.quiz-feature-page { overflow-wrap: anywhere; }
.quiz-feature-page main { max-width: 1120px; }
.quiz-feature-page .header-nav a { display: inline-flex; min-height: 48px; align-items: center; }
.feature-breadcrumb { font-size: 14px; margin-bottom: 24px; color: var(--muted); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.feature-breadcrumb a, .feature-all-link { display: inline-flex; align-items: center; min-height: 48px; }
.feature-hero { max-width: 800px; margin-bottom: 42px; }
.feature-hero h1 { font-size: clamp(28px, 4vw, 40px); }
.feature-hero p:not(.eyebrow) { max-width: 72ch; }
.feature-cta { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 52px; max-width: 100%; padding: 12px 20px; border: 1px solid var(--ink); border-radius: 9px; background: var(--ink); color: var(--paper); font-weight: 600; text-decoration: none; line-height: 1.6; }
.feature-cta:hover { background: var(--accent); color: var(--surface); }
.feature-cta-note { margin-top: 14px; font-size: 14px; color: var(--muted); }
.feature-reading { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 40px; margin-bottom: 48px; align-items: start; }
.feature-section { margin-bottom: 32px; }
.feature-section h2 { font-size: 23px; }
.feature-practice { padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
.feature-practice h2 { font-size: 22px; }
.feature-practice ol { padding-left: 1.4em; margin-bottom: 26px; }
.feature-practice li { padding-left: 4px; margin-bottom: 14px; }
.feature-practice p { margin-bottom: 0; }
.feature-example-section { max-width: 840px; }
.feature-example { margin: 26px 0; border: 1px solid var(--line); border-radius: 12px; padding: 24px; background: var(--surface); }
.feature-example h3 { font-size: 20px; }
.feature-options { display: grid; gap: 10px; margin: 20px 0 24px; padding-left: 2em; list-style-type: upper-alpha; }
.feature-options li { padding: 10px 14px; border: 1px solid var(--line); border-radius: 9px; background: var(--paper); }
.feature-options li::marker { font-weight: 600; }
.feature-answer { border-top: 1px solid var(--line); }
.feature-answer summary { min-height: 52px; padding: 12px 2px; cursor: pointer; font-weight: 600; }
.feature-answer-body { padding-top: 12px; }
.feature-correct { padding: 12px 16px; border-radius: 9px; background: var(--correct-bg); color: var(--correct-ink); }
.feature-sources { margin-top: 24px; padding-top: 18px; border-top: 1px dashed var(--line); }
.feature-sources h4 { font-size: 16px; }
.feature-sources ul { list-style: none; padding: 0; margin: 0; }
.feature-sources li { margin-bottom: 18px; }
.feature-sources a { display: inline-flex; align-items: center; min-height: 48px; }
.feature-sources p { font-size: 14px; margin-bottom: 4px; color: var(--muted); }
.feature-example-id { font-size: 12px; color: var(--muted); margin: 8px 0 0; }
.feature-next { margin: 48px 0; padding: 28px; border-left: 4px solid var(--accent); border-radius: 0 12px 12px 0; background: var(--soft); }
.feature-next .feature-cta { margin-bottom: 20px; }
.feature-next p:last-child { margin-bottom: 0; }
.feature-related { padding-top: 24px; border-top: 1px solid var(--line); }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.feature-card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.feature-card h3 { margin-bottom: 16px; font-size: 23px; font-family: var(--font-title, "Kiwi Maru", serif); font-weight: 500; }
.feature-card h3 a { display: inline-block; min-height: 48px; }
.feature-card p:last-child { margin-bottom: 0; color: var(--muted); }
.feature-subject { margin-bottom: 36px; }
.feature-subject h2 { padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.feature-theme { margin: 26px 0; }
.feature-theme > h3 { font-size: 18px; color: var(--muted); }
.feature-sequence { display: flex; flex-wrap: wrap; gap: 24px; margin: 32px 0; padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--soft); }
.feature-sequence > div { flex: 1 1 260px; min-width: 0; }
.feature-sequence h2 { font-size: 18px; margin-bottom: 8px; }
.feature-sequence ul, .feature-article-sources ul { padding-left: 1.4em; }
.feature-sequence a, .feature-article-sources a { display: inline-flex; align-items: center; min-height: 48px; }
.feature-article-sources { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); }
.feature-article-sources li { margin: 12px 0; }
.feature-article-sources p, .feature-article-sources small { color: var(--muted); }
.feature-figure { margin: 20px 0; max-width: 420px; }
.feature-figure svg { width: 100%; display: block; height: auto; }
.feature-figure figcaption { font-size: 14px; color: var(--muted); }
.feature-figure svg :is(line,circle,polygon,polyline) { fill: none; stroke: currentColor; stroke-width: 2; }
.feature-figure text { font: 14px var(--font-body, sans-serif); fill: currentColor; }
.figure-ink { color: var(--ink); }
.figure-accent { color: var(--accent); }
.figure-muted { color: var(--muted); }
.figure-dash { stroke-dasharray: 5 4; }
@media (max-width: 760px) {
  .feature-reading, .feature-grid { grid-template-columns: minmax(0,1fr); gap: 20px; }
  .feature-hero { margin-bottom: 32px; }
  .feature-example, .feature-practice, .feature-card, .feature-next { padding: 20px; }
  .feature-reading { margin-bottom: 32px; }
}
@media (max-width: 380px) {
  .feature-cta { width: 100%; padding-inline: 12px; }
  .feature-example, .feature-card, .feature-practice, .feature-next { padding: 16px; }
  .feature-options li { padding: 10px; }
}