:root {
  color-scheme: dark;
  --page: #121a16;
  --panel: #19231e;
  --panel-raised: #202d25;
  --line: #304038;
  --line-soft: #26342d;
  --text: #f0f2ec;
  --muted: #a0aaa0;
  --quiet: #738078;
  --accent: #c8f279;
  --accent-deep: #94bd4c;
  --error: #f28a70;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  background: var(--page);
  color: var(--text);
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(ellipse at 82% 5%, rgba(73, 101, 61, .14), transparent 34rem),
    var(--page);
  color: var(--text);
  line-height: 1.55;
}

button, textarea { font: inherit; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  z-index: 20;
  top: -80px;
  left: 16px;
  padding: 10px 14px;
  color: var(--page);
  background: var(--accent);
  border-radius: 6px;
}
.skip-link:focus { top: 16px; }

.site-header, main, .site-footer {
  width: min(1180px, calc(100% - 64px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  min-height: 86px;
  border-bottom: 1px solid rgba(151, 169, 154, .16);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 16px;
  font-weight: 760;
  letter-spacing: -.045em;
}
.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  color: var(--page);
  background: var(--accent);
  font: 800 20px/1 var(--mono);
  letter-spacing: -.12em;
}
.brand-mark span { color: #55752f; }
.brand-light { color: var(--muted); font-weight: 480; }

.site-nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
  margin-right: 52px;
  color: var(--muted);
  font-size: 13px;
}
.site-nav a { transition: color .15s ease; }
.site-nav a:hover, .site-nav .nav-active { color: var(--text); }
.header-note {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font: 11px var(--mono);
}
.status-dot, .live-indicator span {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(200, 242, 121, .5);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr);
  align-items: end;
  gap: 56px;
  padding: 64px 0 48px;
}
.eyebrow, .section-kicker, .card-index {
  margin: 0;
  color: var(--accent);
  font: 10px/1.4 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow-line { display: inline-block; width: 22px; height: 1px; background: var(--accent); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 {
  margin: 18px 0 0;
  font-size: clamp(48px, 6.2vw, 76px);
  font-weight: 570;
  letter-spacing: -.075em;
  line-height: .99;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-copy { padding-bottom: 3px; }
.hero-copy > p {
  max-width: 410px;
  margin-bottom: 24px;
  color: #c3cbc2;
  font-size: 15px;
  line-height: 1.7;
}
.trust-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 19px;
  color: var(--muted);
  font-size: 11px;
}
.trust-points span { white-space: nowrap; }
.trust-points b { margin-right: 5px; color: var(--quiet); font: 10px var(--mono); }

.workspace {
  display: grid;
  grid-template-columns: minmax(205px, .72fr) minmax(0, 2.28fr);
  gap: 16px;
  align-items: stretch;
  scroll-margin-top: 24px;
}
.settings-panel, .test-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(25, 35, 30, .9);
}
.settings-panel { padding: 19px 17px 16px; }
.panel-topline { display: flex; justify-content: space-between; align-items: center; }
.panel-topline .section-kicker { color: var(--muted); font-size: 9px; }
.live-indicator { display: inline-flex; align-items: center; gap: 6px; color: var(--accent); font: 9px var(--mono); }
.live-indicator span { width: 5px; height: 5px; }
.setting-group { min-width: 0; margin: 27px 0 0; padding: 0; border: 0; }
.setting-group legend { margin-bottom: 10px; color: #d7ddd5; font-size: 12px; font-weight: 620; }
.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 3px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: #131c17;
}
.segment {
  min-height: 34px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  transition: color .15s ease, background .15s ease;
}
.segment:hover { color: var(--text); }
.segment.is-selected { color: var(--text); background: #29372e; box-shadow: inset 0 0 0 1px #35473b; }
.choice-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.choice-button {
  min-height: 34px;
  padding: 0 4px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: #131c17;
  color: var(--muted);
  cursor: pointer;
  font: 11px var(--mono);
}
.choice-button:hover { border-color: #60745f; color: var(--text); }
.choice-button.is-selected { border-color: var(--accent-deep); color: var(--accent); background: rgba(200, 242, 121, .08); }
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 23px;
  padding-top: 17px;
  border-top: 1px solid var(--line-soft);
  cursor: pointer;
}
.toggle-row > span:first-child { display: grid; gap: 2px; }
.toggle-row strong { font-size: 12px; font-weight: 620; }
.toggle-row small { color: var(--quiet); font-size: 10px; }
.toggle-row input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.toggle {
  position: relative;
  flex: 0 0 34px;
  height: 20px;
  border: 1px solid #526157;
  border-radius: 99px;
  background: #26332b;
  transition: background .15s ease;
}
.toggle::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #a7b2a8;
  content: "";
  transition: transform .15s ease, background .15s ease;
}
.toggle-row input:checked + .toggle { border-color: var(--accent-deep); background: #354b2b; }
.toggle-row input:checked + .toggle::after { transform: translateX(14px); background: var(--accent); }
.toggle-row input:focus-visible + .toggle { outline: 2px solid var(--accent); outline-offset: 3px; }
.reset-button {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 38px;
  gap: 8px;
  margin-top: 22px;
  padding: 0;
  border: 0;
  border-top: 1px solid var(--line-soft);
  background: transparent;
  color: #dbe0d7;
  cursor: pointer;
  text-align: left;
  font-size: 12px;
}
.reset-button > span { color: var(--accent); font-size: 18px; }
kbd {
  padding: 3px 5px;
  border: 1px solid #3a4840;
  border-radius: 4px;
  color: var(--muted);
  background: #202a24;
  font: 9px var(--mono);
}
.reset-button kbd { margin-left: auto; }
.best-card {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
  padding: 12px 10px;
  border: 1px solid #344437;
  border-radius: 8px;
  background: rgba(200, 242, 121, .055);
}
.best-icon { align-self: flex-start; color: var(--accent); font-size: 17px; }
.best-card > div { display: grid; gap: 1px; }
.best-card > div > small { color: var(--muted); font: 9px var(--mono); letter-spacing: .08em; }
.best-card strong { font: 600 18px var(--mono); }
.best-card strong small { color: var(--muted); font: 9px var(--mono); }
.best-caption { margin-left: auto; color: var(--quiet); font-size: 9px; }

.test-panel { min-width: 0; padding: 22px 25px 19px; }
.test-panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.test-title { display: grid; gap: 4px; }
.test-title .section-kicker { color: var(--muted); font-size: 9px; }
.test-mode-caption { color: #e4e9df; font-size: 12px; }
.timer-block { display: grid; min-width: 66px; justify-items: end; }
.timer-label { color: var(--quiet); font: 9px var(--mono); letter-spacing: .08em; }
.timer-block strong { color: var(--accent); font: 500 28px/1.2 var(--mono); }
.timer-block strong span { margin-left: 2px; color: var(--muted); font-size: 13px; }
.progress-track { height: 3px; margin-top: 14px; overflow: hidden; border-radius: 9px; background: #2b3930; }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--accent); transition: width .15s linear; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 21px; padding: 0 0 18px; border-bottom: 1px solid var(--line-soft); }
.metric { display: grid; gap: 2px; padding-left: 18px; border-left: 1px solid var(--line-soft); }
.metric:first-child { padding-left: 0; border-left: 0; }
.metric-label { color: var(--quiet); font: 9px var(--mono); letter-spacing: .09em; }
.metric strong { color: #e6ebe2; font: 500 22px/1.25 var(--mono); }
.metric-primary strong { color: var(--accent); font-size: 29px; }
.metric strong small { margin-left: 2px; color: var(--muted); font: 12px var(--mono); }
.typing-frame {
  position: relative;
  min-height: 242px;
  max-height: 242px;
  margin-top: 18px;
  overflow: hidden;
  border: 1px solid #33443a;
  border-radius: 9px;
  background: #131d17;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.typing-frame:focus-within { border-color: #799746; box-shadow: 0 0 0 2px rgba(200, 242, 121, .08); }
.typing-prompt {
  position: absolute;
  inset: 0;
  overflow: hidden;
  padding: 20px 21px;
  color: #9aa99d;
  font: 17px/1.85 var(--mono);
  letter-spacing: .005em;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  user-select: none;
  pointer-events: none;
}
.char.correct { color: #e5ecdf; }
.char.error { color: #ffd0c5; background: rgba(242, 138, 112, .2); border-radius: 2px; }
.char.current { position: relative; color: var(--text); }
.char.current::before {
  position: absolute;
  top: 1px;
  bottom: 0;
  left: -1px;
  width: 2px;
  border-radius: 1px;
  background: var(--accent);
  content: "";
  animation: caretBlink 1.1s step-end infinite;
}
@keyframes caretBlink { 50% { opacity: 0; } }
.typing-input {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  resize: none;
  padding: 20px 21px;
  border: 0;
  outline: 0;
  color: transparent;
  background: transparent;
  caret-color: transparent;
  font: 17px/1.85 var(--mono);
  letter-spacing: .005em;
  overflow-wrap: anywhere;
}
.typing-input::selection { color: transparent; background: transparent; }
.start-cover {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  width: 100%;
  border: 0;
  color: var(--text);
  background: rgba(16, 25, 20, .24);
  cursor: text;
  text-align: left;
}
.start-cover > span:last-child { display: grid; gap: 4px; }
.start-cover strong { font-size: 13px; font-weight: 640; }
.start-cover small { color: #b3beb3; font-size: 11px; }
.start-icon { display: grid; width: 31px; height: 31px; place-items: center; border: 1px solid #53664f; border-radius: 8px; color: var(--accent); font: 16px var(--mono); }
.typing-frame.is-started .start-cover { display: none; }
.typing-instructions { display: flex; justify-content: space-between; gap: 12px; padding: 10px 1px 0; color: var(--quiet); font-size: 10px; }
.typing-instructions > span:first-child { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.typing-instructions kbd { padding: 2px 4px; font-size: 8px; }

.result-card {
  margin-top: 20px;
  padding: 18px;
  border: 1px solid #536c42;
  border-radius: 9px;
  background: linear-gradient(135deg, rgba(200, 242, 121, .09), rgba(25, 35, 30, .5));
}
.result-card[hidden] { display: none; }
.result-heading { display: flex; justify-content: space-between; align-items: center; }
.result-heading .eyebrow { color: var(--accent); font-size: 9px; }
.result-heading h2 { margin: 5px 0 0; font-size: 21px; letter-spacing: -.035em; }
.result-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; color: var(--page); background: var(--accent); }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 17px; padding: 14px 0; border-block: 1px solid var(--line); }
.result-stats > div { display: grid; gap: 4px; }
.result-stats > div > span { color: var(--muted); font-size: 10px; }
.result-stats strong { font: 500 21px var(--mono); }
.result-stats strong small { color: var(--muted); font: 11px var(--mono); }
.result-actions { display: flex; gap: 11px; margin-top: 13px; }
.button-primary, .button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 40px;
  padding: 0 15px;
  border: 1px solid var(--accent);
  border-radius: 7px;
  color: #172019;
  background: var(--accent);
  cursor: pointer;
  font-size: 12px;
  font-weight: 680;
  transition: background .15s ease, transform .15s ease;
}
.button-primary:hover, .button-secondary:hover { transform: translateY(-1px); background: #d8ff98; }
.button-quiet, .text-button {
  padding: 8px 2px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 11px;
}
.button-quiet:hover, .text-button:hover { color: var(--text); }
.history-panel { margin-top: 22px; padding-top: 17px; border-top: 1px solid var(--line-soft); }
.history-head { display: flex; align-items: end; justify-content: space-between; gap: 8px; }
.history-head .section-kicker { color: var(--quiet); font-size: 8px; }
.history-head h2 { margin: 3px 0 0; font-size: 14px; font-weight: 590; }
.text-button { padding: 3px 0; color: var(--quiet); font-size: 10px; }
.history-list { display: grid; gap: 6px; margin-top: 11px; }
.empty-history { margin: 0; color: var(--quiet); font-size: 11px; }
.history-item { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 12px; padding: 8px 9px; border: 1px solid var(--line-soft); border-radius: 6px; color: var(--muted); font-size: 10px; }
.history-item strong { color: var(--text); font: 12px var(--mono); }
.history-item .history-accuracy { color: var(--accent); font: 11px var(--mono); }
.history-item time { color: var(--quiet); font: 9px var(--mono); }

.ad-slot { max-width: 760px; min-height: 0; margin: 0 auto; }
.ad-slot[hidden] { display: none; }
.ad-slot:not([hidden]) { min-height: 100px; margin-block: 24px; }
.ad-slot .adsbygoogle { display: block; width: 100%; min-height: 90px; }

.explainer-section { padding: 100px 0 79px; border-bottom: 1px solid var(--line-soft); }
.section-heading { max-width: 610px; }
.section-heading h2, .practice-copy h2, .faq-intro h2 {
  margin: 17px 0 10px;
  font-size: clamp(30px, 4vw, 43px);
  font-weight: 560;
  letter-spacing: -.055em;
  line-height: 1.08;
}
.section-heading > p:last-child, .practice-copy > p:not(.eyebrow) { color: var(--muted); font-size: 14px; }
.explainer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 35px; }
.info-card { min-height: 215px; padding: 21px; border: 1px solid var(--line); border-radius: 10px; background: rgba(25, 35, 30, .68); }
.card-index { color: var(--quiet); font-size: 9px; }
.info-card h3 { margin: 24px 0 10px; font-size: 18px; font-weight: 550; letter-spacing: -.025em; }
.info-card p { color: var(--muted); font-size: 12px; line-height: 1.72; }
.formula { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-top: 15px; color: var(--muted); font: 10px var(--mono); }
.formula b { color: var(--quiet); font-weight: 400; }
.formula strong { color: var(--accent); }
.card-link { display: inline-flex; gap: 8px; align-items: center; margin-top: 7px; color: var(--accent); font-size: 11px; }
.card-link:hover { color: #e0ffad; }

.practice-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: center; padding: 82px 0; border-bottom: 1px solid var(--line-soft); }
.practice-copy { max-width: 450px; }
.practice-copy h2 { margin-bottom: 14px; }
.practice-copy > p:not(.eyebrow) { line-height: 1.75; }
.button-secondary { margin-top: 9px; color: var(--text); border-color: #4a5a4f; background: transparent; }
.button-secondary:hover { color: var(--page); border-color: var(--accent); background: var(--accent); }
.practice-steps { display: grid; gap: 0; }
.practice-steps > div { display: grid; grid-template-columns: 38px 1fr; column-gap: 13px; padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.practice-steps > div:first-child { border-top: 1px solid var(--line-soft); }
.practice-steps > div > span { grid-row: span 2; color: var(--accent); font: 10px var(--mono); }
.practice-steps p { margin: 0; font-size: 13px; }
.practice-steps small { margin-top: 3px; color: var(--quiet); font-size: 11px; }

.faq-section { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; padding: 84px 0 90px; }
.faq-intro h2 { font-size: 36px; }
.faq-list details { padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.faq-list details:first-child { border-top: 1px solid var(--line-soft); }
.faq-list summary { position: relative; padding-right: 35px; cursor: pointer; list-style: none; font-size: 13px; font-weight: 550; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; right: 2px; color: var(--accent); content: "+"; font: 18px var(--mono); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 640px; margin: 11px 30px 0 0; color: var(--muted); font-size: 12px; line-height: 1.75; }

.site-footer { display: flex; align-items: center; gap: 20px; min-height: 90px; border-top: 1px solid rgba(151, 169, 154, .16); }
.footer-brand { font-size: 13px; }
.footer-brand .brand-mark { width: 28px; height: 28px; border-radius: 8px; font-size: 17px; }
.site-footer > p { margin: 0; color: var(--quiet); font-size: 10px; }
.site-footer nav { display: flex; gap: 19px; margin-left: auto; color: var(--muted); font-size: 10px; }
.site-footer nav a:hover { color: var(--text); }

.article-page { max-width: 800px; min-height: 65vh; margin: 0 auto; padding: 65px 0 95px; }
.article-page .eyebrow { margin-bottom: 18px; }
.article-page h1 { max-width: 760px; margin-bottom: 20px; font-size: clamp(38px, 5vw, 57px); line-height: 1.05; letter-spacing: -.06em; }
.article-page .article-lede { max-width: 680px; margin-bottom: 36px; color: #c1cbc1; font-size: 17px; line-height: 1.7; }
.article-page h2 { margin: 38px 0 10px; font-size: 23px; font-weight: 570; letter-spacing: -.03em; }
.article-page h3 { margin: 23px 0 7px; font-size: 16px; font-weight: 600; }
.article-page p, .article-page li { color: var(--muted); font-size: 14px; line-height: 1.8; }
.article-page ul, .article-page ol { padding-left: 22px; }
.article-page li { padding-left: 4px; margin-bottom: 7px; }
.article-callout { margin: 27px 0; padding: 19px 21px; border: 1px solid #3b4d3d; border-left: 3px solid var(--accent); border-radius: 8px; background: rgba(200, 242, 121, .045); }
.article-callout p { margin: 0; }
.article-page a:not(.button-primary) { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-cta { margin-top: 27px; }
.updated { color: var(--quiet) !important; font-size: 11px !important; }
.not-found { width: min(680px, calc(100% - 40px)); margin: 15vh auto; }
.not-found h1 { margin: 18px 0 10px; font-size: clamp(38px, 7vw, 60px); letter-spacing: -.06em; }
.not-found > p:not(.eyebrow) { color: var(--muted); }
.not-found .button-primary { margin-top: 10px; }

@media (max-width: 900px) {
  .site-header, main, .site-footer { width: min(100% - 40px, 760px); }
  .hero { gap: 30px; }
  .workspace { grid-template-columns: 185px minmax(0, 1fr); gap: 11px; }
  .settings-panel { padding-inline: 13px; }
  .test-panel { padding-inline: 18px; }
  .practice-section { gap: 38px; }
  .faq-section { gap: 35px; }
}

@media (max-width: 680px) {
  .site-header, main, .site-footer { width: calc(100% - 32px); }
  .site-header { min-height: 70px; }
  .site-nav { gap: 17px; margin-right: 0; font-size: 11px; }
  .header-note { display: none; }
  .hero { grid-template-columns: 1fr; gap: 20px; padding: 45px 0 31px; }
  .hero h1 { font-size: clamp(47px, 12vw, 66px); }
  .hero-copy > p { margin-bottom: 15px; font-size: 13px; }
  .trust-points { gap: 8px 14px; font-size: 10px; }
  .workspace { grid-template-columns: 1fr; gap: 10px; }
  .settings-panel { padding: 15px 15px 13px; }
  .panel-topline { margin-bottom: 14px; }
  .setting-group { display: grid; grid-template-columns: 83px minmax(0, 1fr); align-items: center; gap: 9px; margin-top: 13px; }
  .setting-group legend { float: left; width: 83px; margin: 0; font-size: 11px; }
  .setting-group .segmented-control, .setting-group .choice-grid { min-width: 0; }
  .choice-grid { gap: 5px; }
  .choice-button { min-height: 32px; font-size: 10px; }
  .toggle-row { margin-top: 13px; padding-top: 11px; }
  .toggle-row strong { font-size: 11px; }
  .toggle-row small { font-size: 9px; }
  .reset-button { margin-top: 12px; min-height: 33px; }
  .best-card { display: none; }
  .test-panel { padding: 17px 14px 15px; }
  .test-panel-head { align-items: center; }
  .test-panel-head .section-kicker { font-size: 8px; }
  .test-mode-caption { font-size: 11px; }
  .timer-block { min-width: 56px; }
  .timer-block strong { font-size: 24px; }
  .metrics { margin-top: 16px; padding-bottom: 14px; }
  .metric { padding-left: 10px; }
  .metric-label { font-size: 8px; letter-spacing: .04em; }
  .metric strong { font-size: 17px; }
  .metric-primary strong { font-size: 23px; }
  .metric strong small { font-size: 10px; }
  .typing-frame { min-height: 220px; max-height: 220px; margin-top: 13px; }
  .typing-prompt, .typing-input { padding: 17px 14px; font-size: 14px; line-height: 1.85; }
  .typing-instructions { align-items: flex-start; font-size: 9px; }
  .typing-instructions > span:last-child { max-width: 180px; text-align: right; }
  .history-panel { margin-top: 17px; }
  .explainer-section { padding: 70px 0 58px; }
  .section-heading h2, .practice-copy h2 { font-size: 34px; }
  .explainer-grid { grid-template-columns: 1fr; gap: 9px; margin-top: 25px; }
  .info-card { min-height: 0; padding: 18px; }
  .info-card h3 { margin-top: 17px; }
  .practice-section { grid-template-columns: 1fr; gap: 30px; padding: 61px 0; }
  .faq-section { grid-template-columns: 1fr; gap: 22px; padding: 61px 0 65px; }
  .faq-intro h2 { margin-top: 13px; font-size: 31px; }
  .site-footer { flex-wrap: wrap; gap: 10px 14px; padding: 16px 0; }
  .site-footer > p { font-size: 9px; }
  .site-footer nav { width: 100%; gap: 17px; margin-left: 0; padding-top: 4px; }
  .article-page { min-height: 70vh; padding: 47px 0 65px; }
  .article-page .article-lede { font-size: 15px; }
}

@media (max-width: 390px) {
  .site-header, main, .site-footer { width: calc(100% - 24px); }
  .brand { gap: 8px; font-size: 14px; }
  .brand-mark { width: 30px; height: 30px; }
  .site-nav { gap: 12px; font-size: 10px; }
  .hero h1 { font-size: 46px; }
  .setting-group { grid-template-columns: 73px minmax(0, 1fr); gap: 7px; }
  .setting-group legend { width: 73px; font-size: 10px; }
  .choice-grid { gap: 3px; }
  .choice-button { padding-inline: 1px; font-size: 9px; }
  .metric { padding-left: 7px; }
  .typing-instructions { font-size: 8px; }
  .typing-instructions kbd { font-size: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}