:root {
  --bg: #000;
  --fg: #f0ede0;
  --accent: #ffb454;
  --secondary: #aaa;
  --dim: #777;
  --rule: #151515;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --page-pad: clamp(16px, 4vw, 48px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
a:hover { border-bottom-color: var(--accent); }
a:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }

pre, code { font-family: var(--font-mono); margin: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* 1 · Top bar */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px var(--page-pad);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--dim);
  border-bottom: 1px solid var(--rule);
}
.topbar .brand { color: var(--fg); }
.topbar .bar-link { color: var(--dim); }
.topbar .bar-link:hover { color: var(--fg); }

/* 2 · Hero */
.hero {
  padding: clamp(48px, 10vh, 120px) var(--page-pad) clamp(32px, 6vh, 80px);
  text-align: left;
}
.wordmark { overflow-x: auto; }
.wordmark pre {
  display: inline-block;
  font-size: clamp(8px, 1.6vw, 14px);
  line-height: 1.0;
  color: var(--fg);
}
.tagline {
  margin: 24px 0 0;
  color: var(--secondary);
  font-size: 14px;
}
.cursor {
  color: var(--accent);
  display: inline-block;
  margin-left: 2px;
  animation: cursor-blink 1s steps(1) infinite;
}
@keyframes cursor-blink { 50% { opacity: 0; } }

/* 3 · Facts strip */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.facts .fact {
  padding: 14px var(--page-pad);
  border-left: 1px solid var(--rule);
}
.facts .fact:first-child { border-left: 0; }
.facts .label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--dim);
}
.facts .value {
  display: block;
  margin-top: 6px;
  font-size: 14px;
}
.facts .version { color: var(--accent); }

@media (max-width: 720px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts .fact:nth-child(3) { border-left: 0; }
}

/* 4 · Numbered features */
.features {
  padding: clamp(32px, 6vh, 64px) var(--page-pad);
}
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.feature-list li {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 24px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.feature-list li:last-child { border-bottom: 0; }
.feature-list .num   { color: var(--dim); }
.feature-list .name  { color: var(--fg); }
.feature-list .tag   { color: var(--accent); }

@media (max-width: 720px) {
  .feature-list li {
    grid-template-columns: 48px 1fr;
    gap: 12px;
  }
  .feature-list .tag {
    grid-column: 2;
    font-size: 11px;
    margin-top: 4px;
  }
}

/* 5 · Install + usage */
.install {
  padding: clamp(32px, 6vh, 64px) var(--page-pad);
  border-top: 1px solid var(--rule);
}
.section-label {
  margin: 0 0 14px;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--dim);
  font-weight: normal;
}
.install .code { margin-bottom: 24px; }
.code {
  background: transparent;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre;
  overflow-x: auto;
}
.code .prompt { color: var(--dim); }
.code .cmd    { color: var(--accent); }
.reference {
  margin: 0;
  color: var(--dim);
  font-size: 12px;
}
.reference a { color: var(--dim); }
.reference a:hover { color: var(--fg); }

/* 6 · CLI command table */
.cli {
  padding: clamp(32px, 6vh, 64px) var(--page-pad);
  border-top: 1px solid var(--rule);
}
.cli-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.cli-table th,
.cli-table td {
  text-align: left;
  padding: 10px 16px 10px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.cli-table th {
  font-weight: normal;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--dim);
}
.cli-table td:first-child { width: 120px; }
.cli-table td code {
  color: var(--accent);
  font-size: 13px;
}
.cli-table td:last-child {
  color: var(--secondary);
}

/* 7 · ASCII marquee band */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  white-space: nowrap;
}
.marquee-track {
  display: inline-block;
  color: var(--dim);
  font-size: 14px;
  letter-spacing: 0.08em;
  padding-left: 100%;
  animation: marquee-scroll 30s linear infinite;
}
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-100%); }
}

/* 8 · Footer */
.footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  padding: 24px var(--page-pad) 32px;
  font-size: 12px;
  color: var(--secondary);
}
.footer .cluster { display: flex; flex-direction: column; gap: 4px; }
.footer .cluster-mid    { align-items: center; }
.footer .cluster-right  { align-items: flex-end; }
.footer .locale,
.footer .license { color: var(--dim); letter-spacing: 0.14em; }
.footer .clock { color: var(--secondary); letter-spacing: 0.06em; }
.footer .attribution { color: var(--dim); font-size: 11px; }
.footer .attribution:hover { color: var(--fg); }
.footer a { display: block; }

/* Topbar mobile fix — at sub-720px viewports, drop the middle PARSE·CST·AST·JSON
   tags label which is decorative; the rest of the bar wraps as flex items. */
@media (max-width: 720px) {
  .topbar .bar-tags { display: none; }
  .topbar {
    flex-wrap: wrap;
    gap: 4px 14px;
  }
  .footer {
    grid-template-columns: 1fr;
  }
  .footer .cluster-mid,
  .footer .cluster-right { align-items: flex-start; }
}

/* Reduced motion — CSS animations only.
   JS-driven animations are skipped in main.js when the user prefers
   reduced motion. */
@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; }
  .marquee { display: none; }
}

/* Print */
@media print {
  html, body { background: #fff; color: #000; }
  .cursor, .marquee { display: none; }
  .topbar, .footer { border-color: #ccc; }
  a { color: #000; border-bottom: 1px solid #000; }
}