:root,
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #eaf4f8;
  --header-bg: rgba(255, 255, 255, 0.94);
  --field-bg: #ffffff;
  --nav-active: #e4f2f7;
  --pill-bg: #f2f4f8;
  --quick-border: #bfdbe5;
  --text: #172033;
  --muted: #61708a;
  --line: #dfe4ee;
  --brand: #00546d;
  --brand-strong: #004258;
  --accent: #2f6f8a;
  --shadow: 0 14px 35px rgba(23, 32, 51, 0.08);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #10151f;
  --surface: #161d2a;
  --surface-soft: #102a36;
  --header-bg: rgba(16, 21, 31, 0.94);
  --field-bg: #101722;
  --nav-active: #123545;
  --pill-bg: #202938;
  --quick-border: #1e5368;
  --text: #edf2f7;
  --muted: #a9b6c8;
  --line: #2a3445;
  --brand: #4fb6d6;
  --brand-strong: #8ad8ee;
  --accent: #7bb7cc;
  --shadow: 0 14px 35px rgba(0, 0, 0, 0.26);
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    color-scheme: dark;
    --bg: #10151f;
    --surface: #161d2a;
    --surface-soft: #102a36;
    --header-bg: rgba(16, 21, 31, 0.94);
    --field-bg: #101722;
    --nav-active: #123545;
    --pill-bg: #202938;
    --quick-border: #1e5368;
    --text: #edf2f7;
    --muted: #a9b6c8;
    --line: #2a3445;
    --brand: #4fb6d6;
    --brand-strong: #8ad8ee;
    --accent: #7bb7cc;
    --shadow: 0 14px 35px rgba(0, 0, 0, 0.26);
  }
}

* {
  box-sizing: border-box;
}

html {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  margin: 0;
}

a {
  color: var(--brand-strong);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--text);
  color: white;
  padding: .7rem 1rem;
  z-index: 10;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  position: sticky;
  top: 0;
  z-index: 5;
}

.header-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  justify-content: flex-end;
}

.brand {
  align-items: center;
  color: var(--text);
  display: inline-flex;
  gap: .8rem;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--brand);
  border-radius: 8px;
  color: white;
  display: inline-flex;
  font-weight: 700;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.brand small {
  color: var(--muted);
  display: block;
  margin-top: .1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  justify-content: flex-end;
}

.site-nav a {
  border-radius: 8px;
  color: var(--text);
  padding: .6rem .75rem;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  background: var(--nav-active);
  color: var(--brand-strong);
}

.theme-menu {
  position: relative;
}

.theme-menu-button {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  gap: .45rem;
  font: inherit;
  min-height: 40px;
  padding: 0 .75rem;
}

.theme-menu-button span {
  color: var(--muted);
  font-size: .86rem;
}

.theme-menu-button strong {
  font-size: .92rem;
  font-weight: 600;
}

.theme-menu-button::after {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--muted);
  content: "";
  margin-left: .2rem;
}

.theme-menu-button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.theme-menu-list {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  list-style: none;
  margin: .35rem 0 0;
  min-width: 100%;
  padding: .25rem;
  position: absolute;
  right: 0;
  top: 100%;
  z-index: 20;
}

.theme-menu-list button {
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  display: block;
  font: inherit;
  padding: .55rem .7rem;
  text-align: left;
  width: 100%;
}

.theme-menu-list button:hover,
.theme-menu-list button[aria-selected="true"] {
  background: var(--nav-active);
  color: var(--brand-strong);
}

.hero,
.page-title,
.article {
  margin: 0 auto;
  max-width: 1120px;
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2rem);
}

.hero {
  min-height: 440px;
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  max-width: 780px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.3rem, 6vw, 5rem);
  line-height: 1;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  color: var(--muted);
  line-height: 1.65;
}

.eyebrow {
  color: var(--accent);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.search {
  margin-top: 2rem;
  max-width: 680px;
}

.search label {
  display: block;
  font-weight: 700;
  margin-bottom: .55rem;
}

.search input {
  background: var(--field-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  min-height: 52px;
  padding: 0 1rem;
  width: 100%;
}

.search-results {
  margin-top: .8rem;
}

.search-results a {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
  margin-top: .5rem;
  padding: .8rem 1rem;
  text-decoration: none;
}

.search-results a span {
  color: var(--muted);
  display: block;
  font-size: .8rem;
  margin-bottom: .25rem;
}

.search-results a strong {
  color: var(--text);
}

.section {
  margin: 0 auto;
  max-width: 1120px;
  padding: 1rem clamp(1rem, 4vw, 2rem) 4rem;
}

.section-heading {
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid.three {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.quick-grid {
  display: grid;
  gap: .8rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.quick-card {
  background: var(--surface-soft);
  border: 1px solid var(--quick-border);
  border-radius: 8px;
  color: var(--text);
  display: block;
  padding: 1rem;
  text-decoration: none;
}

.quick-card strong,
.quick-card span {
  display: block;
}

.quick-card span {
  color: var(--muted);
  line-height: 1.5;
  margin-top: .4rem;
}

.card,
.resource-group,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1.3rem;
}

.card h3 a {
  color: var(--text);
  text-decoration: none;
}

.product-card,
.intent-card {
  min-height: 174px;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-bottom: .9rem;
}

.meta-line span {
  background: var(--pill-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: .78rem;
  padding: .24rem .55rem;
}

.card time,
.article time {
  color: var(--muted);
  font-size: .92rem;
}

.filters {
  align-items: end;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 1rem;
  padding: 1rem;
}

.filters label span {
  color: var(--muted);
  display: block;
  font-size: .9rem;
  margin-bottom: .35rem;
}

.filters select {
  appearance: none;
  background: var(--field-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font: inherit;
  min-height: 46px;
  padding: 0 .85rem;
  width: 100%;
}

.empty-state {
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: 8px;
  margin-top: 1rem;
  padding: 1rem;
}

.resources {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.resource-group ul {
  margin: 0;
  padding-left: 1.1rem;
}

.resource-group li + li {
  margin-top: .7rem;
}

.contact-list {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.contact-card {
  color: var(--text);
  display: block;
  text-decoration: none;
}

.contact-card span {
  color: var(--muted);
  display: block;
  margin-bottom: .5rem;
}

.article {
  max-width: 820px;
}

.article-body {
  margin-top: 2rem;
}

.article-body p {
  color: var(--text);
  font-size: 1.08rem;
}

.article-section {
  border-top: 1px solid var(--line);
  padding: 1.35rem 0;
}

.article-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.article-section h2 {
  font-size: 1.35rem;
  margin-bottom: .65rem;
}

.article-section ul,
.article-section ol {
  color: var(--text);
  line-height: 1.65;
  margin: 0;
  padding-left: 1.25rem;
}

.article-section li + li {
  margin-top: .45rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 2rem;
}

.article-back-bottom {
  margin-bottom: 0;
  margin-top: 2rem;
}

.site-footer {
  align-items: start;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  padding: 2rem clamp(1rem, 4vw, 4rem);
}

.footer-links {
  display: grid;
  gap: .5rem;
}

@media (max-width: 720px) {
  .site-header,
  .site-footer {
    display: block;
  }

  .site-nav {
    justify-content: flex-start;
    margin-top: 1rem;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .site-nav a {
    padding-left: .55rem;
    padding-right: .55rem;
  }
}