/* ═══════════════════════════════════════════════════════════════
   AUTONA MACHINES / LANDING
   One page, seven sections, a contents rail, and a scroll.
   Vintage academic-paper aesthetic. No build step. No framework.
   Design tokens ported from the Autona thesis stylesheet.
   ═══════════════════════════════════════════════════════════════ */

/* ── self-hosted fonts ────────────────────────────────────────
   Variable, latin subset, woff2. Self-hosted rather than loaded
   from a CDN: no render-blocking third-party request, and no
   third party learning who reads this page.
   Cormorant Garamond & JetBrains Mono, SIL Open Font License 1.1.
   ─────────────────────────────────────────────────────────── */

@font-face {
  font-family: "Cormorant Garamond";
  font-style: normal;
  font-weight: 300 700;
  font-display: swap;
  src: url("fonts/cormorant-garamond-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Cormorant Garamond";
  font-style: italic;
  font-weight: 300 700;
  font-display: swap;
  src: url("fonts/cormorant-garamond-latin-italic.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("fonts/jetbrains-mono-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #fbfaf7;
  --paper-raise: #f3f1ec;
  --ink: #14151a;
  --ink-soft: #3c3e45;
  --ink-faint: #676a71;
  --rule: rgba(20, 21, 26, 0.3);
  --rule-soft: rgba(20, 21, 26, 0.15);
  --wash: rgba(20, 21, 26, 0.04);
  --grain-opacity: 0.022;
  /* three accents, used semantically and never decoratively:
     accent = Autona / the answer / shipping · neg = the cost · mid = partial */
  --accent: #15606e;
  --accent-soft: rgba(21, 96, 110, 0.075);
  --accent-line: rgba(21, 96, 110, 0.32);
  --neg: #9c3623;
  --neg-soft: rgba(156, 54, 35, 0.07);
  --mid: #856018;
  --serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
           "Helvetica Neue", Arial, sans-serif;
  --display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --content-w: 780px;
}

html[data-theme="dark"] {
  --paper: #1c1b19;
  --paper-raise: #24231f;
  --ink: #ddd9d0;
  --ink-soft: #b6b2a9;
  --ink-faint: #8f8b84;
  --rule: rgba(221, 217, 208, 0.26);
  --rule-soft: rgba(221, 217, 208, 0.13);
  --wash: rgba(221, 217, 208, 0.045);
  --grain-opacity: 0.03;
  --accent: #6aa9b2;
  --accent-soft: rgba(106, 169, 178, 0.1);
  --accent-line: rgba(106, 169, 178, 0.28);
  --neg: #c97b66;
  --neg-soft: rgba(201, 123, 102, 0.09);
  --mid: #b99850;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  /* single master type-scale knob: 87.5% of 16px = 14px */
  font-size: 87.5%;
  background: var(--paper);
  scroll-behavior: smooth;
  scroll-padding-top: 40px;
}

body {
  margin: 0;
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: subpixel-antialiased;
  font-feature-settings: "kern" 1, "liga" 1;
  color: var(--ink);
  background: var(--paper);
  transition: background 0.35s ease, color 0.35s ease;
  overflow-x: hidden;
}

/* paper grain: inline fractal noise, zero network cost */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--accent); color: var(--paper); }

a { color: inherit; text-decoration-color: var(--accent-line); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }

img, video { max-width: 100%; display: block; }

/* ── layout ───────────────────────────────────────────────── */

.page { max-width: var(--content-w); margin: 0 auto; padding: 0 24px 100px; }

/* ── masthead ─────────────────────────────────────────────── */

.masthead { padding: 200px 0 0; }

.masthead-kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 22px;
}

.site-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1.03;
  letter-spacing: -0.012em;
  margin: 0 0 20px;
}
.site-title em { font-style: italic; color: var(--accent); }

.site-sub {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.05rem, 2.3vw, 1.32rem);
  line-height: 1.45;
  color: var(--ink-soft);
  margin: 0 0 34px;
  max-width: 40ch;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 40px; }

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 11px 18px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn.primary:hover { background: transparent; color: var(--accent); }

/* ── sections ─────────────────────────────────────────────── */

section.sec { padding: 12px 0 0; margin-top: 76px; }

.sec-num {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--accent);
  margin-bottom: 10px;
}

.sec h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.8rem, 4.4vw, 2.5rem);
  line-height: 1.09;
  letter-spacing: -0.008em;
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}

.sec h2 {
  font-size: 1.22rem;
  font-weight: 650;
  letter-spacing: -0.006em;
  margin: 34px 0 10px;
}

.sec h3 {
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 30px 0 10px;
}

.sec p { margin: 0 0 13px; text-wrap: pretty; }
.sec ul, .sec ol { margin: 0 0 16px; padding-left: 22px; }
.sec li { margin-bottom: 7px; }

.lead { font-size: 1.08em; color: var(--ink-soft); }

.takeaways {
  font-style: italic;
  color: var(--ink-soft);
  border-left: 2px solid var(--accent-line);
  padding: 2px 0 2px 15px;
  margin: 0 0 22px !important;
  font-size: 0.97em;
}

.divider {
  text-align: center;
  font-family: var(--mono);
  color: var(--rule);
  letter-spacing: 0.5em;
  margin: 72px 0 0;
  user-select: none;
}

/* ── callout / pullquote ──────────────────────────────────── */

.callout {
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  padding: 15px 18px;
  margin: 24px 0 26px;
  font-size: 0.97em;
}
.callout b { color: var(--accent); }

.callout.warn { background: var(--neg-soft); border-left-color: var(--neg); }
.callout.warn b { color: var(--neg); }

.pullquote {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.38rem;
  line-height: 1.35;
  text-align: center;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 26px 8px 24px;
  margin: 38px 0 30px !important;
}
.pullquote .src {
  display: block;
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 16px;
}

/* ── the loop, and the runtime component list ─────────────── */

.loop,
.comps {
  border-top: 1px solid var(--ink);
  margin: 28px 0 10px;
  counter-reset: stage;
}

.stage,
.comp {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0 20px;
  border-bottom: 1px solid var(--rule-soft);
  padding: 22px 0 20px;
  transition: background 0.4s ease;
}
.stage:last-child,
.comp:last-child { border-bottom: 1px solid var(--ink); }
.stage.on { background: var(--accent-soft); }

.stage .sn,
.comp .sn {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
  padding-top: 1px;
}
.stage .sbody,
.comp .sbody { min-width: 0; }
.stage h2,
.comp h2 {
  margin: 0 0 5px;
  font-size: 1.06rem;
  font-weight: 650;
  letter-spacing: -0.005em;
}
.stage .what,
.comp .what { margin: 0 0 8px; color: var(--ink-soft); }
.stage .how,
.comp .how {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--ink-faint);
}
.stage .how b,
.comp .how b { color: var(--accent); font-weight: 600; }

/* the three routes to a sample set, inside a stage row */
.routes { margin: 0 0 10px; padding-left: 18px; }
.routes li { margin-bottom: 5px; color: var(--ink-soft); }
.routes b { color: var(--ink); }

.loop-close {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 16px 0 0;
}
.loop-close .arrow { font-size: 1rem; }

/* ── figures & video ──────────────────────────────────────── */

figure {
  margin: 28px 0 30px;
  border: 1px solid var(--rule);
  padding: 20px 16px 12px;
  background: var(--paper-raise);
}
figure svg { display: block; width: 100%; height: auto; }
figure img { width: 100%; }

figcaption {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  text-align: center;
  line-height: 1.65;
}

svg .ln  { stroke: var(--ink); fill: none; stroke-width: 1.3; stroke-linecap: round; }
svg .lnd { stroke: var(--ink-faint); fill: none; stroke-width: 1.1; stroke-dasharray: 4 4; }
svg .bx  { fill: none; stroke: var(--ink); stroke-width: 1.3; }
svg .bxw { fill: var(--wash); stroke: var(--ink); stroke-width: 1.3; }
svg .bxa { fill: var(--accent); stroke: none; }
svg .bxao{ fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.4; }
svg .lna { stroke: var(--accent); fill: none; stroke-width: 1.4; stroke-linecap: round; }
svg .tx  { fill: var(--ink); font-family: var(--mono); }
svg .txs { fill: var(--ink-faint); font-family: var(--mono); }
svg .txa { fill: var(--accent); font-family: var(--mono); }
svg .lnn { stroke: var(--neg); fill: none; stroke-width: 1.3; stroke-linecap: round; }
svg .bxn { fill: var(--neg-soft); stroke: var(--neg); stroke-width: 1.3; }
svg .txn { fill: var(--neg); font-family: var(--mono); }
svg .dot { fill: var(--ink); }
svg .dotn { fill: var(--neg); }

/* clip grid */
.clips {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin: 28px 0 22px;
}

.clip {
  border: 1px solid var(--rule);
  background: var(--paper-raise);
  padding: 0;
  margin: 0;
}
.clip .frame {
  position: relative;
  display: block;
  width: 100%;
  border: 0;
  padding: 0;
  background: #0c0c0c;
  cursor: pointer;
  line-height: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
/* contain, not cover: these are evidence frames, nothing gets cropped */
.clip video, .clip .frame img { width: 100%; height: 100%; object-fit: contain; }
.clip video { display: none; }
.clip.live video { display: block; }
.clip.live .frame img, .clip.live .play { display: none; }

.play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.play span {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(12, 12, 12, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 8px 14px;
}
.clip .frame:hover .play span { background: var(--accent); border-color: var(--accent); }

.clip figcaption {
  margin: 0;
  border-top: 1px solid var(--rule-soft);
  padding: 11px 13px 12px;
  text-align: left;
  line-height: 1.65;
}
.clip figcaption b {
  display: block;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.clip figcaption .prompt { color: var(--accent); }

/* cad strip */
.cadstrip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin: 24px 0 20px;
}
.cadstrip figure { margin: 0; padding: 10px 10px 6px; }
.cadstrip img { height: 230px; object-fit: contain; }
.cadstrip figcaption { font-size: 0.64rem; padding-top: 9px; margin-top: 9px; }

/* ── tables ───────────────────────────────────────────────── */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 22px;
  font-size: 0.94em;
}
thead th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--ink);
  padding: 0 12px 8px 0;
}
tbody td {
  border-bottom: 1px solid var(--rule-soft);
  padding: 10px 12px 10px 0;
  vertical-align: top;
}
tbody td small { display: block; color: var(--ink-faint); font-size: 0.86em; }
tbody tr:last-child td { border-bottom: 1px solid var(--rule); }
tr.hl td { background: var(--accent-soft); font-weight: 600; }
.verdict-yes { color: var(--accent); font-weight: 600; }
.verdict-no  { color: var(--neg); font-weight: 600; }
.verdict-mid { color: var(--mid); font-weight: 600; }

.srcnote {
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.7;
  color: var(--ink-faint);
  margin: -8px 0 24px !important;
}

/* ── contact ──────────────────────────────────────────────── */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin: 26px 0 30px;
}
.contact-cell { padding: 18px 18px 16px; border-right: 1px solid var(--rule-soft); }
.contact-cell:last-child { border-right: 0; }
.contact-cell .k {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
}
.contact-cell .v { font-size: 1rem; }
.contact-cell .v a { text-decoration-thickness: 1px; }

.site-footer {
  margin-top: 78px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.85;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

/* ── floating controls ────────────────────────────────────── */

.float-controls {
  position: fixed;
  right: 22px;
  bottom: 20px;
  z-index: 1300;
  display: flex;
  gap: 8px;
}

.fbtn {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 9px 13px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.fbtn:hover { background: var(--ink); color: var(--paper); }
.fbtn-icon { margin-right: 6px; font-family: var(--serif); }

/* ── contents rail ────────────────────────────────────────── */

.menu-btn { position: fixed; top: 18px; left: 20px; z-index: 1310; transition: opacity 0.2s ease; }
html.nav-open .menu-btn { opacity: 0; pointer-events: none; }

/* below the rail breakpoint the button sits with the other floating controls,
   so it can never cover a heading */
@media (max-width: 1099px) {
  .menu-btn { top: auto; bottom: 20px; left: 20px; }
}

.menu-panel {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: min(292px, 86vw);
  background: var(--paper);
  border-right: 1px solid var(--ink);
  z-index: 1250;
  display: flex;
  flex-direction: column;
  transform: translateX(-102%);
  transition: transform 0.32s cubic-bezier(0.22, 0.9, 0.3, 1);
}
.menu-panel.open { transform: translateX(0); }

.mp-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--rule);
}
.mp-brand {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1.7;
  text-transform: uppercase;
}
.mp-brand span { display: block; color: var(--ink-faint); font-weight: 400; letter-spacing: 0.14em; }

.mp-close {
  flex: 0 0 auto;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  font-size: 1rem;
  line-height: 1;
  padding: 4px 8px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.mp-close:hover { background: var(--ink); color: var(--paper); }

.mp-body { padding: 18px 18px 30px; overflow-y: auto; flex: 1 1 auto; }

.mp-title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.menu-panel ol { list-style: none; margin: 0 0 22px; padding: 0 0 0 12px; }
.menu-panel ol li { margin-bottom: 3px; }
.menu-panel ol a {
  display: flex;
  gap: 9px;
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 5px 0 5px 10px;
  border-left: 2px solid transparent;
  margin-left: -12px;
}
.menu-panel ol a:hover { color: var(--ink); }
.menu-panel ol a.active {
  border-left-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}
.mnum {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  padding-top: 1px;
}
.menu-panel ol a.active .mnum { color: var(--accent); }

.mp-foot {
  padding: 16px 18px 20px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.66rem;
  line-height: 1.8;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  text-transform: uppercase;
}

@media (min-width: 1100px) {
  body { transition: padding-left 0.32s cubic-bezier(0.22, 0.9, 0.3, 1); }
  html.nav-open body { padding-left: min(292px, 86vw); }
}

/* ── inline contents (mobile / no-rail fallback) ──────────── */

.inline-contents {
  /* the rail carries the contents above 1100px; hidden by default so that
     populating it from JS can never shift the layout */
  display: none;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 16px 0 12px;
  margin: 0 0 12px;
}
.inline-contents ol { list-style: none; margin: 0; padding: 0; }
.inline-contents li { display: flex; gap: 10px; margin-bottom: 6px; font-size: 0.94rem; }
.inline-contents .cn { font-family: var(--mono); font-size: 0.7rem; color: var(--ink-faint); padding-top: 3px; }

@media (max-width: 1099px) { .inline-contents { display: block; } }

/* ── reveal on scroll ─────────────────────────────────────── */

.rv { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 0.9, 0.3, 1); }
.rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .menu-panel, html.nav-open body { transition: none; }
}

/* ── mobile ───────────────────────────────────────────────── */

@media (max-width: 640px) {
  .masthead { padding-top: 24px; }
  .page { padding: 0 18px 90px; }
  .stage, .comp { grid-template-columns: 40px 1fr; gap: 0 12px; }
  table { display: block; overflow-x: auto; }
  .contact-cell { border-right: 0; border-bottom: 1px solid var(--rule-soft); }
  .contact-cell:last-child { border-bottom: 0; }
  .cadstrip img { height: 200px; }
}

.scrollhint { display: none; }

/* the flow diagram is unreadable when squeezed: let it scroll sideways instead */
@media (max-width: 780px) {
  figure.flow { overflow-x: auto; padding-bottom: 8px; }
  figure.flow svg { min-width: 660px; }
  figure.flow figcaption { position: sticky; left: 0; }
  /* the diagram is wider than the screen, so say so rather than hoping
     somebody discovers the horizontal scroll by accident */
  .scrollhint {
    display: block;
    margin-bottom: 6px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
  }
  .scrollhint::after { content: " \2192"; }
}

/* ── demo page: insight architecture ──────────────────────── */

.insight-arch {
  margin: 24px 0 28px;
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  padding: 24px 20px 20px;
}

.ia-harness {}
.ia-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.ia-harness > p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 0.94em;
}

.ia-tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}
.ia-tool {
  text-align: center;
  padding: 12px 8px 10px;
  border: 1px solid var(--rule);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.ia-tool span {
  display: block;
  font-weight: 400;
  font-size: 0.64rem;
  color: var(--ink-faint);
  margin-top: 4px;
  letter-spacing: 0.06em;
}
.ia-tool-vla {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.ia-tool-vla span { color: var(--accent); opacity: 0.7; }

@media (max-width: 640px) {
  .ia-tools { grid-template-columns: repeat(2, 1fr); }
}

/* ── demo page: timeline ──────────────────────────────────── */

.timeline {
  position: relative;
  margin: 32px 0 40px;
  padding-left: 36px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--rule-soft);
}

.tl-item {
  position: relative;
  padding: 0 0 32px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 0.9, 0.3, 1);
}
.tl-item.visible { opacity: 1; transform: none; }
.tl-item:last-child { padding-bottom: 0; }

.tl-marker {
  position: absolute;
  left: -36px;
  top: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--rule);
  background: var(--paper);
  transition: border-color 0.3s, background 0.3s;
}
.tl-item.done .tl-marker {
  border-color: var(--accent);
  background: var(--accent);
}
.tl-item.done .tl-marker::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 6px;
  width: 6px;
  height: 10px;
  border: solid var(--paper);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.tl-item.active .tl-marker {
  border-color: var(--accent);
  background: var(--paper);
  box-shadow: 0 0 0 4px var(--accent-soft);
  animation: tl-pulse 2s ease-in-out infinite;
}
.tl-item.upcoming .tl-marker {
  border-color: var(--rule);
  background: var(--paper);
}

@keyframes tl-pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--accent-soft); }
  50% { box-shadow: 0 0 0 8px transparent; }
}

.tl-content h2 {
  margin: 0 0 6px;
  font-size: 1.06rem;
  font-weight: 650;
  letter-spacing: -0.005em;
}
.tl-content p { margin: 0 0 8px; color: var(--ink-soft); }
.tl-status {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 2px 8px;
  margin-bottom: 8px;
  border: 1px solid var(--rule);
  color: var(--ink-faint);
}
.tl-item.done .tl-status { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.tl-item.active .tl-status { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); animation: tl-pulse 2s ease-in-out infinite; }
.tl-item.upcoming .tl-status { border-color: var(--rule); color: var(--ink-faint); }

.tl-evidence {
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--ink-faint);
  margin-top: 4px;
}

/* ── demo page: stats highlight ───────────────────────────── */

.demo-highlight {
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  padding: 24px 20px;
  margin: 28px 0 30px;
}

.demo-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  text-align: center;
}

.demo-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ds-value {
  font-family: var(--display);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
}
.ds-label {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ── demo page: pipeline detail ───────────────────────────── */

.pipeline-detail {
  margin: 28px 0 10px;
  border-top: 1px solid var(--ink);
}

.pd-stage {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 0 20px;
  border-bottom: 1px solid var(--rule-soft);
  padding: 24px 0 22px;
}
.pd-stage:last-child { border-bottom: 1px solid var(--ink); }

.pd-num {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
  padding-top: 1px;
}
.pd-body { min-width: 0; }
.pd-body h2 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 650;
  letter-spacing: -0.005em;
}
.pd-body h3 {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 16px 0 6px;
}
.pd-body h3:first-of-type { margin-top: 0; }
.pd-body p { margin: 0 0 8px; color: var(--ink-soft); }

@media (max-width: 640px) {
  .timeline { padding-left: 30px; }
  .timeline::before { left: 8px; }
  .tl-marker { left: -30px; width: 18px; height: 18px; }
  .tl-item.done .tl-marker::after { top: 3px; left: 5px; width: 5px; height: 8px; }
  .pd-stage { grid-template-columns: 40px 1fr; gap: 0 12px; }
  .demo-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .tl-item { opacity: 1; transform: none; transition: none; }
  .tl-item.active .tl-marker { animation: none; }
  .tl-item.active .tl-status { animation: none; }
}

/* ── print ────────────────────────────────────────────────── */

@media print {
  body::before, .float-controls, .menu-btn, .menu-panel, .hero-actions, .play { display: none !important; }
  html.nav-open body { padding-left: 0 !important; }
  html, body { background: #fff; color: #000; }
  .page { max-width: 100%; padding: 0; }
  .rv { opacity: 1; transform: none; }
  section.sec { margin-top: 40px; break-inside: avoid-page; }
  figure, .stage, .comp { break-inside: avoid; }
  a { text-decoration: none; color: #000; }
}