/* Artex landing — tokens from the logo: ink #0E0E10, bone #F5F5F0, ember #FF5A1F */
:root {
  color-scheme: dark;
  --ink: #0e0e10;
  --ink-2: #141416;
  --ink-3: #1b1b1e;
  --line: #26262a;
  --line-2: #333338;
  --bone: #f5f5f0;
  --mute: #9a9a96;
  --mute-2: #6b6b68;
  --ember: #ff5a1f;
  --ember-soft: rgba(255, 90, 31, 0.14);
  --ok: #8fd18b;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --r: 14px;
  --r-sm: 8px;
  --max: 1120px;
  --gutter: 24px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
code, pre, textarea, .answer-body { font-family: var(--mono); font-variant-ligatures: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* pixel square motif */
.sq { display: inline-block; width: 10px; height: 10px; border-radius: 2px; background: var(--ember); vertical-align: middle; }
.sq.sm { width: 8px; height: 8px; }

/* ---------- NAV ---------- */
.nav {
  position: fixed; inset: 16px 16px auto; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 1240px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; }
.mark { width: 30px; height: 30px; padding: 6px; background: var(--ink); border: 1px solid var(--line); border-radius: 9px; }
.wordmark { font-weight: 700; font-size: 22px; letter-spacing: -0.04em; }
.dot { color: var(--ember); }
.nav-links {
  display: flex; gap: 4px; padding: 5px;
  background: rgba(20, 20, 22, 0.72); border: 1px solid var(--line);
  border-radius: 12px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.nav-links a { padding: 7px 14px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--mute); transition: color .15s, background .15s; }
.nav-links a:hover { color: var(--bone); background: var(--ink-3); }

.btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 20px; border-radius: 10px; font-weight: 600; font-size: 15px; transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-light { background: var(--bone); color: var(--ink); }
.btn-hot { background: var(--ember); color: var(--ink); height: 48px; padding: 0 28px; }
.btn-hot:hover { background: #ff7040; }

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: grid; place-items: center; padding: 120px var(--gutter) 64px;
  overflow: hidden; isolation: isolate;
}
.pixel-field { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 60% 55% at 50% 48%, var(--ink) 30%, transparent 75%),
              linear-gradient(to bottom, transparent 70%, var(--ink));
}
.hero-inner { min-width: 0; width: 100%; max-width: 760px; text-align: center; }
.eyebrow { margin: 0 0 20px; font: 400 13px var(--mono); letter-spacing: .06em; color: var(--mute); }
.eyebrow .sq { margin-right: 8px; }
h1 { margin: 0; font-size: clamp(44px, 8vw, 84px); line-height: 1.02; font-weight: 800; letter-spacing: -0.045em; }
.lede { max-width: 560px; margin: 20px auto 40px; font-size: 18px; color: var(--mute); }

/* composer */
.composer { text-align: left; }
.tabs { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  flex: none; padding: 8px 16px; border: 1px solid var(--line); border-bottom: 0;
  border-radius: 10px 10px 0 0; background: var(--ink-2); color: var(--mute-2);
  font-size: 14px; font-weight: 500; transition: color .15s, background .15s;
}
.tab:hover { color: var(--bone); }
.tab.is-active { background: var(--ink-3); color: var(--bone); }
.badge { margin-left: 4px; padding: 1px 6px; border-radius: 5px; background: var(--ember-soft); color: var(--ember); font: 500 11px var(--mono); vertical-align: 1px; }
.box {
  background: var(--ink-3); border: 1px solid var(--line-2);
  border-radius: 0 var(--r) var(--r) var(--r);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(255,90,31,0);
  transition: box-shadow .2s, border-color .2s;
}
.box:focus-within { border-color: #4a3a33; box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), 0 0 0 4px var(--ember-soft); }
textarea {
  display: block; width: 100%; padding: 18px 18px 8px; border: 0; outline: 0; resize: none;
  background: transparent; color: var(--bone); font: 400 15px/1.6 var(--mono);
}
textarea::placeholder { color: var(--mute-2); }
.box-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 12px 14px; }
.chips-left { display: flex; gap: 8px; flex-wrap: wrap; }
.pill { display: inline-flex; align-items: center; gap: 7px; height: 30px; padding: 0 12px; border: 1px solid var(--line-2); border-radius: 999px; font: 500 12.5px var(--mono); }
.pill-dim { color: var(--mute); }
.send { display: grid; place-items: center; width: 36px; height: 36px; border: 0; border-radius: 10px; background: var(--bone); color: var(--ink); transition: background .15s, transform .15s; }
.send svg { width: 18px; height: 18px; }
.send:hover { background: var(--ember); transform: translateY(-1px); }
.send:disabled { opacity: .5; cursor: progress; }

.answer { margin-top: 12px; padding: 16px 18px; background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--r); animation: rise .25s ease-out; }
.answer-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; font: 500 13px var(--mono); }
.answer-head .meta { margin-left: auto; color: var(--mute-2); font-weight: 400; }
.answer-body { font: 400 14px/1.65 var(--mono); white-space: pre-wrap; word-break: break-word; }
.answer-body .caret { display: inline-block; width: 8px; height: 15px; background: var(--ember); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
.fineprint { margin: 12px 0 0; text-align: center; font-size: 12px; color: var(--mute-2); }

.suggestions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 24px; }
.suggest { padding: 9px 16px; border: 1px solid var(--line-2); border-radius: 10px; background: rgba(27,27,30,.7); font-size: 14px; color: var(--mute); backdrop-filter: blur(8px); transition: color .15s, border-color .15s; }
.suggest:hover { color: var(--bone); border-color: var(--ember); }

/* ---------- SECTIONS ---------- */
.section { max-width: var(--max); margin: 0 auto; padding: 120px var(--gutter) 0; }
.section-head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.kicker { margin: 0 0 14px; font: 400 13px var(--mono); color: var(--ember); }
h2 { margin: 0; font-size: clamp(32px, 5vw, 52px); line-height: 1.08; font-weight: 700; letter-spacing: -0.035em; }
.sub { margin: 18px 0 0; font-size: 17px; color: var(--mute); }
h3 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }

/* compare */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.card { min-width: 0; padding: 24px; border-radius: var(--r); border: 1px solid var(--line); background: var(--ink-2); }
.card-hot { border-color: #4a2e22; background: linear-gradient(180deg, rgba(255,90,31,.06), var(--ink-2) 40%); }
.card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font: 500 13px var(--mono); color: var(--mute); }
.card-head .sq { margin-right: 6px; }
.card-hot .card-head > span:first-child { color: var(--bone); }
.count { padding: 3px 8px; border-radius: 6px; background: var(--ink-3); }
.count.hot { background: var(--ember-soft); color: var(--ember); }
.q { margin: 0 0 16px; font: 400 14px var(--mono); color: var(--bone); }
.verbose { position: relative; max-height: 232px; overflow: hidden; color: var(--mute-2); font-size: 14px; }
.verbose p { margin: 0 0 12px; }
.verbose::after { content: ""; position: absolute; inset: auto 0 0; height: 80px; background: linear-gradient(transparent, var(--ink-2)); }
.code { margin: 0 0 14px; padding: 18px 20px; border-radius: var(--r-sm); background: var(--ink); border: 1px solid var(--line); font-size: 22px; }
.terse { margin: 0; color: var(--mute); font-size: 15px; }
.terse code { padding: 1px 6px; border-radius: 5px; background: var(--ink-3); font-size: 13px; color: var(--bone); }

/* syntax */
.k { color: #c792ea; } .v { color: var(--bone); } .s { color: #e8c07d; } .n { color: var(--ember); }
.dim { color: var(--mute-2); } .hot { color: var(--ember); } .ok { color: var(--ok); }

/* features */
.feature-wrap { display: grid; grid-template-columns: 180px 1fr; gap: 40px; }
.feature-nav { position: sticky; top: 110px; align-self: start; margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.feature-nav a { display: block; padding: 9px 14px; border-radius: 9px; font-size: 15px; color: var(--mute-2); border: 1px solid transparent; transition: all .15s; }
.feature-nav a:hover { color: var(--bone); }
.feature-nav a.is-active { color: var(--bone); background: var(--ink-3); border-color: var(--line); }
.feature-list { display: grid; gap: 20px; }
.feature { min-width: 0; display: grid; grid-template-columns: 1.35fr 1fr; border: 1px solid var(--line); border-radius: var(--r); background: var(--ink-2); overflow: hidden; }
.feature-visual {
  position: relative; display: grid; place-items: center; padding: 40px 28px; min-height: 300px;
  background-color: var(--ink);
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 18px 18px;
}
.feature-copy { display: flex; flex-direction: column; justify-content: center; gap: 14px; padding: 32px; border-left: 1px solid var(--line); }
.feature-copy p { margin: 0; color: var(--mute); font-size: 15.5px; }

.term { width: 100%; max-width: 440px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--ink-2); box-shadow: 0 24px 60px -24px #000; overflow: hidden; }
.term-bar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.term-bar i { width: 9px; height: 9px; border-radius: 2px; background: var(--line-2); }
.term-bar i:first-child { background: var(--ember); }
.term-bar span { margin-left: auto; font: 400 11px var(--mono); color: var(--mute-2); }
.term pre { margin: 0; padding: 16px; font-size: 12.5px; line-height: 1.7; overflow-x: auto; }

/* marquee */
.marquee { margin-top: 120px; padding: 28px 0; border-block: 1px solid var(--line); overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent); }
.marquee-track { display: flex; gap: 56px; width: max-content; animation: scroll 40s linear infinite; }
.marquee-track span { font: 500 20px var(--mono); color: var(--mute-2); white-space: nowrap; }
.marquee-track span::before { content: "■"; margin-right: 14px; font-size: 10px; vertical-align: 4px; color: var(--line-2); }
.marquee-track span:nth-child(3n+2)::before { color: var(--ember); }

/* pipeline + specs */
.pipeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.pipeline li { padding: 28px 24px; background: var(--ink-2); border-right: 1px solid var(--line); }
.pipeline li:last-child { border-right: 0; }
.pipeline p { margin: 8px 0 0; color: var(--mute); font-size: 14.5px; }
.step { display: block; margin-bottom: 18px; font: 500 13px var(--mono); color: var(--ember); }
.specs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 20px 0 0; }
.specs div { padding: 24px; border: 1px solid var(--line); border-radius: var(--r); }
.specs dt { white-space: nowrap; font-size: clamp(24px, 6vw, 32px); font-weight: 700; letter-spacing: -0.03em; }
.specs dd { margin: 4px 0 0; font: 400 13px var(--mono); color: var(--mute); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step-card { min-width: 0; padding: 28px 24px; border: 1px solid var(--line); border-radius: var(--r); background: var(--ink-2); }
.step-card h3 { margin-bottom: 18px; }
.cmd { display: flex; align-items: center; gap: 10px; padding: 10px 10px 10px 14px; border-radius: var(--r-sm); background: var(--ink); border: 1px solid var(--line); }
.cmd code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; font-size: 13px; scrollbar-width: none; }
.cmd code::before { content: "$ "; color: var(--mute-2); }
.copy { flex: none; padding: 5px 10px; border: 1px solid var(--line-2); border-radius: 6px; background: var(--ink-3); font: 500 12px var(--mono); color: var(--mute); }
.copy:hover, .copy.is-done { color: var(--ember); border-color: var(--ember); }

/* faq */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 10px; }
.faq details { border: 1px solid var(--line); border-radius: var(--r); background: var(--ink-2); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 22px; list-style: none; cursor: pointer; font-weight: 600; font-size: 16.5px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 10px; height: 10px; border-radius: 2px; background: var(--line-2); transition: background .2s, transform .2s; }
.faq details[open] summary::after { background: var(--ember); transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 22px 20px; color: var(--mute); }

/* cta */
.cta { position: relative; max-width: var(--max); margin: 120px auto 0; padding: 0 var(--gutter); isolation: isolate; }
.cta-inner { position: relative; padding: 96px 24px; text-align: center; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.cta-inner::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse 50% 60% at 50% 50%, rgba(14,14,16,.92) 35%, rgba(14,14,16,.4)); }
.pixel-field-cta { inset: 0 var(--gutter); width: calc(100% - 2 * var(--gutter)); border-radius: 20px; }
.cta p { margin: 16px 0 32px; color: var(--mute); font-size: 17px; }

/* footer */
.footer { max-width: var(--max); margin: 0 auto; padding: 72px var(--gutter) 40px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: end; }
.foot-brand p { margin: 6px 0 0; color: var(--mute); font-size: 14px; }
.foot-links { display: flex; gap: 24px; font-size: 14px; color: var(--mute); }
.foot-links a:hover { color: var(--bone); }
.copy-line { grid-column: 1 / -1; margin: 24px 0 0; padding-top: 24px; border-top: 1px solid var(--line); font: 400 12px var(--mono); color: var(--mute-2); }

/* motion */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes scroll { to { transform: translateX(calc(-50% - 28px)); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .feature-wrap { grid-template-columns: 1fr; }
  .feature-nav { display: none; }
  .feature { grid-template-columns: 1fr; }
  .feature-copy { border-left: 0; border-top: 1px solid var(--line); }
  .pipeline { grid-template-columns: 1fr 1fr; }
  .pipeline li:nth-child(2) { border-right: 0; }
  .pipeline li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .specs { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .nav { inset: 12px 12px auto; }
  .hero { padding-top: 104px; }
  .lede { font-size: 16px; }
  .compare { grid-template-columns: 1fr; }
  .section { padding-top: 88px; }
  .pipeline { grid-template-columns: 1fr; }
  .pipeline li { border-right: 0; border-bottom: 1px solid var(--line); }
  .pipeline li:last-child { border-bottom: 0; }
  .feature-visual { padding: 28px 14px; min-height: 0; }
  .feature-copy { padding: 24px; }
  .specs div { padding: 18px; }
  .footer { grid-template-columns: 1fr; }
  .foot-links { flex-wrap: wrap; gap: 16px; }
  .cta-inner { padding: 72px 20px; }
}