main.hvacc-content-page[data-hvacc-content-root] {
  --hvacc-shell-width: min(1180px, calc(100% - 24px));
  --hvacc-shell-radius: 16px;
  --hvacc-ink: #333333;
  --hvacc-copy: #4f5964;
  --hvacc-muted: #6d7782;
  --hvacc-surface: #ffffff;
  --hvacc-surface-soft: #f6fbff;
  --hvacc-accent-soft: #f4f6f9;
  --hvacc-border: #dddddd;
  --hvacc-border-strong: #cccccc;
  --hvacc-brand: #6b92ef;
  --hvacc-brand-deep: #5078d8;
  --hvacc-button-secondary-bg: #eef4ff;
  --hvacc-button-secondary-border: #a9bee9;
  --hvacc-button-secondary-ink: #2850a5;
  --hvacc-button-secondary-hover: #dbe8ff;
  width: var(--hvacc-shell-width);
  margin: 18px auto 48px;
  color: var(--hvacc-ink);
  font-family: Arial, sans-serif;
}

main.hvacc-content-page[data-hvacc-content-root],
main.hvacc-content-page[data-hvacc-content-root] *,
main.hvacc-content-page[data-hvacc-content-root] *::before,
main.hvacc-content-page[data-hvacc-content-root] *::after {
  box-sizing: border-box;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-shell,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-panel,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-section,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-results,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-shell {
  background: var(--hvacc-surface);
  border: 1px solid var(--hvacc-border);
  border-radius: var(--hvacc-shell-radius);
  box-shadow: none;
  margin-bottom: 24px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-shell,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-panel,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-section,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-results,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-shell {
  padding: 18px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--hvacc-accent-soft);
  color: var(--hvacc-brand-deep);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

main.hvacc-content-page[data-hvacc-content-root] h1,
main.hvacc-content-page[data-hvacc-content-root] h2,
main.hvacc-content-page[data-hvacc-content-root] h3 {
  margin: 0 0 10px;
  color: var(--hvacc-ink);
  line-height: 1.15;
}

main.hvacc-content-page[data-hvacc-content-root] h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
}

main.hvacc-content-page[data-hvacc-content-root] h2 {
  font-size: 1.35rem;
}

main.hvacc-content-page[data-hvacc-content-root] p,
main.hvacc-content-page[data-hvacc-content-root] li {
  color: var(--hvacc-copy);
  line-height: 1.55;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-grid,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-two-col,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-three-col,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-tool-grid,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-stat-grid,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-link-grid {
  display: grid;
  gap: 18px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-two-col {
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.85fr);
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-three-col,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-stat-grid,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-link-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-tool-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-card,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-stat,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-link-card,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-related-card,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-step-card {
  background: #ffffff;
  border: 1px solid var(--hvacc-border);
  border-radius: 8px;
  padding: 14px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-field,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-field-wide {
  display: grid;
  gap: 8px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-field-wide {
  grid-column: 1 / -1;
}

main.hvacc-content-page[data-hvacc-content-root] label,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-label {
  font-weight: 700;
  color: var(--hvacc-ink);
}

main.hvacc-content-page[data-hvacc-content-root] input,
main.hvacc-content-page[data-hvacc-content-root] select,
main.hvacc-content-page[data-hvacc-content-root] textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--hvacc-border-strong);
  border-radius: 6px;
  background: #ffffff;
  color: var(--hvacc-ink);
  font: inherit;
  font-size: 16px;
}

main.hvacc-content-page[data-hvacc-content-root] textarea {
  min-height: 110px;
  resize: vertical;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-help,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-small,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-meta {
  color: var(--hvacc-muted);
  font-size: 0.92rem;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacchecks-actuator-button,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 14px;
  min-width: clamp(160px, 20vw, 240px);
  max-width: 280px;
  border: 1px solid var(--hvacc-button-secondary-border);
  border-radius: 8px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  background: var(--hvacc-button-secondary-bg);
  color: var(--hvacc-button-secondary-ink);
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacchecks-actuator-button:hover,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-inline-button:hover {
  background: var(--hvacc-button-secondary-hover);
  border-color: var(--hvacc-button-secondary-border);
  color: var(--hvacc-button-secondary-ink);
}

main.hvacc-content-page[data-hvacc-content-root] .hvacchecks-actuator-button-primary {
  background: var(--hvacc-brand);
  border-color: var(--hvacc-brand);
  color: #ffffff;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacchecks-actuator-button-primary:hover {
  background: var(--hvacc-brand-deep);
  border-color: var(--hvacc-brand-deep);
  color: #ffffff;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-button-row,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-result-value {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--hvacc-ink);
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-results-list,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-howto-list,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-inline-link {
  color: var(--hvacc-brand-deep);
  font-weight: 600;
  text-decoration: none;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-inline-link:hover {
  text-decoration: underline;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell h2 {
  margin-top: 28px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell h2:first-of-type {
  margin-top: 0;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell p + p,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell ul + p,
main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell p + ul {
  margin-top: 18px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-note-box {
  padding: 14px;
  border: 1px solid var(--hvacc-border);
  border-radius: 8px;
  background: var(--hvacc-surface-soft);
  margin-top: 20px;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  aspect-ratio: 1 / 1;
  min-height: 175px;
  padding: 18px 14px;
  text-align: center;
  border: 1px solid #a9bee9;
  border-radius: 8px;
  background: #eef4ff;
  color: #2850a5;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link:hover {
  background: #dbe8ff;
  border-color: #a9bee9;
  color: #2850a5;
  transform: translateY(-2px);
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link strong {
  display: block;
  font-size: 1rem;
  line-height: 1.25;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link span {
  display: block;
  margin-top: 10px;
  font-size: 0.92rem;
  line-height: 1.35;
  color: #4f5964;
}

main.hvacc-content-page[data-hvacc-content-root] .hvacc-note-box strong {
  display: block;
  margin-bottom: 6px;
  color: var(--hvacc-ink);
}

@media (max-width: 900px) {
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-two-col,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-three-col,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-tool-grid,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-stat-grid,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-link-grid,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-form-grid {
    grid-template-columns: 1fr;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  main.hvacc-content-page[data-hvacc-content-root] {
    width: calc(100% - 16px);
    margin: 14px auto 32px;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-shell,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-panel,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-section,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-results,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-article-shell,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-shell {
    padding: 14px;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacchecks-actuator-button,
  main.hvacc-content-page[data-hvacc-content-root] .hvacc-inline-button {
    width: 100%;
    max-width: none;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link {
    aspect-ratio: 1 / 1;
    min-height: 0;
    padding: 14px 12px;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link strong {
    font-size: 0.96rem;
  }

  main.hvacc-content-page[data-hvacc-content-root] .hvacc-category-tool-link span {
    margin-top: 8px;
    font-size: 0.84rem;
    line-height: 1.28;
  }
}