/* ============================================================
   真题词场 · 全局样式
   CSS 变量 + 单一文件，无外部依赖，可离线
   ============================================================ */
:root {
  --brand: #4a90e2;
  --brand-dark: #3572b0;
  --brand-soft: #eaf2fc;
  --success: #2ecc71;
  --success-soft: #e8f9f0;
  --danger: #e74c3c;
  --danger-soft: #fdecea;
  --warn: #f39c12;
  --warn-soft: #fef5e7;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #fbfcfe;
  --border: #e3e8ef;
  --text: #22303f;
  --text-2: #5b6b7c;
  --text-3: #8a99aa;
  --shadow: 0 6px 24px rgba(24, 44, 79, .08);
  --shadow-sm: 0 2px 8px rgba(24, 44, 79, .06);
  --radius: 16px;
  --radius-sm: 10px;
  --font-scale: 1;
  --word-size: 48px;
  --side-width: 224px;
  /* 西里尔字母本地字体栈：只用系统字体，不引入任何网络字体 */
  --font-ru: "PT Sans", "Segoe UI", "Arial", "Noto Sans", sans-serif;
}
[data-theme="dark"] {
  --brand: #5fa8f5;
  --brand-dark: #7dbaf7;
  --brand-soft: #17293d;
  --success: #43d98a;
  --success-soft: #143126;
  --danger: #ff6f61;
  --danger-soft: #3a1c1a;
  --warn: #f6b93b;
  --warn-soft: #3a2c12;
  --bg: #0f1620;
  --surface: #17202b;
  --surface-2: #1c2733;
  --border: #2a3746;
  --text: #e6edf5;
  --text-2: #a9b8c9;
  --text-3: #728296;
  --shadow: 0 8px 28px rgba(0, 0, 0, .45);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, .3);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "PT Sans", "Arial", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: calc(15px * var(--font-scale));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }
code { background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; font-size: .9em; }

:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 55%, transparent); outline-offset: 2px; }

/* ---------- 启动 ---------- */
.boot {
  position: fixed; inset: 0; display: flex; flex-direction: column; gap: 12px;
  align-items: center; justify-content: center; background: var(--bg); z-index: 50; padding: 24px;
}
.boot-mark, .brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px; color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), #6fc0a8);
}
.boot p { color: var(--text-2); margin: 0; }
.boot-hint { color: var(--text-3); font-size: 13px; max-width: 460px; text-align: center; }
.skeleton-line { height: 14px; border-radius: 7px; background: linear-gradient(90deg, var(--surface), var(--border), var(--surface)); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
.w60 { width: 60%; } .w40 { width: 40%; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---------- 布局 ---------- */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--side-width); flex: 0 0 var(--side-width); background: var(--surface);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
  padding: 20px 14px; position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); padding: 4px 6px 18px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; }
.brand-copy strong { font-size: 16px; letter-spacing: .5px; }
.brand-copy em { font-style: normal; font-size: 10px; color: var(--text-3); letter-spacing: 1.4px; text-transform: uppercase; }
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px;
  color: var(--text-2); font-size: 14px; transition: background .15s, color .15s;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.nav-ico { width: 18px; text-align: center; font-size: 15px; }
.nav-badge {
  margin-left: auto; background: var(--danger); color: #fff; font-size: 11px;
  min-width: 18px; height: 18px; border-radius: 9px; display: inline-flex; align-items: center; justify-content: center; padding: 0 5px;
}
.nav-badge:empty, .nav-badge.zero { display: none; }
.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 10px; }
.streak-mini { display: flex; align-items: center; gap: 10px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; }
.flame { font-size: 20px; }
.streak-mini strong { display: block; font-size: 15px; }
.streak-mini small { color: var(--text-3); }
.side-total { font-size: 12px; color: var(--text-3); margin: 0; text-align: center; }

.workspace { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 14px; padding: 16px 28px; background: var(--surface);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
}
.top-title h1 { font-size: 20px; margin: 0; letter-spacing: .3px; }
.top-title p { margin: 0; font-size: 12px; color: var(--text-3); }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.pill { background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; font-size: 12px; color: var(--text-2); white-space: nowrap; }
.pill.warm { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, var(--border)); }
.menu-btn { display: none; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn:hover { color: var(--brand); border-color: var(--brand); }
.view { padding: 24px 28px 40px; flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; }
.copyright { text-align: center; font-size: 11px; color: var(--text-3); padding: 10px 20px 24px; }

/* ---------- 基础组件 ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.card.pad { padding: 20px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.grid { display: grid; gap: 16px; }
.grid > * { min-width: 0; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.section-head h2 { font-size: 17px; margin: 0; }
.section-head .muted { font-size: 12px; }
.muted { color: var(--text-3); }
.small { font-size: 12px; }
.center { text-align: center; }
.mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.mb0 { margin-bottom: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  border-radius: 10px; padding: 9px 16px; font-size: 14px; font-weight: 500; transition: transform .15s, border-color .15s, background .15s;
}
.btn:hover { border-color: var(--brand); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .5; pointer-events: none; }
.btn-group { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.btn-group button { border: 0; background: transparent; padding: 7px 12px; font-size: 12px; color: var(--text-2); }
.btn-group button.active { background: var(--brand); color: #fff; }

.tag {
  display: inline-flex; align-items: center; gap: 4px; border-radius: 999px; padding: 2px 9px;
  font-size: 11px; border: 1px solid var(--border); color: var(--text-2); background: var(--surface-2);
}
.tag.brand { color: var(--brand); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); background: var(--brand-soft); }
.tag.success { color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, var(--border)); background: var(--success-soft); }
.tag.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: var(--danger-soft); }
.tag.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); background: var(--warn-soft); }

.empty { text-align: center; padding: 46px 20px; color: var(--text-3); }
.empty-mark { font-size: 34px; opacity: .5; display: block; margin-bottom: 8px; }
.empty h3 { margin: 0 0 6px; color: var(--text-2); font-size: 16px; }
.empty p { margin: 0 0 14px; font-size: 13px; }

.bar { height: 8px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), #6fc0a8); border-radius: 999px; transition: width .3s; }

/* ---------- 学习中心 ---------- */
.hero {
  position: relative; overflow: hidden; border-radius: 20px; padding: 26px 28px;
  background: linear-gradient(120deg, #4a90e2 0%, #5fb4d8 55%, #66c2a5 100%); color: #fff;
  box-shadow: 0 12px 30px rgba(74, 144, 226, .28);
}
.hero::after { content: ""; position: absolute; right: -70px; top: -90px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.14); }
.hero::before { content: ""; position: absolute; right: 90px; bottom: -120px; width: 200px; height: 200px; border-radius: 50%; background: rgba(255,255,255,.08); }
.hero h2 { margin: 0 0 6px; font-size: 24px; }
.hero p { margin: 0 0 18px; opacity: .92; font-size: 13px; max-width: 560px; }
.hero .btn { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.4); color: #fff; backdrop-filter: blur(4px); }
.hero .btn:hover { background: rgba(255,255,255,.28); }
.hero-stats { display: flex; gap: 26px; margin-top: 18px; flex-wrap: wrap; }
.hero-stats b { font-size: 22px; display: block; line-height: 1.1; }
.hero-stats span { font-size: 11px; opacity: .82; }

.stat-card { padding: 16px 18px; }
.stat-card b { display: block; font-size: 26px; line-height: 1.2; }
.stat-card span { font-size: 12px; color: var(--text-3); }
.stat-card small { display: block; margin-top: 6px; font-size: 11px; color: var(--text-3); }

.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.quick a {
  display: flex; flex-direction: column; gap: 4px; padding: 16px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--border); color: var(--text); transition: .18s;
}
.quick a:hover { transform: translateY(-2px); border-color: var(--brand); box-shadow: var(--shadow); }
.quick .ic { font-size: 20px; }
.quick strong { font-size: 14px; }
.quick span { font-size: 11px; color: var(--text-3); }

.exam-row { display: flex; align-items: center; gap: 14px; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.exam-row:last-child { border-bottom: 0; }
.exam-row .meta { flex: 1; min-width: 0; }
.exam-row .meta strong { display: block; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.exam-row .meta span { font-size: 11px; color: var(--text-3); }

/* ---------- 学习卡片 ---------- */
.learn-top { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.learn-top .grow { flex: 1; min-width: 200px; }
.learn-top .bar { margin-top: 6px; }
.type-tabs { display: inline-flex; gap: 6px; background: var(--surface-2); border: 1px solid var(--border); padding: 4px; border-radius: 12px; flex-wrap: wrap; }
.type-tabs button { border: 0; background: transparent; padding: 6px 11px; border-radius: 8px; font-size: 12px; color: var(--text-2); }
.type-tabs button.active { background: var(--surface); color: var(--brand); box-shadow: var(--shadow-sm); font-weight: 600; }

.study-card {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: 22px;
  box-shadow: var(--shadow); padding: 34px 34px 26px; min-height: 420px;
  display: flex; flex-direction: column; transition: box-shadow .2s;
}
.study-card.correct { box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 45%, transparent), var(--shadow); }
.study-card.wrong { animation: shake .35s; box-shadow: 0 0 0 3px color-mix(in srgb, var(--danger) 45%, transparent), var(--shadow); }
@keyframes shake { 0%,100% { transform: translateX(0); } 20% { transform: translateX(-7px); } 45% { transform: translateX(6px); } 70% { transform: translateX(-3px); } }
.card-kicker { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 11px; color: var(--text-3); letter-spacing: .4px; }
.card-prompt { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 12px 0 18px; }
.big-word { font-size: var(--word-size); font-weight: 700; letter-spacing: .5px; line-height: 1.1; word-break: break-word; }
.phonetic { color: var(--text-2); font-size: 15px; margin-top: 8px; letter-spacing: .5px; }
.speak-btn { border: 0; background: var(--brand-soft); color: var(--brand); width: 38px; height: 38px; border-radius: 50%; font-size: 17px; margin-left: 8px; vertical-align: middle; }
.prompt-sentence { font-size: calc(20px * var(--font-scale)); line-height: 1.7; max-width: 680px; color: var(--text); }
.prompt-sentence .blank { display: inline-block; min-width: 90px; border-bottom: 2px solid var(--brand); color: var(--brand); }
.options { display: grid; gap: 10px; margin-top: 4px; }
.option {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; padding: 13px 16px;
  border: 1px solid var(--border); background: var(--surface-2); border-radius: 12px; font-size: 15px; transition: .15s;
}
.option:hover { border-color: var(--brand); background: var(--brand-soft); }
.option .key { width: 24px; height: 24px; border-radius: 7px; border: 1px solid var(--border); background: var(--surface); display: inline-flex; align-items: center; justify-content: center; font-size: 12px; color: var(--text-3); flex: 0 0 24px; }
.option.correct { border-color: var(--success); background: var(--success-soft); }
.option.correct .key { background: var(--success); border-color: var(--success); color: #fff; }
.option.wrong { border-color: var(--danger); background: var(--danger-soft); }
.option.wrong .key { background: var(--danger); border-color: var(--danger); color: #fff; }
.option.dim { opacity: .55; }
.spell-input { width: 100%; max-width: 420px; padding: 13px 16px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface-2); font-size: 20px; letter-spacing: 1px; text-align: center; }
.spell-input:focus { border-color: var(--brand); outline: none; }

.answer-panel { border-top: 1px dashed var(--border); padding-top: 16px; margin-top: 6px; }
.answer-panel h3 { margin: 0 0 4px; font-size: 22px; }
.answer-panel .meanings { font-size: 16px; color: var(--text-2); }
.answer-panel .pos { color: var(--brand); font-size: 12px; margin-right: 4px; }
.example-box { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 14px; color: var(--text-2); margin-top: 8px; }
.example-box b { color: var(--text); }
.badge-src { font-size: 10px; color: var(--text-3); border: 1px solid var(--border); border-radius: 999px; padding: 1px 6px; margin-left: 6px; vertical-align: 1px; }

.card-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.card-foot .grow { flex: 1; }
.kbd { border: 1px solid var(--border); border-bottom-width: 2px; background: var(--surface-2); border-radius: 6px; padding: 0 6px; font-size: 11px; color: var(--text-3); }

.result-screen { text-align: center; padding: 40px 20px; }
.result-screen .score { font-size: 56px; font-weight: 800; color: var(--brand); line-height: 1.1; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 520px; margin: 24px auto; }
.result-grid div { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 12px; }
.result-grid b { display: block; font-size: 22px; }
.result-grid span { font-size: 11px; color: var(--text-3); }

/* ---------- 真题 ---------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .grow { flex: 1; }
.select, .input {
  padding: 8px 12px; border: 1px solid var(--border); background: var(--surface); border-radius: 9px; font-size: 13px; min-width: 0;
}
.input:focus, .select:focus, textarea:focus { border-color: var(--brand); outline: none; }
.search { position: relative; flex: 1; min-width: 200px; }
.search input { width: 100%; padding-left: 34px; }
.search::before { content: "⌕"; position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-3); }

.exam-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.exam-card { padding: 16px; display: flex; flex-direction: column; gap: 8px; transition: .18s; cursor: pointer; }
.exam-card:hover { transform: translateY(-2px); border-color: var(--brand); box-shadow: var(--shadow); }
.exam-card h3 { margin: 0; font-size: 14px; line-height: 1.5; }
.exam-card .meta { font-size: 11px; color: var(--text-3); display: flex; gap: 8px; flex-wrap: wrap; }
.exam-card .go { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }

.question-list { display: flex; flex-direction: column; gap: 12px; }
.q-item { border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; background: var(--surface); }
.q-item .q-head { display: flex; align-items: center; gap: 10px; font-size: 11px; color: var(--text-3); margin-bottom: 6px; }
.q-no { min-width: 26px; height: 24px; border-radius: 7px; background: var(--brand-soft); color: var(--brand); font-weight: 700; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; }
.q-stem { font-size: 15px; line-height: 1.7; margin-bottom: 8px; }
.q-options { display: grid; gap: 8px; }
.q-option { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-2); font-size: 14px; text-align: left; width: 100%; }
.q-option:hover { border-color: var(--brand); }
.q-option.correct { border-color: var(--success); background: var(--success-soft); }
.q-option.wrong { border-color: var(--danger); background: var(--danger-soft); }
.q-option.picked { border-color: var(--brand); background: var(--brand-soft); }
.q-option .key { font-weight: 700; color: var(--text-3); font-size: 12px; padding-top: 2px; }
.q-option.correct .key { color: var(--success); }
.q-option.wrong .key { color: var(--danger); }
.q-explain { margin-top: 10px; border-top: 1px dashed var(--border); padding-top: 10px; font-size: 13px; color: var(--text-2); }
.q-explain .ans-line { color: var(--success); font-weight: 600; }
.kp-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.chip { border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2); border-radius: 999px; padding: 2px 9px; font-size: 11px; }
.chip:hover { border-color: var(--brand); color: var(--brand); }

.passage { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; margin-bottom: 14px; }
.passage h4 { margin: 0 0 8px; font-size: 14px; }
.passage p { margin: 0 0 8px; font-size: 14px; line-height: 1.85; color: var(--text-2); }

.exam-run-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.exam-run-head .grow { flex: 1; }
.timer { font-variant-numeric: tabular-nums; font-size: 20px; font-weight: 700; color: var(--brand); }
.timer.low { color: var(--danger); }
.paper-nav { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0; }
.paper-nav button { width: 34px; height: 30px; border-radius: 7px; border: 1px solid var(--border); background: var(--surface-2); font-size: 11px; color: var(--text-2); }
.paper-nav button.done { background: var(--brand-soft); border-color: var(--brand); color: var(--brand); }
.paper-nav button.cur { outline: 2px solid var(--brand); }

.lookup-word { cursor: pointer; border-radius: 3px; }
.lookup-word:hover { background: var(--brand-soft); color: var(--brand); }
.lookup-word.hit { background: var(--warn-soft); }

/* ---------- 词库 ---------- */
.vlist-wrap { position: relative; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); overflow: hidden; }
.vlist-head, .vrow { display: grid; grid-template-columns: 1.4fr 1fr 90px 110px 72px; gap: 10px; align-items: center; padding: 10px 16px; }
.vlist-head { font-size: 11px; color: var(--text-3); background: var(--surface-2); border-bottom: 1px solid var(--border); }
.vlist { height: 560px; overflow-y: auto; position: relative; }
.vlist-inner { position: relative; }
.vrow { position: absolute; left: 0; right: 0; height: 52px; border-bottom: 1px solid var(--border); font-size: 14px; cursor: pointer; }
.vrow:hover { background: var(--brand-soft); }
.vrow .lemma { font-weight: 600; display: flex; align-items: center; gap: 8px; }
.vrow .lemma small { font-weight: 400; color: var(--text-3); font-size: 11px; }
.vrow .cn { color: var(--text-2); font-size: 13px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.vrow .hits { font-size: 12px; color: var(--text-3); }
.vrow .mastery-cell { display: flex; align-items: center; gap: 6px; }
.vrow .mastery-cell .bar { flex: 1; height: 6px; }
.mastery-num { font-size: 11px; color: var(--text-3); width: 26px; text-align: right; }
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-bar .select { font-size: 12px; padding: 6px 10px; }

/* ---------- 抽屉 / 弹层 ---------- */
.drawer-mask { position: fixed; inset: 0; background: rgba(10, 20, 34, .42); z-index: 60; display: flex; justify-content: flex-end; animation: fade .18s; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.drawer {
  width: min(520px, 96vw); background: var(--surface); height: 100%; overflow-y: auto; padding: 22px 24px 40px;
  box-shadow: -12px 0 40px rgba(0,0,0,.18); animation: slideIn .22s ease-out;
}
@keyframes slideIn { from { transform: translateX(30px); opacity: .6; } to { transform: none; opacity: 1; } }
.drawer-head { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; }
.drawer-head .grow { flex: 1; }
.drawer-head h2 { margin: 0; font-size: 30px; letter-spacing: .4px; }
.drawer-close { margin-left: auto; }
.drawer-section { border-top: 1px dashed var(--border); padding-top: 14px; margin-top: 16px; }
.drawer-section h3 { margin: 0 0 8px; font-size: 13px; color: var(--text-3); font-weight: 600; letter-spacing: .4px; }
.sense { display: flex; gap: 8px; padding: 4px 0; font-size: 15px; }
.sense .pos { color: var(--brand); font-size: 12px; min-width: 34px; padding-top: 3px; }
.sent-list { display: flex; flex-direction: column; gap: 8px; }
.sent { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 13px; line-height: 1.7; }
.sent b { color: var(--brand); }
.sent .cn { color: var(--text-3); font-size: 12px; margin-top: 2px; }
.sent .src { font-size: 10px; color: var(--text-3); margin-top: 4px; display: flex; gap: 6px; align-items: center; }
.src-badge { border: 1px solid var(--border); border-radius: 999px; padding: 0 6px; }

.popover {
  position: fixed; z-index: 70; width: 260px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow); padding: 12px 14px; font-size: 13px;
}
.popover .pw { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 6px; }
.popover .pm { color: var(--text-2); margin: 4px 0 8px; font-size: 13px; }
.popover .pact { display: flex; gap: 6px; }
.toast-root { position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 80; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast { background: #22303f; color: #fff; border-radius: 10px; padding: 9px 16px; font-size: 13px; box-shadow: var(--shadow); animation: toastIn .2s; }
.toast.ok { background: var(--success); }
.toast.err { background: var(--danger); }
@keyframes toastIn { from { transform: translateY(8px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- 导入 ---------- */
.dropzone {
  border: 2px dashed var(--border); border-radius: 16px; padding: 40px 20px; text-align: center; background: var(--surface-2);
  transition: .18s; cursor: pointer;
}
.dropzone:hover, .dropzone.drag { border-color: var(--brand); background: var(--brand-soft); }
.dropzone .dz-ic { font-size: 34px; display: block; margin-bottom: 8px; color: var(--brand); }
.file-list { display: flex; flex-direction: column; gap: 8px; }
.file-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font-size: 13px; background: var(--surface); }
.file-item .grow { flex: 1; min-width: 0; }
.file-item strong { display: block; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-item small { color: var(--text-3); }
.preview-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.preview-table th, .preview-table td { border: 1px solid var(--border); padding: 6px 8px; text-align: left; vertical-align: top; }
.preview-table th { background: var(--surface-2); color: var(--text-3); font-weight: 500; }
.report { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--text-2); }
.report b { color: var(--text); }

/* ---------- 看板 ---------- */
.heatmap { display: grid; grid-auto-flow: column; gap: 4px; grid-template-rows: repeat(7, 14px); overflow-x: auto; padding-bottom: 4px; }
.hm-cell { width: 14px; height: 14px; border-radius: 3px; background: var(--surface-2); border: 1px solid var(--border); }
.hm-cell.l1 { background: #cfe6ff; border-color: #cfe6ff; }
.hm-cell.l2 { background: #9dcbfa; border-color: #9dcbfa; }
.hm-cell.l3 { background: #5fa8f5; border-color: #5fa8f5; }
.hm-cell.l4 { background: #3572b0; border-color: #3572b0; }
[data-theme="dark"] .hm-cell.l1 { background: #1e3a57; border-color: #1e3a57; }
[data-theme="dark"] .hm-cell.l2 { background: #2a5a85; border-color: #2a5a85; }
[data-theme="dark"] .hm-cell.l3 { background: #3f86c9; border-color: #3f86c9; }
[data-theme="dark"] .hm-cell.l4 { background: #6fb3ec; border-color: #6fb3ec; }
.hm-legend { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-3); margin-top: 8px; }
svg.chart { width: 100%; height: auto; display: block; }
.wtag { display: flex; align-items: center; gap: 10px; padding: 7px 0; font-size: 13px; }
.wtag .bar { flex: 1; }

/* ---------- 设置 ---------- */
.set-row { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px dashed var(--border); flex-wrap: wrap; }
.set-row .grow { flex: 1 1 160px; min-width: 0; }
.set-row:last-child { border-bottom: 0; }
.set-row .grow { flex: 1; }
.set-row strong { display: block; font-size: 14px; }
.set-row small { color: var(--text-3); }
.switch { width: 44px; height: 24px; border-radius: 999px; background: var(--border); border: 0; position: relative; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: .2s; }
.switch.on { background: var(--brand); }
.switch.on::after { left: 23px; }
.range { width: 160px; }
.danger-zone { border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }

/* ---------- 移动端 ---------- */
.tabbar { display: none; }
@media (max-width: 900px) {
  .g3, .g4, .exam-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quick { grid-template-columns: repeat(2, 1fr); }
  .vlist-head, .vrow { grid-template-columns: 1.5fr 1fr 72px; }
  .vrow .hits, .vrow .mastery-cell, .vlist-head .h5, .vlist-head .h4 { display: none; }
}
@media (max-width: 768px) {
  :root { --word-size: 38px; --side-width: 0px; }
  .sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; width: 248px; z-index: 55; transform: translateX(-102%);
    transition: transform .22s; box-shadow: var(--shadow); height: 100vh;
  }
  .sidebar.open { transform: none; }
  .menu-btn { display: inline-flex; }
  .topbar { padding: 12px 14px; }
  .top-title h1 { font-size: 17px; }
  .top-title p { display: none; }
  .view { padding: 16px 14px 90px; }
  .g2, .g3, .g4, .exam-grid { grid-template-columns: 1fr; }
  .quick { grid-template-columns: repeat(2, 1fr); }
  .study-card { padding: 22px 18px; min-height: 400px; border-radius: 18px; }
  .pill { padding: 4px 9px; font-size: 11px; }
  .tabbar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: var(--surface); border-top: 1px solid var(--border); padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tabbar a { flex: 1; text-align: center; font-size: 10px; color: var(--text-3); display: flex; flex-direction: column; gap: 2px; padding: 4px; }
  .tabbar a span { font-size: 17px; }
  .tabbar a.active { color: var(--brand); }
  .vlist { height: 60vh; }
  .vlist-head, .vrow { grid-template-columns: 1.4fr 1fr 60px; padding: 8px 10px; }
  .drawer { width: 100vw; }
  .copyright { display: none; }
  .timer { font-size: 17px; }
}

/* ---------- 四六级专区 ---------- */
.cet-tabs {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px;
  background: var(--surface-2); border: 1px solid var(--border); padding: 5px; border-radius: 12px;
}
.cet-tab {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 9px;
  font-size: 12.5px; color: var(--text-2); text-decoration: none; transition: .15s;
}
.cet-tab span { opacity: .65; }
.cet-tab:hover { color: var(--brand); }
.cet-tab.active { background: var(--surface); color: var(--brand); font-weight: 600; box-shadow: var(--shadow-sm); }

.cet-hero { margin-bottom: 16px; }
.cet-quick { margin: 16px 0; }
.cet-stats { margin-bottom: 16px; }
.cet-tip h3 { margin: 0 0 6px; font-size: 15px; }
.cet-tip p { margin: 0; }

.cet-paper-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.cet-paper { border: 1px solid var(--border); border-radius: 12px; padding: 12px; background: var(--surface-2); }
.cet-paper strong { font-size: 13px; line-height: 1.5; }

.cet-split { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 16px; align-items: start; }
.cet-side { position: sticky; top: 12px; }
.cet-side-filter { margin: 8px 0 10px; }
.cet-track-list { display: flex; flex-direction: column; gap: 6px; max-height: 64vh; overflow: auto; padding-right: 2px; }
.cet-track {
  text-align: left; border: 1px solid var(--border); background: var(--surface); border-radius: 10px;
  padding: 8px 10px; display: flex; flex-direction: column; gap: 2px; cursor: pointer; transition: .15s;
}
.cet-track:hover { border-color: var(--brand); }
.cet-track b { font-size: 12.5px; font-weight: 600; }
.cet-track span { font-size: 11.5px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cet-track.active { border-color: var(--brand); background: var(--brand-soft); }
.cet-track-year { font-size: 11px; color: var(--text-3); margin: 8px 0 2px; letter-spacing: .5px; }

.cet-player audio { width: 100%; margin: 6px 0 10px; }
.cet-player-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.cet-zh-toggle { display: inline-flex; align-items: center; gap: 6px; }
.cet-src { margin: 12px 0 0; }
.cet-lines { max-height: 62vh; overflow: auto; padding-right: 4px; }
.cet-group h4 {
  font-size: 12px; color: var(--brand); margin: 16px 0 6px; position: sticky; top: 0;
  background: var(--surface); padding: 4px 0;
}
.cet-line { padding: 7px 10px; border-radius: 8px; margin-bottom: 4px; }
.cet-line:hover { background: var(--surface-2); }
.cet-line .en { margin: 0; font-size: 13.5px; line-height: 1.75; }
.cet-line .zh { margin: 2px 0 0; font-size: 12.5px; color: var(--text-3); }
.cet-lines.hide-zh .cet-line .zh { display: none; }

.cet-words { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.cet-word {
  text-align: left; background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; cursor: pointer; transition: .15s;
}
.cet-word:hover { border-color: var(--brand); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.cet-word-head { display: flex; align-items: center; gap: 8px; }
.cet-word-head strong { font-size: 15.5px; }
.cet-word-head .ph { font-size: 12px; color: var(--text-3); }
.cet-word-def { font-size: 12.5px; color: var(--text-2); margin: 6px 0; line-height: 1.65; }
.cet-word-def i { color: var(--brand); font-style: normal; }
.cet-word-foot { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.cet-more { text-align: center; margin-top: 14px; }

.cet-passage p { margin: 0 0 10px; font-size: 13.5px; line-height: 1.9; }
.cet-prompt {
  background: var(--surface-2); border: 1px solid var(--border); border-left: 3px solid var(--brand);
  border-radius: 10px; padding: 12px 14px; font-size: 13px; line-height: 1.8;
}
.cet-sub-title { font-size: 13px; color: var(--text-3); margin: 16px 0 6px; display: flex; justify-content: space-between; align-items: center; }
.cet-draft { width: 100%; resize: vertical; line-height: 1.7; font-size: 13.5px; }

.cet-phrase {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr) auto;
  gap: 10px; padding: 7px 8px; border-bottom: 1px dashed var(--border); font-size: 12.5px; align-items: center;
}
.cet-phrase .cn { color: var(--text-2); }
.cet-phrase .en { color: var(--text); font-weight: 600; }

.cet-acc details { border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px; background: var(--surface-2); }
.cet-acc summary { cursor: pointer; padding: 10px 12px; font-size: 13px; font-weight: 600; }
.cet-acc details[open] summary { border-bottom: 1px dashed var(--border); }
.cet-acc details > *:not(summary) { padding: 8px 12px; margin: 0; }
.cet-acc .cet-gram-sub h4 { font-size: 12.5px; color: var(--brand); margin: 10px 0 4px; }
.cet-acc .cet-gram-sub p { font-size: 12.5px; line-height: 1.8; color: var(--text-2); margin: 0 0 4px; }
.cet-acc .cet-line { padding: 4px 0; }
.cet-acc .en { font-size: 13px; }
.cet-acc .zh { font-size: 12px; color: var(--text-3); }

@media (max-width: 900px) {
  .cet-split { grid-template-columns: 1fr; }
  .cet-side { position: static; }
  .cet-words { grid-template-columns: 1fr; }
  .cet-paper-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  .cet-tabs { flex-wrap: nowrap; overflow-x: auto; }
  .cet-tab { white-space: nowrap; }
  .cet-track-list { max-height: 40vh; }
  .cet-lines { max-height: none; }
  .cet-paper-grid { grid-template-columns: 1fr; }
  .cet-phrase { grid-template-columns: 1fr; gap: 3px; }
}

/* ---------- 俄语专区（占位） ---------- */
.ru-tabs {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px;
  background: var(--surface-2); border: 1px solid var(--border); padding: 5px; border-radius: 12px;
}
.ru-tab {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 9px;
  font-size: 12.5px; color: var(--text-2); text-decoration: none; transition: .15s;
}
.ru-tab span { opacity: .65; }
.ru-tab:hover { color: var(--brand); }
.ru-tab.active { background: var(--surface); color: var(--brand); font-weight: 600; box-shadow: var(--shadow-sm); }

.ru-note { margin-bottom: 16px; }
.ru-note h2 { margin: 0; }
/* 俄语文本统一走西里尔字体栈，避免重音符号回退成方块 */
.ru-text { font-family: var(--font-ru); }

.ru-words { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ru-word { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.ru-word-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.ru-lemma { font-size: 22px; font-weight: 700; line-height: 1.3; letter-spacing: .4px; word-break: break-word; }
.ru-def { margin: 0; font-size: 13px; color: var(--text-2); line-height: 1.7; }
.ru-def i { color: var(--brand); font-style: normal; }
.ru-word-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: auto; }

.ru-sent-list { display: flex; flex-direction: column; gap: 10px; }
.ru-sent { border: 1px solid var(--border); background: var(--surface-2); border-radius: 12px; padding: 12px 14px; }
.ru-orig { margin: 0; font-size: calc(17px * var(--font-scale)); line-height: 1.7; word-break: break-word; }
.ru-zh { margin: 4px 0 0; font-size: 13px; color: var(--text-3); }
.ru-sent-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 10px; }

.ru-exams { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.ru-exam { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.ru-exam-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.ru-exam-head h3 { margin: 0; font-size: 17px; word-break: break-word; }
.ru-name { margin: 0; line-height: 1.6; word-break: break-word; }
.ru-desc { margin: 0; font-size: 13px; color: var(--text-2); line-height: 1.7; }
.ru-exam-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: auto; padding-top: 4px; }

/* 禁用态：原生 disabled，点击不会触发任何逻辑，同时保留可见的「暂未开放」提示 */
.btn.ru-off, .btn.ru-off[disabled] {
  opacity: .62; cursor: not-allowed; border-style: dashed;
  background: var(--surface-2); color: var(--text-3); pointer-events: auto;
}
.btn.ru-off:hover { border-color: var(--border); }

/* 学习路径：纵向可滚动的六级卡片列表 */
.ru-path-list {
  display: flex; flex-direction: column; gap: 14px;
  max-height: 74vh; overflow-y: auto; overscroll-behavior: contain; padding-right: 4px;
}
.ru-path-card { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.ru-path-head { display: flex; align-items: flex-start; gap: 12px; flex-wrap: wrap; min-width: 0; }
.ru-level-badge {
  flex: 0 0 46px; width: 46px; height: 46px; border-radius: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--brand-soft); color: var(--brand); font-size: 17px; font-weight: 800; letter-spacing: .5px;
}
.ru-path-name { flex: 1; min-width: 0; }
.ru-path-name h3 { margin: 0; font-size: 16px; line-height: 1.45; word-break: break-word; }
.ru-path-name p { margin: 2px 0 0; word-break: break-word; }
.ru-prio { font-weight: 600; white-space: nowrap; }
.ru-prio.p0 { color: var(--brand); border-color: color-mix(in srgb, var(--brand) 40%, var(--border)); background: var(--brand-soft); }
.ru-prio.p1 { color: var(--success); border-color: color-mix(in srgb, var(--success) 40%, var(--border)); background: var(--success-soft); }
.ru-prio.p2 { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); background: var(--warn-soft); }
.ru-prio.p3 { color: var(--text-3); background: var(--surface-2); }
.ru-path-ability { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--text-2); }
.ru-path-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ru-path-meta .small { line-height: 1.5; }
.ru-path-note { margin: 0; line-height: 1.6; }

.ru-grammar { border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2); overflow: hidden; }
.ru-grammar summary { cursor: pointer; padding: 9px 12px; font-size: 12.5px; font-weight: 600; }
.ru-grammar[open] summary { border-bottom: 1px dashed var(--border); }
.ru-grammar .ru-chips { padding: 10px 12px; }
.ru-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.ru-chips .chip { border-radius: 8px; padding: 4px 9px; line-height: 1.5; white-space: normal; word-break: break-word; }
.ru-path-label { margin: 0 0 6px; font-size: 12.5px; color: var(--text-3); font-weight: 600; }
.ru-milestones { display: flex; flex-direction: column; gap: 6px; }
.ru-milestone { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text-2); line-height: 1.6; cursor: pointer; }
.ru-milestone input { flex: 0 0 auto; margin: 3px 0 0; accent-color: var(--brand); }
.ru-milestone span { min-width: 0; word-break: break-word; }
.ru-path-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: auto; padding-top: 4px; }

@media (max-width: 900px) {
  .ru-exams { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .ru-tabs { flex-wrap: nowrap; overflow-x: auto; }
  .ru-tab { white-space: nowrap; }
  .ru-words { grid-template-columns: 1fr; }
  .ru-path-list { max-height: none; overflow: visible; padding-right: 0; }
  .ru-level-badge { flex-basis: 40px; width: 40px; height: 40px; font-size: 15px; }
  .ru-path-card { padding: 16px; }
  .ru-path-head { gap: 8px; }
}

/* ---------- 跟读练习 ---------- */
.sp-wrap { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
.sp-card { padding: 18px 22px 24px; }
.sp-top { display: flex; align-items: center; gap: 10px; }
.sp-dots { display: flex; gap: 6px; margin: 0 auto; font-size: 15px; color: var(--text-3); }
.sp-dot { min-width: 24px; text-align: center; line-height: 1.4; }
.sp-dot.cur { color: var(--brand); font-weight: 700; }
.sp-dot.pass { color: var(--success); }
.sp-dot.fail { color: var(--danger); }
.sp-dot.self, .sp-dot.skip { color: var(--text-2); }
.sp-zh.active { color: var(--brand); border-color: var(--brand); background: var(--brand-soft); }
.sp-star[aria-pressed="true"] { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); }
.sp-meta { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12px; color: var(--text-3); margin: 10px 0 14px; }
.sp-meta .grow { flex: 1; min-width: 8px; }
.sp-src { border: 1px solid var(--border); border-radius: 999px; padding: 0 8px; color: var(--text-2); }
.sp-sentence {
  font-size: clamp(20px, 2.6vw, 28px); line-height: 1.7; letter-spacing: .2px;
  margin: 6px 0 18px; word-break: break-word;
}
.sp-sentence b, .sp-target { color: var(--brand); }
.sp-hit { color: var(--success); }
.sp-miss { color: var(--danger); text-decoration: underline wavy; text-underline-offset: 4px; }
.sp-wrong { color: var(--warn); }
.sp-demo { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); }
.sp-tip { font-size: 11px; color: var(--text-3); }
.sp-mic-zone { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 20px 0 4px; }
.sp-recording { flex-direction: row; justify-content: center; flex-wrap: wrap; padding: 22px 0; }
.sp-mic { min-width: 200px; min-height: 52px; border-radius: 999px; font-size: 15px; font-weight: 600; }
.sp-dot-live { width: 12px; height: 12px; border-radius: 50%; background: var(--danger); animation: sp-pulse 1.1s infinite; flex: 0 0 12px; }
@keyframes sp-pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .3; transform: scale(.72); } }
.sp-time { font-variant-numeric: tabular-nums; font-size: 15px; letter-spacing: .5px; }
.sp-inline { font-size: 13px; color: var(--text-2); margin: 0; text-align: center; }
.sp-inline.err { color: var(--danger); }
.sp-scoring { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 10px 0; color: var(--text-2); font-size: 14px; }
.sp-result { padding-top: 12px; }
.sp-score { font-size: 15px; margin: 0 0 6px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.sp-score b { font-size: 30px; line-height: 1; }
.sp-heard { font-size: 13px; color: var(--text-2); margin: 0 0 6px; line-height: 1.7; }
.sp-extra { font-size: 12px; color: var(--warn); margin: 0 0 10px; }
.sp-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.sp-self { color: var(--success); font-size: 15px; margin: 0 0 8px; }
.sp-cn { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: 13px; color: var(--text-2); line-height: 1.7; }
.sp-blocked { padding: 8px 0 0; }
.sp-block-text { font-size: 14px; margin: 0 0 10px; line-height: 1.8; }
.sp-finish { text-align: center; padding: 14px 0 4px; }
.sp-finish .sp-big { font-size: 44px; font-weight: 700; line-height: 1.1; }
.sp-finish .sp-actions { justify-content: center; }
.sp-worst { text-align: left; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px; margin: 14px 0 0; }
.sp-worst p { margin: 4px 0 0; font-size: 13px; line-height: 1.7; }
.sp-foot { text-align: center; font-size: 12px; color: var(--text-3); margin: 0; }
.sp-consent h3 { margin: 0 0 8px; }
.sp-consent p { margin: 0 0 18px; line-height: 1.9; }
.sp-line-btn { display: inline-block; font-size: 11px; color: var(--text-3); padding: 8px 0 2px; min-height: 28px; }
.sp-line-btn:hover { color: var(--brand); }
@media (max-width: 768px) {
  .sp-card { padding: 14px 16px 20px; }
  .sp-sentence { font-size: clamp(19px, 5vw, 24px); line-height: 1.65; }
  .sp-mic { width: 100%; }
  .sp-dots { gap: 3px; font-size: 14px; }
  .sp-top .icon-btn, .sp-zh { min-width: 44px; min-height: 44px; }
}

/* ---------- 每日任务（首页） ---------- */
.pl-tasks { display: flex; flex-direction: column; gap: 10px; }
.pl-task {
  display: flex; align-items: center; gap: 12px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2);
}
.pl-task-main { flex: 1; min-width: 0; }
.pl-task-main strong { display: block; font-size: 14px; }
.pl-task-main small { display: block; color: var(--text-3); font-size: 11px; line-height: 1.5; }
.pl-ring {
  position: relative; flex: 0 0 42px; width: 42px; height: 42px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: conic-gradient(var(--brand) calc(var(--p, 0) * 1%), var(--border) 0);
}
.pl-ring::before { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: var(--surface); }
.pl-ring b { position: relative; font-size: 12px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.pl-task.done { border-color: color-mix(in srgb, var(--success) 40%, var(--border)); }
.pl-task.done .pl-ring { background: conic-gradient(var(--success) 100%, var(--border) 0); }
.pl-task.done .pl-ring b { color: var(--success); }
.pl-note { margin: 12px 0 0; }

/* ---------- 每日一句 ---------- */
.pl-line-en { font-size: 18px; line-height: 1.65; margin: 0 0 10px; word-break: break-word; }
.pl-line-en b { color: var(--brand); }
.pl-line-cn {
  font-size: 13px; color: var(--text-2); line-height: 1.8; margin: 0 0 12px;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
}
.pl-line-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pl-line-foot .grow { flex: 1; min-width: 8px; }
.pl-line-foot .src-badge { font-size: 11px; color: var(--text-2); }
.pl-line-word { margin-top: 12px; padding: 10px 12px; border: 1px dashed var(--border); border-radius: 10px; }
.pl-line-word-top { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.pl-line-word-top b { font-size: 15px; }
.pl-line-word p { margin: 4px 0 0; line-height: 1.6; }
.pl-line-tip { margin: 10px 0 0; }

/* ---------- 成就页 ---------- */
.ac-sum-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.ac-sum-num b { font-size: 38px; line-height: 1; }
.ac-sum-num span { color: var(--text-3); font-size: 13px; margin-left: 4px; }
.ac-sum-xp { display: flex; align-items: center; gap: 10px; }
.ac-rank-name { font-size: 18px; color: var(--brand); letter-spacing: .5px; }
.ac-sum-note { margin: 8px 0 14px; }
.ac-ranks { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.ac-rank {
  border: 1px solid var(--border); background: var(--surface-2); border-radius: 12px;
  padding: 8px 10px; text-align: center; opacity: .55;
}
.ac-rank b { display: block; font-size: 12px; }
.ac-rank small { font-size: 10px; color: var(--text-3); }
.ac-rank.got { opacity: 1; border-color: color-mix(in srgb, var(--brand) 35%, var(--border)); }
.ac-rank.cur {
  border-color: var(--brand); background: var(--brand-soft); color: var(--brand);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand) 20%, transparent);
}
.ac-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.ac-item { display: flex; gap: 12px; padding: 16px; }
.ac-item.is-locked { opacity: .62; }
.ac-mark {
  flex: 0 0 34px; width: 34px; height: 34px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text-3); font-size: 17px;
}
.ac-item.is-unlocked .ac-mark {
  color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, var(--border)); background: var(--warn-soft);
}
.ac-body { flex: 1; min-width: 0; }
.ac-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ac-head strong { font-size: 14px; }
.ac-desc { font-size: 12px; color: var(--text-3); margin: 4px 0 10px; line-height: 1.6; min-height: 38px; }
.ac-bar { height: 6px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; overflow: hidden; }
.ac-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), #6fc0a8); }
.ac-item.is-unlocked .ac-bar i { background: var(--success); }
.ac-nums {
  display: flex; justify-content: space-between; font-size: 11px; color: var(--text-3);
  margin-top: 6px; font-variant-numeric: tabular-nums;
}
@media (max-width: 900px) {
  .ac-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 768px) {
  .ac-grid { grid-template-columns: 1fr; }
  .ac-ranks { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ac-sum-num b { font-size: 30px; }
  .pl-line-en { font-size: 16px; }
  .pl-task-main small { font-size: 10px; }
  .top-actions .pill-rank-wrap { display: none; }
}


/* ============================================================
   批次 4：翻面自评 / 整句朗读 / 句子收藏 / 能力雷达 / 首访引导
   ============================================================ */
.flip-word { animation: flipIn .18s ease-out; }
@keyframes flipIn {
  from { opacity: .35; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}
.flip-hint { margin-top: 16px; font-size: 13px; }
.flip-meanings { font-size: 16px; color: var(--text-2); margin-top: 10px; line-height: 1.7; }
.flip-divider { height: 1px; background: var(--border); margin: 14px 0; }
.flip-acts { display: flex; gap: 12px; margin-top: 18px; }
.flip-acts .btn { flex: 1; padding: 14px 10px; font-size: 15px; }
.flip-no { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

.sent .src { flex-wrap: wrap; }
.sent .src .grow { flex: 1; }
.sent-tool {
  border: 1px solid var(--border); background: var(--surface); color: var(--text-3);
  border-radius: 999px; padding: 2px 8px; font-size: 10px; line-height: 1.5;
  cursor: pointer; white-space: nowrap;
}
.sent-tool:hover { color: var(--text); border-color: var(--brand); }
.sent-bm { font-size: 12px; padding: 1px 7px; }
.sent-bm.on { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, var(--border)); }

.rd-wrap { text-align: center; }
.rd-svg { display: block; width: 100%; max-width: 360px; margin: 0 auto; }
.rd-note { margin: 12px 0 0; line-height: 1.8; text-align: left; }
.rd-empty { padding: 24px 10px; }

.ob-card { max-height: 88vh; overflow: auto; }
.ob-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.ob-title { margin: 6px 0 4px; font-size: 22px; }
.ob-desc { margin: 0 0 16px; line-height: 1.7; }
.ob-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.ob-opt {
  display: flex; flex-direction: column; gap: 2px; align-items: flex-start;
  padding: 14px 16px; border-radius: 14px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; text-align: left;
}
.ob-opt b { font-size: 17px; }
.ob-opt span { font-size: 12px; color: var(--text-3); }
.ob-opt:hover { border-color: var(--brand); }
.ob-opt.on { border-color: var(--brand); background: var(--brand-soft); box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand) 30%, transparent); }
.ob-dots { display: flex; gap: 6px; justify-content: center; margin-top: 18px; }
.ob-dots span { width: 22px; height: 3px; border-radius: 999px; background: var(--border); }
.ob-dots span.on { background: var(--brand); }

.sp-saved-list { display: flex; flex-direction: column; gap: 10px; }
.sp-saved-row { display: flex; flex-direction: column; gap: 8px; }
.sp-saved-row .sent { width: 100%; }
.sp-saved-row .sent-bm { display: none; }
.sp-saved-acts { display: flex; gap: 8px; justify-content: flex-end; }

@media (max-width: 768px) {
  .flip-acts { flex-direction: column-reverse; }
  .ob-grid { grid-template-columns: 1fr; }
  .rd-svg { max-width: 100%; }
  .sp-saved-acts { justify-content: flex-start; }
}

/* ---------- 命令面板 Ctrl+K ---------- */
.cmdk-mask {
  position: fixed; inset: 0; z-index: 60;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 12vh 16px 16px; background: rgba(10, 18, 28, .45);
}
.cmdk {
  width: min(560px, 94vw); max-height: 70vh; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; box-shadow: var(--shadow); overflow: hidden;
}
.cmdk-input {
  width: 100%; border: 0; border-bottom: 1px solid var(--border);
  background: transparent; padding: 14px 16px; font-size: 15px; outline: none;
}
.cmdk-list { padding: 6px; overflow: auto; }
.cmdk-empty { margin: 0; padding: 18px 12px; text-align: center; font-size: 13px; color: var(--text-3); }
.cmdk-item {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 9px 10px; border: 0; border-radius: 9px; background: transparent; text-align: left;
}
.cmdk-item:hover, .cmdk-item.active { background: var(--brand-soft); }
.cmdk-kind {
  flex: 0 0 auto; font-size: 11px; padding: 1px 7px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-3);
}
.cmdk-main { display: flex; flex-direction: column; min-width: 0; }
.cmdk-main b { font-size: 14px; }
.cmdk-main small { font-size: 12px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 768px) {
  .cmdk-mask { padding: 8vh 10px 10px; }
}

/* ---------- 快捷键帮助 `?` ---------- */
.kbd-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.kbd-list li { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.kbd-list li .kbd { min-width: 58px; text-align: center; }

/* ---------- 数据自检 #/health ---------- */
.health-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.health-card.ok b { color: var(--success); }
.health-card.warn b { color: var(--warn); }
.health-card.idle b { color: var(--text-3); }
.health-detail { border-top: 1px solid var(--border); padding: 10px 0; }
.health-detail:first-of-type { border-top: 0; }
.health-detail summary { display: flex; align-items: center; gap: 8px; cursor: pointer; list-style: none; }
.health-detail summary::-webkit-details-marker { display: none; }
.health-dot { flex: 0 0 8px; width: 8px; height: 8px; border-radius: 50%; }
.health-dot.ok { background: var(--success); }
.health-dot.warn { background: var(--warn); }
.health-dot.idle { background: var(--text-3); }
.health-samples { margin: 8px 0 0; padding-left: 18px; font-size: 12px; color: var(--text-2); }

/* ---------- 答题速度 ---------- */
.spd-row { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.spd-label { flex: 0 0 88px; font-size: 13px; }
.spd-bar { flex: 1 1 auto; }
.spd-val { flex: 0 0 auto; font-size: 12px; text-align: right; }
.spd-note { margin: 12px 0 0; line-height: 1.8; }
@media (max-width: 768px) {
  .spd-row { flex-wrap: wrap; }
  .spd-label { flex: 0 0 72px; }
  .spd-val { flex: 1 1 100%; text-align: left; }
}

/* ---------- 我的档案 ---------- */
.profile-pill { display: inline-flex; align-items: center; gap: 7px; padding: 4px 11px 4px 5px; max-width: 190px; }
.profile-pill .pp-avatar {
  width: 22px; height: 22px; border-radius: 50%; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; background: var(--brand);
}
.profile-pill .pp-name { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; color: var(--text-2); }
.pf-hero-main { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.pf-hero h2 { margin: 0 0 4px; font-size: 20px; }
.pf-avatar {
  width: 44px; height: 44px; border-radius: 14px; flex: 0 0 auto;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 22px; color: #fff; background: var(--brand); box-shadow: var(--shadow-sm);
}
.pf-avatar.lg { width: 58px; height: 58px; border-radius: 18px; font-size: 30px; }
.pf-stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px;
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--border);
}
.pf-stats div { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 0; }
.pf-stats b { font-size: 18px; }
.pf-stats span { font-size: 11px; color: var(--text-3); }
.pf-grid { align-items: stretch; }
.pf-card { display: flex; flex-direction: column; min-width: 0; }
.pf-card.is-active { border-color: color-mix(in srgb, var(--brand) 45%, var(--border)); }
.pf-top { display: flex; align-items: center; gap: 12px; min-width: 0; }
.pf-top .grow { flex: 1; min-width: 0; }
.pf-top strong { display: block; font-size: 16px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-top small { display: block; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-meta { display: flex; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--text-3); margin: 12px 0 4px; }
.pf-actions { margin-top: auto; padding-top: 12px; gap: 8px; align-items: center; }
.pf-label { display: block; font-size: 12px; color: var(--text-3); margin: 12px 0 6px; }
.pf-form .input { width: 100%; }
.pf-form.is-disabled { opacity: .55; }
.pf-emoji-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.pf-emoji {
  width: 38px; height: 38px; border-radius: 10px; font-size: 19px;
  border: 1px solid var(--border); background: var(--surface-2);
}
.pf-emoji.on { border-color: var(--brand); background: var(--brand-soft); box-shadow: 0 0 0 2px color-mix(in srgb, var(--brand) 35%, transparent); }
.pf-color-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pf-color { width: 28px; height: 28px; border-radius: 50%; border: 2px solid transparent; padding: 0; }
.pf-color.on { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--brand); }
.pf-err { min-height: 18px; margin: 8px 0 0; font-size: 12px; color: var(--danger); }
.pf-err:not(.show) { visibility: hidden; }
.pf-create .kp-chips { display: flex; flex-wrap: wrap; gap: 6px; }
@media (max-width: 768px) {
  .pf-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profile-pill { max-width: 132px; }
  .profile-pill .pp-name { max-width: 70px; }
  .pf-hero h2 { font-size: 18px; }
}
@media (max-width: 560px) {
  /* 顶栏窄屏只留档案与主题按钮，避免横向溢出 */
  .top-actions .pill:not(.profile-pill) { display: none; }
}

/* ---------- 真填空题（学习页 cloze / 真题 banked·blank） ---------- */
.fill-box { width: 100%; }
.fill-input {
  max-width: 520px; text-align: left; letter-spacing: 0; font-size: 18px;
  transition: border-color .15s, background .15s;
}
.fill-input.correct { border-color: var(--success); background: var(--success-soft); }
.fill-input.near { border-color: var(--warn); background: var(--warn-soft); }
.fill-input.wrong { border-color: var(--danger); background: var(--danger-soft); }
.fill-input.revealed { color: var(--text-2); }
.fill-input:disabled { opacity: .94; cursor: default; }
.fill-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; }
.fill-row .fill-input { flex: 1 1 220px; min-width: 0; max-width: 520px; }
.fill-hint { margin: 6px 0 0; }
.fill-bank { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 2px; }
.fill-bank .chip b { color: var(--text-3); margin-right: 4px; }
@media (max-width: 768px) {
  .fill-input { font-size: 16px; }
  .fill-row .btn { width: 100%; }
}

/* ---------- 句子听写 ---------- */
.dict-wrap { display: flex; flex-direction: column; gap: 16px; }
.dict-card { min-width: 0; }
.dict-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 10px 0 14px; }
.dict-controls .grow { flex: 1; min-width: 8px; }
.dict-prompt { margin: 0 0 10px; }
.dict-no { display: inline-block; font-size: 12px; color: var(--brand); background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 35%, var(--border)); border-radius: 999px; padding: 2px 10px; }
.dict-input-row { display: flex; gap: 8px; align-items: stretch; flex-wrap: wrap; }
.dict-input { flex: 1 1 320px; min-width: 0; min-height: 64px; resize: vertical; line-height: 1.7; }
.dict-result { margin-top: 16px; border-top: 1px dashed var(--border); padding-top: 14px; }
.dict-result-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.dict-score { font-size: 30px; font-weight: 700; line-height: 1; }
.dict-score small { font-size: 12px; color: var(--text-3); font-weight: 400; }
.dict-sentence { margin: 12px 0 0; font-size: 17px; line-height: 2; word-break: break-word; }
.dict-word.hit { color: var(--success); }
.dict-word.wrong { color: var(--warn); text-decoration: underline dotted; text-underline-offset: 3px; }
.dict-word.miss { color: var(--danger); text-decoration: underline wavy; text-underline-offset: 3px; }
.dict-extra { margin: 10px 0 0; color: var(--warn); font-size: 13px; }
.dict-written { margin: 8px 0 0; word-break: break-word; }
.dict-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; font-size: 11px; color: var(--text-3); }
.dict-legend span { display: inline-flex; align-items: center; gap: 5px; }
.dict-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dict-dot.hit { background: var(--success); }
.dict-dot.wrong { background: var(--warn); }
.dict-dot.miss { background: var(--danger); }
.dict-dot.extra { background: var(--text-3); }
.dict-help p { margin: 0; line-height: 1.9; }
@media (max-width: 768px) {
  .dict-controls .btn { flex: 1 1 auto; }
  .dict-input-row .btn { width: 100%; }
  .dict-sentence { font-size: 15px; line-height: 1.9; }
}

/* ---------- 文章课程 / 阅读器 ---------- */
.ar-wrap { display: flex; flex-direction: column; gap: 16px; }
.ar-form-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.ar-form-row .grow { flex: 1; min-width: 0; }
.ar-textarea { width: 100%; min-height: 140px; resize: vertical; line-height: 1.7; }
.ar-pdf-msg { margin-top: 8px; border-radius: 10px; padding: 9px 12px; font-size: 12.5px; line-height: 1.7; border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2); }
.ar-pdf-msg.ok { border-color: color-mix(in srgb, var(--success) 40%, var(--border)); background: var(--success-soft); color: var(--success); }
.ar-pdf-msg.err { border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: var(--danger-soft); color: var(--danger); white-space: pre-line; }
.ar-row { display: flex; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px dashed var(--border); }
.ar-row:last-child { border-bottom: 0; }
.ar-row-main { flex: 1; min-width: 0; }
.ar-row-main strong { display: block; font-size: 15px; word-break: break-word; }
.ar-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 12px; color: var(--text-3); margin-top: 4px; }
.ar-row-acts { display: flex; gap: 6px; flex-wrap: wrap; }
.ar-head h2 { margin: 0 0 6px; font-size: 20px; word-break: break-word; }
.ar-reader { padding: 18px 20px; }
.ar-body { font-size: 15px; line-height: 1.9; }
.ar-para { margin-bottom: 14px; }
.ar-line { margin: 0 0 12px; }
.ar-en { margin: 0; word-break: break-word; }
.ar-cn { margin: 5px 0 0; font-size: 12.5px; color: var(--text-3); line-height: 1.7; word-break: break-word; }
.ar-nozh { color: var(--text-3); opacity: .75; }
.ar-body.hide-cn .ar-cn { display: none; }
.ar-speaker {
  display: inline-block; font-size: 11px; font-weight: 600; color: var(--brand);
  background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 30%, var(--border));
  border-radius: 6px; padding: 0 6px; margin-right: 6px; vertical-align: 1px;
}
.ar-body .lookup-word.unknown {
  color: var(--warn); border-bottom: 1px dashed color-mix(in srgb, var(--warn) 55%, transparent);
  background: transparent;
}
.ar-body .lookup-word.unknown:hover { background: var(--warn-soft); color: var(--warn); }
@media (max-width: 768px) {
  .ar-row { flex-direction: column; align-items: stretch; gap: 8px; }
  .ar-row-acts .btn { flex: 1; }
  .ar-reader { padding: 14px; }
  .ar-body { font-size: 14px; }
  .ar-form-row .btn { width: 100%; }
}

/* ---------- 词典反查 ---------- */
.dict-search-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.dict-search-row .input { flex: 1 1 260px; min-width: 0; }
.dict-sugs { margin-top: 10px; }
.dict-list { display: flex; flex-direction: column; gap: 14px; }
.dict-card { min-width: 0; }
.dict-head { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.dict-head h3 { margin: 0; font-size: 22px; line-height: 1.3; word-break: break-word; }
.dict-phon { margin: 2px 0 0; color: var(--text-3); font-size: 13px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.dict-acts { display: flex; gap: 6px; flex-wrap: wrap; }
.dict-meanings { margin-top: 10px; }
.dict-meanings .sense { display: flex; gap: 8px; font-size: 14px; line-height: 1.8; }
.dict-meanings .sense .pos { color: var(--text-3); min-width: 34px; }
.dict-meanings mark { background: var(--brand-soft); color: var(--brand); border-radius: 4px; padding: 0 2px; }
.dict-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.dict-metric { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); padding: 10px 12px; min-width: 0; }
.dict-metric-label { font-size: 12px; color: var(--text-3); }
.dict-metric-value { display: flex; align-items: baseline; gap: 4px; margin: 2px 0 4px; }
.dict-metric-value b { font-size: 24px; line-height: 1.1; }
.dict-metric-value span { font-size: 12px; color: var(--text-3); }
.dict-metric small { display: block; font-size: 11px; color: var(--text-3); line-height: 1.5; }
.dict-section { margin-top: 14px; border-top: 1px dashed var(--border); padding-top: 12px; }
.dict-section h4, .dict-etym h4 { margin: 0 0 8px; font-size: 13px; color: var(--text-2); }
.dict-cols { display: flex; flex-wrap: wrap; gap: 6px; }
.dict-col { cursor: pointer; }
.dict-col b { color: var(--text-3); font-weight: 500; }
.dict-note { margin: 8px 0 0; font-size: 11px; color: var(--text-3); }
.dict-sents { display: flex; flex-direction: column; gap: 8px; }
.dict-sent { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; }
.dict-sent-en { margin: 0; font-size: 14px; line-height: 1.7; word-break: break-word; }
.dict-sent-cn { margin: 4px 0 0; font-size: 12px; color: var(--text-3); line-height: 1.6; word-break: break-word; }
.dict-etym { margin-top: 10px; border: 1px dashed var(--border); border-radius: 10px; padding: 10px 12px; background: var(--surface); }
.dict-etym-none { margin: 0 0 4px; font-weight: 600; color: var(--text-2); font-size: 13px; }
.dict-etym p:last-child { margin: 0; line-height: 1.7; }
@media (max-width: 768px) {
  .dict-search-row .btn { width: 100%; }
  .dict-metrics { grid-template-columns: 1fr; }
  .dict-head h3 { font-size: 19px; }
  .dict-acts .btn { flex: 1; }
}
@media (max-width: 400px) {
  .dict-head { gap: 8px; }
  .dict-acts { width: 100%; }
  .dict-metric-value b { font-size: 21px; }
}

/* ---------- 句子排序 ---------- */
.ord-wrap { display: flex; flex-direction: column; gap: 16px; }
.ord-card { min-width: 0; }
.ord-slot {
  min-height: 96px; border: 1px dashed var(--border); border-radius: 12px; background: var(--surface-2);
  padding: 10px; display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start; transition: border-color .15s, background .15s;
}
.ord-slot.empty { align-items: center; }
.ord-slot.drag-over, .ord-bank.drag-over { border-color: var(--brand); background: var(--brand-soft); }
.ord-placeholder { color: var(--text-3); font-size: 13px; padding: 6px 4px; }
.ord-bank {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; padding: 10px;
  border: 1px dashed var(--border); border-radius: 12px; background: var(--surface); min-height: 52px; align-content: flex-start;
}
.ord-bank.empty { align-items: center; }
.ord-chip {
  display: inline-flex; align-items: center; gap: 2px; max-width: 100%; word-break: break-word;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  border-radius: 9px; padding: 7px 12px; font-size: 15px; line-height: 1.25; cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}
.ord-chip:hover { border-color: var(--brand); background: var(--brand-soft); }
.ord-chip:active { transform: translateY(1px); }
.ord-chip.dragging { opacity: .55; }
.ord-chip.placed { background: var(--surface); border-color: color-mix(in srgb, var(--brand) 35%, var(--border)); }
.ord-chip.placed:hover { border-color: var(--brand); }
.ord-chip.ok { background: var(--success-soft); border-color: var(--success); color: var(--success); }
.ord-chip.bad { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.ord-chip:disabled { cursor: default; opacity: 1; }
.ord-chip:disabled.placed { pointer-events: none; }
.ord-no { font-size: 10px; color: var(--text-3); margin-right: 3px; }
.ord-mark { margin-left: 4px; font-weight: 700; }
.ord-actions { align-items: center; }
.ord-result { margin-top: 16px; border-top: 1px dashed var(--border); padding-top: 14px; }
.ord-verdict { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ord-verdict strong { font-size: 26px; line-height: 1; }
.ord-verdict small { font-size: 12px; color: var(--text-3); font-weight: 400; }
.ord-correct { margin: 10px 0 0; font-size: 16px; line-height: 1.8; word-break: break-word; }
.ord-correct b { color: var(--text); }
@media (max-width: 768px) {
  .ord-chip { font-size: 14px; padding: 7px 10px; }
  .ord-slot { min-height: 80px; padding: 8px; }
  .ord-actions .btn { flex: 1 1 auto; }
  .ord-verdict strong { font-size: 22px; }
}
@media (max-width: 400px) {
  .ord-chip { font-size: 13px; padding: 6px 8px; }
  .ord-actions .btn { flex: 1 1 100%; }
}

/* ---------- 打印 ---------- */
.print-paper { display: none; }
@media print {
  html, [data-theme="dark"] {
    --brand: #2a66a3;
    --brand-soft: #eef4fb;
    --success: #1e7a45;
    --success-soft: #eaf7f0;
    --danger: #a52a1e;
    --danger-soft: #fdecea;
    --warn: #8a5a00;
    --warn-soft: #fdf5e6;
    --bg: #fff;
    --surface: #fff;
    --surface-2: #fff;
    --border: #cfd6de;
    --text: #111;
    --text-2: #333;
    --text-3: #555;
    --shadow: none;
    --shadow-sm: none;
  }
  body { background: #fff !important; color: #111; font-size: 11.5pt; }
  .sidebar, .topbar, .tabbar, .toast-root, #drawer-root, #pop-root, .copyright, .boot { display: none !important; }
  .shell { display: block !important; }
  .workspace { margin: 0 !important; }
  .view { padding: 0 !important; max-width: none !important; }
  body.printing-paper #shell { display: none !important; }
  .card { box-shadow: none !important; border: 1px solid #ddd !important; }
  .question, .exam-row, .sent, .card, .pq, .pp-passage { break-inside: avoid; }
  a[href]::after { content: ""; }
  body:not(.print-with-answer) .q-explain { display: none !important; }
  .print-paper { display: block !important; }
  .print-paper h1 { font-size: 18pt; margin: 0 0 4pt; }
  .pp-meta { margin: 0 0 10pt; font-size: 10pt; color: #555; }
  .pp-sec { margin: 12pt 0 6pt; padding-bottom: 2pt; font-size: 12pt; border-bottom: 1px solid #bbb; }
  .pq { margin: 0 0 8pt; }
  .pq-head { display: flex; align-items: baseline; gap: 6pt; }
  .pp-type { font-size: 9pt; color: #666; }
  .pq-stem { margin: 2pt 0 3pt; }
  .pq-opts { margin: 0 0 2pt 12pt; }
  .pp-opt { margin: 1pt 0; }
  .pq-blank { margin: 2pt 0 0 12pt; }
  .pq .q-explain { margin-top: 2pt; font-size: 10pt; }
}