:root {
  --navy: #0b1b2b;
  --cyan: #38bdf8;
  --link: #0b5ed7;
  --bg: #ffffff;
  --fg: #1a2430;
  --muted: #5b6b7b;
  --rule: #e3e9ef;
  --card: #f4f7fa;
  --paper: #ffffff;
  --paper-fg: #1a2430;
  --paper-muted: #52606d;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1b2b;
    --fg: #e8eef4;
    --muted: #9fb2c3;
    --rule: #1e3348;
    --card: #102438;
    --link: #38bdf8;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-padding-top: 1rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a {
  color: var(--link);
  text-underline-offset: 0.16em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  background: var(--bg);
  color: var(--fg);
  border: 2px solid var(--cyan);
  border-radius: 6px;
  transform: translateY(-160%);
}

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

header.site {
  border-bottom: 1px solid var(--rule);
}

header.site .inner {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

header.site img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

header.site a.name {
  color: var(--fg);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

header.site nav {
  margin-left: auto;
  display: flex;
  gap: 0.25rem;
}

header.site nav a {
  min-height: 44px;
  padding: 0.45rem 0.55rem;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

header.site nav a:hover,
header.site nav a[aria-current="page"] {
  color: var(--link);
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 4rem;
}

.breadcrumb {
  margin: 0.15rem 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: inherit;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 7vw, 2.65rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h2 {
  margin: 2.5rem 0 0.65rem;
  font-size: 1.4rem;
  line-height: 1.25;
}

h3 {
  margin: 1.5rem 0 0.4rem;
  font-size: 1.08rem;
  line-height: 1.35;
}

p,
ul,
ol,
dl {
  margin-top: 0.65rem;
  margin-bottom: 1rem;
}

ul,
ol {
  padding-left: 1.35rem;
}

li {
  margin: 0.35rem 0;
}

.eyebrow,
.reviewed {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.eyebrow {
  margin-bottom: 0.65rem;
  text-transform: uppercase;
}

.lede {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.14rem;
}

.reviewed {
  margin: 1rem 0 1.75rem;
}

.fact {
  margin: 1.75rem 0;
  padding: 1rem 1.1rem;
  background: var(--card);
  border-left: 5px solid var(--cyan);
  border-radius: 0 10px 10px 0;
}

.fact p:last-child {
  margin-bottom: 0;
}

.field-sheet {
  margin: 1.75rem 0;
  padding: 1.1rem;
  background: var(--paper);
  color: var(--paper-fg);
  border: 1px solid #cbd5df;
  border-top: 6px solid var(--navy);
  border-radius: 4px;
  box-shadow: 0 5px 18px rgb(11 27 43 / 9%);
}

.field-sheet h2,
.field-sheet h3 {
  color: var(--paper-fg);
}

.field-sheet h2 {
  margin-top: 0;
}

.field-sheet .sheet-note {
  color: var(--paper-muted);
  font-size: 0.9rem;
}

.checklist {
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  min-height: 2rem;
  padding: 0.32rem 0 0.45rem 2rem;
  border-bottom: 1px solid #e0e6eb;
}

.checklist li::before {
  content: "";
  position: absolute;
  top: 0.58rem;
  left: 0.15rem;
  width: 1rem;
  height: 1rem;
  border: 2px solid #4a5968;
  border-radius: 2px;
}

.record-grid {
  display: grid;
  grid-template-columns: minmax(8.5rem, 0.7fr) minmax(12rem, 1.3fr);
  margin: 1rem 0;
  border-top: 1px solid #cbd5df;
}

.record-grid dt,
.record-grid dd {
  margin: 0;
  padding: 0.55rem 0;
  border-bottom: 1px solid #dce3e9;
}

.record-grid dt {
  padding-right: 0.8rem;
  font-weight: 700;
}

.record-grid dd {
  color: var(--paper-muted);
}

.sample-register {
  width: 100%;
  margin: 1rem 0;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.sample-register th,
.sample-register td {
  padding: 0.55rem 0.45rem;
  border: 1px solid #cbd5df;
  text-align: left;
  vertical-align: top;
}

.sample-register th {
  background: #eef3f6;
}

.product-note {
  margin: 2.75rem 0;
  padding: 1.2rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 12px;
}

.product-note h2 {
  margin-top: 0;
}

.app-store-cta {
  min-height: 44px;
  margin-top: 0.4rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--rule);
  border-radius: 9px;
  background: var(--bg);
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  opacity: 1;
}

.sources,
.related {
  padding-top: 0.15rem;
  border-top: 1px solid var(--rule);
}

.sources li {
  margin-bottom: 0.65rem;
}

.guide-list {
  padding: 0;
  list-style: none;
}

.guide-list li {
  margin: 0 0 1rem;
  padding: 1rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 12px;
}

.guide-list a {
  display: inline-block;
  font-size: 1.08rem;
  font-weight: 700;
}

.guide-list p {
  margin-bottom: 0;
  color: var(--muted);
}

footer.site {
  margin-top: 2rem;
  border-top: 1px solid var(--rule);
}

footer.site .inner {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.4rem 1.25rem 2.2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

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

@media (max-width: 34rem) {
  header.site .inner {
    align-items: flex-start;
  }

  header.site nav {
    width: 100%;
    margin-left: -0.55rem;
  }

  .record-grid {
    grid-template-columns: 1fr;
  }

  .record-grid dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .record-grid dd {
    padding-top: 0.15rem;
  }

  .sample-register,
  .sample-register tbody,
  .sample-register tr,
  .sample-register td {
    display: block;
    width: 100%;
  }

  .sample-register thead {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .sample-register tr {
    margin-bottom: 0.85rem;
    border: 1px solid #cbd5df;
  }

  .sample-register td {
    padding: 0.55rem 0.65rem;
    border: 0;
    border-bottom: 1px solid #dce3e9;
  }

  .sample-register td:last-child {
    border-bottom: 0;
  }

  .sample-register td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 0.1rem;
    color: var(--paper-fg);
    font-weight: 700;
  }
}

@media print {
  :root {
    color-scheme: light;
  }

  header.site,
  footer.site,
  .breadcrumb,
  .product-note,
  .related,
  .skip-link {
    display: none;
  }

  body {
    color: #111111;
    background: #ffffff;
    font-size: 11pt;
  }

  main {
    max-width: none;
    padding: 0;
  }

  a {
    color: inherit;
  }

  .field-sheet {
    break-inside: avoid;
    box-shadow: none;
  }
}