:root {
  --sc-blue: #1769ff;
  --sc-cyan: #41c7f4;
  --sc-ink: #081726;
  --sc-muted: #5c6d82;
  --sc-line: #d7dee6;
  --sc-soft: #f3f6fa;
}

.model-spec-band {
  margin: 0 5vw 7rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--sc-line);
  background: #fff;
}

.model-spec-band article {
  min-height: 150px;
  padding: 2rem;
  border-right: 1px solid var(--sc-line);
}

.model-spec-band article:last-child {
  border-right: 0;
}

.model-spec-band small,
.insight-card small,
.article-meta,
.answer-label {
  color: var(--sc-blue);
  font-family: var(--font-geist-mono), monospace;
  font-size: .76rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.model-spec-band strong {
  display: block;
  margin: 1rem 0 .4rem;
  color: var(--sc-ink);
  font-size: clamp(1.45rem, 2.2vw, 2.2rem);
  font-weight: 560;
}

.model-spec-band p {
  margin: 0;
  color: var(--sc-muted);
  line-height: 1.55;
}

.model-advantage-grid article {
  align-content: start;
  gap: 1.2rem;
}

.model-advantage-grid h3 {
  margin: 2rem 0 .75rem;
  color: var(--sc-ink);
  font-size: clamp(1.15rem, 1.7vw, 1.55rem);
  font-weight: 520;
}

.model-advantage-grid article p {
  margin: 0;
  color: var(--sc-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.model-selection-note {
  margin: 0 5vw 7rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 5vw;
  background: var(--sc-ink);
  color: #fff;
}

.model-selection-note h2 {
  margin: .8rem 0 0;
  font-size: clamp(2rem, 4vw, 4.2rem);
  font-weight: 420;
  letter-spacing: -.045em;
}

.model-selection-note ul {
  margin: 0;
  padding-left: 1.2rem;
  color: #b9c7d6;
  line-height: 1.9;
}

.model-selection-note strong {
  color: #fff;
}

.model-manual {
  margin: 0 5vw 7rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 5vw;
  align-items: end;
  background: #fff;
  border: 1px solid var(--sc-line);
}

.model-manual h2 {
  margin: .8rem 0 0;
  max-width: 680px;
  color: var(--sc-ink);
  font-size: clamp(2rem, 4vw, 4.2rem);
  font-weight: 420;
  line-height: 1.05;
  letter-spacing: -.045em;
}

.model-manual > div:last-child p {
  margin: 0;
  max-width: 720px;
  color: var(--sc-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.model-manual a {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 1rem 1.35rem;
  background: var(--sc-blue);
  color: #fff;
  font-size: .85rem;
  font-weight: 650;
}

.model-manual small {
  display: block;
  margin-top: 1rem;
  color: #8491a0;
  font-size: .72rem;
}

.insights-page,
.article-page {
  background: #fff;
  color: var(--sc-ink);
}

.insights-hero,
.article-hero {
  margin: 0 5vw;
  padding: clamp(4rem, 9vw, 9rem) 0 clamp(3rem, 7vw, 6rem);
  border-bottom: 1px solid var(--sc-line);
}

.insights-hero {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 8vw;
  align-items: end;
}

.insights-hero h1,
.article-hero h1 {
  max-width: 1050px;
  margin: 1rem 0 0;
  font-size: clamp(3rem, 7.2vw, 8rem);
  font-weight: 390;
  line-height: .96;
  letter-spacing: -.065em;
}

.insights-hero > p,
.article-hero .lede {
  margin: 0;
  color: var(--sc-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.7;
}

.insight-grid {
  margin: 0 5vw 7rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-left: 1px solid var(--sc-line);
}

.insight-card {
  min-height: 380px;
  padding: clamp(2rem, 4vw, 4rem);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--sc-line);
  border-bottom: 1px solid var(--sc-line);
  color: inherit;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
}

.insight-card:nth-child(-n+2) {
  border-top: 1px solid var(--sc-line);
}

.insight-card:hover {
  background: var(--sc-ink);
  color: #fff;
}

.insight-card h2 {
  margin: auto 0 1rem;
  font-size: clamp(2rem, 3.6vw, 4rem);
  font-weight: 420;
  letter-spacing: -.045em;
}

.insight-card p {
  max-width: 44rem;
  margin: 0;
  color: var(--sc-muted);
  line-height: 1.65;
}

.insight-card:hover p {
  color: #b9c7d6;
}

.article-hero .article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem 2rem;
  margin-bottom: 1.5rem;
}

.article-hero .lede {
  max-width: 850px;
  margin-top: 2.5rem;
}

.article-layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 7rem) 5vw;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(2.5rem, 7vw, 8rem);
}

.article-toc {
  position: sticky;
  top: 2rem;
  align-self: start;
  padding-top: .4rem;
}

.article-toc p {
  margin: 0 0 1rem;
  color: var(--sc-blue);
  font-family: var(--font-geist-mono), monospace;
  font-size: .75rem;
  letter-spacing: .12em;
}

.article-toc a {
  display: block;
  padding: .6rem 0;
  border-bottom: 1px solid var(--sc-line);
  color: var(--sc-muted);
  text-decoration: none;
  font-size: .9rem;
}

.article-body {
  min-width: 0;
}

.answer-box {
  margin-bottom: 4.5rem;
  padding: clamp(2rem, 4vw, 3.5rem);
  border-left: 4px solid var(--sc-cyan);
  background: var(--sc-soft);
}

.answer-box h2 {
  margin: .8rem 0 1rem;
}

.article-body section {
  margin: 0 0 4.5rem;
  scroll-margin-top: 2rem;
}

.article-body h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 3.7vw, 3.8rem);
  font-weight: 440;
  letter-spacing: -.045em;
  line-height: 1.06;
}

.article-body h3 {
  margin: 2rem 0 .7rem;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 550;
}

.article-body p,
.article-body li {
  color: #42566c;
  font-size: 1.06rem;
  line-height: 1.85;
}

.article-body ul,
.article-body ol {
  padding-left: 1.35rem;
}

.article-body table {
  width: 100%;
  margin: 2rem 0;
  border-collapse: collapse;
}

.article-body th,
.article-body td {
  padding: 1rem;
  border: 1px solid var(--sc-line);
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: var(--sc-soft);
  font-weight: 560;
}

.faq-item {
  padding: 1.6rem 0;
  border-top: 1px solid var(--sc-line);
}

.faq-item:last-child {
  border-bottom: 1px solid var(--sc-line);
}

.faq-item h3 {
  margin: 0 0 .6rem;
}

.article-cta {
  padding: clamp(2rem, 5vw, 4rem);
  background: #0d57d7;
  color: #fff;
}

.article-cta h2,
.article-cta p {
  color: #fff;
}

.article-cta a {
  display: inline-block;
  margin-top: 1rem;
  padding: 1rem 1.35rem;
  background: #fff;
  color: #0d57d7;
  text-decoration: none;
  font-weight: 650;
}

@media (max-width: 800px) {
  .model-spec-band,
  .insights-hero,
  .article-layout,
  .model-selection-note,
  .model-manual {
    grid-template-columns: 1fr;
  }

  .model-spec-band {
    margin-bottom: 4rem;
  }

  .model-spec-band article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--sc-line);
  }

  .model-spec-band article:last-child {
    border-bottom: 0;
  }

  .insight-grid {
    grid-template-columns: 1fr;
  }

  .insight-card,
  .insight-card:nth-child(-n+2) {
    min-height: 300px;
    border-top: 0;
  }

  .insight-card:first-child {
    border-top: 1px solid var(--sc-line);
  }

  .article-toc {
    position: static;
  }
}

/* Editorial reading layout for pump selection guides */
.article-page .article-hero {
  width: min(100%, 1380px);
  margin: 0 auto;
  padding: clamp(5rem, 8vw, 8.5rem) clamp(1.5rem, 4vw, 4.5rem) clamp(3.5rem, 6vw, 5.5rem);
}

.article-page .article-hero h1 {
  max-width: 1120px;
  margin-top: 1.35rem;
  font-size: clamp(3.2rem, 6.4vw, 7rem);
  line-height: .98;
}

.article-page .article-hero .lede {
  max-width: 900px;
  margin-top: 2.25rem;
  font-size: clamp(1.05rem, 1.45vw, 1.3rem);
  line-height: 1.8;
}

.article-page .article-layout {
  width: min(100%, 1240px);
  margin: 0 auto;
  padding: clamp(4.5rem, 7vw, 7.5rem) clamp(1.5rem, 4vw, 4rem) clamp(6rem, 9vw, 9rem);
  grid-template-columns: 220px minmax(0, 820px);
  justify-content: center;
  gap: clamp(3.5rem, 7vw, 7rem);
}

.article-page .article-toc {
  top: 7rem;
}

.article-page .article-toc a {
  padding: .78rem 0;
  line-height: 1.45;
}

.article-page .article-body {
  width: 100%;
  max-width: 820px;
}

.article-page .article-body section {
  margin-bottom: clamp(4rem, 7vw, 6rem);
}

.article-page .article-body h2 {
  margin-bottom: 1.65rem;
  line-height: 1.1;
}

.article-page .article-body h3 {
  margin-top: 2.25rem;
  margin-bottom: .85rem;
  line-height: 1.35;
}

.article-page .article-body p {
  max-width: 76ch;
  margin: 0 0 1.45rem;
  font-size: 1.06rem;
  line-height: 1.9;
}

.article-page .article-body p:last-child {
  margin-bottom: 0;
}

.article-page .article-body ul,
.article-page .article-body ol {
  margin: 1.25rem 0 1.75rem;
  padding-left: 1.4rem;
}

.article-page .article-body li {
  margin-bottom: .75rem;
  line-height: 1.8;
}

.article-page .article-body table {
  margin: 2.25rem 0 3rem;
  font-size: .98rem;
  line-height: 1.65;
}

.article-page .article-body th,
.article-page .article-body td {
  padding: 1.15rem 1.25rem;
}

.article-page .answer-box {
  margin-bottom: 5.5rem;
  padding: clamp(2.25rem, 4vw, 3.75rem);
}

.article-page .answer-box h2 {
  margin-top: .85rem;
}

.article-page .faq-item {
  padding: 2rem 0;
}

.article-page .faq-item h3 {
  margin-top: 0;
}

.article-page .article-cta {
  margin-top: 1rem;
  padding: clamp(2.5rem, 5vw, 4.5rem);
}

@media (max-width: 900px) {
  .article-page .article-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .article-page .article-toc {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 1.5rem;
  }

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

@media (max-width: 620px) {
  .article-page .article-hero {
    padding: 3.8rem 1.35rem 3.2rem;
  }

  .article-page .article-hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.5rem);
  }

  .article-page .article-layout {
    padding: 3.75rem 1.35rem 5rem;
  }

  .article-page .article-toc {
    grid-template-columns: 1fr;
  }

  .article-page .article-body p {
    font-size: 1rem;
    line-height: 1.82;
  }

  .article-page .article-body th,
  .article-page .article-body td {
    padding: .9rem;
  }

  .article-page .article-body table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}