:root {
  --paper: #f4eee2;
  --paper-2: #ebe3d1;
  --ink: #1c2638;
  --ink-2: #4a5263;
  --oxblood: #8c2f39;
  --navy: #14233a;
  --rule: rgba(28, 38, 56, 0.22);
  --serif: ui-serif, Charter, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: clamp(16px, 4vw, 48px);
  --wrap: 1180px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -.015em;
  margin: 0 0 .5em;
  color: var(--ink);
}
h1 { font-size: clamp(2.6rem, 6.6vw, 5.6rem); }
h2 { font-size: clamp(2rem, 4vw, 3.1rem); }
h3 { font-size: 1.35rem; line-height: 1.2; }

p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }

a {
  color: var(--ink);
  text-decoration-line: underline;
  text-decoration-color: var(--oxblood);
  text-decoration-thickness: 1px;
  text-underline-offset: .25em;
}
a:hover { color: var(--oxblood); }
strong { font-weight: 600; }

:focus-visible {
  outline: 2px solid var(--oxblood);
  outline-offset: 3px;
}
/* Oxblood on the navy band and ink footer is about 1.9:1; use paper there (13:1). */
.band :focus-visible,
.colophon :focus-visible { outline-color: var(--paper); }

[hidden] { display: none !important; }

.skip {
  position: absolute;
  left: 12px;
  top: -64px;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  z-index: 20;
}
.skip:focus { top: 12px; color: var(--paper); }

.wrap {
  width: min(100% - 2 * var(--gutter), var(--wrap));
  margin-inline: auto;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  margin: -1px;
  padding: 0;
  border: 0;
}

/* Masthead */
.masthead { border-bottom: 3px double var(--ink); }
.masthead-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px 32px;
  padding-block: 20px;
}
.wordmark {
  display: inline-flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--ink);
}
.wordmark:hover { color: var(--ink); }
.wordmark-name {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.1;
}
.wordmark-domain {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--ink-2);
}
.nav ul { display: flex; flex-wrap: wrap; gap: 8px 28px; list-style: none; }
.nav a {
  display: inline-block;
  padding: 4px 0;
  text-decoration: none;
  color: var(--ink);
  font-size: .95rem;
  background-image: linear-gradient(var(--oxblood), var(--oxblood));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size .35s ease, color .25s ease;
}
.nav a:hover,
.nav a[aria-current="page"] { background-size: 100% 1px; color: var(--ink); }
.nav a[aria-current="page"] { font-weight: 600; }

/* Buttons */
.button-row { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--oxblood); border-color: var(--oxblood); color: #fff; }
.btn-quiet {
  border-color: transparent;
  padding-inline: 8px;
  text-decoration: underline;
  text-decoration-color: var(--oxblood);
  text-underline-offset: .3em;
}
.btn-quiet:hover { background: transparent; color: var(--oxblood); }
.btn-light { border-color: var(--paper); color: var(--paper); }
.btn-light:hover { background: var(--paper); color: var(--navy); }

/* Hero */
.hero { padding: clamp(64px, 10vw, 144px) 0 clamp(56px, 8vw, 104px); }
.hero-grid { display: grid; gap: 48px; align-items: end; }
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.3fr .7fr; gap: 72px; }
}
.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--oxblood);
  margin-bottom: 28px;
}
.kicker::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--oxblood);
  flex: none;
}
.hero h1 em { font-style: italic; color: var(--oxblood); }
.hero-side {
  display: grid;
  gap: 28px;
  border-left: 1px solid var(--ink);
  padding-left: 28px;
}
.lede {
  font-size: clamp(1.1rem, 1.7vw, 1.28rem);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

/* Sections */
.section {
  padding: clamp(72px, 10vw, 128px) 0;
  border-top: 1px solid var(--ink);
}
.section-tint { background: var(--paper-2); }
.section-num {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 16px;
}
.section-lede {
  max-width: 40rem;
  font-size: 1.1rem;
  color: var(--ink-2);
  margin-top: 8px;
}

.principles { display: grid; margin-top: 48px; }
@media (min-width: 820px) {
  .principles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.principle { padding: 32px 0; border-top: 1px solid var(--ink); }
@media (min-width: 820px) {
  .principle { padding: 8px 32px 0; border-top: 0; }
  .principle:first-child { padding-left: 0; }
  .principle + .principle { border-left: 1px solid var(--rule); }
}
.principle .principle-no {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--oxblood);
  margin-bottom: 8px;
}
.principle p { color: var(--ink-2); }

/* Referral map */
.map-layout { display: grid; gap: 40px; margin-top: 48px; }
@media (min-width: 960px) {
  .map-layout { grid-template-columns: 320px minmax(0, 1fr); gap: 56px; align-items: start; }
}
.controls { display: grid; gap: 24px; }
.field { display: grid; }
label {
  display: block;
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 8px;
}
input[type="text"],
select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 0;
}
input::placeholder { color: var(--ink-2); opacity: 1; }
.field-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; }
.status { min-height: 1.6em; margin: 0; font-size: .95rem; color: var(--ink-2); overflow-wrap: anywhere; }
.status.is-error { color: var(--oxblood); }
.map-figure { margin: 0; background: var(--paper); border: 1px solid var(--ink); }
#map-canvas { display: block; width: 100%; height: 320px; }
.map-figure figcaption {
  padding: 12px 16px;
  font-size: .9rem;
  color: var(--ink-2);
  border-top: 1px solid var(--rule);
}
.log-wrap { margin-top: 64px; max-width: 44rem; }
.log-wrap h3 { margin-bottom: 16px; }
.log { list-style: none; counter-reset: entry; }
.log li {
  counter-increment: entry;
  display: grid;
  grid-template-columns: 3.2ch minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  overflow-wrap: anywhere;
}
.log li::before {
  content: counter(entry, decimal-leading-zero);
  font-family: var(--mono);
  font-size: .85rem;
  color: var(--oxblood);
  padding-top: 3px;
}
.log-empty { color: var(--ink-2); font-style: italic; }

/* Dark band */
.band {
  background: var(--navy);
  color: var(--paper);
  padding: clamp(64px, 9vw, 112px) 0;
  border-top: 1px solid var(--ink);
}
.band h2 { color: var(--paper); max-width: 24ch; margin: 0; }
.band-grid { display: grid; gap: 32px; align-items: center; }
@media (min-width: 820px) {
  .band-grid { grid-template-columns: 1fr auto; }
}

/* Inner pages */
.page-head {
  padding: clamp(64px, 9vw, 120px) 0 clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--ink);
}
.page-head h1 { font-size: clamp(2.4rem, 5.8vw, 4.8rem); max-width: 14ch; }
.page-head .lede { margin-top: 20px; max-width: 40rem; }

.guide-layout { display: grid; gap: 48px; }
@media (min-width: 920px) {
  .guide-layout { grid-template-columns: 220px minmax(0, 1fr); gap: 88px; }
}
.toc { border-top: 1px solid var(--ink); padding-top: 16px; }
@media (min-width: 920px) {
  .toc { position: sticky; top: 24px; align-self: start; }
}
.toc-title {
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 14px;
}
.toc ol { list-style: none; display: grid; gap: 12px; }
.toc a { text-decoration: none; color: var(--ink); }
.toc a:hover { color: var(--oxblood); }
.guide-section { padding-bottom: 64px; margin-bottom: 64px; border-bottom: 1px solid var(--rule); }
.guide-section:last-child { border-bottom: 0; margin-bottom: 0; }
.guide-section h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 20px; }
.guide-section > p { max-width: 42rem; color: var(--ink-2); font-size: 1.08rem; }
.guide-section h3 { margin-top: 40px; font-size: 1.25rem; }
.guide-next { margin-top: 24px; font-size: 1.05rem; }

.points { list-style: none; display: grid; gap: 18px; margin: 28px 0 0; max-width: 42rem; }
.points li { padding-left: 28px; position: relative; }
.points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 14px;
  height: 1px;
  background: var(--oxblood);
}
.points-wide { max-width: none; }
.checklist {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 24px 26px;
  background: var(--paper-2);
  border: 1px solid var(--ink);
  max-width: 42rem;
}
.checklist li { position: relative; padding-left: 32px; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--ink);
}

.about-grid { display: grid; gap: 56px; }
@media (min-width: 920px) {
  .about-grid { grid-template-columns: 1fr 1fr; gap: 88px; }
}
.about-block { border-top: 1px solid var(--ink); padding-top: 24px; }
.about-block h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.about-block > p { color: var(--ink-2); max-width: 36rem; }
.about-cta { margin-top: 40px; }

.options { display: grid; max-width: 56rem; border-top: 1px solid var(--ink); }
.option {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 24px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
}
.option:hover { color: var(--ink); }
.option-title {
  display: block;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.15;
}
.option-text { display: block; margin-top: 6px; color: var(--ink-2); max-width: 34rem; }
.option:hover .option-title { color: var(--oxblood); }
.option-arrow {
  font-family: var(--serif);
  font-size: 1.8rem;
  color: var(--oxblood);
  transition: transform .3s ease;
}
.option:hover .option-arrow { transform: translateX(6px); }
@media (prefers-reduced-motion: reduce) {
  .option-arrow, .nav a, .btn { transition: none; }
  .option:hover .option-arrow { transform: none; }
}

/* Footer */
.colophon { background: var(--ink); color: var(--paper); padding: 48px 0 56px; }
.colophon a { color: var(--paper); }
.colophon a:hover { color: var(--paper); }
.colophon-grid { display: grid; gap: 12px; }
@media (min-width: 760px) {
  .colophon-grid { grid-template-columns: 1fr auto; align-items: end; }
}
.colophon .wordmark-name { color: var(--paper); font-size: 1.4rem; }
.colophon p { margin: 0; color: #d9d2c2; }
.colophon .small { font-size: .85rem; }

/* Motion: only when the visitor has not asked for less */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .8s ease, transform .8s ease;
  }
  .js .reveal.is-in { opacity: 1; transform: none; }
}