:root {
  color-scheme: light dark;
  --paper: #f2f1e8;
  --paper-raised: #faf9f2;
  --panel: #e5e5d8;
  --ink: #151a15;
  --muted: #626a60;
  --line: #afb4a8;
  --line-strong: #70786e;
  --signal: #a8ca45;
  --signal-ink: #263207;
  --shadow: rgba(36, 44, 32, 0.2);
  --frame: min(1280px, calc(100vw - 64px));
  --display: "Arial Narrow", "Avenir Next Condensed", "Roboto Condensed", "Helvetica Neue", sans-serif;
  --body: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-family: var(--body);
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #111510;
    --paper-raised: #171c16;
    --panel: #1d231b;
    --ink: #eeeee5;
    --muted: #a7afa2;
    --line: #3a4337;
    --line-strong: #77816f;
    --signal: #b8da55;
    --signal-ink: #1d2805;
    --shadow: rgba(0, 0, 0, 0.46);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--paper);
  background-image:
    linear-gradient(color-mix(in srgb, var(--line) 16%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--line) 16%, transparent) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  content: "";
  pointer-events: none;
}

::selection {
  background: var(--signal);
  color: var(--signal-ink);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

button,
code,
pre {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 4px;
}

.frame {
  width: var(--frame);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--signal);
  color: var(--signal-ink);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 800;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(16px);
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-grid {
  width: 30px;
  height: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}

.brand-grid i {
  display: block;
  background: var(--ink);
}

.brand-grid i:last-child {
  background: var(--signal);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.nav-links a:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.challenge {
  display: none;
  grid-template-columns: minmax(260px, 0.8fr) minmax(420px, 1.2fr);
  align-items: end;
  gap: clamp(30px, 7vw, 96px);
  margin-top: 20px;
  padding: 20px 22px;
  border: 1px solid color-mix(in srgb, var(--signal) 75%, var(--line));
  background: color-mix(in srgb, var(--signal) 15%, var(--paper-raised));
  box-shadow: 8px 8px 0 color-mix(in srgb, var(--signal) 27%, transparent);
}

.has-shared-puzzle .challenge {
  display: grid;
}

.challenge h2 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 3.2vw, 3.5rem);
}

.challenge p:last-child {
  margin: 5px 0 0;
  color: var(--muted);
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 24px;
  height: 2px;
  display: inline-block;
  margin-right: 10px;
  background: var(--signal);
  content: "";
  vertical-align: 0.22em;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-stretch: condensed;
}

.command-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}

.command-box > code {
  min-width: 0;
  padding: 17px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.74rem;
  white-space: nowrap;
}

.copy-control {
  min-width: 132px;
  padding: 0 18px;
  border: 0;
  border-left: 1px solid var(--line-strong);
  background: var(--signal);
  color: var(--signal-ink);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 900;
  transition: filter 180ms ease, transform 180ms ease;
}

.copy-control:hover {
  filter: brightness(0.94);
}

.copy-control:active {
  transform: translateY(1px);
}

.hero {
  min-height: calc(100dvh - 68px);
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(480px, 1.12fr);
  align-items: center;
  gap: clamp(48px, 7vw, 112px);
  padding-block: clamp(62px, 7.5vw, 104px);
}

.has-shared-puzzle .hero {
  min-height: auto;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 650px;
}

h1 {
  margin: 20px 0 0;
  font-size: clamp(4.2rem, 7vw, 7.5rem);
  font-weight: 850;
  letter-spacing: -0.075em;
  line-height: 0.79;
  text-transform: uppercase;
}

h1 span {
  display: block;
}

h1 span:last-child {
  margin-left: clamp(22px, 5vw, 76px);
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink);
}

.lede {
  max-width: 52ch;
  margin: 32px 0 0;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.35vw, 1.2rem);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 32px;
}

.primary-action {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  padding: 0 20px;
  background: var(--signal);
  color: var(--signal-ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 900;
  text-decoration: none;
  box-shadow: 6px 6px 0 color-mix(in srgb, var(--signal) 24%, var(--shadow));
  transition: box-shadow 180ms ease, transform 180ms ease;
}

.primary-action:hover {
  box-shadow: 3px 3px 0 color-mix(in srgb, var(--signal) 24%, var(--shadow));
  transform: translate(3px, 3px);
}

.primary-action:active {
  box-shadow: none;
  transform: translate(6px, 6px);
}

.text-action {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.text-action:hover {
  color: var(--ink);
}

.feature-line {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 50px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
  list-style: none;
}

.feature-line li::before {
  margin-right: 8px;
  color: var(--signal);
  content: "#";
  font-weight: 900;
}

.hero-stage {
  position: relative;
  min-width: 0;
  padding: 64px 0 30px 28px;
}

.hero-stage::before {
  position: absolute;
  top: 14px;
  right: -6vw;
  bottom: -14px;
  left: 12%;
  z-index: -1;
  border: 1px solid var(--line);
  background: var(--panel);
  content: "";
}

.tile-word {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(42px, 64px));
  gap: 5px;
}

.tile-word span {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  font-family: var(--mono);
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 900;
}

.tile-word .miss {
  color: var(--muted);
}

.tile-word .near {
  background: var(--panel);
}

.tile-word .hit {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--signal-ink);
}

.terminal-shot {
  margin: 0;
}

.terminal-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  background: #101719;
  box-shadow: 18px 20px 0 var(--shadow);
}

.quickstart {
  min-height: 86dvh;
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(480px, 1.16fr);
  align-items: center;
  gap: clamp(52px, 9vw, 136px);
  padding-block: clamp(58px, 6vw, 82px);
  border-top: 1px solid var(--line);
}

h2 {
  margin: 16px 0 0;
  font-size: clamp(2.8rem, 5vw, 5.6rem);
  font-weight: 850;
  letter-spacing: -0.065em;
  line-height: 0.9;
  text-transform: uppercase;
}

.mode-list {
  margin-top: 44px;
  border-top: 1px solid var(--line-strong);
}

.mode-list article {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 8px 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.mode-list h3 {
  grid-row: 1 / span 2;
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: -0.035em;
}

.mode-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.mode-list code {
  justify-self: start;
  padding: 5px 8px;
  border-left: 2px solid var(--signal);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 0.65rem;
}

.share-note {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.share-note::before {
  margin-right: 8px;
  color: var(--signal);
  content: "■";
}

.install-card {
  padding: clamp(28px, 3vw, 42px);
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  box-shadow: 16px 18px 0 var(--shadow);
}

.install-card h2 {
  max-width: 10ch;
  font-size: clamp(2.7rem, 4.5vw, 5rem);
}

.install-command {
  margin-top: 30px;
}

.requirement {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.source-path {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.source-path h3 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}

.source-path > p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.source-path > p code {
  font-family: var(--mono);
}

.install-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin-top: 24px;
}

.install-links a {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 750;
}

.install-links a:hover {
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.footer-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--ink);
  font-size: 0.76rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner div {
  display: flex;
  gap: 22px;
}

.not-found {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.not-found main {
  max-width: 760px;
}

.not-found h1 {
  font-size: clamp(3.5rem, 10vw, 8rem);
}

.source-link {
  display: inline-block;
  margin-top: 30px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 800;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    animation: enter 720ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .reveal-late {
    animation-delay: 120ms;
  }

  .challenge {
    animation: enter 500ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  @keyframes enter {
    from {
      opacity: 0;
      transform: translateY(18px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 1000px) {
  .hero,
  .quickstart {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 64px;
    padding-block: 72px 96px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-stage {
    width: min(850px, 100%);
    margin-left: auto;
  }

  .quickstart {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  :root {
    --frame: calc(100vw - 32px);
  }

  html {
    scroll-behavior: auto;
  }

  body {
    background-size: 40px 40px;
  }

  .nav {
    min-height: 64px;
  }

  .challenge,
  .has-shared-puzzle .challenge {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 18px;
  }

  .hero {
    padding-block: 64px 84px;
  }

  h1 {
    font-size: clamp(3.45rem, 17vw, 6rem);
  }

  h1 span:last-child {
    margin-left: 16px;
  }

  .feature-line {
    margin-top: 40px;
  }

  .hero-stage {
    padding: 54px 0 22px 10px;
  }

  .hero-stage::before {
    right: -24px;
    left: 8%;
  }

  .tile-word {
    grid-template-columns: repeat(5, minmax(34px, 52px));
  }

  .terminal-shot img {
    box-shadow: 10px 12px 0 var(--shadow);
  }

  .quickstart {
    gap: 64px;
    padding-block: 82px 96px;
  }

  .install-card {
    padding: 28px 20px;
    box-shadow: 10px 12px 0 var(--shadow);
  }

  .footer-inner {
    min-height: 130px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .command-box {
    grid-template-columns: 1fr;
  }

  .copy-control {
    min-height: 48px;
    border-top: 1px solid var(--line-strong);
    border-left: 0;
  }

  .mode-list article {
    grid-template-columns: 1fr;
  }

  .mode-list h3 {
    grid-row: auto;
  }

  .mode-list code {
    max-width: 100%;
    overflow-x: auto;
  }
}