:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #edf4f7;
  --ink: #16202a;
  --muted: #5a6875;
  --line: #d8e0e7;
  --brand: #176b87;
  --brand-strong: #0f4f65;
  --accent: #24a08d;
  --warning: #b56b00;
  --radius: 8px;
  --shadow: 0 12px 32px rgba(18, 38, 56, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
}

a {
  color: var(--brand-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius);
  z-index: 20;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 247, 251, 0.92);
  backdrop-filter: blur(14px);
}

.page-shell {
  width: min(1160px, calc(100vw - 2rem));
  margin: 0 auto;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  color: var(--ink);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  letter-spacing: 0;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
}

.nav a {
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav a:hover {
  background: var(--surface-soft);
  color: var(--ink);
  text-decoration: none;
}

.hero {
  padding: 3.5rem 0 2rem;
}

.hero-grid,
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.75fr);
  gap: 1.2rem;
  align-items: start;
}

.panel,
.card,
.aside-card,
.article-card,
.table-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel {
  padding: clamp(1.2rem, 3vw, 2rem);
}

.eyebrow,
.pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  border: 1px solid rgba(23, 107, 135, 0.22);
  border-radius: 999px;
  background: #e7f4f7;
  color: var(--brand-strong);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0;
  padding: 0.28rem 0.55rem;
}

.display {
  max-width: 13ch;
  margin: 1rem 0 0.8rem;
  font-size: clamp(2.2rem, 6vw, 4.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

.lead {
  max-width: 66ch;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  border-radius: 7px;
  border: 1px solid var(--brand);
  background: var(--brand);
  color: #fff;
  font-weight: 750;
  padding: 0.6rem 0.8rem;
}

.button.is-secondary {
  background: var(--surface);
  color: var(--brand-strong);
}

.button:hover {
  text-decoration: none;
  filter: brightness(0.98);
}

.metric-grid,
.card-grid,
.article-grid,
.link-grid {
  display: grid;
  gap: 1rem;
}

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

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

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

.card,
.article-card,
.aside-card,
.table-card {
  padding: 1rem;
}

.metric {
  min-height: 8rem;
}

.metric-value {
  font-size: 2.15rem;
  font-weight: 850;
  color: var(--brand-strong);
}

.section {
  padding: 1.5rem 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-title,
.article-title {
  margin: 0;
  letter-spacing: 0;
}

.section-copy,
.card-copy,
.muted {
  color: var(--muted);
  line-height: 1.65;
}

.article-title {
  font-size: 1.15rem;
  line-height: 1.25;
  margin-top: 0.7rem;
}

.article {
  padding: 0 0 2.5rem;
}

.article h2 {
  margin-top: 2rem;
}

.article p,
.article li {
  color: #34424f;
  line-height: 1.75;
}

.article ul,
.article ol {
  padding-left: 1.2rem;
}

.facts {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0;
}

.fact {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.65rem;
}

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

.status {
  border-left: 4px solid var(--accent);
  background: #e9f8f5;
  padding: 0.8rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: #164d45;
}

.status.is-warning {
  border-left-color: var(--warning);
  background: #fff5e7;
  color: #744600;
}

.source-list {
  display: grid;
  gap: 0.75rem;
}

.source {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: #fbfdff;
}

.tool-form {
  display: grid;
  gap: 1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  font-weight: 750;
  color: var(--ink);
}

.field input,
.field select {
  width: 100%;
  min-height: 2.55rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  padding: 0.55rem 0.65rem;
  font: inherit;
}

.check-row {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
}

.check-row input {
  width: 1.15rem;
  height: 1.15rem;
}

.checker-list {
  display: grid;
  gap: 0.45rem;
  list-style: none;
  padding-left: 0;
}

.checker-list li {
  border-left: 4px solid var(--warning);
  border-radius: 0 7px 7px 0;
  background: #fff5e7;
  padding: 0.55rem 0.7rem;
}

.checker-list li.pass {
  border-left-color: var(--accent);
  background: #e9f8f5;
}

.checker-list li.fail {
  border-left-color: var(--warning);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 860px) {
  .header-row,
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-grid,
  .content-grid,
  .card-grid,
  .article-grid,
  .form-grid,
  .metric-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .display {
    max-width: 100%;
  }

  .fact {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}