.article-hero {
  padding: 82px 0 76px;
  color: var(--white);
  background: linear-gradient(120deg, #0c1c0f 0%, var(--green-deep) 62%, #205b26 100%);
}

.article-hero-inner {
  max-width: 1050px;
}

.article-hero h1 {
  max-width: 1000px;
  font-size: clamp(2.65rem, 5.5vw, 5.15rem);
}

.article-summary {
  max-width: 820px;
  color: #dce9dd;
  font-size: 1.22rem;
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 34px;
  padding-top: 22px;
  color: #afd2b2;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
  font-size: 0.86rem;
}

.article-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 760px);
  gap: clamp(48px, 8vw, 110px);
  justify-content: center;
  padding-top: 84px;
  padding-bottom: 104px;
}

.article-index {
  position: sticky;
  top: 112px;
  align-self: start;
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 3px solid var(--green);
  border-bottom: 1px solid var(--line);
}

.article-index p {
  margin: 0 0 7px;
  color: var(--green-dark);
  font-weight: 700;
}

.article-index a {
  color: var(--muted);
  font-size: 0.88rem;
  text-decoration: none;
}

.article-index a:hover {
  color: var(--green-dark);
}

.article-body section {
  scroll-margin-top: 110px;
}

.article-body section + section {
  margin-top: 82px;
  padding-top: 72px;
  border-top: 1px solid var(--line);
}

.article-body h2 {
  margin-bottom: 24px;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.article-body p,
.article-body li {
  color: #435047;
  font-size: 1.04rem;
}

.article-body p + p {
  margin-top: 18px;
}

.answer-box {
  padding: 38px;
  background: var(--soft);
  border-left: 5px solid var(--green);
}

.answer-box h2 {
  font-size: clamp(1.8rem, 3.3vw, 2.75rem);
}

.section-number {
  margin: 0 0 14px;
  color: var(--green-dark) !important;
  font-size: 0.8rem !important;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.situation-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 34px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.situation-list div {
  min-height: 190px;
  padding: 25px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.situation-list strong {
  color: var(--green-deep);
  font-size: 1.05rem;
}

.situation-list p {
  margin-bottom: 0;
  font-size: 0.94rem;
}

.contrast-section {
  color: var(--white);
  margin-inline: 0;
  padding: 50px 42px !important;
  background: #0c1c0f;
  border-top: 0 !important;
}

.contrast-section .section-number,
.contrast-section h2 {
  color: var(--white) !important;
}

.definition-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.definition-grid div {
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.definition-grid strong {
  color: #86e889;
}

.definition-grid p {
  margin-bottom: 0;
  color: #cbd9cd;
  font-size: 0.91rem;
}

.check-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 15px 0 15px 32px;
  border-bottom: 1px solid var(--line);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green-dark);
  font-weight: 700;
}

.note {
  margin-top: 30px;
  padding: 23px 25px;
  background: var(--soft);
}

.note strong {
  color: var(--green-dark);
}

.note p {
  margin: 5px 0 0;
  font-size: 0.95rem;
}

.process-list {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

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

.process-list li > span {
  color: var(--green-dark);
  font-weight: 700;
}

.process-list strong {
  color: var(--ink);
  font-size: 1.08rem;
}

.process-list p {
  margin: 4px 0 0;
  font-size: 0.95rem;
}

.deliverable-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 28px;
}

.deliverable-grid span {
  padding: 15px 17px;
  color: var(--green-deep);
  background: var(--soft);
  border-left: 3px solid var(--green-dark);
  font-weight: 600;
}

.scope-warning {
  margin-top: 28px;
  padding-top: 22px;
  color: var(--green-dark) !important;
  border-top: 1px solid var(--line);
  font-weight: 700;
}

details {
  border-top: 1px solid var(--line);
}

details:last-of-type {
  border-bottom: 1px solid var(--line);
}

summary {
  padding: 22px 34px 22px 0;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
}

details p {
  margin: 0;
  padding: 0 0 24px;
  font-size: 0.96rem !important;
}

.reference-note {
  padding: 30px !important;
  background: var(--soft);
  border-top: 0 !important;
}

.reference-note p {
  font-size: 0.93rem;
}

.reference-note a {
  display: inline-block;
  margin-top: 12px;
  color: var(--green-dark);
  font-weight: 700;
  text-decoration: none;
}

.article-connections {
  padding: 30px !important;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
}

.article-connections h2 {
  margin-bottom: 18px;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
}

.article-connections .connection-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.article-connections a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 14px 16px;
  color: var(--green-dark);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
}

.article-connections a:hover,
.article-connections a:focus-visible {
  background: var(--soft);
  border-color: var(--green);
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-index {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

  .article-index p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .article-hero {
    padding: 64px 0 58px;
  }

  .article-summary {
    font-size: 1.08rem;
  }

  .article-layout {
    padding-top: 58px;
    padding-bottom: 76px;
  }

  .article-index,
  .situation-list,
  .definition-grid,
  .deliverable-grid {
    grid-template-columns: 1fr;
  }

  .situation-list div {
    min-height: auto;
  }

  .answer-box {
    padding: 27px 24px;
  }

  .contrast-section {
    margin-inline: 0;
    padding: 38px 24px !important;
  }

  .article-connections .connection-links {
    grid-template-columns: 1fr;
  }

  .article-body section + section {
    margin-top: 62px;
    padding-top: 54px;
  }
}

.article-body {
  min-width: 0;
  overflow-wrap: anywhere;
}

@media (min-width: 901px) and (max-width: 1100px) {
  .definition-grid {
    grid-template-columns: 1fr;
  }
}