:root {
  --bg: #10151c;
  --surface: #171e27;
  --surface-strong: #202937;
  --text: #d9e2ef;
  --muted: #8b9aad;
  --line: #2a3442;
  --accent: #ffb454;
  --accent-ink: #24190b;
  --good: #7bd88f;
  --bad: #ff7b72;
  --focus: #8ec8ff;
  --max: 1160px;
  color-scheme: dark;
}

html[data-theme="light"] {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --surface-strong: #f4f0e7;
  --text: #263241;
  --muted: #647488;
  --line: #dce1e7;
  --accent: #d88218;
  --accent-ink: #ffffff;
  --good: #218957;
  --bad: #d34c49;
  --focus: #1a73d9;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--bg); color: var(--text); font: 16px/1.6 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
button, textarea { font: inherit; }
button { cursor: pointer; }
::selection { background: var(--accent); color: var(--accent-ink); }
.container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(760px, 100%); }
.skip-link { position: absolute; z-index: 20; left: 1rem; top: -4rem; padding: .65rem .9rem; background: var(--accent); color: var(--accent-ink); border-radius: .5rem; font-weight: 700; text-decoration: none; }
.skip-link:focus { top: 1rem; }
.site-header { position: relative; z-index: 5; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 92%, transparent); }
.nav-wrap { min-height: 74px; display: flex; align-items: center; gap: 1.25rem; }
.brand { display: inline-flex; align-items: center; gap: .55rem; color: var(--text); font-weight: 780; letter-spacing: -.035em; text-decoration: none; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: var(--accent); color: var(--accent-ink); font-size: .82rem; font-weight: 900; letter-spacing: 0; }
.site-nav { display: flex; align-items: center; gap: .2rem; margin-left: auto; }
.site-nav a { color: var(--muted); border-radius: .5rem; padding: .45rem .65rem; font-size: .9rem; font-weight: 650; text-decoration: none; }
.site-nav a:hover, .site-nav a:focus-visible, .site-nav .is-active { color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.icon-button { display: grid; place-items: center; flex: 0 0 auto; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: .55rem; background: transparent; color: var(--muted); }
.icon-button:hover { border-color: var(--accent); color: var(--accent); }

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--text); line-height: 1.15; letter-spacing: -.04em; }
h1 { max-width: 850px; margin-bottom: 1rem; font-size: clamp(2.25rem, 6vw, 4.4rem); }
h2 { margin-bottom: 1rem; font-size: clamp(1.75rem, 4vw, 2.65rem); }
h3 { margin-bottom: .55rem; font-size: 1.08rem; }
p { color: var(--muted); }
.eyebrow { margin-bottom: .7rem; color: var(--accent); font-size: .74rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.hero-copy { max-width: 720px; font-size: clamp(1rem, 2vw, 1.15rem); }
.test-hero { padding: clamp(3.5rem, 8vw, 6.75rem) 0 4rem; background: radial-gradient(circle at 80% 0%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 27rem); }

.typing-app { margin-top: 2.7rem; padding: clamp(1rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: 1.2rem; background: var(--surface); box-shadow: 0 24px 60px rgb(0 0 0 / .12); }
.mode-row { display: flex; align-items: center; flex-wrap: wrap; gap: 1.4rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.mode-controls { display: inline-flex; align-items: center; gap: .1rem; }
.control-label { margin-right: .25rem; color: var(--muted); font-size: .78rem; }
.mode-button, .restart-button { border: 0; border-radius: .45rem; padding: .35rem .52rem; background: transparent; color: var(--muted); font-size: .83rem; font-weight: 700; }
.mode-button:hover, .restart-button:hover, .mode-button:focus-visible, .restart-button:focus-visible { color: var(--text); background: var(--surface-strong); outline: none; }
.mode-button.is-selected { color: var(--accent); }
.mode-controls[hidden] { display: none !important; }
.mode-switch { padding-right: .65rem; border-right: 1px solid var(--line); }
.mode-switch .mode-button { min-width: 48px; }
.mode-button[data-word-total]::after { margin-left: .28rem; color: var(--muted); content: attr(data-word-total) "w"; font-size: .65rem; font-weight: 700; }
.mode-button[data-word-total].is-selected::after { color: var(--accent); }
.restart-button { margin-left: auto; }
.app-context { display: flex; justify-content: space-between; gap: 1rem; padding-top: .85rem; color: var(--muted); font-size: .8rem; font-weight: 650; }
.live-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .9rem; padding: 1.2rem 0; }
.live-stats > div { min-width: 0; }
.stat-label { display: block; color: var(--muted); font-size: .71rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.live-stats strong { color: var(--accent); font-size: clamp(1.3rem, 3vw, 1.8rem); font-variant-numeric: tabular-nums; letter-spacing: -.04em; }
.live-stats small { margin-left: .15rem; color: var(--muted); }
.best-stat strong { color: var(--text); }
.word-stage { position: relative; min-height: 0; padding: 1.2rem 0 .4rem; overflow: visible; }
.word-stage::before { display: block; color: var(--muted); content: "Loading typing words..."; }
.word-stage.is-ready::before { display: none; }
.words { max-height: none; margin: 0; overflow: visible; color: color-mix(in srgb, var(--text) 44%, transparent); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: clamp(1.17rem, 3.1vw, 1.9rem); font-weight: 600; letter-spacing: .01em; line-height: 1.8; word-spacing: .13em; user-select: none; }
.words .word { position: relative; display: inline-block; white-space: pre; }
.words .char { position: relative; }
.words .char.correct { color: var(--good); }
.words .char.incorrect { color: var(--bad); text-decoration: underline; text-decoration-thickness: 2px; }
.words .char.current { color: var(--text); }
.words .char.current::before { position: absolute; top: .05em; bottom: .05em; left: -.055em; width: 2px; border-radius: 5px; background: var(--accent); content: ""; animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.typing-input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; resize: none; }
.typing-input:focus { outline: none; }
.word-stage:focus-within { border-color: var(--accent); }
.keyboard-hint { margin: .2rem 0 0; color: var(--muted); font-size: .78rem; text-align: center; }
kbd { padding: .1rem .32rem; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: .25rem; color: var(--text); font-family: inherit; font-size: .75rem; }
.result-panel { margin-top: 1.2rem; padding: 1.4rem; border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line)); border-radius: 1rem; background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.result-heading { display: flex; align-items: center; gap: .85rem; }
.result-heading .eyebrow { margin-bottom: .2rem; }
.result-heading h2 { margin-bottom: 0; font-size: 1.4rem; }
.result-subtitle { margin: .25rem 0 0; font-size: .88rem; }
.result-monkey { font-size: 2rem; }
.result-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .7rem; margin: 1.2rem 0; }
.result-grid div { padding: .8rem; border-radius: .65rem; background: color-mix(in srgb, var(--surface) 70%, transparent); }
.result-grid span { display: block; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .07em; }
.result-grid strong { display: block; margin-top: .15rem; color: var(--text); font-size: 1.4rem; font-variant-numeric: tabular-nums; }
.result-actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.result-grid-three { grid-template-columns: repeat(3, 1fr); }
.primary-button, .secondary-button { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; border-radius: .55rem; padding: .55rem 1rem; font-weight: 750; text-decoration: none; }
.primary-button { border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); }
.primary-button:hover { filter: brightness(1.06); }
.secondary-button { border: 1px solid var(--line); color: var(--text); }
.secondary-button:hover { border-color: var(--accent); color: var(--accent); }

.section { padding: clamp(3.75rem, 8vw, 6.25rem) 0; }
.section-tight { padding: clamp(2.25rem, 5vw, 3.75rem) 0; }
.section-muted { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.two-column { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .8fr); gap: clamp(2rem, 8vw, 6rem); align-items: center; }
.feature-list { display: grid; gap: 1rem; }
.feature-list article { display: flex; gap: 1rem; padding: 1rem; border: 1px solid var(--line); border-radius: .8rem; background: color-mix(in srgb, var(--bg) 40%, transparent); }
.feature-list > article > span { display: grid; place-items: center; flex: 0 0 auto; width: 35px; height: 35px; border-radius: .6rem; background: color-mix(in srgb, var(--accent) 13%, transparent); color: var(--accent); }
.feature-list h3, .feature-list p { margin: 0; }
.feature-list p { font-size: .9rem; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.7rem; }
.section-heading .eyebrow { margin-bottom: .45rem; }
.steps-grid, .card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.steps-grid article, .content-card { padding: 1.35rem; border: 1px solid var(--line); border-radius: .9rem; background: var(--surface); }
.step-number { color: var(--accent); font-size: .8rem; font-weight: 800; letter-spacing: .1em; }
.steps-grid p, .content-card p { margin-bottom: 0; font-size: .93rem; }
.content-card { display: block; color: inherit; text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
.content-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.card-icon { display: grid; place-items: center; width: 37px; height: 37px; margin-bottom: 1rem; border-radius: .65rem; background: color-mix(in srgb, var(--accent) 13%, transparent); color: var(--accent); }
.card-link { display: inline-block; margin-top: 1rem; color: var(--accent); font-size: .9rem; font-weight: 750; }
.faq-section details { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.faq-section summary { color: var(--text); cursor: pointer; font-weight: 720; }
.faq-section details p { margin: .7rem 0 0; }
.faq-section details a { color: var(--accent); }
.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); }
.footer-wrap { display: flex; justify-content: space-between; gap: 2rem; }
.footer-brand { margin-bottom: .4rem; }
.site-footer p { margin-bottom: 0; font-size: .85rem; }
.site-footer nav { display: flex; flex-wrap: wrap; align-content: start; justify-content: flex-end; gap: .5rem 1.1rem; }
.site-footer nav a { color: var(--muted); font-size: .85rem; text-decoration: none; }
.site-footer nav a[href^="mailto:"] { overflow-wrap: anywhere; }
.site-footer nav a:hover { color: var(--accent); }

.content-hero { padding: clamp(3.4rem, 8vw, 6rem) 0 3.2rem; background: radial-gradient(circle at 80% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 27rem); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.3rem; color: var(--muted); font-size: .85rem; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent); }
.content-hero h1 { max-width: 830px; }
.content-hero .lead { max-width: 720px; font-size: 1.1rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: clamp(2rem, 7vw, 5rem); }
.article-content { max-width: 750px; }
.article-content h2 { margin-top: 2.5rem; font-size: 1.85rem; }
.article-content h3 { margin-top: 1.6rem; }
.article-content p, .article-content li { color: var(--muted); }
.article-content a { color: var(--accent); font-weight: 700; }
.article-content a.primary-button, .callout a.primary-button { color: var(--accent-ink); }
.article-content a.secondary-button, .callout a.secondary-button { color: var(--text); }
.article-content ul, .article-content ol { padding-left: 1.3rem; }
.article-content li + li { margin-top: .55rem; }
.article-aside { position: sticky; top: 1rem; align-self: start; padding: 1rem; border: 1px solid var(--line); border-radius: .8rem; background: var(--surface); }
.article-aside h2 { margin-bottom: .55rem; font-size: 1rem; }
.article-aside a { display: block; padding: .35rem 0; color: var(--muted); font-size: .87rem; text-decoration: none; }
.article-aside a:hover { color: var(--accent); }
.callout { margin: 2rem 0; padding: 1.3rem; border: 1px solid color-mix(in srgb, var(--accent) 43%, var(--line)); border-radius: .9rem; background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.callout p { margin-bottom: 1rem; }
.simple-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.simple-grid > div { padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--surface); }
.simple-grid strong { color: var(--accent); }
.lesson-map { display: grid; grid-template-columns: repeat(3, 1fr); gap: .9rem; margin: 1.5rem 0; }
.lesson-map article { padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--surface); }
.lesson-map span { color: var(--accent); font-size: .8rem; font-weight: 800; }
.lesson-map p { margin-bottom: 0; font-size: .9rem; }
.race-panel { max-width: 800px; margin: 0 auto; }
.race-panel .typing-app { margin-top: 0; }
.race-copy { max-width: 720px; }
.practice-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.7rem; }
.practice-card { padding: 1.2rem; border: 1px solid var(--line); border-radius: .8rem; background: var(--surface); }
.practice-card h3 { margin-bottom: .4rem; }
.practice-card p { margin-bottom: .8rem; font-size: .9rem; }
.practice-card button { border: 1px solid var(--line); border-radius: .5rem; padding: .45rem .7rem; background: transparent; color: var(--text); font-size: .85rem; font-weight: 700; }
.practice-card button:hover, .practice-card button.is-selected { border-color: var(--accent); color: var(--accent); }
.practice-card .eyebrow { margin-bottom: .35rem; }
.mistake-box { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin: 1.1rem 0; padding: 1rem; border: 1px solid color-mix(in srgb, var(--bad) 45%, var(--line)); border-radius: .75rem; background: color-mix(in srgb, var(--bad) 6%, var(--surface)); }
.mistake-box[hidden] { display: none; }
.mistake-box .eyebrow { margin-bottom: .45rem; color: var(--bad); }
.mistake-list { display: flex; flex-wrap: wrap; gap: .4rem; }
.mistake-chip { padding: .2rem .48rem; border-radius: .35rem; background: var(--surface-strong); color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: .8rem; }
.race-command { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.2rem 0 .9rem; }
.race-command .eyebrow { margin-bottom: .2rem; }
.race-command strong { color: var(--text); }
.race-start { min-width: 130px; }
.race-track-wrap { padding: .9rem; border: 1px solid var(--line); border-radius: .75rem; background: color-mix(in srgb, var(--bg) 35%, transparent); }
.race-track-labels { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: .7rem; margin-bottom: .55rem; color: var(--muted); font-size: .75rem; font-weight: 700; }
.race-track-labels span:last-child { text-align: right; }
.race-track-labels strong { color: var(--accent); font-variant-numeric: tabular-nums; }
.race-track { position: relative; height: 18px; overflow: hidden; border-radius: 99px; background: var(--surface-strong); }
.race-progress { position: absolute; left: 0; width: 0; transition: width .1s linear; }
.race-progress-user { top: 0; height: 9px; background: var(--accent); }
.race-progress-ghost { bottom: 0; height: 7px; background: color-mix(in srgb, var(--focus) 72%, transparent); }
.race-word-stage { min-height: 180px; }
.race-countdown { position: absolute; z-index: 4; inset: 0; display: grid; place-items: center; border-radius: .8rem; background: color-mix(in srgb, var(--surface) 88%, transparent); color: var(--accent); font-size: clamp(4rem, 14vw, 8rem); font-weight: 900; line-height: 1; pointer-events: none; }
.race-countdown[hidden] { display: none; }
.course-progress { display: inline-flex; margin-top: .7rem; padding: .35rem .7rem; border: 1px solid var(--line); border-radius: 99px; color: var(--accent); font-size: .82rem; font-weight: 750; }
.lesson-curriculum { grid-template-columns: repeat(4, 1fr); }
.lesson-card { padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--surface); color: inherit; text-align: left; }
.lesson-card:hover, .lesson-card.is-selected { border-color: var(--accent); }
.lesson-card.is-selected { box-shadow: inset 0 0 0 1px var(--accent); }
.lesson-card.is-complete { background: color-mix(in srgb, var(--good) 6%, var(--surface)); }
.lesson-card > span { color: var(--accent); font-size: .75rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.lesson-card h3 { margin: .55rem 0 .35rem; }
.lesson-card p { margin-bottom: .7rem; font-size: .85rem; }
.lesson-status { color: var(--muted); font-size: .75rem; }
.lesson-card.is-complete .lesson-status { color: var(--good); }
.lesson-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, .45fr); gap: 2rem; align-items: center; padding-bottom: 1.2rem; }
.lesson-intro h2 { margin-bottom: .55rem; }
.lesson-intro p { margin-bottom: 0; }
.lesson-keys { padding: 1rem; border: 1px solid var(--line); border-radius: .7rem; background: var(--surface-strong); }
.lesson-keys span { display: block; margin-bottom: .35rem; color: var(--muted); font-size: .7rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.lesson-keys strong { color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; letter-spacing: .08em; }
.lesson-toolbar { justify-content: space-between; }
.lesson-toolbar .app-context { padding: 0; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.guide-grid .content-card { min-height: 100%; }

@media (max-width: 850px) {
  .site-nav { gap: 0; overflow-x: auto; }
  .site-nav a { white-space: nowrap; }
  .two-column, .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; order: -1; }
  .steps-grid, .card-grid, .practice-cards, .simple-grid, .lesson-map, .lesson-curriculum { grid-template-columns: 1fr 1fr; }
  .lesson-intro { grid-template-columns: 1fr; gap: 1rem; }
}
@media (max-width: 600px) {
  .container { width: min(100% - 28px, var(--max)); }
  .nav-wrap { min-height: 64px; gap: .7rem; }
  .brand { font-size: .9rem; }
  .brand-mark { width: 25px; height: 25px; }
  .site-nav { display: none; }
  .icon-button { margin-left: auto; }
  .test-hero { padding-top: 3rem; }
  .typing-app { margin-inline: -2px; border-radius: .9rem; }
  .mode-row { gap: .6rem; }
  .restart-button { margin-left: 0; }
  .live-stats { grid-template-columns: 1fr 1fr; }
  .best-stat { display: none; }
  .word-stage { min-height: 0; }
  .words { max-height: none; font-size: 1.15rem; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid, .card-grid, .practice-cards, .simple-grid, .lesson-map, .lesson-curriculum { grid-template-columns: 1fr; }
  .app-context, .race-command, .mistake-box { align-items: flex-start; flex-direction: column; }
  .result-grid-three { grid-template-columns: 1fr; }
  .footer-wrap { display: block; }
  .site-footer nav { justify-content: flex-start; margin-top: 1.2rem; }
  .article-content h2 { font-size: 1.55rem; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; } }