: var(--foreground-strong); overflow-wrap: anywhere; }
+.accountDetails span, .verifyInfo p { font-size: 13px; line-height: 1.8; }
+.loading { height: 320px; display: grid; place-items: center; font-size: 13px; color: var(--muted-foreground); }
+.toast { position: fixed; z-index: 50; right: 20px; bottom: 20px; width: min(420px, calc(100% - 40px)); display: flex; align-items: flex-start; gap: 10px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--foreground); box-shadow: 0 8px 32px var(--shadow); animation: mode-in 180ms ease-out; }
+.toast > span { flex: 0 0 20px; height: 20px; text-align: center; border-radius: 50%; background: var(--success-background); color: var(--success); font-size: 13px; font-weight: 600; }
+.toast[data-tone='error'] > span { color: var(--danger); background: var(--danger-background); }
+.toast p { flex: 1; min-width: 0; margin: 0; font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
+.toast button { flex: 0 0 24px; min-height: 24px; color: var(--muted-foreground); }
+@keyframes mode-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
+@media (min-width: 1500px) { .story { max-width: 480px; width: 100%; margin-left: auto; margin-right: auto; } }
+@media (max-width: 1000px) { .intro { padding-left: 28px; padding-right: 28px; } .story h1 { font-size: 34px; } .description { font-size: 14px; } .form { width: min(380px, calc(100% - 64px)); } .header { right: 28px; } }
 @media (max-width: 760px) {
-  .header { position: static; display: flex; justify-content: flex-end; padding: 16px 20px; }
-  .layout { display: flex; flex-direction: column; min-height: auto; }
-  .intro { margin: 0 16px; padding: 24px; border-radius: 16px; }
-  .brand { margin-bottom: 28px; }
-  .story { margin: 0; padding: 0; }
-  .eyebrow { margin-bottom: 12px; font-size: 9px; }
-  .story h1 { font-size: 30px; margin-bottom: 14px; }
-  .description { max-width: 420px; font-size: 13px; line-height: 1.8; }
-  .art, .signature { display: none; }
-  .page .form { width: min(400px, calc(100% - 48px)); margin: 40px auto 48px; }
-  .page .form h2 { font-size: 25px; }
+ .header { top: 20px; right: 20px; }
+ .layout { grid-template-columns: minmax(0, 1fr); }
+ .intro { position: absolute; top: 20px; left: 24px; padding: 0; background: transparent; overflow: visible; }
+ .intro::before, .story, .signature { display: none; }
+ .brand { padding: 5px; border-radius: 8px; background: var(--background); }
+ .form { width: min(400px, calc(100% - 48px)); padding-top: 40px; }
+ .frame h2 { font-size: 25px; }
 }
+@media (max-height: 760px) {
+ .art, .signature { display: none; }
+ .intro { padding-top: 24px; padding-bottom: 24px; }
+ .formDescription { height: 34px; font-size: 13px; margin: 8px 0 14px; }
+ .frame { height: 460px; }
+ .frame h2 { font-size: 25px; }
+ .tabSlot { margin-bottom: 18px; }
+ .fields { height: 158px; gap: 12px; }
+ .footnote { display: none; }
+ .secondarySlot { margin-top: 10px; }
+}
+@media (max-height: 560px) {
+ .header a { display: none; }
+ .formDescription { display: none; }
+ .frame { height: 340px; }
+ .frame h2 { font-size: 22px; margin-bottom: 14px; }
+ .tabSlot { height: 36px; margin-bottom: 14px; }
+ .tabs { height: 36px; }
+ .story h1 { font-size: 28px; }
+ .eyebrow { display: none; }
+}
+@media (max-width: 760px) and (max-height: 760px) { .intro { padding: 0; } }
+@media (prefers-reduced-motion: reduce) { .frame h2, .fields, .toast { animation: none; } .tabs::before { transition: none; } }
diff --git a/apps/waterfall-wiki/tests/guidance-workspace-ui.ts b/apps/waterfall-wiki/tests/guidance-workspace-ui.ts
index dbd7264..b8b3956 100644
--- a/apps/waterfall-wiki/tests/guidance-workspace-ui.ts
+++ b/apps/waterfall-wiki/tests/guidance-workspace-ui.ts
@@ -164,6 +164,26 @@ export async function verifyGuidanceWorkspaceUI(base: string, browser: Browser)
     assert.equal(await page.getByRole("complementary").count(), 0, "Account page has no workspace sidebar");
     assert.equal(await page.getByRole("link", { name: "创建文档", exact: true }).count(), 0);
     await page.getByRole("link", { name: "返回首页", exact: true }).waitFor();
+    const accountFits = async () => assert.ok(await page.evaluate(() => document.documentElement.scrollWidth <= innerWidth + 1 && document.documentElement.scrollHeight <= innerHeight + 1), "Account page fits the viewport on both axes");
+    await accountFits();
+    await context.route("**/api/account/login", route => route.fulfill({status: 401, json: {error: "测试登录失败，请重试"}}));
+    await page.getByLabel("邮箱地址", {exact: true}).fill("fixture@example.com");
+    await page.getByLabel("密码", {exact: true}).fill("fixture-password-long");
+    await page.waitForFunction(() => document.getAnimations().every(animation => animation.playState !== "running"));
+    const beforeMessage = await page.getByLabel("邮箱地址", {exact: true}).boundingBox();
+    await page.locator("form").getByRole("button", {name: "登录", exact: true}).click();
+    await page.getByRole("alert").getByText("测试登录失败，请重试").waitFor();
+    const afterMessage = await page.getByLabel("邮箱地址", {exact: true}).boundingBox();
+    assert.equal(afterMessage?.y, beforeMessage?.y, "Status messages must not move the form");
+    await accountFits();
+    await page.getByRole("button", {name: "关闭提示", exact: true}).click();
+    await context.route("**/api/account/forgot", route => route.fulfill({json: {ok: true, message: "若账户符合条件，重设链接将发送到邮箱。"}}));
+    await page.getByRole("button", {name: "忘记密码？", exact: true}).click();
+    await page.getByRole("heading", {name: "找回你的账户", exact: true}).waitFor();
+    await page.getByLabel("邮箱地址", {exact: true}).fill("fixture@example.com");
+    await page.getByRole("button", {name: "发送重设链接", exact: true}).click();
+    await page.getByRole("status").getByText("若账户符合条件，重设链接将发送到邮箱。").waitFor();
+    await page.getByRole("button", {name: "返回登录", exact: true}).click();
     await page.getByRole("button", { name: "创建账户", exact: true }).click();
     await page.getByRole("heading", { name: "创建你的账户" }).waitFor();
     await page
@@ -181,6 +201,26 @@ export async function verifyGuidanceWorkspaceUI(base: string, browser: Browser)
         path: process.env.WORKSPACE_SCREENSHOT_DIR + "/account.png",
         fullPage: true,
       });
+    for (const viewport of [{width: 390, height: 844}, {width: 320, height: 568}]) {
+      await page.setViewportSize(viewport);
+      await accountFits();
+      await page.getByLabel("邮箱地址", {exact: true}).waitFor({state: "visible"});
+    }
+    await page.setViewportSize({width: 1440, height: 1000});
+    await context.route("**/api/account/reset", async route => {
+      const body = route.request().postDataJSON();
+      assert.equal(body.token, "f".repeat(64));
+      assert.equal(body.password, "replacement-fixture-password");
+      await route.fulfill({json: {ok: true}});
+    });
+    await visitBrowserDocument(page, base + "/account?reset=" + "f".repeat(64));
+    await page.getByRole("heading", {name: "设置新密码", exact: true}).waitFor();
+    assert.equal(new URL(page.url()).searchParams.has("reset"), false, "Recovery token is removed from the visible URL");
+    await page.getByLabel("新密码", {exact: true}).fill("replacement-fixture-password");
+    await page.getByLabel("确认新密码", {exact: true}).fill("replacement-fixture-password");
+    await page.getByRole("button", {name: "保存新密码", exact: true}).click();
+    await page.getByRole("heading", {name: "欢迎回来", exact: true}).waitFor();
+    await accountFits();
     await navigate(base + "/write");
     await page.getByRole("heading", { name: "登录后开始编写" }).waitFor();
     signedIn = true;
diff --git a/scripts/verify-studio-visual.cjs b/scripts/verify-studio-visual.cjs
index dee8da8..99d5a7d 100644
--- a/scripts/verify-studio-visual.cjs
+++ b/scripts/verify-studio-visual.cjs
@@ -38,14 +38,19 @@ const assert=require('node:assert/strict');
  const accountSections=await page.locator('#account-content > div > section').evaluateAll(elements=>elements.map(el=>{const r=el.getBoundingClientRect();return {x:r.x,right:r.right,width:r.width}}));
  assert.equal(accountSections.length,2);
  assert.ok(accountSections[0].right<=accountSections[1].x,'Brand panel and credentials occupy separate columns');
+ const accountFits=async()=>assert.ok(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth+1&&document.documentElement.scrollHeight<=innerHeight+1),'Account document fits both viewport axes');
+ const accountControlsFit=async()=>assert.ok(await page.locator('#account-content input, #account-content button[type="submit"]').evaluateAll(elements=>elements.every(el=>{const r=el.getBoundingClientRect();return r.left>=0&&r.right<=innerWidth&&r.top>=0&&r.bottom<=innerHeight})),'Account inputs and submit button remain visible, not merely clipped');
+ await accountFits();await accountControlsFit();
  await page.screenshot({path:dir+'/account-desktop.png',fullPage:true});
  await page.getByRole('button',{name:'创建账户',exact:true}).click();
  await page.getByRole('heading',{name:'创建你的账户',exact:true}).waitFor();
  await page.screenshot({path:dir+'/account-register.png',fullPage:true});
  await page.getByRole('button',{name:'登录',exact:true}).click();
  await page.setViewportSize({width:390,height:844});
- assert.ok(await page.evaluate(()=>document.documentElement.scrollWidth<=innerWidth),'Mobile account page must not overflow horizontally');
+ await accountFits();await accountControlsFit();
  await page.screenshot({path:dir+'/account-mobile.png',fullPage:true});
+ await page.setViewportSize({width:320,height:568});await accountFits();await accountControlsFit();
+ await page.screenshot({path:dir+'/account-mobile-compact.png',fullPage:true});
  await page.setViewportSize({width:1100,height:1000});
  await page.goto(base+'/graphic',{waitUntil:'networkidle'});
  assert.equal(new URL(page.url()).pathname,'/graphic');