.content-section { padding: 56px 0; background: #fff; }
.content-section:nth-of-type(even) { background: #f5f8fe; }
.content-section h2 { color: #0b1b33; font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.4; margin-bottom: 20px; }
.content-section h3 { color: #0b1b33; font-size: 1.15rem; line-height: 1.5; margin-bottom: 10px; }
.content-section p { margin-bottom: 16px; color: #475569; }
.content-section ul, .answer-box ul { padding-left: 22px; margin: 12px 0; }
.content-section li { margin-bottom: 8px; }
.content-section a, .answer-box a, .data-table a { color: #1d4ed8; text-decoration: underline; text-underline-offset: 3px; }
.answer-box { padding: 22px 24px; background: #eef4ff; border-left: 4px solid #2563eb; border-radius: 12px; margin: 20px 0; }
.answer-box p:last-child { margin-bottom: 0; }
.answer-box h2 { font-size: 1.3rem; margin-bottom: 8px; }
.data-table { overflow-x: auto; margin: 20px 0; border: 1px solid #dce5f0; border-radius: 12px; }
.data-table table { border-collapse: collapse; width: 100%; min-width: 580px; background: #fff; font-size: 0.95rem; }
.data-table caption { padding: 14px 16px; text-align: left; color: #0b1b33; font-weight: 600; background: #eef4ff; }
.data-table th, .data-table td { text-align: left; vertical-align: top; padding: 14px 16px; border-top: 1px solid #dce5f0; }
.data-table th { color: #0b1b33; background: #f8faff; }
.data-table:focus-visible { outline: 3px solid #2563eb; outline-offset: 3px; }
.task-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.task-card { min-width: 0; padding: 24px; background: #fff; border: 1px solid #e3eaf4; border-radius: 16px; }
.task-card a { display: inline-flex; min-height: 44px; align-items: center; font-weight: 600; }
.media-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; align-items: start; }
.reference-media { margin: 20px 0; min-width: 0; }
.reference-media img { display: block; width: 100%; height: auto; object-fit: contain; border: 1px solid #e3eaf4; border-radius: 16px; background: #fff; }
.reference-media figcaption { margin-top: 12px; color: #586b83; font-size: 0.9rem; line-height: 1.7; }
.source-note { margin-top: 22px; padding: 18px 22px; background: #f4f7fc; border: 1px solid #dce5f0; border-radius: 12px; font-size: 0.95rem; }
.source-note strong { color: #0b1b33; }
.source-note p { margin-top: 8px; margin-bottom: 0; }
.tutorial-steps { padding-left: 28px; margin: 20px 0; }
.tutorial-step { padding: 20px 24px; margin: 0 0 20px; border: 1px solid #dce5f0; border-radius: 14px; background: #fff; }
.tutorial-step::marker { color: #2563eb; font-weight: 700; }
.tutorial-step .verify { margin-top: 14px; margin-bottom: 0; padding: 12px 14px; background: #edf5ff; border-radius: 8px; }
.verification-checklist { display: grid; gap: 10px; }
.verification-checklist label { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 10px 14px; border: 1px solid #dce5f0; border-radius: 10px; background: #fff; cursor: pointer; }
.verification-checklist input { width: 20px; height: 20px; accent-color: #2563eb; flex-shrink: 0; }
.review-card h3 { font-size: 1.15rem; margin-bottom: 14px; }
.review-card p { color: #475569; line-height: 1.8; }
@media(max-width: 992px) { .media-grid { grid-template-columns: minmax(0, 1fr); } }
@media(max-width: 768px) { .content-section { padding: 44px 0; } .task-grid { grid-template-columns: minmax(0, 1fr); } .answer-box { padding: 18px; } .tutorial-step { padding: 18px; } }