/* The original What's That Tax? illustrations, colors, outlines and paper cards. */
:root {
  --ink: #121212;
  --blue: #245b86;
  --sky: #399be6;
  --navy: #1b3c65;
  --cream: #ffefcd;
  --yellow: #ffd65a;
  --muted: #42505e;
  --paper-shadow: 7px 7px 0 var(--ink);
}

html { scroll-padding-top: 110px; }
body {
  background: var(--sky);
  color: var(--ink);
  font-family: "Trebuchet MS", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
}
img { max-width: 100%; height: auto; }
a { text-underline-offset: 3px; }
a, button, input, select, summary { -webkit-tap-highlight-color: #ffd65a66; }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 5px;
}
[hidden] { display: none !important; }
header {
  background: #fff;
  backdrop-filter: none;
  border-bottom: 3px solid var(--ink);
}
.nav { max-width: 1200px; padding-top: 16px; padding-bottom: 16px; }
.brand {
  color: var(--ink);
  font-family: "Arial Rounded MT Bold", "Trebuchet MS", ui-rounded, system-ui, sans-serif;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -.8px;
  white-space: nowrap;
}
.brand span {
  background: var(--yellow);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 5px;
  box-shadow: 3px 3px 0 var(--ink);
  margin-right: 12px;
}
nav a { font-size: 14px; font-weight: 800; }
nav a:hover { text-decoration: underline; text-decoration-thickness: 2px; }
.wrap { max-width: 1180px; }
h1, h2, h3 {
  font-family: "Arial Rounded MT Bold", "Trebuchet MS", ui-rounded, system-ui, sans-serif;
  font-weight: 900;
  color: var(--ink);
}
h1 { letter-spacing: -2px; }
h1 em { color: var(--ink); }
h2 { letter-spacing: -1.1px; }
h3 { letter-spacing: -.3px; }
.eyebrow { color: var(--blue); letter-spacing: 1.5px; }
.intro { color: var(--muted); }
.small { color: var(--muted); }
.btn, .quiz .btn, .quiz button.btn {
  background: var(--yellow);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 5px;
  box-shadow: 4px 4px 0 var(--ink);
  font-weight: 850;
  line-height: 1.4;
  padding: 13px 22px;
  text-align: center;
}
.btn:hover, .quiz .btn:hover, .quiz button.btn:hover {
  background: #ffe48c;
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}
.btn:active, .quiz .btn:active { box-shadow: 1px 1px 0 var(--ink); }
.btn.secondary, .quiz .btn.secondary {
  background: #fff;
  color: var(--ink);
  border: 2px solid var(--ink);
}
.btn.secondary:hover, .quiz .btn.secondary:hover { background: #e3f2ff; }
button:disabled { cursor: default; }
.pill {
  background: #e3f2ff;
  color: #213f5b;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  font-weight: 750;
  line-height: 1.5;
}
.original-masthead {
  background: var(--sky);
  padding: 12px 24px 6px;
}
.original-masthead img {
  display: block;
  width: min(100%, 960px);
  margin: 0 auto;
}
.home-page main { padding-top: 16px; }
.home-intro {
  background: #fff;
  border: 2px solid var(--ink);
  border-left: 8px solid var(--yellow);
  border-radius: 5px;
  box-shadow: var(--paper-shadow);
  max-width: none;
  padding: 26px 32px;
  margin: 0 0 28px;
}
.home-intro h1, .home-intro h2 {
  font-size: clamp(27px, 3.7vw, 42px);
  line-height: 1.15;
  letter-spacing: -1px;
  margin: 0 0 12px;
}
.home-intro p { max-width: 850px; margin: 0; }
.home-intro .eyebrow { margin-bottom: 9px; }
.topics { gap: 28px; padding-top: 0; padding-bottom: 35px; }
.topic-card, .card, .demo, .resource {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 5px;
  box-shadow: var(--paper-shadow);
}
.topic-card {
  position: relative;
  overflow: hidden;
  padding: 30px;
  border-top: 7px solid var(--yellow);
}
.topic-card:hover { border-color: var(--ink); background: #fffdf3; }
.topic-card h2 { font-size: 36px; margin-top: 10px; }
.topic-card p { color: var(--muted); margin-top: 0; }
.topic-card .pill { margin-bottom: 10px; }
.topic-card .btn { margin-top: 12px; }
.topic-vat { background: #fff; border-top-color: var(--navy); }
.topic-art {
  display: block;
  width: calc(100% + 60px);
  max-width: none;
  margin: -30px -30px 22px;
  object-fit: contain;
  border-bottom: 2px solid var(--ink);
  background: var(--cream);
}
.topic-banner {
  width: min(100%, 720px);
  margin: 30px auto 0;
}
.topic-banner img {
  display: block;
  width: 100%;
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: var(--paper-shadow);
}
.topic-title {
  max-width: none;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 5px;
  box-shadow: var(--paper-shadow);
  padding: 30px 36px 36px;
  margin: 32px 0;
}
.topic-title h1 { font-size: clamp(34px, 5.2vw, 56px); line-height: 1.12; margin: 14px 0 20px; }
.topic-title .intro { max-width: 760px; }
.topic-title .page-back { margin-bottom: 12px; }
.topic-page .topic-banner {
  float: right;
  width: 35%;
  max-width: 460px;
  margin: 32px 0 28px 3%;
}
.topic-page .topic-title { width: 62%; }
.topic-page .course-overview { clear: both; }
.page-back { color: var(--ink); font-weight: 750; }
.topic-title .location-picker {
  background: var(--cream);
  margin-bottom: 24px;
  box-shadow: 4px 4px 0 var(--ink);
}
.course-top { gap: 10px; }
.course-content, .course-map, .location-picker {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 5px;
  box-shadow: var(--paper-shadow);
}
.course-grid { gap: 28px; padding-bottom: 60px; }
.course-content {
  padding: clamp(24px, 3.6vw, 42px);
  min-width: 0;
}
.course-content h2 { font-size: clamp(29px, 3.8vw, 42px); line-height: 1.15; }
.course-content h3 { font-size: 23px; }
.course-content p { color: var(--muted); }
.course-content a:not(.btn), .feedback a { color: #184c77; }
.course-content > .eyebrow { color: var(--blue); }
.course-map { padding: 22px; }
.course-map > b {
  display: block;
  font-size: 18px;
  font-weight: 900;
  line-height: 1.4;
}
.course-map small { color: var(--muted); }
.course-map .quiz-link { border-radius: 3px; color: var(--ink); }
.course-map .quiz-link:hover { background: #e3f2ff; }
.course-map .quiz-link[aria-current=page] {
  background: #fff0af;
  box-shadow: inset 4px 0 0 var(--ink);
}
.course-overview { padding-bottom: 50px; }
.course-overview .course-map { border-top: 7px solid var(--yellow); padding: 28px; }
.course-overview .course-map ol { gap: 18px; margin-top: 22px; }
.course-overview .quiz-link {
  background: #e3f2ff;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 4px;
  box-shadow: 3px 3px 0 var(--ink);
  font-size: 18px;
  line-height: 1.4;
  padding: 20px;
}
.course-overview .quiz-link:hover { background: #fff0af; border-color: var(--ink); }
.course-overview .quiz-link small { margin-top: 9px; }
.progress-track {
  height: 12px;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  background: #eef4fa;
}
.progress-track span { background: var(--yellow); border-right: 1px solid var(--ink); }
.reset { color: #394958; font-weight: 700; line-height: 1.5; padding: 5px 0; }
.location-picker { padding: 24px; }
.location-field label { font-size: 15px; color: var(--ink); font-weight: 850; }
.location-field select {
  background: #fff;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 4px;
  min-height: 49px;
}
.quiz-page { padding-top: 26px; }
.quiz-page .location-picker { box-shadow: 4px 4px 0 var(--ink); margin-bottom: 28px; }
.quiz-page .course-grid { grid-template-columns: minmax(0, 1fr) 280px; }
.quiz-page .course-content { border-top: 7px solid var(--yellow); }
.quiz-page .course-content > h2 { margin-bottom: 22px; }
.quiz-page .quiz, .course-content .quiz {
  background: #e9f4ff;
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 24px;
}
.question { min-width: 0; }
.question legend { color: var(--ink); font-size: 20px; line-height: 1.5; font-weight: 850; margin-bottom: 12px; }
.choice {
  color: var(--ink);
  background: #fff;
  border: 2px solid #718394;
  border-radius: 4px;
  padding: 14px;
  margin: 10px 0;
  align-items: baseline;
  line-height: 1.55;
}
.choice input { accent-color: var(--ink); width: 17px; height: 17px; margin: 2px 0 0; }
.choice:hover { background: #fff9df; border-color: var(--ink); }
.choice:has(input:checked), .quiz .choice:has(input:checked) {
  background: #fff0af;
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}
.choice:has(input:focus-visible) { outline: 3px solid var(--ink); outline-offset: 3px; }
.choice input:focus-visible { outline: none; }
.choice:has(input:disabled):hover { background: #fff; border-color: #718394; }
.choice:has(input:checked:disabled):hover { background: #fff0af; border-color: var(--ink); }
.feedback {
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 18px;
  color: var(--ink);
}
.feedback > strong { font-size: 19px; }
.feedback p { margin: 10px 0; color: #283b4b; }
.feedback p:last-child { margin-bottom: 0; }
.answer-correct { background: #eff9ed; border-left: 7px solid #28603c; }
.answer-incorrect { background: #fff1e9; border-left: 7px solid #9d3626; }
.result {
  background: #fff4bf;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 24px;
}
.result > strong { font-size: 22px; }
.example, .location-summary {
  background: #e3f2ff;
  border-left: 5px solid var(--navy);
  border-radius: 3px;
  color: #263f60;
}
.ribbon { border-color: var(--ink); background: var(--yellow); color: var(--ink); }
.blue-section { background: var(--navy); }
.blue-section h2, .blue-section h3 { color: #fff; }
.glossary { background: #fff9df; }
.hero-art { background: #cde8ff; border-radius: 6px; }
.receipt { border-radius: 4px; box-shadow: 9px 9px 0 var(--ink); }
.sticker { border-radius: 4px; }
.card .icon { border: 2px solid var(--ink); border-radius: 4px; }
.resource { box-shadow: 4px 4px 0 var(--ink); }
footer {
  background: #fff;
  border-top: 3px solid var(--ink);
  padding-top: 30px;
  padding-bottom: 30px;
  margin-top: 28px;
}
.foot { align-items: flex-start; }
.foot p { color: #42505e; }
.foot > a { font-size: 14px; font-weight: 800; }
.home-page main > .small {
  display: inline-block;
  background: #fff;
  color: var(--ink);
  padding: 9px 14px;
  border: 2px solid var(--ink);
  border-radius: 3px;
  margin-bottom: 24px;
}
.skip:focus { border: 2px solid var(--ink); color: var(--ink); }

@media (max-width: 850px) {
  .quiz-page .course-grid { display: flex; flex-direction: column; }
  .course-map { position: static; }
  .original-masthead { padding-left: 12px; padding-right: 12px; }
  .topic-title { padding: 26px; }
  .topic-page .topic-banner {
    float: none;
    width: min(100%, 480px);
    max-width: 480px;
    margin: 26px auto 0;
  }
  .topic-page .topic-title { width: 100%; }
}
@media (max-width: 650px) {
  html { scroll-padding-top: 150px; }
  .nav { flex-wrap: wrap; gap: 13px; padding: 14px 20px; }
  .nav .brand { font-size: 21px; }
  .nav nav { width: 100%; gap: 23px; justify-content: flex-start; padding-left: 2px; }
  .nav nav a { font-size: 13px; }
  .wrap { padding-left: 18px; padding-right: 24px; }
  .home-page main { padding-top: 12px; }
  .home-intro { padding: 22px; margin-bottom: 24px; }
  .topics { grid-template-columns: 1fr; gap: 26px; }
  .topic-card { padding: 24px; }
  .topic-art { width: calc(100% + 48px); margin: -24px -24px 20px; }
  .topic-card h2 { font-size: 32px; }
  .topic-banner { margin-top: 24px; }
  .topic-title { padding: 23px; margin-top: 24px; }
  .topic-title h1 { font-size: 35px; letter-spacing: -1px; }
  .course-overview .course-map { padding: 22px; }
  .course-overview .course-map ol { grid-template-columns: 1fr; }
  .location-picker, .quiz-page .location-picker { padding: 18px; }
  .location-controls, .quiz-page .location-controls { flex-direction: column; align-items: stretch; gap: 14px; }
  .location-field, .quiz-page .location-field { display: block; max-width: none; }
  .quiz-page .location-field label { margin-bottom: 7px; }
  .location-controls .btn { width: 100%; }
  .quiz-page .course-content { padding: 22px; }
  .quiz-page .course-content > h2 { font-size: 30px; }
  .quiz-page .quiz, .course-content .quiz { padding: 17px; }
  .question legend { font-size: 18px; }
  .quiz-page .choice { padding: 12px; }
  .course-actions { align-items: stretch; gap: 16px; }
  .course-actions .btn { max-width: 100%; }
  .foot { display: block; }
}
@media (max-width: 380px) {
  body { font-size: 16px; }
  .nav .brand { font-size: 20px; }
  .topic-title, .quiz-page .course-content { padding: 18px; }
  .topic-title h1 { font-size: 31px; }
  .quiz-page .quiz, .course-content .quiz { padding: 13px; }
  .quiz-page .choice { gap: 9px; padding: 10px; }
  .btn, .quiz .btn { padding-left: 17px; padding-right: 17px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bar div { transition: none; }
}