/* ==========================================================================
   English Studio —— 参考欧路「每日英语听力」dict.eudic.net/ting 的视觉语言
   浅灰底 + 白卡片 + 品牌蓝强调 + 左侧蓝色竖条标题，克制、信息优先
   ========================================================================== */

:root {
  --bg0: #f2f4f7;
  --bg1: #eef1f5;
  --paper: #ffffff;
  --paper-soft: #f7f9fc;
  --ink: #1f2733;
  --ink-2: #3d4757;
  --ink-3: #8a94a6;
  --line: #e5e8ee;
  --line-strong: #d4d9e2;
  --accent: #2e77e5;
  --accent-deep: #2569d1;
  --accent-soft: rgba(46, 119, 229, 0.08);
  --accent-2: #f59e0b;
  --accent-3: #2e77e5;
  --danger: #dc2626;
  --ok: #16a34a;
  --r: 10px;
  --r-sm: 8px;
  --speed: 200ms;
  --ease: cubic-bezier(0.2, 0.9, 0.2, 1);
  --font: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
  --font2: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
  --mono: "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--ink);
  font-family: var(--font2);
  font-size: 14px;
  line-height: 1.6;
  background: linear-gradient(180deg, var(--bg0), var(--bg1));
  background-attachment: fixed;
}

a { color: inherit; text-decoration: none; }

button { font-family: inherit; }

/* --------------------------------- 顶栏 --------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 max(16px, calc((100vw - 1120px) / 2 + 18px));
  height: 52px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 4px rgba(31, 39, 51, 0.04);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  color: var(--ink);
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #3f86f0, var(--accent-deep));
  box-shadow: 0 2px 6px rgba(46, 119, 229, 0.35);
  position: relative;
}

/* 品牌图标里放一个「E」白字，贴近词典类产品的小蓝方块图标 */
.brand-mark::after {
  content: "E";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  font-family: Georgia, serif;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; font-weight: 700; letter-spacing: 0.2px; }
.brand-text small { font-size: 11px; color: var(--ink-3); }

.nav {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  margin-left: auto;
  height: 100%;
  align-items: stretch;
}

.nav a {
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  color: #555f70;
  font-size: 14px;
  position: relative;
  transition: color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.nav a:hover { color: var(--accent); background: var(--accent-soft); }

/* 当前页：蓝字 + 底部蓝色指示条（欧路导航样式） */
.nav a.active { color: var(--accent); font-weight: 600; }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--accent);
}

/* 返回门户：用一条竖线与站内导航隔开，避免和「后台」混在一起 */
.nav a.nav-home {
  margin-left: 8px;
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 13px;
}
.nav a.nav-home::before {
  content: "←";
  margin-right: 4px;
  font-size: 13px;
  line-height: 1;
}
.nav a.nav-home:hover { color: var(--accent); background: var(--accent-soft); }

.userbox {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 9px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 12px;
  white-space: nowrap;
}

.userbox .avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  background: var(--accent-soft);
  border: 1px solid rgba(46, 119, 229, 0.25);
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 12px;
}

/* --------------------------------- 布局 --------------------------------- */

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 18px 56px;
}

.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  color: var(--ink);
}

.page-head h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.page-head p {
  margin: 6px 0 0;
  color: var(--ink-3);
  font-size: 13px;
  max-width: 68ch;
}

.page-head .chip { background: #fff; }
.page-head .chip.amber { background: #fff; }
.page-head .chip.solid { background: #fff; }

.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.side { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); }

.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 18px;
  box-shadow: 0 1px 3px rgba(31, 39, 51, 0.04);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

/* 欧路标志性的区块标题：左侧蓝色竖条 + 深色粗体 */
.panel-head h2 {
  margin: 0;
  position: relative;
  padding-left: 12px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.panel-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--accent);
}

.panel-head .hint { font-size: 12px; color: var(--ink-3); }

/* ------------------------------ 统计磁贴 ------------------------------ */

.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }

.tile {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(31, 39, 51, 0.04);
}

.tile .label {
  font-size: 12px;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 6px;
}

.tile .value {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.15;
  margin-top: 6px;
  letter-spacing: -0.3px;
  color: var(--ink);
}

.tile .value small { font-size: 13px; color: var(--ink-3); margin-left: 4px; font-weight: 400; }
.tile .foot { font-size: 12px; color: var(--ink-3); margin-top: 4px; }

.dot-accent { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.dot-blue { width: 7px; height: 7px; border-radius: 50%; background: #7aa8f0; }
.dot-amber { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); }
.dot-pink { width: 7px; height: 7px; border-radius: 50%; background: #f472a0; }

/* --------------------------------- 控件 -------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease), color var(--speed) var(--ease), opacity var(--speed) var(--ease);
}

.btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 主按钮：欧路式蓝色实心 */
.btn-primary {
  border: 1px solid var(--accent-deep);
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: #fff; box-shadow: 0 3px 10px rgba(46, 119, 229, 0.30); }

.btn-ghost { background: transparent; border-style: dashed; }

.btn-danger { color: var(--danger); border-color: rgba(220, 38, 38, 0.30); background: #fff; }
.btn-danger:hover { background: rgba(220, 38, 38, 0.06); border-color: var(--danger); color: var(--danger); }

.btn-sm { padding: 5px 12px; font-size: 12px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

label.field { display: block; margin-bottom: 12px; }

label.field > span {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-2);
  margin-bottom: 6px;
  letter-spacing: 0.2px;
}

label.field .req { color: var(--danger); margin-left: 2px; }

.input, .select, .textarea {
  width: 100%;
  padding: 9px 12px;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.input::placeholder, .textarea::placeholder { color: #aab3c2; }

.input:focus, .select:focus, .textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(46, 119, 229, 0.14);
}

.textarea { min-height: 96px; resize: vertical; line-height: 1.6; }

.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 12px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  color: var(--ink-2);
  white-space: nowrap;
}

.chip.solid { background: var(--accent-soft); border-color: rgba(46, 119, 229, 0.30); color: var(--accent-deep); }
.chip.amber { background: rgba(245, 158, 11, 0.10); border-color: rgba(217, 119, 6, 0.30); color: #b45309; }
.chip.blue { background: var(--accent-soft); border-color: rgba(46, 119, 229, 0.30); color: var(--accent-deep); }
.chip.pink { background: rgba(219, 39, 119, 0.08); border-color: rgba(219, 39, 119, 0.28); color: #be185d; }

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

.filter-bar {
  display: grid;
  grid-template-columns: minmax(180px, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

/* --------------------------------- 表格 -------------------------------- */

.table-wrap { overflow-x: auto; margin: 0 -4px; }

table.list { width: 100%; border-collapse: collapse; font-size: 13px; }

table.list th {
  text-align: left;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-3);
  padding: 8px 10px;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
  background: var(--paper-soft);
}

table.list td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

table.list tbody tr { transition: background var(--speed) var(--ease); }
table.list tbody tr:hover { background: #f5f9ff; }

.word-cell { display: flex; flex-direction: column; gap: 2px; }
.word-cell .w { font-weight: 700; font-size: 15px; letter-spacing: 0.2px; color: var(--accent-deep); }
.word-cell .p { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }

.muted { color: var(--ink-3); }
.small { font-size: 12px; }
.mono { font-family: var(--mono); }

.empty {
  text-align: center;
  padding: 34px 16px;
  color: var(--ink-3);
  font-size: 13px;
}

.empty strong { display: block; color: var(--ink-2); font-size: 14px; margin-bottom: 6px; }

.pager { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; font-size: 12px; color: var(--ink-3); }

/* ------------------------------ 进度 / 条 ------------------------------ */

.bar { height: 8px; border-radius: 999px; background: #e8ecf2; overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 999px; background: var(--accent); transition: width var(--speed) var(--ease); }
.bar.amber > i { background: var(--accent-2); }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 8px 14px; font-size: 13px; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; color: var(--ink); }

/* -------------------------------- 阅读页 ------------------------------- */

.reader { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(0, 1fr); gap: 16px; align-items: start; }

.article-title { margin: 0 0 4px; font-size: 24px; font-weight: 700; letter-spacing: 0.2px; }
.article-title-cn { color: var(--ink-3); font-size: 14px; margin-bottom: 14px; }

.article-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }

.article-body {
  font-size: 16px;
  line-height: 1.95;
  color: #2a3442;
}

.article-body p { margin: 0 0 16px; }

.article-body .target {
  background: linear-gradient(180deg, transparent 62%, rgba(46, 119, 229, 0.22) 62%);
  border-radius: 3px;
  cursor: pointer;
  padding: 0 1px;
  font-weight: 600;
  color: var(--accent-deep);
  transition: background var(--speed) var(--ease);
}

.article-body .target:hover { background: rgba(46, 119, 229, 0.18); }

.article-cn {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.9;
}

.article-cn p { margin: 0 0 10px; }

.side-list { display: flex; flex-direction: column; gap: 10px; }

.side-word {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--paper-soft);
  cursor: pointer;
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.side-word:hover { border-color: rgba(46, 119, 229, 0.45); background: #f5f9ff; }
.side-word .w { font-weight: 700; color: var(--accent-deep); }
.side-word .m { font-size: 12px; color: var(--ink-2); }

.question {
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.question:last-child { border-bottom: none; }
.question .q { font-weight: 600; margin-bottom: 8px; font-size: 14px; }

.option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  margin-bottom: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.option:hover { background: var(--accent-soft); border-color: rgba(46, 119, 229, 0.35); }
.option.correct { background: rgba(22, 163, 74, 0.08); border-color: rgba(22, 163, 74, 0.5); }
.option.wrong { background: rgba(220, 38, 38, 0.06); border-color: rgba(220, 38, 38, 0.45); }
.option input { accent-color: var(--accent); }

/* -------------------------------- 复习页 ------------------------------- */

.quiz-card {
  background: var(--paper);
  border-radius: var(--r);
  border: 1px solid var(--line);
  padding: 30px 26px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(31, 39, 51, 0.04);
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.quiz-word { font-size: 40px; font-weight: 700; letter-spacing: 0.5px; line-height: 1.2; color: var(--ink); }
.quiz-phonetic { font-family: var(--mono); font-size: 14px; color: var(--accent-deep); }
.quiz-meaning { font-size: 20px; color: var(--ink-2); }
.quiz-hint { font-size: 12px; color: var(--ink-3); }

.quiz-options { display: grid; gap: 8px; margin-top: 6px; }

.quiz-option {
  padding: 12px 14px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #ffffff;
  cursor: pointer;
  font-size: 14px;
  text-align: left;
  color: var(--ink);
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.quiz-option:hover { border-color: var(--accent); background: var(--accent-soft); }
.quiz-option.correct { background: rgba(22, 163, 74, 0.08); border-color: rgba(22, 163, 74, 0.55); }
.quiz-option.wrong { background: rgba(220, 38, 38, 0.06); border-color: rgba(220, 38, 38, 0.5); }

.quiz-progress { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--ink-3); }
.quiz-progress .bar { background: #e8ecf2; }

.spell-input {
  font-size: 26px;
  text-align: center;
  letter-spacing: 2px;
  padding: 12px;
}

.mode-switch { display: inline-flex; padding: 3px; gap: 3px; border-radius: 6px; background: #eef1f5; border: 1px solid var(--line); }
.mode-switch button {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: 5px;
  font-size: 12px;
  color: var(--ink-2);
  cursor: pointer;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}
.mode-switch button.active { background: #ffffff; color: var(--accent); font-weight: 600; box-shadow: 0 1px 3px rgba(31, 39, 51, 0.12); }

/* page-head 里同一套浅色方案（浅色页头无需覆盖，保留选择器防止旧页面依赖） */
.page-head .mode-switch { background: #eef1f5; border-color: var(--line); }
.page-head .mode-switch button { color: var(--ink-2); }
.page-head .mode-switch button.active { background: #ffffff; color: var(--accent); }

/* LLM 自检面板：浅色底、深色字，信息优先 */
.diag-banner {
  border-radius: var(--r-sm);
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.75;
  border: 1px solid var(--line);
  background: var(--paper);
}
.diag-banner.warn {
  background: rgba(245, 158, 11, 0.06);
  border-color: rgba(217, 119, 6, 0.35);
  color: #92500a;
}
.diag-banner.ok {
  background: rgba(22, 163, 74, 0.05);
  border-color: rgba(22, 163, 74, 0.35);
  color: #166534;
}
.diag-banner b { color: var(--ink); font-weight: 700; }
.diag-banner.warn b { color: #7c3d06; }
.diag-banner.ok b { color: #14532d; }
.diag-banner .muted { color: var(--ink-3); }

.result-banner {
  border-radius: var(--r-sm);
  padding: 14px 16px;
  font-size: 13px;
  background: var(--accent-soft);
  border: 1px solid rgba(46, 119, 229, 0.30);
  color: var(--accent-deep);
}

/* 答题反馈里的例句：放大正文字号，当前词高亮 */
.quiz-example {
  font-size: 17px;
  line-height: 1.75;
  margin-top: 8px;
  color: var(--ink);
  font-weight: 500;
}

.word-hl {
  background: rgba(245, 158, 11, 0.22);
  color: var(--accent-deep);
  padding: 1px 5px;
  border-radius: 4px;
  font-weight: 700;
}

/* ------------------------------- 提示条 -------------------------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%) translateY(12px);
  z-index: 90;
  padding: 11px 18px;
  border-radius: 8px;
  background: #2a3442;
  color: #fff;
  font-size: 13px;
  box-shadow: 0 8px 24px rgba(31, 39, 51, 0.30);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease);
  max-width: min(90vw, 520px);
  text-align: center;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: #b91c1c; }
.toast.ok { background: #15803d; }

.gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(31, 39, 51, 0.45);
  backdrop-filter: blur(4px);
}

.gate-card {
  background: var(--paper);
  border-radius: var(--r);
  padding: 26px;
  text-align: center;
  max-width: 380px;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(31, 39, 51, 0.18);
}

.gate-card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; }
.gate-card p { margin: 0 0 16px; font-size: 13px; color: var(--ink-2); }

.skeleton { height: 14px; border-radius: 7px; background: linear-gradient(90deg, #eceff4, #f6f8fb, #eceff4); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* 词库页：单词详情面板固定在右侧屏幕中间，不随页面滚动（桌面端） */
@media (min-width: 961px) {
  .detail-fixed {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    /* 右缘与内容区（max-width 1120 + 18px 内边距）右列对齐 */
    right: max(18px, calc((100vw - 1120px) / 2 + 18px));
    /* 宽度约等于 .grid.side 的 1fr 右列（(视口-36内边距-14间距)/2.7） */
    width: min(396px, calc((100vw - 50px) / 2.7));
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    z-index: 20;
  }
}
@media (max-width: 960px) {
  /* 窄屏单列布局时恢复文档流，避免盖住列表 */
  .detail-fixed { position: static; transform: none; }
}

/* ------------------------------- 响应式 -------------------------------- */

@media (max-width: 960px) {
  .grid.side, .reader { grid-template-columns: minmax(0, 1fr); }
  .tiles, .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .topbar { flex-wrap: wrap; gap: 10px; padding: 10px 14px; height: auto; }
  .nav { order: 3; width: 100%; margin-left: 0; justify-content: space-between; height: auto; }
  .nav a { padding: 6px 10px; font-size: 12px; }
  .nav a.active::after { left: 8px; right: 8px; }
  .userbox { margin-left: auto; border-left: none; padding-left: 0; }
  .wrap { padding: 18px 14px 44px; }
  .page-head h1 { font-size: 20px; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .field-row, .filter-bar { grid-template-columns: minmax(0, 1fr); }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-body { font-size: 15px; }
  .quiz-word { font-size: 32px; }
  .panel { padding: 14px; }
  table.list th:nth-child(3), table.list td:nth-child(3) { display: none; }
}

/* ==========================================================================
   口语对话练习（conversation.html）
   ========================================================================== */

[hidden] { display: none !important; }

.chat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 288px;
  gap: 16px;
  align-items: start;
}

.chat-panel {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  height: clamp(520px, calc(100dvh - 232px), 760px);
}

/* ------------------------------ 场景选择条 ------------------------------- */

.scene-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.scene-pick {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.scene-pick-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}

.scene-select {
  height: 36px;
  min-width: 168px;
  max-width: 240px;
  padding: 0 30px 0 10px;
  font-size: 13px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-3) 50%),
                    linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position: calc(100% - 16px) 15px, calc(100% - 11px) 15px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.scene-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 220px;
  min-width: 0;
}
.scene-custom .input { height: 36px; min-width: 0; flex: 1; font-size: 13px; }
.scene-custom .btn { flex: 0 0 auto; height: 36px; }

.chat-notice {
  margin: 12px 14px 0;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(245, 158, 11, 0.35);
  background: rgba(245, 158, 11, 0.08);
  color: #8a5a00;
  font-size: 12.5px;
  line-height: 1.7;
}

/* -------------------------------- 消息流 -------------------------------- */

.chat-log {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px 16px 8px;
  background:
    radial-gradient(circle at 12% 0%, rgba(46, 119, 229, 0.05), transparent 46%),
    var(--paper-soft);
  scroll-behavior: smooth;
}

.chat-empty {
  padding: 40px 8px;
  text-align: center;
  color: var(--ink-3);
  font-size: 13px;
}
.chat-empty .skeleton { margin: 0 auto; }

.msg {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 14px;
  max-width: 88%;
}
.msg.user { flex-direction: row-reverse; margin-left: auto; }

.msg-avatar {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #4f93f0, #2e77e5);
  box-shadow: 0 2px 6px rgba(46, 119, 229, 0.3);
}

.msg-body { min-width: 0; }

.bubble {
  padding: 10px 14px;
  border-radius: 12px 12px 12px 3px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(31, 39, 51, 0.04);
}
.msg.user .bubble {
  border-radius: 12px 12px 3px 12px;
  background: var(--accent);
  border-color: var(--accent-deep);
  color: #fff;
  box-shadow: 0 3px 10px rgba(46, 119, 229, 0.22);
}

.bubble-en {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  font-family: var(--font);
  word-break: break-word;
}

.bubble-cn {
  margin: 8px 0 0;
  padding-top: 7px;
  border-top: 1px dashed var(--line-strong);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-3);
  display: none;
}
.bubble-cn.on { display: block; }
.msg.assistant .bubble-cn { display: block; }
.msg.user .bubble-cn { display: none; }

.msg-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
  padding: 0 2px;
}
.msg.user .msg-tools { justify-content: flex-end; }

.mini {
  border: none;
  background: transparent;
  padding: 2px 4px;
  font-size: 11.5px;
  color: var(--ink-3);
  cursor: pointer;
  border-radius: 4px;
  transition: color var(--speed) var(--ease), background var(--speed) var(--ease);
}
.mini:hover { color: var(--accent); background: var(--accent-soft); }

.mini-tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(46, 119, 229, 0.1);
  color: var(--accent);
  font-size: 11px;
  line-height: 1.6;
}
.msg.user .mini-tag { background: rgba(255, 255, 255, 0.22); color: #fff; }

.word-tips {
  margin-top: 6px;
  font-size: 11.5px;
  color: var(--ink-3);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

/* 纠错提示：夹在用户消息与回应之间 */
.msg-tip {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin: -6px 0 14px 36px;
  padding: 8px 12px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-left: 3px solid var(--accent-2);
  background: rgba(245, 158, 11, 0.07);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-2);
  max-width: 82%;
}
.msg-tip strong { color: var(--ink); font-weight: 600; }
.tip-badge {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 700;
  color: #8a5a00;
  background: rgba(245, 158, 11, 0.18);
  border-radius: 4px;
  padding: 1px 6px;
}

/* 正在输入 */
.typing-bubble { display: flex; gap: 4px; padding: 14px; }
.typing-bubble i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink-3); opacity: 0.5;
  animation: typing 1.1s infinite ease-in-out;
}
.typing-bubble i:nth-child(2) { animation-delay: 0.15s; }
.typing-bubble i:nth-child(3) { animation-delay: 0.3s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-4px); opacity: 1; } }

/* -------------------------------- 输入区 -------------------------------- */

.chat-composer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.rec-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 40px;
  min-width: 92px;
  padding: 0 14px;
  border-radius: 20px;
  border: 1px solid var(--line-strong);
  background: var(--paper-soft);
  color: var(--ink-2);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}
.rec-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.rec-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.rec-btn .rec-icon { font-size: 15px; line-height: 1; }

.rec-btn.recording {
  background: var(--danger);
  border-color: #b91c1c;
  color: #fff;
  animation: recPulse 1.4s infinite;
}
.rec-btn.busy { opacity: 0.7; pointer-events: none; }
@keyframes recPulse {
  0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.45); }
  70% { box-shadow: 0 0 0 10px rgba(220, 38, 38, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}

.chat-input {
  flex: 1;
  min-width: 0;
  height: 40px;
}
.chat-send { height: 40px; padding: 0 20px; flex: 0 0 auto; }

.chat-status {
  padding: 0 16px 10px;
  font-size: 11.5px;
  color: var(--ink-3);
  background: var(--paper);
  min-height: 18px;
}
.chat-status[data-speaking="1"]::after {
  content: "🔊 正在朗读…";
  margin-left: 8px;
  color: var(--accent);
}

.rec-file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 14px 12px;
  background: var(--paper);
}
.rec-file-row .small { flex: 1; min-width: 180px; }

/* ------------------------------- 右侧设置 ------------------------------- */

.side-block + .side-block { margin-top: 18px; }
.side-label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 0;
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
  position: relative;
}
.switch-row input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch-row i {
  flex: 0 0 auto;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: #d7dce5;
  position: relative;
  transition: background var(--speed) var(--ease);
}
.switch-row i::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(31, 39, 51, 0.28);
  transition: transform var(--speed) var(--ease);
}
.switch-row input:checked + i { background: var(--accent); }
.switch-row input:checked + i::after { transform: translateX(16px); }
.switch-row input:focus-visible + i { box-shadow: 0 0 0 3px rgba(46, 119, 229, 0.2); }

.hint-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.5;
}
.hint-list li {
  padding: 7px 10px;
  border-radius: 6px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  margin-bottom: 6px;
}

.recent-list { display: flex; flex-direction: column; gap: 6px; }
.recent-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--paper-soft);
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}
.recent-item:hover { border-color: var(--accent); background: var(--accent-soft); }
.recent-scene { font-size: 12.5px; color: var(--ink); font-weight: 600; }
.recent-meta { font-size: 11px; color: var(--ink-3); }

@media (max-width: 960px) {
  .chat-layout { grid-template-columns: minmax(0, 1fr); }
  .chat-panel { height: min(72dvh, 620px); }
  .chat-side { order: 2; }
}

@media (max-width: 720px) {
  .chat-panel { height: calc(100dvh - 260px); min-height: 420px; }
  .chat-log { padding: 12px 12px 6px; }
  .msg { max-width: 94%; }
  .msg-tip { margin-left: 0; max-width: 100%; }
  .rec-btn { min-width: 76px; padding: 0 12px; }
  .rec-label { font-size: 12px; }
  .chat-send { padding: 0 14px; }
  .bubble-en { font-size: 15px; }
}

/* 首页的对话练习横幅 */
.talk-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 16px;
  margin-bottom: 26px;
  padding: 18px 22px;
  border: 1px solid rgba(46, 119, 229, 0.22);
  background:
    radial-gradient(circle at 88% 10%, rgba(46, 119, 229, 0.16), transparent 58%),
    linear-gradient(120deg, #f4f8ff, #ffffff 58%);
}
.talk-banner .talk-copy { min-width: 0; }
.talk-banner h2 { margin: 0 0 6px; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.talk-banner p { margin: 0; font-size: 13px; line-height: 1.75; color: var(--ink-2); max-width: 62ch; }
.talk-banner .btn { flex: 0 0 auto; }

@media (max-width: 720px) {
  .talk-banner { flex-direction: column; align-items: flex-start; padding: 16px; }
  .talk-banner .btn { width: 100%; }
}

@media (max-width: 720px) {
  .scene-bar { gap: 8px; padding: 10px 12px; }
  .scene-pick { flex: 1 1 100%; }
  .scene-select { flex: 1; max-width: none; }
  .scene-custom { flex: 1 1 100%; }
}

/* ==========================================================================
   常用句型（sentences.html）
   ========================================================================== */

.sent-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.sent-side { padding: 14px; position: sticky; top: 76px; }

.scene-list { display: flex; flex-direction: column; gap: 4px; }

.scene-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: all var(--speed) var(--ease);
}
.scene-item:hover { background: var(--paper-soft); color: var(--ink); }
.scene-item.active {
  background: var(--accent-soft);
  border-color: rgba(46, 119, 229, 0.3);
  color: var(--accent);
  font-weight: 600;
}
.scene-item-emoji { flex: 0 0 auto; font-size: 14px; }
.scene-item-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.scene-item-count {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--ink-3);
  background: var(--paper-soft);
  border-radius: 999px;
  padding: 1px 7px;
}
.scene-item.active .scene-item-count { background: #fff; color: var(--accent); }
.scene-item-del {
  flex: 0 0 auto;
  width: 18px; height: 18px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: 12px;
  color: var(--ink-3);
  visibility: hidden;
}
.scene-item:hover .scene-item-del { visibility: visible; }
.scene-item-del:hover { background: var(--danger); color: #fff; }

.scene-add { display: flex; gap: 6px; margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); }
.scene-add .input { min-width: 0; flex: 1; height: 34px; font-size: 12.5px; }
.scene-add .btn { flex: 0 0 auto; height: 34px; }

.sent-main { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.sent-tools { padding: 14px 16px; }
.tool-row { display: flex; align-items: center; gap: 10px; }
.tool-row + .tool-row { margin-top: 10px; }
.tool-label { flex: 0 0 auto; font-size: 12.5px; color: var(--ink-3); }
.tool-input { flex: 1; min-width: 0; }
.sent-tools select.input { max-width: 220px; }
.sent-tools .btn { flex: 0 0 auto; }

.gen-box { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); }
.gen-box summary { cursor: pointer; font-size: 12.5px; color: var(--accent); user-select: none; }
.gen-box .tool-row { margin-top: 10px; }
.gen-box .small { margin: 8px 0 0; color: var(--ink-3); font-size: 11.5px; }

.sent-list-panel { padding: 16px 16px 8px; }
.sent-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sent-list-head h2 { margin: 0; font-size: 15px; }
.tool-row-search .input { width: 220px; max-width: 60vw; height: 34px; font-size: 12.5px; }

.sentence-list { display: flex; flex-direction: column; }

.sentence-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}
.sentence-card:last-child { border-bottom: none; }
.sentence-main { flex: 1; min-width: 0; }
.sentence-en {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}
.sentence-avoid {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--ink-3);
  text-decoration: line-through;
  text-decoration-color: rgba(220, 38, 38, 0.5);
}
.sentence-cn { margin: 4px 0 0; font-size: 12.5px; color: var(--ink-2); line-height: 1.6; }
.sentence-side { flex: 0 0 auto; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.tag-ai { background: rgba(16, 185, 129, 0.12); color: #047857; }
.sentence-actions { flex: 0 0 auto; display: flex; flex-direction: column; gap: 2px; }
.sentence-actions .mini { font-size: 13px; padding: 3px 5px; }

.sent-empty { padding: 36px 10px; text-align: center; color: var(--ink-3); font-size: 13px; }

@media (max-width: 960px) {
  .sent-layout { grid-template-columns: minmax(0, 1fr); }
  .sent-side { position: static; }
  .scene-list { flex-direction: row; flex-wrap: wrap; }
  .scene-item { width: auto; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
  .scene-item-del { display: none; }
}

@media (max-width: 720px) {
  .sent-tools { padding: 12px; }
  .tool-row { flex-wrap: wrap; }
  .tool-row .input, .tool-row .btn { flex: 1 1 100%; }
  .sent-tools select.input { max-width: none; }
  .tool-row-search { width: 100%; }
  .tool-row-search .input { width: 100%; max-width: none; }
  .sentence-actions { flex-direction: row; }
  .sentence-side { display: none; }
}

/* ==========================================================================
   对比学习（contrast.html）
   视觉目标：一屏看清"这 3 个词差在哪"，不做文字堆砌——每张卡只放
   释义 / 怎么选 / 常搭配 / 一条 ✅ 例句 / 一条 ❌ 误用。
   ========================================================================== */

.ct-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.ct-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.ct-tab:hover { border-color: var(--accent); color: var(--accent); }
.ct-tab.active {
  background: var(--accent);
  border-color: var(--accent-deep);
  color: #fff;
  box-shadow: 0 2px 8px rgba(46, 119, 229, 0.25);
}

.ct-tab .n {
  font-size: 11px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--paper-soft);
  color: var(--ink-3);
}

.ct-tab.active .n { background: rgba(255, 255, 255, 0.24); color: #fff; }

.ct-tabs-note { margin-left: auto; font-size: 12px; color: var(--ink-3); }

.ct-layout {
  display: grid;
  grid-template-columns: 244px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.ct-side { padding: 12px; position: sticky; top: 76px; }

.ct-side-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 4px 8px;
}

.ct-group-list { display: flex; flex-direction: column; gap: 3px; }

.ct-list-empty { margin: 0; padding: 14px 6px; font-size: 12.5px; color: var(--ink-3); }

.ct-group {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-2);
  text-align: left;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.ct-group:hover { background: var(--paper-soft); color: var(--ink); }
.ct-group.active {
  background: var(--accent-soft);
  border-color: rgba(46, 119, 229, 0.28);
  color: var(--accent);
}

.ct-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--line-strong);
}
.ct-dot.review { background: var(--accent-2); }
.ct-dot.mastered { background: var(--ok); }

.ct-group-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.ct-group-title {
  font-size: 13px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ct-group-words {
  font-size: 11px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ct-group-flag { flex: 0 0 auto; font-size: 12px; color: var(--accent-2); font-weight: 700; }
.ct-group.active .ct-group-flag { color: var(--accent); }

.ct-side-add { width: 100%; margin-top: 10px; }

.ct-main { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.ct-empty { padding: 40px 20px; text-align: center; color: var(--ink-3); font-size: 13px; }
.ct-empty strong { display: block; color: var(--ink-2); font-size: 15px; margin-bottom: 6px; }

/* -------------------------------- 组头部 -------------------------------- */

.ct-head { padding: 16px 18px; }

.ct-head-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.ct-kind {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  border: 1px solid rgba(46, 119, 229, 0.22);
}

.ct-head-title { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: 0.2px; }
.ct-head-actions { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }

.ct-note {
  margin: 10px 0 0;
  padding: 9px 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--paper-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}

.ct-muted { color: var(--ink-3); }

/* -------------------------------- 词卡片 -------------------------------- */

.ct-cards {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
}

.ct-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: 0 1px 3px rgba(31, 39, 51, 0.04);
}

.ct-card-head { display: flex; align-items: baseline; gap: 8px; }
.ct-word { margin: 0; font-size: 20px; font-weight: 700; letter-spacing: 0.2px; }
.ct-phon { font-size: 12px; color: var(--ink-3); font-family: var(--mono); }
.ct-say { margin-left: auto; }
.ct-say.mini { font-size: 14px; }

.ct-meaning { margin: 0; font-size: 13px; line-height: 1.6; color: var(--ink); }
.ct-pos {
  display: inline-block;
  margin-right: 6px;
  font-size: 11px;
  font-style: italic;
  color: var(--ink-3);
}

.ct-block-label {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  margin-bottom: 3px;
}

.ct-block p { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--ink-2); }
.ct-colloc { color: var(--ink-2); font-style: italic; }

.ct-ex {
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 12.5px;
  line-height: 1.6;
}

.ct-ex.ok { background: rgba(22, 163, 74, 0.07); }
.ct-ex.bad { background: rgba(220, 38, 38, 0.06); }
.ct-ex .sign { flex: 0 0 auto; font-weight: 700; }
.ct-ex.ok .sign { color: var(--ok); }
.ct-ex.bad .sign { color: var(--danger); }
.ct-ex p { margin: 0; color: var(--ink); }
.ct-ex em {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 11.5px;
  color: var(--ink-3);
}

.ct-card-foot {
  display: flex;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

.ct-card-foot .mini { font-size: 12px; color: var(--ink-3); }
.ct-card-foot .mini:hover { color: var(--accent); }
.ct-card-foot .mini.danger:hover { color: var(--danger); }

/* -------------------------------- 底部条 -------------------------------- */

.ct-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px 18px;
}

.ct-foot-text { display: flex; flex-direction: column; gap: 2px; }
.ct-foot-text strong { font-size: 14px; }
.ct-foot-text span { font-size: 12px; color: var(--ink-3); }

/* -------------------------------- 测验 -------------------------------- */

.ct-quiz { padding: 18px 20px 20px; }

.ct-quiz-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.ct-quiz-step { font-size: 12.5px; font-weight: 700; color: var(--ink-2); }
.ct-quiz-type {
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}
.ct-quiz-quit { margin-left: auto; }

.ct-bar { height: 5px; border-radius: 999px; background: var(--line); overflow: hidden; }
.ct-bar i { display: block; height: 100%; background: var(--accent); transition: width 320ms var(--ease); }

.ct-q-prompt {
  margin: 18px 0 4px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
}

.ct-blank {
  display: inline-block;
  min-width: 72px;
  margin: 0 2px;
  border-bottom: 2px solid var(--accent);
  vertical-align: -2px;
}

.ct-q-hint { margin: 0; font-size: 12.5px; color: var(--ink-3); }

.ct-options { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }

.ct-opt {
  padding: 11px 14px;
  text-align: left;
  font-size: 14px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.ct-opt:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.ct-opt:disabled { cursor: default; }
.ct-opt.right {
  border-color: var(--ok);
  background: rgba(22, 163, 74, 0.10);
  color: #0f7a3d;
  font-weight: 600;
}
.ct-opt.wrong {
  border-color: var(--danger);
  background: rgba(220, 38, 38, 0.08);
  color: var(--danger);
}

.ct-feedback {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 14px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.65;
  background: var(--paper-soft);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}
.ct-feedback strong { font-size: 13px; }
.ct-feedback.ok { border-left-color: var(--ok); }
.ct-feedback.ok strong { color: #0f7a3d; }
.ct-feedback.bad { border-left-color: var(--danger); }
.ct-feedback.bad strong { color: var(--danger); }

.ct-quiz-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

/* -------------------------------- 成绩 -------------------------------- */

.ct-result { padding: 20px; }

.ct-score { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.ct-score-num { font-size: 42px; font-weight: 800; line-height: 1; color: var(--accent); }
.ct-score-num small { font-size: 16px; font-weight: 600; color: var(--ink-3); }
.ct-score-text { display: flex; flex-direction: column; gap: 3px; }
.ct-score-text strong { font-size: 15px; }
.ct-score-text span { font-size: 12.5px; color: var(--ink-3); }

.ct-review-list { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }

.ct-review {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-radius: 8px;
  background: #fff;
}
.ct-review.ok { border-left-color: var(--ok); }
.ct-review.bad { border-left-color: var(--danger); }

.ct-review-head { display: flex; align-items: baseline; gap: 8px; }
.ct-review-idx {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-3);
}
.ct-review-prompt { flex: 1; font-size: 12.5px; line-height: 1.6; color: var(--ink-2); }
.ct-review-mark { flex: 0 0 auto; font-weight: 700; }
.ct-review.ok .ct-review-mark { color: var(--ok); }
.ct-review.bad .ct-review-mark { color: var(--danger); }
.ct-review-answer { margin: 6px 0 0; font-size: 12.5px; color: var(--ink-2); }
.ct-review-answer b { color: var(--accent-deep); }
.ct-review-explain { margin: 4px 0 0; font-size: 12px; color: var(--ink-3); line-height: 1.6; }

/* -------------------------------- 弹层 -------------------------------- */

.ct-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(18, 24, 33, 0.42);
}
.ct-modal[hidden] { display: none; }

.ct-modal-card {
  width: min(520px, 94vw);
  max-height: 90vh;
  overflow: auto;
  padding: 20px 22px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.22);
}
.ct-modal-card h3 { margin: 0 0 4px; font-size: 17px; }
.ct-modal-card p.tip { margin: 0 0 14px; font-size: 12.5px; color: var(--ink-3); }

.ct-kind-pick { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ct-kind-opt {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  text-align: left;
  font-family: inherit;
  font-size: 13px;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}
.ct-kind-opt strong { font-size: 13px; }
.ct-kind-opt .small { color: var(--ink-3); }
.ct-kind-opt:hover { border-color: var(--accent); }
.ct-kind-opt.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.ct-word-inputs { display: grid; gap: 8px; }
.ct-word-row { display: flex; align-items: center; gap: 8px; }
.ct-word-row .idx { flex: 0 0 auto; width: 14px; font-size: 12px; color: var(--ink-3); }

.ct-modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* -------------------------------- 响应式 -------------------------------- */

@media (max-width: 960px) {
  .ct-layout { grid-template-columns: minmax(0, 1fr); }
  .ct-side { position: static; }
  .ct-group-list { flex-direction: row; flex-wrap: wrap; }
  .ct-group { width: auto; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
  .ct-group-words { display: none; }
  .ct-side-add { width: auto; }
}

@media (max-width: 720px) {
  .ct-cards { grid-template-columns: minmax(0, 1fr); }
  .ct-head-actions { width: 100%; margin-left: 0; }
  .ct-q-prompt { font-size: 16px; }
  .ct-foot .btn { width: 100%; }
  .ct-quiz-actions .btn { flex: 1 1 auto; }
  .ct-modal-card { padding: 16px; }
}

/* ==========================================================================
   词库勾选 → 对比组（words.html）
   ========================================================================== */

.words-table th.wl-pick { width: 30px; padding: 8px 4px 8px 10px; text-align: center; }
.words-table td.wl-pick { width: 30px; padding: 11px 4px 11px 10px; vertical-align: middle; }
.words-table .wl-pick-tip { font-size: 10px; letter-spacing: 0.04em; }
.words-table tbody tr.picked { background: var(--accent-soft); }

.wl-cb {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.wl-hint { margin: -4px 0 12px; font-size: 12px; color: var(--ink-3); }

/* -------------------------------- 底部条 -------------------------------- */

.wl-bar {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(720px, calc(100vw - 32px));
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(6px);
}

.wl-bar-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.wl-bar-main strong { font-size: 13.5px; }
.wl-bar-words {
  font-size: 12px;
  color: var(--ink-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wl-bar-actions { margin-left: auto; display: flex; gap: 8px; flex-shrink: 0; }

/* -------------------------------- 弹层 -------------------------------- */

.wl-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(18, 24, 33, 0.42);
}

.wl-card {
  width: min(520px, 94vw);
  max-height: 88vh;
  overflow: auto;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.22);
}

.wl-card h3 { margin: 0 0 4px; font-size: 17px; }
.wl-card-tip { margin: 0 0 14px; font-size: 12.5px; color: var(--ink-3); }

.wl-modes {
  display: flex;
  gap: 6px;
  padding: 3px;
  margin-bottom: 14px;
  background: var(--paper-soft);
  border-radius: 10px;
}

.wl-mode {
  flex: 1;
  padding: 7px 10px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.wl-mode.active {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.wl-groups { display: flex; flex-direction: column; gap: 8px; max-height: 46vh; overflow: auto; }
.wl-groups-empty { margin: 0; padding: 18px 6px; font-size: 12.5px; color: var(--ink-3); text-align: center; }

.wl-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 12px;
  text-align: left;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.wl-group:hover { border-color: var(--accent); }
.wl-group.active { border-color: var(--accent); background: var(--accent-soft); }

.wl-group-row { display: flex; align-items: baseline; gap: 8px; }
.wl-group-title { font-size: 13.5px; font-weight: 700; }
.wl-group-room { margin-left: auto; font-size: 11.5px; color: var(--ink-3); }
.wl-group-sub { font-size: 12px; color: var(--ink-3); }
.wl-group-dup { font-size: 11.5px; color: #b45309; }

.wl-card-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

@media (max-width: 720px) {
  /* 加了勾选列之后，原来的"隐藏第 3 列"会误伤释义列，这里改回按分类列隐藏 */
  table.list.words-table th:nth-child(3),
  table.list.words-table td:nth-child(3) { display: table-cell; }
  table.list.words-table th.wl-cat,
  table.list.words-table td.wl-cat { display: none; }

  .wl-bar { flex-direction: column; align-items: stretch; gap: 10px; bottom: 10px; }
  .wl-bar-actions { margin-left: 0; }
  .wl-bar-actions .btn { flex: 1; }
  .wl-card { padding: 16px; }
}