:root {
  --ink: #17211b;
  --muted: #5d685f;
  --paper: #f8f7f2;
  --panel: #ffffff;
  --line: #d9ddd4;
  --aqua: #4ea99a;
  --blue: #426fa3;
  --gold: #c08a2c;
  --green: #5a8f4d;
  --accent: #cf4f2f;
  --shadow: 0 18px 45px rgba(35, 43, 36, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

img {
  display: block;
  max-width: 100%;
}

.site-header,
.site-footer,
.section,
.hero,
.topic-hero,
.tool-hero,
.plain-hero,
.article-shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  min-width: 310px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  font-weight: 800;
}

.brand small {
  display: block;
  max-width: 360px;
  color: var(--muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: nowrap;
  gap: 6px;
  min-width: 0;
  overflow-x: auto;
  font-size: 14px;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.main-nav a {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 8px 11px;
  white-space: nowrap;
}

.main-nav a:hover {
  background: rgba(207, 79, 47, 0.08);
}

.main-nav a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.breadcrumbs {
  width: min(1180px, calc(100% - 40px));
  margin: 18px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: underline;
  text-decoration-color: rgba(36, 50, 66, 0.25);
}

.breadcrumbs span[aria-current="page"] {
  color: var(--ink);
}

.sitemap-section h2 {
  margin-bottom: 16px;
}

.hero {
  min-height: min(760px, calc(100vh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 32px;
  align-items: center;
  padding: 52px 0 48px;
}

.hero img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero h1,
.topic-hero h1,
.plain-hero h1,
.tool-hero h1 {
  margin: 10px 0 16px;
  max-width: 900px;
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1;
  letter-spacing: -0.035em;
}

.hero p,
.topic-hero p,
.plain-hero p,
.tool-hero p {
  max-width: 700px;
  color: var(--muted);
  font-size: 18px;
}

.eyebrow,
.kicker {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  background: #fff;
  font-weight: 750;
}

.button.primary {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}

.section {
  padding: 56px 0;
}

.intro-grid,
.topic-layout,
.tool-grid,
.split-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  gap: 32px;
  align-items: start;
}

.section h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  align-items: start;
  gap: 28px;
  margin-bottom: 20px;
}

.section-heading h2 {
  max-width: 820px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.metric-strip div {
  min-height: 96px;
  display: grid;
  align-content: center;
  padding: 16px;
  background: #fff;
}

.metric-strip strong {
  font-size: 32px;
}

.metric-strip span,
.source-list span,
.check-list span {
  color: var(--muted);
  font-size: 13px;
}

.ad-slot {
  width: min(1180px, calc(100% - 40px));
  min-height: 96px;
  display: grid;
  place-items: center;
  gap: 3px;
  margin: 16px auto;
  border: 1px dashed #aeb6aa;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.54);
  color: var(--muted);
  text-align: center;
}

.ad-slot strong {
  color: var(--ink);
}

.managed-ad {
  overflow: hidden;
}

.managed-ad .adsbygoogle {
  width: 100%;
}

.mobile-only-ad {
  display: none;
}

.topic-grid,
.article-grid,
.source-index {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.article-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-grid.compact {
  margin-top: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.source-index {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.topic-tile,
.article-card,
.source-index article,
.problem-route-card,
.decision-module,
.owner-feedback-module,
.feedback-signal-card,
.module-grid a,
.check-item,
.keyword-map article,
.brief-list article,
.affiliate-box,
.trust-panel,
.result-panel,
.signal-card {
  min-height: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: var(--panel);
}

.offer-list {
  display: grid;
  gap: 8px;
  margin: 14px 0;
}

.offer-list a,
.offer-placeholder {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #f8f7f2;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.offer-list a strong {
  color: var(--ink);
}

.offer-placeholder {
  border-style: dashed;
}

.trust-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.9fr);
  gap: 18px;
  margin: 22px 0 28px;
  background: #f8fbf7;
}

.trust-panel h2 {
  margin: 6px 0 10px;
}

.trust-panel p,
.trust-panel dd,
.trust-limitation {
  color: var(--muted);
}

.trust-meta {
  margin: 0;
  display: grid;
  gap: 10px;
}

.trust-meta div {
  display: grid;
  gap: 3px;
}

.trust-meta dt {
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
}

.trust-meta dd {
  margin: 0;
  font-weight: 750;
}

.trust-panel .check-list,
.trust-panel .trust-limitation,
.trust-panel .button {
  grid-column: 1 / -1;
}

.trust-limitation {
  margin: 0;
}

.topic-tile h3,
.article-card h3,
.source-index h2 {
  margin: 12px 0 10px;
  font-size: 21px;
  line-height: 1.18;
}

.module-grid,
.checklist-grid,
.problem-route-grid,
.keyword-map,
.brief-list {
  display: grid;
  gap: 16px;
}

.problem-route-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.problem-route-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(180deg, #fff, #f8fbf7);
}

.problem-route-card h3 {
  margin: 0;
  font-size: 20px;
}

.problem-route-card p {
  color: var(--muted);
}

.problem-route-card .button {
  margin-top: auto;
}

.decision-module,
.owner-feedback-module {
  min-height: 0;
}

.decision-module {
  margin-bottom: 28px;
  background: #fffdf6;
}

.owner-feedback-module {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
  background: #f8fbf7;
}

.owner-feedback-module > p,
.feedback-signal-card p,
.feedback-signal-card small,
.feedback-signal-card li,
.buyer-check span {
  color: var(--muted);
}

.feedback-signal-list {
  display: grid;
  gap: 14px;
}

.feedback-signal-card {
  display: grid;
  gap: 10px;
  background: #fff;
}

.feedback-signal-card h3 {
  margin: 0;
  font-size: 18px;
}

.feedback-signal-card p,
.feedback-signal-card ul {
  margin: 0;
}

.buyer-check {
  display: grid;
  gap: 4px;
  border-left: 4px solid var(--aqua);
  padding: 10px 12px;
  background: #f3faf8;
}

.feedback-signal-card summary {
  cursor: pointer;
  font-weight: 800;
}

.decision-module h2 {
  margin: 6px 0 16px;
}

.decision-table {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.decision-table div {
  display: grid;
  grid-template-columns: minmax(150px, 0.45fr) 1fr;
  gap: 12px;
  padding: 12px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.decision-table div:last-child {
  border-bottom: 0;
}

.decision-table span,
.commercial-module p,
.commercial-module li span {
  color: var(--muted);
}

.commercial-module ul {
  display: grid;
  gap: 10px;
  margin: 14px 0;
  padding: 0;
  list-style: none;
}

.commercial-module li {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.commercial-module li:last-child {
  border-bottom: 0;
}

.module-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.module-grid a {
  display: grid;
  gap: 8px;
}

.module-grid strong {
  font-size: 20px;
}

.module-grid span,
.check-item p,
.check-item small {
  color: var(--muted);
}

.config-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.config-table div {
  display: grid;
  grid-template-columns: minmax(160px, 0.7fr) 1fr;
  gap: 10px;
  padding: 12px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.config-table div:last-child {
  border-bottom: 0;
}

.config-table span {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.checklist-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.check-item span {
  display: inline-flex;
  width: max-content;
  border-radius: 999px;
  padding: 4px 8px;
  background: #eef3eb;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.check-item.needs-owner-input span {
  background: #f5eddb;
  color: #805914;
}

.check-item h3 {
  margin: 12px 0 8px;
}

.keyword-map {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.keyword-map article h3,
.brief-list article h3 {
  margin: 20px 0 8px;
}

.brief-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.topic-tile p,
.article-card p,
.source-index p {
  color: var(--muted);
}

.topic-tile ul,
.check-list,
.idea-list,
.source-list,
.steps {
  margin: 0;
  padding-left: 20px;
}

.topic-tile li,
.check-list li,
.idea-list li,
.source-list li,
.steps li {
  margin: 8px 0;
}

.topic-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #eef3eb;
}

.topic-icon svg {
  width: 27px;
  height: 27px;
  fill: currentColor;
}

.topic-icon.large {
  width: 72px;
  height: 72px;
}

.topic-icon.large svg {
  width: 42px;
  height: 42px;
}

.aqua .topic-icon,
.topic-hero.aqua {
  color: #1f6f64;
  background: #e2f3ef;
}

.blue .topic-icon,
.topic-hero.blue {
  color: #294f80;
  background: #e3edf7;
}

.gold .topic-icon,
.topic-hero.gold {
  color: #805914;
  background: #f5eddb;
}

.green .topic-icon,
.topic-hero.green {
  color: #426d39;
  background: #e7f0e2;
}

.intent-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
}

.topic-hero,
.tool-hero,
.plain-hero {
  margin-top: 28px;
  border-radius: 8px;
  padding: 42px;
}

.tool-hero,
.plain-hero {
  background: #fff;
  border: 1px solid var(--line);
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.keyword-cloud span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  background: #fff;
  color: var(--muted);
  font-size: 14px;
}

.source-band,
.split-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.source-list li {
  display: grid;
  gap: 2px;
}

.article-shell {
  padding: 42px 0 64px;
}

.article-featured-image,
.article-inline-media,
.decision-table-figure {
  margin: 28px 0;
}

.article-featured-image img,
.article-inline-media img {
  width: 100%;
  height: auto;
  border-radius: 18px;
}

.article-featured-image img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-bullets {
  padding-left: 22px;
}

.citation-ref {
  margin-left: 0.2em;
  font-size: 0.75em;
  vertical-align: super;
}

.citation-ref a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.decision-table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
}

table.decision-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--panel);
}

table.decision-table caption {
  padding: 16px;
  font-weight: 800;
  text-align: left;
}

table.decision-table th,
table.decision-table td {
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

table.decision-table th {
  background: #eef4ee;
}

.article-header {
  max-width: 820px;
}

.article-header h1 {
  margin: 10px 0 16px;
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1;
  letter-spacing: 0;
}

.article-header p {
  color: var(--muted);
  font-size: 18px;
}

.byline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.byline span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: #fff;
  color: var(--muted);
  font-size: 13px;
}

.article-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 36px;
  margin-top: 42px;
}

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

.article-aside {
  order: 2;
  display: grid;
  gap: 16px;
  align-content: start;
}

.article-aside .ad-slot {
  width: 100%;
  margin: 0;
}

.prose {
  max-width: 790px;
}

.prose.narrow {
  max-width: 860px;
}

.prose h2 {
  margin-top: 34px;
  font-size: 30px;
}

.prose p,
.prose li {
  color: #344038;
  font-size: 17px;
}

details {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

.tool-callout,
.tool-callout-card {
  display: block;
  border-radius: 8px;
  padding: 16px;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}

.tool-callout-card {
  color: #fff;
}

.tool-callout-card h2 {
  margin: 6px 0;
  font-size: 1.15rem;
}

.tool-callout-card p {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 600;
}

.tool-callout-card .eyebrow {
  color: rgba(255, 255, 255, 0.72);
}

.tool-callout-card .button {
  background: #fff;
  color: var(--accent);
}

.calculator {
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: #fff;
}

.calculator label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 700;
}

.calculator input,
.calculator select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

.calculator small {
  color: var(--muted);
  font-weight: 650;
}

.water-lab-form {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.water-lab-form .button {
  grid-column: 1 / -1;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.signal-card {
  display: grid;
  gap: 8px;
}

.signal-card h3 {
  margin: 4px 0;
  font-size: 20px;
  line-height: 1.18;
}

.signal-card p {
  margin: 0;
  color: var(--muted);
}

.signal-card a {
  font-weight: 800;
  color: var(--accent);
}

.water-lab-result ul {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.search-shell {
  display: grid;
  gap: 20px;
}

.search-box {
  max-width: 760px;
}

.search-box input {
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  font: inherit;
}

.search-results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.search-status {
  min-height: 1.5em;
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.result-panel strong {
  display: block;
  margin: 12px 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  max-width: 780px;
  margin: 8px 0 0;
}

.footer-links {
  display: grid;
  gap: 8px;
  min-width: 180px;
}

code {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 5px;
  background: #fff;
}

@media (max-width: 900px) {
  .site-header,
  .site-footer,
  .hero,
  .intro-grid,
  .topic-layout,
  .tool-grid,
  .split-band,
  .article-body,
  .trust-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .topic-grid,
  .article-grid,
  .article-grid.compact,
  .search-results,
  .source-index,
  .problem-route-grid,
  .signal-grid,
  .module-grid,
  .checklist-grid,
  .keyword-map,
  .brief-list,
  .metric-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-aside {
    order: 0;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .mobile-only-ad {
    display: grid;
  }

  .site-header,
  .site-footer,
  .section,
  .hero,
  .topic-hero,
  .tool-hero,
  .plain-hero,
  .article-shell,
  .ad-slot {
    width: min(100% - 24px, 1180px);
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .brand {
    min-width: 0;
  }

  .main-nav,
  .section-heading {
    width: 100%;
  }

  .main-nav {
    justify-content: flex-start;
    overflow-x: auto;
    scroll-padding-inline: 4px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .hero h1,
  .topic-hero h1,
  .plain-hero h1,
  .tool-hero h1,
  .article-header h1 {
    font-size: 38px;
  }

  .topic-grid,
  .article-grid,
  .article-grid.compact,
  .search-results,
  .source-index,
  .problem-route-grid,
  .signal-grid,
  .module-grid,
  .checklist-grid,
  .keyword-map,
  .brief-list,
  .metric-strip {
    grid-template-columns: 1fr;
  }

  .config-table div,
  .decision-table div,
  .water-lab-form {
    grid-template-columns: 1fr;
  }

  .topic-hero,
  .tool-hero,
  .plain-hero {
    padding: 24px;
  }
}