:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --border: #e3e1da;
  --text: #2c2c2a;
  --text-2: #5f5e5a;
  --text-3: #888780;
  --accent: #0f6e56;
  --accent-weak: #e1f5ee;
  --accent-deep: #085041;
  --warn: #a32d2d;
  --warn-weak: #fcebeb;
  --info: #185fa5;
  --info-weak: #e6f1fb;
  --amber: #854f0b;
  --amber-weak: #faeeda;
  --radius: 12px;
  --radius-s: 8px;
  /* v1.19 UI 精修 tokens */
  --shadow-s: 0 1px 2px rgba(22, 44, 37, 0.04), 0 1px 1px rgba(22, 44, 37, 0.03);
  --shadow-m: 0 2px 4px rgba(22, 44, 37, 0.05), 0 10px 26px -14px rgba(22, 44, 37, 0.18);
  --focus-ring: 0 0 0 3px rgba(15, 110, 86, 0.16);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --muted-line: 1px solid var(--border);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
::selection { background: var(--accent-weak); color: var(--accent-deep); }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: 6px; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(22, 44, 37, 0.02);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: 860px; margin: 0 auto; padding: 11px 20px;
  display: flex; align-items: center; gap: 11px;
}
.logo-mark {
  color: var(--accent-deep); display: flex;
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(150deg, var(--accent-weak), #d3ece3);
  align-items: center; justify-content: center; flex-shrink: 0;
}
.app-title { font-weight: 600; font-size: 16px; letter-spacing: .2px; }
.header-tag {
  margin-left: auto; font-size: 11.5px; color: var(--text-2);
  border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px;
  background: var(--bg); white-space: nowrap;
}
.primary-nav { display: flex; align-items: center; gap: 4px; margin-left: 2px; }
.primary-nav-btn { border: 0; background: transparent; color: var(--text-3); cursor: pointer; padding: 5px 8px; border-radius: 7px; font: inherit; font-size: 12px; }
.primary-nav-btn:hover, .primary-nav-btn.active { color: var(--accent-deep); background: var(--accent-weak); }
.app-main { flex: 1; width: 100%; max-width: 860px; margin: 0 auto; padding: 22px 20px 28px; }
.app-footer {
  border-top: 1px solid var(--border); color: var(--text-3);
  font-size: 12px; text-align: center; padding: 14px 20px;
}

.view { display: none; }
.view.active { display: block; }

/* 首页 */
.mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.mode-card {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 20px 18px 22px; cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
  box-shadow: var(--shadow-s);
}
.mode-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--accent), #2f9c7e);
}
.mode-card:hover {
  border-color: #bfd9d0; transform: translateY(-2px);
  box-shadow: var(--shadow-m);
}
.mode-head { display: flex; align-items: center; gap: 10px; color: var(--accent-deep); }
.mode-head svg {
  width: 32px; height: 32px; padding: 6px; flex-shrink: 0;
  background: var(--accent-weak); border-radius: 9px;
  color: var(--accent-deep);
  transition: background .18s var(--ease), color .18s var(--ease);
}
.mode-card:hover .mode-head svg { background: var(--accent); color: #fff; }
.mode-head h2 { font-size: 17px; font-weight: 600; }
.mode-desc { font-size: 13.5px; color: var(--text-2); margin: 10px 0 8px; line-height: 1.65; }
.mode-meta { list-style: none; font-size: 13px; color: var(--text-3); }
.mode-meta li { padding: 2.5px 0; }
.mode-meta li::before { content: "·"; margin-right: 7px; color: var(--accent); font-weight: 700; }
.quick-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 14px; }
.quick-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 15px 14px; cursor: pointer;
  display: flex; flex-direction: column; gap: 5px;
  box-shadow: var(--shadow-s);
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), border-color .18s var(--ease);
}
.quick-card:hover { border-color: #bfd9d0; transform: translateY(-1px); box-shadow: var(--shadow-m); }
.quick-title {
  font-weight: 600; font-size: 14px; color: var(--accent-deep);
  display: flex; align-items: center; gap: 8px;
}
.quick-title::before {
  content: ""; width: 8px; height: 8px; border-radius: 2.5px;
  background: linear-gradient(135deg, var(--accent), #2f9c7e); flex-shrink: 0;
}
.quick-sub { font-size: 12px; color: var(--text-2); }
.selftest-entry { display: flex; align-items: center; gap: 10px; margin-top: 9px; padding: 12px 13px; border: 1px solid #b9ded2; border-radius: 10px; background: linear-gradient(135deg, #eefaf6, #fbfdfc); cursor: pointer; box-shadow: var(--shadow-s); transition: transform .16s var(--ease), box-shadow .16s var(--ease); }
.selftest-entry:hover { transform: translateY(-1px); box-shadow: var(--shadow-m); }
.selftest-entry-ico { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border-radius: 9px; background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; }
.selftest-entry-txt { min-width: 0; color: var(--accent-deep); font-size: 13px; line-height: 1.4; }
.selftest-entry-txt b { margin-right: 8px; }
.selftest-entry-txt span { color: var(--text-2); font-size: 11.5px; }
.selftest-intro { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 14px 15px; border: 1px solid #b9ded2; border-radius: 12px; background: linear-gradient(135deg, #eefaf6, #fbfdfc); }
.selftest-intro h3 { margin: 0 0 5px; color: var(--accent-deep); font-size: 16px; }
.selftest-intro h3 small { margin-left: 6px; color: var(--text-3); font-size: 11px; font-weight: 400; }
.selftest-intro p { margin: 0; color: var(--text-2); font-size: 12px; line-height: 1.55; }
.selftest-section { margin-top: 15px; }
.selftest-section.secondary { padding-top: 13px; border-top: 1px solid var(--border); }
.selftest-section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.selftest-section-head h3 { margin: 0; color: var(--text-2); font-size: 13px; }
.selftest-section-head span { color: var(--text-3); font-size: 11px; }
.selftest-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.core-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.selftest-card { min-width: 0; padding: 12px 13px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); box-shadow: var(--shadow-s); }
.selftest-card.core { border-color: #d1e7df; }
.selftest-card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--accent-deep); font-size: 13px; }
.selftest-card-head b { min-width: 0; }
.selftest-card-head .badge { flex: none; }
.selftest-card-sub { margin-top: 6px; color: var(--text-3); font-size: 11px; }
.selftest-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.selftest-actions .badge { cursor: pointer; }
.selftest-compare { padding: 12px 13px; border: 1px solid #d4e5df; border-radius: 10px; background: #f8fbfa; }
.selftest-compare .btn { margin-top: 3px; }
.skill-exam-timer { margin-left: auto; padding: 3px 8px; border: 1px solid #b9ded2; border-radius: 999px; color: var(--accent-deep); background: var(--accent-weak); font-size: 11px; font-variant-numeric: tabular-nums; }
.skill-exam-head { margin-top: 12px; padding: 15px; border: 1px solid #b9ded2; border-radius: 12px; background: linear-gradient(135deg, #eefaf6, #fbfdfc); }
.skill-exam-head h3 { margin-top: 4px; color: var(--accent-deep); font-size: 16px; }
.skill-exam-head p { margin-top: 5px; color: var(--text-2); font-size: 13px; line-height: 1.6; }
.skill-exam-score { margin-top: 10px; color: var(--text-3); font-size: 12px; }
.skill-exam-rate { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.skill-pass { border-color: #b9ded2; background: var(--accent-weak); }
.skill-fail { border-color: #e8c5c5; background: var(--warn-weak); }

/* 视图头 */
.view-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.view-head h2 { font-size: 17px; font-weight: 600; }
.btn-back {
  border: 1px solid var(--border); background: var(--surface);
  border-radius: 999px; padding: 5px 15px; font-size: 13px; cursor: pointer; color: var(--text-2);
  transition: border-color .14s var(--ease), color .14s var(--ease), background .14s var(--ease);
}
.btn-back:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-weak); }

/* 科目与章节 */
.subject-list, .chapter-list { display: flex; flex-direction: column; gap: 10px; }
.subject-item, .chapter-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; cursor: pointer;
  display: flex; align-items: center; gap: 12px;
  box-shadow: var(--shadow-s);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease), border-color .16s var(--ease);
}
.subject-item:hover, .chapter-item:hover { border-color: #bfd9d0; transform: translateY(-1px); box-shadow: var(--shadow-m); }
.subject-name { font-weight: 600; }
.subject-info { margin-left: auto; font-size: 12px; color: var(--text-3); }
.badge {
  font-size: 12px; border-radius: 999px; padding: 1.5px 10px;
  background: var(--accent-weak); color: var(--accent-deep);
  font-weight: 500; white-space: nowrap;
  transition: background .15s var(--ease), color .15s var(--ease);
}
.badge.gray { background: var(--bg); color: var(--text-3); }
.badge.accent { background: var(--accent); color: #fff; }
.skill-entry:hover .badge, .entry-card:hover .badge,
.subject-item:hover .badge, .chapter-item:hover .badge,
.paper-item:hover .badge { background: var(--accent); color: #fff; }
.chapter-item .sub { font-size: 12px; color: var(--text-3); }

/* 卷选择 */
.papers-note { font-size: 12px; color: var(--text-3); margin-bottom: 12px; }
.paper-list { display: flex; flex-direction: column; gap: 10px; }
.paper-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; cursor: pointer;
  display: flex; align-items: center; gap: 12px;
}
.paper-item:hover { border-color: var(--accent); }
.paper-item.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, #fbfdfc, var(--surface));
  box-shadow: 0 1px 0 rgba(15, 110, 86, 0.08);
}
.paper-item.featured .paper-name { color: var(--accent-deep); }
.paper-info { display: flex; flex-direction: column; gap: 6px; }
.paper-name { font-weight: 500; }
.paper-tags { font-size: 12px; color: var(--text-3); }
.paper-meta { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }

/* 刷题 */
.quiz-top {
  display: flex; align-items: center; gap: 12px; margin-bottom: 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 7px 10px; box-shadow: var(--shadow-s);
}
.quiz-top .btn-back { border: none; background: var(--bg); }
.quiz-progress { font-size: 13.5px; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; }
.quiz-progress small { font-weight: 400; color: var(--text-3); margin-left: 6px; }
.quiz-timer {
  margin-left: auto; font-size: 14.5px; font-weight: 600; color: var(--info);
  font-variant-numeric: tabular-nums;
  background: var(--info-weak); border-radius: 999px; padding: 2px 12px;
}
.quiz-timer.warn { color: var(--warn); background: var(--warn-weak); }
.type-banner {
  background: var(--amber-weak); color: var(--amber);
  font-size: 13px; border-radius: 10px; padding: 9px 14px; margin-bottom: 12px;
  border: 1px solid #ecd9b4; line-height: 1.6;
}
.quiz-body {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 22px 20px;
  box-shadow: var(--shadow-s);
}
.q-type-tag {
  display: inline-block; font-size: 11.5px; padding: 2px 11px; border-radius: 999px;
  background: var(--info-weak); color: var(--info); margin-bottom: 12px;
  font-weight: 600; letter-spacing: .4px;
}
.q-stem { font-size: 15.5px; margin-bottom: 16px; line-height: 1.8; color: var(--text); }
.q-stem .group-stem {
  color: var(--text-2); font-size: 14px; display: block; margin-bottom: 12px;
  padding-bottom: 12px; border-bottom: 1px dashed var(--border);
  background: var(--bg); border-radius: 8px; padding: 10px 14px;
}
.q-options { display: flex; flex-direction: column; gap: 9px; }
.q-opt {
  border: 1px solid var(--border); border-radius: 10px;
  padding: 11px 14px; cursor: pointer; display: flex; gap: 11px; align-items: flex-start;
  transition: border-color .12s var(--ease), background .12s var(--ease), box-shadow .12s var(--ease);
}
.q-opt:hover { border-color: var(--accent); background: #fbfdfc; }
.q-opt.selected { border-color: var(--accent); background: var(--accent-weak); box-shadow: inset 3px 0 0 var(--accent); }
.q-opt.correct { border-color: var(--accent); background: var(--accent-weak); box-shadow: inset 3px 0 0 var(--accent); }
.q-opt.wrong { border-color: var(--warn); background: var(--warn-weak); box-shadow: inset 3px 0 0 var(--warn); }
.q-opt .opt-letter {
  width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12.5px; font-weight: 600; color: var(--text-2);
  background: var(--bg); border: 1px solid var(--border);
  transition: background .12s var(--ease), color .12s var(--ease), border-color .12s var(--ease);
}
.q-opt .opt-check {
  width: 22px; height: 22px; border-radius: 6px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
  background: var(--bg); border: 1px solid var(--border);
}
.q-opt.selected .opt-check { background: var(--accent); border-color: var(--accent); }
.selftest-multi .selftest-intro { margin-bottom: 9px; }
.selftest-multi .selftest-intro h3 { margin-bottom: 3px; }
.q-opt.selected .opt-letter, .q-opt.correct .opt-letter { background: var(--accent); border-color: var(--accent); color: #fff; }
.q-opt.wrong .opt-letter { background: var(--warn); border-color: var(--warn); color: #fff; }
.q-explain {
  margin-top: 16px; padding: 13px 14px 13px 16px; border-radius: 10px;
  background: #faf9f5; font-size: 13.5px; color: var(--text-2);
  border: 1px solid #ebe8e0; box-shadow: inset 3px 0 0 var(--accent); line-height: 1.75;
}
.q-explain .exp-title { font-weight: 600; color: var(--accent-deep); margin-bottom: 5px; font-size: 13.5px; }
.quiz-actions { display: flex; gap: 10px; margin-top: 18px; justify-content: center; }
.btn {
  border: none; border-radius: 10px; padding: 10px 28px; font-size: 14.5px; cursor: pointer;
  font-weight: 500; transition: transform .14s var(--ease), box-shadow .14s var(--ease),
    background .14s var(--ease), border-color .14s var(--ease), color .14s var(--ease);
}
.btn:active { transform: translateY(0) !important; }
.btn-primary {
  background: linear-gradient(180deg, #14805f, #0d644d); color: #fff;
  box-shadow: 0 1px 2px rgba(15, 110, 86, 0.3);
}
.btn-primary:hover { background: linear-gradient(180deg, #0d6f52, #0a563f); transform: translateY(-1px); box-shadow: 0 3px 10px -2px rgba(15, 110, 86, 0.4); }
.btn-primary:disabled { background: var(--border); color: var(--text-3); cursor: not-allowed; box-shadow: none; transform: none; }
.btn-ghost { background: var(--surface); border: 1px solid var(--border); color: var(--text-2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-weak); }

/* 结果 */
.result-body { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 6px; }
.score-big { font-size: 34px; font-weight: 500; color: var(--accent-deep); }
.score-sub { color: var(--text-2); font-size: 13px; margin-bottom: 14px; }
.result-row { display: flex; gap: 20px; flex-wrap: wrap; font-size: 13px; color: var(--text-2); padding: 4px 0; justify-content: space-between; }
.result-sub { font-size: 12px; color: var(--text-3); margin-bottom: 6px; }
.result-sec { margin-top: 16px; }
.result-sec-title { font-size: 13px; font-weight: 500; margin-bottom: 8px; color: var(--text-1); }
.result-block { margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--border); }
.rb-title {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 14.5px; color: var(--text); margin-bottom: 8px;
}
.rb-title::before {
  content: ""; width: 3px; height: 14px; border-radius: 2px;
  background: var(--accent); flex-shrink: 0;
}
.grade-badge {
  display: inline-block; color: #fff; font-size: 12px;
  border-radius: 999px; padding: 1px 10px;
}

/* 错题本 */
.wrongbook-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin-bottom: 10px;
}
.wrongbook-item .q-stem { font-size: 14px; }
.wrong-empty { text-align: center; color: var(--text-3); padding: 40px 0; }

/* 统计 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 14px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 14px 14px; text-align: center;
  box-shadow: var(--shadow-s);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease);
}
.stat-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-m); }
.stat-num { font-size: 27px; font-weight: 700; color: var(--accent-deep); font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat-label { font-size: 12px; color: var(--text-3); margin-top: 4px; }
.stats-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-s); }
.stats-table th, .stats-table td { padding: 10px 14px; text-align: left; font-size: 13px; border-bottom: 1px solid var(--border); }
.stats-table th { background: #f2f0ea; color: var(--text-2); font-weight: 600; }
.stats-table tbody tr { transition: background .12s; }
.stats-table tbody tr:hover { background: #f8f6f1; }
.stats-table tr:last-child td { border-bottom: none; }
.stats-table tbody tr:last-child td:first-child { border-radius: 0 0 0 10px; }
.stats-table tbody tr:last-child td:last-child { border-radius: 0 0 10px 0; }

@media (max-width: 640px) {
  .app-main { padding: 14px 12px 22px; }
  .header-inner { flex-wrap: wrap; padding: 9px 12px; }
  .header-tag { display: none; }
  .primary-nav { order: 3; width: 100%; margin: 4px 0 0; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 7px; }
  .primary-nav-btn { flex: 1; padding: 7px 4px; }
  .mode-grid, .quick-row, .stat-grid { grid-template-columns: 1fr; }
  .selftest-entry { align-items: flex-start; }
  .selftest-entry-txt b { display: block; margin: 0 0 2px; }
  .selftest-grid { grid-template-columns: 1fr; }
  .selftest-intro { display: block; }
  .selftest-intro .badge { display: inline-flex; margin-top: 9px; }
  .selftest-section-head { display: block; }
  .selftest-section-head span { display: block; margin-top: 3px; }
}

/* ===== 统计看板 v2（v1.11）===== */
.dash-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 12px; margin-bottom: 14px; }
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 14px;
  box-shadow: var(--shadow-s);
}
.panel .rb-title { margin-bottom: 10px; }
.panel + .dash-grid { margin-top: 0; }
.dash-grid .panel { margin-bottom: 0; }
.empty-tip {
  font-size: 13px; color: var(--text-3); padding: 26px 16px; line-height: 1.8;
  text-align: center; border: 1px dashed var(--border); border-radius: 10px;
  background: #fbfaf7;
}
.data-note { font-size: 12px; color: var(--text-3); margin-bottom: 12px; line-height: 1.8; }
.data-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.data-msg { font-size: 13px; margin-top: 12px; line-height: 1.7; }
.file-btn { cursor: pointer; display: inline-flex; align-items: center; }
/* 错题按科分布条 */
.bar-row { display: flex; align-items: center; gap: 10px; padding: 7px 6px; cursor: pointer; border-radius: 8px; transition: background .12s; }
.bar-row:hover { background: #f4f1ea; }
.bar-row:hover .bar-name { color: var(--accent); }
.bar-name { width: 92px; flex-shrink: 0; font-size: 13px; color: var(--text-2); font-weight: 500; }
.bar-track {
  flex: 1; height: 10px; background: var(--bg);
  border-radius: 999px; overflow: hidden; border: 1px solid var(--border);
}
.bar-fill { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), #2f9c7e); border-radius: 999px; min-width: 2px; }
.bar-num { width: 28px; text-align: right; font-size: 13px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.bar-tip { font-size: 12px; color: var(--text-3); padding-top: 6px; }
/* 错题本科筛选 chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.chip {
  font-size: 12px; border-radius: 999px; padding: 3px 12px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border); color: var(--text-2);
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

@media (max-width: 640px) {
  .dash-grid { grid-template-columns: 1fr; }
  .dash-grid .panel { margin-bottom: 12px; }
  .data-actions .btn { width: 100%; }
}

/* ===== 移动端健壮性（v1.11）===== */
.panel { overflow-x: auto; }
.result-body, .quiz-body { overflow-x: auto; }
.q-stem, .q-opt, .q-explain, .paper-tags { overflow-wrap: anywhere; }
.quiz-body, .result-body { padding: 16px; }
@media (max-width: 480px) {
  .btn { padding: 9px 18px; }
  .quiz-actions .btn { flex: 1; }
  .paper-item { flex-direction: column; align-items: flex-start; }
  .paper-meta { margin-left: 0; justify-content: flex-start; }
  .quiz-top { flex-wrap: wrap; gap: 8px; }
  .quiz-timer { margin-left: 0; }
  .quiz-top .btn-back { order: -1; }
  .q-opt { padding: 10px 12px; }
}

/* ===== 打印友好：成绩报告留档（v1.11）===== */
* { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
@page { size: A4 portrait; margin: 10mm 8mm; }
@media print {
  .app-header, .app-footer, .btn-back, .quiz-actions, .view-head, .chip-row,
  .data-actions, .bar-tip, .mode-card, .quick-row { display: none !important; }
  body { background: #fff; }
  .app-main { max-width: none; padding: 0; }
  .view { display: none !important; }
  .view.active { display: block !important; }
  .result-body, .panel, .quiz-body {
    border: none !important; box-shadow: none !important;
    padding: 0 !important; border-radius: 0 !important;
    background: #fff !important;
  }
  .stats-table, .stats-table th, .stats-table td { border-color: #bbb; }
  .stats-table th { background: #eee !important; }
  .score-big { color: #000 !important; }
  .grade-badge, .badge { border: 1px solid #999; }
  .result-sec, .result-block { page-break-inside: avoid; }
  a[href]:after { content: none; }
}

/* ===== 出师技能训练 v1.12 ===== */
.skill-entry { border: 1px dashed var(--accent); }
.sk-note { font-size: 13px; color: var(--text-2); background: var(--bg-soft, #f7f6f2); border: 1px solid var(--line, var(--border)); border-radius: 8px; padding: 8px 12px; margin-bottom: 12px; line-height: 1.6; }
.sk-ctrl { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.sk-ctrl .btn { margin-left: 2px; }
.sk-qmeta { font-size: 12px; color: var(--text-3); margin-bottom: 8px; }
.sk-qcard { border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; background: var(--card, #fff); margin-bottom: 12px; }
.sk-q { font-size: 15px; line-height: 1.8; color: var(--text); }
.sk-block { margin: 10px 0; }
.sk-h { font-size: 13px; font-weight: 500; color: var(--accent-deep, var(--accent)); margin: 10px 0 6px; }
.sk-ans { margin: 0 0 10px; padding-left: 20px; }
.sk-ans li { font-size: 13.5px; line-height: 1.75; color: var(--text-2); margin-bottom: 4px; }
.sk-angles li { color: var(--text-2); }
.sk-actions { display: flex; gap: 10px; margin: 14px 0; }
.sk-rate { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 14px 0 4px; }
.sk-op { border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px; background: var(--card, #fff); overflow: hidden; }
.sk-op-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; cursor: pointer; }
.sk-op-head b { font-size: 14px; color: var(--text); flex: 1; }
.sk-op-time { font-size: 12px; color: var(--text-3); }
.sk-op-body { padding: 4px 16px 12px; border-top: 1px dashed var(--border); }
.sk-bitem { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; page-break-inside: avoid; }
.sk-browse-hint { font-size: 12px; color: var(--text-3); margin-bottom: 8px; }
.sk-flash { border: 1px solid var(--accent); border-radius: 14px; min-height: 150px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 20px; margin: 8px 0 12px; background: var(--card, #fff); cursor: pointer; }
.sk-flash-name { font-size: 30px; font-weight: 500; color: var(--accent-deep, var(--accent)); letter-spacing: 2px; }
.sk-flash-tip { font-size: 12px; color: var(--text-3); margin-top: 10px; }
.sk-flash .sk-ans { width: 100%; text-align: left; margin-top: 12px; }
.sk-mf { margin-bottom: 14px; }
.sk-mf textarea { width: 100%; box-sizing: border-box; border: 1px solid var(--border); border-radius: 8px; padding: 10px; font-size: 13.5px; line-height: 1.7; background: var(--card, #fff); color: var(--text); resize: vertical; min-height: 72px; font-family: inherit; }
.sk-mf textarea:focus { outline: none; border-color: var(--accent); }
.sk-mhint { font-size: 12px; color: var(--text-3); margin-bottom: 6px; }
.sk-probe { font-size: 12.5px; color: var(--accent-deep, var(--accent)); margin-top: 6px; }
@media print {
  .sk-ctrl, .sk-actions, .sk-rate { display: none !important; }
  .sk-op-body { display: block !important; }
  .sk-op-head .badge { display: none; }
  .sk-op, .sk-bitem, .sk-qcard { page-break-inside: avoid; border: 1px solid #bbb; }
  .sk-q { color: #000; }
}

/* ===== 考点记忆导图 v1.13 ===== */
.mind-sub { font-size: 12.5px; color: var(--text-3); margin: 2px 0 4px; line-height: 1.6; }
.mind-stat { font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.mind-stat b { color: var(--accent-deep, var(--accent)); font-weight: 600; }
.mind-ctrl { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 10px; }
.mind-tree { border: 1px solid var(--border); border-radius: 12px; padding: 10px 8px; background: var(--card, #fff); }
.mind-row { display: flex; align-items: center; gap: 4px; padding: 3px 6px; border-radius: 6px; cursor: pointer; line-height: 1.55; font-size: 14px; color: var(--text); }
.mind-row:hover { background: var(--accent-weak, #f0f5f2); }
.mind-row.lv1 { margin-top: 2px; }
.mind-row.lv1 .md-lb { font-weight: 600; color: var(--accent-deep, var(--accent)); font-size: 14.5px; }
.mind-row.leaf .md-lb { font-weight: 400; }
.md-caret { width: 14px; flex: none; font-size: 11px; color: var(--text-3); text-align: center; }
.md-cnt { font-size: 11px; color: var(--text-3); background: var(--bg-soft, #f3f2ed); border-radius: 999px; padding: 0 7px; flex: none; }
.md-lb { flex: 1; }
.md-st { font-size: 11px; border-radius: 999px; padding: 1px 9px; flex: none; }
.md-熟 { background: var(--accent); color: #fff; }
.md-生 { background: #d97706; color: #fff; }
.mind-kids { margin: 0 0 0 12px; padding-left: 6px; border-left: 1px solid var(--line, var(--border)); }
.mind-leaf { padding: 4px 8px 4px 10px; border-radius: 6px; line-height: 1.5; }
.mind-leaf.lv1 { margin-top: 2px; }
.md-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); display: inline-block; margin-right: 6px; vertical-align: middle; }
.md-hook { display: block; font-size: 12.5px; color: var(--text-2); margin: 1px 0 0 12px; line-height: 1.65; }
.md-diff { display: block; font-size: 12px; color: var(--text-3); margin: 0 0 2px 12px; line-height: 1.55; }
.mind-card { border: 1px solid var(--accent); border-radius: 12px; padding: 12px 14px; margin: 6px 0 6px 14px; background: var(--card, #fff); }
.mc-top { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.mc-top .md-lb { font-size: 15px; font-weight: 600; color: var(--accent-deep, var(--accent)); flex: none; }
.mc-hook { font-size: 13.5px; line-height: 1.75; color: var(--text); margin-bottom: 6px; }
.mc-diff { font-size: 12.5px; color: var(--text-3); line-height: 1.6; margin-bottom: 8px; }
.mc-acts { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.mind-note { width: 100%; box-sizing: border-box; border: 1px dashed var(--border); border-radius: 8px; padding: 8px 10px; font-size: 12.5px; color: var(--text); background: var(--card, #fff); font-family: inherit; }
.mind-note:focus { outline: none; border-color: var(--accent); }
@media print {
  /* v1.18.1 记忆导图打印：隐藏控件、整页 A4 双栏紧凑、避免行级断页 */
  #view-mind .sk-ctrl, #view-mind .mind-ctrl, #view-mind .mc-acts,
  #view-mind .mind-note, #view-mind .md-caret, #view-mind .md-st,
  #view-mind .md-cnt { display: none !important; }
  #view-mind .mind-kids { display: block !important; }
  #view-mind .mind-row, #view-mind .mind-leaf { page-break-inside: avoid; }
  #view-mind .mind-card { page-break-inside: avoid; border: 1px solid #bbb; }
  #view-mind .mind-tree, #view-mind .mind-card { background: #fff !important; }
  #view-mind .md-hook, #view-mind .mc-hook, #view-mind .md-lb { color: #000; }
  /* 紧凑 A4：双栏 + 缩行距 + 减小缩进，降低页数 */
  #view-mind .mind-tree {
    column-count: 2; column-gap: 5mm; border: none; padding: 0;
    border-radius: 0; width: 100%; box-sizing: border-box;
  }
  #view-mind .mind-kids { margin-left: 2mm; padding-left: 0; border-left: none; }
  #view-mind .mind-row { font-size: 9pt; line-height: 1.4; padding: 1px 0; break-inside: avoid; }
  #view-mind .mind-leaf { padding: 1px 0; break-inside: avoid; }
  #view-mind .md-lb { font-size: 9.5pt; }
  #view-mind .mind-row.lv1 .md-lb { font-size: 10.5pt; }
  #view-mind .md-hook { font-size: 8pt; line-height: 1.45; margin-left: 4px; }
  #view-mind .md-diff { font-size: 7.5pt; margin-left: 4px; }
  #view-mind .mind-card { font-size: 9pt; padding: 2mm; margin: 0 0 2mm 1mm; }
  #view-mind .mc-hook { font-size: 8pt; line-height: 1.5; }
  #view-mind .mc-diff { font-size: 7.5pt; }
  #view-mind .mind-head, #view-mind .mind-sub { font-size: 8pt; margin: 0 0 2px; }
}

/* ============ 每日目标与间隔重复 ============ */
/* 首页每日目标条 */
.daily-bar {
  margin-top: 12px; border: 1px solid var(--border); border-radius: 14px;
  padding: 12px 16px; background: var(--surface); box-shadow: var(--shadow-s);
}
.daily-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; font-weight: 600; font-size: 13.5px; color: var(--text); }
.daily-head .badge { font-weight: 500; }
.daily-items { display: flex; gap: 8px; flex-wrap: wrap; }
.daily-item { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--card, #fff); border-radius: 999px; padding: 5px 13px; font-size: 12px; color: var(--text-2); cursor: pointer; font-family: inherit; transition: border-color .12s var(--ease), background .12s var(--ease), color .12s var(--ease); }
.daily-item:hover { border-color: var(--accent); color: var(--accent-deep); }
.daily-item.active { border-color: var(--accent); background: var(--accent); color: #fff; }
.daily-item.active:hover { color: #fff; }
.daily-item .dk-dot { width: 8px; height: 8px; border-radius: 50%; border: 1px solid currentColor; }
.daily-item.active .dk-dot { background: #fff; }
.due-line { margin-top: 8px; font-size: 12px; color: var(--text-3); }
.due-line b, .due-line strong { color: var(--accent-deep); font-weight: 600; }
.md-due { background: #b45309; color: #fff; }
/* ============ 每日联动进度 ============ */
#home-daily-progress { margin-top: 4px; }
/* ============ v1.16 考点精练（同考点换题再战） ============ */
.wrongbook-acts { margin-top: 6px; display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.wrongbook-acts .btn { font-size: 12px; padding: 3px 10px; }
.pt-one { font-size: 11.5px; color: var(--text-3); border: 1px dashed var(--border); border-radius: 6px; padding: 2px 8px; }
/* ============ 新手入门 ============ */
.gs-card { margin-top: 12px; }
.gs-body { margin-top: 8px; display: flex; flex-direction: column; gap: 8px; }
.gs-step { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; background: #fff; }
.gs-no { width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 13px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: 700; }
.gs-txt { font-size: 12.5px; line-height: 1.7; color: var(--text-2); }
.gs-txt b { color: var(--text); font-weight: 600; }
.gs-act { cursor: pointer; font-weight: 600; }
.gs-act:hover { text-decoration: underline; }
@media print {
  #home-recitation, #home-getting-started { display: none !important; }
}

/* ============ v1.17 错因自评 + 记忆可视化 ============ */
.attr-row { display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: center; margin-top: 6px; font-size: 12px; color: var(--text-3); }
.attr-label { color: var(--text-3); }
.attr-chip { border: 1px solid var(--border); border-radius: 20px; padding: 1px 10px; cursor: pointer; font-size: 11.5px; color: var(--text-2); user-select: none; }
.attr-chip:hover { border-color: var(--accent); }
.attr-chip.on { background: var(--accent-weak); border-color: var(--accent); color: var(--accent-deep); font-weight: 600; }
.rb-line { font-size: 13px; margin: 6px 0 2px; }
.rb-sub { font-size: 12px; color: var(--text-2); }
.mem-bar { display: flex; gap: 1px; height: 10px; border-radius: 5px; overflow: hidden; background: var(--border); margin: 6px 0; }
.mem-bar > i { display: block; height: 100%; }
.mem-bar .mk { background: var(--accent); }
.mem-bar .mu { background: #d9a441; }
.mem-bar .md2 { background: #d96a41; }
.mem-bar .mt { background: var(--border); }
.mem-legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 11.5px; color: var(--text-2); margin-bottom: 10px; }
.mem-legend b { color: var(--text); font-weight: 600; }
.due-week { display: flex; align-items: flex-end; gap: 6px; height: 64px; margin: 8px 0 2px; }
.due-bar { flex: 1; background: var(--accent-weak); border-radius: 3px 3px 0 0; position: relative; display: flex; align-items: flex-end; justify-content: center; }
.due-bar i { display: block; width: 100%; background: var(--accent); border-radius: 3px 3px 0 0; }
.due-bar span { position: absolute; top: -16px; font-size: 10px; color: var(--text-2); }
.due-day { font-size: 10.5px; color: var(--text-3); text-align: center; }

/* ============ v1.19 UI 精修（试点：首页/刷题/统计，2026-09-07） ============
   就地升级说明（全部只动 CSS，未改 HTML/JS 结构）：
   1. :root 新增 tokens —— --shadow-s/--shadow-m 阴影层级、--focus-ring 焦点环、
      --ease 缓动曲线、--radius-s、::selection/:focus-visible 全局态
   2. 通用组件 —— 卡片统一 轻阴影 + hover 上浮（mode/subject/chapter/quick/panel/
      stat/quiz/daily-bar）；按钮渐变主色 + 微上浮 + active 按压；badge/chip 三态过渡；
      .btn-back 改 pill；.rb-title 分节标题加墨绿竖条；bar-fill 渐变浓度条；
      .q-opt 选项圆钮字母 + 选中/对/错 inset 色条；解析区 inset 强调
   3. 打印护栏 —— 所有新样式未触碰 @media print 区块；box-shadow 打印默认不输出，
      rb-title 竖条/渐变条依赖 print-color-adjust: exact（已全局开启）
   4. 后续铺开 —— 其余页面（结果/错题本/技能/导图/趋势）沿用同套 tokens，
      若需继续增强以同款语言就地升级
   ============ */

/* ============ v1.20 首页布局重排（2026-09-08） ============ */
.home-hero {
  margin-bottom: 18px; padding: 15px 16px 13px;
  border: 1px solid #b9ded2; border-radius: 14px;
  background: linear-gradient(145deg, #e7f7f2 0%, #d9f0e9 100%);
  box-shadow: var(--shadow-s);
}
.hero-head { display: flex; align-items: center; gap: 8px; color: var(--accent-deep); }
.hero-ico { display: inline-flex; align-items: center; justify-content: center; width: 25px; height: 25px; border-radius: 7px; background: var(--accent); color: #fff; }
.hero-tt { font-size: 15px; font-weight: 600; }
.hero-streak { margin-left: auto; background: #fff; border: 1px solid var(--accent); color: var(--accent-deep); }
.home-hero .daily-items { margin-top: 11px; }
.home-hero .daily-item { background: rgba(255,255,255,.82); border-color: rgba(15,110,86,.12); }
.home-hero .daily-item.active { background: var(--accent); border-color: var(--accent); }
.hero-prog { margin-top: 9px; color: var(--accent-deep); font-size: 12px; font-weight: 500; }
.hero-sub { margin-top: 4px; color: var(--text-2); font-size: 12px; }
.hero-divider { height: 1px; margin: 10px 0 8px; background: rgba(15,110,86,.16); }
.hero-recite { margin-top: 0; }
.hero-recite .daily-head { margin-bottom: 0; color: var(--accent-deep); font-size: 12.5px; }
.home-hero #active-exam-card { margin-top: 12px !important; padding: 9px 11px; background: rgba(255,255,255,.82); border-color: #8bc8b7; box-shadow: none; }
.home-hero #active-exam-card .subject-name { font-size: 12.5px; }
.home-hero #active-exam-card .btn { padding: 5px 12px; font-size: 12px; }
.sec-title {
  display: flex; align-items: center; gap: 8px; margin: 17px 0 8px;
  color: var(--text-2); font-size: 13px; font-weight: 600;
}
.sec-title::before { content: ""; width: 3px; height: 14px; border-radius: 2px; background: var(--accent); }
.mode-grid { gap: 10px; }
.mode-card { padding: 14px 14px 13px 17px; }
.mode-head h2 { font-size: 15px; }
.mode-desc { margin: 7px 0 8px; font-size: 12px; }
.mode-detail { margin-top: 4px; }
.mode-detail summary { color: var(--text-3); cursor: pointer; font-size: 12px; }
.mode-detail summary:hover { color: var(--accent); }
.mode-detail .mode-meta { margin-top: 4px; }
.mode-detail .mode-meta li { padding: 1px 0; font-size: 11.5px; }
.mode-cta {
  display: block; margin-top: 10px; padding: 5px 10px; border-radius: 7px;
  background: var(--accent); color: #fff; text-align: center; font-size: 12px; font-weight: 600;
}
.mode-cta.alt { background: var(--accent-weak); color: var(--accent-deep); }
.quick-row { grid-template-columns: repeat(2, 1fr); gap: 9px; margin-top: 0; }
.quick-card { min-height: 76px; padding: 12px 13px; gap: 3px; }
.qc-ico { width: 24px; height: 24px; display: inline-flex; align-items: center; justify-content: center; color: var(--accent); }
.qc-ico.warn { color: var(--warn); }
.quick-title { gap: 6px; font-size: 13.5px; }
.quick-title::before { display: none; }
.quick-sub { font-size: 11.5px; line-height: 1.45; }
.mini-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.mini-entry {
  min-width: 0; display: flex; align-items: center; gap: 8px; padding: 10px 11px;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface);
  cursor: pointer; box-shadow: var(--shadow-s); transition: transform .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.mini-entry:hover { border-color: #bfd9d0; transform: translateY(-1px); box-shadow: var(--shadow-m); }
.compare-entry {
  display: flex; align-items: center; gap: 9px; margin-top: 9px; padding: 10px 12px;
  border: 1px solid #b9ded2; border-radius: 10px; background: var(--accent-weak);
  cursor: pointer; box-shadow: var(--shadow-s); transition: transform .16s var(--ease), box-shadow .16s var(--ease);
}
.compare-entry:hover { transform: translateY(-1px); box-shadow: var(--shadow-m); }
.library-entry { background: #f8fbfa; border-color: #d4e5df; }
.compare-entry-txt { min-width: 0; color: var(--accent-deep); font-size: 12.5px; line-height: 1.35; }
.compare-entry-txt b { margin-right: 8px; font-size: 13.5px; }
.compare-entry-txt span { color: var(--text-2); font-size: 11.5px; }
.compare-entry .me-go { margin-left: auto; }
.compare-picker { margin-bottom: 12px; padding: 12px 13px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.compare-picker h3 { margin: 0 0 5px; color: var(--text); font-size: 15px; }
.compare-picker h3 small { margin-left: 5px; color: var(--accent); font-size: 10.5px; font-weight: 500; }
.compare-picker p { margin: 0 0 10px; color: var(--text-2); font-size: 12px; }
.compare-picker .btn { margin: 0 6px 0 0; }
.compare-primary-actions { margin: 0 0 13px; padding: 10px; border: 1px solid #b9ded2; border-radius: 8px; background: var(--accent-weak); }
.compare-primary-actions .btn { font-weight: 600; }
.compare-secondary-action { display: flex; align-items: center; gap: 6px; margin-top: 13px; padding-top: 10px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 11px; }
.compare-secondary-action .btn { color: var(--text-2); }
.compare-category-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 10px 0 12px; }
.compare-category { padding: 9px 10px; border: 1px solid #d9e6e1; border-radius: 9px; background: #fbfdfc; }
.compare-category-head { display: flex; align-items: baseline; justify-content: space-between; gap: 6px; margin-bottom: 7px; color: var(--accent-deep); font-size: 12px; }
.compare-category-head span { color: var(--text-3); font-size: 11px; }
.compare-category .btn { width: 100%; margin: 0; padding: 5px 7px; font-size: 11.5px; }
.compare-topic-section { margin-top: 13px; }
.compare-topic-section h4 { margin: 0 0 7px; color: var(--text-2); font-size: 12.5px; }
.compare-topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.compare-topic-card { padding: 9px 10px; border: 1px solid #d9e6e1; border-radius: 9px; background: #fbfdfc; }
.compare-topic-head { display: flex; align-items: baseline; justify-content: space-between; gap: 6px; color: var(--accent-deep); font-size: 12px; }
.compare-topic-head span { color: var(--text-3); font-size: 11px; white-space: nowrap; }
.compare-topic-summary { margin-top: 4px; color: var(--text-2); font-size: 11.5px; line-height: 1.45; }
.compare-topic-nodes { display: flex; flex-wrap: wrap; gap: 4px; margin: 7px 0; }
.compare-topic-nodes span { padding: 2px 6px; border-radius: 999px; background: var(--accent-weak); color: var(--accent-deep); font-size: 10.5px; }
.compare-topic-card .btn { margin: 0; padding: 5px 8px; font-size: 11.5px; }
.compare-library-intro { margin-bottom: 12px; padding: 12px 13px; border: 1px solid #b9ded2; border-radius: 10px; background: linear-gradient(135deg, #eefaf6, #fbfdfc); }
.compare-library-intro h3 { margin: 0 0 5px; color: var(--accent-deep); font-size: 15px; }
.compare-library-intro h3 small { margin-left: 5px; color: var(--text-3); font-size: 10.5px; font-weight: 400; }
.compare-library-intro p { margin: 0; color: var(--text-2); font-size: 12px; line-height: 1.6; }
.compare-library-primary { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-top: 10px; padding-top: 9px; border-top: 1px solid #d4e5df; color: var(--text-2); font-size: 11px; }
.compare-library-primary .btn { padding: 5px 8px; font-size: 11px; }
.compare-library-search { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 6px 8px; margin-top: 10px; padding-top: 9px; border-top: 1px solid #d4e5df; }
.compare-library-search label { color: var(--accent-deep); font-size: 11.5px; font-weight: 600; }
.compare-library-search input { min-width: 0; padding: 7px 9px; border: 1px solid #bfd9d0; border-radius: 7px; background: #fff; color: var(--text); font: inherit; font-size: 12px; outline: none; }
.compare-library-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(19, 119, 91, .12); }
.compare-library-search span { grid-column: 2; color: var(--text-3); font-size: 10.5px; line-height: 1.4; }
.compare-lib-root { margin: 10px 0; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); overflow: hidden; }
.compare-lib-root > summary { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; cursor: pointer; color: var(--accent-deep); font-size: 13px; }
.compare-lib-root > summary span { color: var(--text-3); font-size: 11px; }
.compare-lib-branches { padding: 0 9px 9px; }
.compare-lib-topic { margin-top: 8px; border: 1px solid #d9e6e1; border-radius: 8px; background: #fbfdfc; }
.compare-lib-topic > summary { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 9px 10px; cursor: pointer; color: var(--text); font-size: 12.5px; }
.compare-lib-topic > summary > span { min-width: 0; }
.compare-lib-topic > summary small { margin-left: 7px; color: var(--text-3); font-size: 10.5px; font-weight: 400; }
.compare-lib-topic > summary em { flex: none; color: var(--accent); font-size: 10.5px; font-style: normal; }
.compare-lib-topic-body { padding: 0 10px 10px; }
.compare-lib-topic-body > .btn { margin-bottom: 9px; padding: 6px 9px; font-size: 11.5px; }
.compare-lib-summary { margin-bottom: 9px; color: var(--text-2); font-size: 11.5px; line-height: 1.55; }
.compare-lib-label { margin: 9px 0 6px; color: var(--accent-deep); font-size: 11.5px; font-weight: 600; }
.compare-lib-nodes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.compare-lib-node { min-width: 0; padding: 0; border-left: 3px solid var(--accent); border-radius: 5px; background: var(--accent-weak); overflow: hidden; }
.compare-lib-node > summary { display: flex; align-items: center; justify-content: space-between; gap: 6px; padding: 7px 8px; cursor: pointer; color: var(--accent-deep); font-size: 11.5px; }
.compare-lib-node > summary b { min-width: 0; }
.compare-lib-node > summary span { flex: none; color: var(--text-3); font-size: 10px; }
.compare-lib-node-body { padding: 7px 8px 8px; border-top: 1px solid #d4e5df; background: #fff; color: var(--text-2); font-size: 10.5px; line-height: 1.5; }
.compare-lib-node-body > div + div { margin-top: 3px; }
.compare-lib-node-body .btn { margin-top: 6px; padding: 4px 7px; font-size: 10.5px; }
.compare-lib-rounds { display: grid; gap: 7px; }
.compare-lib-round { padding: 8px 9px; border: 1px solid #e4e1d5; border-radius: 7px; background: #fffdf7; }
.compare-lib-round-head { display: flex; justify-content: space-between; gap: 8px; color: var(--text); font-size: 11.5px; font-weight: 600; }
.compare-lib-round-head small { color: var(--text-3); font-size: 10px; font-weight: 400; }
.compare-lib-focus, .compare-lib-answer { margin-top: 5px; color: var(--text-2); font-size: 11px; line-height: 1.5; }
.compare-lib-answer { color: var(--accent-deep); }
.auxiliary-title { margin-top: 15px; }
.compare-meta { margin: 0 0 8px; color: var(--text-2); font-size: 12px; }
.topic-head { margin: 0 0 12px; padding: 11px 12px; border: 1px solid #b9ded2; border-radius: 10px; background: linear-gradient(135deg, #eefaf6, #f8fcfb); }
.topic-title { color: var(--accent-deep); font-size: 14px; font-weight: 600; }
.topic-summary { margin-top: 4px; color: var(--text-2); font-size: 12px; line-height: 1.5; }
.topic-nodes { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.topic-node { padding: 4px 8px; border: 1px solid #b9ded2; border-radius: 999px; background: #fff; color: var(--accent-deep); font-size: 11px; }
.topic-node small { margin-left: 4px; color: var(--text-3); }
.topic-head-actions { margin-top: 9px; }
.topic-head-actions .btn { padding: 5px 8px; font-size: 11px; }
.compare-focus { margin: 0 0 12px; padding: 9px 11px; border-left: 3px solid var(--accent); background: var(--accent-weak); color: var(--text-2); font-size: 12px; line-height: 1.55; }
.compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.compare-card { min-width: 0; padding: 10px 11px 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-s); }
.compare-card .q-wrap { padding: 0; border: 0; box-shadow: none; }
.compare-card .q-type-tag { margin-bottom: 7px; }
.compare-card .q-stem { font-size: 13px; line-height: 1.6; }
.compare-card .q-opt { font-size: 12px; }
.compare-note { margin-top: 12px; padding: 10px 11px; border-radius: 9px; background: #f8f6ed; color: var(--text-2); font-size: 12px; line-height: 1.55; }
.compare-result-row { display: flex; align-items: center; gap: 8px; margin: 7px 0; padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 12px; }
.compare-result-row b { min-width: 72px; color: var(--text); }
.compare-result-row .ok { color: var(--accent-deep); }
.compare-result-row .bad { color: var(--warn); }
@media (max-width: 640px) {
  .compare-category-grid { grid-template-columns: 1fr; }
  .compare-topic-grid { grid-template-columns: 1fr; }
  .compare-lib-nodes { grid-template-columns: 1fr; }
  .compare-library-search { grid-template-columns: 1fr; }
  .compare-library-search span { grid-column: 1; }
  .compare-grid { grid-template-columns: 1fr; }
  .compare-entry-txt b { display: block; margin: 0; }
}
.me-ico { display: inline-flex; color: var(--accent); flex: none; }
.me-txt { min-width: 0; color: var(--text-2); font-size: 12px; line-height: 1.4; }
.me-sub { display: block; overflow: hidden; color: var(--text-3); font-size: 10.5px; text-overflow: ellipsis; white-space: nowrap; }
.me-go { margin-left: auto; flex: none; color: var(--accent); font-size: 11px; }
.gs-card { margin-top: 17px; padding: 11px 13px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-s); }
.gs-card .daily-head { margin-bottom: 0; font-size: 12.5px; }
.gs-card .gs-body { margin-top: 9px; }
@media (max-width: 640px) {
  .mini-row { grid-template-columns: 1fr; }
  .mode-card { padding-right: 12px; }
}

/* ============ v1.21 古风自测界面重排（桌面侧栏 / 手机底栏） ============
   仅调整视觉层与响应式布局，不改变任何 data-* 钩子、题库、组卷或存储逻辑。
   设计原则：考试、自测第一层；资料查询第二层；古风只做纸张、边框和色彩的克制提示。
   ============ */
:root {
  --paper: #f7f1e5;
  --paper-deep: #eee5d4;
  --ink: #24302b;
  --jade: #0e7561;
  --jade-deep: #075242;
  --jade-soft: #dcefe8;
  --cinnabar: #b65b45;
  --line-soft: #d9d0c1;
  --shadow-paper: 0 14px 34px rgba(71, 61, 45, .09), 0 2px 5px rgba(71, 61, 45, .05);
}

body {
  background:
    radial-gradient(circle at 78% 12%, rgba(184, 167, 137, .12), transparent 23rem),
    linear-gradient(135deg, rgba(255,255,255,.55), transparent 42%),
    var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: auto;
  text-rendering: optimizeLegibility;
}

.app-header {
  position: fixed;
  inset: 0 auto 0 0;
  width: 246px;
  overflow-y: auto;
  background: rgba(250, 246, 237, .94);
  border-right: 1px solid var(--line-soft);
  border-bottom: 0;
  box-shadow: 4px 0 22px rgba(71, 61, 45, .06);
  z-index: 20;
}

.header-inner {
  width: 100%;
  max-width: none;
  min-height: 100vh;
  padding: 28px 20px 24px;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  grid-template-rows: auto auto auto 1fr;
  align-content: start;
  align-items: center;
  gap: 0 10px;
}

.logo-mark {
  grid-column: 1;
  grid-row: 1 / span 2;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  color: var(--jade-deep);
  background: var(--jade-soft);
  border: 1px solid rgba(14,117,97,.16);
}

.app-title {
  grid-column: 2;
  grid-row: 1;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1.35;
}

.header-tag {
  grid-column: 2;
  grid-row: 2;
  margin: 2px 0 0;
  padding: 0;
  color: #7b766b;
  background: transparent;
  border: 0;
  font-size: 10.5px;
  line-height: 1.55;
  white-space: normal;
}

.primary-nav {
  grid-column: 1 / -1;
  grid-row: 3;
  width: 100%;
  margin: 34px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 7px;
}

.primary-nav::before {
  content: "主要功能";
  margin: 0 10px 5px;
  color: #948d80;
  font-size: 10.5px;
  letter-spacing: .18em;
}

.primary-nav-btn {
  position: relative;
  padding: 11px 14px 11px 42px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: #6c6a63;
  font-size: 13px;
  text-align: left;
  letter-spacing: .04em;
}

.primary-nav-btn::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 50%;
  width: 7px;
  height: 7px;
  border: 1px solid currentColor;
  border-radius: 50%;
  transform: translateY(-50%);
}

.primary-nav-btn:hover,
.primary-nav-btn.active {
  color: var(--jade-deep);
  background: var(--jade-soft);
  border-color: #b9d9cf;
}

.primary-nav-btn.active::after {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--jade);
}

.app-main {
  width: auto;
  max-width: 1180px;
  margin: 0 auto 0 246px;
  padding: 38px 46px 54px;
}

.app-footer {
  margin-left: 246px;
  border-top-color: var(--line-soft);
  background: rgba(250, 246, 237, .72);
  color: #8e887c;
  font-family: "Microsoft YaHei", sans-serif;
}

.home-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
  padding: 22px 26px 20px;
  border: 1px solid #b6d6cb;
  border-radius: 16px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.82), rgba(220,239,232,.86)),
    var(--jade-soft);
  box-shadow: var(--shadow-paper);
}

.home-hero::after {
  content: "";
  position: absolute;
  right: -32px;
  top: -56px;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(14,117,97,.12);
  border-radius: 50%;
  box-shadow: 0 0 0 18px rgba(14,117,97,.035), 0 0 0 36px rgba(14,117,97,.025);
  pointer-events: none;
}

.hero-head, .hero-prog, .hero-sub, .hero-divider, .daily-items, #active-exam-card { position: relative; z-index: 1; }
.hero-tt { font-size: 18px; letter-spacing: .08em; }
.hero-streak { background: rgba(255,255,255,.85); }
.home-hero .daily-items { margin-top: 16px; }
.home-hero .daily-item { padding: 6px 14px; background: rgba(255,255,255,.86); }
.home-hero .hero-prog { margin-top: 14px; font-size: 13px; }
.home-hero .hero-sub { font-size: 12px; }

.sec-title {
  margin: 24px 0 11px;
  color: #66665f;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
}

.sec-title::before {
  width: 4px;
  height: 16px;
  border-radius: 1px;
  background: var(--jade);
}

.mode-grid { gap: 16px; }
.mode-card {
  min-height: 224px;
  padding: 22px 22px 20px 25px;
  border-color: var(--line-soft);
  border-radius: 15px;
  background: rgba(255,255,255,.75);
  box-shadow: var(--shadow-paper);
}

.mode-card::before { width: 4px; background: linear-gradient(180deg, var(--jade), #5ba58e); }
.mode-head { gap: 12px; }
.mode-head svg { width: 36px; height: 36px; padding: 8px; border-radius: 10px; background: var(--jade-soft); }
.mode-head h2 { font-size: 17px; letter-spacing: .05em; }
.mode-desc { margin: 13px 0 10px; font-size: 13px; }
.mode-cta { margin-top: 14px; padding: 8px 12px; border-radius: 8px; font-size: 13px; letter-spacing: .08em; }
.mode-cta.alt { background: #e9f5f0; }

.selftest-entry, .compare-entry {
  min-height: 62px;
  padding: 13px 16px;
  border-radius: 12px;
  box-shadow: var(--shadow-paper);
}

.selftest-entry { background: linear-gradient(100deg, #e0f2ec, #fafcf9); }
.selftest-entry-ico { width: 40px; height: 40px; border-radius: 10px; font-size: 12px; }
.selftest-entry-txt { font-size: 14px; }
.selftest-entry-txt span, .compare-entry-txt span { font-size: 12px; }
.compare-entry { background: rgba(255,255,255,.76); border-color: #c1dbd2; }

.quick-row { gap: 12px; margin-top: 0; }
.quick-card {
  min-height: 94px;
  padding: 16px 17px;
  border-radius: 12px;
  background: rgba(255,255,255,.74);
  border-color: var(--line-soft);
  box-shadow: var(--shadow-paper);
}
.quick-title { font-size: 14px; letter-spacing: .04em; }
.quick-sub { font-size: 12px; }

.mini-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.mini-entry { min-height: 56px; padding: 13px 15px; border-color: var(--line-soft); background: rgba(255,255,255,.68); }
.gs-card { background: rgba(255,255,255,.55); border-color: var(--line-soft); }
.auxiliary-title { color: #898477; }
.library-entry { background: rgba(255,255,255,.5); box-shadow: none; }

.view-head, .quiz-top {
  border-bottom-color: var(--line-soft);
}
.view-head h2 { letter-spacing: .08em; }
.app-title, .view-head h2, .home-heading-mark, .home-heading h1,
.sec-title, .mode-head h2, .library-entry-head span, .library-entry-card-text b,
.gs-card, .compare-library-intro h3 { font-family: "Songti SC", "STSong", "SimSun", serif; }
.panel, .q-wrap, .result-block, .paper-item, .subject-card, .chapter-item {
  border-color: var(--line-soft);
  box-shadow: var(--shadow-paper);
}
.btn-primary { background: var(--jade); border-color: var(--jade); }
.btn-primary:hover { background: var(--jade-deep); border-color: var(--jade-deep); }

@media (max-width: 860px) {
  .app-header {
    position: sticky;
    inset: auto;
    width: 100%;
    max-height: none;
    overflow: visible;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  .header-inner {
    min-height: 0;
    padding: 12px 15px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 10px;
  }
  .logo-mark { width: 34px; height: 34px; }
  .app-title { font-size: 15px; letter-spacing: .06em; }
  .header-tag { display: none; }
  .primary-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    width: 100%;
    height: 68px;
    margin: 0;
    padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line-soft);
    border-bottom: 0;
    background: rgba(250, 246, 237, .96);
    box-shadow: 0 -8px 24px rgba(71, 61, 45, .10);
    backdrop-filter: blur(12px);
    flex-direction: row;
    gap: 3px;
  }
  .primary-nav::before { display: none; }
  .primary-nav-btn {
    flex: 1;
    padding: 27px 4px 4px;
    border-radius: 8px;
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 11px;
    text-align: center;
  }
  .primary-nav-btn::before {
    left: 50%;
    top: 13px;
    width: 9px;
    height: 9px;
    transform: translateX(-50%);
  }
  .primary-nav-btn.active::after { display: none; }
  .app-main { width: 100%; margin: 0; padding: 20px 14px 94px; }
  .app-footer { display: none; }
  .home-hero { padding: 17px 16px 15px; margin-bottom: 22px; }
  .home-hero::after { right: -80px; top: -80px; opacity: .65; }
  .hero-tt { font-size: 16px; }
  .mode-card { min-height: 0; padding: 18px 17px 17px 20px; }
  .mode-desc { font-size: 12px; }
  .sec-title { margin-top: 21px; }
  .quick-card { min-height: 76px; padding: 13px 14px; }
  .mini-row { grid-template-columns: 1fr; }
  .selftest-entry, .compare-entry { align-items: flex-start; }
  .selftest-entry-txt b, .compare-entry-txt b { display: block; margin: 0 0 2px; }
}

@media (max-width: 380px) {
  .app-main { padding-left: 11px; padding-right: 11px; }
  .home-hero { padding-left: 13px; padding-right: 13px; }
  .mode-head h2 { font-size: 15px; }
  .mode-card { padding-left: 17px; }
}

@media print {
  .app-header { position: static; width: auto; border: 0; box-shadow: none; }
  .app-main, .app-footer { margin-left: 0; }
}

/* ============ v1.21 参考稿落地：首页四块主行动卡 ============ */
.home-heading {
  position: relative;
  margin: 0 0 22px;
  padding: 4px 2px 7px;
}
.home-heading::after {
  content: "";
  position: absolute;
  right: 4%;
  bottom: 4px;
  width: 34%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(87, 119, 108, .35));
}
.home-heading-mark {
  display: block;
  color: var(--ink);
  font-size: clamp(26px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: .14em;
  line-height: 1.25;
}
.home-heading h1 {
  margin: 4px 0 5px;
  color: #6f756d;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .18em;
}
.home-heading > span:last-child {
  color: #8d897e;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 12px;
}
.home-core-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.home-core-grid .mode-card {
  min-height: 260px;
  display: flex;
  flex-direction: column;
}
.home-core-grid .mode-desc { min-height: 42px; }
.home-core-grid .mode-detail { margin-top: auto; }
.home-core-grid .mode-cta { margin-top: 14px; }
.home-action-card {
  margin-top: 0;
  border-color: #c8d9d0;
  background: rgba(255, 255, 255, .67);
}
.home-action-card::before { background: linear-gradient(180deg, var(--jade), #85ad9d); }
.home-action-card.compare-entry { display: flex; align-items: stretch; gap: 0; }
.home-action-card.compare-entry .mode-head,
.home-action-card.compare-entry .mode-desc,
.home-action-card.compare-entry .home-card-note,
.home-action-card.compare-entry .mode-cta { width: 100%; }
.home-card-glyph {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--jade-soft);
  color: var(--jade-deep);
  font-family: "Songti SC", "STSong", serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
}
.home-card-glyph-compare { background: #f4e7df; color: var(--cinnabar); }
.home-card-note {
  display: block;
  min-height: 38px;
  margin-top: 5px;
  color: #87847a;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 11px;
  line-height: 1.55;
}
.home-action-card .mode-cta { margin-top: auto; }
.home-action-card.compare-entry .mode-cta.alt { background: #f7ece6; color: #8f4f3d; }
.home-core-grid + .sec-title { margin-top: 31px; }
.quick-row { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1100px) and (min-width: 861px) {
  .home-core-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-core-grid .mode-card { min-height: 220px; }
}

@media (max-width: 860px) {
  .home-heading { margin-bottom: 18px; }
  .home-heading-mark { font-size: 29px; }
  .home-heading h1 { font-size: 12px; }
  .home-heading > span:last-child { font-size: 11px; }
  .home-core-grid { grid-template-columns: 1fr; gap: 11px; }
  .home-core-grid .mode-card { min-height: 0; }
  .home-core-grid .mode-desc { min-height: 0; }
  .home-card-note { min-height: 0; }
  .quick-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 420px) {
  .home-heading-mark { font-size: 25px; letter-spacing: .1em; }
  .quick-row { grid-template-columns: 1fr; }
}

/* ============ v1.21.1 紧凑首页：底部内容双栏化 ============ */
.home-bottom-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: 16px;
  align-items: start;
  margin-top: 27px;
}
.home-bottom-grid .sec-title { margin-top: 0; }
.home-bottom-grid .quick-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.home-bottom-grid .library-entry { margin-top: 0; }
.home-bottom-grid .gs-card { margin-top: 10px; }
.home-heading { margin-bottom: 15px; padding-top: 0; }
.home-heading-mark { font-size: clamp(25px, 3vw, 36px); }
.home-heading h1 { margin-top: 2px; }
.home-heading > span:last-child { display: none; }
.home-hero { margin-bottom: 19px; padding-top: 17px; padding-bottom: 15px; }
.home-core-grid .mode-card { min-height: 218px; padding-top: 18px; padding-bottom: 17px; }

@media (max-width: 1100px) and (min-width: 861px) {
  .home-bottom-grid { grid-template-columns: minmax(0, 1fr) minmax(250px, .92fr); gap: 12px; }
  .home-core-grid .mode-card { min-height: 184px; }
  .home-core-grid .mode-detail { display: none; }
  .home-core-grid .mode-desc { min-height: 0; }
  .home-card-note { min-height: 0; }
  .home-hero { padding-top: 14px; padding-bottom: 12px; }
}

@media (max-width: 860px) {
  .home-bottom-grid { grid-template-columns: 1fr; gap: 19px; margin-top: 21px; }
  .home-bottom-grid .home-aux-block .sec-title { margin-top: 0; }
  .home-core-grid .mode-card { min-height: 0; }
}

/* ============ v1.34 首页大入口插画：增加识别度，文字仍为主信息层 ============ */
.home-entry-card { isolation: isolate; }
.home-entry-card::before { z-index: 2; }
.home-entry-art {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  object-position: center;
  opacity: .74;
  filter: saturate(.78) contrast(.94);
  mix-blend-mode: normal;
  pointer-events: none;
  user-select: none;
  -webkit-mask-image: none;
  mask-image: none;
}
.home-entry-card::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.28);
  box-shadow: inset 0 0 18px rgba(255,255,255,.10);
  -webkit-backdrop-filter: blur(3px) saturate(108%);
  backdrop-filter: blur(3px) saturate(108%);
}
.home-entry-card > *:not(.home-entry-art) { position: relative; z-index: 1; }
.home-entry-card:hover .home-entry-art { opacity: .80; transition: opacity .18s var(--ease); }
.home-entry-card .mode-detail,
.home-entry-card .home-card-note { background: rgba(255,255,255,.34); }

@media (max-width: 1100px) and (min-width: 861px) {
  .home-entry-art { opacity: .68; }
}

@media (max-width: 860px) {
  .home-entry-art { opacity: .64; }
  .home-entry-card::after { background: rgba(255,255,255,.24); }
}

@media (max-width: 420px) {
  .home-entry-art { opacity: .58; }
}

/* ============ v1.34 首页场景扩展：主学习框 / 日常入口 / 资料入口 ============ */
.home-hero { isolation: isolate; }
.home-hero-art {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  object-position: center;
  opacity: .82;
  filter: saturate(.74) contrast(.94);
  mix-blend-mode: multiply;
  pointer-events: none;
  user-select: none;
  -webkit-mask-image: none;
  mask-image: none;
}
.home-hero > *:not(.home-hero-art) { position: relative; z-index: 1; }

.quick-card,
.library-entry-card { position: relative; isolation: isolate; overflow: hidden; }
.quick-card::after,
.library-entry-card::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  background: rgba(255,255,255,.20);
  border: 1px solid rgba(255,255,255,.26);
  box-shadow: inset 0 0 16px rgba(255,255,255,.10);
  -webkit-backdrop-filter: blur(3px) saturate(106%);
  backdrop-filter: blur(3px) saturate(106%);
}
.quick-card-art,
.library-entry-card-art {
  position: absolute;
  z-index: 0;
  right: -8px;
  bottom: -14px;
  width: 54%;
  height: 128%;
  object-fit: cover;
  object-position: right center;
  opacity: .66;
  filter: saturate(.70) contrast(.94);
  mix-blend-mode: multiply;
  pointer-events: none;
  user-select: none;
  -webkit-mask-image: none;
  mask-image: none;
}
.quick-card > *:not(.quick-card-art),
.library-entry-card > *:not(.library-entry-card-art) { position: relative; z-index: 1; }
.quick-card:hover .quick-card-art,
.library-entry-card:hover .library-entry-card-art { opacity: .74; transition: opacity .16s var(--ease); }
.library-entry-card-art { opacity: .60; }

@media (max-width: 860px) {
  .home-hero-art { opacity: .72; }
  .quick-card-art { opacity: .52; }
  .library-entry-card-art { opacity: .46; }
}

@media (max-width: 420px) {
  .home-hero-art { opacity: .66; }
  .quick-card-art { opacity: .46; }
  .library-entry-card-art { opacity: .40; }
}

/* ============ v1.22 资料库分区：分类卡 / 主题卡 / 详情折叠 ============ */
.library-entry-wrap {
  margin-top: 9px;
  padding: 11px 12px 12px;
  border: 1px solid #d4e5df;
  border-radius: 12px;
  background: rgba(255,255,255,.52);
}
.library-entry-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 8px; color: #77756d; font-size: 12px; }
.library-entry-head span { color: var(--accent-deep); font-family: "Songti SC", "STSong", serif; font-size: 14px; font-weight: 700; }
.library-entry-head small { color: var(--text-3); font-size: 10.5px; }
.library-entry-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.library-entry-card {
  min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  min-height: 94px; padding: 9px 6px;
  border: 1px solid #d9e6e1; border-radius: 9px; background: rgba(255,255,255,.74);
  color: var(--text); font: inherit; text-align: center; cursor: pointer;
  transition: transform .16s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.library-entry-card:hover { transform: translateY(-1px); border-color: #9dc8bb; box-shadow: var(--shadow-s); }
.library-entry-mark { display: inline-flex; width: 27px; height: 27px; align-items: center; justify-content: center; flex: none; border-radius: 8px; background: var(--accent-weak); color: var(--accent-deep); font-family: "Songti SC", "STSong", serif; font-size: 13px; font-weight: 700; }
.library-entry-card-text { min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 1px; }
.library-entry-card-text b { color: var(--accent-deep); font-size: 12px; }
.library-entry-card-text small { display: block; max-width: 100%; overflow: hidden; color: var(--text-3); font-size: 9.5px; line-height: 1.3; text-align: center; text-overflow: clip; white-space: normal; }
.library-entry-count { margin-left: 0; flex: none; color: var(--accent); font-size: 10px; }

.compare-library-title-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.compare-library-title-row > .btn { flex: none; margin-top: 1px; padding: 6px 9px; font-size: 11px; }
.compare-library-category-bar { margin: 0 0 12px; padding: 10px; border: 1px solid var(--line-soft); border-radius: 11px; background: rgba(255,255,255,.62); }
.compare-library-category-label { margin-bottom: 7px; color: var(--text-3); font-size: 11px; font-weight: 600; letter-spacing: .04em; }
.compare-library-category-tabs { display: grid; grid-template-columns: 82px repeat(3, minmax(0, 1fr)); gap: 7px; }
.compare-library-category-tab { min-width: 0; display: flex; align-items: center; gap: 7px; padding: 8px 9px; border: 1px solid #d9e6e1; border-radius: 8px; background: #fbfdfc; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.compare-library-category-tab:hover, .compare-library-category-tab.active { border-color: #8dbfad; background: var(--accent-weak); }
.compare-library-category-tab > b { color: var(--accent-deep); font-size: 11.5px; }
.compare-library-category-tab > small, .compare-library-category-tab span small { display: block; overflow: hidden; margin-top: 2px; color: var(--text-3); font-size: 9.5px; font-weight: 400; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.compare-library-category-tab span:not(.compare-library-category-glyph) { min-width: 0; }
.compare-library-category-tab em { margin-left: auto; color: var(--accent); font-size: 10px; font-style: normal; }
.compare-library-category-glyph { display: inline-flex; width: 25px; height: 25px; align-items: center; justify-content: center; flex: none; border-radius: 7px; background: #e4f3ed; color: var(--accent-deep); font-family: "Songti SC", "STSong", serif; font-size: 12px; font-weight: 700; }
.compare-lib-root { margin: 0 0 12px; }
.compare-lib-root-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--line-soft); background: linear-gradient(100deg, #f0f8f4, #fffdf8); color: var(--accent-deep); }
.compare-lib-root-head b { font-family: "Songti SC", "STSong", serif; font-size: 14px; }
.compare-lib-root-head small { margin-left: 8px; color: var(--text-3); font-size: 10.5px; font-weight: 400; }
.compare-lib-root-head > span { color: var(--accent); font-size: 10px; }
.compare-lib-topic-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; padding: 9px; }
.compare-lib-topic { margin-top: 0; align-self: start; }
.compare-lib-topic-teaser { padding: 0 10px 9px; color: var(--text-2); font-size: 10.5px; line-height: 1.45; }
.compare-lib-topic-chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.compare-lib-topic-chips span { padding: 2px 5px; border-radius: 999px; background: var(--accent-weak); color: var(--accent-deep); font-size: 9.5px; }
.compare-lib-topic[open] { grid-column: 1 / -1; }
.compare-lib-topic[open] > summary { background: #f4faf7; }

@media (max-width: 640px) {
  .library-entry-grid { grid-template-columns: 1fr; }
  .library-entry-card-text small { white-space: normal; }
  .compare-library-title-row { display: block; }
  .compare-library-title-row > .btn { width: 100%; margin-top: 9px; }
  .compare-library-category-tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .compare-library-category-tab:first-child { grid-column: 1 / -1; }
  .compare-library-category-tab { padding: 8px 7px; }
  .compare-library-category-tab span small { display: none; }
  .compare-library-category-tab > small { margin-top: 2px; }
  .compare-library-category-tab em { display: none; }
  .compare-lib-topic-grid { grid-template-columns: 1fr; }
  .compare-lib-topic[open] { grid-column: auto; }
  .compare-lib-root-head { align-items: flex-start; }
  .compare-lib-root-head small { display: block; margin: 3px 0 0; }
}

/* ============ v1.26 技能页工具栏重排：导航 / 操作 / 说明分层 ============ */
#view-skill .view-head { margin-bottom: 11px; }
#view-skill .view-head h2 { letter-spacing: .08em; }
#skill-tabs {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "nav actions";
  align-items: center; gap: 10px; margin-bottom: 10px; padding: 9px 11px;
  border: 1px solid var(--line-soft); border-radius: 12px; background: rgba(255,255,255,.58);
  box-shadow: var(--shadow-paper);
}
.skill-tab-nav { grid-area: nav; min-width: 0; display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
.skill-tab-nav .chip { padding: 6px 11px; line-height: 1.35; white-space: nowrap; }
.skill-tab-actions { grid-area: actions; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.skill-tab-actions .btn { white-space: nowrap; padding: 7px 11px; font-size: 12px; }
#skill-body { min-width: 0; }
#skill-body > .sk-note {
  margin: 0 0 10px; padding: 9px 12px 9px 14px; border: 1px solid #d8e5df; border-left: 3px solid var(--accent);
  border-radius: 9px; background: rgba(247,252,249,.78); color: var(--text-2); font-size: 12px; line-height: 1.65;
}
#skill-body .sk-ctrl {
  margin: 0 0 11px; padding: 9px 10px; border: 1px solid var(--line-soft); border-radius: 10px;
  background: rgba(255,255,255,.48); align-items: center;
}
#skill-body .sk-ctrl .chip { padding: 5px 10px; }
.skill-point-search {
  min-width: 190px; flex: 1 1 210px; height: 32px; padding: 0 11px;
  border: 1px solid var(--line-soft); border-radius: 8px; background: rgba(255,255,255,.82);
  color: var(--text); font: inherit; font-size: 12px; outline: none;
}
.skill-point-search:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(15,110,86,.12); }

@media (max-width: 860px) {
  #skill-tabs { display: block; }
  .skill-tab-nav { margin-bottom: 8px; }
  .skill-tab-actions { justify-content: stretch; }
  .skill-tab-actions .btn { flex: 1 1 180px; }
}

@media (max-width: 480px) {
  #view-skill .view-head { gap: 8px; }
  #view-skill .view-head h2 { font-size: 16px; }
  #skill-tabs { padding: 8px; }
  .skill-tab-nav { gap: 6px; }
  .skill-tab-nav .chip { flex: 1 1 calc(50% - 6px); text-align: center; padding-left: 6px; padding-right: 6px; }
  .skill-tab-actions { display: grid; grid-template-columns: 1fr; }
  .skill-tab-actions .btn { width: 100%; }
  .skill-point-search { min-width: 100%; order: 3; }
}

/* ============ v1.23 练习退出反馈：应用内确认层 / 安全返回提示 ============ */
[hidden] { display: none !important; }
.app-dialog-backdrop {
  position: fixed; z-index: 1000; inset: 0; display: grid; place-items: center; padding: 18px;
  background: rgba(34, 39, 35, .36); backdrop-filter: blur(2px);
}
.app-dialog-backdrop[hidden], .app-toast[hidden] { display: none; }
.app-dialog {
  width: min(100%, 390px); padding: 16px; border: 1px solid #c9d8d1; border-radius: 14px;
  background: #fffdf8; box-shadow: 0 18px 55px rgba(33, 55, 47, .22);
}
.app-dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.app-dialog-head h3 { margin: 0; color: var(--accent-deep); font-family: "Songti SC", "STSong", serif; font-size: 16px; }
.app-dialog-close { width: 30px; height: 30px; border: 0; border-radius: 8px; background: transparent; color: var(--text-3); font-size: 22px; line-height: 1; cursor: pointer; }
.app-dialog-close:hover { background: #edf5f1; color: var(--accent-deep); }
.app-dialog p { margin: 13px 0 15px; color: var(--text-2); font-size: 12px; line-height: 1.7; }
.app-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }
.app-dialog-actions .btn { min-width: 96px; padding: 7px 10px; font-size: 12px; }
.app-toast {
  position: fixed; z-index: 1010; left: 50%; bottom: 24px; transform: translateX(-50%);
  max-width: calc(100vw - 32px); padding: 9px 13px; border: 1px solid #bdd9ce; border-radius: 999px;
  background: rgba(244, 251, 247, .96); color: var(--accent-deep); font-size: 11.5px; box-shadow: 0 8px 24px rgba(33, 55, 47, .14);
}
.app-toast.exam-data-toast {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  border-radius: 12px;
  padding: 9px 11px;
  white-space: nowrap;
}
.exam-data-toast-copy { overflow: hidden; text-overflow: ellipsis; }
.exam-data-toast a,
.exam-data-toast button {
  flex: none;
  border: 0;
  border-radius: 7px;
  padding: 4px 8px;
  color: var(--accent-deep);
  background: var(--accent-weak);
  font: inherit;
  font-size: 11px;
  text-decoration: none;
  cursor: pointer;
}
.exam-data-toast button { border: 1px solid #bdd9ce; background: #fff; }
@media (max-width: 640px) {
  .app-dialog-backdrop { align-items: end; padding: 12px; }
  .app-dialog { width: 100%; padding: 15px; border-radius: 14px 14px 10px 10px; }
  .app-dialog-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .app-dialog-actions .btn { width: 100%; }
  .app-toast { bottom: 78px; }
  .app-toast.exam-data-toast { max-width: calc(100vw - 24px); }
}

/* ============ v1.40 考试中断与重考操作 ============ */
.quiz-pause {
  flex: none;
  padding: 5px 10px;
  border-color: #b9d9cf;
  color: var(--accent-deep);
  background: rgba(225,245,238,.68);
  font-size: 12px;
}
.quiz-pause:hover { border-color: var(--accent); color: var(--accent-deep); background: var(--accent-weak); }
.quiz-top .quiz-pause[hidden] { display: none; }
.app-dialog-actions .btn-primary { background: var(--accent); }

/* 服务端覆盖练习：入口克制、选择项收在分科自测页，不延长首页。 */
.practice-preset-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; margin-top: 12px; }
.practice-preset-card { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 13px; border: 1px solid #b9ded2; border-radius: 10px; background: linear-gradient(135deg, #f0faf7, #fff); }
.practice-preset-card b { display: block; color: var(--accent-deep); font-size: 14px; }
.practice-preset-card span { display: block; margin-top: 4px; color: var(--text-3); font-size: 11px; }
.practice-secondary-actions { display: flex; gap: 8px; margin-top: 9px; }
.practice-secondary-actions .btn { padding: 6px 10px; font-size: 12px; }
.practice-drawer { margin-top: 10px; padding: 13px; border: 1px solid #b9ded2; border-radius: 11px; background: #fbfdfc; box-shadow: var(--shadow-s); }
.practice-drawer-head { display: flex; align-items: center; justify-content: space-between; color: var(--accent-deep); font-size: 14px; }
.practice-drawer-head .btn { padding: 4px 8px; font-size: 11px; }
.practice-form-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 11px; }
.practice-form-grid label { display: grid; gap: 4px; color: var(--text-2); font-size: 11px; }
.practice-form-grid select, .wrong-filters select { min-width: 0; padding: 6px 7px; border: 1px solid #c8ddd5; border-radius: 7px; background: #fff; color: var(--text); font: inherit; font-size: 11px; }
.practice-preview { margin: 10px 0; color: var(--text-2); font-size: 11px; line-height: 1.5; }
.wrong-filters { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 10px; }
.wrong-meta { margin: 5px 0; color: var(--text-3); font-size: 11px; line-height: 1.4; }
@media (max-width: 640px) {
  .practice-preset-grid { grid-template-columns: 1fr; }
  .practice-form-grid { grid-template-columns: 1fr; }
  .practice-preset-card { padding: 10px; }
  .practice-preset-card b { font-size: 13px; }
  .wrong-filters select { max-width: 100%; flex: 1 1 30%; }
}

/* ============ v1.28 字体与资料卡清晰化 ============
   采用已有安全视口断点，避免 size containment 影响主内容宽度计算。 */
@media (max-width: 860px) {
  .library-entry-wrap { padding: 10px 9px 11px; }
  .library-entry-head { align-items: flex-start; flex-direction: column; gap: 2px; }
  .library-entry-head small { font-size: 10px; line-height: 1.4; }
  .library-entry-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .library-entry-card {
    padding-left: 5px; padding-right: 5px;
  }
  .library-entry-card-text b { font-size: 12px; }
}

/* ============ v1.36 首页视觉回调：旧顶栏 + 整图轻透背景 ============ */
/* 桌面端顶栏恢复为旧版横向布局；主导航仍保留在移动端底栏。 */
@media (min-width: 861px) {
  .app-header {
    position: sticky;
    inset: auto;
    width: auto;
    overflow: visible;
    background: var(--surface);
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
    box-shadow: 0 1px 0 rgba(22, 44, 37, .02);
  }
  .header-inner {
    width: 100%;
    max-width: 860px;
    min-height: 0;
    margin: 0 auto;
    padding: 11px 20px;
    display: flex;
    align-items: center;
    gap: 11px;
  }
  .logo-mark {
    width: 30px;
    height: 30px;
    border-radius: 9px;
    color: var(--accent-deep);
    background: linear-gradient(150deg, var(--accent-weak), #d3ece3);
    border: 0;
  }
  .app-title {
    color: var(--text);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: .2px;
    line-height: 1.6;
  }
  .header-tag {
    margin-left: auto;
    padding: 2px 10px;
    color: var(--text-2);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 11.5px;
    line-height: 1.6;
    white-space: nowrap;
  }
  .primary-nav { display: none; }
  .app-main {
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    padding: 22px 20px 28px;
  }
  .app-footer {
    margin-left: 0;
    background: var(--surface);
    border-top-color: var(--border);
  }
}

/* 四张考试/自测主入口：整图铺满，仅保留很轻的文字保护层。 */
.home-entry-art {
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  object-position: center;
  opacity: .92;
  filter: saturate(.90) contrast(.98);
  mix-blend-mode: normal;
}
.home-entry-card::after {
  background: rgba(255, 255, 255, .07);
  border-color: rgba(255, 255, 255, .24);
  box-shadow: inset 0 0 14px rgba(255, 255, 255, .06);
  -webkit-backdrop-filter: blur(2px) saturate(105%);
  backdrop-filter: blur(2px) saturate(105%);
}
.home-entry-card:hover .home-entry-art { opacity: .96; }
.home-entry-card .mode-detail,
.home-entry-card .home-card-note { background: rgba(255, 255, 255, .22); }

/* 日常学习：整图显示，文字统一收在左侧，减少图文抢位。 */
.quick-card {
  padding: 15px 42% 14px 17px;
  justify-content: center;
}
.quick-card::after,
.library-entry-card::after {
  background: linear-gradient(90deg, rgba(255,255,255,.34), rgba(255,255,255,.08) 68%, rgba(255,255,255,.03));
  border-color: rgba(255, 255, 255, .24);
  box-shadow: inset 0 0 14px rgba(255, 255, 255, .05);
  -webkit-backdrop-filter: blur(2px) saturate(104%);
  backdrop-filter: blur(2px) saturate(104%);
}
.quick-card-art,
.library-entry-card-art {
  inset: 0;
  right: auto;
  bottom: auto;
  width: 100%;
  height: 100%;
  object-fit: fill;
  object-position: center;
  opacity: .84;
  filter: saturate(.84) contrast(.96);
  mix-blend-mode: normal;
}
.quick-card > *:not(.quick-card-art) { max-width: 100%; }
.quick-card:hover .quick-card-art,
.library-entry-card:hover .library-entry-card-art { opacity: .90; }

/* 相似对比资料库：与考试入口共用整图、轻透、清晰文字规则。 */
.library-entry-card {
  align-items: flex-start;
  justify-content: flex-start;
  padding: 10px 9px;
  text-align: left;
}
.library-entry-card-art { opacity: .78; }
.library-entry-card-text { align-items: flex-start; }
.library-entry-card-text small { text-align: left; }
.library-entry-count { margin-top: auto; }

@media (max-width: 860px) {
  .home-entry-art { opacity: .84; }
  .home-entry-card::after { background: rgba(255, 255, 255, .12); }
  .quick-card { padding-right: 38%; }
  .quick-card-art { opacity: .76; }
  .library-entry-card-art { opacity: .70; }
}

@media (max-width: 420px) {
  .home-entry-art { opacity: .78; }
  .quick-card { padding-right: 34%; }
  .quick-card-art { opacity: .70; }
  .library-entry-card-art { opacity: .64; }
}

/* ============ v1.37 左侧文字透图：按方图比例收紧卡片 ============ */
/* 当前主入口和日常/资料插画均为方图；取消 fill，避免人物被横向拉伸。 */
.home-entry-art {
  object-fit: cover;
  object-position: center;
  opacity: .94;
  filter: saturate(.92) contrast(.98);
}
.home-entry-card::after {
  background: linear-gradient(90deg, rgba(247,241,229,.40), rgba(247,241,229,.16) 56%, rgba(247,241,229,.04));
  box-shadow: inset 0 0 12px rgba(255,255,255,.05);
  -webkit-backdrop-filter: blur(1px) saturate(104%);
  backdrop-filter: blur(1px) saturate(104%);
}
.home-entry-card > *:not(.home-entry-art) { max-width: 76%; }
.home-entry-card .mode-detail,
.home-entry-card .home-card-note { background: rgba(247,241,229,.20); }

@media (min-width: 861px) {
  .home-core-grid .mode-card {
    min-height: 224px;
    height: 224px;
    padding-top: 16px;
    padding-bottom: 14px;
  }
}

/* 日常学习：卡片略加高，文字固定左侧，人物不再被拉宽。 */
.quick-card {
  min-height: 142px;
  padding: 15px 39% 14px 17px;
  justify-content: center;
}
.quick-card::after {
  background: linear-gradient(90deg, rgba(247,241,229,.48), rgba(247,241,229,.17) 62%, rgba(247,241,229,.04));
  -webkit-backdrop-filter: blur(1px) saturate(103%);
  backdrop-filter: blur(1px) saturate(103%);
}
.quick-card-art {
  object-fit: cover;
  object-position: center;
  opacity: .82;
  filter: saturate(.86) contrast(.97);
}
.quick-card > *:not(.quick-card-art) { max-width: 100%; }

/* 资料卡保持三列，但提高高度并采用同一套轻透文字保护层。 */
.library-entry-card {
  min-height: 112px;
  padding: 10px 9px;
}
.library-entry-card::after {
  background: linear-gradient(90deg, rgba(247,241,229,.42), rgba(247,241,229,.14) 64%, rgba(247,241,229,.04));
  -webkit-backdrop-filter: blur(1px) saturate(103%);
  backdrop-filter: blur(1px) saturate(103%);
}
.library-entry-card-art {
  object-fit: cover;
  object-position: center;
  opacity: .76;
  filter: saturate(.84) contrast(.97);
}

@media (max-width: 860px) {
  .home-entry-art { opacity: .86; }
  .home-core-grid .mode-card { height: auto; min-height: 216px; }
  .quick-card { min-height: 136px; padding-right: 36%; }
  .quick-card-art { opacity: .76; }
  .library-entry-card { min-height: 106px; }
  .library-entry-card-art { opacity: .70; }
}

@media (max-width: 420px) {
  .home-entry-art { opacity: .80; }
  .quick-card { min-height: 128px; padding-right: 32%; }
  .quick-card-art { opacity: .70; }
  .library-entry-card { min-height: 100px; }
  .library-entry-card-art { opacity: .64; }
}

/* ============ v1.38 顶部学习背景：保持原比例 ============ */
/* home-hero.jpg 为宽幅图，使用 cover 保持人物比例，不再用 fill 强行拉伸。 */
.home-hero-art {
  object-fit: cover;
  object-position: center center;
}

/* ============ v1.42 操作手感收口：统一鼠标反馈与轻量重绘 ============ */
/* 可交互元素统一手型；禁用控件和已揭示选项不再暗示可点击。 */
button,
[role="button"],
.mode-card,
.quick-card,
.subject-item,
.chapter-item,
.paper-item,
.q-opt:not(.readonly),
.chip,
.daily-item,
.mind-row,
.sk-op-head,
.sk-flash,
summary { cursor: pointer; }

button:disabled,
[aria-disabled="true"],
.q-opt.readonly { cursor: default; }

/* 透明度过渡放在常态，进入/离开 hover 都平滑，避免回弹时突然重绘。 */
.home-entry-art,
.quick-card-art,
.library-entry-card-art { transition: opacity .16s var(--ease); }

/* 手机端不堆叠大面积毛玻璃，保留轻透效果，降低滚动和 hover 重绘成本。 */
@media (max-width: 860px) {
  .home-entry-card::after,
  .quick-card::after,
  .library-entry-card::after {
    -webkit-backdrop-filter: blur(1px) saturate(102%);
    backdrop-filter: blur(1px) saturate(102%);
  }
}

/* 用户系统偏好减少动画时，页面不再做位移、透明度和滚动动画。 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

/* ============ v1.42 首页壁纸与文字层：左清晰、右透图 ============ */
/* 不再让整张卡片使用同一透明度，文字区与人物区分别处理。 */
.home-entry-card::after {
  background: linear-gradient(90deg,
    rgba(247,241,229,.90) 0%,
    rgba(247,241,229,.78) 40%,
    rgba(247,241,229,.42) 60%,
    rgba(247,241,229,.10) 80%,
    rgba(247,241,229,.02) 100%);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.home-entry-card > *:not(.home-entry-art) { max-width: 52%; }
.home-entry-card .mode-cta { max-width: 66%; }
.home-entry-card .mode-desc,
.home-entry-card .home-card-note { color: #3e4a43; }
.home-entry-art {
  object-position: 72% center;
  opacity: .98;
}

/* 桌面端略微加长，保留左侧文字留白。 */
@media (min-width: 861px) {
  .home-core-grid .mode-card {
    min-height: 236px;
    height: 236px;
  }
}

/* 日常学习：人物靠右，文字区更实，图片右侧保持通透。 */
.quick-card::after {
  background: linear-gradient(90deg,
    rgba(247,241,229,.82) 0%,
    rgba(247,241,229,.64) 42%,
    rgba(247,241,229,.26) 68%,
    rgba(247,241,229,.05) 100%);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.quick-card-art { object-position: 72% center; opacity: .92; }

/* 辅助资料卡缩小后仍保持标题清楚，不把人物压到文字上。 */
.library-entry-card::after {
  background: linear-gradient(90deg,
    rgba(247,241,229,.86) 0%,
    rgba(247,241,229,.66) 46%,
    rgba(247,241,229,.22) 76%,
    rgba(247,241,229,.04) 100%);
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.library-entry-card-art { object-position: 76% center; opacity: .86; }

@media (max-width: 860px) {
  .home-entry-card > *:not(.home-entry-art) { max-width: 60%; }
  .home-entry-card .mode-cta { max-width: 78%; }
  .home-core-grid .mode-card { min-height: 220px; }
  .quick-card-art { opacity: .84; }
  .library-entry-card-art { opacity: .78; }
}

@media (max-width: 420px) {
  .home-entry-card > *:not(.home-entry-art) { max-width: 64%; }
  .home-entry-card .mode-cta { max-width: 86%; }
  .home-core-grid .mode-card { min-height: 214px; }
}

/* ============ v1.43 九科自测专属入口：左文右图 ============ */
/* 仅收口分科自测卡，避免影响其它考试入口的排版。 */
.selftest-entry::after {
  background: linear-gradient(90deg,
    rgba(247,241,229,.94) 0%,
    rgba(247,241,229,.82) 42%,
    rgba(247,241,229,.42) 67%,
    rgba(247,241,229,.06) 100%);
}
.selftest-entry .home-entry-art {
  object-position: 78% center;
}
.selftest-entry > *:not(.home-entry-art) {
  align-self: flex-start;
  max-width: 58%;
}
.selftest-entry .mode-head {
  justify-content: flex-start;
  text-align: left;
}
.selftest-entry .mode-head h2,
.selftest-entry .mode-desc,
.selftest-entry .home-card-note {
  text-align: left;
}
.selftest-entry .home-card-glyph {
  border: 1px solid rgba(15,126,100,.16);
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.28);
}
.selftest-entry .mode-cta {
  align-self: flex-start;
  width: min(138px, 100%);
  max-width: none;
}

@media (max-width: 860px) {
  .selftest-entry > *:not(.home-entry-art) { max-width: 68%; }
  .selftest-entry .mode-cta { width: min(132px, 100%); }
}

@media (max-width: 420px) {
  .selftest-entry > *:not(.home-entry-art) { max-width: 72%; }
}
.membership-lock,
.membership-lock-summary {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-3);
  font-size: 12px;
}
.membership-lock a,
.membership-lock-summary a { color: var(--accent-deep); text-decoration: underline; }
.membership-locked { opacity: .82; }
.membership-home-lock {
  position: relative;
  z-index: 2;
  display: block;
  margin-top: 5px;
  color: var(--text-3);
  font-size: 11px;
  line-height: 1.3;
}
.membership-home-lock a { color: var(--accent-deep); text-decoration: underline; }
.membership-lock-summary {
  width: 100%;
  margin: 0 0 12px;
  padding: 9px 11px;
  border: 1px solid #ead8c5;
  border-radius: 9px;
  background: #fffaf4;
}
.trial-entry-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; position: relative; z-index: 3; }
.trial-entry { display: inline-flex; align-items: center; border: 1px solid rgba(15,126,100,.28); border-radius: 999px; padding: 5px 9px; color: var(--accent-deep); background: rgba(255,255,255,.86); font-size: 11px; line-height: 1.2; cursor: pointer; }
.trial-entry:hover { background: #f0faf7; }
.library-entry-card .trial-entry-row { position: absolute; left: 12px; bottom: 8px; margin: 0; }
.library-entry-card .trial-entry { padding: 4px 7px; background: rgba(255,255,255,.92); }
.trial-strip { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px; padding: 10px 12px; border: 1px solid #e5d8c8; border-radius: 10px; background: #fffaf4; }
.trial-strip b, .trial-strip span { display: block; }
.trial-strip b { color: var(--text-1); font-size: 13px; }
.trial-strip span { margin-top: 3px; color: var(--text-3); font-size: 11px; }
.trial-content-panel { padding: 12px; border: 1px solid #b9ded2; border-radius: 10px; background: linear-gradient(135deg, #f0faf7, #fff); }
.trial-content-label { color: var(--accent-deep); font-size: 12px; margin-bottom: 8px; }
.trial-content-item { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid rgba(15,126,100,.12); }
.trial-content-item b { font-size: 13px; }
.trial-content-item span { color: var(--text-3); font-size: 12px; text-align: right; }
@media (max-width: 620px) {
  .trial-strip { display: block; }
  .trial-strip .trial-entry-row { margin-top: 8px; }
  .trial-content-item { display: block; }
  .trial-content-item span { display: block; margin-top: 3px; text-align: left; }
}