/* =========================================================
   English Learning App - Stage 2 手机 HTML 原型 V1
   styles.css
   视觉目标：温暖、清爽、手机 App 感、大按钮、字号适合阅读
   ========================================================= */

:root {
  --color-bg: #efe6d8;
  --color-app-bg: #fbf7f0;
  --color-primary: #ff9f5a;
  --color-primary-dark: #f07f3a;
  --color-primary-soft: #ffe6d1;
  --color-secondary: #6fb7a3;
  --color-secondary-soft: #e1f2ec;
  --color-text: #3a332c;
  --color-text-soft: #7a7165;
  --color-border: #ece2d3;
  --color-card: #ffffff;
  --color-danger: #e2685a;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-card: 0 2px 10px rgba(58, 51, 44, 0.06);
  /* 1366 视口目标工作区约 1080–1120，左右边距对称 */
  --app-content-max: 1120px;
  --bottom-nav-space: calc(72px + env(safe-area-inset-bottom, 0px));
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  min-height: 100dvh;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 50% -10%, #fff8ee 0%, transparent 55%),
    linear-gradient(180deg, #f6efe4 0%, var(--color-bg) 40%, #e8dccb 100%);
  color: var(--color-text);
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}

/* 单一居中工作区：不用 flex 居中子项，避免 Chrome headless 合成偏移 */
.phone-frame {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: block;
  padding: 0;
  background: transparent;
}

#app {
  width: min(var(--app-content-max), calc(100vw - 48px));
  max-width: var(--app-content-max);
  min-height: 100vh;
  min-height: 100dvh;
  margin-left: auto;
  margin-right: auto;
  background: var(--color-app-bg);
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 0 0 1px rgba(58, 51, 44, 0.06);
  border-radius: 0;
  overflow: visible;
  border: none;
}

@media (max-width: 767px) {
  #app {
    width: 100%;
    max-width: 100%;
    box-shadow: none;
  }

  .phone-frame {
    background: var(--color-app-bg);
  }
}

@media (min-width: 768px) {
  /* 桌面：顶栏/底栏进入文档流，禁止 viewport fixed，消除左右空栏假象 */
  #app-header,
  .p8-update-banner {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
  }

  #bottom-nav {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    pointer-events: auto;
    width: 100%;
  }

  #page-container {
    padding-bottom: 16px;
  }
}

/* ---------- 顶部栏 ---------- */
#app-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px 12px;
  background: var(--color-app-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-shrink: 0;
}

.btn-back {
  min-width: 44px;
  min-height: 44px;
  height: auto;
  padding: 8px 14px 8px 10px;
  border-radius: 22px;
  border: none;
  background: var(--color-card);
  color: var(--color-text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex-shrink: 0;
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

.btn-back-icon {
  font-size: 20px;
  line-height: 1;
  margin-top: -1px;
}

.btn-back-label {
  font-size: 14px;
}

.btn-back[hidden] {
  visibility: hidden;
}

.header-title-group {
  flex: 1;
  min-width: 0;
}

#header-title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

#header-subtitle {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--color-text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-badge {
  font-size: 11px;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  padding: 3px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}

/* ---------- 页面容器 ---------- */
#page-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 16px var(--bottom-nav-space);
  -webkit-overflow-scrolling: touch;
  width: 100%;
  max-width: 100%;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.page-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.page-desc {
  font-size: 13.5px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin: 0 0 14px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-soft);
  margin: 20px 2px 10px;
}

.hint {
  font-size: 12.5px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin: 6px 0 0;
}

.hint-strong {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin: 4px 0 0;
}

.fallback-hint {
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.disclaimer {
  font-size: 12.5px;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  line-height: 1.6;
  margin: 0 0 14px;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.welcome-card {
  background: linear-gradient(135deg, var(--color-primary-soft), #fff);
}

.welcome-hello {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 4px;
}

.welcome-sub {
  font-size: 13px;
  color: var(--color-text-soft);
  margin: 0;
}

.progress-percent {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.progress-bar {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--color-border);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width 0.25s ease;
}

/* ---------- 按钮 ---------- */
.btn {
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  padding: 13px 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform 0.06s ease, opacity 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
  display: flex;
}

.btn-sm {
  padding: 9px 12px;
  font-size: 13px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:active {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-secondary-soft);
  color: #2f6656;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary-dark);
  padding: 8px 4px;
}

.button-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

/* ---------- 首页入口格子 ---------- */
.entry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 6px;
}

.entry-tile {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

.entry-tile:active {
  transform: scale(0.97);
}

.entry-emoji {
  font-size: 26px;
}

.entry-name {
  font-size: 13.5px;
  font-weight: 600;
}

.entry-code {
  font-size: 11px;
  color: var(--color-text-soft);
}

/* ---------- 列表式入口行 ---------- */
.entry-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 8px;
}

.entry-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 13px 14px;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  text-align: left;
}

.entry-row:active {
  transform: scale(0.98);
}

.entry-row-emoji {
  font-size: 22px;
  flex-shrink: 0;
}

.entry-row-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.entry-row-text b {
  font-size: 14.5px;
}

.entry-row-text small {
  font-size: 12px;
  color: var(--color-text-soft);
}

.entry-row-arrow {
  color: var(--color-text-soft);
  font-size: 18px;
  flex-shrink: 0;
}

/* ---------- 列表 / 单词句子条目 ---------- */
.list {
  padding: 6px;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--color-border);
}

.list-item:last-child {
  border-bottom: none;
}

.list-item-clickable {
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  text-align: left;
}

.list-item-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.list-item-title {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 230px;
}

.list-item-sub {
  font-size: 12px;
  color: var(--color-text-soft);
}

.list-item-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--color-secondary-soft);
  color: #2f6656;
  white-space: nowrap;
}

.tag-soft {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12.5px;
  cursor: pointer;
}

.input-block {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font-size: 14px;
}

.quick-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

/* ---------- 今日学习任务列表 ---------- */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
}

.task-check {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-soft);
  font-size: 12.5px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.task-item.done .task-check {
  background: var(--color-secondary);
  color: #fff;
}

.task-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.task-title {
  font-size: 13.5px;
  font-weight: 600;
}

.task-sub {
  font-size: 11.5px;
  color: var(--color-text-soft);
}

/* ---------- 自动背单词 / 复习卡片 ---------- */
.auto-word-card {
  text-align: center;
}

.auto-word-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.auto-word-main {
  padding: 10px 0 6px;
}

.auto-word-text {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.auto-word-ipa {
  font-size: 15px;
  color: var(--color-text-soft);
  margin-top: 4px;
}

.auto-word-visual {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px;
  min-height: 42px;
  margin-top: 10px;
}

.syllable-chip,
.letter-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 11px;
  border-radius: var(--radius-sm);
  background: var(--color-secondary-soft);
  color: #2f6656;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.syllable-chip-active,
.letter-chip-active {
  background: var(--color-primary);
  color: #fff;
  transform: scale(1.08);
}

.visual-sep {
  color: var(--color-text-soft);
  font-weight: 600;
  font-size: 15px;
}

.blend-word {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.full-word-readout {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.chinese-readout {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.auto-word-zh {
  font-size: 16px;
  margin-top: 10px;
  font-weight: 600;
}

/* ---------- P11 学习区：小型暂停提示（不遮挡单词内容） ---------- */
.p11-learn-area {
  position: relative;
  margin-bottom: 12px;
}

.p11-pause-hint {
  position: relative;
  z-index: 2;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  margin: 0 0 10px 0;
  padding: 8px 14px;
  max-width: 100%;
  border-radius: 999px;
  border: 1.5px solid #e08a3a;
  background: #fffaf3;
  color: #2a2a2a;
  box-shadow: 0 2px 8px rgba(40, 30, 10, 0.08);
  pointer-events: none;
}

.p11-pause-hint[hidden] {
  display: none !important;
}

.p11-pause-hint-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: #c45e12;
}

.p11-pause-hint-text {
  font-size: 12px;
  line-height: 1.35;
  color: #5a5348;
}

/* ---------- P11 Aria / Andrew 专业声音选择 ---------- */
.p11-bank-chips,
.p11-mode-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.p11-bank-chip,
.p11-mode-chip {
  border: 1px solid var(--border-soft, #e5e7eb);
  background: var(--surface-2, #f9fafb);
  color: var(--text, #111827);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.p11-bank-chip-active,
.p11-mode-chip-active {
  border-color: var(--primary, #2563eb);
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary, #2563eb);
  font-weight: 600;
}

.p6a-field {
  margin-top: 10px;
}

.p6a-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.p6a-chips-wrap {
  max-height: 120px;
  overflow-y: auto;
}

.p6a-chip {
  border: 1px solid var(--border, #e2e8f0);
  background: var(--surface, #fff);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  min-height: 32px;
}

.p6a-chip-active {
  border-color: var(--primary, #2563eb);
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary, #2563eb);
  font-weight: 600;
}

.p6a-summary-list li {
  margin-bottom: 6px;
}

.p6a-session-hud .p6a-hud-line {
  margin: 4px 0;
}

@media (min-width: 900px) {
  .p6a-chips-wrap {
    max-height: 160px;
  }
}

.p6a-chips-scroll {
  overflow-x: auto;
  flex-wrap: nowrap;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
}

.p6a-catalog-section {
  margin-bottom: 14px;
}

.p6a-catalog-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.p6a-catalog-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-card);
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.p6a-catalog-row:disabled,
.p6a-catalog-row[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.p6a-catalog-active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.p6a-catalog-row-title {
  font-weight: 600;
  font-size: 14px;
}

.p6a-catalog-row-meta {
  font-size: 12px;
  color: var(--color-text-soft);
  line-height: 1.45;
}

/* ---------- P9 专业词书中心 ---------- */
.p11-wordbook-center {
  margin-bottom: 12px;
}

.p9-dash-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 10px 0 8px;
}

@media (max-width: 480px) {
  .p9-dash-grid {
    grid-template-columns: 1fr;
  }
}

.p9-dash-cell {
  background: var(--color-surface-soft, rgba(0, 0, 0, 0.03));
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.p9-dash-label {
  font-size: 11px;
  color: var(--color-text-soft);
}

.p9-dash-value {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.p9-dash-hint {
  margin-top: 4px;
}

.p9-family-dash-list {
  display: grid;
  gap: 8px;
  margin: 10px 0 6px;
}

.p9-family-dash {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  background: var(--color-surface-soft, rgba(0, 0, 0, 0.02));
}

.p9-family-dash-title {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 6px;
}

.p9-family-dash-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 12px;
  font-size: 12px;
  color: var(--color-text-soft);
  line-height: 1.45;
}

.p9-family-dash-grid b {
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 768px) {
  .p9-family-dash-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.p10a-train-modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.p10a-train-modes .btn {
  text-align: left;
  min-height: 52px;
}

.p10a-wb-family {
  margin-bottom: 10px;
}

.p10a-lookup-card {
  margin-bottom: 8px;
}

.p10a-cockpit-card {
  margin-bottom: 12px;
}

/* P10A-R2：七模块学习驾驶舱首屏磁贴 */
.p10a-module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 4px;
}

.p10a-module-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-align: left;
  text-decoration: none;
  width: 100%;
  min-height: 72px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card);
  color: var(--color-text);
  cursor: pointer;
  font: inherit;
}

.p10a-module-tile:hover,
.p10a-module-tile:focus-visible {
  border-color: var(--color-primary);
  outline: none;
}

.p10a-module-tile-kicker {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.p10a-module-tile-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
}

.p10a-module-tile-stat {
  font-size: 12px;
  color: var(--color-text-soft);
  line-height: 1.35;
}

.p10a-wordbook-details {
  margin: 8px 0 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card);
  padding: 0 14px 12px;
}

.p10a-wordbook-details > summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 2px 10px;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.p10a-wordbook-details > summary::-webkit-details-marker {
  display: none;
}

.p10a-wordbook-details > summary::after {
  content: "展开";
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-soft);
}

.p10a-wordbook-details[open] > summary::after {
  content: "收起";
}

.p10a-wordbook-details .hint {
  margin-top: 0;
}

@media (max-width: 900px) {
  .p10a-module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .p10a-module-grid {
    grid-template-columns: 1fr;
  }
}

.p9-wb-family {
  margin-top: 14px;
}

.p9-wb-family-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 8px;
}

.p9-wb-family-title {
  font-weight: 700;
  font-size: 15px;
}

.p9-wb-family-target {
  font-size: 12px;
  color: var(--color-text-soft);
}

.p9-wb-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
}

@media (max-width: 480px) {
  .p9-wb-card-grid {
    grid-template-columns: 1fr;
  }
}

.p9-wb-card {
  text-align: left;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 12px;
  padding: 12px;
  background: var(--color-surface, #fff);
  cursor: pointer;
  width: 100%;
}

.p9-wb-card:disabled,
.p9-wb-card[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

.p9-wb-card-active {
  border-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.2);
}

.p9-wb-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.p9-wb-card-title {
  font-weight: 600;
  font-size: 14px;
}

.p9-wb-card-purpose {
  font-size: 12px;
  color: var(--color-text-soft);
  margin: 0 0 6px;
}

.p9-wb-card-stats {
  font-size: 11px;
  line-height: 1.45;
  color: var(--color-text-soft);
  margin: 0;
}

.tag-warn {
  background: rgba(234, 88, 12, 0.12);
  color: #c2410c;
}

.p11-bank-chips-hidden {
  display: none !important;
}

.p6b-sentence {
  padding: 10px 8px;
  border-radius: 10px;
  margin-bottom: 8px;
  border: 1px solid transparent;
}

.p6b-sentence-active {
  border-color: rgba(37, 99, 235, 0.35);
  background: rgba(37, 99, 235, 0.06);
}

.p6b-sentence-en {
  line-height: 1.55;
  font-size: 16px;
  margin: 0;
}

.p6b-word {
  display: inline;
  padding: 0 1px;
  margin: 0;
  border: none;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-decoration: underline dotted rgba(37, 99, 235, 0.45);
}

.p6b-word:focus-visible {
  outline: 2px solid var(--primary, #2563eb);
  border-radius: 2px;
}

.p6b-translation {
  margin: 6px 0 0;
  color: var(--text-muted, #64748b);
  font-size: 14px;
}

.p6b-grammar {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.45;
}

.p6b-no-fake-ai {
  margin-top: 6px;
}

.p6b-controls {
  margin-top: 10px;
  margin-bottom: 10px;
}

.p6b-word-card {
  margin-top: 10px;
}

.p7-voice-panel {
  margin-top: 10px;
  margin-bottom: 8px;
}

.p7-voice-card {
  padding: 12px 14px;
}

.p7-voice-cap {
  font-size: 12.5px;
  line-height: 1.5;
}

.p7-tutor-offline-banner {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md, 12px);
}

.p7-tutor-drill .teacher-line {
  margin-top: 6px;
}

.p7-tutor-result {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border-soft, rgba(0, 0, 0, 0.08));
}

#scr-P84 .p7-voice-panel .btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
}

@media (max-width: 420px) {
  .p6b-controls .button-grid-2 {
    gap: 6px;
  }
}

@media (min-width: 900px) {
  #scr-P84 .p6b-controls {
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
  }
}

.p11-status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.button-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 8px;
}

.btn-sm {
  padding: 8px 6px;
  font-size: 12px;
}

.p11-playback-toolbar {
  padding: 12px 16px;
}

.p11-speed-segment {
  display: flex;
  gap: 8px;
  margin: 8px 0;
}

.p11-speed-btn {
  flex: 1;
  padding: 8px 6px;
  font-size: 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
}

.p11-speed-btn-active {
  border-color: var(--color-primary);
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-primary);
  font-weight: 600;
}

.p11-voice-card {
  padding: 12px 16px;
}

#p11-spelling-source {
  margin-top: 2px;
}

#p11-audio-source {
  margin-top: 2px;
}

.voice-gender-select {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.voice-gender-label {
  font-size: 13.5px;
  color: var(--color-text-soft);
  flex-shrink: 0;
}

.voice-gender-option {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  cursor: pointer;
}

.voice-gender-option input {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.step-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 12px 0 10px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-border);
}

.dot.dot-active {
  background: var(--color-primary);
}

.dot.dot-done {
  background: var(--color-secondary);
}

/* ---------- 表单元素 ---------- */
.input, .select, .textarea {
  width: 100%;
  font-size: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text);
  font-family: inherit;
  margin-bottom: 12px;
}

.textarea {
  resize: vertical;
  line-height: 1.6;
}

.field-label {
  display: block;
  font-size: 12.5px;
  color: var(--color-text-soft);
  margin: 4px 2px 6px;
  font-weight: 600;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 8px;
  border-bottom: 1px solid var(--color-border);
}

.setting-row:last-child {
  border-bottom: none;
}

.setting-label {
  font-size: 14px;
  font-weight: 600;
}

.setting-value {
  font-size: 13px;
  color: var(--color-text-soft);
}

.select {
  margin-bottom: 0;
  width: auto;
  max-width: 140px;
}

.toggle {
  width: 46px;
  height: 26px;
  border-radius: 999px;
  border: none;
  background: var(--color-border);
  position: relative;
  cursor: pointer;
  padding: 0;
}

.toggle[data-on="true"] {
  background: var(--color-secondary);
}

.toggle-dot {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: left 0.15s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle[data-on="true"] .toggle-dot {
  left: 23px;
}

/* ---------- 文本理解结果 / 单句精讲卡片 ---------- */
.sentence-analysis-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.sentence-en {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.sentence-zh {
  font-size: 13.5px;
  color: var(--color-text-soft);
  margin: 4px 0 12px;
}

.analysis-row {
  display: flex;
  gap: 8px;
  padding: 6px 0;
  border-top: 1px dashed var(--color-border);
  font-size: 13px;
  line-height: 1.55;
}

.analysis-row:first-of-type {
  border-top: none;
}

.analysis-label {
  flex-shrink: 0;
  width: 78px;
  color: var(--color-text-soft);
  font-weight: 600;
}

.analysis-value {
  flex: 1;
}

.shadow-split {
  font-size: 14px;
  color: #2f6656;
  background: var(--color-secondary-soft);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  line-height: 1.7;
  margin: 6px 0;
}

.sentence-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.mock-article-text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-secondary-soft);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
}

.txt-preview {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-text);
  background: #f8f4ec;
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  max-height: 160px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- AI 老师输出结构 ---------- */
.teacher-line {
  font-size: 16px;
  font-weight: 700;
  margin: 0;
}

.teacher-line-zh {
  font-size: 13px;
  color: var(--color-text-soft);
  margin: 4px 0 0;
}

.ai-output .card-title {
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.step-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

/* ---------- 场景角色扮演 ---------- */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 14px;
}

.scenario-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  text-align: center;
}

.scenario-card.scenario-active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.scenario-emoji {
  font-size: 24px;
}

.scenario-name {
  font-size: 13px;
  font-weight: 600;
}

.dialog-bubble {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  font-size: 13.5px;
  line-height: 1.55;
}

.dialog-bubble.role-teacher {
  background: var(--color-secondary-soft);
}

.dialog-bubble.role-user {
  background: var(--color-primary-soft);
}

.dialog-en {
  font-weight: 600;
}

.dialog-zh {
  color: var(--color-text-soft);
  font-size: 12px;
  margin-top: 2px;
}

/* ---------- 占位页（登录 / 订阅） ---------- */
.placeholder-card {
  text-align: center;
  padding: 32px 16px;
}

.placeholder-emoji {
  font-size: 36px;
  display: block;
  margin-bottom: 10px;
}

.about-card {
  background: var(--color-secondary-soft);
  border: none;
}

/* ---------- 普通列表 ---------- */
.plain-list, .plain-list-ordered {
  margin: 0;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---------- 底部导航：固定视口底缘，不随内容滚动、不遮挡正文 ---------- */
#bottom-nav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: 0;
  pointer-events: none;
}

.bottom-nav-inner {
  pointer-events: auto;
  max-width: var(--app-content-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  align-items: stretch;
  padding: 8px 4px calc(env(safe-area-inset-bottom, 0px) + 6px);
  width: 100%;
  box-sizing: border-box;
}

/* 桌面覆盖必须放在 fixed 规则之后，否则会被后面的 #bottom-nav 盖掉 */
@media (min-width: 768px) {
  #app {
    overflow: visible;
    min-height: 100vh;
    height: auto;
  }

  #app-header,
  .p8-update-banner {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
  }

  #bottom-nav {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    pointer-events: auto;
    width: 100%;
    max-width: none;
  }

  #bottom-nav .bottom-nav-inner {
    max-width: none;
  }

  #page-container {
    overflow: visible;
    flex: 1 0 auto;
    padding-bottom: 16px;
    height: auto;
    max-height: none;
  }
}

.nav-item {
  flex: 1;
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 4px 0;
  color: var(--color-text-soft);
  cursor: pointer;
}

.nav-icon {
  font-size: 20px;
  line-height: 1;
}

.nav-label {
  font-size: 11px;
  font-weight: 600;
}

.nav-item.nav-active {
  color: var(--color-primary-dark);
}

.btn-slow-read-playing {
  opacity: 0.85;
  pointer-events: none;
}

.btn-slow-read-playing::after {
  content: " · 播放中";
  font-size: 12px;
}

.nav-hidden {
  display: none !important;
}

.nav-item.nav-active .nav-icon {
  transform: translateY(-1px);
}

/* ---------- Toast 提示 ---------- */
.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(58, 51, 44, 0.92);
  color: #fff;
  font-size: 13px;
  padding: 10px 16px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 100;
  white-space: nowrap;
}

.toast.toast-show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- P0 产品壳 ---------- */
.entry-grid-7 {
  grid-template-columns: repeat(2, 1fr);
}

.tag-success {
  background: var(--color-secondary-soft);
  color: #2d6a5a;
}

.tag-warn {
  background: #fff3cd;
  color: #856404;
}

.chip-active {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
}

.catalog-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  border: none;
  background: var(--color-card);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow-card);
}

.catalog-row-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.catalog-row-main small {
  color: var(--color-text-soft);
  font-size: 12px;
}

.task-item-clickable {
  width: 100%;
  border: none;
  background: var(--color-card);
  cursor: pointer;
  text-align: left;
}

.banner-demo {
  border-left: 4px solid var(--color-primary);
}

.why-design {
  background: #faf6ef;
}

.empty-state {
  padding: 16px;
  text-align: center;
  color: var(--color-text-soft);
}

.error-state {
  color: var(--color-danger);
}

.error-hint {
  color: var(--color-danger);
}

.demo-module {
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}

.demo-module-label {
  font-size: 12px;
  color: var(--color-text-soft);
  display: block;
  margin-bottom: 4px;
}

.import-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.button-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 10px 0;
}

:root {
  --font-scale: 1;
}

html {
  font-size: calc(16px * var(--font-scale, 1));
}

.reduce-motion *,
.reduce-motion *::before,
.reduce-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

.high-contrast {
  --color-text: #111;
  --color-text-soft: #333;
  --color-border: #111;
}

.button-row-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.pagination-bar {
  margin: 10px 0;
}

.pagination-jump {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.pagination-jump .input-block {
  flex: 1;
  margin: 0;
}

.catalog-card {
  margin-bottom: 10px;
}

.tag-warn-inline {
  color: var(--color-warn, #b45309);
}

.p11-pause-main {
  margin-top: 12px;
  min-height: 48px;
  font-size: 1.05rem;
  font-weight: 600;
}

.p11-pause-glyph {
  font-size: 1.2rem;
  margin-right: 4px;
}

.vocab-word-row {
  margin-bottom: 8px;
}

@media (max-width: 360px) {
  .phone-frame,
  #page-container {
    max-width: 100%;
    overflow-x: hidden;
  }

  #app-header .header-badge {
    display: none;
  }

  .p8-update-banner {
    flex-wrap: wrap;
    gap: 6px;
  }
}

.p8-update-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: #e8f2ff;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  z-index: 25;
  position: sticky;
  top: 0;
}

.p8-update-text {
  flex: 1;
  min-width: 0;
}

.btn-link-inline {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-primary, #1a5fb4);
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
}

/* ========== P10A-R2：词书中心工具 + 背词会话响应式 ========== */
.p11-center-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0;
}

.p11-center-tools .input-block {
  margin: 0;
}

.p11-study-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.p11-study-left,
.p11-study-right {
  min-width: 0;
}

.p11-sense-list {
  margin: 0 0 8px;
  padding-left: 0;
  list-style: none;
}

.p11-sense-list li {
  margin: 0 0 6px;
  line-height: 1.55;
  font-size: 14px;
}

.p11-sense-idx {
  display: inline-block;
  min-width: 1.2em;
  color: var(--color-primary-dark);
  font-weight: 700;
}

.p10a-cockpit-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 10px 0;
}

@media (min-width: 700px) {
  .p10a-cockpit-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .p11-center-tools {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 横屏：左单词/音标/朗读/进度，右释义/判断 */
@media (orientation: landscape) and (max-height: 500px) {
  #app-header {
    padding-top: 8px;
    padding-bottom: 6px;
  }

  #page-container {
    padding-top: 8px;
    padding-bottom: var(--bottom-nav-space);
  }

  .p11-study-layout {
    grid-template-columns: minmax(240px, 0.42fr) minmax(280px, 0.58fr);
    align-items: start;
  }

  .p11-study-left .auto-word-text {
    font-size: 2rem;
  }

  .page-desc {
    display: none;
  }
}

@media (orientation: landscape) and (min-width: 800px) and (max-height: 480px) {
  .p11-study-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 430px) {
  .p11-center-tools {
    grid-template-columns: 1fr;
  }

  .p11-audio-actions,
  .p11-judge-actions {
    grid-template-columns: 1fr 1fr;
  }

  #page-container {
    overflow-x: hidden;
  }
}

/* 底栏在文档流时内层铺满工作区 */
#bottom-nav .bottom-nav-inner {
  max-width: none;
}

/* ========== F01 自动背单词：两页极简 ========== */
#scr-P11 .page-badge,
#scr-P11 .page-desc,
#scr-P11 .why-design,
#scr-P11 .p11-legacy-setup,
#scr-P11 .p11-playback-toolbar,
#scr-P11 .p11-voice-card,
#scr-P11 #p6a-plan-card,
#scr-P11 #p6a-session-hud,
#scr-P11 #p6a-learn-actions,
#scr-P11 #p6a-explain-panel {
  display: none !important;
}

/* F01 formal surface: no P-number chrome / SW update strip on this product page */
body[data-page="P11"] #header-release-badge,
body[data-page="P11"] #p8-update-banner,
html[data-nosw="1"] #p8-update-banner {
  display: none !important;
}

/* Ensure mode panels truly leave the document flow when hidden */
#scr-P11 #p11-center-panel[hidden],
#scr-P11 #p11-study-panel[hidden],
#scr-P11 .p11-legacy-setup[hidden],
#scr-P11 .p11-playback-toolbar[hidden],
#scr-P11 .p11-voice-card[hidden],
#scr-P11 #p6a-plan-card[hidden],
#scr-P11 #p6a-session-hud[hidden],
#scr-P11 #p6a-learn-actions[hidden],
#scr-P11 #p6a-explain-panel[hidden] {
  display: none !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
}

.f01-study-shell {
  min-height: 0;
}

.f01-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 8px 4px 24px;
}

.f01-start-hero {
  margin-bottom: 12px;
}

.f01-start-kicker {
  margin: 0 0 6px;
  font-family: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
  color: #143447;
}

.f01-book-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0;
}

.f01-book-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  text-align: left;
  border: 1px solid rgba(20, 52, 71, 0.14);
  background: linear-gradient(160deg, #f7fbfc 0%, #eef5f7 100%);
  border-radius: 14px;
  padding: 14px 12px;
  cursor: pointer;
  min-width: 0;
}

.f01-book-card:hover,
.f01-book-card:focus-visible {
  border-color: rgba(20, 52, 71, 0.35);
  outline: none;
}

.f01-book-active {
  border-color: #1f6f8b;
  box-shadow: inset 0 0 0 1px #1f6f8b;
}

.f01-book-title {
  font-weight: 700;
  color: #143447;
  font-size: 1rem;
}

.f01-start-tools {
  display: grid;
  gap: 12px;
  margin-top: 8px;
}

.f01-voice-row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.f01-start-actions {
  margin-top: 4px;
}

.f01-study-shell {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.f01-study-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.f01-study-card {
  text-align: center;
  padding: 8px 4px 0;
}

.f01-focus-word {
  font-family: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: clamp(2.6rem, 9vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #102a37 !important;
  opacity: 1 !important;
  visibility: visible !important;
  word-break: break-word;
}

.f01-focus-ipa {
  margin-top: 8px;
  font-size: 1.05rem;
  color: #4a6674;
}

.f01-focus-zh {
  margin-top: 14px;
  font-size: clamp(1.15rem, 3.6vw, 1.45rem);
  color: #1b3a4b;
  line-height: 1.45;
}

.f01-focus-meta {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.f01-visual {
  min-height: 2.2rem;
  margin: 8px 0 4px;
  text-align: center;
}

.f01-flow-hint {
  text-align: center;
  margin: 0;
}

.f01-study-actions {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.f01-actions-primary,
.f01-actions-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.f01-playback-mirror {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.f01-learn-area {
  position: relative;
}

#scr-P11 {
  overflow-x: hidden;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(70, 140, 160, 0.16), transparent 55%),
    radial-gradient(900px 420px at 100% 0%, rgba(214, 180, 120, 0.18), transparent 50%),
    #f4f8f9;
}

@media (max-width: 430px) {
  .f01-book-grid {
    grid-template-columns: 1fr;
  }
  .f01-focus-word {
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .f01-study-shell {
    min-height: auto;
  }
  .f01-focus-word {
    font-size: clamp(2rem, 6vw, 3rem);
  }
  .f01-focus-zh {
    margin-top: 8px;
    font-size: 1.05rem;
  }
  .f01-study-actions {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  .f01-actions-primary,
  .f01-actions-secondary {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1100px) {
  .f01-book-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}


/* === AV V1 single work interface === */
.av-work-root {
  position: relative;
  min-height: 100%;
}

.av-work-shell {
  max-width: 820px;
  margin: 0 auto;
  padding: 8px 8px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: calc(100vh - 120px);
}

.av-work-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.av-work-meta {
  min-width: 0;
}

.av-work-book {
  margin: 0;
  font-family: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: clamp(1.15rem, 2.8vw, 1.45rem);
  color: #143447;
  font-weight: 700;
}

.av-study-card {
  text-align: center;
  padding: 12px 8px 4px;
}

.av-focus-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.av-focus-empty .av-focus-word {
  opacity: 0.35;
}

.av-focus-word {
  font-family: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: clamp(2.6rem, 9vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #102a37 !important;
  word-break: break-word;
}

.av-focus-ipa {
  margin-top: 8px;
  font-size: 1.05rem;
  color: #4a6674;
}

.av-focus-zh {
  margin-top: 14px;
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  color: #1b3a4b;
  line-height: 1.45;
  max-width: 34em;
}

.av-focus-meta {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.av-learn-area {
  position: relative;
  flex: 1 1 auto;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.55), rgba(255,255,255,0.18));
  padding: 16px 12px;
}

.av-visual {
  min-height: 2.2rem;
  margin: 8px 0 4px;
  text-align: center;
}

.av-flow-hint {
  text-align: center;
  margin: 0;
}

.av-playback-mirror {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.av-study-actions {
  margin-top: auto;
  display: grid;
  gap: 10px;
}

.av-actions-primary,
.av-actions-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.av-setup-drawer {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.av-setup-drawer[hidden] {
  display: none !important;
}

.av-setup-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(16, 34, 48, 0.42);
  cursor: pointer;
}

.av-setup-sheet {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
  max-height: min(88vh, 760px);
  overflow: auto;
  background: linear-gradient(180deg, #f8fbfc 0%, #eef4f6 100%);
  border-radius: 20px 20px 0 0;
  box-shadow: 0 -12px 40px rgba(16, 34, 48, 0.18);
  padding: 16px 16px 28px;
}

.av-setup-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.av-setup-head h2 {
  margin: 0;
  font-size: 1.15rem;
  color: #143447;
}

.av-setup-dash {
  margin-bottom: 10px;
}

.av-book-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 10px 0 14px;
}

.av-book-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  text-align: left;
  border: 1px solid rgba(20, 52, 71, 0.14);
  background: linear-gradient(160deg, #f7fbfc 0%, #eef5f7 100%);
  border-radius: 14px;
  padding: 14px 12px;
  cursor: pointer;
  min-width: 0;
}

.av-book-card:hover,
.av-book-card:focus-visible {
  border-color: rgba(20, 52, 71, 0.35);
  outline: none;
}

.av-book-active {
  border-color: #1f6f8b;
  box-shadow: inset 0 0 0 1px #1f6f8b;
}

.av-book-title {
  font-weight: 700;
  color: #143447;
  font-size: 1rem;
}

.av-setup-tools {
  display: grid;
  gap: 12px;
}

.av-voice-row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.av-setup-actions {
  margin-top: 4px;
}

@media (min-width: 900px) {
  .av-setup-drawer {
    align-items: center;
  }
  .av-setup-sheet {
    border-radius: 18px;
    max-height: min(82vh, 720px);
  }
  .av-book-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .av-work-shell {
    padding-top: 16px;
  }
}

@media (max-width: 430px) {
  .av-book-grid {
    grid-template-columns: 1fr;
  }
  .av-focus-word {
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .av-work-shell {
    min-height: auto;
    gap: 8px;
    padding-bottom: 12px;
  }
  .av-focus-word {
    font-size: clamp(1.9rem, 6vw, 2.8rem);
  }
  .av-focus-zh {
    margin-top: 6px;
    font-size: 1.05rem;
  }
  .av-learn-area {
    min-height: 64px;
    padding: 8px;
  }
  .av-study-actions {
    grid-template-columns: 1fr 1fr;
  }
  .av-setup-sheet {
    max-height: 94vh;
    border-radius: 14px 14px 0 0;
  }
}

/* === AV Gate1b setup compact === */
.av-setup-sheet {
  display: flex;
  flex-direction: column;
  width: min(560px, 100%);
  max-height: min(72vh, 520px);
  overflow: hidden;
  padding: 0;
  border-radius: 18px 18px 0 0;
  background: #f7fafb;
}

.av-setup-head {
  flex: 0 0 auto;
  margin: 0;
  padding: 10px 12px 6px;
  border-bottom: 1px solid rgba(20, 52, 71, 0.08);
}

.av-setup-head h2 {
  font-size: 1.05rem;
}

.av-setup-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 8px 12px 6px;
  -webkit-overflow-scrolling: touch;
}

.av-setup-footer {
  flex: 0 0 auto;
  padding: 8px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(20, 52, 71, 0.1);
  background: rgba(247, 250, 251, 0.96);
}

.av-setup-dash {
  margin: 0;
}

.av-setup-section {
  margin-bottom: 10px;
}

.av-setup-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #4a6674;
  margin-bottom: 6px;
}

.av-setup-label-inline {
  font-size: 0.78rem;
  font-weight: 700;
  color: #4a6674;
  margin-right: 6px;
}

.av-setup-microhint {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: #6a8290;
  line-height: 1.35;
}

.av-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.av-chip {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-width: 4.6rem;
  padding: 7px 9px;
  border-radius: 10px;
  border: 1px solid rgba(20, 52, 71, 0.14);
  background: #fff;
  cursor: pointer;
  line-height: 1.15;
  font: inherit;
  color: inherit;
  text-align: left;
  appearance: none;
  -webkit-appearance: none;
}

.av-chip:focus-visible {
  outline: 2px solid #1f6f8b;
  outline-offset: 2px;
}

.av-chip-count {
  margin-top: 2px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #1f6f8b;
}

.av-chip-main {
  font-weight: 700;
  font-size: 0.92rem;
  color: #143447;
}

.av-chip-sub {
  font-size: 0.72rem;
  color: #6a8290;
  margin-top: 1px;
}

.av-chip-purpose {
  min-width: auto;
  padding: 7px 11px;
}

.av-chip-active {
  border-color: #1f6f8b;
  box-shadow: inset 0 0 0 1px #1f6f8b;
  background: #eef7fa;
}

.av-rec-card {
  margin: 8px 0 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: linear-gradient(160deg, #eef7fa 0%, #f4f8f9 100%);
  border: 1px solid rgba(31, 111, 139, 0.18);
}

.av-rec-kicker {
  font-size: 0.72rem;
  color: #4a6674;
  margin-bottom: 2px;
}

.av-rec-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #143447;
}

.av-rec-meta {
  margin-top: 3px;
  font-size: 0.82rem;
  color: #3d5a68;
}

.av-setup-inline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 8px;
}

.av-inline-field {
  margin: 0;
}

.av-manual-details {
  border: 1px solid rgba(20, 52, 71, 0.1);
  border-radius: 10px;
  background: #fff;
  padding: 0 10px;
  margin-bottom: 4px;
}

.av-manual-details > summary {
  cursor: pointer;
  list-style: none;
  padding: 9px 2px;
  font-size: 0.86rem;
  font-weight: 600;
  color: #1f6f8b;
}

.av-manual-details > summary::-webkit-details-marker {
  display: none;
}

.av-manual-body {
  padding: 0 0 10px;
  display: grid;
  gap: 8px;
}

.av-book-grid[hidden] {
  display: none !important;
}

.av-setup-tools {
  gap: 8px;
  margin-top: 0;
}

.av-setup-actions {
  margin: 0;
}

@media (min-width: 900px) {
  .av-setup-drawer {
    align-items: center;
  }
  .av-setup-sheet {
    border-radius: 16px;
    max-height: min(72vh, 540px);
  }
  .av-setup-inline {
    grid-template-columns: 140px 1fr;
    align-items: end;
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .av-setup-sheet {
    max-height: 94vh;
    border-radius: 12px 12px 0 0;
  }
  .av-chip {
    min-width: 3.8rem;
    padding: 5px 7px;
  }
  .av-rec-card {
    margin: 4px 0 6px;
    padding: 7px 10px;
  }
  .av-setup-section {
    margin-bottom: 6px;
  }
}

@media (max-width: 430px) {
  .av-chip {
    min-width: calc(33.33% - 4px);
    flex: 1 1 calc(33.33% - 4px);
  }
  .av-chip-purpose {
    min-width: auto;
    flex: 0 0 auto;
  }
}

/* gate1b mobile tighten */
@media (max-width: 430px) {
  .av-setup-sheet {
    max-height: min(70vh, 560px);
  }
  .av-chip {
    padding: 6px 7px;
  }
  .av-rec-card {
    margin: 6px 0 8px;
    padding: 8px 10px;
  }
  .av-setup-footer .btn {
    min-height: 42px;
  }
}