.study-main {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

.study-header { max-width: 820px; }
.study-header h1 { margin-bottom: 12px; }
.study-eyebrow { margin: 0 0 8px; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; opacity: .62; }
.study-lead { max-width: 72ch; font-size: 18px; line-height: 1.65; opacity: .78; }

.study-grid, .candidate-grid, .study-knowledge-links { list-style: none; padding: 0; }
.study-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-top: 32px; }
.study-card { border: 1px solid currentColor; }
.study-card > a { display: block; height: 100%; padding: 20px; color: inherit; text-decoration: none; }
.study-card h2, .candidate-card h3 { margin: 8px 0; }
.study-card p { line-height: 1.55; }
.study-ja { opacity: .68; }
.study-chip-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.study-chip { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 8px; border: 1px solid currentColor; font-size: 12px; line-height: 1.2; opacity: .72; }

.study-section { margin-top: 40px; }
.study-section > h2, .study-method h2 { margin-bottom: 10px; font-size: 18px; }
.study-method { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.study-method > div, .study-conclusion { padding: 18px; border: 1px solid currentColor; }
.study-method ul { margin: 0; padding-left: 20px; }
.study-knowledge-links { display: flex; flex-wrap: wrap; gap: 10px; }
.study-knowledge-links a { display: flex; flex-direction: column; gap: 3px; padding: 10px 12px; border: 1px solid currentColor; color: inherit; text-decoration: none; }
.study-knowledge-links span { font-size: 12px; opacity: .66; }
.study-section-heading, .candidate-heading { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }

.candidate-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }
.candidate-card { min-width: 0; padding: 18px; border: 1px solid currentColor; }
.candidate-note { margin-bottom: 0; line-height: 1.55; opacity: .76; }
.typography-preview { min-height: 280px; margin-top: 18px; padding: 22px; border: 1px solid currentColor; overflow: auto; }
.typography-preview > p { margin: 0; }
.value-list { display: flex; flex-wrap: wrap; gap: 12px 18px; margin: 24px 0 0; padding-top: 12px; border-top: 1px solid currentColor; font-size: 12px; }
.value-list > div { display: flex; gap: 6px; }
.value-list dt { opacity: .62; }
.value-list dd { margin: 0; }
.composition-preview { position: relative; width: 100%; margin-top: 18px; border: 1px solid currentColor; overflow: hidden; }
.composition-block { position: absolute; display: block; }
.tone-strong { background: currentColor; }
.tone-medium { background: currentColor; opacity: .56; }
.tone-light { background: currentColor; opacity: .22; }

@media (max-width: 640px) {
  .study-main { width: min(100% - 20px, 1200px); }
  .study-section-heading, .candidate-heading { display: block; }
  .candidate-grid { grid-template-columns: 1fr; }
}