/* CertaCalc — papel, tinta e instrumentos. Camada compartilhada, sem fontes externas.
   Mantém estrutura, conteúdo, estados e contratos das calculadoras. */
:root {
  --bg: #f6f4ee;
  --surface: #fffefa;
  --surface-muted: #eeeee5;
  --text: #222c27;
  --muted: #5e665f;
  --line: #d6d9cd;
  --primary: #285744;
  --primary-dark: #1c4435;
  --ink: #1f352b;
  --gold: #d8c58a;
  --accent: #9a4c32;
  --shadow: none;
  --page-width: 1760px;
  --display: Georgia, 'Times New Roman', serif;
  font-family: 'Segoe UI', Arial, sans-serif;
}

body { background: var(--bg); }
main, .article-page, .article-page.library-page {
  width: min(var(--page-width), calc(100% - 80px));
}
.site-header {
  border-color: var(--line);
  background: var(--bg);
  backdrop-filter: none;
}
.header-inner { width: min(var(--page-width), calc(100% - 80px)); min-height: 88px; }
.brand { gap: 11px; }
.brand strong { font-size: 1.4rem; letter-spacing: -.065em; font-weight: 750; }
.brand small { font-size: .7rem; letter-spacing: .015em; color: var(--muted); }
.brand-mark { width: 38px; height: 42px; padding: 8px 6px; gap: 4px; border-radius: 2px; background: var(--ink); box-shadow: none; }
.brand-mark span { border-radius: 0; background: var(--surface); }
.brand-mark span:last-child { background: var(--gold); }
.top-nav { gap: 8px; }
.top-nav a { border-radius: 0; color: #48564c; font-size: .83rem; font-weight: 600; padding: 13px 10px; }
.top-nav a[aria-current='page'] { background: transparent; box-shadow: inset 0 -2px 0 var(--primary); }
.top-nav a:hover { background: #e9ece1; }
.menu-toggle { border-radius: 2px; color: var(--ink); background: var(--surface); }
:where(a, button, input, select, summary):focus-visible {
  outline: 3px solid #9a4c32;
  outline-offset: 4px;
}
.top-nav a:focus-visible { outline: 3px solid #9a4c32; outline-offset: 2px; }
.eyebrow { color: var(--primary-dark); font-size: .69rem; font-weight: 700; letter-spacing: .12em; line-height: 1.6; }
h1, h2, h3 { text-wrap: pretty; }
.utility-intro h1, .article-intro h1, .topic-hero h1, .library-discovery h1,
.article-reading-header h1, .methodology-hero h1, .guide-directory-hero h1,
.contact-hero h1, .legal-content h1, .library-hero h1 {
  font-family: var(--display); font-weight: 400; letter-spacing: -.045em; line-height: 1.06;
}
.section-heading h2, .section-intro h2, .decision-lab-copy h2,
.library-section-head h2, .topic-section .section-intro h2 {
  font-family: var(--display); font-weight: 400; letter-spacing: -.025em;
}
.primary-link, .secondary-link, .primary-action, .secondary-action,
.home-form-actions .example-reset, .result-copy-button {
  min-height: 46px; border-radius: 3px; font-weight: 600; box-shadow: none;
}
.primary-link, .primary-action { background: var(--primary); border-color: var(--primary); }
.secondary-link, .secondary-action { background: var(--surface); border-color: #adb7a8; }
.text-action { color: var(--primary-dark); text-underline-offset: 5px; }

/* Entrada: título, busca e acesso direto ao instrumento. */
.utility-intro {
  grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
  gap: clamp(36px, 6vw, 88px); padding: 64px 0 58px; align-items: center;
}
.utility-intro .intro-copy { padding: 0; }
.utility-intro .intro-copy::before { content: none; }
.utility-intro h1 { margin: 20px 0 24px; font-size: clamp(3rem, 5.2vw, 4.65rem); }
.utility-intro h1 em { font-weight: 400; color: var(--primary); }
.utility-intro .intro-copy > p:not(.eyebrow) { max-width: 460px; color: var(--muted); font-size: 1rem; line-height: 1.8; }
.intro-links { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 24px; margin-top: 28px; }
.intro-links .primary-link { gap: 28px; padding: 0 20px; }
.intro-links .text-action { font-size: .84rem; font-weight: 600; }
.utility-intro .intro-copy > .intro-caption { margin-top: 20px; font-size: .76rem; }
.tool-finder { padding: 25px 0 0; border: 0; border-top: 2px solid var(--ink); border-radius: 0; background: var(--bg); box-shadow: none; }
.tool-finder-heading { margin-bottom: 18px; }
.tool-finder-heading strong { color: var(--ink); font-size: 1.05rem; font-weight: 650; }
.tool-finder-heading small { color: var(--muted); font-size: .8rem; margin-top: 5px; }
.tool-search-label input { min-height: 50px; border: 1px solid #9da998; border-radius: 3px; background: var(--surface); padding: 0 15px; }
.tool-search-label input:focus { border-color: var(--primary); outline: 2px solid var(--primary); box-shadow: none; }
.tool-finder-status { color: var(--muted); font-size: .72rem; margin: 12px 0 0; }
.tool-finder-results { gap: 0 22px; margin-top: 7px; }
.tool-finder-results a {
  display: grid; grid-template-columns: 32px minmax(0,1fr) 14px; align-items: center;
  gap: 10px; min-height: 76px; padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--text);
}
.tool-finder-results a[hidden] { display: none; }
.finder-symbol { color: var(--primary); font-family: var(--display); font-size: 1.15rem; }
.tool-finder-results strong, .tool-finder-results small { display: block; }
.tool-finder-results strong { font-size: .84rem; font-weight: 650; }
.tool-finder-results small { margin-top: 4px; color: var(--muted); font-size: .7rem; line-height: 1.4; }
.tool-finder-results a > span:last-child { color: var(--primary); }
.tool-finder-empty { color: var(--text); }
.tool-finder-empty a { text-decoration: underline; }

/* Instrumento: navegação discreta, números legíveis e teclas táteis. */
.workspace { grid-template-columns: 240px minmax(0,1fr); gap: 30px; padding: 30px 0 0; margin: 0 0 64px; border: 0; border-top: 1px solid #9aa593; border-radius: 0; background: transparent; box-shadow: none; }
.workspace .switcher { position: static; padding: 0; background: var(--bg); }
.workspace .switcher-list { gap: 2px; }
.workspace .switcher-item { min-height: 54px; padding: 9px 12px; color: var(--text); border-radius: 3px; }
.workspace .switcher-item strong { font-weight: 600; font-size: .85rem; }
.workspace .switcher-item small { color: var(--muted); font-size: .72rem; }
.workspace .switcher-item.active { color: var(--surface); border-color: var(--ink); background: var(--ink); }
.workspace .switcher-item.active small { color: #d7dfcf; }
.workspace .switcher-item:hover:not(.active), .workspace .switcher-item:focus-visible:not(.active) { color: var(--text); background: #e6eadf; border-color: #a5b09e; }
.workspace .item-icon { width: 30px; height: 30px; color: var(--primary); border-radius: 0; background: transparent; font-family: var(--display); font-weight: 400; }
.workspace .active .item-icon { color: #e3d4a1; }
.resource-panel { gap: 8px; margin-top: 14px; padding: 18px 12px 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; box-shadow: none; }
.resource-panel h3 { font-size: .85rem; font-weight: 600; }
.resource-links { gap: 0; }
.resource-links a { padding: 8px 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; font-size: .75rem; font-weight: 500; border-radius: 0; }
.workspace .calculator-stage { min-width: 0; padding: 28px; background: #e8ebe1; border: 1px solid #ced4c5; border-radius: 6px; }
.workspace .calculator { padding: 26px; border: 1px solid #d4d9ca; border-radius: 3px; background: var(--surface); }
.section-heading { margin-bottom: 26px; }
.section-heading h2 { font-size: 2.15rem; }
.calc-shell { width: 100%; }
.screen { min-height: 142px; padding: 22px; border: 1px solid #aebaa5; border-radius: 3px; color: var(--ink); background: #dce3cf; box-shadow: inset 0 2px 5px #1f352b0a; }
.screen-expression { color: #4e5f49; font-family: Consolas, monospace; }
.screen-result { font-family: Consolas, 'Courier New', monospace; font-weight: 400; letter-spacing: -.04em; }
.key, .scientific-pad button { min-height: 54px; border-radius: 3px; background: var(--surface); border-color: #d2d6c9; font-size: 1.1rem; font-weight: 500; box-shadow: 0 2px 0 #d8ddcf; }
.key.utility { color: var(--primary-dark); background: #e6ebdc; }
.key.operator { color: #744024; background: #efe7d7; }
.key.equal { color: var(--surface); background: var(--primary); border-color: var(--primary); box-shadow: 0 2px 0 #163a29; }
.key:active, .scientific-pad button:active { transform: translateY(1px); box-shadow: none; }
.input-panel, .converter, .finance-form, .date-form { border-radius: 3px; background: var(--surface); }
input, select, .field input, .field select { border-radius: 3px; border-color: #a9b39f; background: var(--surface); font-variant-numeric: tabular-nums; }
label, .field span { color: #414e42; font-weight: 600; }
.finance-form button, .date-form button, .currency-actions button { border-radius: 3px; font-weight: 600; }
.finance-output { background: #eef1e6; color: var(--ink); }

/* Catálogo: ritmo de lista, sem empilhamento de cartões decorativos. */
.content-band, .faq-band { margin: 60px 0; }
.section-intro { max-width: 760px; }
.section-intro h2 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
.feature-list { counter-reset: tools; gap: 0 32px; }
.feature-list article { position: relative; padding: 25px 0 25px 38px; border: 0; border-top: 1px solid #bfc7b6; border-radius: 0; background: transparent; box-shadow: none; counter-increment: tools; }
.feature-list article::before { content: counter(tools, decimal-leading-zero); position: absolute; top: 27px; left: 0; color: #687462; font-family: Consolas, monospace; font-size: .72rem; }
.feature-list h3 { font-size: 1rem; font-weight: 650; }
.feature-list h3 a { color: var(--ink); }
.feature-list p { font-size: .86rem; line-height: 1.7; }
.decision-lab { gap: 38px; margin: 50px 0 64px; padding: 34px; border: 1px solid #c9cebd; border-top: 1px solid #c9cebd; border-radius: 3px; background: #eeeee3; }
.decision-lab-copy h2 { font-size: 2.3rem; }
.decision-lab-panel { min-height: 0; background: var(--ink); border-radius: 3px; box-shadow: none; }
.decision-lab-panel h3 { font-weight: 400; font-size: 1.95rem; }
.decision-lab-summary { color: #dee6d8; }
.decision-lab-kicker { color: #e3d4a1; letter-spacing: .05em; }
.decision-lab-tabs button { border-radius: 2px; font-weight: 600; }
.decision-lab-tabs button[aria-selected='true'] { background: var(--primary); border-color: var(--primary); }
.decision-lab-metrics div { background: #294435; }
.decision-lab-metrics dt { color: #d4ddcc; }
.decision-lab-metrics dd { font-variant-numeric: tabular-nums; font-weight: 600; }
.decision-lab-chart b { background: var(--gold); }
.latest-articles-band { padding: 40px 0; border: 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); border-radius: 0; background: var(--bg); }
.latest-articles-band::before { content: none; }
.latest-articles-band .section-intro h2, .latest-articles-band .section-link { color: var(--ink); }
.latest-articles-band .section-intro p { color: var(--muted); }
.latest-articles-band .section-intro .eyebrow { color: var(--primary); }
.latest-articles-grid { gap: 24px; }
.latest-articles-band .home-article-card { min-height: 270px; border-radius: 0; border: 1px solid var(--line); background: var(--surface); box-shadow: none; }
.home-article-card a { padding: 26px; }
.home-article-card h3 { color: var(--ink); font-weight: 400; font-size: 1.6rem; }
.home-article-card span { color: var(--primary); font-size: .65rem; }
.home-article-card p { color: var(--muted); font-size: .9rem; }
.home-article-card:hover, .home-article-card:focus-within { transform: none; box-shadow: none; }
.product-trust-strip { margin: 46px 0; border: 0; }
.trust-strip article { border-color: var(--line); }
.trust-strip strong { color: var(--ink); font-size: .9rem; }
.trust-strip span { color: var(--muted); font-size: .85rem; }
.editorial-signature { grid-template-columns: minmax(0,1fr) auto; border-color: var(--line); padding: 28px 0; }
.editorial-signature h2 { color: var(--ink); font-family: var(--display); font-weight: 400; font-size: 1.8rem; }
.faq-list article { padding: 24px 0; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; }
.faq-list h3 { color: var(--ink); font-size: .95rem; }

/* Ferramentas e textos: mesma identidade, densidade adaptada ao conteúdo. */
.breadcrumb { margin-bottom: 28px; font-size: .74rem; font-weight: 500; }
.article-hero { grid-template-columns: minmax(0,1fr) 280px; gap: 48px; padding-bottom: 34px; }
.article-intro { padding: 0; border: 0; }
.article-intro h1 { margin: 16px 0 22px; font-size: clamp(2.6rem, 4.5vw, 4rem); }
.jump-to-tool { display: inline-flex; min-height: 44px; align-items: center; margin: 0 0 12px; color: var(--primary-dark); font-size: .84rem; font-weight: 650; text-decoration: underline; text-underline-offset: 5px; }
.tool-card#tool { scroll-margin-top: 100px; }
.article-intro p { max-width: 740px; color: var(--muted); font-size: .96rem; line-height: 1.8; }
.review-note { align-self: start; gap: 12px; margin-top: 35px; padding: 20px 0 20px 22px; border: 0; border-left: 1px solid #bbc4b0; color: var(--muted); background: transparent; font-size: .8rem; line-height: 1.7; }
.review-note strong { color: var(--ink); font-size: .82rem; }
.tool-card { border: 1px solid #c9d0bf; border-radius: 4px; background: var(--surface); box-shadow: none; }
.tool-card > div { padding: 32px; }
.tool-card > div, .tool-form, .form-grid, .tool-result { min-width: 0; }
.tool-result .table-wrap { max-width: 100%; overflow-x: auto; }
.tool-result :where(dt, dd, p, strong) { overflow-wrap: anywhere; }
.tool-card > div:first-child { background: var(--surface); }
.tool-card > div:last-child { background: #e9ecdf; }
.tool-card h2 { margin-bottom: 24px; font-size: 1.55rem; font-family: var(--display); font-weight: 400; }
.tool-result { border-radius: 3px; background: var(--ink); box-shadow: none; }
.result-main { font-family: var(--display); font-weight: 400; letter-spacing: -.035em; font-variant-numeric: tabular-nums; line-height: 1.14; }
.result-list dt { font-weight: 500; }
.result-list dd { font-weight: 600; font-variant-numeric: tabular-nums; }
.result-example { color: #e3d4a1; }
.result-comparison { background: #294435; border-color: #55715b; border-radius: 2px; }
.result-comparison-track span { background: var(--gold); }
.calculation-record-grid div { background: #294435; }
.finance-output .calculation-record-grid div { background: #e1e8d6; }
.result-copy-button { color: var(--ink); background: #e3d4a1; border-color: #e3d4a1; }
.content-grid { gap: 44px; margin-top: 38px; }
.content-grid > aside.content-panel { padding: 25px; border: 1px solid var(--line); border-top: 2px solid var(--primary); border-radius: 0; background: var(--surface); }
.content-panel h2, .guide-card h2, .article-copy h2 { color: var(--ink); font-family: var(--display); font-weight: 400; font-size: 1.75rem; }
.article-page > .content-panel h1 { color: var(--ink); font: 400 clamp(2.5rem, 4vw, 3.6rem)/1.08 var(--display); letter-spacing: -.04em; }
main.article-page:has(> .content-panel) { max-width: 900px; }
.content-panel p, .content-panel li, .guide-card p, .guide-card li { line-height: 1.85; color: #4f5b50; }
.evidence-block { border-left-color: var(--primary); background: #eeeee3; }
.related-list a { border-radius: 2px; background: var(--bg); font-weight: 600; }
.table-wrap th, .table-wrap td { padding: 12px; font-variant-numeric: tabular-nums; }
.topic-hero, .library-hero, .methodology-hero, .guide-directory-hero, .contact-hero {
  min-height: 320px; padding: 44px; border-radius: 3px; background: var(--ink); box-shadow: none;
}
.topic-hero h1, .library-hero h1, .methodology-hero h1, .guide-directory-hero h1, .contact-hero h1 { font-size: clamp(2.5rem,4.6vw,4.2rem); }
.topic-summary { border-radius: 0; box-shadow: none; background: #294435; }
.topic-grid { grid-template-columns: repeat(auto-fill, minmax(min(100%, 400px), 1fr)); gap: 20px; }
.topic-card, .topic-card:nth-child(2n), .topic-card:nth-child(3n), .library-card, .library-card:nth-child(2n), .library-card:nth-child(3n) {
  border: 1px solid var(--line); border-top: 2px solid #76896d; border-radius: 0; background: var(--surface); box-shadow: none;
}
.topic-card h3, .library-card h3 { font-family: var(--display); font-weight: 400; font-size: 1.6rem; }
.topic-note, .editorial-standard, .guide-directory-note { background: #eeeee3; border-radius: 0; box-shadow: none; }
.library-discovery { grid-template-columns: minmax(0,1fr) 280px; gap: 40px; padding: 32px 0 40px; border: 0; border-bottom: 1px solid var(--line); background: var(--bg); }
.library-discovery h1 { color: var(--ink); font-size: clamp(2.8rem,5vw,4.6rem); }
.library-discovery p { color: var(--muted); }
.library-discovery aside { border-radius: 2px; background: var(--ink); }
.library-search { border-radius: 3px; border-color: #a9b39f; background: var(--surface); }
.library-filter { min-height: 44px; border-radius: 3px; font-weight: 600; background: var(--surface); }
.library-filter[aria-pressed='true'] { background: var(--primary); border-color: var(--primary); }
.article-index-grid { gap: 24px; }
.article-index-card, .article-index-card[data-category] { padding: 26px; border: 1px solid var(--line); border-top: 2px solid #76896d; border-radius: 0; background: var(--surface); }
.article-index-card h2 { font-weight: 400; font-size: 1.65rem; }
.article-index-card h2 a { color: var(--ink); }
.article-index-card p, .article-index-card small { color: var(--muted); }
.article-index-card .category { color: var(--primary); }
.article-reading-page { max-width: 1140px; }
.article-reading-header { padding: 48px 0 40px; border-radius: 0; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); color: var(--text); background: var(--bg); }
.article-reading-header h1 { max-width: 930px; color: var(--ink); font-size: clamp(2.8rem,5.5vw,4.7rem); }
.article-reading-header .eyebrow { color: var(--primary); }
.article-reading-header > p:not(.eyebrow) { color: var(--muted); max-width: 750px; font-size: 1.05rem; }
.article-byline, .article-byline strong { color: var(--muted); font-size: .8rem; font-weight: 500; }
.article-reading-layout { gap: 60px; margin-top: 44px; }
.article-copy { font-size: 1.03rem; line-height: 1.9; }
.article-copy p, .article-copy li { color: #4f5b50; }
.article-copy a.primary-link { color: var(--surface); text-decoration: none; }
.article-sidebar { top: 110px; padding: 24px; border-radius: 0; border-color: var(--line); background: var(--surface); }
.article-sidebar p { color: var(--muted); }
.article-callout { background: #eeeee3; border-left-color: var(--primary); border-radius: 0; }
.source-list { background: #eeeee3; border-radius: 0; }
.decision-row { border-radius: 0; background: var(--surface); }
.decision-number, .decision-row:nth-child(2n) .decision-number, .decision-row:nth-child(3n) .decision-number { color: var(--primary); background: #e9ecdf; font-family: var(--display); font-weight: 400; }
.decision-links a { border-radius: 2px; }
.methodology-sidebar, .contact-details aside { background: var(--ink); }
.content-grid > aside.methodology-sidebar { background: var(--ink); border-color: var(--ink); }
.methodology-content .methodology-sidebar h2,
.methodology-content .methodology-sidebar a { color: var(--surface); }
.methodology-content .methodology-sidebar p,
.methodology-content .methodology-sidebar li { color: #dbe4d3; }
.methodology-content .methodology-sidebar .eyebrow,
.methodology-content .methodology-sidebar .methodology-updated { color: #e3d4a1; }
.author-credit { align-self: end; display: grid; gap: 4px; padding-left: 20px; border-left: 1px solid #8c9d80; }
.author-credit strong { color: var(--surface); font-size: 1rem; }
.author-credit span { color: #dbe4d3; font-size: .85rem; }
.contact-grid article, .methodology-grid article { border-color: var(--line); }
.contact-email { border-radius: 2px; }
.contact-details blockquote { border-color: var(--primary); background: #eeeee3; }
.legal-content { padding: clamp(24px,5vw,64px); border-radius: 3px; background: var(--surface); }
.legal-content h1 { font-size: clamp(2.5rem,4vw,3.5rem); }
.legal-content h2 { font-family: var(--display); font-weight: 400; font-size: 1.6rem; }
.site-footer { padding: 36px 24px; border-top: 1px solid #bdc6b4; background: #e9ecdf; }
.site-footer p { color: #55614e; font-size: .8rem; line-height: 1.7; }
.footer-links { gap: 12px 24px; }
.footer-links a { color: var(--primary-dark); font-size: .8rem; font-weight: 600; }

@media (hover: hover) {
  .tool-finder-results a:hover { background: #e9ecdf; }
  .feature-list h3 a:hover, .home-article-card h3:hover { text-decoration: underline; text-underline-offset: 5px; }
  .primary-link:hover, .primary-action:hover { background: var(--primary-dark); }
}
@media (min-width: 981px) {
  .workspace .calculator-stage { position: sticky; top: 112px; }
}
@media (max-width: 1080px) {
  .utility-intro { grid-template-columns: 1fr 1fr; gap: 34px; }
  .utility-intro h1 { font-size: 3.3rem; }
  .tool-finder-results { grid-template-columns: 1fr; }
  .article-hero { grid-template-columns: minmax(0,1fr) 230px; gap: 28px; }
}
@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr; }
  .workspace .switcher-list { grid-template-columns: repeat(5,minmax(118px,1fr)); }
  .workspace .resource-panel { display: none; }
  .decision-lab, .library-discovery, .article-reading-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .tool-card > div:last-child { border-left: 0; border-top: 1px solid var(--line); }
  .tool-card { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 820px) {
  main, .article-page, .article-page.library-page, .header-inner { width: calc(100% - 40px); }
  .header-inner { min-height: 74px; gap: 0; }
  .site-header.menu-enhanced .header-actions { flex: 0 0 auto; margin-left: auto; }
  .site-header.menu-enhanced:has(.top-nav:not(.menu-collapsed)) .header-actions { flex-basis: 100%; }
  .brand small { max-width: 210px; font-size: .64rem; }
  .utility-intro { grid-template-columns: 1fr; gap: 34px; padding: 38px 0; }
  .utility-intro h1 { max-width: 660px; font-size: clamp(2.7rem,7vw,4rem); }
  .utility-intro .intro-copy > p:not(.eyebrow) { max-width: 580px; }
  .tool-finder-results { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .workspace { gap: 12px; padding-top: 22px; }
  .workspace .switcher { padding: 0; }
  .workspace .mobile-label { color: var(--ink); font-size: .78rem; font-weight: 600; }
  .workspace .mobile-select { background: var(--surface); }
  .workspace .calculator-stage { padding: 16px; margin-top: 16px; }
  .article-hero { grid-template-columns: 1fr; gap: 8px; }
  .review-note { margin-top: 8px; padding: 16px 20px; border-left: 2px solid var(--primary); background: #eeeee3; }
  .article-intro h1 { margin-bottom: 10px; }
}
@media (max-width: 600px) {
  main, .article-page, .article-page.library-page, .header-inner { width: calc(100% - 32px); }
  .brand strong { font-size: 1.25rem; }
  .brand small { max-width: 170px; }
  .brand-mark { width: 32px; height: 36px; }
  .brand { gap: 8px; }
  .menu-toggle { padding: 0 10px; font-size: .8rem; }
  .utility-intro h1 { font-size: clamp(2.55rem,10.8vw,3.4rem); }
  .utility-intro .intro-copy > p:not(.eyebrow) { font-size: .92rem; }
  .intro-links { gap: 18px; }
  .tool-finder { padding-top: 22px; }
  .tool-finder-results { grid-template-columns: 1fr; }
  .tool-finder-results a { min-height: 65px; grid-template-columns: 32px minmax(0,1fr) 18px; }
  .tool-finder-results strong { font-size: .9rem; }
  .tool-finder-results small { font-size: .75rem; }
  .workspace { margin-bottom: 44px; }
  .workspace .calculator-stage { padding: 10px; }
  .workspace .calculator { padding: 16px; }
  .section-heading h2 { font-size: 1.8rem; }
  .basic-keypad { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .key { min-height: 50px; }
  .screen { min-height: 120px; padding: 16px; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-list article { padding-top: 22px; padding-bottom: 22px; }
  .content-band, .faq-band { margin: 40px 0; }
  .decision-lab { padding: 22px 16px; gap: 24px; margin: 36px 0 44px; }
  .decision-lab-copy h2 { font-size: 2rem; }
  .decision-lab-panel { padding: 22px 16px; }
  .decision-lab-panel h3 { font-size: 1.7rem; }
  .decision-lab-metrics div { padding: 12px 8px; }
  .latest-articles-band { padding: 30px 0; }
  .latest-articles-grid { gap: 16px; }
  .latest-articles-band .home-article-card { min-height: 0; }
  .product-trust-strip { margin: 28px 0; }
  .editorial-signature { grid-template-columns: 1fr; gap: 14px; }
  .editorial-signature .secondary-link { grid-column: 1; justify-self: start; }
  .article-page { padding-top: 24px; }
  .article-intro h1 { font-size: 2.55rem; overflow-wrap: anywhere; }
  .tool-card > div { padding: 22px 16px; }
  .tool-card .form-grid { grid-template-columns: minmax(0, 1fr); }
  .tool-card .field, .tool-card .field input, .tool-card .field select { min-width: 0; max-width: 100%; }
  .tool-result { padding: 18px 14px; }
  .result-main { font-size: 2.2rem; }
  .content-grid { gap: 24px; }
  .topic-hero, .library-hero, .methodology-hero, .guide-directory-hero, .contact-hero { padding: 28px 22px; }
  .topic-hero h1, .library-hero h1, .methodology-hero h1, .guide-directory-hero h1, .contact-hero h1 { font-size: 2.65rem; }
  .article-reading-header { margin: 0; padding: 30px 0; }
  .article-reading-header h1 { font-size: 2.6rem; }
  .article-reading-layout { gap: 28px; }
  .library-discovery { padding: 20px 0 30px; gap: 24px; }
  .article-index-card { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}