:root {
  color-scheme: light;
  --ink: #142b33;
  --muted: #52666c;
  --paper: #f7f5ef;
  --surface: #ffffff;
  --deep: #123d46;
  --teal: #0b6970;
  --aqua: #d8eeeb;
  --gold: #f0c66d;
  --line: #ccd8d8;
  --focus: #c43f15;
  --shadow: 0 16px 38px rgb(19 50 57 / 10%);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: var(--teal);
  text-underline-offset: 0.18em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: 0.35rem;
  background: var(--surface);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 14%, rgb(240 198 109 / 35%), transparent 24rem),
    linear-gradient(135deg, #0d343d, #155661);
  color: #fff;
}

.site-header::after {
  position: absolute;
  right: -8rem;
  bottom: -12rem;
  width: 28rem;
  height: 28rem;
  border: 2px solid rgb(255 255 255 / 13%);
  border-radius: 50%;
  content: "";
}

.header-inner,
main,
footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.header-inner {
  position: relative;
  z-index: 1;
  padding: clamp(3.5rem, 8vw, 7rem) 0 4rem;
}

.eyebrow {
  margin: 0 0 0.55rem;
  color: currentColor;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  max-width: 75ch;
}

h1 {
  max-width: 18ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.25;
}

.lede {
  max-width: 64ch;
  margin: 1.5rem 0 0;
  color: #e6f2f2;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.scope-note {
  max-width: 68ch;
  margin: 1.2rem 0 0;
  padding-left: 1rem;
  border-left: 4px solid var(--gold);
  color: #d4e7e7;
}

main {
  padding: 4rem 0 5rem;
}

section + section {
  margin-top: 5rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin: 0;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--surface);
}

.filters legend {
  padding: 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.filters label {
  cursor: pointer;
  font-weight: 650;
}

.status {
  margin: 1.2rem 0;
  color: var(--muted);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.tool-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.tool-card[hidden] {
  display: none;
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.conditioning-badge,
.validation-badge {
  display: inline-flex;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.conditioning-badge {
  background: var(--aqua);
  color: #174d52;
}

.validation-badge {
  border: 1px solid var(--line);
  color: var(--muted);
}

.question {
  margin: 0.65rem 0 1.2rem;
  color: var(--deep);
  font-size: 1.08rem;
  font-weight: 700;
}

.card-facts {
  margin: 0;
}

.card-facts > div {
  display: grid;
  grid-template-columns: 7.2rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 0.75rem 0;
  border-top: 1px solid #e4ebea;
}

dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

dd {
  margin: 0;
}

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

.boundary {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--gold);
  background: #fff8e7;
}

.boundary p,
.boundary ul,
.limitation,
.versions {
  margin: 0.35rem 0 0;
}

.limitation {
  color: var(--muted);
}

.versions {
  margin-top: auto;
  padding-top: 1.2rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.card-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.65rem 0.95rem;
  border-radius: 0.45rem;
  font-weight: 800;
}

.primary-action {
  background: var(--teal);
  color: #fff;
  text-decoration: none;
}

.secondary-action {
  border: 1px solid var(--teal);
}

.table-wrap {
  overflow-x: auto;
  margin-top: 1.3rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
}

table {
  width: 100%;
  min-width: 1050px;
  border-collapse: collapse;
}

th,
td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #e6f1ef;
  color: var(--deep);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.interpretation {
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: 1rem;
  background: var(--deep);
  color: #fff;
}

.interpretation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.4rem;
}

.interpretation article {
  padding: 1.25rem;
  border: 1px solid rgb(255 255 255 / 25%);
  border-radius: 0.7rem;
  background: rgb(255 255 255 / 7%);
}

.interpretation p {
  color: #d7e7e7;
}

.error-panel {
  padding: 1rem;
  border: 2px solid #a73518;
  background: #fff;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

footer div {
  display: grid;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 760px) {
  .section-heading,
  footer {
    align-items: stretch;
    flex-direction: column;
  }

  .tool-grid,
  .interpretation-grid {
    grid-template-columns: 1fr;
  }

  .card-facts > div {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}