:root {
  --paper: #faf6eb;
  --ink: #131313;
  --lime: #dfff00;
  --orange: #ff6337;
  --purple: #b5a2ff;
  --mono: "Courier New", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Arial, Helvetica, sans-serif; }
button, textarea { font: inherit; }
button, summary { cursor: pointer; }
button, textarea, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid #6850ca; outline-offset: 4px; }
textarea:focus { outline: none; }
button { color: var(--ink); border: 2px solid var(--ink); border-radius: 0; }
button:disabled { cursor: wait; }
.masthead { display: flex; align-items: center; gap: 28px; padding: 20px max(24px, calc((100vw - 1200px) / 2)); border-bottom: 3px solid; background: var(--lime); }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font: 900 38px/1 var(--mono); letter-spacing: -3px; }
.brand-icon { display: grid; place-items: center; background: var(--ink); color: var(--lime); width: 40px; height: 40px; font-size: 33px; }
.brand-dot { font: bold 12px var(--mono); align-self: flex-start; letter-spacing: 0; }
.edition { font: bold 11px/1.45 var(--mono); margin-left: 8px; }
.edition span { font-weight: normal; }
.lang { display: flex; margin-left: auto; box-shadow: 4px 4px 0 var(--ink); }
.lang button { padding: 9px 15px; font: bold 14px var(--mono); background: var(--paper); }
.lang button + button { border-left: 0; }
.lang [aria-pressed="true"] { background: var(--ink); color: var(--lime); }
main { max-width: 1200px; margin: auto; padding: 0 24px 30px; }
.hero { display: grid; grid-template-columns: 1fr 260px; align-items: center; gap: 42px; padding: 44px 0 34px; }
.pixel-dot { width: 8px; height: 8px; display: inline-block; background: var(--ink); flex-shrink: 0; }
h1 { font-size: clamp(45px, 6.4vw, 86px); font-weight: 950; line-height: .96; letter-spacing: -.065em; margin: 18px 0 22px; text-transform: uppercase; }
h1 span { display: table; background: var(--lime); padding: 3px 8px 6px 4px; box-shadow: 5px 5px 0 var(--ink); margin-top: 8px; }
.pixel-stage { transform: rotate(3deg); border: 3px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); background: var(--purple); position: relative; }
.pixel-stage::after { content: "+"; position: absolute; top: -29px; right: -18px; font: 55px/1 var(--mono); }
.window-bar { display: flex; justify-content: space-between; border-bottom: 3px solid; padding: 7px 10px; font: bold 11px var(--mono); }
.pixel-art { width: 100%; display: block; image-rendering: pixelated; }
.stage-caption { text-align: center; font: bold 10px var(--mono); padding: 10px 4px; border-top: 3px solid; }
.eyes { animation: blink 6s steps(1) infinite; }
@keyframes blink { 0%, 94%, 100% { opacity: 1; } 95%, 97% { opacity: 0; } }
.terminal { border: 3px solid var(--ink); background: white; box-shadow: 8px 8px 0 var(--ink); }
.terminal-bar { padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 3px solid; background: var(--purple); font: bold 12px var(--mono); }
.ready { display: flex; gap: 7px; align-items: center; font-size: 10px; }
form { padding: 22px 22px 14px; }
label { display: block; font: bold 14px var(--mono); margin-bottom: 11px; }
.input-row { display: flex; border: 2px solid var(--ink); background: var(--paper); align-items: stretch; }
.prompt { font: bold 23px var(--mono); align-self: flex-start; padding: 17px 0 0 15px; }
textarea { flex: 1; min-width: 0; border: 0; border-radius: 0; background: transparent; resize: vertical; min-height: 84px; padding: 16px 12px; color: var(--ink); font: 15px/1.6 var(--mono); }
textarea::placeholder { color: #686354; }
.send { min-width: 160px; padding: 15px 18px; border: 0; border-left: 2px solid; background: var(--orange); display: flex; align-items: center; justify-content: space-between; gap: 18px; font: bold 16px var(--mono); text-transform: uppercase; }
.send:hover { background: var(--lime); }
.send:active { background: var(--ink); color: var(--lime); }
.send:disabled { background: #ddd5c7; }
.send-arrow { font: 35px/1 var(--mono); }
.form-bottom { display: flex; justify-content: space-between; gap: 12px; padding-top: 11px; color: #5f5b51; font: 10px/1.5 var(--mono); }
.example-area { padding: 0 22px 22px; }
.mini-label { display: block; font: bold 10px var(--mono); margin: 6px 0 10px; }
#examples { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { background: var(--paper); padding: 9px 12px; text-align: left; font: 12px/1.4 var(--mono); border: 1px solid; box-shadow: 2px 2px 0 var(--ink); }
.chip:hover { background: var(--lime); }
.chip:active { transform: translate(2px, 2px); box-shadow: none; }
.result { margin-top: 28px; padding: 24px; border: 3px solid; background: var(--lime); box-shadow: 8px 8px 0 var(--ink); }
.result[data-state="loading"] { background: var(--paper); }
.result-bar { display: flex; align-items: center; justify-content: space-between; border-bottom: 2px solid; padding-bottom: 11px; gap: 12px; font: bold 12px var(--mono); }
.elapsed { background: var(--ink); color: var(--lime); padding: 4px 8px; font-size: 11px; white-space: nowrap; }
h2 { margin: 18px 0 9px; font-size: clamp(26px, 4.3vw, 48px); line-height: 1.1; letter-spacing: -.04em; overflow-wrap: anywhere; }
.result p { font: 14px/1.6 var(--mono); margin: 12px 0; }
.result dl { display: grid; grid-template-columns: minmax(100px,1fr) minmax(130px,2fr); margin: 18px 0; border-top: 2px solid; }
.result dt, .result dd { border-bottom: 1px solid #999e39; padding: 12px 0; font: 14px/1.45 var(--mono); overflow-wrap: anywhere; }
.result dt { padding-right: 18px; }
.result dd { font-weight: bold; margin: 0; }
.result .sources { font-size: 11px; border-top: 2px solid; padding-top: 12px; overflow-wrap: anywhere; }
.guide { margin-top: 27px; border-bottom: 2px solid; padding-bottom: 16px; }
summary { font: bold 12px/1.5 var(--mono); }
.guide-body { padding-top: 7px; max-width: 800px; }
.guide-body p { font: 13px/1.7 var(--mono); }
#lookup-examples { display: flex; gap: 8px; flex-wrap: wrap; }
footer { max-width: 1200px; margin: auto; display: flex; justify-content: space-between; gap: 24px; padding: 0 24px 28px; font: 10px/1.6 var(--mono); text-transform: uppercase; }
.footer-brand { white-space: nowrap; font-weight: bold; }
body[data-busy="true"] .ready .pixel-dot { animation: blink .8s steps(1) infinite; }
@media (min-width: 1400px) { main { padding-inline: 0; } }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr 200px; gap: 30px; }
}
@media (max-width: 640px) {
  .masthead { padding: 16px 20px; gap: 12px; }
  .brand { font-size: 29px; }
  .brand-icon { width: 32px; height: 32px; font-size: 27px; }
  .edition { display: none; }
  .lang button { padding: 7px 12px; }
  main { padding-inline: 18px; }
  .hero { grid-template-columns: 1fr; padding-top: 29px; gap: 0; }
  .pixel-stage { display: none; }
  h1 { font-size: clamp(42px, 10.2vw, 64px); margin-top: 16px; }
  .terminal-bar { padding: 11px 14px; font-size: 11px; }
  form { padding: 17px 14px 12px; }
  .input-row { flex-wrap: wrap; }
  .prompt { padding-left: 9px; font-size: 18px; }
  textarea { padding-left: 7px; font-size: 14px; min-height: 92px; }
  .send { width: 100%; border-left: 0; border-top: 2px solid; padding: 9px 16px; min-height: 48px; font-size: 14px; }
  .send-arrow { font-size: 27px; }
  .example-area { padding: 0 14px 18px; }
  .chip { font-size: 11px; }
  .result { padding: 17px 14px; }
  .result p { font-size: 12px; }
  .result dt, .result dd { font-size: 12px; }
  footer { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .eyes, body[data-busy="true"] .ready .pixel-dot { animation: none; }
}

/* Dark arcade palette, with solid borders and offset shadows. */
:root { color-scheme: dark; --paper: #121314; --ink: #f3f1e8; --line: #606163; --shadow: #030303; }
body { background: #121314; background-image: radial-gradient(#292a2b .7px, transparent .7px); background-size: 8px 8px; }
.masthead { background: #121314; border-color: #606163; }
.brand { color: var(--lime); font-size: 34px; letter-spacing: -2.5px; }
.brand-icon { color: #111; background: var(--lime); }
.edition { color: #b6b8b2; }
.lang { box-shadow: 4px 4px 0 var(--shadow); }
.lang button { border-color: #72746a; }
.lang [aria-pressed="true"] { background: var(--lime); color: #111; border-color: var(--lime); }
h1 span { color: #121314; box-shadow: 5px 5px 0 #636d22; }
.pixel-stage { border-color: #b5a2ff; box-shadow: 8px 8px 0 var(--shadow); color: #111; }
.pixel-stage::after { color: var(--orange); }
.window-bar { border-color: #111; }
.stage-caption { border-color: #111; }
.terminal { background: #1c1e1f; border-color: #848776; box-shadow: 8px 8px 0 var(--shadow); }
.terminal-bar { background: #242623; color: var(--lime); border-color: #848776; }
.ready .pixel-dot { background: var(--lime); }
.input-row { background: #101112; border-color: #858a70; }
textarea::placeholder { color: #8f9487; }
.prompt { color: var(--lime); }
.send { color: #111; border-color: #858a70; }
.send:active { background: var(--purple); color: #111; }
.send:disabled { background: #5b6251; color: #e1e4db; }
.form-bottom { color: #b1b5a7; }
.mini-label { color: #b9bdae; }
.chip { background: #252823; color: #dde0d5; border-color: #717761; box-shadow: 2px 2px 0 var(--shadow); }
.chip:hover { color: #111; }
.result { background: #1c2619; border-color: #a8ba7d; box-shadow: 8px 8px 0 var(--shadow); }
.result-bar { color: #c6e4ab; border-color: #607650; }
.elapsed { color: #111; background: var(--lime); }
.result[data-state="loading"] { background: #1c1e1f; }
.result h2 { color: var(--lime); }
.result p { color: #d0d9c5; }
.result dl { border-color: #607650; }
.result dt, .result dd { border-color: #43513a; }
.result .sources { color: #b4c5a3; border-color: #607650; }
.guide { color: #c0c7b6; border-color: #535c49; }
footer { color: #9caa8d; }
@media (max-width: 640px) { .brand { font-size: 28px; letter-spacing: -2px; } }