/* Flint Digital — single stylesheet, no external resources. */

:root {
  --bg: #faf7f2;
  --surface: #ffffff;
  --ink: #2b2420;
  --muted: #56493f;
  --accent: #9c3a1f;
  --accent-dk: #71290f;
  --line: #e0d5c6;
  --line-strong: #c9b9a4;
  --panel: #f2eade;
  --note: #fbf2e0;
  --note-line: #d8bd85;
  --caution: #f6ebe6;
  --caution-line: #d4ab9b;
  --radius: 3px;
  --measure: 70ch;
  --shell: 1120px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  overflow-wrap: break-word;
}

.wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 20px;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent-dk);
  color: #fff;
  padding: 10px 16px;
  z-index: 50;
}
.skip:focus {
  left: 12px;
  top: 12px;
  color: #fff;
}

/* ---------- Header ---------- */

.site-head {
  border-bottom: 2px solid var(--ink);
  background: var(--surface);
}

.head-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  margin-right: auto;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--accent-dk);
  color: #fdf8f2;
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 0.02em;
}

.brand-name {
  font-family: var(--serif);
  font-size: 21px;
  letter-spacing: 0.01em;
}

.brand-sub {
  display: block;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  font: inherit;
  font-size: 15px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: 4px 0;
  font-size: 15.5px;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent-dk);
}

/* ---------- Layout ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 272px;
  gap: 48px;
  align-items: start;
  padding: 40px 0 8px;
}

.layout.single { grid-template-columns: minmax(0, 1fr); }

main { min-width: 0; }

main > * { max-width: var(--measure); }
main > .full { max-width: none; }

.sidebar {
  position: sticky;
  top: 20px;
  font-size: 15.5px;
}

.sidebar h2 {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
  border: 0;
  padding: 0;
}

.sidebar nav + h2 { margin-top: 30px; }

.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.sidebar li { border-bottom: 1px solid var(--line); }

.sidebar a {
  display: block;
  padding: 8px 0;
  text-decoration: none;
  color: var(--ink);
  line-height: 1.4;
}
.sidebar a:hover { color: var(--accent-dk); text-decoration: underline; }
.sidebar a[aria-current="page"] { color: var(--accent-dk); font-weight: 600; }
.sidebar a.active { color: var(--accent-dk); font-weight: 600; }

/* ---------- Typography ---------- */

h1 {
  font-family: var(--serif);
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}

h2 {
  font-family: var(--serif);
  font-size: clamp(23px, 3.4vw, 28px);
  line-height: 1.25;
  margin: 46px 0 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

h3 {
  font-family: var(--sans);
  font-size: 18px;
  letter-spacing: 0.01em;
  margin: 30px 0 10px;
}

p, li { color: var(--ink); }
p { margin: 0 0 18px; }

main ul, main ol { padding-left: 22px; margin: 0 0 20px; }
main li { margin-bottom: 9px; }

.lede {
  font-size: 19.5px;
  line-height: 1.55;
  color: var(--muted);
  margin-bottom: 26px;
}

.eyebrow {
  font-size: 12.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent-dk);
  margin: 0 0 12px;
}

/* ---------- Blocks ---------- */

.hero {
  padding: 46px 0 34px;
  border-bottom: 1px solid var(--line);
}
.hero p { max-width: var(--measure); }

.quick {
  border: 1px solid var(--line-strong);
  border-left: 5px solid var(--accent);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px 20px 4px;
  margin: 0 0 30px;
}
.quick h2, .quick h3 {
  margin: 0 0 10px;
  border: 0;
  padding: 0;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-dk);
}

.note {
  background: var(--note);
  border: 1px solid var(--note-line);
  border-radius: var(--radius);
  padding: 18px 20px 4px;
  margin: 28px 0;
}

.caution {
  background: var(--caution);
  border: 1px solid var(--caution-line);
  border-radius: var(--radius);
  padding: 18px 20px 4px;
  margin: 28px 0;
}

.note h3, .caution h3, .panel h3 { margin-top: 0; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px 6px;
  margin: 28px 0;
}

/* Affiliate disclosure — body-size, never small print */
.disclosure {
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px 22px 6px;
  margin: 28px 0;
  font-size: 17px;
}
.disclosure h2, .disclosure h3 {
  margin: 0 0 10px;
  border: 0;
  padding: 0;
  font-family: var(--sans);
  font-size: 17px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink);
}

.paid-note {
  font-size: 16px;
  color: var(--muted);
  margin: 10px 0 0;
  max-width: var(--measure);
}

.outlink {
  display: inline-block;
  margin: 4px 0 0;
  padding: 12px 20px;
  background: var(--accent-dk);
  color: #fdf8f2;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 16.5px;
}
.outlink:hover { background: var(--accent); color: #fff; text-decoration: underline; }

/* ---------- Cards / index ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  margin: 22px 0 30px;
  list-style: none;
  padding: 0;
}

.cards li {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 18px 20px 18px 0;
  margin: 0;
}

.cards li:nth-child(2n) { padding-right: 0; border-right: 0; }

.cards h3 { margin: 0 0 6px; font-size: 17.5px; }
.cards h3 a { text-decoration: none; }
.cards h3 a:hover { text-decoration: underline; }
.cards p { margin: 0; font-size: 16px; color: var(--muted); }

/* ---------- Tables ---------- */

.table-scroll { overflow-x: auto; margin: 24px 0; }

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 520px;
  font-size: 16px;
}

caption {
  text-align: left;
  font-size: 15px;
  color: var(--muted);
  padding-bottom: 8px;
}

th, td {
  border: 1px solid var(--line-strong);
  padding: 11px 13px;
  text-align: left;
  vertical-align: top;
}

thead th { background: var(--panel); font-size: 15px; letter-spacing: 0.02em; }

/* ---------- Definition list ---------- */

dl.terms { margin: 24px 0; }
dl.terms dt { font-weight: 600; margin-top: 16px; }
dl.terms dd { margin: 4px 0 0; color: var(--muted); }

/* ---------- Steps ---------- */

ol.steps { counter-reset: step; list-style: none; padding-left: 0; }
ol.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 46px;
  margin-bottom: 20px;
}
ol.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent-dk);
  font-size: 15px;
}
ol.steps strong { display: block; }

/* ---------- Checklist ---------- */

ul.checklist { list-style: none; padding-left: 0; }
ul.checklist li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
}
ul.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  border: 1px solid var(--accent);
  border-radius: 2px;
}

/* ---------- FAQ accordion ---------- */

.faq { border-top: 1px solid var(--line); margin: 24px 0; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  padding: 14px 0;
  font-size: 17.5px;
  font-weight: 600;
  list-style: none;
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+";
  color: var(--accent-dk);
  font-weight: 400;
  font-size: 20px;
}
.faq details[open] summary::before { content: "\2212"; }
.faq details > *:not(summary) { margin-left: 24px; }

/* ---------- Related ---------- */

.related { margin: 46px 0 10px; }
.related h2 { margin-top: 0; }
.related ul { list-style: none; padding-left: 0; }
.related li { border-bottom: 1px solid var(--line); padding-bottom: 10px; }

/* ---------- Footer ---------- */

.site-foot {
  border-top: 2px solid var(--ink);
  background: var(--panel);
  margin-top: 56px;
  padding: 34px 0 44px;
  font-size: 16px;
}

.site-foot p { margin: 0 0 6px; max-width: 78ch; }
.site-foot .foot-site {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 10px;
}
.site-foot .foot-links { margin: 16px 0 14px; }
.site-foot .foot-tm,
.site-foot .foot-date { color: var(--muted); font-size: 15px; }
.site-foot .foot-tm { margin-top: 14px; }

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 34px; padding-top: 28px; }
  .sidebar { position: static; order: 2; }
  .cards li { border-right: 0; padding-right: 0; }
}

@media (max-width: 640px) {
  body { font-size: 16.5px; }
  .nav-toggle { display: inline-block; }
  .site-nav {
    display: none;
    width: 100%;
    padding-bottom: 8px;
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav li { border-top: 1px solid var(--line); }
  .site-nav a { padding: 10px 0; width: 100%; }
  .hero { padding: 30px 0 24px; }
}

@media print {
  .site-nav, .nav-toggle, .sidebar { display: none; }
}