:root {
  --bg: #f4efe7;
  --bg-deep: #e9dfd1;
  --paper: rgba(255, 252, 247, 0.94);
  --ink: #1f2933;
  --muted: #586574;
  --line: rgba(121, 91, 53, 0.16);
  --accent: #8f3b2e;
  --accent-soft: #c86f5b;
  --accent-2: #245d6f;
  --good: #1f7a47;
  --bad: #af3029;
  --warn: #a96f1f;
  --shadow: 0 18px 50px rgba(83, 52, 28, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-main: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --font-display: "STZhongsong", "SimSun", "Songti SC", serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-main);
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(200, 111, 91, 0.2), transparent 28%),
    radial-gradient(circle at top right, rgba(36, 93, 111, 0.18), transparent 26%),
    linear-gradient(180deg, #fbf7f1 0%, var(--bg) 56%, var(--bg-deep) 100%);
}

body {
  padding: 28px 20px 56px;
}

a {
  color: inherit;
}

.page-shell {
  width: min(1320px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 20px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(255, 247, 237, 0.9)),
    rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -30px auto;
  width: 220px;
  height: 220px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(200, 111, 91, 0.3), transparent 68%);
  pointer-events: none;
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: 0.04em;
}

.hero-subtitle {
  margin: 12px 0 0;
  max-width: 900px;
  color: var(--muted);
  line-height: 1.7;
}

.hero-meta {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(143, 59, 46, 0.08);
  color: var(--accent);
  font-size: 0.92rem;
}

.question-meta .chip {
  min-height: 38px;
  padding: 7px 12px;
  border: 1px solid rgba(143, 59, 46, 0.08);
  font-weight: 600;
}

.question-meta .chip-question-type {
  background: linear-gradient(135deg, rgba(36, 93, 111, 0.14), rgba(61, 128, 199, 0.18));
  border-color: rgba(61, 128, 199, 0.3);
  color: #1c5770;
  font-weight: 800;
  box-shadow: 0 10px 20px rgba(61, 128, 199, 0.12);
}

.nav-row,
.toolbar-row,
.stats-grid,
.card-grid,
.question-actions,
.answer-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nav-row a,
.ghost-button,
.primary-button,
.secondary-button,
.danger-button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 11px 18px;
  font: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.nav-row a:hover,
.ghost-button:hover,
.primary-button:hover,
.secondary-button:hover,
.danger-button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-soft));
  color: white;
  box-shadow: 0 10px 22px rgba(143, 59, 46, 0.24);
}

.secondary-button {
  background: linear-gradient(135deg, var(--accent-2), #4f8a9f);
  color: white;
  box-shadow: 0 10px 22px rgba(36, 93, 111, 0.2);
}

.ghost-button,
.nav-row a {
  background: rgba(255, 255, 255, 0.68);
  color: var(--ink);
  border: 1px solid rgba(36, 93, 111, 0.12);
}

.danger-button {
  background: rgba(175, 48, 41, 0.1);
  color: var(--bad);
  border: 1px solid rgba(175, 48, 41, 0.14);
}

.page-card,
.panel,
.question-card,
.metric-card,
.chapter-card,
.list-card,
.graph-card,
.empty-card {
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.68);
  box-shadow: var(--shadow);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
}

.page-card,
.panel,
.question-card,
.graph-card,
.list-card,
.empty-card {
  padding: 22px;
}

.section-title {
  margin: 0 0 14px;
  font-size: 1.18rem;
}

.section-caption,
.muted {
  color: var(--muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.metric-card {
  padding: 18px;
}

.metric-label {
  color: var(--muted);
  font-size: 0.92rem;
}

.metric-value {
  margin-top: 10px;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-weight: 700;
}

.layout-two {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 20px;
}

.layout-three {
  display: grid;
  grid-template-columns: minmax(250px, 300px) minmax(0, 1fr) minmax(260px, 320px);
  gap: 20px;
}

.control-stack {
  display: grid;
  gap: 16px;
}

.control-group {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
}

.control-group h3 {
  margin: 0;
  font-size: 1rem;
}

.inline-field,
.field-grid {
  display: grid;
  gap: 10px;
}

.question-overview-shell {
  min-width: 0;
}

.question-overview-panel {
  position: sticky;
  top: 24px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 252, 247, 0.95);
  border: 1px solid rgba(61, 128, 158, 0.18);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.overview-header {
  display: grid;
  gap: 8px;
}

.overview-header .section-title {
  margin-bottom: 0;
}

.overview-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
}

.overview-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.94rem;
}

.overview-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1.5px solid rgba(61, 128, 158, 0.5);
  background: white;
  flex: 0 0 auto;
}

.overview-swatch.is-current {
  border-color: transparent;
  background: linear-gradient(135deg, #3d80c7, #58a8ff);
}

.overview-swatch.is-answered,
.overview-swatch.is-viewed {
  background: rgba(88, 168, 255, 0.14);
  border-color: rgba(61, 128, 199, 0.68);
}

.overview-sections {
  display: grid;
  gap: 18px;
}

.overview-section {
  display: grid;
  gap: 10px;
}

.overview-section-title {
  font-weight: 700;
  color: var(--ink);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 10px;
}

.overview-button {
  appearance: none;
  border: 1.5px solid rgba(61, 128, 199, 0.72);
  border-radius: 12px;
  min-height: 44px;
  padding: 8px 0;
  background: white;
  color: #3d80c7;
  font: inherit;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.overview-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(61, 128, 199, 0.12);
}

.overview-button.is-current {
  border-color: transparent;
  background: linear-gradient(135deg, #3d80c7, #58a8ff);
  color: white;
  box-shadow: 0 12px 22px rgba(61, 128, 199, 0.24);
}

.overview-button.is-answered,
.overview-button.is-viewed {
  background: rgba(88, 168, 255, 0.12);
}

.question-overview-empty {
  padding: 16px;
  border-radius: var(--radius-md);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  border: 1px dashed rgba(61, 128, 158, 0.24);
  line-height: 1.7;
}

.overview-mobile-toggle {
  display: none;
  width: 100%;
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: linear-gradient(135deg, var(--accent-2), #4f8a9f);
  color: white;
  font: inherit;
  box-shadow: 0 12px 24px rgba(36, 93, 111, 0.22);
}

@media (max-width: 1180px) {
  .layout-three {
    grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  }

  .question-overview-shell {
    grid-column: 1 / -1;
  }

  .question-overview-panel {
    position: static;
  }
}

@media (max-width: 820px) {
  body {
    padding-bottom: 174px;
  }

  .layout-three {
    grid-template-columns: minmax(0, 1fr);
  }

  .question-overview-shell {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 14px;
    z-index: 20;
    display: grid;
    gap: 10px;
  }

  .overview-mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .question-overview-panel {
    display: none;
    max-height: min(60vh, 420px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 18px;
  }

  .question-overview-shell.is-open .question-overview-panel {
    display: flex;
  }
}

.field-grid {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(36, 93, 111, 0.16);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

 .question-card {
 display: flex;
 flex-direction: column;
 gap: 0;
 padding: 18px 18px 14px;
}

.question-content-scroll {
  display: grid;
  gap: 10px;
}

.question-bottom-bar {
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  z-index: 20;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
  background: var(--paper);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

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

.bottom-action-row .primary-button {
  background: var(--accent);
  box-shadow: 0 4px 14px rgba(143, 59, 46, 0.22);
}

.bottom-action-row .ghost-button {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
}

.bottom-action-row .secondary-button {
  background: var(--accent-2);
  box-shadow: 0 4px 14px rgba(36, 93, 111, 0.18);
}

.bottom-action-row .remove-wrongbook-button {
  background: linear-gradient(135deg, rgba(36, 93, 111, 0.96), #4f8a9f);
  box-shadow: 0 4px 14px rgba(36, 93, 111, 0.2);
}

.question-footer {
  display: grid;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.question-footer .nav-progress-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-progress-info {
  flex: 1;
  min-width: 120px;
  display: grid;
  gap: 6px;
}

.nav-progress-info .progress-label {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.nav-progress-info .progress-label .muted {
  font-size: 0.82rem;
  font-weight: 400;
}

.nav-progress-info .progress-shell {
  height: 6px;
  margin: 0;
}

.nav-button-group {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.question-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.question-stem {
  font-size: clamp(1rem, 1.8vw, 1.16rem);
  line-height: 1.6;
}

.question-material {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: rgba(36, 93, 111, 0.08);
  border-left: 4px solid var(--accent-2);
  color: var(--muted);
  line-height: 1.65;
}

.options-list,
.fill-blank-list,
.question-list,
.chapter-links,
.tag-list {
  display: grid;
  gap: 8px;
}

.option-item,
.question-list-item,
.chapter-card,
.tag-pill,
.graph-node {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.option-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 9px 10px;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.option-item input {
  width: auto;
  margin-top: 2px;
}

.option-item.is-selected {
  border-color: rgba(143, 59, 46, 0.28);
  background: rgba(143, 59, 46, 0.08);
}

.option-key {
  min-width: 28px;
  font-weight: 700;
  color: var(--accent);
}

.result-banner {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
}

.result-good {
  background: rgba(31, 122, 71, 0.12);
  color: var(--good);
  border: 1px solid rgba(31, 122, 71, 0.18);
}

.result-bad {
  background: rgba(175, 48, 41, 0.1);
  color: var(--bad);
  border: 1px solid rgba(175, 48, 41, 0.16);
}

.answer-detail {
  line-height: 1.8;
  color: var(--muted);
}

.answer-reveal-shell {
  display: grid;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(36, 93, 111, 0.1);
  background: rgba(255, 255, 255, 0.68);
  outline: none;
}

.answer-reveal-content {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
}

.answer-reveal-label {
  color: var(--ink);
  font-weight: 700;
}

.answer-reveal-body {
  color: var(--muted);
  opacity: 0.35;
  filter: blur(7px);
  transition: opacity 0.18s ease, filter 0.18s ease;
  user-select: none;
}

.answer-reveal-shell.is-revealed .answer-reveal-body {
  opacity: 1;
  filter: none;
  user-select: text;
}

.answer-reveal-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid rgba(36, 93, 111, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  color: var(--accent-2);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

@media (hover: hover) {
  .answer-reveal-shell:hover .answer-reveal-body,
  .answer-reveal-shell:focus .answer-reveal-body,
  .answer-reveal-shell:focus-within .answer-reveal-body {
    opacity: 1;
    filter: none;
    user-select: text;
  }
}

.remove-wrongbook-button {
  background: linear-gradient(135deg, rgba(36, 93, 111, 0.96), #4f8a9f);
  color: #fff;
  box-shadow: 0 10px 22px rgba(36, 93, 111, 0.2);
}

.question-footer {
  display: grid;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.question-footer .toolbar-row {
  justify-content: flex-start;
}

.study-actions,
.wrongbook-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.study-actions > button,
.wrongbook-actions > button {
  width: 100%;
}

button:disabled,
a[aria-disabled="true"] {
  opacity: 0.48;
  cursor: not-allowed;
  transform: none !important;
}

.progress-shell {
  height: 12px;
  border-radius: 999px;
  background: rgba(36, 93, 111, 0.08);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
}

.chapter-card {
  padding: 18px;
  display: grid;
  gap: 12px;
}

.chapter-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.chapter-summary {
  display: grid;
  gap: 10px;
  cursor: pointer;
}

details.chapter-card summary {
  list-style: none;
}

details.chapter-card summary::-webkit-details-marker {
  display: none;
}

.section-grid {
  display: grid;
  gap: 12px;
}

.summary-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 8px;
  color: var(--muted);
  line-height: 1.7;
}

.data-pair {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.chapter-card h3,
.question-list-item h3 {
  margin: 0;
}

.question-list-item {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.question-list-item .section-actions {
  margin-top: 6px;
}

.chart-stack {
  display: grid;
  gap: 14px;
}

.bar-chart {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 10px;
  align-items: end;
  min-height: 170px;
}

.bar-column {
  display: grid;
  gap: 8px;
  align-items: end;
  justify-items: center;
}

.bar-track {
  width: 100%;
  min-height: 120px;
  display: flex;
  align-items: flex-end;
  background: linear-gradient(180deg, rgba(36, 93, 111, 0.05), rgba(36, 93, 111, 0.12));
  border-radius: 20px;
  overflow: hidden;
}

.bar-fill {
  width: 100%;
  border-radius: 20px 20px 0 0;
  background: linear-gradient(180deg, var(--accent-soft), var(--accent));
}

.bar-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.mastery-list {
  display: grid;
  gap: 12px;
}

.mastery-row {
  display: grid;
  gap: 8px;
}

.mastery-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
}

.graph-layout {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: 18px;
}

.graph-canvas {
  min-height: 460px;
  padding: 8px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(236, 228, 219, 0.88));
  border: 1px solid var(--line);
}

.graph-detail {
  display: grid;
  gap: 14px;
}

.tag-pill,
.graph-node {
  padding: 10px 12px;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.tag-pill:hover,
.graph-node:hover {
  transform: translateY(-1px);
  border-color: rgba(143, 59, 46, 0.32);
}

.tag-pill.active,
.graph-node.active {
  background: rgba(143, 59, 46, 0.12);
  border-color: rgba(143, 59, 46, 0.34);
}

.empty-card {
  text-align: center;
  color: var(--muted);
}

.fade-in {
  animation: fadeInUp 0.4s ease both;
}

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

@media (max-width: 980px) {
  .layout-two,
  .layout-three,
  .graph-layout {
    grid-template-columns: 1fr;
  }

  .page-shell.has-active-session .layout-two > main.control-stack,
  .page-shell.has-active-session .layout-three > main.control-stack {
    order: 1;
  }

  .page-shell.has-active-session .layout-two > aside.control-stack,
  .page-shell.has-active-session .layout-three > aside.control-stack:first-of-type {
    order: 2;
  }

  .page-shell.has-active-session .layout-three > .question-overview-shell {
    order: 3;
  }
}

@media (max-width: 640px) {
  body {
    padding: 18px 12px 40px;
  }

  .hero,
  .panel,
  .page-card,
  .question-card,
  .graph-card,
  .list-card,
  .empty-card {
    padding: 18px;
  }

  .question-card {
    padding: 16px 16px 12px;
  }
}

@media (max-width: 768px) {
  body {
    background: #f7f3ed;
    padding-bottom: 180px;
  }

  .question-overview-shell {
    bottom: calc(74px + env(safe-area-inset-bottom, 0px));
  }

  .hero::after {
    display: none;
  }

  .hero,
  .panel,
  .page-card,
  .question-card,
  .graph-card,
  .list-card,
  .empty-card,
  .metric-card,
  .chapter-card {
    box-shadow: 0 6px 18px rgba(83, 52, 28, 0.08);
    backdrop-filter: none;
  }

  .fade-in {
    animation: none;
  }

  #study-actions,
  #wrongbook-actions {
    position: sticky;
    bottom: 8px;
    z-index: 24;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 10px;
    border-radius: 18px;
    background: rgba(255, 252, 247, 0.96);
    border: 1px solid rgba(121, 91, 53, 0.12);
    box-shadow: 0 8px 20px rgba(83, 52, 28, 0.12);
  }

  .question-bottom-bar {
    position: sticky;
    bottom: 0;
    z-index: 24;
    padding: 10px 12px 10px;
    border-radius: 20px 20px 0 0;
    background: rgba(255, 252, 247, 0.96);
    border: 1px solid rgba(121, 91, 53, 0.12);
    box-shadow: 0 8px 20px rgba(83, 52, 28, 0.12);
    backdrop-filter: blur(16px);
    margin-left: -12px;
    margin-right: -12px;
    width: calc(100% + 24px);
  }

  .question-actions > button,
  .answer-actions > button,
  .bottom-action-row > button,
  .nav-button-group > button,
  .section-actions > button,
  .section-actions > a {
    min-height: 44px;
    padding: 9px 12px;
    font-size: 0.88rem;
  }

  .bottom-action-row {
    display: flex;
    gap: 8px;
  }

  .bottom-action-row > button {
    flex: 1;
    min-width: 0;
    text-align: center;
  }

  .nav-button-group {
    display: flex;
    gap: 6px;
  }

  .nav-button-group > button {
    flex: 1;
    min-width: 0;
    text-align: center;
  }

  .nav-progress-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }

  .nav-progress-info {
    flex: 1;
    min-width: 80px;
  }

  .question-footer {
    padding-top: 6px;
    gap: 4px;
  }

  .question-content-scroll {
    gap: 8px;
  }

  .question-meta {
    gap: 6px;
  }

  .question-meta .chip {
    min-height: 34px;
    padding: 6px 10px;
    font-size: 0.84rem;
  }

  .question-stem {
    font-size: 0.98rem;
    line-height: 1.5;
  }

  .question-material {
    padding: 10px 12px;
    line-height: 1.55;
  }

  .options-list {
    gap: 6px;
  }

  .option-item {
    gap: 6px;
    padding: 8px 9px;
  }

  .nav-row {
    gap: 10px;
  }

  .hero-meta {
    gap: 8px;
  }

  .answer-reveal-toggle {
    display: inline-flex;
  }

  .overview-mobile-toggle {
    min-height: 40px;
    padding: 10px 14px;
    font-size: 0.86rem;
  }
}