/* ==========================================================================
   Anki小工坊 · 旗舰级知识记忆工坊样式系统 (Editorial & Obsidian Studio)
   ========================================================================== */

/* ---------- 变量系统与主题 ---------- */
:root, [data-theme="light"] {
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-active: #e2e8f0;
  
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);
  --border-focus: #2563eb;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --primary: #1e293b;
  --primary-hover: #0f172a;
  --primary-text: #ffffff;
  
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --accent-border: #bfdbfe;
  
  --amber-soft: #fef3c7;
  --amber-text: #92400e;
  --amber-border: #fcd34d;
  
  --success: #10b981;
  --success-soft: #ecfdf5;
  --danger: #ef4444;
  --danger-soft: #fef2f2;
  
  --shadow-subtle: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 4px 12px -2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 12px 24px -4px rgba(0, 0, 0, 0.06);
  --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.05);
  
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;
}

[data-theme="dark"] {
  --bg-app: #09090b;
  --bg-surface: #141417;
  --bg-surface-elevated: #1c1c21;
  --bg-subtle: #222227;
  --bg-active: #2e2e36;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-focus: #3b82f6;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --primary: #f8fafc;
  --primary-hover: #ffffff;
  --primary-text: #0f172a;
  
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --accent-border: rgba(59, 130, 246, 0.28);
  
  --amber-soft: rgba(245, 158, 11, 0.12);
  --amber-text: #fbbf24;
  --amber-border: rgba(245, 158, 11, 0.3);
  
  --shadow-subtle: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.5), 0 4px 12px 0 rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.6), 0 16px 32px rgba(0, 0, 0, 0.4);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 顶栏 (Topbar) ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  /* brand 是 <a>（点 logo 回主页），要去掉链接自带的下划线与主题色 */
  text-decoration: none;
  color: inherit;
}
.brand:hover .brand-name { color: var(--accent, #E2231A); }

.brand-logo-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  display: block;
}

/* ===== 品牌字标（logo-wordmark.svg：符号 + 竖线 + 两行轮廓化文字）===== */
.brand-wordmark {
  height: 34px;
  width: auto;
  flex-shrink: 0;
  display: block;
}
/* ===== 暗色模式换浅色字标 =====
   字标主色是近黑 #1D1D20，深色顶栏上等于隐形。
   <picture>/<source media> 只认 prefers-color-scheme，认不了站点自己的
   data-theme（主题是 app.js 手动切的），所以只能走 CSS：两张图常驻，按属性切换。
   特异性要算准：下面 640px 那条「窄屏隐藏字标」必须带上同样的属性选择器，
   否则 (0,3,0) 会盖过它，窄屏反而漏出第二张图。 */
.brand-wordmark.theme-dark-only { display: none; }
[data-theme="dark"] .brand-wordmark.theme-light-only { display: none; }
[data-theme="dark"] .brand-wordmark.theme-dark-only { display: block; }
.brand-divider {
  width: 1px;
  height: 26px;
  background: var(--border-strong);
  flex-shrink: 0;
  margin: 0 2px;
}
@media (max-width: 900px) {
  .brand-wordmark { height: 30px; }
  /* 窄屏优先保产品名，字标里那行中文副题会挤，直接让整个字标退场 */
  .brand-divider { display: none; }
}
@media (max-width: 640px) {
  /* 第二条选择器要带上 [data-theme]，否则上面 (0,3,0) 的暗色显示规则会盖过它 */
  .brand-wordmark,
  [data-theme="dark"] .brand-wordmark.theme-dark-only { display: none; }
}

[data-theme="dark"] .brand-logo-wrap {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.brand-svg {
  width: 22px;
  height: 22px;
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-badge {
  font-size: 9px;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent);
  color: #ffffff;
  letter-spacing: 0.05em;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 主题切换 */
.theme-toggle {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

.moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: block; }
.theme-toggle svg { width: 18px; height: 18px; }

/* 算力指示胶囊 */
.tier-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-secondary);
}

.chip-spark {
  color: #f59e0b;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.btn-spark {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.chip-divider {
  width: 1px;
  height: 12px;
  background: var(--border-strong);
}

.chip-regen {
  color: var(--accent);
  font-weight: 500;
}

/* PRO 升级按钮 */
.btn-pro {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  border: none;
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.25);
  transition: all 0.2s ease;
}

.btn-pro:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.icon-arrow {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}

.btn-pro:hover .icon-arrow {
  transform: translateX(2px);
}

/* 兑换码入口按钮（顶栏常驻，低调但清晰） */
.btn-redeem {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-redeem:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* ---------- 主工作区布局 ---------- */
.workspace {
  display: grid;
  grid-template-columns: 430px 1fr;
  gap: 24px;
  max-width: 1480px;
  width: 100%;
  margin: 20px auto;
  padding: 0 24px;
  flex: 1;
  /* 两栏等高拉伸：右栏空状态才能撑满，不再出现「左栏翻下去好长、右边一片空」。
     左栏用 align-self:start 保持自身内容高度，生成卡片后右栏变高也不会把左栏拉长留白。 */
  align-items: stretch;
}

/* ---------- 左侧高聚合控制中枢 ---------- */
.control-hub {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-self: start;
}

.hub-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hub-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hub-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.input-tabs {
  display: flex;
  background: var(--bg-subtle);
  padding: 3px;
  border-radius: var(--r-md);
  gap: 2px;
}

.input-tab {
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.input-tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-subtle);
  font-weight: 600;
}

/* 样本推荐胶囊 */
.sample-pills {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.sample-label {
  font-size: 11px;
  color: var(--text-muted);
}

.sample-pill {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.sample-pill:hover {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}

/* 文本输入框与统计 */
.textarea-wrap {
  position: relative;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  background: var(--bg-app);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.textarea-wrap:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

textarea {
  width: 100%;
  min-height: 150px;
  max-height: 380px;
  padding: 14px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13.5px;
  line-height: 1.6;
  resize: vertical;
}

textarea:focus {
  outline: none;
}

.textarea-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  font-size: 11.5px;
  color: var(--text-muted);
}

.calc-indicator {
  color: var(--accent);
  font-weight: 500;
}

.clear-btn {
  background: transparent;
  border: none;
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
}
.clear-btn:hover { color: var(--danger); }

/* 拖拽上传 */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--r-lg);
  padding: 30px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-app);
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-icon {
  color: var(--text-muted);
  margin-bottom: 6px;
}

.drop-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.drop-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.parsed-file-card {
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--success-soft);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
}

.file-name { font-weight: 600; color: #065f46; }
.file-stat { margin-left: 8px; color: #047857; }
.file-remove {
  background: transparent;
  border: none;
  color: #dc2626;
  font-size: 11px;
  cursor: pointer;
}

/* 参数矩阵 */
.param-matrix {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.param-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.param-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.param-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.param-hint {
  font-size: 10.5px;
  color: var(--text-muted);
}

/* 药丸单选组 */
.pill-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.pill-group.micro {
  grid-template-columns: repeat(3, 1fr);
}

.pill-btn {
  padding: 8px 6px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-app);
  border-radius: var(--r-md);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: all 0.15s ease;
}

.pill-btn:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

.pill-btn.active {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  font-weight: 600;
}

.double-param {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 12px;
}

.sub-param {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.golden-rule-tip {
  font-size: 11.5px;
  color: var(--amber-text);
  background: var(--amber-soft);
  border: 1px solid var(--amber-border);
  border-radius: var(--r-md);
  padding: 10px 12px;
  line-height: 1.5;
}

/* 模板微缩选区 (Real Micro Preview Cards) */
.template-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

/* 模板随卡片类型过滤，数量不定：词汇卡只剩 1 套、填空卡 2 套。
   固定 3 列的话会留下半排空白，看着像没加载出来，
   所以按实际数量收列数（数量由 renderTemplateGrid 写进 data-count）。 */
.template-selector[data-count="1"] {
  grid-template-columns: 1fr;
}

.template-selector[data-count="2"] {
  grid-template-columns: repeat(2, 1fr);
}

/* 网格下方那行「已按 X 筛选 · N 套适配模板」 */
.tpl-filter-note {
  margin-top: 8px;
  font-size: 11px;
}

.tpl-item {
  border: 1px solid var(--border-subtle);
  background: var(--bg-app);
  border-radius: var(--r-md);
  padding: 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease;
  position: relative;
}

.tpl-item:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.tpl-item.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent);
}

/* 微型排版卡片小样 */
.micro-card-preview {
  height: 52px;
  background: var(--bg-surface);
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  padding: 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.micro-line {
  height: 4px;
  border-radius: 2px;
  background: var(--border-strong);
}
.micro-line.primary { background: var(--text-primary); width: 65%; }
.micro-line.accent { background: var(--accent); width: 45%; }
.micro-line.badge { background: #bfdbfe; height: 5px; width: 35%; border-radius: 999px; }
.micro-line.cloze-mark { background: #fef08a; border: 1px solid #facc15; width: 50%; height: 6px; }

/* ---------- 互动题型的微缩小样（模板选择器里的示意图） ---------- */
.ixp { justify-content: flex-start !important; gap: 5px; }
.ixp-row { display: flex; align-items: center; gap: 5px; }
.ixp-bar { height: 5px; border-radius: 3px; background: var(--border-strong); }
.ixp-bar.dark { background: var(--text-primary); height: 6px; }
.ixp-bar.accent { background: var(--accent); opacity: 0.5; }
.ixp-key {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  border: 1px solid var(--border-strong);
}
.ixp-key.on { background: var(--accent); border-color: var(--accent); }
.ixp-num {
  flex: 0 0 auto;
  width: 7px;
  font-size: 8px;
  line-height: 1;
  font-weight: 700;
  color: var(--text-muted);
}
.ixp-blank {
  flex: 0 0 auto;
  width: 30px;
  height: 8px;
  border-bottom: 2px solid var(--accent);
}
.ixp-cols { display: flex; gap: 6px; width: 100%; }
.ixp-cols > div { flex: 1 1 0; display: flex; flex-direction: column; gap: 5px; }

/* 卡片类型下方的互动题型说明（选到互动题型时才出现） */
.param-note {
  margin-top: 9px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}

.tpl-info {
  display: flex;
  flex-direction: column;
}

.tpl-name {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.tpl-tag {
  font-size: 9.5px;
  color: var(--text-muted);
}

/* 主生成按钮 */
.action-footer {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.generate-main-btn {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #ffffff;
  border: none;
  border-radius: var(--r-lg);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.2);
  transition: all 0.2s ease;
}

[data-theme="dark"] .generate-main-btn {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.generate-main-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.generate-main-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* 全屏生成沉浸蒙层与加载态 */
.loading-state {
  padding: 12px 14px;
  background: var(--bg-subtle);
  border-radius: var(--r-md);
}

.gen-fullscreen-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(15, 23, 42, 0.76);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: genFadeIn 0.3s ease forwards;
}

[data-theme="light"] .gen-fullscreen-overlay {
  background: rgba(248, 250, 252, 0.85);
}

.gen-fullscreen-modal {
  width: 100%;
  max-width: 480px;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  padding: 38px 34px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: genScaleUp 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 核心卡片动态光环 */
.gen-anim-core {
  position: relative;
  width: 110px;
  height: 100px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gen-anim-orbit {
  position: absolute;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  border: 2px dashed var(--accent-border);
  animation: genOrbit 10s linear infinite;
}

.gen-anim-card-glow {
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--accent-soft);
  filter: blur(16px);
  animation: genGlowPulse 2.4s ease-in-out infinite alternate;
}

.gen-anim-cards {
  position: relative;
  width: 54px;
  height: 68px;
}

.gen-anim-card {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  border: 1.5px solid var(--border-strong);
  background: var(--bg-surface-elevated);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.gen-anim-card.c1 {
  transform: rotate(-10deg) translateY(2px);
  opacity: 0.6;
  border-color: var(--border-subtle);
  animation: genCardFloat1 3.2s ease-in-out infinite alternate;
}

.gen-anim-card.c2 {
  transform: rotate(8deg) translateY(-2px);
  opacity: 0.8;
  border-color: var(--accent-border);
  animation: genCardFloat2 3.2s ease-in-out infinite alternate 0.5s;
}

.gen-anim-card.c3 {
  transform: rotate(0deg);
  background: linear-gradient(135deg, var(--bg-surface), var(--accent-soft));
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.22);
  animation: genCardFloat3 3.2s ease-in-out infinite alternate 1s;
}

@keyframes genOrbit {
  100% { transform: rotate(360deg); }
}

@keyframes genGlowPulse {
  0% { transform: scale(0.85); opacity: 0.5; }
  100% { transform: scale(1.4); opacity: 0.95; }
}

@keyframes genCardFloat1 {
  0% { transform: rotate(-10deg) translateY(2px); }
  100% { transform: rotate(-14deg) translateY(-4px); }
}

@keyframes genCardFloat2 {
  0% { transform: rotate(8deg) translateY(-2px); }
  100% { transform: rotate(12deg) translateY(3px); }
}

@keyframes genCardFloat3 {
  0% { transform: rotate(0deg) translateY(0); }
  100% { transform: rotate(-3deg) translateY(-3px) scale(1.02); }
}

@keyframes genFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes genScaleUp {
  from { opacity: 0; transform: scale(0.92) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ==========================================================================
   生成进度条
   --------------------------------------------------------------------------
   为什么由「转圈」改成「横向进度条」：
     转圈动画只传达「在转」，用户读到的是「没有进度、很慢」。横向推进的
     进度条自带「有终点」的心理暗示，右侧百分比数字进一步给出确定感。

   为什么是「真实里程碑 + 锚点间渐进」而不是纯假动画：
     单次大模型调用是不可分割的黑盒，服务端给不出真实百分比。所以每个
     真实阶段（文档解析完成 / 开始生成 / 进入质检）对应一个锚点值，命中
     就跳过去——这部分是真的；锚点之间按渐近曲线缓慢爬升，永远在动，但
     绝不超过下一个锚点。这样同时避开了两种最伤信任的形态：「卡在 99%
     不动」和「提前跑满然后干等」。具体追击逻辑见 app.js 的 GEN_PROGRESS。
   ========================================================================== */
.gen-progress {
  display: flex;
  flex-direction: column;
  gap: 9px;
  width: 100%;
}

.gen-progress-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

/* 百分比数字：等宽数字（tabular-nums）避免位数变化时左右抖动 */
.gen-progress-pct {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.gen-progress-track {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: var(--bg-active);
  overflow: hidden;
}

.gen-progress-fill {
  position: relative;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  overflow: hidden;
  will-change: width;
}

/* 波浪纹理：来自用户提供的 loading-85 方案，按 10px 高度等比缩小。
   它不是装饰——进度条会在服务端处理阶段「宽度停住」，这层持续滚动的
   纹理负责传达「仍在工作」，避免用户把停顿误判成卡死。 */
.gen-progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  --c: rgba(255, 255, 255, 0.6) 92%, #0000;
  background:
    radial-gradient(circle 5px at bottom, var(--c)) 0 0,
    radial-gradient(circle 5px at top, var(--c)) 0 100%;
  background-size: calc(100% / 4) 50%;
  background-repeat: repeat-x;
  animation: loading-85 1.1s infinite linear;
}

@keyframes loading-85 {
  80%, 100% {
    background-position: calc(100% / 3) 0, calc(100% / -3) 100%;
  }
}

/* ==========================================================================
   loading-29 · 小型旋转指示器
   --------------------------------------------------------------------------
   用户提供的第二套方案。用在「单卡重修」这种按钮级的短操作上——
   那里放不下一条进度条，但同样需要「正在处理」的即时反馈。
   颜色改为主题变量以适配明暗模式。
   ========================================================================== */
.loading-29 {
  width: 14px;
  aspect-ratio: 0.577;
  color: var(--accent);
  display: grid;
  background:
    linear-gradient(currentColor 0 0) top / 100% 1px,
    linear-gradient(currentColor 0 0) bottom / 100% 1px,
    linear-gradient(to bottom right, #0000 calc(50% - 2px), currentColor calc(50% - 1px), #0000 50%) top / 100% calc(100% + 2px),
    linear-gradient(to bottom left, #0000 calc(50% - 2px), currentColor calc(50% - 1px), #0000 50%) top / 100% calc(100% + 2px);
  background-repeat: no-repeat;
  animation: loading-29 4s infinite linear;
  flex-shrink: 0;
}
.loading-29::before,
.loading-29::after {
  content: "";
  grid-area: 1 / 1;
  background: inherit;
  border: inherit;
  animation: inherit;
}
.loading-29::after {
  animation-duration: 2s;
}

@keyframes loading-29 {
  100% { transform: rotate(1turn); }
}

/* 尊重用户的「减少动效」系统偏好：动效不是功能，可关。 */
@media (prefers-reduced-motion: reduce) {
  .gen-progress-fill::after,
  .loading-29,
  .loading-29::before,
  .loading-29::after {
    animation: none;
  }
}

.loading-step {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.loading-sub {
  font-size: 10.5px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   右侧视窗：真实卡片工坊与沉浸视窗
   ========================================================================== */
.card-stage {
  min-height: 600px;
  display: flex;
  flex-direction: column;
}

/* 空状态活体展示展台 */
.showcase-empty-state {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  /* 撑满右栏（与左栏等高），内容垂直居中——视觉重量与左栏对齐 */
  flex: 1;
}

.showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 12px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.showcase-heading {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.showcase-sub {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* 活体演示卡片 */
.live-demo-card-wrap {
  width: 100%;
  max-width: 540px;
  perspective: 1200px;
  margin-bottom: 30px;
  cursor: pointer;
}

.live-card-inner {
  display: grid;
  grid-template-areas: "cardlayer";
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.live-card-inner.flipped {
  transform: rotateY(180deg);
}

.live-card-face {
  grid-area: cardlayer;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-hover);
  padding: 28px 24px;
  min-height: 320px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  text-align: left;
}

.live-card-face.back {
  transform: rotateY(180deg);
}

.card-tpl-tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.live-card-front-title {
  font-family: Newsreader, Georgia, serif;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.live-card-front-title.mini {
  font-size: 22px;
  margin-bottom: 4px;
}

.live-card-phonetic {
  font-family: Newsreader, Georgia, serif;
  font-size: 16px;
  font-style: italic;
  color: var(--text-muted);
  margin-top: 4px;
  margin-bottom: 20px;
}

.live-card-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 6px 10px;
  border-radius: var(--r-sm);
  align-self: flex-start;
}

.hint-key {
  font-weight: 700;
  color: var(--text-primary);
}

.live-card-pos-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.live-card-def {
  font-size: 14.5px;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.live-card-example {
  font-style: italic;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  font-size: 13px;
  margin-bottom: 16px;
}

.live-card-license {
  font-size: 10px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
  text-align: center;
}

/* ==========================================================================
   空状态演示卡 · 按卡片类型切换  ·  2026-09-23
   --------------------------------------------------------------------------
   样卡内容现在是数据驱动的（app.js 的 DEMO_CARDS + renderDemoCard）。
   原来那张写死的词汇卡在用户选「填空题」时依然演词汇，属于自打脸。
   ========================================================================== */
.demo-type-hint {
  font-size: 11.5px;
  color: var(--text-muted);
  margin: -18px 0 26px;
  line-height: 1.6;
  text-align: center;
  max-width: 540px;
}
.demo-type-hint b { color: var(--text-secondary); font-weight: 600; }

.live-card-kicker {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.live-card-front-title.qa-title {
  font-size: 21px;
  line-height: 1.5;
}

.live-card-back-title {
  font-family: Newsreader, Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.live-card-cloze {
  font-size: 19px;
  line-height: 1.85;
  color: var(--text-primary);
  margin-bottom: 18px;
  font-family: Newsreader, Georgia, serif;
}
.live-card-cloze u,
.demo-cloze-target {
  text-decoration: none;
  background: var(--accent-soft);
  color: var(--accent);
  border-bottom: 2px solid var(--accent);
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 600;
  cursor: pointer;
}

/* 演示卡里的互动区比真实卡片区更矮，收一点字号避免把空状态撑太长 */
.live-card-face .ix-root { margin: 0; }
.live-card-face .ix-q { font-size: 15px; line-height: 1.6; }
.live-card-face .ix-sent { font-size: 16px; line-height: 1.9; }

.showcase-features-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
}

.feat-item {
  background: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 16px;
  text-align: left;
}

.feat-icon {
  color: var(--accent);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
}

.feat-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.feat-desc {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   卡片工作台 (Workshop Toolbar & Modes)
   ========================================================================== */
.workshop-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.workshop-toolbar {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-subtle);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.deck-meta-block {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.deck-name-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 2px;
}

.icon-edit-deck {
  color: var(--text-muted);
}

.deck-name-input {
  font-size: 14px;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text-primary);
  outline: none;
  width: 140px;
}

.deck-stat-pills {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-pill {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-subtle);
  color: var(--text-secondary);
}

.meta-pill.quality-ok {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 视图切换器 */
.view-switcher {
  display: flex;
  background: var(--bg-subtle);
  padding: 3px;
  border-radius: var(--r-md);
  gap: 2px;
}

.view-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-subtle);
  font-weight: 600;
}

.tool-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  border-radius: var(--r-md);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.tool-action-btn:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

.tool-action-btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  font-weight: 600;
}

.tool-action-btn.primary:hover {
  filter: brightness(1.08);
}

/* ==========================================================================
   卡片流模式 (Stream Grid & CSS Grid Overlap Architecture)
   ========================================================================== */
.card-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 单张卡片外容器 */
.card-item {
  position: relative;
  perspective: 1200px;
  border-radius: var(--r-lg);
  transition: transform 0.2s ease;
}

/* 核心防穿模技术：CSS Grid 双面共享最大内容高度 */
.card-inner {
  display: grid;
  grid-template-areas: "cardlayer";
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
  width: 100%;
}

.card-inner.flipped {
  transform: rotateY(180deg);
}

.card-face {
  grid-area: cardlayer;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  padding: 22px 24px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
  overflow-wrap: break-word;
  word-break: break-word;
}

.card-face:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-strong);
}

.card-face.back {
  transform: rotateY(180deg);
  background: var(--bg-surface-elevated);
}

/* 卡片操作悬浮条 */
.card-action-bar {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 10;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.card-item:hover .card-action-bar {
  opacity: 1;
}

.card-act-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.card-act-btn:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

.card-act-btn.danger:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ---------- 真实模板排版细节注入 ---------- */
/* 现代简约风 (Modern QA) */
.tpl-modern .face-kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.tpl-modern .front-text {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.6;
}

.tpl-modern .back-text {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.7;
}

.tpl-modern .card-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 12px 0;
}

/* 学术雅致风 (Elegant Vocab) */
.tpl-vocab .vocab-word {
  font-family: Newsreader, Georgia, serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.tpl-vocab .vocab-phonetic {
  font-family: Newsreader, Georgia, serif;
  font-size: 15px;
  font-style: italic;
  color: var(--text-muted);
  margin: 4px 0 12px;
}

.tpl-vocab .vocab-pos-badge {
  align-self: flex-start;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 1px 10px;
  margin-bottom: 8px;
}

.tpl-vocab .vocab-def {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
}

.tpl-vocab .vocab-example {
  font-style: italic;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding-left: 12px;
  font-size: 13px;
  margin-top: 10px;
}

/* 词典权威性徽标：ECDICT 词库校对 */
.dict-verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11px;
  font-weight: 600;
  color: #1a7f4f;
  background: #e8f7ef;
  border: 1px solid #bfe6d0;
  border-radius: 999px;
  padding: 3px 10px;
}
.dict-verified-badge .dict-badge-ico {
  font-size: 13px;
  line-height: 1;
}

/* ==========================================================================
   词典条目块（ECDICT）
   --------------------------------------------------------------------------
   ⚠️ 这套类名与 app/templates_repo.py 的 _BASE_CSS 里那段是**同一套**。
   后端 app/dictionary.py 的 render_entry_html 只渲染一次 HTML，两边各自
   提供样式。改这里时务必同步改 _BASE_CSS，否则会出现「站内预览好看、
   导出到 Anki 变样」的漂移——这是本功能最容易踩的坑。
   ========================================================================== */
.dict-entry {
  margin-top: 16px;
  padding: 15px 17px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  font-size: 14px;
  line-height: 1.62;
  text-align: left;
}

.de-head {
  margin-bottom: 10px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--border-subtle);
}
.de-source {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.de-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.de-star {
  color: #d99a1f;
  letter-spacing: 1.5px;
  font-size: 13px;
}
[data-theme="dark"] .de-star { color: #e8b44a; }

.de-oxford {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 1px 9px;
}

.de-senses,
.de-defs {
  margin: 0;
  padding: 0;
  list-style: none;
}

.de-sense {
  display: flex;
  gap: 9px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--border-subtle);
}
.de-sense:last-child { border-bottom: none; }

.de-pos {
  flex-shrink: 0;
  /* 38px 而非 32px：规范化后会出现 adj./adv./prep. 这类 4~5 字符词性，
     窄了会换行、把义项推歪。 */
  min-width: 38px;
  padding-top: 2px;
  font-size: 11px;
  font-weight: 600;
  font-style: italic;
  color: var(--accent);
}
.de-zh { flex: 1; color: var(--text-primary); }

.de-section { margin-top: 14px; }
.de-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 7px;
}

.de-def {
  display: flex;
  gap: 7px;
  padding: 3px 0;
  font-size: 13px;
  color: var(--text-secondary);
}
.de-pos-en { color: var(--text-muted); }

.de-forms {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.de-form {
  font-size: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  padding: 3px 9px;
  color: var(--text-primary);
}
.de-form i {
  font-style: normal;
  font-size: 10.5px;
  color: var(--text-muted);
  margin-right: 5px;
}

.de-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}
.de-tag {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 1px 9px;
}

.de-freq {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  font-size: 10.5px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* 荧光高亮填空风 (Cloze Highlight) */
.tpl-cloze .cloze-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-primary);
}

.cloze-mask {
  display: inline-block;
  background: #fde68a;
  border: 1px dashed #d97706;
  color: transparent;
  padding: 0 8px;
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

[data-theme="dark"] .cloze-mask {
  background: rgba(245, 158, 11, 0.25);
  border-color: #f59e0b;
}

.cloze-mask.revealed {
  background: #fef08a;
  border-style: solid;
  color: #78350f;
}

[data-theme="dark"] .cloze-mask.revealed {
  background: rgba(245, 158, 11, 0.35);
  color: #fef3c7;
}

.tpl-license-footer {
  margin-top: 16px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
}

/* ============================================================================
   anki-prettify 预览（MIT · 上游 https://github.com/pranavdeshai/anki-prettify）
   ----------------------------------------------------------------------------
   🔴 为什么站内不复用导出的那份 CSS：
   上游样式表里有 `img{}` `table{}` `b{}` `a{}` `pre{}` 这类**全局元素选择器**，
   原样引进来会把整个站点的图片/表格/链接全部改样。
   所以这里用一套作用域限定在 .pf-* 的近似样式，只求「预览观感一致」；
   真正的排版以导出的 .apkg 为准 —— 那份是上游原文，一字未改。
   改这里时**不需要**同步改 app/prettify_themes.py（两者刻意解耦）。
   ============================================================================ */
.tpl-prettify .pf-shell {
  --pf-card-bg: #ffffff;
  --pf-fg: #333333;
  --pf-fg-faint: #333333cc;
  --pf-divider: #3333331a;
  --pf-cloze: #348ccb;
  --pf-tag-bg: #3333330f;
  --pf-page: #cfd6d8;
  background: var(--pf-page);
  border-radius: 6px;
  padding: 12px 10px;
  font-family: Inter, -apple-system, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}
/* 白色卡片本体 */
.tpl-prettify .pf-card {
  background: var(--pf-card-bg);
  border-radius: 4px;
  box-shadow: 0 7px 14px rgba(60, 66, 87, 0.06), 0 3px 6px rgba(60, 66, 87, 0.06);
  color: var(--pf-fg);
  word-wrap: break-word;
  overflow: hidden;
}
.tpl-prettify .pf-deck {
  padding: 12px 14px 0;
  color: var(--pf-fg-faint);
  font-size: 12px;
}
.tpl-prettify .pf-subdeck { text-decoration: underline; }
.tpl-prettify .pf-field {
  padding: 16px 14px;
  color: var(--pf-fg);
  font-size: 16px;
}
.tpl-prettify .pf-field--back {
  padding-top: 0;
  color: var(--pf-fg-faint);
  font-size: 14px;
}
.tpl-prettify .pf-divider {
  border: none;
  border-bottom: 1px dashed var(--pf-divider);
  margin: 0 14px 14px;
  height: 0;
}
.tpl-prettify .pf-cloze { color: var(--pf-cloze); }
/* 正面挖空遮罩：文字透明 + 虚线，点一下揭示（与 .cloze-mask 同一套交互语义，
   但配色跟随 prettify 的主题令牌，不用荧光黄） */
.tpl-prettify .pf-cloze--masked {
  color: transparent;
  border-bottom: 1.5px dashed var(--pf-cloze);
  padding: 0 6px;
  cursor: pointer;
  user-select: none;
  transition: color 0.15s ease;
}
.tpl-prettify .pf-cloze--masked.revealed {
  color: var(--pf-cloze);
  border-bottom-style: solid;
}
.tpl-prettify .pf-dict { padding: 0 14px 8px; }
.tpl-prettify .pf-tags {
  padding: 10px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tpl-prettify .pf-tag {
  background: var(--pf-tag-bg);
  border-radius: 3px;
  padding: 3px 6px;
  font-size: 12px;
  color: var(--pf-fg-faint);
}
.tpl-prettify .pf-foot {
  padding: 0 14px 12px;
  color: var(--pf-fg-faint);
  font-size: 10px;
  text-align: center;
  opacity: 0.85;
}
/* 卡片里的词典块沿用站内 .dict-entry 样式，但底色要跟着卡片走 */
.tpl-prettify .pf-dict .dict-entry {
  background: var(--pf-tag-bg);
  border-color: var(--pf-divider);
  color: var(--pf-fg);
}

/* 主题：Nord（冷灰蓝，永远浅色底） */
.tpl-prettify .pf-shell.pf-nord {
  --pf-page: #ececec;
  --pf-card-bg: #ffffff;
  --pf-fg: #434c5e;
  --pf-fg-faint: #4c566a;
  --pf-divider: #d8dee9;
  --pf-cloze: #88c0d0;
  --pf-tag-bg: #eceff4;
}

/* 主题：Dracula（上游是**纯暗色设计**，两种模式下都用暗色底） */
.tpl-prettify .pf-shell.pf-dracula {
  --pf-page: #1d1f27;
  --pf-card-bg: #282a36;
  --pf-fg: #f8f8f2;
  --pf-fg-faint: #6272a4;
  --pf-divider: #44475a;
  --pf-cloze: #8be9fd;
  --pf-tag-bg: #bd93f9;
}

/* 模板缩略图里的 prettify 变体 */
.micro-card-preview.pf-mini { background: linear-gradient(180deg, #cfd6d8 0%, #ffffff 42%, #ffffff 100%); }
.micro-card-preview.pf-nord { background: linear-gradient(180deg, #ececec 0%, #ffffff 42%, #ffffff 100%); }
.micro-card-preview.pf-dracula { background: linear-gradient(180deg, #1d1f27 0%, #282a36 42%, #282a36 100%); }
.micro-card-preview.pf-dracula .micro-line.primary { background: #f8f8f2; }
.micro-card-preview .micro-line.pf-ink { background: #4c566a; }
.micro-card-preview.pf-dracula .micro-line.pf-ink { background: #f8f8f2; }
.micro-card-preview .micro-line.pf-cloze-mark {
  background: transparent;
  border-bottom: 2px solid #8be9fd;
  border-radius: 0;
  width: 50%;
  height: 8px;
}

/* 编辑态 */
.card-edit-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-focus);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-hover);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-edit-box label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.card-edit-box textarea {
  min-height: 70px;
  font-size: 13.5px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  padding: 8px;
  background: var(--bg-app);
}

.edit-btn-row {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ==========================================================================
   沉浸背卡模式 (Focus Study Mode)
   ========================================================================== */
.study-stage-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 680px;
  margin: 0 auto;
}

.study-progress-bar {
  width: 100%;
  height: 4px;
  background: var(--bg-subtle);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}

.study-progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
}

.study-counter {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.study-card-viewport {
  width: 100%;
  perspective: 1200px;
  margin-bottom: 20px;
  cursor: pointer;
}

.study-card-inner {
  display: grid;
  grid-template-areas: "studylayer";
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  min-height: 260px;
}

.study-card-inner.flipped {
  transform: rotateY(180deg);
}

.study-card-face {
  grid-area: studylayer;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-hover);
  padding: 36px 30px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-height: calc(100vh - 290px);
  max-height: calc(100dvh - 290px);
  overflow-y: auto;
  overscroll-behavior: contain;
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 沉浸背卡轻量精致滚动条（长卡片卡内平滑下滑，保证打分按钮不被顶出视窗） */
.study-card-face::-webkit-scrollbar {
  width: 5px;
}
.study-card-face::-webkit-scrollbar-track {
  background: transparent;
}
.study-card-face::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}
.study-card-face::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.study-card-face.back {
  transform: rotateY(180deg);
}

.study-keyboard-guide {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

kbd {
  display: inline-block;
  padding: 2px 6px;
  font-size: 10px;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  box-shadow: 0 1px 0 var(--border-strong);
}

.anki-grading-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
}

.grade-btn {
  padding: 10px 6px;
  border-radius: var(--r-md);
  font-size: 12px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: all 0.15s ease;
}

.grade-btn .k-hint {
  font-size: 10px;
  opacity: 0.6;
}

.grade-btn.again { background: #fee2e2; color: #991b1b; border-color: #fecaca; }
.grade-btn.hard { background: #fef3c7; color: #92400e; border-color: #fde68a; }
.grade-btn.good { background: #dbeafe; color: #1e40af; border-color: #bfdbfe; }
.grade-btn.easy { background: #dcfce7; color: #166534; border-color: #bbf7d0; }

[data-theme="dark"] .grade-btn.again { background: rgba(239, 68, 68, 0.2); color: #fca5a5; }
[data-theme="dark"] .grade-btn.hard { background: rgba(245, 158, 11, 0.2); color: #fde68a; }
[data-theme="dark"] .grade-btn.good { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
[data-theme="dark"] .grade-btn.easy { background: rgba(16, 185, 129, 0.2); color: #86efac; }

.grade-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

/* ==========================================================================
   弹窗体系 (Pricing Modal & Export Modal)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  /* flex 中心对齐 + 超出视口的子元素 = 顶部被裁掉且滚不到（经典 flex 溢出坑）。
     改成用 margin: auto 做居中（见下方 .modal-box），overlay 自身开滚动：
     内容矮时居中，内容高时从顶部开始并可整屏滚动。 */
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-modal);
  padding: 32px;
  width: 100%;
  max-width: 500px;
  /* 弹窗必须能在视口内滚动。
     曾经的坑：只有 max-width，没有 max-height / overflow —— 内容一高就直接
     顶出视口上下两侧，而 overlay 是 flex 居中的，溢出部分既看不到也滚不到，
     用户只能看到中间一条。定价弹窗（3 卡 + footer + 7 条 FAQ）就是这样挂掉的。 */
  max-height: calc(100vh - 40px);
  max-height: calc(100dvh - 40px); /* 移动端地址栏收缩时 dvh 更准 */
  overflow-y: auto;
  overscroll-behavior: contain; /* 滚到底不要把父页面一起滚走 */
  /* margin:auto 配 flex 容器：矮内容居中，高内容也不会被裁掉顶部 */
  margin: auto;
  position: relative;
}

.pricing-modal-box {
  max-width: 860px;
  /* 定价弹窗比常规弹窗更宽更内容多，纵向留一点呼吸感即可（继承上面的滚动保护） */
  padding: 28px 32px 24px;
}

.modal-close-icon {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 16px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}
.modal-close-icon:hover { color: var(--text-primary); }

.modal-head.text-center { text-align: center; }
.modal-kicker {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 6px;
}
.modal-head h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}
.modal-head p {
  font-size: 13px;
  color: var(--text-muted);
}

/* 定价卡片三列 */
.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0 20px;
}

.pricing-card {
  border: 1px solid var(--border-subtle);
  background: var(--bg-app);
  border-radius: var(--r-lg);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--accent);
  background: var(--bg-surface);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.15);
}

.pricing-badge {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.pricing-badge.hot {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  border: none;
}

.pricing-tier-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.pricing-price .period {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-caption {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.pricing-feat-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 22px;
  flex: 1;
}

.pricing-feat-list li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.pricing-feat-list .check {
  color: var(--accent);
  font-weight: 800;
}

.pricing-btn {
  padding: 10px;
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.pricing-btn.featured-btn {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.pricing-btn.highlight-btn {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

.pricing-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.06);
}

.pricing-footer-note {
  text-align: center;
  font-size: 11.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* 导出引导 Tabs */
.modal-success-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--success);
  background: var(--success-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.guide-tabs {
  display: flex;
  background: var(--bg-subtle);
  padding: 4px;
  border-radius: var(--r-md);
  gap: 4px;
  margin: 18px 0 14px;
}

.guide-tab {
  flex: 1;
  padding: 6px 8px;
  font-size: 12px;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.guide-tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: var(--shadow-subtle);
}

.guide-content {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-secondary);
  background: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 16px;
  margin-bottom: 20px;
  min-height: 110px;
}

.modal-actions {
  display: flex;
  gap: 10px;
}

.primary-btn {
  padding: 10px 16px;
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: var(--r-md);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.primary-btn:hover { filter: brightness(1.08); }

.ghost-btn {
  padding: 10px 16px;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}
.ghost-btn:hover { background: var(--bg-active); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .workspace { grid-template-columns: 1fr; }
  .control-hub { max-width: 720px; margin: 0 auto; width: 100%; }
}

/* ==========================================================================
   登录弹窗（邮箱验证码 + 防机器验证码）
   ========================================================================== */
.btn-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  max-width: 220px;
}
.btn-login:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-login span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.login-modal-box { max-width: 400px; width: 92%; }

.login-form { display: flex; flex-direction: column; gap: 16px; margin-top: 18px; }

.login-field { display: flex; flex-direction: column; gap: 6px; }
.login-field label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
}
.login-label-sub { font-weight: 400; color: var(--text-muted); }

.login-field input {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  box-sizing: border-box;
}
.login-field input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.captcha-row { display: flex; align-items: center; gap: 8px; }
.captcha-img {
  flex: 1;
  height: 52px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  overflow: hidden;
  cursor: pointer;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
}
.captcha-img svg { width: 100%; height: 100%; }
.captcha-img .captcha-loading { font-size: 12px; color: var(--text-muted); }
.captcha-refresh {
  width: 42px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  cursor: pointer;
}
.captcha-refresh:hover { color: var(--accent); border-color: var(--accent-soft); }

.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; letter-spacing: 3px; }
.code-row .ghost-btn { white-space: nowrap; }

.login-error {
  padding: 10px 12px;
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: var(--r-md);
  font-size: 13px;
}

.login-submit { width: 100%; padding: 12px; font-size: 14px; }

.text-center { text-align: center; }

/* ==========================================================================
   Toast 轻提示 + 优雅确认框 + 头像菜单
   ========================================================================== */
#toast-container {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--r-md);
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-modal);
  font-size: 13.5px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.hide { opacity: 0; transform: translateY(-8px); }
.toast-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}
.toast-success .toast-icon { background: var(--success-soft); color: var(--success); }
.toast-error .toast-icon { background: var(--danger-soft); color: var(--danger); }
.toast-info .toast-icon { background: var(--accent-soft); color: var(--accent); }

.confirm-modal-box { max-width: 400px; width: 92%; }
.confirm-modal-box .modal-head p { color: var(--text-secondary); font-size: 14px; margin-top: 6px; }

.danger-btn { background: var(--danger) !important; }

.rename-modal-box { max-width: 360px; width: 92%; }

/* 头像按钮 */
.btn-login { position: relative; }
.avatar-circle {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.avatar-circle.avatar-vip {
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px #f59e0b, 0 0 0 5px #fbbf24;
  background: linear-gradient(135deg, #f59e0b, #f97316);
}
.avatar-caret { opacity: 0.6; }

/* 头像下拉菜单 */
.avatar-menu {
  position: fixed;
  z-index: 9990;
  width: 280px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  animation: menuIn 0.16s ease;
}
@keyframes menuIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.avatar-menu-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-subtle);
}
.avatar-menu-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.avatar-menu-name { font-size: 15px; font-weight: 700; color: var(--text-primary); }
.avatar-menu-email { font-size: 12px; color: var(--text-muted); margin-top: 3px; word-break: break-all; }
.vip-tag {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #fff;
}
/* 普通用户 / 已过期：金色渐变必须撤掉。
   会员过期后还挂着金色 VIP 徽章，是最容易让用户觉得被坑的展示 bug。 */
.vip-tag.none {
  background: var(--bg-subtle, #f3f4f6);
  color: var(--text-muted);
  font-weight: 600;
}
.vip-tag.expired {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}
/* 下拉菜单里的会员有效期行 */
.avatar-menu-vip {
  margin-top: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--bg-subtle, #f8f9fb);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.avatar-menu-vip b { color: var(--accent, #E2231A); font-weight: 700; }
.avatar-menu-vip.expired { background: #fef2f2; color: #b91c1c; }
.avatar-menu-vip .vip-renew {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid #fecaca;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
.avatar-menu-quota { padding: 14px 18px; border-bottom: 1px solid var(--border-subtle); }
.quota-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.quota-bar-label b { color: var(--accent); font-size: 14px; }
.quota-bar {
  height: 8px;
  background: var(--bg-subtle);
  border-radius: 999px;
  overflow: hidden;
}
.quota-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #38bdf8);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.avatar-menu-items { padding: 6px; }
.avatar-menu-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 10px 12px;
  border: none;
  background: none;
  border-radius: var(--r-md);
  font-size: 13.5px;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: background 0.12s ease;
}
.avatar-menu-item:hover { background: var(--bg-subtle); }
.avatar-menu-item.danger { color: var(--danger); }
.avatar-menu-item.danger:hover { background: var(--danger-soft); }


/* ============ 支付引导弹窗（面包多） ============ */
.pay-guide-box { max-width: 400px; }
.pay-guide-body { padding: 4px 4px 12px; }
.pay-guide-hint {
  font-size: 13.5px;
  color: var(--text-primary);
  line-height: 1.7;
  background: var(--bg-subtle);
  border-radius: var(--r-md);
  padding: 14px 16px;
}
.pay-guide-sub { color: var(--text-muted); font-size: 12.5px; }
.pay-guide-status {
  margin-top: 14px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding: 10px;
  border-radius: var(--r-md);
  background: var(--bg-subtle);
}
.pay-guide-status.warn { color: #b45309; background: #fffbeb; }
.pay-guide-close {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 8px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
}
.pay-guide-close:hover { color: var(--text-primary); }

/* 手动确认通道（面包多订单号认领）—— 自动查单失败时的终极兜底 */
.pay-guide-manual {
  margin-top: 12px;
  border: 1px solid var(--border-subtle, rgba(0,0,0,.1));
  border-radius: var(--r-md);
  padding: 10px 12px;
  background: var(--bg-subtle);
}
.pay-guide-manual > summary {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
  list-style: none;
  padding: 2px 0;
}
.pay-guide-manual > summary::-webkit-details-marker { display: none; }
.pay-guide-manual > summary::before {
  content: "▸ ";
  color: var(--text-muted);
}
.pay-guide-manual[open] > summary::before { content: "▾ "; }
.pay-guide-manual b { font-weight: 500; color: var(--text-primary); }
.pay-guide-input {
  width: 100%;
  box-sizing: border-box;
  padding: 9px 11px;
  border: 1px solid var(--border-subtle, rgba(0,0,0,.15));
  border-radius: var(--r-sm, 6px);
  font-size: 12.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--bg-primary, #fff);
  color: var(--text-primary);
}
.pay-guide-input:focus {
  outline: none;
  border-color: var(--accent, #2563eb);
}

/* ---------- 2026-09-22 新增：教程态 / 认领态 两个界面 ---------- */

.pay-guide-box { max-width: 440px; }

/* 教程态：第三方支付提示条 */
.pay-warn-strip {
  font-size: 12.5px;
  line-height: 1.6;
  color: #92400e;
  background: #fef3c7;
  border-left: 3px solid #f59e0b;
  border-radius: var(--r-sm, 6px);
  padding: 10px 12px;
  margin-bottom: 14px;
}

/* 教程态：三步步骤列表 */
.pay-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}
.pay-steps > li {
  display: flex;
  gap: 11px;
  padding: 0 0 16px;
  position: relative;
}
/* 步骤之间的连接竖线 */
.pay-steps > li:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 26px;
  bottom: 2px;
  width: 1px;
  background: var(--border-subtle, rgba(0,0,0,.12));
}
.pay-step-no {
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--accent, #2563eb);
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.pay-step-txt { flex: 1; min-width: 0; }
.pay-step-txt > b {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 2px;
}
.pay-step-txt > span {
  display: block;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 订单号示例（等宽字体，让用户知道要找什么形状） */
.pay-oid-demo {
  display: block;
  margin: 7px 0 0;
  padding: 7px 10px;
  background: var(--bg-subtle, #f3f4f6);
  border: 1px dashed var(--border-subtle, rgba(0,0,0,.15));
  border-radius: var(--r-sm, 6px);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11.5px;
  color: var(--text-primary);
  word-break: break-all;
  letter-spacing: .2px;
}

/* 订单号位置示意图（2026-09-22 已换成真实截图，不再是占位框） */
.pay-shot-slot {
  margin-top: 10px;
  padding: 0;
  border: 1px solid var(--border-subtle, rgba(0,0,0,.12));
  border-radius: var(--r-sm, 6px);
  background: #fff;
  overflow: hidden;
  text-align: center;
}
.pay-shot-img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--border-subtle, rgba(0,0,0,.08));
  cursor: zoom-in;
}

/* 图片放大查看浮层（支付教程的整页截图，弹窗里太小） */
.img-zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, .82);
  padding: 24px;
  cursor: zoom-out;
}
.img-zoom-inner {
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.img-zoom-img {
  max-width: 100%;
  max-height: calc(100vh - 90px);
  width: auto;
  height: auto;
  border-radius: var(--r-md, 8px);
  background: #fff;
  box-shadow: 0 12px 48px rgba(0, 0, 0, .5);
  cursor: default;
}
.img-zoom-hint {
  font-size: 12px;
  color: rgba(255, 255, 255, .72);
}
.pay-shot-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
}
.pay-shot-hint {
  display: block;
  padding: 8px 12px;
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

.pay-guide-tip {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.65;
  background: var(--bg-subtle, #f9fafb);
  border-radius: var(--r-md);
  padding: 10px 12px;
}

/* 认领态：状态卡片 */
.pay-status-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 13px;
  margin-bottom: 16px;
  border-radius: var(--r-md);
  background: var(--bg-subtle, #f9fafb);
  border: 1px solid transparent;
}
.pay-status-dot {
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  background: #9ca3af;
}
.pay-status-card.busy .pay-status-dot {
  background: #2563eb;
  animation: payPulse 1.1s ease-in-out infinite;
}
.pay-status-card.warn { background: #fffbeb; border-color: #fde68a; }
.pay-status-card.warn .pay-status-dot { background: #f59e0b; }
.pay-status-card.ok { background: #ecfdf5; border-color: #a7f3d0; }
.pay-status-card.ok .pay-status-dot { background: #10b981; }
@keyframes payPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.8); }
}
.pay-status-text b {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
}
.pay-status-text span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 认领态：输入区 */
.pay-oid-label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 7px;
  line-height: 1.5;
}
.pay-oid-help {
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

.pay-guide-mini-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 12px;
}
.link-btn {
  border: none;
  background: none;
  padding: 2px 0;
  font-size: 12.5px;
  color: var(--accent, #2563eb);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(37, 99, 235, .35);
}
.link-btn:hover { text-decoration-color: currentColor; }
.link-btn:disabled { color: var(--text-muted); cursor: default; text-decoration: none; }

/* 认领态的输入框稍大一点，因为它是主操作 */
#pay-guide-oid {
  padding: 11px 13px;
  font-size: 13px;
}

/* ============ 充值记录弹窗 ============ */
.orders-modal-box { max-width: 480px; }
.orders-list {
  max-height: 340px;
  overflow-y: auto;
  margin: 4px 0 12px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
}
.orders-loading, .orders-empty {
  padding: 32px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}
.order-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.order-row:last-child { border-bottom: none; }
.order-main { display: flex; flex-direction: column; gap: 3px; }
.order-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.order-meta { font-size: 12px; color: var(--text-muted); }
.order-right { display: flex; flex-direction: column; align-items: flex-end; gap: 3px; }
.order-quota { font-size: 13.5px; font-weight: 600; color: var(--accent); }
.order-state { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; }
.order-state.paid { color: #047857; background: #ecfdf5; }
.order-state.pending { color: #b45309; background: #fffbeb; }
.order-state.refunded { color: #6b7280; background: #f3f4f6; }

/* ---------- 邀请好友弹窗 ---------- */
.invite-modal-box { max-width: 440px; }
.invite-body { padding: 4px 2px 2px; }
.invite-stats {
  display: flex; gap: 8px; margin: 4px 0 16px;
}
.invite-stat {
  flex: 1; text-align: center; padding: 12px 6px;
  background: var(--bg-subtle); border-radius: var(--r-md);
  border: 1px solid var(--border-subtle);
}
.invite-stat b { display: block; font-size: 20px; color: var(--accent); line-height: 1.2; }
.invite-stat span { font-size: 11.5px; color: var(--text-muted); }
.invite-link-label { font-size: 12.5px; color: var(--text-secondary); margin-bottom: 6px; }
.invite-link-row { display: flex; gap: 8px; }
.invite-link-input {
  flex: 1; min-width: 0; padding: 9px 12px; font-size: 12.5px;
  border: 1px solid var(--border-subtle); border-radius: var(--r-sm);
  background: var(--bg-subtle); color: var(--text-primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.invite-code-line {
  margin-top: 10px; font-size: 12.5px; color: var(--text-secondary);
}
.invite-code-line b { color: var(--accent); letter-spacing: 1px; }
.invite-hint { color: var(--text-muted); font-size: 11.5px; }
.invite-records { margin-top: 18px; }
.invite-records-title {
  font-size: 12px; color: var(--text-muted); margin-bottom: 8px;
  text-transform: uppercase; letter-spacing: 0.06em;
}
.invite-record-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 10px; font-size: 12.5px;
  border-bottom: 1px solid var(--border-subtle);
}
.invite-record-email { color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.invite-record-status { color: var(--text-muted); font-size: 11.5px; white-space: nowrap; margin-left: 10px; }
.invite-record-status.ok { color: #047857; }
.invite-empty {
  text-align: center; color: var(--text-muted); font-size: 12.5px; padding: 16px 0;
}

/* ========== 全局通知横幅（app.js loadAnnouncements 渲染） ========== */

/* ---------- 全局通知横幅 ---------- */
#ann-banner-host { position: sticky; top: 0; z-index: 900; }
.ann-banner {
  display: flex; align-items: flex-start; gap: 11px;
  padding: 11px 18px; font-size: 13.5px; line-height: 1.6;
  border-bottom: 1px solid transparent;
  animation: annIn .28s cubic-bezier(.2,.8,.3,1);
}
@keyframes annIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.ann-banner.ann-hide { opacity: 0; transform: translateY(-8px); transition: .2s; }
.ann-banner.ann-info{ background: #EFF6FF; border-bottom-color: #BFDBFE; color: #1E40AF; }
.ann-banner.ann-warning { background: #FFFBEB; border-bottom-color: #FDE68A; color: #92400E; }
.ann-banner.ann-success { background: #F0FDF4; border-bottom-color: #BBF7D0; color: #166534; }
.ann-icon {
  flex: 0 0 19px; width: 19px; height: 19px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; margin-top: 1px; color: #fff;
}
.ann-info .ann-icon{ background: #3B82F6; }
.ann-warning .ann-icon { background: #F59E0B; }
.ann-success .ann-icon { background: #22C55E; }
.ann-body { flex: 1; min-width: 0; }
.ann-title { font-weight: 700; margin-bottom: 2px; }
.ann-text { word-break: break-word; }
.ann-close {
  flex: 0 0 auto; border: none; background: none; cursor: pointer;
  font-size: 15px; line-height: 1; padding: 3px 5px; opacity: .5;
  color: inherit; border-radius: 5px; transition: .15s;
}
.ann-close:hover { opacity: 1; background: rgba(0,0,0,.07); }

/* ==========================================================================
   购买前必读（可展开 FAQ）+ 联系方式  ·  2026-09-22 新增
   ========================================================================== */

.pricing-faq {
  margin-top: 16px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  background: var(--bg-subtle);
  overflow: hidden;
  transition: border-color .16s, background .16s;
}
.faq-item[open] {
  background: var(--bg-primary, #fff);
  border-color: var(--border-strong, rgba(0,0,0,.16));
}

.faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
  user-select: none;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary:hover { color: var(--accent); }

.faq-q { flex: 1; min-width: 0; }

/* 展开指示箭头：用 CSS 画，避免不同平台 emoji 差异 */
.faq-caret {
  flex: 0 0 8px;
  width: 8px; height: 8px;
  border-right: 1.6px solid var(--text-muted);
  border-bottom: 1.6px solid var(--text-muted);
  transform: rotate(45deg);
  transition: transform .18s ease;
  margin-top: -3px;
}
.faq-item[open] .faq-caret {
  transform: rotate(-135deg);
  margin-top: 2px;
  border-color: var(--accent);
}

.faq-a {
  padding: 0 14px 13px;
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--text-secondary, var(--text-muted));
}
.faq-a > p { margin: 0 0 7px; }
.faq-a > p:last-child { margin-bottom: 0; }
.faq-a b { color: var(--text-primary); font-weight: 600; }

.faq-strong {
  color: var(--text-primary) !important;
  font-weight: 600;
}
.faq-note {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-subtle);
  border-left: 2px solid var(--border-strong, rgba(0,0,0,.14));
  padding: 7px 10px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  margin-top: 8px !important;
}
.faq-tag-good {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: #047857;
  background: #d1fae5;
  border-radius: 999px;
  padding: 1px 8px;
  margin-left: 2px;
}

/* ---------- 联系方式卡片 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  margin: 11px 0 2px;
}
@media (max-width: 480px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  background: var(--bg-primary, #fff);
  cursor: pointer;
  text-align: left;
  text-decoration: none;
  color: inherit;
  font-family: inherit;
  transition: border-color .16s, transform .16s, box-shadow .16s;
}
.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(0,0,0,.07);
}
.contact-ico {
  flex: 0 0 34px;
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--accent-soft, #eff6ff);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-txt { flex: 1; min-width: 0; }
.contact-txt b {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.contact-txt i {
  display: block;
  font-style: normal;
  font-size: 11.5px;
  color: var(--text-muted);
  word-break: break-all;
  line-height: 1.4;
}

/* ==========================================================================
   定价弹窗 · 响应式与溢出防护  ·  2026-09-23
   --------------------------------------------------------------------------
   背景：定价弹窗内容 = 3 张定价卡 + footer + 7 条 FAQ，实测在 900px 高的屏上
   远超视口。此前 .pricing-modal-box 只有 max-width、没有 max-height/overflow，
   配合 overlay 的 align-items:center，结果是**底部内容被切掉且滚不到**。
   现在的防护分三层：
     1) .modal-box 默认 max-height + overflow-y:auto（见上方规则，全局生效）
     2) .modal-overlay 自身 overflow-y:auto + 子元素 margin:auto（顶部不被裁）
     3) 下面的断点：窄屏把 3 列堆成单列，避免卡片被压成 ~100px 不可读
   ========================================================================== */

/* 中屏：三列开始有点挤，收窄内边距 */
@media (max-width: 900px) {
  .pricing-modal-box { padding: 24px 22px 20px; }
  .pricing-cards-grid { gap: 12px; margin: 22px 0 18px; }
  .pricing-card { padding: 20px 16px; }
  .pricing-price { font-size: 25px; }
}

/* 小屏：三列 → 单列。卡片竖排，每张占满宽度，可读性优先 */
@media (max-width: 720px) {
  .pricing-cards-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin: 18px 0 16px;
  }
  .pricing-card { padding: 18px 16px; }
  /* 单列时 badge 顶在卡片上沿容易和上一张重叠，改为内联显示 */
  .pricing-card.featured { padding-top: 22px; }
  .pricing-badge { top: -9px; }
  /* FAQ 展开后很长，单列时给答案一点内边距余量 */
  .faq-a { padding: 0 12px 12px; }
  .faq-item > summary { padding: 10px 12px; font-size: 12.5px; }
}

@media (max-width: 480px) {
  .modal-overlay { padding: 12px; }
  .pricing-modal-box { padding: 20px 15px 16px; }
  .modal-head h3 { font-size: 18px; }
  .pricing-price { font-size: 23px; }
  /* 极窄屏：定价按钮加大点击区，避免误触 */
  .pricing-btn { padding: 12px; }
}

/* ---------- 企业微信二维码弹窗 ---------- */
.wecom-modal-box { max-width: 340px; }

/* 兑换码弹窗 */
.redeem-modal-box { max-width: 400px; }
.redeem-form {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.redeem-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--text-primary);
  background: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  outline: none;
  transition: border-color 0.15s ease;
}
.redeem-input:focus {
  border-color: var(--accent);
}
.redeem-input::placeholder {
  letter-spacing: 0;
  color: var(--text-muted);
}
.redeem-error {
  font-size: 13px;
  color: #dc2626;
  text-align: center;
}
.redeem-submit {
  width: 100%;
  padding: 12px;
  font-size: 14px;
}

/* 2026-09-22：二维码图已换成 306x304 的正方形紧裁图（原先是一张竖长页面截图，
   二维码只占其中 28%x14%，小到几乎扫不出来）。既然图是正方形，
   就不再需要 max-height + overflow 那套给长图准备的滚动兜底了。 */
.wecom-qr-wrap {
  margin: 6px 0 14px;
  padding: 12px;
  border-radius: var(--r-md);
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  display: flex;
  justify-content: center;
}
.wecom-qr-img {
  display: block;
  /* 正方形二维码：定宽即可，不要拉伸到容器满宽 */
  width: 220px;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-sm);
  background: #fff;
  /* 二维码必须有留白才能被相机识别，加一圈白底内边距当静默区 */
  padding: 8px;
  box-sizing: border-box;
}

.wecom-tip {
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-muted);
  text-align: center;
  margin: 0;
}
.wecom-tip b { color: var(--text-primary); font-weight: 600; }
.wecom-tip a { color: var(--accent); text-decoration: none; }
.wecom-tip a:hover { text-decoration: underline; }

/* ==========================================================================
   移动端顶栏适配（2026-09-23）
   ==========================================================================
   问题：顶栏右侧那一排（主题 / 积分 / 登录 / 升级 / 兑换码）是 nowrap 的 flex，
   在 390px 视口下实测宽 404px —— 比视口还宽，把整个文档撑出 104px 横向滚动条。

   连锁反应比「顶栏难看」严重得多：文档一旦横向溢出，`position: fixed; inset: 0`
   的弹窗（登录 / 定价 / 兑换码 / 导出）宽度会跟着被撑到 scrollWidth（实测 494px），
   于是弹窗也跟着超出屏幕，右侧内容被切掉。**修顶栏等于同时修了四个弹窗。**

   策略：允许右侧这一组内部换行（flex-wrap），而不是把按钮藏起来——
   「升级畅学会员」是购买入口，移动端必须可达，不能为了省宽度把它 display:none。
   ========================================================================== */
@media (max-width: 640px) {
  .topbar {
    padding: 10px 12px;
    gap: 8px;
  }

  /* 品牌区可收缩，否则它会和右侧抢宽度把右侧顶出去 */
  .brand {
    flex: 0 1 auto;
    min-width: 0;
  }
  .brand-sub { display: none; }          /* 副标退场：省宽度也省一行高度 */
  .brand-name { font-size: 14px; }

  /* 关键：允许换行 + 可收缩，从结构上杜绝横向溢出 */
  .topbar-right {
    flex: 1 1 auto;
    min-width: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
    row-gap: 6px;
  }

  /* 窄屏的积分条只留「积分」这一件事，「重修次数」退场 */
  .tier-chip {
    padding: 5px 9px;
    font-size: 11px;
    gap: 5px;
  }
  .tier-chip .chip-divider,
  .tier-chip .chip-regen { display: none; }

  .theme-toggle { width: 32px; height: 32px; }

  .btn-login {
    padding: 7px 10px;
    font-size: 12px;
    max-width: 124px;
  }
  .btn-pro { padding: 7px 11px; font-size: 12px; }
  .btn-pro .icon-arrow { display: none; }
  .btn-redeem { padding: 7px 10px; font-size: 12px; }
}

/* 超窄屏（≤380px，如 iPhone SE）：再收一档内边距 */
@media (max-width: 380px) {
  .topbar { padding: 8px 10px; }
  .topbar-right { gap: 5px; row-gap: 5px; }
  .btn-login { max-width: 104px; }
  .btn-pro { padding: 6px 9px; }
  .btn-redeem { padding: 6px 8px; }
}

/* ==========================================================================
   页脚（工具页专用）
   --------------------------------------------------------------------------
   工具页顶栏被积分/登录/会员/兑换码塞满，放不下导航；而「去主页 / 找作者」
   又是真实需求。所以入口统一收在底部页脚。
   字标和顶栏一样要做明暗两版——主色是近黑，深色背景上等于隐形。
   ========================================================================== */
.site-foot {
  margin-top: 36px;
  padding: 28px 24px 20px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}
.foot-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: space-between;
}
.foot-mark { height: 30px; width: auto; display: block; }
.foot-mark.theme-dark-only { display: none; }
[data-theme="dark"] .foot-mark.theme-light-only { display: none; }
[data-theme="dark"] .foot-mark.theme-dark-only { display: block; }
.foot-tag { margin: 10px 0 0; font-size: 13px; color: var(--text-muted); }

.foot-nav { display: flex; flex-wrap: wrap; gap: 40px; }
.foot-col { display: flex; flex-direction: column; gap: 8px; min-width: 124px; }
.foot-col h4 {
  margin: 0 0 2px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.foot-col a,
.foot-link-btn {
  font-size: 13.5px;
  color: var(--text-secondary);
  text-decoration: none;
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.5;
}
.foot-col a:hover,
.foot-link-btn:hover { color: var(--accent); }
.foot-note { font-size: 12px; color: var(--text-muted); }

.foot-bottom {
  max-width: 1080px;
  margin: 24px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .site-foot { padding: 22px 16px 16px; }
  .foot-inner { gap: 22px; }
  .foot-nav { gap: 22px 28px; }
}

/* ============================================================
 * 首次访问引导（Onboarding）
 * ------------------------------------------------------------
 * 两个关键约束：
 *
 * 1. `.onb-mask` 必须 pointer-events:none。
 *    它是盖满全屏的蒙版，一旦能吃点击，下面的按钮就全废了，
 *    引导从「帮忙」变成「挡路」。只有说明卡片自己接收点击。
 *
 * 2. 聚光灯不用四块黑边拼，用 `box-shadow: 0 0 0 9999px` 一圈铺出去。
 *    四块拼法在滚动和缩放时会露出接缝，一圈铺出去则永远没有缝。
 * ============================================================ */

.onb-mask {
  position: fixed;
  inset: 0;
  z-index: 9000;
  pointer-events: none;          /* 见上文第 1 条：绝不能挡住页面操作 */
}

.onb-hole {
  position: fixed;
  border-radius: 14px;
  box-shadow: 0 0 0 9999px rgba(9, 14, 25, 0.62);
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 0;
  transition: left .22s ease, top .22s ease, width .22s ease, height .22s ease;
  pointer-events: none;
}

.onb-card {
  position: fixed;
  width: 360px;
  max-width: calc(100vw - 24px);
  background: var(--bg-surface-elevated, #fff);
  border: 1px solid var(--border-strong, rgba(15, 23, 42, .16));
  border-radius: 16px;
  padding: 18px 20px 16px;
  box-shadow: 0 12px 40px rgba(9, 14, 25, .28);
  pointer-events: auto;          /* 只有卡片接收点击 */
  font-size: 14px;
  line-height: 1.7;
}

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

.onb-step {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent, #2563eb);
}

.onb-x {
  border: 0;
  background: transparent;
  color: var(--text-muted, #94a3b8);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 6px;
}

.onb-x:hover { color: var(--text-primary, #0f172a); }

.onb-card h4 {
  margin: 0 0 6px;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--text-primary, #0f172a);
}

.onb-card p {
  margin: 0;
  font-size: 13.8px;
  color: var(--text-secondary, #475569);
}

.onb-card .onb-hint {
  margin-top: 8px;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--amber-soft, #fef3c7);
  color: var(--amber-text, #92400e);
  font-size: 12.8px;
}

.onb-dots {
  display: flex;
  gap: 6px;
  margin: 14px 0 12px;
}

.onb-dot {
  width: 18px;
  height: 4px;
  border-radius: 999px;
  background: var(--border-strong, rgba(15, 23, 42, .18));
}

.onb-dot.on { background: var(--accent, #2563eb); }

.onb-actions {
  display: flex;
  gap: 10px;
}

.onb-btn {
  flex: 1;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--border-strong, rgba(15, 23, 42, .16));
}

.onb-btn.ghost {
  background: var(--bg-surface, #fff);
  color: var(--text-secondary, #475569);
}

.onb-btn.primary {
  background: var(--accent, #2563eb);
  border-color: var(--accent, #2563eb);
  color: #fff;
  font-weight: 600;
}

.onb-btn[disabled] {
  opacity: .45;
  cursor: not-allowed;
}

.onb-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  gap: 10px;
}

.onb-chk {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.8px;
  color: var(--text-muted, #94a3b8);
  cursor: pointer;
  user-select: none;
}

.onb-chk input { margin: 0; cursor: pointer; }

.onb-link {
  font-size: 12.8px;
  color: var(--accent, #2563eb);
  white-space: nowrap;
}

/* 窄屏：不做贴元素摆放，卡片固定成底部抽屉 */
.onb-card.onb-sheet {
  left: 12px !important;
  right: 12px;
  bottom: 12px;
  top: auto !important;
  width: auto;
}

@media (max-width: 640px) {
  .onb-card { padding: 16px 16px 14px; }
  .onb-card h4 { font-size: 15.5px; }
  .onb-card p { font-size: 13.2px; }
}

/* ===================================================================
   遇到问题 ❓ 悬浮入口与反馈 / 视频演示组件
   =================================================================== */

/* 顶栏帮助按钮 */
.btn-topbar-help {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 11px;
  border-radius: var(--r-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-topbar-help:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* 展台演示视频胶囊按钮 */
.btn-watch-demo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-full);
  border: 1px solid var(--accent-border, rgba(37, 99, 235, 0.3));
  background: var(--accent-soft, rgba(37, 99, 235, 0.08));
  color: var(--accent, #2563eb);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.btn-watch-demo:hover {
  background: var(--accent, #2563eb);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px -2px rgba(37, 99, 235, 0.35);
}

/* 悬浮 FAB 容器 */
.help-fab-wrap {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 950;
}

.help-fab-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border-radius: var(--r-full);
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.12), 0 1px 3px rgba(15, 23, 42, 0.06);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}
.help-fab-btn:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.2), 0 2px 6px rgba(15, 23, 42, 0.08);
}
.help-fab-btn .fab-icon {
  font-size: 15px;
  display: inline-block;
}

/* 帮助弹出菜单 */
.help-popover {
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  width: 320px;
  max-width: calc(100vw - 32px);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  box-shadow: var(--shadow-modal);
  padding: 14px 14px 12px;
  animation: popoverFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes popoverFadeIn {
  from { opacity: 0; transform: translateY(8px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.help-popover-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 10px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 8px;
}
.help-popover-title {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-primary);
}
.help-popover-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 6px;
}
.help-popover-close:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.help-menu {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.help-menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: all 0.15s ease;
  width: 100%;
  box-sizing: border-box;
}
.help-menu-item:hover {
  background: var(--bg-subtle);
  border-color: var(--border-subtle);
}
.help-item-icon {
  font-size: 18px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--bg-subtle);
  border-radius: 8px;
}
.help-menu-item:hover .help-item-icon {
  background: var(--bg-surface);
}
.help-item-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.help-item-text strong {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
}
.help-item-text small {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.help-item-arrow {
  color: var(--text-muted);
  font-size: 13px;
  transition: transform 0.15s ease;
}
.help-menu-item:hover .help-item-arrow {
  transform: translateX(3px);
  color: var(--accent);
}

/* 反馈弹窗 */
.feedback-modal-box {
  max-width: 480px;
}
.fb-field-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.fb-textarea,
.fb-input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 14px;
  border-radius: var(--r-md);
  border: 1px solid var(--border-strong);
  background: var(--bg-app);
  color: var(--text-primary);
  font-size: 13.5px;
  font-family: inherit;
  line-height: 1.6;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.fb-textarea:focus,
.fb-input:focus {
  border-color: var(--accent);
  background: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}
.feedback-error {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--danger, #ef4444);
}

/* 视频播放弹窗 */
.video-modal-box {
  max-width: 820px;
  padding: 24px;
}
.video-container {
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  margin-top: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}
.demo-video-el {
  width: 100%;
  max-height: 65vh;
  display: block;
  background: #000;
  outline: none;
}