/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 · genre: modern-minimal · macrostructure: Catalogue
 * theme: custom · vibe: "quiet premium product editorial" · paper: oklch(97% 0.009 82) · accent: oklch(45% 0.105 237)
 * display: Hiragino Kaku Gothic ProN · body: Hiragino Kaku Gothic ProN · axes: light / geometric-sans / cool-blue
 * enrichment: none · nav: existing QOL · footer: existing QOL · context: explicit · contrast: pass · mobile: pass
 */
@import url("/tokens.css");

html:has(.before-installation-page),
.before-installation-page {
  overflow-x: clip;
}

.before-installation-page {
  color: var(--qol-color-text);
  background: var(--qol-color-paper);
  font-family: var(--qol-font-body);
}

.before-installation-page * {
  box-sizing: border-box;
}

.before-installation-page a:focus-visible,
.before-installation-page summary:focus-visible {
  outline: 3px solid var(--qol-color-focus);
  outline-offset: 4px;
}

.before-installation-page .guide-container {
  width: min(calc(100% - 2rem), var(--qol-content-width));
  margin-inline: auto;
}

.before-installation-page .guide-reading {
  max-width: var(--qol-reading-width);
}

.before-installation-page .guide-breadcrumb {
  padding-top: 7.5rem;
  padding-bottom: var(--qol-space-4);
  font-size: 0.875rem;
}

.before-installation-page .guide-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qol-space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.before-installation-page .guide-breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: var(--qol-space-2);
  color: var(--qol-color-muted);
}

.before-installation-page .guide-breadcrumb a,
.before-installation-page .reason-link,
.before-installation-page .source-note a {
  color: var(--qol-color-accent-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

.before-installation-page .guide-hero {
  padding: var(--qol-space-6) 0;
  border-bottom: 1px solid var(--qol-color-line);
}

.before-installation-page .guide-hero h1 {
  max-width: 58rem;
  margin: 0;
  color: var(--qol-color-ink);
  font-family: var(--qol-font-display);
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-style: normal;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.02em;
  min-width: 0;
  overflow-wrap: anywhere;
}

.before-installation-page .guide-lead {
  max-width: 47rem;
  margin: var(--qol-space-6) 0 0;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 2;
}

.before-installation-page .article-summary {
  max-width: var(--qol-reading-width);
  padding: var(--qol-space-5);
  margin-top: var(--qol-space-6);
  color: var(--qol-color-text);
  background: var(--qol-color-accent-soft);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
}

.before-installation-page .article-summary h2 {
  margin: 0 0 var(--qol-space-3);
  color: var(--qol-color-ink);
  font-family: var(--qol-font-body);
  font-size: 1.25rem;
  font-style: normal;
}

.before-installation-page .article-summary ul {
  padding-left: 1.4rem;
  margin: 0;
}

.before-installation-page .article-summary li {
  margin-top: var(--qol-space-2);
  line-height: 1.75;
}

.before-installation-page .guide-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qol-space-3) var(--qol-space-5);
  padding: 0;
  margin: var(--qol-space-5) 0 0;
  color: var(--qol-color-muted);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
  list-style: none;
}

.before-installation-page .guide-intro {
  padding: var(--qol-space-8) 0;
}

.before-installation-page .guide-intro h2,
.before-installation-page .reason-section > .guide-container > h2,
.before-installation-page .guide-faq h2,
.before-installation-page .final-cta h2 {
  margin: 0;
  color: var(--qol-color-ink);
  font-family: var(--qol-font-display);
  font-style: normal;
  font-weight: 700;
  line-height: 1.35;
}

.before-installation-page .guide-intro h2,
.before-installation-page .reason-section > .guide-container > h2,
.before-installation-page .guide-faq h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

.before-installation-page .guide-intro p,
.before-installation-page .points-note,
.before-installation-page .reason-copy p,
.before-installation-page .guide-faq p,
.before-installation-page .source-note {
  line-height: 1.9;
}

.before-installation-page .guide-intro p {
  margin: var(--qol-space-5) 0 0;
}

.before-installation-page .guide-index {
  margin-top: var(--qol-space-6);
  padding: var(--qol-space-5) 0;
  border-block: 1px solid var(--qol-color-line);
}

.before-installation-page .guide-index strong {
  display: block;
  margin-bottom: var(--qol-space-3);
  color: var(--qol-color-ink);
}

.before-installation-page .guide-index ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--qol-space-2) var(--qol-space-6);
  padding-left: 1.5rem;
  margin: 0;
}

.before-installation-page .guide-index a {
  color: var(--qol-color-text);
  text-underline-offset: 0.2em;
}

.before-installation-page .reason-section {
  padding: 0 0 var(--qol-space-8);
}

.before-installation-page .points-note {
  max-width: var(--qol-reading-width);
  margin: var(--qol-space-4) 0 var(--qol-space-6);
  color: var(--qol-color-muted);
}

.before-installation-page .reason-list {
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--qol-color-line);
  list-style: none;
}

.before-installation-page .reason-item {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: var(--qol-space-6);
  padding: var(--qol-space-7) 0;
  border-bottom: 1px solid var(--qol-color-line);
}

.before-installation-page .reason-number {
  color: var(--qol-color-accent);
  font-family: var(--qol-font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
}

.before-installation-page .reason-number span {
  display: block;
  margin-bottom: var(--qol-space-2);
  font-size: 3rem;
  font-variant-numeric: tabular-nums;
}

.before-installation-page .reason-copy h3 {
  margin: 0 0 var(--qol-space-4);
  color: var(--qol-color-ink);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.45;
}

.before-installation-page .reason-copy p {
  max-width: var(--qol-reading-width);
  margin: 0 0 var(--qol-space-4);
}

.before-installation-page .reason-copy strong {
  color: var(--qol-color-ink);
}

.before-installation-page .reason-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
  white-space: nowrap;
}

.before-installation-page .inline-guide-card {
  max-width: var(--qol-reading-width);
  padding: var(--qol-space-4) var(--qol-space-5);
  margin-top: var(--qol-space-5);
  background: var(--qol-color-surface);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
}

.before-installation-page .inline-guide-card strong {
  display: block;
  margin-bottom: var(--qol-space-2);
}

.before-installation-page .inline-guide-card p {
  margin-bottom: var(--qol-space-2);
}

.before-installation-page .inline-guide-card a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--qol-color-accent-strong);
  font-weight: 700;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
  white-space: nowrap;
}

.before-installation-page .reason-link:hover,
.before-installation-page .inline-guide-card a:hover,
.before-installation-page .guide-related a:hover,
.before-installation-page .article-about a:hover,
.before-installation-page .guide-breadcrumb a:hover,
.before-installation-page .guide-index a:hover,
.before-installation-page .source-note a:hover {
  color: var(--qol-color-accent);
  text-decoration-thickness: 2px;
}

.before-installation-page .reason-link:active,
.before-installation-page .inline-guide-card a:active,
.before-installation-page .guide-related a:active,
.before-installation-page .article-about a:active,
.before-installation-page .guide-breadcrumb a:active,
.before-installation-page .guide-index a:active,
.before-installation-page .source-note a:active {
  color: var(--qol-color-ink);
}

.before-installation-page a[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.before-installation-page .final-cta {
  padding: var(--qol-space-7);
  margin-bottom: var(--qol-space-8);
  color: var(--qol-color-on-accent);
  background: var(--qol-color-accent-strong);
  border-radius: var(--qol-radius-md);
}

.before-installation-page .final-cta h2 {
  max-width: 42rem;
  color: var(--qol-color-on-accent);
  font-size: clamp(1.75rem, 4vw, 3rem);
}

.before-installation-page .final-cta p {
  max-width: 42rem;
  margin: var(--qol-space-4) 0 var(--qol-space-5);
  color: var(--qol-color-on-accent) !important;
  line-height: 1.8;
}

.before-installation-page .primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.25rem;
  color: var(--qol-color-accent-strong);
  background: var(--qol-color-surface);
  border: 2px solid var(--qol-color-surface);
  border-radius: var(--qol-radius-sm);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.before-installation-page .primary-cta:hover {
  color: var(--qol-color-ink);
  background: var(--qol-color-accent-soft);
}

.before-installation-page .primary-cta:active {
  background: var(--qol-color-line);
}

.before-installation-page .primary-cta[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.before-installation-page .guide-faq {
  padding-bottom: var(--qol-space-8);
}

.before-installation-page .guide-advice,
.before-installation-page .guide-related,
.before-installation-page .article-about {
  padding-bottom: var(--qol-space-8);
}

.before-installation-page .guide-advice h2,
.before-installation-page .guide-related h2,
.before-installation-page .article-about h2 {
  margin: 0 0 var(--qol-space-5);
  color: var(--qol-color-ink);
  font-family: var(--qol-font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-style: normal;
  line-height: 1.35;
}

.before-installation-page .guide-advice p,
.before-installation-page .guide-advice li,
.before-installation-page .article-about dd {
  line-height: 1.9;
}

.before-installation-page .guide-advice ul {
  padding-left: 1.4rem;
  margin: var(--qol-space-4) 0;
}

.before-installation-page .guide-related ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--qol-space-3) var(--qol-space-6);
  padding: var(--qol-space-5) 0;
  margin: 0;
  border-block: 1px solid var(--qol-color-line);
  list-style: none;
}

.before-installation-page .guide-related a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--qol-color-accent-strong);
  font-weight: 700;
  text-underline-offset: 0.25em;
}

.before-installation-page .article-about dl {
  margin: 0;
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page .article-about dl div {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: var(--qol-space-4);
  padding: var(--qol-space-4) 0;
  border-bottom: 1px solid var(--qol-color-line);
}

.before-installation-page .article-about dt {
  color: var(--qol-color-ink);
  font-weight: 800;
}

.before-installation-page .article-about dd {
  margin: 0;
}

.before-installation-page .article-about a {
  color: var(--qol-color-accent-strong);
  text-underline-offset: 0.25em;
}

.before-installation-page .faq-list {
  margin-top: var(--qol-space-6);
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page .faq-list details {
  border-bottom: 1px solid var(--qol-color-line);
}

.before-installation-page .faq-list summary {
  min-height: 60px;
  padding: var(--qol-space-5) 2.5rem var(--qol-space-5) 0;
  color: var(--qol-color-ink);
  font-weight: 800;
  line-height: 1.65;
  cursor: pointer;
}

.before-installation-page .faq-list summary:hover {
  color: var(--qol-color-accent);
}

.before-installation-page .faq-list summary:active {
  color: var(--qol-color-ink);
}

.before-installation-page .faq-list details p {
  max-width: var(--qol-reading-width);
  padding: 0 0 var(--qol-space-5);
  margin: 0;
}

.before-installation-page .source-note {
  padding: var(--qol-space-5);
  margin: 0 0 var(--qol-space-8);
  color: var(--qol-color-muted);
  background: var(--qol-color-accent-soft);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
  font-size: 0.9rem;
}

@media (max-width: 700px) {
  .before-installation-page .guide-breadcrumb {
    padding-top: 6.5rem;
  }

  .before-installation-page .guide-hero,
  .before-installation-page .guide-intro {
    padding-block: var(--qol-space-7);
  }

  .before-installation-page .guide-index ol {
    grid-template-columns: 1fr;
  }

  .before-installation-page .guide-related ul {
    grid-template-columns: 1fr;
  }

  .before-installation-page .article-about dl div {
    grid-template-columns: 1fr;
    gap: var(--qol-space-2);
  }

  .before-installation-page .reason-item {
    grid-template-columns: 1fr;
    gap: var(--qol-space-4);
    padding: var(--qol-space-6) 0;
  }

  .before-installation-page .reason-number {
    display: flex;
    align-items: baseline;
    gap: var(--qol-space-2);
  }

  .before-installation-page .reason-number span {
    display: inline;
    margin: 0;
    font-size: 2.25rem;
  }

  .before-installation-page .final-cta {
    padding: var(--qol-space-6) var(--qol-space-5);
  }
}

/* Brand-role refinement: QOL navy for primary actions, blue for links,
 * and pale blue for supporting information. */
.before-installation-page.premium-editorial.quiet-editorial
  .reason-copy
  > p:nth-of-type(2) {
  padding: var(--qol-space-3) var(--qol-space-4);
  margin-top: var(--qol-space-4);
  color: var(--qol-color-text);
  background: var(--qol-color-hero-start);
  border-left: 3px solid var(--qol-color-accent);
}

.before-installation-page.premium-editorial.quiet-editorial .reason-copy h3 {
  color: var(--qol-color-ink);
}

.before-installation-page.premium-editorial.quiet-editorial .reason-number {
  color: var(--qol-color-accent);
}

.before-installation-page.premium-editorial.quiet-editorial
  .reason-copy
  > .reason-link,
.before-installation-page.premium-editorial.quiet-editorial
  .reason-action
  .reason-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 52px;
  padding: var(--qol-space-3) var(--qol-space-5);
  margin-top: var(--qol-space-5);
  color: var(--qol-color-accent-strong);
  background: var(--qol-color-accent-soft);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
}

.before-installation-page.premium-editorial.quiet-editorial
  .reason-copy
  > .reason-link:hover,
.before-installation-page.premium-editorial.quiet-editorial
  .reason-action
  .reason-link:hover {
  color: var(--qol-color-on-accent);
  background: var(--qol-color-accent-strong);
  border-color: var(--qol-color-accent-strong);
}

.before-installation-page.premium-editorial.quiet-editorial .reason-action {
  padding: var(--qol-space-5);
  margin-top: var(--qol-space-5);
  background: var(--qol-color-hero-start);
  border: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial.quiet-editorial
  .reason-action
  > strong {
  display: block;
  color: var(--qol-color-ink);
  font-size: 1.125rem;
}

.before-installation-page.premium-editorial.quiet-editorial
  .reason-action
  > p {
  margin-top: var(--qol-space-2);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.before-installation-page.premium-editorial.quiet-editorial
  .reason-action
  .reason-link {
  margin-top: var(--qol-space-4);
}

.before-installation-page.premium-editorial.quiet-editorial
  .inline-guide-card
  a,
.before-installation-page.premium-editorial.quiet-editorial
  .article-about
  a,
.before-installation-page.premium-editorial.quiet-editorial
  .source-note
  a {
  color: var(--qol-color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.before-installation-page.premium-editorial.quiet-editorial
  .inline-guide-card
  a:hover,
.before-installation-page.premium-editorial.quiet-editorial
  .article-about
  a:hover,
.before-installation-page.premium-editorial.quiet-editorial
  .source-note
  a:hover {
  color: var(--qol-color-accent-strong);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  tbody
  th {
  color: var(--qol-color-accent);
  font-weight: 700;
  transition: background-color var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  tbody
  td {
  transition: background-color var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  tbody
  tr:hover
  > * {
  background: var(--qol-color-accent-soft);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  a {
  cursor: pointer;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-advice {
  background: var(--qol-color-surface);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-advice
  .guide-reading {
  padding: var(--qol-space-7);
  background: var(--qol-color-hero-start);
  border-left: 4px solid var(--qol-color-accent);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-advice
  h2 {
  color: var(--qol-color-ink);
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-related
  ul {
  gap: var(--qol-space-3);
  border: 0;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-related
  a {
  min-height: 64px;
  padding: var(--qol-space-3) 3rem var(--qol-space-3)
    var(--qol-space-4);
  color: var(--qol-color-ink);
  background: var(--qol-color-surface);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
  cursor: pointer;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-related
  a:hover {
  color: var(--qol-color-accent-strong);
  background: var(--qol-color-accent-soft);
  border-color: var(--qol-color-accent);
  transform: none;
}

.before-installation-page.premium-editorial.quiet-editorial
  a:focus-visible,
.before-installation-page.premium-editorial.quiet-editorial
  summary:focus-visible {
  outline: 3px solid var(--qol-color-focus);
  outline-offset: 3px;
}

@media (max-width: 700px) {
  .before-installation-page.premium-editorial.quiet-editorial
    .reason-copy
    > .reason-link,
  .before-installation-page.premium-editorial.quiet-editorial
    .reason-action
    .reason-link {
    padding-inline: var(--qol-space-4);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .reason-action {
    padding: var(--qol-space-4);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-advice
    .guide-reading {
    padding: var(--qol-space-5);
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .before-installation-page .article-summary ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Page-specific Hallmark refinements: quieter checks, scannable links, narrow-screen wrapping. */
.before-installation-page.premium-editorial.quiet-editorial .reason-copy > p:nth-of-type(2) {
  padding: var(--qol-space-4);
  background: var(--qol-color-accent-soft);
  border: 1px solid var(--qol-color-line);
  border-left-width: 1px;
  border-radius: var(--qol-radius-sm);
}

.before-installation-page .guide-final-check {
  padding: var(--qol-space-8) 0;
  background: var(--qol-color-hero-start);
  border-block: 1px solid var(--qol-color-line);
}

.before-installation-page .guide-final-check h2 {
  margin: 0;
  color: var(--qol-color-ink);
  font-family: var(--qol-font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.35;
}

.before-installation-page .guide-final-check > .guide-container > p {
  line-height: 1.9;
}

.before-installation-page .final-check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--qol-space-6);
  padding: 0;
  margin: var(--qol-space-5) 0;
  border-block: 1px solid var(--qol-color-line);
  list-style: none;
}

.before-installation-page .final-check-list li {
  display: flex;
  gap: var(--qol-space-3);
  align-items: flex-start;
  padding: var(--qol-space-3) 0;
  border-bottom: 1px solid var(--qol-color-line);
  line-height: 1.7;
}

.before-installation-page .final-check-list li:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.before-installation-page .final-check-list span {
  flex: 0 0 auto;
  color: var(--qol-color-accent-strong);
  font-weight: 700;
}

.before-installation-page .future-cost-note {
  margin-bottom: 0;
  color: var(--qol-color-muted);
}

@media (max-width: 700px) {
  .before-installation-page .guide-final-check {
    padding-block: var(--qol-space-7);
  }

  .before-installation-page .final-check-list {
    grid-template-columns: 1fr;
  }

  .before-installation-page .final-check-list li:nth-last-child(2) {
    border-bottom: 1px solid var(--qol-color-line);
  }
}

@media (min-width: 1024px) {
  .before-installation-page.premium-editorial.quiet-editorial
    .guide-intro
    .guide-reading
    > h2.guide-aligned-heading,
  .before-installation-page.premium-editorial.quiet-editorial
    .reason-section
    > .guide-container
    > h2.guide-aligned-heading {
    width: min(62rem, calc(100vw - 6rem));
    max-width: none;
    margin-inline: 50% 0;
    font-size: clamp(2.25rem, 3.1vw, 2.625rem);
    letter-spacing: -0.04em;
    white-space: nowrap;
    transform: translateX(-50%);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-intro
    .guide-reading
    > .guide-index {
    width: min(62rem, calc(100vw - 6rem));
    max-width: none;
    margin-inline: 50% 0;
    transform: translateX(-50%);
  }
}

.before-installation-page.premium-editorial.quiet-editorial .guide-index {
  padding-top: var(--qol-space-6);
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial.quiet-editorial .guide-index > strong {
  display: block;
  margin-bottom: var(--qol-space-5);
  color: var(--qol-color-ink);
  font-size: clamp(1.3125rem, 2.2vw, 1.625rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-index-table {
  width: 100%;
  margin-top: 0;
  background: var(--qol-color-surface);
  border: 1px solid var(--qol-color-line);
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-number-column {
  width: 5rem;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  th,
.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  td {
  padding: 0 var(--qol-space-5);
  border-bottom: 1px solid var(--qol-color-line);
  text-align: left;
  vertical-align: middle;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  thead
  th {
  height: 48px;
  color: var(--qol-color-ink);
  background: var(--qol-color-hero-start);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  th:first-child {
  text-align: center;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  tbody
  th {
  color: var(--qol-color-muted);
  font-size: 1rem;
  font-weight: 600;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  tbody
  tr:last-child
  > * {
  border-bottom: 0;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  a {
  display: flex;
  align-items: center;
  min-height: 60px;
  color: var(--qol-color-text);
  font-size: 1rem;
  font-weight: 550;
  line-height: 1.6;
  text-decoration: none;
}

.before-installation-page.premium-editorial.quiet-editorial
  .guide-index-table
  a:hover {
  color: var(--qol-color-accent-strong);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

@media (max-width: 700px) {
  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index {
    padding-top: var(--qol-space-5);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index
    > strong {
    margin-bottom: var(--qol-space-4);
    font-size: 1.375rem;
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index-number-column {
    width: 3.25rem;
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index-table
    th,
  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index-table
    td {
    padding-inline: var(--qol-space-3);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index-table
    thead
    th {
    height: 44px;
    font-size: 0.8125rem;
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .guide-index-table
    a {
    min-height: 56px;
    font-size: 0.9375rem;
    line-height: 1.55;
  }
}

.before-installation-page .before-installation-mobile-break {
  display: none;
}

@media (max-width: 700px) {
  .before-installation-page.premium-editorial.quiet-editorial
    .guide-intro
    .guide-reading
    > h2 {
    font-size: 1.5rem;
    line-height: 1.35;
    letter-spacing: -0.035em;
  }

  .before-installation-page .before-installation-mobile-break {
    display: block;
  }
}

/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V4
 * Quiet editorial refinement: typography and whitespace carry the hierarchy.
 */
.before-installation-page.premium-editorial.quiet-editorial .guide-breadcrumb {
  padding-bottom: var(--qol-space-2);
  font-size: 0.75rem;
  opacity: 0.7;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-hero {
  min-height: 0;
  padding: clamp(2.5rem, 3vw, 3rem) 0 clamp(2.75rem, 3.5vw, 3.5rem);
  background: var(--qol-color-hero-start);
}

.before-installation-page.premium-editorial.quiet-editorial .guide-hero::before {
  display: none;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-hero > .guide-container {
  display: block;
  max-width: 70rem;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-category {
  margin-bottom: var(--qol-space-4);
  color: var(--qol-color-accent-strong);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  opacity: 1;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-hero h1 {
  max-width: 66rem;
  color: var(--qol-color-ink);
  font-size: clamp(2.5rem, 4vw, 3.25rem);
  font-weight: 760;
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-lead {
  max-width: 47rem;
  margin-top: clamp(2.5rem, 4vw, 3.5rem);
  color: var(--qol-color-text);
  font-size: 1rem;
  line-height: 1.8;
  opacity: 1;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-meta {
  gap: var(--qol-space-3) var(--qol-space-6);
  padding: 0;
  margin-top: var(--qol-space-6);
  color: var(--qol-color-muted);
  border: 0;
  font-size: 0.75rem;
  opacity: 1;
}

.before-installation-page.premium-editorial.quiet-editorial .article-summary {
  max-width: 70rem;
  padding: var(--qol-space-3) 0 0;
  margin-top: calc(var(--qol-space-6) + var(--qol-space-2));
  color: var(--qol-color-text);
  border: 0;
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial.quiet-editorial .article-summary h2 {
  margin-bottom: var(--qol-space-2);
  color: var(--qol-color-ink);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  opacity: 1;
}

.before-installation-page.premium-editorial.quiet-editorial .article-summary ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--qol-space-3);
}

.before-installation-page.premium-editorial.quiet-editorial .article-summary li {
  min-width: 0;
  padding: var(--qol-space-2) var(--qol-space-3);
  color: var(--qol-color-text);
  background: var(--qol-color-surface);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-sm);
  box-shadow: var(--qol-shadow-card);
  font-size: 0.8125rem;
  line-height: 1.65;
  opacity: 1;
}

.before-installation-page.premium-editorial.quiet-editorial
  .article-summary
  li.article-summary-profit {
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  padding-block: var(--qol-space-2);
  padding-inline: var(--qol-space-1);
  font-size: 0.8125rem;
  letter-spacing: -0.025em;
  text-align: center;
  white-space: nowrap;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-intro,
.before-installation-page.premium-editorial.quiet-editorial .reason-section,
.before-installation-page.premium-editorial.quiet-editorial .guide-advice,
.before-installation-page.premium-editorial.quiet-editorial .guide-faq,
.before-installation-page.premium-editorial.quiet-editorial .guide-related,
.before-installation-page.premium-editorial.quiet-editorial .article-about {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
}

.before-installation-page.premium-editorial.quiet-editorial .guide-intro .guide-reading,
.before-installation-page.premium-editorial.quiet-editorial .guide-advice .guide-reading,
.before-installation-page.premium-editorial.quiet-editorial .guide-faq .guide-reading,
.before-installation-page.premium-editorial.quiet-editorial .article-about .guide-reading {
  max-width: 46rem;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-intro h2,
.before-installation-page.premium-editorial.quiet-editorial .reason-section > .guide-container > h2,
.before-installation-page.premium-editorial.quiet-editorial .guide-faq h2,
.before-installation-page.premium-editorial.quiet-editorial .guide-advice h2,
.before-installation-page.premium-editorial.quiet-editorial .guide-related h2,
.before-installation-page.premium-editorial.quiet-editorial .article-about h2 {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  font-size: clamp(1.9rem, 3.5vw, 3rem);
  line-height: 1.2;
}

.before-installation-page.premium-editorial.quiet-editorial .reason-item {
  padding-block: clamp(2.75rem, 5vw, 4.5rem);
}

.before-installation-page.premium-editorial.quiet-editorial .reason-copy h3 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
}

.before-installation-page.premium-editorial.quiet-editorial .final-cta {
  background: var(--qol-color-ink);
  border: 0;
  border-radius: var(--qol-radius-sm);
  box-shadow: none;
}

.before-installation-page.premium-editorial.quiet-editorial .final-cta::after {
  display: none;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-related a {
  min-height: 64px;
  padding-block: var(--qol-space-3);
}

.before-installation-page.premium-editorial.quiet-editorial .guide-related a::before {
  width: auto;
  height: auto;
  background: transparent;
}

@media (max-width: 900px) {
  .before-installation-page.premium-editorial.quiet-editorial .article-summary ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .before-installation-page.premium-editorial.quiet-editorial .guide-hero {
    padding: var(--qol-space-8) 0 var(--qol-space-9);
  }

  .before-installation-page.premium-editorial.quiet-editorial .guide-hero h1 {
    font-size: clamp(2rem, 9.5vw, 2.75rem);
  }

  .before-installation-page.premium-editorial.quiet-editorial .guide-meta {
    gap: var(--qol-space-2);
  }

  .before-installation-page.premium-editorial.quiet-editorial .article-summary {
    padding-top: var(--qol-space-5);
    margin-top: calc(var(--qol-space-6) + var(--qol-space-2));
  }

  .before-installation-page.premium-editorial.quiet-editorial .article-summary ul {
    grid-template-columns: 1fr;
    gap: var(--qol-space-2);
  }

  .before-installation-page.premium-editorial.quiet-editorial .article-summary li {
    padding: var(--qol-space-3) var(--qol-space-4);
  }

  .before-installation-page.premium-editorial.quiet-editorial
    .article-summary
    li.article-summary-profit {
    padding-block: var(--qol-space-3);
    padding-inline: var(--qol-space-3);
  }

  .before-installation-page.premium-editorial.quiet-editorial .guide-intro,
  .before-installation-page.premium-editorial.quiet-editorial .reason-section,
  .before-installation-page.premium-editorial.quiet-editorial .guide-advice,
  .before-installation-page.premium-editorial.quiet-editorial .guide-faq,
  .before-installation-page.premium-editorial.quiet-editorial .guide-related,
  .before-installation-page.premium-editorial.quiet-editorial .article-about {
    padding-block: var(--qol-space-8);
  }
}

/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V4
 * Redesign direction: trust-first editorial · quiet premium · QOL navy
 */
.before-installation-page.premium-editorial .guide-breadcrumb {
  padding-bottom: var(--qol-space-3);
  color: var(--qol-color-muted);
  font-size: 0.75rem;
  opacity: 0.78;
}

.before-installation-page.premium-editorial .guide-hero {
  position: relative;
  overflow: clip;
  min-height: min(48rem, calc(100svh - 5rem));
  padding: clamp(4rem, 8vw, 7rem) 0 clamp(4.5rem, 9vw, 8rem);
  background:
    linear-gradient(135deg, var(--qol-color-ink), var(--qol-color-accent-strong));
}

.before-installation-page.premium-editorial .guide-hero::before {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 14%, var(--qol-color-accent) 0, transparent 32%),
    linear-gradient(90deg, transparent 0 67%, var(--qol-color-on-accent) 67% 67.08%, transparent 67.08%);
  content: "";
  opacity: 0.15;
  pointer-events: none;
}

.before-installation-page.premium-editorial .guide-hero > .guide-container {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(18rem, 0.75fr);
  grid-template-areas:
    "category category"
    "title summary"
    "lead summary"
    "meta summary";
  column-gap: clamp(3rem, 7vw, 8rem);
  align-items: end;
  max-width: 74rem;
}

.before-installation-page.premium-editorial .guide-category {
  grid-area: category;
  width: fit-content;
  min-height: auto;
  padding: 0;
  margin-bottom: var(--qol-space-6);
  color: var(--qol-color-on-accent);
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  opacity: 0.78;
}

.before-installation-page.premium-editorial .guide-category svg {
  display: none;
}

.before-installation-page.premium-editorial .guide-hero h1 {
  grid-area: title;
  max-width: 48rem;
  margin: 0;
  color: var(--qol-color-on-accent);
  font-size: clamp(2.5rem, 5vw, 4.75rem);
  font-weight: 760;
  line-height: 1.09;
  letter-spacing: -0.052em;
}

.before-installation-page.premium-editorial .guide-lead {
  grid-area: lead;
  max-width: 42rem;
  margin-top: var(--qol-space-6);
  color: var(--qol-color-on-accent);
  font-size: clamp(1rem, 1.25vw, 1.125rem);
  line-height: 1.85;
  opacity: 0.82;
}

.before-installation-page.premium-editorial .guide-meta {
  grid-area: meta;
  gap: var(--qol-space-3) var(--qol-space-6);
  padding-top: var(--qol-space-6);
  margin-top: var(--qol-space-7);
  color: var(--qol-color-on-accent);
  border-top: 1px solid var(--qol-color-on-accent);
  font-size: 0.75rem;
  opacity: 0.72;
}

.before-installation-page.premium-editorial .article-summary {
  grid-area: summary;
  align-self: stretch;
  max-width: none;
  padding: 0 0 0 clamp(1.5rem, 3vw, 3rem);
  margin: 0;
  color: var(--qol-color-on-accent);
  background: transparent;
  border: 0;
  border-left: 1px solid var(--qol-color-on-accent);
  border-radius: 0;
  box-shadow: none;
}

.before-installation-page.premium-editorial .article-summary h2 {
  padding: 0;
  margin-bottom: var(--qol-space-6);
  color: inherit;
  border: 0;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  opacity: 0.68;
}

.before-installation-page.premium-editorial .article-summary ul {
  display: block;
}

.before-installation-page.premium-editorial .article-summary li {
  padding: var(--qol-space-4) 0;
  color: inherit;
  border-bottom: 1px solid var(--qol-color-on-accent);
  font-size: 0.875rem;
  line-height: 1.65;
  opacity: 0.82;
}

.before-installation-page.premium-editorial .article-summary li:first-child {
  padding-top: 0;
}

.before-installation-page.premium-editorial .article-summary li::before {
  display: none;
}

.before-installation-page.premium-editorial .guide-intro,
.before-installation-page.premium-editorial .reason-section,
.before-installation-page.premium-editorial .guide-advice,
.before-installation-page.premium-editorial .guide-faq,
.before-installation-page.premium-editorial .guide-related,
.before-installation-page.premium-editorial .article-about {
  padding-block: clamp(5rem, 10vw, 9rem);
}

.before-installation-page.premium-editorial .guide-intro h2,
.before-installation-page.premium-editorial .reason-section > .guide-container > h2,
.before-installation-page.premium-editorial .guide-faq h2,
.before-installation-page.premium-editorial .guide-advice h2,
.before-installation-page.premium-editorial .guide-related h2,
.before-installation-page.premium-editorial .article-about h2 {
  padding: 0;
  margin-bottom: clamp(2rem, 5vw, 4rem);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: -0.045em;
}

.before-installation-page.premium-editorial .guide-intro h2::after,
.before-installation-page.premium-editorial .reason-section > .guide-container > h2::after,
.before-installation-page.premium-editorial .guide-faq h2::after,
.before-installation-page.premium-editorial .guide-advice h2::after,
.before-installation-page.premium-editorial .guide-related h2::after,
.before-installation-page.premium-editorial .article-about h2::after {
  display: none;
}

.before-installation-page.premium-editorial .guide-index {
  padding: var(--qol-space-7) 0 0;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: transparent;
  border: 0;
  border-top: 1px solid var(--qol-color-line);
  border-radius: 0;
}

.before-installation-page.premium-editorial .guide-index ol {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--qol-space-8);
  margin-top: var(--qol-space-4);
}

.before-installation-page.premium-editorial .reason-section > .guide-container {
  max-width: 64rem;
}

.before-installation-page.premium-editorial .reason-list {
  gap: 0;
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial .reason-item {
  grid-template-columns: 5rem minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(3rem, 7vw, 6rem) 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--qol-color-line);
  border-radius: 0;
  box-shadow: none;
  transition: color var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page.premium-editorial .reason-item:hover {
  color: var(--qol-color-accent-strong);
  background: transparent;
  border-color: var(--qol-color-line);
  box-shadow: none;
  transform: none;
}

.before-installation-page.premium-editorial .reason-number {
  display: block;
  width: auto;
  height: auto;
  color: var(--qol-color-accent);
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}

.before-installation-page.premium-editorial .reason-number span {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 650;
  letter-spacing: -0.06em;
}

.before-installation-page.premium-editorial .reason-number::before,
.before-installation-page.premium-editorial .reason-number::after {
  display: none;
}

.before-installation-page.premium-editorial .reason-copy h3 {
  margin-bottom: var(--qol-space-5);
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.before-installation-page.premium-editorial .reason-link {
  padding: 0;
  background: transparent;
  border-bottom: 1px solid currentColor;
  border-radius: 0;
}

.before-installation-page.premium-editorial .reason-link:hover {
  color: var(--qol-color-accent-strong);
  background: transparent;
  transform: none;
}

.before-installation-page.premium-editorial .inline-guide-card {
  padding-top: var(--qol-space-5);
  margin-top: var(--qol-space-6);
}

.before-installation-page.premium-editorial .guide-advice .guide-reading {
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.before-installation-page.premium-editorial .final-cta {
  padding: clamp(3rem, 7vw, 6rem);
  border-radius: var(--qol-radius-md);
  box-shadow: none;
}

.before-installation-page.premium-editorial .faq-list {
  background: transparent;
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  box-shadow: none;
}

.before-installation-page.premium-editorial .guide-related ul {
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial .guide-related a {
  min-height: 72px;
  padding-inline: 0 3rem;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--qol-color-line);
  border-radius: 0;
  box-shadow: none;
}

.before-installation-page.premium-editorial .guide-related a:hover {
  background: transparent;
  border-color: var(--qol-color-line);
  transform: translateX(0.25rem);
}

.before-installation-page.premium-editorial .article-about dl {
  gap: 0;
  border-top: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial .article-about dl div {
  padding: var(--qol-space-5) 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--qol-color-line);
  border-radius: 0;
}

@media (max-width: 900px) {
  .before-installation-page.premium-editorial .guide-hero {
    min-height: auto;
  }

  .before-installation-page.premium-editorial .guide-hero > .guide-container {
    display: block;
  }

  .before-installation-page.premium-editorial .guide-hero h1 {
    max-width: 44rem;
  }

  .before-installation-page.premium-editorial .article-summary {
    padding: var(--qol-space-7) 0 0;
    margin-top: var(--qol-space-7);
    border-top: 1px solid var(--qol-color-on-accent);
    border-left: 0;
  }

  .before-installation-page.premium-editorial .article-summary ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 var(--qol-space-6);
  }
}

@media (max-width: 700px) {
  .before-installation-page.premium-editorial .guide-hero {
    padding-block: var(--qol-space-8);
  }

  .before-installation-page.premium-editorial .guide-hero h1 {
    font-size: clamp(2.1rem, 10vw, 3.25rem);
  }

  .before-installation-page.premium-editorial .guide-meta {
    gap: var(--qol-space-3);
  }

  .before-installation-page.premium-editorial .article-summary {
    padding: var(--qol-space-6) 0 0;
  }

  .before-installation-page.premium-editorial .article-summary ul,
  .before-installation-page.premium-editorial .guide-index ol {
    grid-template-columns: 1fr;
  }

  .before-installation-page.premium-editorial .article-summary li {
    padding-left: 0;
  }

  .before-installation-page.premium-editorial .reason-item {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: var(--qol-space-4);
    padding: var(--qol-space-8) 0;
  }

  .before-installation-page.premium-editorial .reason-number {
    width: auto;
    height: auto;
  }

  .before-installation-page.premium-editorial .reason-number span {
    font-size: 2rem;
  }

  .before-installation-page.premium-editorial .final-cta {
    padding: var(--qol-space-7) var(--qol-space-5);
  }
}

@media (max-width: 360px) {
  .before-installation-page.premium-editorial .guide-container {
    width: min(calc(100% - 1.5rem), var(--qol-content-width));
  }

  .before-installation-page.premium-editorial .reason-link,
  .before-installation-page.premium-editorial .primary-cta {
    font-size: 0.9rem;
  }
}

@media (min-width: 901px) and (max-width: 1100px) {
  .before-installation-page.premium-editorial.quiet-editorial
    .article-summary
    li.article-summary-profit {
    padding-inline: 0;
    font-size: 0.6875rem;
    letter-spacing: -0.085em;
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .before-installation-page.premium-editorial .article-summary ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .before-installation-page.premium-editorial *,
  .before-installation-page.premium-editorial *::before,
  .before-installation-page.premium-editorial *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* 2026-07-29 visual redesign: content and link targets are unchanged. */
.before-installation-page {
  background: var(--qol-color-surface);
  font-size: 1rem;
  line-height: 1.9;
}

.before-installation-page .guide-container {
  width: min(calc(100% - 3rem), 72rem);
}

.before-installation-page .guide-reading {
  max-width: 46rem;
}

.before-installation-page .guide-breadcrumb {
  padding-top: 6.75rem;
  padding-bottom: var(--qol-space-3);
  color: var(--qol-color-muted);
  font-size: 0.75rem;
}

.before-installation-page .guide-breadcrumb a {
  color: var(--qol-color-muted);
  text-decoration: none;
}

.before-installation-page .guide-hero {
  padding: var(--qol-space-7) 0 var(--qol-space-8);
  background: linear-gradient(145deg, var(--qol-color-hero-start), var(--qol-color-hero-end));
  border-bottom: 1px solid var(--qol-color-line);
}

.before-installation-page .guide-hero .guide-container {
  max-width: 64rem;
}

.before-installation-page .guide-category {
  display: inline-flex;
  align-items: center;
  gap: var(--qol-space-2);
  min-height: 36px;
  padding: var(--qol-space-1) var(--qol-space-3);
  margin: 0 0 var(--qol-space-5);
  color: var(--qol-color-accent-strong);
  background: var(--qol-color-surface);
  border: 1px solid var(--qol-color-line);
  border-radius: 999px;
  box-shadow: var(--qol-shadow-low);
  font-size: 0.8125rem;
  font-weight: 800;
  line-height: 1;
}

.before-installation-page .guide-category svg,
.before-installation-page .guide-meta svg {
  flex: 0 0 auto;
}

.before-installation-page .guide-hero h1 {
  max-width: 60rem;
  color: var(--qol-color-ink);
  font-family: var(--qol-font-body);
  font-size: clamp(2rem, 3.7vw, 3.25rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.before-installation-page .guide-lead {
  max-width: 52rem;
  margin-top: var(--qol-space-4);
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.9;
}

.before-installation-page .guide-meta {
  display: flex;
  align-items: center;
  gap: var(--qol-space-3) var(--qol-space-5);
  margin-top: var(--qol-space-4);
  color: var(--qol-color-muted);
  font-size: 0.8125rem;
}

.before-installation-page .guide-meta li {
  display: inline-flex;
  align-items: center;
  gap: var(--qol-space-2);
  line-height: 1.4;
}

.before-installation-page .article-summary {
  max-width: 58rem;
  padding: var(--qol-space-4);
  margin-top: var(--qol-space-5);
  background: var(--qol-color-card);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-lg);
  box-shadow: var(--qol-shadow-card);
}

.before-installation-page .article-summary h2 {
  padding-bottom: var(--qol-space-3);
  margin-bottom: var(--qol-space-3);
  border-bottom: 1px solid var(--qol-color-line);
  font-size: 1.125rem;
}

.before-installation-page .article-summary ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--qol-space-4);
  padding: 0;
  list-style: none;
}

.before-installation-page .article-summary li {
  position: relative;
  padding-left: var(--qol-space-6);
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
}

.before-installation-page .article-summary li::before {
  position: absolute;
  top: 0.42em;
  left: 0.1rem;
  width: 0.75rem;
  height: 0.4rem;
  border-bottom: 2px solid var(--qol-color-accent);
  border-left: 2px solid var(--qol-color-accent);
  content: "";
  transform: rotate(-45deg);
}

.before-installation-page .guide-intro,
.before-installation-page .guide-advice,
.before-installation-page .guide-faq,
.before-installation-page .guide-related,
.before-installation-page .article-about {
  padding-block: var(--qol-space-8);
}

.before-installation-page .guide-intro .guide-reading,
.before-installation-page .guide-advice .guide-reading,
.before-installation-page .guide-faq .guide-reading,
.before-installation-page .article-about .guide-reading {
  max-width: 46rem;
  margin-inline: auto;
}

.before-installation-page .guide-intro h2,
.before-installation-page .reason-section > .guide-container > h2,
.before-installation-page .guide-faq h2,
.before-installation-page .guide-advice h2,
.before-installation-page .guide-related h2,
.before-installation-page .article-about h2 {
  position: relative;
  padding-bottom: var(--qol-space-4);
  margin-bottom: var(--qol-space-5);
  font-family: var(--qol-font-body);
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.before-installation-page .guide-intro h2::after,
.before-installation-page .reason-section > .guide-container > h2::after,
.before-installation-page .guide-faq h2::after,
.before-installation-page .guide-advice h2::after,
.before-installation-page .guide-related h2::after,
.before-installation-page .article-about h2::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2.5rem;
  height: 3px;
  background: var(--qol-color-accent);
  border-radius: 999px;
  content: "";
}

.before-installation-page .guide-intro p,
.before-installation-page .points-note,
.before-installation-page .reason-copy p,
.before-installation-page .guide-faq p,
.before-installation-page .guide-advice p,
.before-installation-page .guide-advice li,
.before-installation-page .article-about dd,
.before-installation-page .source-note {
  font-size: 1rem;
  line-height: 1.95;
}

.before-installation-page .guide-index {
  padding: var(--qol-space-5);
  margin-top: var(--qol-space-7);
  background: var(--qol-color-hero-start);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-md);
}

.before-installation-page .guide-index ol {
  padding-left: 1.25rem;
}

.before-installation-page .guide-index a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 650;
  text-decoration-color: var(--qol-color-line);
}

.before-installation-page .reason-section {
  padding: var(--qol-space-8) 0;
  background: var(--qol-color-paper);
}

.before-installation-page .reason-section > .guide-container {
  max-width: 52rem;
}

.before-installation-page .points-note {
  margin-bottom: var(--qol-space-7);
}

.before-installation-page .reason-list {
  display: grid;
  gap: var(--qol-space-6);
  border: 0;
}

.before-installation-page .reason-item {
  position: relative;
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: var(--qol-space-5);
  padding: var(--qol-space-6);
  background: var(--qol-color-card);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-lg);
  box-shadow: var(--qol-shadow-card);
  transition:
    transform var(--qol-duration-fast) var(--qol-ease-out),
    box-shadow var(--qol-duration-fast) var(--qol-ease-out),
    border-color var(--qol-duration-fast) var(--qol-ease-out),
    background-color var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page .reason-item:hover {
  background: var(--qol-color-card-hover);
  border-color: var(--qol-color-accent);
  box-shadow: var(--qol-shadow-card-hover);
  transform: translateY(-2px);
}

.before-installation-page .reason-number {
  position: relative;
  display: grid;
  place-items: center;
  align-self: start;
  width: 3.75rem;
  height: 3.75rem;
  margin: 0;
  color: var(--qol-color-on-accent);
  background: var(--qol-color-accent-strong);
  border-radius: 1.125rem;
  box-shadow: var(--qol-shadow-low);
  font-family: var(--qol-font-body);
}

.before-installation-page .reason-number span {
  display: block;
  margin: 0;
  font-size: 1.35rem;
  line-height: 1;
}

.before-installation-page .reason-number::after {
  position: absolute;
  right: -0.2rem;
  bottom: -0.2rem;
  width: 1.1rem;
  height: 1.1rem;
  background: var(--qol-color-surface);
  border: 2px solid var(--qol-color-accent);
  border-radius: 50%;
  content: "";
}

.before-installation-page .reason-number::before {
  position: absolute;
  right: 0.06rem;
  bottom: 0.18rem;
  z-index: 1;
  width: 0.42rem;
  height: 0.22rem;
  border-bottom: 2px solid var(--qol-color-accent);
  border-left: 2px solid var(--qol-color-accent);
  content: "";
  transform: rotate(-45deg);
}

.before-installation-page .reason-copy h3 {
  margin-bottom: var(--qol-space-4);
  font-family: var(--qol-font-body);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.015em;
}

.before-installation-page .reason-copy p {
  max-width: 44rem;
}

.before-installation-page .reason-link,
.before-installation-page .inline-guide-card a,
.before-installation-page .guide-related a {
  transition:
    color var(--qol-duration-fast) var(--qol-ease-out),
    background-color var(--qol-duration-fast) var(--qol-ease-out),
    border-color var(--qol-duration-fast) var(--qol-ease-out),
    transform var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page .reason-link {
  padding: 0 var(--qol-space-3);
  background: var(--qol-color-accent-soft);
  border-radius: var(--qol-radius-sm);
  text-decoration: none;
}

.before-installation-page .reason-link:hover {
  color: var(--qol-color-on-accent);
  background: var(--qol-color-accent-strong);
  transform: translateY(-1px);
}

.before-installation-page .inline-guide-card {
  padding: var(--qol-space-4) 0 0;
  margin-top: var(--qol-space-5);
  background: transparent;
  border: 0;
  border-top: 1px solid var(--qol-color-line);
  border-radius: 0;
}

.before-installation-page .inline-guide-card a {
  text-decoration-thickness: 1px;
}

.before-installation-page .guide-advice {
  background: var(--qol-color-hero-start);
}

.before-installation-page .guide-advice .guide-reading {
  padding: var(--qol-space-7);
  background: var(--qol-color-card);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-lg);
  box-shadow: var(--qol-shadow-card);
}

.before-installation-page .final-cta {
  position: relative;
  overflow: hidden;
  padding: var(--qol-space-8);
  margin-block: var(--qol-space-8);
  background: var(--qol-color-ink);
  border: 1px solid var(--qol-color-accent);
  border-radius: var(--qol-radius-xl);
  box-shadow: var(--qol-shadow-card-hover);
}

.before-installation-page .final-cta::after {
  position: absolute;
  right: -3rem;
  bottom: -5rem;
  width: 15rem;
  height: 15rem;
  background: var(--qol-color-accent);
  border-radius: 50%;
  content: "";
  opacity: 0.12;
}

.before-installation-page .final-cta h2,
.before-installation-page .final-cta p,
.before-installation-page .primary-cta {
  position: relative;
  z-index: 1;
}

.before-installation-page .final-cta h2 {
  max-width: 38rem;
  padding: 0;
  font-family: var(--qol-font-body);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  line-height: 1.35;
  letter-spacing: -0.025em;
}

@media (min-width: 901px) {
  .before-installation-page .final-cta h2.final-cta-heading {
    width: max-content;
    max-width: 100%;
    margin-inline: auto;
    text-align: center;
    white-space: nowrap;
  }
}

@media (max-width: 360px) {
  .before-installation-page .final-cta h2.final-cta-heading {
    font-size: 1.4375rem;
  }
}

.before-installation-page .primary-cta {
  min-height: 52px;
  padding-inline: var(--qol-space-5);
  border-radius: 999px;
  box-shadow: var(--qol-shadow-low);
  transition:
    transform var(--qol-duration-fast) var(--qol-ease-out),
    background-color var(--qol-duration-fast) var(--qol-ease-out),
    box-shadow var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page .primary-cta::after {
  margin-left: var(--qol-space-2);
  content: "→";
}

.before-installation-page .primary-cta:hover {
  box-shadow: var(--qol-shadow-card);
  transform: translateY(-2px);
}

.before-installation-page .faq-list {
  overflow: hidden;
  background: var(--qol-color-card);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-lg);
  box-shadow: var(--qol-shadow-card);
}

.before-installation-page .faq-list details:last-child {
  border-bottom: 0;
}

.before-installation-page .faq-list summary {
  padding-inline: var(--qol-space-5) var(--qol-space-7);
  transition:
    color var(--qol-duration-fast) var(--qol-ease-out),
    background-color var(--qol-duration-fast) var(--qol-ease-out);
}

.before-installation-page .faq-list summary:hover {
  background: var(--qol-color-card-hover);
}

.before-installation-page .faq-list details p {
  padding-inline: var(--qol-space-5);
}

.before-installation-page .guide-related .guide-container {
  max-width: 60rem;
}

.before-installation-page .guide-related ul {
  gap: var(--qol-space-4);
  padding: 0;
  border: 0;
}

.before-installation-page .guide-related li {
  min-width: 0;
}

.before-installation-page .guide-related a {
  position: relative;
  width: 100%;
  min-height: 76px;
  padding: var(--qol-space-4) 3.5rem var(--qol-space-4) var(--qol-space-5);
  background: var(--qol-color-card);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-md);
  box-shadow: var(--qol-shadow-card);
  text-decoration: none;
}

.before-installation-page .guide-related a::before {
  position: absolute;
  right: var(--qol-space-5);
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  background: var(--qol-color-accent-soft);
  border-radius: 50%;
  content: "→";
}

.before-installation-page .guide-related a:hover {
  color: var(--qol-color-accent-strong);
  background: var(--qol-color-card-hover);
  border-color: var(--qol-color-accent);
  transform: translateY(-2px);
}

.before-installation-page .article-about {
  background: var(--qol-color-paper);
}

.before-installation-page .article-about .guide-reading {
  max-width: 50rem;
}

.before-installation-page .article-about dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--qol-space-4);
  border: 0;
}

.before-installation-page .article-about dl div {
  display: block;
  padding: var(--qol-space-5);
  background: var(--qol-color-hero-start);
  border: 1px solid var(--qol-color-line);
  border-radius: var(--qol-radius-md);
}

.before-installation-page .article-about dt {
  margin-bottom: var(--qol-space-2);
  color: var(--qol-color-muted);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.before-installation-page .source-note {
  max-width: 46rem;
  padding: var(--qol-space-5);
  margin-inline: auto;
  margin-bottom: var(--qol-space-8);
  border-radius: var(--qol-radius-md);
  font-size: 1rem;
  line-height: 1.85;
  text-align: center;
}

@media (max-width: 700px) {
  .before-installation-page .guide-container {
    width: min(calc(100% - 1.5rem), 72rem);
  }

  .before-installation-page .guide-breadcrumb {
    padding-top: 6rem;
  }

  .before-installation-page .guide-hero {
    padding: var(--qol-space-6) 0 var(--qol-space-7);
  }

  .before-installation-page .guide-hero h1 {
    font-size: clamp(1.8rem, 9vw, 2.5rem);
    line-height: 1.28;
  }

  .before-installation-page .guide-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--qol-space-2);
  }

  .before-installation-page .article-summary,
  .before-installation-page .guide-advice .guide-reading,
  .before-installation-page .article-about .guide-reading {
    padding: var(--qol-space-5);
    border-radius: var(--qol-radius-md);
  }

  .before-installation-page .guide-intro,
  .before-installation-page .reason-section,
  .before-installation-page .guide-advice,
  .before-installation-page .guide-faq,
  .before-installation-page .guide-related,
  .before-installation-page .article-about {
    padding-block: var(--qol-space-7);
  }

  .before-installation-page .guide-index ol,
  .before-installation-page .article-summary ul,
  .before-installation-page .guide-related ul,
  .before-installation-page .article-about dl {
    grid-template-columns: 1fr;
  }

  .before-installation-page .reason-list {
    gap: var(--qol-space-5);
  }

  .before-installation-page .reason-item {
    grid-template-columns: 1fr;
    gap: var(--qol-space-4);
    padding: var(--qol-space-5);
    border-radius: var(--qol-radius-md);
  }

  .before-installation-page .reason-number {
    width: 3.25rem;
    height: 3.25rem;
    border-radius: var(--qol-radius-md);
  }

  .before-installation-page .final-cta {
    padding: var(--qol-space-6) var(--qol-space-5);
    margin-block: var(--qol-space-7);
    border-radius: var(--qol-radius-lg);
  }

  .before-installation-page .guide-related a {
    min-height: 68px;
  }
}

@media (max-width: 360px) {
  .before-installation-page .guide-hero h1 {
    font-size: 1.75rem;
  }

  .before-installation-page .article-summary,
  .before-installation-page .reason-item,
  .before-installation-page .guide-index,
  .before-installation-page .guide-advice .guide-reading,
  .before-installation-page .article-about .guide-reading {
    padding: var(--qol-space-4);
  }

  .before-installation-page .article-summary li {
    padding-left: var(--qol-space-5);
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .before-installation-page .article-summary ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Final cascade overrides for the page-specific checklist and related navigation. */
.before-installation-page .guide-related ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--qol-space-6);
  border-block: 1px solid var(--qol-color-line);
}

.before-installation-page.premium-editorial.quiet-editorial .guide-related a {
  position: static;
  min-height: 0;
  padding: var(--qol-space-4) var(--qol-space-1);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--qol-color-line);
  border-radius: 0;
  box-shadow: none;
  white-space: normal;
  overflow-wrap: anywhere;
}

.before-installation-page.premium-editorial.quiet-editorial .guide-related a::before {
  position: static;
  display: inline;
  width: auto;
  height: auto;
  margin-right: var(--qol-space-2);
  background: transparent;
  border-radius: 0;
  content: "→";
}

.before-installation-page.premium-editorial.quiet-editorial .guide-related a:hover {
  background: transparent;
  box-shadow: none;
  transform: none;
}

@media (max-width: 700px) {
  .before-installation-page .guide-related ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 360px) {
  .before-installation-page .reason-link,
  .before-installation-page .inline-guide-card a,
  .before-installation-page .primary-cta,
  .before-installation-page .guide-related a,
  .before-installation-page .future-cost-note a {
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: normal;
  }
}