.study-plan-hero {
  border-bottom: 1px solid var(--line);
}

.study-plan-title-sub {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.72em;
}

.study-plan-toc {
  margin: 34px 0 0;
  padding: 24px 28px;
  border-left: 4px solid var(--accent-blue);
  background: var(--mist);
}

.study-plan-toc p {
  margin: 0;
  color: var(--accent-blue);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.study-plan-toc ol {
  display: grid;
  gap: 6px;
  margin: 12px 0 0;
  padding-left: 1.4em;
}

.study-priority-list {
  display: grid;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.study-priority-list > li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.study-priority-list > li > span {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 900;
}

.study-priority-list h3,
.duration-plan h3,
.weekly-plan h3,
.plan-choice-note h3,
.checklist-layout h3 {
  margin: 0;
}

.study-priority-list p {
  margin: 6px 0 0;
}

.duration-plan {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 38px;
  margin-top: 36px;
  padding: 32px 0;
  border-top: 2px solid var(--accent-blue);
}

.duration-plan-heading p {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
}

.duration-plan-heading h3 {
  font-size: 1.35rem;
}

.duration-plan-heading span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.duration-plan ol {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.duration-plan li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.duration-plan li:first-child {
  padding-top: 0;
}

.duration-plan li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.duration-plan strong {
  color: var(--accent-blue);
}

.duration-plan li p {
  margin: 0;
}

.duration-plan-three {
  border-top-color: var(--accent-violet);
}

.duration-plan-three strong {
  color: var(--accent-violet);
}

.duration-plan-one {
  border-top-color: var(--accent);
}

.duration-plan-one strong {
  color: var(--accent-dark);
}

.plan-choice-note,
.study-note {
  margin-top: 30px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.plan-choice-note p,
.study-note {
  color: var(--muted);
}

.plan-choice-note p {
  margin: 8px 0 0;
}

.weekly-plan,
.checklist-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.weekly-plan > div,
.checklist-layout > section {
  padding: 28px;
  background: var(--surface);
}

.weekly-label {
  margin: 0 0 6px;
  color: var(--accent-blue);
  font-size: 0.82rem;
  font-weight: 900;
}

.weekly-plan ul,
.checklist-layout ul {
  margin: 18px 0 0;
}

.study-note {
  font-size: 0.92rem;
}

.defer-list {
  display: grid;
  margin-top: 28px;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.defer-list li {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.defer-list span {
  color: var(--muted);
}

@media (max-width: 680px) {
  .study-plan-toc {
    padding: 20px;
  }

  .study-priority-list > li {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .duration-plan {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .duration-plan li {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 12px;
  }

  .weekly-plan,
  .checklist-layout {
    grid-template-columns: 1fr;
  }

  .defer-list li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}