/* ===================================================
   HSK4 Mandarin Zone — Homepage CSS
   homepage.css

   Loaded only by the homepage (index.html). Layered on top of
   common.css. Contains:
     - Three "screens" (home / quiz / results) and their state CSS
     - Quiz UI (question card, options, progress bar, audio)
     - Results UI (score circle, breakdown)
     - Redesigned home-screen sections (hero CTA, path cards,
       toolkit groups, format table, syllabus topics, grammar
       callout, tips, study plan, about)
     - Anchor scroll offset, smooth scroll, focus-visible parity

   This was extracted from an inline <style> block in index.html so
   the rules can be cached across visits and not re-shipped on every
   page load.
   =================================================== */

/* === SCREENS === */
.screen { display: none; }
.screen.active { display: block; }

/* === PAGE OVERRIDES === */
.hero h1 { letter-spacing: -0.5px; }
.hero p { max-width: 520px; }

.cta-banner .btn-primary { background: var(--accent); }
.cta-link {
  color: var(--paper);
  opacity: 0.5;
  font-size: var(--fs-sm);
  display: block;
  margin-top: var(--space-3);
}

/* === TEST GRID — mobile first === */
.test-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}
@media (min-width: 480px) {
  .test-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}
@media (min-width: 768px) {
  .test-grid { gap: var(--space-3); margin-bottom: var(--space-12); }
}

.test-card {
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: var(--space-5);
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  position: relative;
  overflow: hidden;
  min-height: var(--tap);
}
.test-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.test-card:active { transform: translateY(0); }
.test-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}
.test-card:hover::before, .test-card:focus-within::before { opacity: 1; }

.test-card-num {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.test-card-title {
  font-weight: 600;
  font-size: var(--fs-base);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}
.test-card-meta {
  font-size: var(--fs-sm);
  color: var(--stone);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* === QUIZ HEADER ===
   On mobile, sticks just under the site header so progress stays visible
   while scrolling through long questions. */
.quiz-header {
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  position: sticky;
  top: calc(var(--header-h) + env(safe-area-inset-top));
  z-index: 50;
}
@media (min-width: 768px) {
  .quiz-header { padding: var(--space-4) var(--space-5); margin-bottom: var(--space-5); }
}

.quiz-title {
  font-weight: 600;
  font-size: var(--fs-base);
}
.quiz-progress {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1 1 auto;
  justify-content: flex-end;
}
.progress-bar {
  width: 100%;
  max-width: 160px;
  min-width: 80px;
  height: 6px;
  background: var(--mist);
  border-radius: 3px;
  overflow: hidden;
  flex: 1 1 auto;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}
.progress-text {
  font-size: var(--fs-sm);
  color: var(--stone);
  font-weight: 500;
  min-width: 56px;
  text-align: right;
  flex-shrink: 0;
}

/* === QUESTION CARD ===
   Tighter padding on phone — every horizontal pixel matters when reading
   long Chinese passages. */
.question-card {
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-5);
}
@media (min-width: 480px) { .question-card { padding: var(--space-6); } }
@media (min-width: 768px) { .question-card { padding: var(--space-8); } }

.question-type-badge {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: var(--space-4);
}
.badge-listening { background: var(--gold-soft); color: var(--gold); }
.badge-reading { background: var(--jade-soft); color: var(--jade); }
.badge-writing { background: var(--accent-soft); color: var(--accent); }

.question-number {
  font-size: var(--fs-sm);
  color: var(--stone);
  margin-bottom: var(--space-3);
  font-weight: 500;
}

/* Chinese text needs higher minimum size for stroke clarity (e.g. 己/已/巳).
   overflow-wrap: break-word only kicks in for unbreakable strings, so
   occasional English/pinyin glosses don't break mid-character. */
.question-text {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: var(--fs-lg);
  line-height: 1.8;
  margin-bottom: var(--space-6);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

.audio-player { margin-bottom: var(--space-6); }
.audio-player audio {
  width: 100%;
  min-height: 44px;
  border-radius: var(--radius-sm);
  display: block;
}
.audio-note {
  font-size: var(--fs-xs);
  color: var(--stone);
  margin-top: 6px;
  font-style: italic;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
@media (min-width: 480px) { .options-list { gap: 10px; } }

/* Option button: minimum 44px touch target, 16px+ Chinese for clarity. */
.option-btn {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  min-height: var(--tap);
  border: 2px solid var(--mist);
  border-radius: 10px;
  background: white;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  text-align: left;
  font-size: clamp(15px, 0.9rem + 0.3vw, 16px);
  font-family: 'Noto Sans SC', 'DM Sans', sans-serif;
  line-height: 1.5;
  width: 100%;
  overflow-wrap: break-word;
  -webkit-tap-highlight-color: transparent;
}
@media (min-width: 768px) {
  .option-btn { padding: 14px 18px; }
}
.option-btn:hover:not(.disabled) {
  border-color: var(--accent);
  background: #fdf8f7;
}
.option-btn .marker {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  border: 2px solid var(--mist);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--stone);
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  margin-top: 1px;
  flex-shrink: 0;
}
.option-btn:hover:not(.disabled) .marker {
  border-color: var(--accent);
  color: var(--accent);
}
.option-btn.selected { border-color: var(--accent); background: #fdf8f7; }
.option-btn.selected .marker {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}
.option-btn.correct { border-color: var(--correct); background: #f0faf4; }
.option-btn.correct .marker {
  background: var(--correct);
  border-color: var(--correct);
  color: white;
}
.option-btn.wrong { border-color: var(--wrong); background: #fef2f0; }
.option-btn.wrong .marker {
  background: var(--wrong);
  border-color: var(--wrong);
  color: white;
}
.option-btn.disabled { cursor: default; opacity: 0.7; }
.option-btn.disabled.correct, .option-btn.disabled.wrong { opacity: 1; }

/* Nav buttons: stacked & full-width on phone, side-by-side on tablet+.
   Earlier draft made these sticky-bottom on mobile, but the behavior
   was inconsistent (only kicked in on tall pages) and the negative-
   margin breakout collided with safe-area-inset-left on landscape.
   Natural flow is more predictable. footer handles bottom safe-area —
   no need to double-pad here. */
.nav-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.nav-buttons .btn { width: 100%; text-align: center; }
@media (min-width: 768px) {
  .nav-buttons {
    flex-direction: row;
    justify-content: space-between;
  }
  .nav-buttons .btn { width: auto; }
}

/* === RESULTS === */
.results-card {
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-6);
}
@media (min-width: 768px) { .results-card { padding: var(--space-10); } }

.score-circle {
  width: clamp(120px, 30vw, 140px);
  height: clamp(120px, 30vw, 140px);
  border-radius: 50%;
  border: 6px solid var(--mist);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  position: relative;
}
.score-circle.pass { border-color: var(--correct); }
.score-circle.fail { border-color: var(--wrong); }

.score-num { font-size: clamp(30px, 7vw, 36px); font-weight: 700; line-height: 1; }
.score-label { font-size: var(--fs-sm); color: var(--stone); margin-top: 4px; }

.results-msg { font-size: var(--fs-lg); font-weight: 600; margin-bottom: var(--space-2); }
.results-detail { color: var(--stone); font-size: var(--fs-base); margin-bottom: var(--space-6); }

.results-breakdown {
  display: flex;
  justify-content: center;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
@media (min-width: 768px) { .results-breakdown { gap: var(--space-8); } }
.breakdown-item { text-align: center; min-width: 64px; }
.breakdown-num { font-size: var(--fs-2xl); font-weight: 700; }
.breakdown-num.green { color: var(--correct); }
.breakdown-num.red { color: var(--wrong); }
.breakdown-label { font-size: var(--fs-xs); color: var(--stone); text-transform: uppercase; letter-spacing: 0.5px; }

.results-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: stretch;
}
.results-actions .btn { width: 100%; }
@media (min-width: 480px) {
  .results-actions { flex-direction: row; justify-content: center; flex-wrap: wrap; }
  .results-actions .btn { width: auto; }
}

/* ===================================================
   HOME SCREEN — REDESIGNED LAYOUT
   =================================================== */

/* Hero CTA + trust line.
   Stats row gets 5 numbers now, so allow wrapping on mobile. */
.hero-cta {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-5);
}
.hero .trust-line {
  font-size: var(--fs-xs);
  color: var(--stone);
  margin: var(--space-5) auto 0;
  max-width: 520px;
  letter-spacing: 0.2px;
}
/* 4 stats fit at the default 2xl size — earlier override scaled down for
   5-stat density, no longer needed. */
.hero .stats-row .stat { min-width: 72px; }

/* === PATH SECTION ===
   Three-card "where to start" pivot. Sequential steps share a single
   accent — earlier draft used red/jade/gold per card, but those colors
   already mean listening/reading/writing in the question-type badges
   and tip cards, which made the same green carry two unrelated meanings
   on the same page. Order is conveyed by the visible "Step N" eyebrow,
   not by hue. */
.path-section { margin: var(--space-8) 0 var(--space-10); }
.path-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
@media (min-width: 768px) {
  .path-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
}
.path-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-5);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  background: white;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}
.path-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
}
/* Same lift on keyboard focus as on hover, so keyboard users get the
   same visual confirmation. The global :focus-visible outline still
   applies on top. */
.path-card:hover,
.path-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.path-icon { font-size: 28px; line-height: 1; margin-bottom: var(--space-3); }
.path-stage {
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: var(--space-2);
}
.path-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  line-height: 1.3;
}
.path-card p {
  font-size: var(--fs-sm);
  color: var(--stone);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  flex: 1;
}
.path-cta {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent);
}

/* === SECTION INTRO ===
   One-paragraph lede that follows a section-title, explaining what's
   in the section before the user has to scan it. */
.section-intro {
  color: var(--stone);
  line-height: 1.8;
  margin-bottom: var(--space-5);
  max-width: 720px;
  font-size: var(--fs-base);
}

/* === TOOLKIT GROUPS ===
   Three semantic groups (Foundation / Precision / Strategy), each tinted
   a different brand color so the IA is visible at a glance. */
.toolkit-group {
  margin-top: var(--space-5);
  padding: var(--space-5);
  border-radius: var(--radius);
  border: 1px solid var(--mist);
}
@media (min-width: 768px) {
  .toolkit-group { padding: var(--space-6); }
}
.toolkit-group--foundation { background: rgba(216, 243, 220, 0.35); border-color: rgba(45, 106, 79, 0.15); }
.toolkit-group--precision  { background: rgba(254, 243, 205, 0.45); border-color: rgba(139, 102, 16, 0.18); }
.toolkit-group--strategy   { background: rgba(232, 213, 208, 0.4);  border-color: rgba(194, 59, 34, 0.18); }
.toolkit-group-title {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.toolkit-group-sub {
  font-size: var(--fs-sm);
  color: var(--stone);
  margin-bottom: var(--space-4);
}
.toolkit-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 480px) {
  .toolkit-cards { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}
/* Flex-column so cards in the same row align bottoms even when their
   descriptions are different lengths. The <p> has flex: 1 below to push
   itself to fill the gap. */
.toolkit-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.2s;
  height: 100%;
}
.toolkit-card:hover,
.toolkit-card:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.toolkit-card-tag {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.toolkit-group--foundation .toolkit-card-tag { color: var(--jade); }
.toolkit-group--precision  .toolkit-card-tag { color: var(--gold); }
.toolkit-group--strategy   .toolkit-card-tag { color: var(--accent); }
.toolkit-card h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.3;
}
.toolkit-card p {
  font-size: var(--fs-sm);
  color: var(--stone);
  line-height: 1.5;
  margin: 0;
  flex: 1;
}

/* === FORMAT TABLE ===
   Replaces the previous inline-styled table. Rounded corners + drop
   shadow, plus colored section pills (matching the question-type-badge
   palette used in the quiz screen). */
.format-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-4) 0 var(--space-6);
  border-radius: var(--radius);
  border: 1px solid var(--mist);
}
.format-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
  background: white;
  min-width: 540px;
}
.format-table th, .format-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--mist);
}
.format-table th {
  background: var(--paper);
  font-weight: 700;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--stone);
}
.format-table .format-table-total td {
  background: var(--paper);
  font-weight: 700;
  border-bottom: none;
}
.badge-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: var(--fs-xs);
  font-weight: 600;
  white-space: nowrap;
}
.badge-pill.badge-listening { background: var(--gold-soft); color: var(--gold); }
.badge-pill.badge-reading   { background: var(--jade-soft); color: var(--jade); }
.badge-pill.badge-writing   { background: var(--accent-soft); color: var(--accent); }

/* === SUBSECTION TITLE ===
   Smaller heading inside a section (between h2-style section-title and
   the section's content). */
.subsection-title {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-xl);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-3);
}

/* === TOPICS GRID ===
   The 25 communicative tasks are broken into 4 thematic clusters
   (Personal & Social / Daily Life / Education & Work / Society & World)
   so the list scans rather than reads as a wall. */
.topics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}
@media (min-width: 600px) {
  .topics-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
}
.topics-cluster {
  background: white;
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  padding: var(--space-4) var(--space-5);
}
.topics-cluster h4 {
  font-size: var(--fs-base);
  font-weight: 700;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--mist);
}
.topics-cluster ul { list-style: none; padding: 0; margin: 0; }
.topics-cluster li {
  font-size: var(--fs-sm);
  color: var(--stone);
  line-height: 1.9;
}

/* === GRAMMAR CALLOUT ===
   Dark inverse panel for the new-grammar-points list. Inverse contrast
   pulls the eye and signals "important syllabus update". */
.grammar-callout {
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  padding: var(--space-5) var(--space-6);
  margin-top: var(--space-4);
}
.grammar-callout > p {
  line-height: 1.7;
  opacity: 0.85;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
}
.grammar-points {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4);
}
.grammar-points li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: var(--fs-sm);
  line-height: 1.6;
  opacity: 0.9;
}
.grammar-points li:last-child { border-bottom: none; }
.grammar-points strong {
  color: white;
  opacity: 1;
  font-family: 'Noto Sans SC', sans-serif;
  margin-right: 6px;
}
.grammar-callout .learn-more {
  color: white;
  font-weight: 600;
  text-decoration: none;
  font-size: var(--fs-sm);
  display: inline-block;
}
.grammar-callout .learn-more:hover { text-decoration: underline; }

/* === SECTION TIPS ===
   Three pillar cards mapped to listening/reading/writing, color-coded
   with a top-border accent so users can visually find the section
   they care about. */
.tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
@media (min-width: 768px) {
  .tips-grid { grid-template-columns: repeat(3, 1fr); }
}
.tip-card {
  padding: var(--space-5);
  border-radius: var(--radius);
  border: 1px solid var(--mist);
  background: white;
  border-top-width: 3px;
  display: flex;
  flex-direction: column;
}
.tip-card-section {
  display: inline-block;
  align-self: flex-start;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: var(--space-3);
}
.tip-card--listening { border-top-color: var(--gold); }
.tip-card--listening .tip-card-section { background: var(--gold-soft); color: var(--gold); }
.tip-card--reading { border-top-color: var(--jade); }
.tip-card--reading .tip-card-section { background: var(--jade-soft); color: var(--jade); }
.tip-card--writing { border-top-color: var(--accent); }
.tip-card--writing .tip-card-section { background: var(--accent-soft); color: var(--accent); }
.tip-card h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: var(--space-3);
  line-height: 1.4;
}
.tip-card p {
  font-size: var(--fs-sm);
  color: var(--stone);
  line-height: 1.7;
  margin-bottom: var(--space-3);
  flex: 1;
}
.tip-link {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  align-self: flex-start;
}
.tip-link:hover { text-decoration: underline; }

/* === STUDY PLAN TIMELINE ===
   Three phase cards — visually similar to tip-cards but timeline-flavored
   with a numbered "Weeks X–Y" eyebrow. */
.plan-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
@media (min-width: 768px) {
  .plan-timeline { grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
}
.plan-phase {
  padding: var(--space-5);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
  background: white;
}
.plan-phase-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--mist);
}
.plan-week {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
}
.plan-phase-name {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-md);
  font-weight: 700;
}
.plan-phase p {
  font-size: var(--fs-sm);
  color: var(--stone);
  line-height: 1.7;
}

/* === ABOUT MANDARIN ZONE ===
   Trust block. Slightly more prominent than the previous version —
   larger logo, clearer hierarchy, two-button row. */
.about-section { margin: var(--space-10) 0; }
.about-card {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  flex-wrap: wrap;
  padding: var(--space-6);
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: var(--radius);
}
.about-logo {
  height: 64px;
  width: auto;
  max-width: 180px;
  flex-shrink: 0;
  object-fit: contain;
}
.about-body { flex: 1; min-width: 240px; }
.about-body h2,
.about-body h3 {
  font-family: 'Noto Serif SC', serif;
  font-size: var(--fs-xl);
  margin-bottom: var(--space-2);
}
.about-since {
  color: var(--stone);
  font-weight: 400;
  font-size: var(--fs-sm);
}
.about-body p {
  color: var(--stone);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.about-body a { color: var(--accent); text-decoration: none; }
.about-body a:hover { text-decoration: underline; }
.about-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* Tighter section spacing inside the redesigned home screen.
   The default .section-title margin-top is 40px which compounds when
   we have many sections. Keep the rhythm but slightly reduce. */
#home-screen .section-title { margin-top: var(--space-10); }
#home-screen > .hero + section .section-title,
#home-screen > .hero + .path-section .section-title { margin-top: var(--space-6); }

/* === ANCHOR JUMP OFFSET ===
   The header is sticky at 56px. Without scroll-margin-top, clicking a
   #toolkit / #mock-exams link parks the heading directly under the
   header and the user can't see what they jumped to. Apply broadly
   to anchored sections inside home-screen. */
#home-screen [id] {
  scroll-margin-top: calc(var(--header-h) + var(--space-4) + env(safe-area-inset-top));
}

/* Smooth scroll for the in-page anchor jumps, but respect the user's
   reduced-motion preference. (common.css already handles a global
   reduced-motion override for animations/transitions, but
   scroll-behavior is a separate property.) */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

/* === KEYBOARD FOCUS PARITY ===
   The original .test-card hover gave a translateY lift, but
   :focus-within only added the side accent bar — keyboard users
   didn't see the elevation. Mirror the hover treatment on focus so
   mouse and keyboard reach the same visual state. */
.test-card:focus-visible,
.test-card:focus-within {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.tip-card-section,
.toolkit-card-tag,
.plan-week {
  /* Already var(--fs-xs); listed here as the canonical "small caps
     eyebrow" set so future contributors keep them aligned. */
}