fix(a11y): improve accessibility across all views

- FAQ: add aria-expanded/aria-controls/role=region via initFaqA11y()
- TabBar/Auth/Center/Preview tabs: add role=tablist/tab/aria-selected
- View switching: focus management + aria-live announcement region
- Role cards: role=button, tabindex=0, Enter/Space keyboard support
- Login form: autocomplete=username/current-password (was off)
- Register form: autocomplete=username/new-password
- Add skip-link for keyboard users
- Add :focus-visible outlines on all interactive elements
- Improve placeholder contrast (0.45 → 0.7 opacity)
- Add prefers-reduced-motion media query
- Add aria-live=polite on dynamic role-list/income-list containers
- Add aria-label on all view sections

app.js

@@ -96,6 +96,19 @@
   let viewHistory = ['landing'];
 
   // --- U9: Unified showView with history and tab-bar sync ---
+  // Human-readable labels for screen-reader announcements
+  const viewLabels = {
+    landing: '首页',
+    auth: '登录 / 注册',
+    'role-library': '角色库',
+    'role-detail': '角色详情',
+    distill: '蒸馏前任',
+    about: '关于 Eternal AI',
+    onboarding: '创作者入驻',
+    'creator-center': '创作者管理中心',
+    creator: '角色编辑',
+  };
+
   function showView(name, trackHistory = true) {
     Object.entries(views).forEach(([key, el]) => {
       if (el) el.classList.toggle('active', key === name);
@@ -105,6 +118,20 @@
     }
     window.scrollTo({ top: 0, behavior: 'smooth' });
     updateTabBar(name);
+
+    // a11y: move focus to the new view so screen readers announce it
+    const target = views[name];
+    if (target) {
+      target.setAttribute('tabindex', '-1');
+      // Defer focus to after the scroll/layout settles
+      setTimeout(() => target.focus({ preventScroll: true }), 50);
+    }
+
+    // a11y: announce the view change to screen readers via live region
+    const announcer = document.getElementById('sr-announce');
+    if (announcer) {
+      announcer.textContent = viewLabels[name] ? `已进入${viewLabels[name]}` : '';
+    }
   }
 
   function goBack() {
@@ -127,7 +154,9 @@
     };
     const activeTab = tabMap[viewName] || 'tab-home';
     document.querySelectorAll('.tab-bar__item').forEach((item) => {
-      item.classList.toggle('active', item.dataset.tabAction === activeTab);
+      const isActive = item.dataset.tabAction === activeTab;
+      item.classList.toggle('active', isActive);
+      item.setAttribute('aria-selected', isActive ? 'true' : 'false');
     });
   }
 
@@ -180,7 +209,9 @@
   function switchAuthTab(tab) {
     activeAuthTab = tab;
     document.querySelectorAll('.auth-tab').forEach((t) => {
-      t.classList.toggle('active', t.dataset.tab === tab);
+      const isActive = t.dataset.tab === tab;
+      t.classList.toggle('active', isActive);
+      t.setAttribute('aria-selected', isActive ? 'true' : 'false');
     });
     document.querySelectorAll('.auth-form').forEach((f) => {
       f.classList.toggle('active', f.dataset.form === tab);
@@ -235,7 +266,7 @@
     listEl.innerHTML = mockRoles
       .map(
         (role) => `
-      <article class="role-card" data-role-id="${role.id}">
+      <article class="role-card" data-role-id="${role.id}" role="button" tabindex="0" aria-label="${role.name}，${role.desc}，每月${role.price}元">
         <img class="role-card__avatar" src="${role.avatar}" alt="${role.name}" />
         <div class="role-card__info">
           <h3 class="role-card__name">${role.name}</h3>
@@ -279,6 +310,35 @@
     const isOpen = answer.style.display === 'block';
     answer.style.display = isOpen ? 'none' : 'block';
     icon.textContent = isOpen ? '+' : '−';
+    // a11y: sync aria-expanded so screen readers know the toggle state
+    button.setAttribute('aria-expanded', isOpen ? 'false' : 'true');
+  }
+
+  // a11y: wire up FAQ buttons with aria-expanded / aria-controls on load
+  function initFaqA11y() {
+    const faqButtons = document.querySelectorAll('.faq-q');
+    faqButtons.forEach((btn, index) => {
+      const item = btn.closest('.faq-item');
+      const answer = item.querySelector('.faq-a');
+      const answerId = `faq-a-${index + 1}`;
+      if (answer) {
+        answer.id = answerId;
+        answer.setAttribute('role', 'region');
+        answer.setAttribute('aria-labelledby', `faq-q-${index + 1}`);
+      }
+      btn.id = `faq-q-${index + 1}`;
+      btn.setAttribute('aria-expanded', 'false');
+      btn.setAttribute('aria-controls', answerId);
+    });
+  }
+
+  // a11y: label each view section for screen-reader navigation
+  function initViewA11y() {
+    Object.entries(views).forEach(([key, el]) => {
+      if (el && viewLabels[key]) {
+        el.setAttribute('aria-label', viewLabels[key]);
+      }
+    });
   }
 
   // --- U7: Creator Center ---
@@ -294,7 +354,7 @@
     listEl.innerHTML = roles
       .map(
         (role) => `
-      <article class="role-card" data-role-id="${role.id}">
+      <article class="role-card" data-role-id="${role.id}" role="button" tabindex="0" aria-label="${role.name}，${role.status === 'running' ? '运行中' : '已停止'}">
         <img class="role-card__avatar" src="${role.avatar}" alt="${role.name}" />
         <div class="role-card__info">
           <h3 class="role-card__name">${role.name}</h3>
@@ -336,7 +396,9 @@
   function switchCenterTab(tab) {
     activeCenterTab = tab;
     document.querySelectorAll('.center-tab').forEach((t) => {
-      t.classList.toggle('active', t.dataset.centerTab === tab);
+      const isActive = t.dataset.centerTab === tab;
+      t.classList.toggle('active', isActive);
+      t.setAttribute('aria-selected', isActive ? 'true' : 'false');
     });
     document.querySelectorAll('.center-panel').forEach((p) => {
       p.classList.toggle('active', p.id === `center-${tab}`);
@@ -571,11 +633,25 @@ ${data.secrets || '无'}
 
   function updateTabs() {
     document.querySelectorAll('.preview-tab').forEach((tab) => {
-      tab.classList.toggle('active', tab.dataset.tab === activePreview);
+      const isActive = tab.dataset.tab === activePreview;
+      tab.classList.toggle('active', isActive);
+      tab.setAttribute('aria-selected', isActive ? 'true' : 'false');
     });
   }
 
   // --- Event delegation ---
+  // a11y: keyboard support for role cards (Enter / Space activates them)
+  document.addEventListener('keydown', (e) => {
+    if (e.key !== 'Enter' && e.key !== ' ') return;
+    const roleCard = e.target.closest('.role-card');
+    if (roleCard && !e.target.closest('[data-action]')) {
+      e.preventDefault();
+      const roleId = roleCard.dataset.roleId;
+      renderRoleDetail(roleId);
+      showView('role-detail');
+    }
+  });
+
   document.addEventListener('click', (e) => {
     // FAQ toggle (U4)
     const faqBtn = e.target.closest('.faq-q');
@@ -826,4 +902,6 @@ ${data.secrets || '无'}
   updateSystemPromptPreview();
   updateLandingCard();
   updateTabBar('landing');
+  initFaqA11y();
+  initViewA11y();
 })();

index.html

@@ -7,9 +7,10 @@
   <link rel="preconnect" href="https://fonts.googleapis.com" />
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
   <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap" rel="stylesheet" />
-  <link rel="stylesheet" href="styles.css?v=6" />
+  <link rel="stylesheet" href="styles.css?v=7" />
 </head>
 <body>
+  <a href="#landing" class="skip-link">跳到主内容</a>
   <main class="app">
     <!-- P1: Landing View -->
     <section id="landing" class="view view--landing active">
@@ -53,20 +54,20 @@
         <div class="stepper" aria-hidden="true"></div>
       </header>
 
-      <div class="auth-tabs">
+      <div class="auth-tabs" role="tablist" aria-label="登录与注册">
-        <button class="auth-tab active" type="button" data-tab="login">登录</button>
+        <button class="auth-tab active" type="button" role="tab" aria-selected="true" data-tab="login">登录</button>
-        <button class="auth-tab" type="button" data-tab="register">注册</button>
+        <button class="auth-tab" type="button" role="tab" aria-selected="false" data-tab="register">注册</button>
       </div>
 
-      <form id="login-form" class="auth-form active" autocomplete="off" data-form="login">
+      <form id="login-form" class="auth-form active" autocomplete="on" data-form="login">
         <div class="field-group">
           <label class="field">
             <span class="field__label">手机号 / 用户名</span>
-            <input class="field__input" name="account" type="text" placeholder="请输入手机号或用户名" required />
+            <input class="field__input" name="account" type="text" autocomplete="username" placeholder="请输入手机号或用户名" required />
           </label>
           <label class="field">
             <span class="field__label">密码</span>
-            <input class="field__input" name="password" type="password" placeholder="请输入密码" required />
+            <input class="field__input" name="password" type="password" autocomplete="current-password" placeholder="请输入密码" required />
           </label>
         </div>
         <div class="form-actions">
@@ -75,19 +76,19 @@
         <p class="auth-hint">登录后可查看角色库、管理已订阅的角色。</p>
       </form>
 
-      <form id="register-form" class="auth-form" autocomplete="off" data-form="register">
+      <form id="register-form" class="auth-form" autocomplete="on" data-form="register">
         <div class="field-group">
           <label class="field">
             <span class="field__label">手机号 / 用户名</span>
-            <input class="field__input" name="account" type="text" placeholder="设置登录账号" required />
+            <input class="field__input" name="account" type="text" autocomplete="username" placeholder="设置登录账号" required />
           </label>
           <label class="field">
             <span class="field__label">密码</span>
-            <input class="field__input" name="password" type="password" placeholder="设置密码" required minlength="6" />
+            <input class="field__input" name="password" type="password" autocomplete="new-password" placeholder="设置密码" required minlength="6" />
           </label>
           <label class="field">
             <span class="field__label">确认密码</span>
-            <input class="field__input" name="confirmPassword" type="password" placeholder="再次输入密码" required />
+            <input class="field__input" name="confirmPassword" type="password" autocomplete="new-password" placeholder="再次输入密码" required />
           </label>
         </div>
         <div class="form-actions">
@@ -108,7 +109,7 @@
         <div class="stepper" aria-hidden="true"></div>
       </header>
 
-      <div class="role-list" id="role-list"></div>
+      <div class="role-list" id="role-list" aria-live="polite" aria-label="角色列表"></div>
 
       <div class="empty-state" id="library-empty" hidden>
         <p class="empty-state__text">你还没有绑定专属创作者</p>
@@ -324,15 +325,15 @@
         <div class="stepper" aria-hidden="true"></div>
       </header>
 
-      <div class="center-tabs">
+      <div class="center-tabs" role="tablist" aria-label="创作者管理中心">
-        <button class="center-tab active" type="button" data-center-tab="roles">我的角色</button>
+        <button class="center-tab active" type="button" role="tab" aria-selected="true" data-center-tab="roles">我的角色</button>
-        <button class="center-tab" type="button" data-center-tab="income">收入</button>
+        <button class="center-tab" type="button" role="tab" aria-selected="false" data-center-tab="income">收入</button>
-        <button class="center-tab" type="button" data-center-tab="settings">我的</button>
+        <button class="center-tab" type="button" role="tab" aria-selected="false" data-center-tab="settings">我的</button>
       </div>
 
       <!-- Tab: Roles -->
       <div class="center-panel active" id="center-roles">
-        <div class="role-list" id="creator-role-list"></div>
+        <div class="role-list" id="creator-role-list" aria-live="polite" aria-label="我的角色列表"></div>
         <div class="form-actions">
           <button class="btn btn--primary btn--block" type="button" data-action="new-role">+ 新建角色</button>
         </div>
@@ -346,7 +347,7 @@
         </div>
         <div class="income-section">
           <h3 class="income-section__title">流水明细</h3>
-          <div class="income-list" id="income-list">
+          <div class="income-list" id="income-list" aria-live="polite" aria-label="收入流水">
             <p class="income-empty">暂无流水记录</p>
           </div>
         </div>
@@ -561,9 +562,9 @@
           </div>
         </div>
         <div class="result-panel__preview">
-          <div class="preview-tabs">
+          <div class="preview-tabs" role="tablist" aria-label="配置文件预览">
-            <button class="preview-tab active" type="button" data-tab="soul">Soul.md</button>
+            <button class="preview-tab active" type="button" role="tab" aria-selected="true" data-tab="soul">Soul.md</button>
-            <button class="preview-tab" type="button" data-tab="config">config.yaml</button>
+            <button class="preview-tab" type="button" role="tab" aria-selected="false" data-tab="config">config.yaml</button>
           </div>
           <pre class="preview-code" id="preview-code"><code></code></pre>
         </div>
@@ -576,21 +577,24 @@
   </main>
 
   <!-- Tab Bar (U8) -->
-  <nav class="tab-bar" id="tab-bar">
+  <nav class="tab-bar" id="tab-bar" role="tablist" aria-label="主导航">
-    <button class="tab-bar__item active" type="button" data-tab-action="tab-home">
+    <button class="tab-bar__item active" type="button" role="tab" aria-selected="true" data-tab-action="tab-home">
-      <span class="tab-bar__icon">⌂</span>
+      <span class="tab-bar__icon" aria-hidden="true">⌂</span>
       <span class="tab-bar__label">首页</span>
     </button>
-    <button class="tab-bar__item" type="button" data-tab-action="tab-distill">
+    <button class="tab-bar__item" type="button" role="tab" aria-selected="false" data-tab-action="tab-distill">
-      <span class="tab-bar__icon">♡</span>
+      <span class="tab-bar__icon" aria-hidden="true">♡</span>
       <span class="tab-bar__label">蒸馏前任</span>
     </button>
-    <button class="tab-bar__item" type="button" data-tab-action="tab-mine">
+    <button class="tab-bar__item" type="button" role="tab" aria-selected="false" data-tab-action="tab-mine">
-      <span class="tab-bar__icon">☺</span>
+      <span class="tab-bar__icon" aria-hidden="true">☺</span>
       <span class="tab-bar__label" id="tab-mine-label">我的</span>
     </button>
   </nav>
 
+  <!-- Screen reader live region for view change announcements -->
+  <div id="sr-announce" class="visually-hidden" role="status" aria-live="polite" aria-atomic="true"></div>
+
   <script src="app.js"></script>
 </body>
 </html>

styles.css

@@ -433,7 +433,7 @@ body {
 }
 
 .field__input::placeholder {
-  color: rgba(154, 163, 194, 0.45);
+  color: rgba(154, 163, 194, 0.7);
 }
 
 .field__input:focus {
@@ -1339,3 +1339,78 @@ textarea.field__input--tall {
     max-width: 560px;
   }
 }
+
+/* ===== Accessibility (a11y) ===== */
+
+/* Visually hidden, but available to screen readers */
+.visually-hidden {
+  position: absolute !important;
+  width: 1px !important;
+  height: 1px !important;
+  padding: 0 !important;
+  margin: -1px !important;
+  overflow: hidden !important;
+  clip: rect(0, 0, 0, 0) !important;
+  white-space: nowrap !important;
+  border: 0 !important;
+}
+
+/* Visible keyboard focus for all interactive elements */
+.btn:focus-visible,
+.icon-btn:focus-visible,
+.tab-bar__item:focus-visible,
+.auth-tab:focus-visible,
+.center-tab:focus-visible,
+.faq-q:focus-visible,
+.preview-tab:focus-visible,
+.footer-link:focus-visible,
+.role-card:focus-visible {
+  outline: 2px solid var(--accent-soft);
+  outline-offset: 2px;
+  border-radius: 6px;
+}
+
+/* Views can receive focus via JS for screen-reader navigation */
+.view {
+  outline: none;
+}
+
+.view:focus-visible {
+  outline: none;
+}
+
+/* FAQ answer region: ensure it's focusable-friendly */
+.faq-a {
+  outline: none;
+}
+
+/* Skip link for keyboard users */
+.skip-link {
+  position: absolute;
+  top: -40px;
+  left: 8px;
+  z-index: 1000;
+  padding: 8px 16px;
+  background: var(--accent);
+  color: #fff;
+  border-radius: 8px;
+  font-size: 14px;
+  text-decoration: none;
+  transition: top 0.2s;
+}
+
+.skip-link:focus {
+  top: 8px;
+}
+
+/* Respect reduced motion preference */
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+    scroll-behavior: auto !important;
+  }
+}