/* ============================================================
   JONATHAN EARP — PROJECTS
   "ORYZO" dark-studio system (per DESIGN.md)
   Warm near-black canvas · warm cream foreground ·
   burnt-sienna hairline accent · one typeface · zero shadows.
   SHARED BASE block is identical across all sites.
   ============================================================ */


/* ---------- TOKENS ---------- */
:root {
  --bg: #100904;
  --fg: #ffedd7;
  --cream: #ffedd7;
  --fg-soft: #6c5f51;
  --line: #40372e;
  --cork: #382416;
  --accent: #dc5000;

  --font: "Plus Jakarta Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  --t-caption: 10px;
  --t-body: 14px;
  --t-sub: 18px;
  --t-h-sm: 24px;
  --t-h: 29px;
  --t-h-lg: 41px;
  --t-display: 51px;

  --section-gap: clamp(68px, 11vw, 120px);
  --gut: clamp(20px, 5vw, 45px);
  --header-h: 60px;

  --ease: ease;
  --t-fast: 0.2s ease;
  --t-base: 0.3s ease;
}

html[data-theme="light"] {
  --bg: #ece1cf;
  --fg: #241a0f;
  --fg-soft: #6f6152;
  --line: #c7b69a;
  --cork: #382416;
  --accent: #c2470a;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  font-size: var(--t-body);
  line-height: 1.33;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
}
a { color: inherit; text-decoration: none; }
img, video, canvas { display: block; max-width: 100%; }
::selection { background: var(--accent); color: var(--cream); }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 3px; }

/* ---------- UTILITIES ---------- */
.wrap { width: 100%; padding-inline: var(--gut); }
.mono { font-size: var(--t-caption); text-transform: uppercase; line-height: 1.2; font-weight: 400; }
.divider { border: 0; border-top: 1px dashed var(--line); width: 100%; }

.vlabel {
  position: fixed; right: 6px; top: 50%; z-index: 50;
  transform: translateY(-50%) rotate(90deg); transform-origin: right center;
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg);
  white-space: nowrap; pointer-events: none; opacity: 0.75;
}
.scroll-prompt {
  position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg);
  transition: opacity var(--t-base);
}
.scroll-prompt .chev {
  width: 10px; height: 10px;
  border-right: 1px solid var(--fg); border-bottom: 1px solid var(--fg);
  transform: rotate(45deg); animation: bob 1.8s var(--ease) infinite;
}
@keyframes bob { 0%,100%{transform:rotate(45deg) translate(0,0)} 50%{transform:rotate(45deg) translate(2px,2px)} }
body.scrolled .scroll-prompt { opacity: 0; pointer-events: none; }

/* ---------- BUTTONS ---------- */
.btn-cork {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--cork); color: var(--cream); border: 1px solid transparent;
  border-radius: 36px; padding: 14.4px 24px; font-size: var(--t-body); font-weight: 400;
  cursor: pointer; transition: border-color var(--t-base), opacity var(--t-base);
}
.btn-cork:hover { border-color: var(--accent); }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--fg); border: 1px solid var(--fg);
  border-radius: 22.5px; padding: 7.5px 16px; font-size: var(--t-body); font-weight: 400;
  cursor: pointer; transition: border-color var(--t-base), color var(--t-base);
}
.btn-ghost:hover { border-color: var(--accent); }
.btn-flat {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--fg); border-bottom: 1px solid var(--fg);
  padding: 0 0 1px; font-size: var(--t-body); cursor: pointer; transition: border-color var(--t-fast);
}
.btn-flat:hover { border-color: var(--accent); }
.tlink { color: inherit; border-bottom: 1px solid var(--accent); transition: opacity var(--t-fast); }
.tlink:hover { opacity: 0.7; }

/* ---------- TOP BAR ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 100;
  display: flex; align-items: center; background: transparent;
  border-bottom: 1px solid transparent; transition: background var(--t-base), border-color var(--t-base);
}
body.scrolled .topbar { background: var(--bg); border-bottom: 1px solid var(--line); }
.topbar__inner {
  width: 100%; padding-inline: var(--gut);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: inline-flex; align-items: baseline; gap: 8px; font-size: 15px; font-weight: 500; }
.brand__crumb { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); font-weight: 400; }
.topnav { display: flex; align-items: center; gap: 24px; }
.topnav__link {
  font-size: 12px; text-transform: uppercase; color: var(--fg);
  position: relative; padding-bottom: 2px; transition: color var(--t-fast);
}
.topnav__link::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--accent); transition: width var(--t-base);
}
.topnav__link:hover::after { width: 100%; }
.theme-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--fg); border: 1px solid var(--fg);
  border-radius: 22.5px; padding: 6px 14px; font-size: 12px; text-transform: uppercase;
  cursor: pointer; transition: border-color var(--t-base);
}
.theme-toggle:hover { border-color: var(--accent); }
.theme-toggle__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.theme-toggle__label::after { content: "Light"; }
html[data-theme="light"] .theme-toggle__label::after { content: "Dark"; }
.stagger span {
  display: inline-block; opacity: 0; transform: translateY(6px);
  animation: letterIn 0.4s var(--ease) forwards; animation-delay: calc(var(--ci, 0) * 28ms + 0.1s);
}
.stagger span.sp { width: 0.32em; }
@keyframes letterIn { to { opacity: 1; transform: none; } }

/* ---------- REVEAL ---------- */
html.js [data-reveal] {
  opacity: 0; transform: translateY(8px);
  transition: opacity var(--t-base), transform 0.25s var(--ease);
  transition-delay: calc(var(--i, 0) * 60ms);
}
html.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html.js [data-reveal] { opacity: 1; transform: none; }
  .stagger span { opacity: 1; transform: none; animation: none; }
}

/* ---------- FOOTER ---------- */
.foot { border-top: 1px dashed var(--line); margin-top: var(--section-gap); }
.foot__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr auto; gap: 41px; padding: 68px 0 31px; }
.foot__big { font-size: var(--t-h-lg); line-height: 1; font-weight: 500; }
.foot__col h4 { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); margin-bottom: 18px; font-weight: 400; }
.foot__col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.foot__col a { font-size: var(--t-body); color: var(--fg); width: max-content; border-bottom: 1px solid transparent; transition: border-color var(--t-fast); }
.foot__col a:hover { border-bottom-color: var(--accent); }
.to-top { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg); align-self: start; }
.to-top:hover { color: var(--accent); }
.foot__bar {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
  padding: 18px 0 31px; border-top: 1px dashed var(--line);
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
}

/* ============================================================
   END SHARED BASE — projects-specific below
   ============================================================ */

main { padding-top: 0; }

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 78svh; display: flex; flex-direction: column;
  justify-content: flex-end; gap: 31px; overflow: hidden;
  /* padding-block, NOT the padding shorthand — the shorthand would reset
     .wrap's padding-inline and bleed the hero copy off both edges. */
  padding-block: calc(var(--header-h) + 68px) 68px;
}
.hero #topo { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero__eyebrow, .hero__title, .hero__lead, .hero .metastrip, .hero .scroll-prompt,
.hero__actions { position: relative; z-index: 1; }
.hero__eyebrow { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--fg); }
.hero__eyebrow .dot { color: var(--accent); }
.hero__title { font-size: clamp(34px, 6vw, var(--t-display)); line-height: 0.9; font-weight: 500; }
.hero__lead {
  align-self: flex-end; text-align: right; max-width: 46ch;
  font-size: var(--t-sub); line-height: 1.33; color: var(--fg);
}
.hero__lead b { color: var(--accent); font-weight: 500; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.metastrip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px dashed var(--line); }
.metastrip__cell { padding: 18px 18px 0 0; }
.metastrip__cell + .metastrip__cell { border-left: 1px dashed var(--line); padding-left: 18px; }
.metastrip__k { display: block; font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); margin-bottom: 8px; }
.metastrip__v { font-size: var(--t-body); font-weight: 500; }

/* ---------- SECTION HEADER ---------- */
.shead {
  display: flex; align-items: baseline; gap: 16px;
  padding-bottom: 18px; border-bottom: 1px dashed var(--line); margin-bottom: 41px;
}
.shead__no { font-size: var(--t-caption); color: var(--accent); }
.shead__title { font-size: var(--t-h-sm); font-weight: 500; text-transform: uppercase; }
.shead__meta { margin-left: auto; font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); text-align: right; }

.section { padding-top: var(--section-gap); }

/* ============================================================
   PROJECT INDEX — numbered rows, dashed rules, no cards
   ============================================================ */
.plist { border-top: 1px dashed var(--line); }

.prow {
  display: grid; grid-template-columns: 68px 1fr 300px auto;
  gap: 24px; align-items: start;
  padding: 31px 0; border-bottom: 1px dashed var(--line);
  transition: color var(--t-base);
}
a.prow:hover { color: var(--fg); }
a.prow:hover .prow__title { color: var(--accent); }
a.prow:hover .prow__go { color: var(--accent); transform: translateX(3px); }

.prow__no { font-size: var(--t-caption); color: var(--accent); padding-top: 6px; }
.prow__title { font-size: var(--t-h); line-height: 1; font-weight: 500; text-transform: uppercase; transition: color var(--t-base); }
.prow__desc { margin-top: 14px; font-size: var(--t-body); line-height: 1.5; color: var(--fg-soft); max-width: 58ch; }
.prow__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.prow__tags span {
  font-size: var(--t-caption); text-transform: uppercase;
  border: 1px solid var(--line); padding: 4px 8px; color: var(--fg-soft);
}
.prow__stats { display: flex; flex-direction: column; gap: 14px; padding-top: 4px; }
.prow__stat { display: flex; align-items: baseline; gap: 10px; }
.prow__stat b { font-size: var(--t-sub); font-weight: 500; min-width: 92px; }
.prow__stat span { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); line-height: 1.3; }
.prow__go { font-size: var(--t-sub); padding-top: 4px; transition: color var(--t-base), transform var(--t-base); }

/* status pill on a row that is not yet clickable */
.prow--soon { opacity: 0.55; }
.prow--soon .prow__go { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }

/* ---------- BUILD LOG (short-form notes on the index) ---------- */
.log { border-top: 1px dashed var(--line); margin-top: 6px; }
.log__row { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 14px 0; border-bottom: 1px dashed var(--line); font-size: var(--t-body); }
.log__k { font-size: var(--t-caption); text-transform: uppercase; color: var(--accent); }
.log__v { color: var(--fg-soft); line-height: 1.5; }
.log__v strong { color: var(--fg); font-weight: 500; }

/* ============================================================
   CASE STUDY
   ============================================================ */

/* sticky chapter nav */
.chapnav {
  position: sticky; top: var(--header-h); z-index: 90;
  display: flex; gap: clamp(14px, 2.5vw, 28px);
  background: var(--bg); border-bottom: 1px dashed var(--line);
  padding: 14px 0; margin-top: 41px;
  overflow-x: auto; scrollbar-width: none;
  transition: background 0.4s var(--ease);
}
.chapnav::-webkit-scrollbar { display: none; }
.chapnav a {
  display: inline-flex; align-items: baseline; gap: 6px;
  font-size: var(--t-caption); text-transform: uppercase;
  color: var(--fg-soft); white-space: nowrap; transition: color var(--t-fast);
}
.chapnav a span { color: var(--fg-soft); transition: color var(--t-fast); }
.chapnav a:hover { color: var(--fg); }
.chapnav a.is-active { color: var(--fg); }
.chapnav a.is-active span { color: var(--accent); }

/* stat row — numbers on dashed rules, no boxes */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin: 41px 0; }
.stat { padding: 24px 18px 24px 0; }
.stat + .stat { border-left: 1px dashed var(--line); padding-left: 18px; }
.stat__n { font-size: var(--t-h-lg); line-height: 1; font-weight: 500; }
.stat__n small { font-size: var(--t-sub); color: var(--fg-soft); }
.stat__l { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); margin-top: 10px; line-height: 1.4; }
.stats--3 { grid-template-columns: repeat(3, 1fr); }

/* tl;dr strip */
.tldr {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin-top: 41px;
}
.tldr > div { padding: 24px 18px 24px 0; }
.tldr > div + div { border-left: 1px dashed var(--line); padding-left: 18px; }
.tldr__k { display: block; font-size: var(--t-caption); text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.tldr p { font-size: var(--t-body); color: var(--fg); line-height: 1.5; }

/* content block */
.block {
  display: grid; grid-template-columns: 68px 1fr; gap: 24px;
  padding: 41px 0; border-top: 1px dashed var(--line);
  scroll-margin-top: calc(var(--header-h) + 52px);
}
.block__no { font-size: var(--t-caption); color: var(--accent); }
.block__body { max-width: none; }
.block__body > p, .callout { max-width: 74ch; }
.block__h { font-size: var(--t-h); line-height: 1.09; font-weight: 500; margin-bottom: 18px; text-transform: uppercase; }
.block__sub { font-size: var(--t-sub); font-weight: 500; margin: 31px 0 12px; }
.block__body p { font-size: var(--t-body); color: var(--fg); line-height: 1.5; margin-bottom: 14px; }
.block__body p strong { font-weight: 500; }
.block__body p em { font-style: italic; color: var(--accent); }
.block__body code {
  font-family: var(--font); font-size: 0.92em; color: var(--accent);
  border-bottom: 1px solid var(--line); padding: 0 1px;
}
.lede { font-size: var(--t-sub) !important; line-height: 1.4 !important; }

/* callout — hairline sienna left rule, no fill */
.callout { border-left: 1px solid var(--accent); padding: 4px 0 4px 18px; margin: 24px 0; font-size: var(--t-body); color: var(--fg); line-height: 1.5; }
.callout strong { color: var(--accent); font-weight: 500; }
.callout em { font-style: italic; }

/* dashed list */
.dlist { list-style: none; color: var(--fg-soft); font-size: var(--t-body); max-width: 74ch; }
.dlist li { position: relative; padding-left: 18px; margin-bottom: 10px; line-height: 1.5; }
.dlist li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
.dlist li strong { color: var(--fg); font-weight: 500; }

/* ---------- PIPELINE — seven stages, dashed columns ---------- */
.pipe {
  display: grid; grid-template-columns: repeat(7, 1fr);
  border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin: 24px 0;
}
.pipe__s { padding: 20px 12px 20px 0; }
.pipe__s + .pipe__s { border-left: 1px dashed var(--line); padding-left: 12px; }
.pipe__n { font-size: var(--t-caption); color: var(--accent); margin-bottom: 10px; }
.pipe__h { font-size: var(--t-body); font-weight: 500; margin-bottom: 6px; text-transform: uppercase; }
.pipe__p { font-size: var(--t-caption); color: var(--fg-soft); line-height: 1.5; text-transform: none; }

/* ---------- EQUATION BLOCK — the chunk-gating trick ---------- */
.eqs { border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin: 24px 0; }
.eqrow {
  display: grid; grid-template-columns: 200px 1fr; gap: 24px; align-items: baseline;
  padding: 16px 0; 
}
.eqrow + .eqrow { border-top: 1px dashed var(--line); }
.eqrow__e {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: var(--t-body); color: var(--accent); white-space: nowrap;
}
.eqrow__d { font-size: var(--t-body); color: var(--fg-soft); line-height: 1.5; }
.eqrow__d strong { color: var(--fg); font-weight: 500; }

/* ---------- DATA TABLE — dashed rules, no fills ---------- */
.dtable { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: var(--t-body); }
.dtable caption {
  text-align: left; font-size: var(--t-caption); text-transform: uppercase;
  color: var(--fg-soft); padding-bottom: 12px; line-height: 1.5;
}
.dtable th, .dtable td { text-align: left; padding: 12px 18px 12px 0; border-bottom: 1px dashed var(--line); vertical-align: baseline; }
.dtable thead th {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
  font-weight: 400; border-bottom: 1px dashed var(--line);
}
.dtable td.num, .dtable th.num { text-align: right; padding-right: 0; font-variant-numeric: tabular-nums; }
.dtable tbody td { color: var(--fg-soft); }
.dtable tbody td:first-child { color: var(--fg); }
.dtable tbody tr.is-key td { color: var(--fg); }
.dtable tbody tr.is-key td strong { color: var(--accent); font-weight: 500; }
.dtable .tag {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--accent);
  border: 1px solid var(--accent); padding: 1px 6px; margin-left: 8px; white-space: nowrap;
}

/* ---------- FIGURES (inline SVG charts) ---------- */
.fig { margin: 31px 0 0; }
.fig svg { width: 100%; height: auto; display: block; overflow: visible; }
.fig figcaption {
  padding-top: 12px; font-size: var(--t-caption); text-transform: uppercase;
  color: var(--fg-soft); line-height: 1.5; max-width: 82ch;
}
.fig figcaption strong { color: var(--fg); font-weight: 500; }

/* chart primitives — read the live theme */
.c-axis { stroke: var(--line); stroke-width: 1; }
.c-grid { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }
.c-bar { fill: var(--fg-soft); }
.c-bar--hi { fill: var(--accent); }
.c-line { fill: none; stroke: var(--accent); stroke-width: 1.5; }
.c-area { fill: var(--accent); opacity: 0.10; stroke: none; }
.c-ref { fill: none; stroke: var(--fg-soft); stroke-width: 1; stroke-dasharray: 3 4; }
.c-dot { fill: var(--fg-soft); }
.c-dot--hi { fill: var(--accent); }
.c-band { fill: var(--fg-soft); opacity: 0.12; }
.c-t {
  fill: var(--fg-soft); font-family: var(--font); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.02em;
}
.c-t--fg { fill: var(--fg); }
.c-t--acc { fill: var(--accent); }
.c-t--n { font-size: 11px; font-variant-numeric: tabular-nums; text-transform: none; }
.c-legend { display: flex; flex-wrap: wrap; gap: 8px 20px; padding-top: 14px; font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }
.c-legend i { display: inline-block; width: 10px; height: 2px; margin-right: 7px; vertical-align: middle; background: var(--fg-soft); }
.c-legend i.acc { background: var(--accent); }

/* ---------- PREV / NEXT ---------- */
.pnav {
  display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap;
  border-top: 1px dashed var(--line); margin-top: var(--section-gap); padding-top: 31px;
}
.pnav__side { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }
.pnav__t { display: block; font-size: var(--t-h-sm); font-weight: 500; color: var(--fg); margin-top: 8px; text-transform: uppercase; }
.pnav a:hover .pnav__t { color: var(--accent); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1000px) {
  .pipe { grid-template-columns: repeat(4, 1fr); }
  .pipe__s:nth-child(4n + 1) { border-left: 0; padding-left: 0; }
  .pipe__s:nth-child(-n + 4) { border-bottom: 1px dashed var(--line); }
  .prow { grid-template-columns: 44px 1fr 220px auto; gap: 18px; }
}
@media (max-width: 900px) {
  .stats, .stats--3 { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat:nth-child(-n + 2) { border-bottom: 1px dashed var(--line); }
  .metastrip { grid-template-columns: 1fr 1fr; }
  .metastrip__cell:nth-child(odd) { border-left: 0; padding-left: 0; }
  .metastrip__cell:nth-child(-n + 2) { padding-bottom: 18px; }
  .foot__grid { grid-template-columns: 1fr 1fr; }
  .foot__big { grid-column: 1 / -1; }
  .hero__lead { text-align: left; align-self: flex-start; }
  .vlabel { display: none; }
  .prow { grid-template-columns: 44px 1fr auto; }
  .prow__stats { grid-column: 2 / 3; flex-direction: row; flex-wrap: wrap; gap: 24px; }
}
@media (max-width: 620px) {
  .topnav__link--hide { display: none; }
  .block { grid-template-columns: 1fr; gap: 8px; }
  .tldr { grid-template-columns: 1fr; }
  .tldr > div { padding: 18px 0; }
  .tldr > div + div { border-left: 0; border-top: 1px dashed var(--line); padding-left: 0; }
  .stats, .stats--3 { grid-template-columns: 1fr; }
  .stat { border-left: 0 !important; padding-left: 0 !important; border-bottom: 1px dashed var(--line); }
  .metastrip { grid-template-columns: 1fr; }
  .metastrip__cell + .metastrip__cell { border-left: 0; padding-left: 0; }
  .pipe { grid-template-columns: 1fr 1fr; }
  .pipe__s:nth-child(odd) { border-left: 0; padding-left: 0; }
  .pipe__s { border-bottom: 1px dashed var(--line); }
  .eqrow { grid-template-columns: 1fr; gap: 8px; }
  .log__row { grid-template-columns: 1fr; gap: 4px; }
  .prow { grid-template-columns: 1fr; gap: 12px; }
  .prow__no { padding-top: 0; }
  .prow__stats { grid-column: 1 / -1; }
  .prow__go { display: none; }
  .dtable { font-size: 13px; }
  .dtable th, .dtable td { padding-right: 12px; }
}

/* ---------- CHUNK-GATING DIAGRAM ---------- */
.chunks { border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line); margin: 24px 0; }
.chunks__slider {
  display: flex; align-items: baseline; gap: 12px;
  padding: 16px 0; border-bottom: 1px dashed var(--line);
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
}
.chunks__slider b { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: var(--t-body); color: var(--accent); text-transform: none; }
.chunks__grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.chunk { padding: 20px 18px 20px 0; }
.chunk + .chunk { border-left: 1px dashed var(--line); padding-left: 18px; }
.chunk__k { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); margin-bottom: 12px; }
.chunk__k b { color: var(--fg); font-weight: 500; }
.chunk__ticks { display: flex; gap: 3px; height: 26px; align-items: flex-end; margin-bottom: 12px; }
.chunk__ticks i { flex: 1; height: 10px; background: var(--fg-soft); opacity: 0.45; }
.chunk__state {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
  border-top: 1px dashed var(--line); padding-top: 10px; line-height: 1.5;
}
/* the one chunk the slider is currently inside */
.chunk--on .chunk__k b { color: var(--accent); }
.chunk--on .chunk__ticks i { background: var(--accent); opacity: 1; height: 26px; }
.chunk--on .chunk__state { color: var(--fg); }
.chunk--on .chunk__state b { color: var(--accent); font-weight: 500; }
@media (max-width: 620px) {
  .chunks__grid { grid-template-columns: 1fr; }
  .chunk + .chunk { border-left: 0; border-top: 1px dashed var(--line); padding-left: 0; }
}

/* ============================================================
   INTERACTIVE DEMOS
   Same idiom as everything else: dashed rules, no cards, accent
   used as a hairline and for the one thing you should look at.
   ============================================================ */
.demo {
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
  margin: 31px 0;
  padding: 20px 0 24px;
}
.demo__head {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  margin-bottom: 18px;
}
.demo__k {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--accent);
}
.demo__t { font-size: var(--t-sub); font-weight: 500; }
.demo__hint {
  margin-left: auto; font-size: var(--t-caption); text-transform: uppercase;
  color: var(--fg-soft);
}

/* --- controls --- */
.demo__ctl { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 16px; }
.sbtn {
  font-family: var(--font);
  font-size: var(--t-caption); text-transform: uppercase;
  color: var(--fg-soft); background: transparent;
  border: 1px solid var(--line); border-radius: 22.5px;
  padding: 6px 13px; cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.sbtn:hover { color: var(--fg); border-color: var(--fg-soft); }
.sbtn.is-on { color: var(--accent); border-color: var(--accent); }
.sbtn__n { color: var(--fg-soft); margin-right: 6px; }
.sbtn.is-on .sbtn__n { color: var(--accent); }

.srange { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.srange__k {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
  white-space: nowrap;
}
.srange__v {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: var(--t-body); color: var(--accent); min-width: 6ch;
}
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  flex: 1; min-width: 140px; max-width: 340px;
  height: 18px; background: transparent; cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 1px; background: var(--line);
}
input[type="range"]::-moz-range-track { height: 1px; background: var(--line); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--accent); border: 0; margin-top: -6px;
}
input[type="range"]::-moz-range-thumb {
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--accent); border: 0;
}
input[type="range"]:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }

.demo__read {
  display: flex; flex-wrap: wrap; gap: 8px 28px; align-items: baseline;
  padding-top: 14px; margin-top: 14px; border-top: 1px dashed var(--line);
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
}
.demo__read b { font-size: var(--t-body); color: var(--fg); font-weight: 500; text-transform: none; }
.demo__note { flex-basis: 100%; color: var(--fg-soft); text-transform: none; font-size: var(--t-body); line-height: 1.5; }

/* --- trace --- */
.demo__canvas {
  width: 100%; height: 300px; display: block;
  border: 1px dashed var(--line);
}
.demo__eps { margin-top: 14px; }
.demo__eps[hidden] { display: none; }

/* --- chunks (now driven by the slider) --- */
.chunk__ticks i.is-now { background: var(--fg) !important; height: 26px !important; }
.chunk__vals {
  display: flex; gap: 18px; flex-wrap: wrap;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px; color: var(--fg-soft); margin-bottom: 10px;
}
.chunk__vals b { color: var(--fg-soft); font-weight: 400; }
.chunk--on .chunk__vals b { color: var(--accent); }

/* --- settle --- */
.settle__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.settle__cell figcaption {
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
  padding-bottom: 8px;
}
.settle__cell canvas {
  width: 100%; height: 190px; display: block; border: 1px dashed var(--line);
}
.demo--settle.is-bad [data-canvas="shot"] { border-color: var(--accent); }

.settle__track {
  position: relative; height: 26px; margin-top: 18px;
  border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line);
}
/* anything captured left of --done is missing linework */
.settle__track::before {
  content: ""; position: absolute; top: 0; bottom: 0;
  left: 0; width: var(--done, 30%);
  background: var(--fg-soft); opacity: 0.16;
  border-right: 1px dashed var(--line);
}
.settle__track::after {
  content: "update still in progress";
  position: absolute; left: var(--done, 30%); top: 7px; margin-left: 8px;
  font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft);
  white-space: nowrap;
}
.settle__mark {
  position: absolute; top: -4px; bottom: -4px; width: 1px;
  background: var(--accent);
  transition: left var(--t-base);
}
.settle__mark::after {
  content: "capture"; position: absolute; top: -14px; left: 4px;
  font-size: var(--t-caption); text-transform: uppercase; color: var(--accent);
}
.settle__verdict { padding-top: 16px; font-size: var(--t-body); line-height: 1.5; color: var(--fg-soft); }
.settle__verdict b { color: var(--fg); font-weight: 500; }
.demo--settle.is-bad .settle__verdict { color: var(--fg); }
.demo--settle.is-bad .settle__verdict b { color: var(--accent); }

/* --- timeline --- */
.tl__steps {
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr;
  border-top: 1px dashed var(--line); margin-bottom: 24px;
}
.tl__step {
  font-family: var(--font); text-align: left;
  background: transparent; border: 0; border-top: 2px solid transparent;
  margin-top: -1px; padding: 14px 10px 14px 0; cursor: pointer;
  color: var(--fg-soft); transition: color var(--t-fast), border-color var(--t-fast);
}
.tl__step:hover { color: var(--fg); }
.tl__step.is-done { border-top-color: var(--line); color: var(--fg-soft); }
.tl__step.is-on { border-top-color: var(--accent); color: var(--fg); }
.tl__vt { display: block; font-size: var(--t-caption); text-transform: uppercase; }
.tl__step.is-on .tl__vt { color: var(--accent); }
.tl__vn { display: block; font-size: var(--t-body); margin-top: 5px; line-height: 1.3; }

.tl__name { font-size: var(--t-sub); font-weight: 500; margin-bottom: 10px; }
.tl__blurb { font-size: var(--t-body); line-height: 1.5; color: var(--fg-soft); max-width: 74ch; margin-bottom: 24px; }

.tl__bars { display: grid; gap: 12px; }
.tl__bar { display: grid; grid-template-columns: 220px 1fr 110px; gap: 14px; align-items: center; }
.tl__bl { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }
.tl__btrack { height: 14px; background: transparent; border-bottom: 1px dashed var(--line); position: relative; }
.tl__btrack i {
  position: absolute; left: 0; bottom: 0; height: 14px;
  background: var(--fg-soft); transition: width 0.4s var(--ease), background 0.4s var(--ease);
}
.tl__btrack i.is-good { background: var(--accent); }
.tl__bv { font-size: var(--t-body); color: var(--fg); font-variant-numeric: tabular-nums; }

.tl__extra {
  display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap;
  margin-top: 18px; padding-top: 14px; border-top: 1px dashed var(--line);
}
.tl__extra[hidden] { display: none; }
.tl__ek { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }
.tl__ev { font-size: var(--t-sub); color: var(--accent); font-weight: 500; }
.tl__eo { font-size: var(--t-caption); text-transform: uppercase; color: var(--fg-soft); }

@media (max-width: 760px) {
  .settle__pair { grid-template-columns: 1fr; }
  .tl__steps { grid-auto-flow: row; grid-auto-columns: auto; }
  .tl__step { border-top: 0; border-left: 2px solid transparent; padding: 10px 0 10px 12px; margin-top: 0; }
  .tl__step.is-done { border-top-color: transparent; border-left-color: var(--line); }
  .tl__step.is-on { border-top-color: transparent; border-left-color: var(--accent); }
  .tl__bar { grid-template-columns: 1fr; gap: 4px; }
  .tl__bv { font-size: var(--t-caption); }
  .demo__canvas { height: 240px; }
  .demo__hint { margin-left: 0; flex-basis: 100%; }
}