.teacher-brief,
.sight-check,
.lesson-test {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 24px;
}

.teacher-brief {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #eef3f0;
}

.teacher-brief > h2,
.sight-check > h2,
.lesson-test > h2 {
  max-width: 800px;
}

.brief-grid,
.test-strip,
.test-score {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 24px;
  padding: 1px;
  background: var(--line);
}

.brief-grid article {
  padding: 20px;
  background: #fff;
}

.brief-grid span {
  color: var(--green);
  font-weight: 800;
}

.brief-grid p {
  margin-bottom: 0;
  font-family: Georgia, serif;
  font-size: 1.05rem;
}

.brief-rule,
.sight-note {
  padding: 16px 18px;
  border-left: 4px solid var(--gold);
  background: #fff8df;
}

.sight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.sight-grid article {
  padding: 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.bow-diagram {
  position: relative;
  height: 150px;
  margin: 18px 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #f3f5f3;
}

.bow-diagram .stick,
.bow-diagram .hair {
  position: absolute;
  right: 8%;
  left: 8%;
}

.bow-diagram .stick {
  top: 52px;
  height: 38px;
  border-top: 7px solid #3b2a22;
}

.side-view .stick {
  border-radius: 50% 50% 0 0;
  transform: translateY(14px);
}

.bow-diagram .hair {
  top: 92px;
  border-top: 3px solid #b8aea1;
}

.end-view .stick {
  transform: rotate(-2deg);
}

.bow-diagram i,
.bow-diagram b {
  position: absolute;
  bottom: 12px;
  font-size: .75rem;
  font-style: normal;
}

.bow-diagram i { left: 8%; }
.bow-diagram b { right: 8%; }

.test-strip {
  grid-template-columns: repeat(3, 1fr);
  list-style: none;
}

.test-strip li {
  padding: 20px;
  background: #fff;
}

.test-strip strong,
.test-strip span,
.test-score span {
  display: block;
}

.test-strip span {
  margin-top: 8px;
  color: var(--muted);
}

.test-score {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 14px;
}

.test-score span {
  padding: 16px;
  background: #e9f0ed;
  font-weight: 700;
}

@media (max-width: 820px) {
  .brief-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .teacher-brief,
  .sight-check,
  .lesson-test {
    padding: 48px 16px;
  }

  .brief-grid,
  .sight-grid,
  .test-strip,
  .test-score {
    grid-template-columns: 1fr;
  }
}