/* Regnor Knowledge Docs - same palette and type as the main site (Atelier Zero tokens). */
@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600&family=Playfair+Display:ital,wght@0,500;0,600;1,400;1,500;1,600;1,700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --paper: #efe7d2; --paper-warm: #ece4cf; --paper-dark: #ddd2b6; --bone: #f7f1de;
  --ink: #15140f; --ink-soft: #2a2620; --ink-mute: #5a5448; --ink-faint: #8b8676;
  --coral: #ed6f5c; --coral-deep: #c9503e; --mustard: #e9b94a; --olive: #6e7448;
  --line: rgba(21,20,15,.16); --line-soft: rgba(21,20,15,.08);
  --serif: 'Playfair Display', 'Times New Roman', serif;
  --sans: 'Inter Tight', 'Inter', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --top: 124px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-padding-top: calc(var(--top) + 20px); }
body { background: var(--paper); color: var(--ink); font: 16px/1.65 var(--body); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; background: var(--ink); color: var(--bone); padding: 8px 12px; border-radius: 6px; }

/* header */
.top { position: sticky; top: 0; z-index: 40; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 1440px; margin: 0 auto; padding: 14px 32px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 16px var(--sans); letter-spacing: -.01em; }
.brand-mark { width: 34px; height: 34px; border-radius: 50%; background: var(--ink); color: var(--bone); display: grid; place-items: center; font: 800 12px var(--sans); letter-spacing: .02em; }
.brand-docs { font: italic 500 18px var(--serif); color: var(--coral-deep); padding-left: 10px; border-left: 1px solid var(--line); }
.search-btn { flex: 1; max-width: 420px; margin: 0 auto; display: flex; align-items: center; gap: 10px; background: var(--bone); border: 1px solid var(--line); border-radius: 999px; padding: 9px 14px; font: 500 14px var(--body); color: var(--ink-mute); cursor: pointer; }
.search-btn:hover { border-color: var(--ink-faint); }
.search-btn svg, .search-row svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; flex: none; }
.search-btn span { flex: 1; text-align: left; }
kbd { font: 500 11px var(--mono); border: 1px solid var(--line); border-radius: 5px; padding: 2px 6px; background: var(--paper); color: var(--ink-mute); }
.top-side { display: flex; align-items: center; gap: 16px; }
.top-link { font: 600 14px var(--sans); text-decoration: none; color: var(--ink-soft); }
.top-link:hover { color: var(--coral-deep); }
.top-cta { font: 700 14px var(--sans); text-decoration: none; background: var(--coral); color: var(--ink); padding: 9px 16px; border-radius: 999px; }
.top-cta:hover { background: var(--coral-deep); color: var(--bone); }
.menu-btn { display: none; background: none; border: 0; width: 34px; height: 34px; cursor: pointer; }
.menu-btn span { display: block; height: 2px; background: var(--ink); margin: 6px 6px; border-radius: 2px; }
.tabs { border-top: 1px solid var(--line-soft); }
.tabs-in { max-width: 1440px; margin: 0 auto; padding: 0 32px; display: flex; gap: 28px; overflow-x: auto; scrollbar-width: none; }
.tabs a { display: flex; align-items: center; gap: 7px; padding: 12px 0 11px; font: 600 14px var(--sans); color: var(--ink-mute); text-decoration: none; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; stroke-linecap: round; }
.tabs a:hover { color: var(--ink); }
.tabs a.on { color: var(--ink); border-bottom-color: var(--coral); }

/* layout */
.layout { max-width: 1440px; margin: 0 auto; display: grid; grid-template-columns: 270px minmax(0, 1fr) 230px; gap: 56px; padding: 0 32px; }
.sidebar { position: sticky; top: var(--top); align-self: start; max-height: calc(100vh - var(--top)); overflow-y: auto; padding: 32px 4px 48px 0; }
.sb-h { display: block; font: 700 11px var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin: 22px 0 8px 12px; }
.sb-h:first-child { margin-top: 0; }
.sidebar ul { list-style: none; }
.sidebar a { display: block; padding: 6px 12px; border-radius: 8px; font: 500 14.5px var(--body); color: var(--ink-soft); text-decoration: none; }
.sidebar a:hover { background: var(--paper-warm); color: var(--ink); }
.sidebar a.on { background: var(--bone); color: var(--ink); font-weight: 600; box-shadow: inset 3px 0 0 var(--coral); }
.content { padding: 40px 0 64px; min-width: 0; max-width: 760px; }
.crumb { font: 700 12px var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--coral-deep); }
.content h1 { font: 600 clamp(32px, 3.4vw, 46px)/1.1 var(--serif); letter-spacing: -.01em; margin: 10px 0 12px; }
.sub { font-size: 18px; color: var(--ink-mute); max-width: 60ch; padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.rail { position: sticky; top: var(--top); align-self: start; padding: 40px 0; }
.toc-h { display: block; font: 700 11px var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 10px; }
.toc ul { list-style: none; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 4px 0 4px 14px; margin-left: -1px; border-left: 2px solid transparent; font: 500 13.5px var(--body); color: var(--ink-mute); text-decoration: none; }
.toc li.l3 a { padding-left: 26px; font-size: 13px; }
.toc a:hover { color: var(--ink); }
.toc a.on { color: var(--ink); border-left-color: var(--coral); }

/* prose */
.prose { font-size: 16.5px; }
.prose h2 { font: 700 24px/1.25 var(--sans); letter-spacing: -.015em; margin: 42px 0 12px; }
.prose h3 { font: 700 19px/1.3 var(--sans); margin: 28px 0 8px; }
.prose p { margin: 0 0 14px; max-width: 68ch; color: var(--ink-soft); }
.prose ul, .prose ol:not(.steps) { margin: 0 0 16px 22px; color: var(--ink-soft); }
.prose li { margin: 5px 0; }
.prose a { color: var(--coral-deep); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.prose code { font: 13.5px var(--mono); background: var(--bone); border: 1px solid var(--line-soft); padding: 1px 6px; border-radius: 5px; word-break: break-all; }
.prose b { color: var(--ink); }
.shot { margin: 24px 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--bone); }
.shot img { display: block; width: 100%; height: 280px; object-fit: cover; }
.shot figcaption { font: 500 13px var(--body); color: var(--ink-mute); padding: 10px 14px; border-top: 1px solid var(--line-soft); }

.cardgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 18px 0 8px; }
.dcard { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 18px 44px 18px 18px; background: var(--bone); border: 1px solid var(--line); border-radius: 14px; text-decoration: none !important; transition: border-color .2s, transform .2s; }
.dcard b { font: 700 16px var(--sans); color: var(--ink); }
.dcard span { font-size: 14px; color: var(--ink-mute); line-height: 1.5; }
.dcard i { position: absolute; right: 16px; top: 16px; font-style: normal; color: var(--ink-faint); transition: transform .2s, color .2s; }
.dcard:hover { border-color: var(--coral); transform: translateY(-1px); }
.dcard:hover i { color: var(--coral-deep); transform: translateX(3px); }

.steps { list-style: none; counter-reset: s; margin: 16px 0 20px; }
.steps li { counter-increment: s; position: relative; padding: 0 0 18px 52px; display: flex; flex-direction: column; }
.steps li::before { content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 0; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; font: 700 12px var(--sans); color: var(--coral-deep); background: var(--bone); }
.steps li:not(:last-child)::after { content: ''; position: absolute; left: 17px; top: 38px; bottom: 4px; width: 1px; background: var(--line); }
.steps b { font: 700 16px var(--sans); }
.steps span { color: var(--ink-soft); font-size: 15.5px; }

.callout { display: flex; gap: 12px; padding: 14px 16px; border-radius: 12px; margin: 20px 0; border: 1px solid var(--line); background: var(--bone); font-size: 15px; }
.callout > b { flex: none; font: 700 11px/22px var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.callout.note > b { color: var(--olive); } .callout.tip > b { color: var(--coral-deep); }
.callout.warn { background: #f6ecd0; border-color: rgba(233,185,74,.55); } .callout.warn > b { color: #9a7417; }
.callout.check { border-color: rgba(110,116,72,.45); } .callout.check > b { color: var(--olive); }

.tablewrap { overflow-x: auto; margin: 16px 0 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--bone); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
th { text-align: left; font: 700 12px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); background: var(--paper-warm); padding: 10px 14px; border-bottom: 1px solid var(--line); }
td { padding: 11px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; color: var(--ink-soft); }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }

.log .entry { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.log .when { font: 600 13px var(--mono); color: var(--coral-deep); padding-top: 4px; }
.log h3 { margin-top: 0 !important; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 48px; }
.pg { display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; background: var(--paper-warm); }
.pg span { font: 600 12px var(--sans); color: var(--ink-faint); text-transform: uppercase; letter-spacing: .1em; }
.pg b { font: 700 15px var(--sans); }
.pg.next { text-align: right; }
.pg:hover { border-color: var(--coral); }
.dfoot { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-mute); }
.dfoot a { color: var(--coral-deep); }
.stamp { font: 500 12px var(--mono); }

/* search */
.search { position: fixed; inset: 0; z-index: 80; background: rgba(21,20,15,.38); display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; }
.search[hidden] { display: none; }
.search-box { width: 100%; max-width: 620px; background: var(--bone); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 30px 60px -30px rgba(21,20,15,.45); overflow: hidden; }
.search-row { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--ink-mute); }
.search-row input { flex: 1; border: 0; background: none; font: 500 17px var(--body); color: var(--ink); outline: none; }
.results { list-style: none; max-height: 56vh; overflow-y: auto; padding: 6px; }
.results a { display: block; padding: 10px 12px; border-radius: 10px; text-decoration: none; }
.results a.on, .results a:hover { background: var(--paper-warm); }
.results b { display: block; font: 700 15px var(--sans); }
.results small { display: block; font: 600 11px var(--sans); color: var(--coral-deep); letter-spacing: .08em; text-transform: uppercase; margin-bottom: 2px; }
.results span { display: block; font-size: 13.5px; color: var(--ink-mute); }
.results mark { background: rgba(233,185,74,.45); color: inherit; border-radius: 3px; }
.results .empty { padding: 18px 12px; color: var(--ink-mute); font-size: 14px; }

/* responsive */
@media (max-width: 1180px) { .layout { grid-template-columns: 250px minmax(0,1fr); } .rail { display: none; } }
@media (max-width: 860px) {
  :root { --top: 112px; }
  .top-in { padding: 12px 18px; gap: 12px; }
  .brand-name, .top-link, .search-btn span, .search-btn kbd { display: none; }
  .search-btn { flex: none; margin: 0 0 0 auto; padding: 9px; }
  .top-cta { padding: 8px 12px; font-size: 13px; }
  .menu-btn { display: block; }
  .tabs-in { padding: 0 18px; gap: 20px; }
  .layout { grid-template-columns: 1fr; padding: 0 18px; gap: 0; }
  .sidebar { position: fixed; top: var(--top); left: 0; bottom: 0; height: calc(100vh - var(--top)); width: min(320px, 86vw); max-height: none; z-index: 30; background: var(--paper); border-right: 1px solid var(--line); padding: 22px 16px; transform: translateX(-102%); transition: transform .25s ease; }
  body.menu-open .sidebar { transform: none; box-shadow: 20px 0 40px -20px rgba(21,20,15,.35); }
  .content { padding-top: 28px; }
  .cardgrid { grid-template-columns: 1fr; }
  .log .entry { grid-template-columns: 1fr; gap: 6px; }
  td:first-child { white-space: normal; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* =====================================================================
   2026-10-15 v2: illustrated heroes, code-drawn diagrams, motion
   ===================================================================== */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out .28s cubic-bezier(.4,0,.2,1) both; }
::view-transition-new(root) { animation: vt-in .42s cubic-bezier(.2,.7,.2,1) both; }
@keyframes vt-out { to { opacity: 0; transform: translateY(-6px); } }
@keyframes vt-in { from { opacity: 0; transform: translateY(10px); } }
.top, .sidebar { view-transition-name: none; }
.top { view-transition-name: docs-top; }
.sidebar { view-transition-name: docs-side; }

body::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .5;
  background-image: radial-gradient(rgba(21,20,15,.05) 1px, transparent 1px); background-size: 3px 3px; mix-blend-mode: multiply; }
.layout { position: relative; z-index: 1; }
.progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60; pointer-events: none; }
.progress i { display: block; height: 100%; width: 100%; transform-origin: 0 50%; transform: scaleX(var(--p, 0)); background: linear-gradient(90deg, var(--coral), var(--mustard)); }

/* hero band */
.hero { margin: 28px 0 10px; }
.hero-rule { display: flex; justify-content: space-between; align-items: center; gap: 14px; font: 600 11.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-mute); padding-bottom: 14px; border-bottom: 1px solid var(--ink); }
.hero-rule .roman { font: italic 600 17px var(--serif); color: var(--coral-deep); letter-spacing: 0; text-transform: none; }
.hero-rule i { font-style: normal; color: var(--coral); margin: 0 9px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(220px, .85fr); gap: 34px; align-items: center; padding: 26px 0 28px; border-bottom: 1px solid var(--line); }
.hero .crumb { display: inline-block; }
.content .hero h1 { font: 600 clamp(34px, 3.7vw, 54px)/1.04 var(--serif); letter-spacing: -.015em; margin: 12px 0 14px; }
.hero h1 em { font-style: italic; color: var(--coral-deep); }
.hero h1 .dot { color: var(--coral); }
.hero .sub { border: 0; padding: 0; margin: 0 0 16px; }
.hero-meta { display: flex; align-items: center; gap: 10px; font: 500 12.5px var(--mono); color: var(--ink-faint); }
.dotsep { width: 4px; height: 4px; border-radius: 50%; background: var(--ink-faint); }
.hero-art { position: relative; aspect-ratio: 1 / 1; max-height: 300px; justify-self: end; width: 100%; max-width: 300px; border-radius: 200px 200px 16px 16px; overflow: hidden; background: var(--paper-dark); box-shadow: 0 30px 60px -32px rgba(21,20,15,.45); }
.hero-art img { width: 100%; height: 112%; object-fit: cover; display: block; transform: translateY(var(--par, 0px)) scale(1.04); transition: transform .1s linear; }
.hero-art .corner { position: absolute; width: 18px; height: 18px; border: 1.5px solid var(--bone); z-index: 2; }
.hero-art .corner.tl { top: 42px; left: 14px; border-right: 0; border-bottom: 0; }
.hero-art .corner.br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; }
.hero-tag { position: absolute; left: 14px; bottom: 12px; z-index: 2; font: 600 10.5px var(--mono); letter-spacing: .08em; color: var(--bone); background: rgba(21,20,15,.55); padding: 4px 8px; border-radius: 999px; backdrop-filter: blur(4px); }
.logo-plate { width: 100%; height: 100%; display: grid; place-items: center; background:
  radial-gradient(circle at 50% 42%, var(--bone) 0 34%, transparent 35%), repeating-radial-gradient(circle at 50% 42%, rgba(21,20,15,.07) 0 1px, transparent 1px 22px), var(--paper-warm); }
.logo-plate span { display: flex; gap: 14px; transform: translateY(-8%); animation: float 6s ease-in-out infinite; }
.logo-plate svg { width: 84px; height: 84px; filter: drop-shadow(0 10px 18px rgba(21,20,15,.18)); }
@keyframes float { 50% { transform: translateY(-12%); } }

/* entrance + reveal */
.js .hero-copy > *, .js .hero-art { opacity: 0; transform: translateY(14px); }
.js .ready .hero-copy > *, .js .ready .hero-art { opacity: 1; transform: none; transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.js .ready .hero-copy > :nth-child(2) { transition-delay: .06s; } .js .ready .hero-copy > :nth-child(3) { transition-delay: .12s; }
.js .ready .hero-copy > :nth-child(4) { transition-delay: .18s; } .js .ready .hero-art { transition-delay: .1s; }
.js [data-rv] { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.js [data-rv].in { opacity: 1; transform: none; }

/* prose accents */
.prose h2 { position: relative; padding-top: 10px; }
.prose h2::before { content: ''; position: absolute; left: 0; top: 0; width: 28px; height: 2px; background: var(--coral); }
.prose a:not(.dcard) { background-image: linear-gradient(var(--coral), var(--coral)); background-size: 0 1px; background-repeat: no-repeat; background-position: 0 100%; transition: background-size .3s; }
.prose a:not(.dcard):hover { background-size: 100% 1px; }
.dcard { overflow: hidden; }
.dcard::after { content: ''; position: absolute; inset: auto -40% -60% auto; width: 140px; height: 140px; border-radius: 50%; background: radial-gradient(circle, rgba(237,111,92,.22), transparent 70%); transform: scale(.4); opacity: 0; transition: transform .5s, opacity .5s; }
.dcard:hover::after { transform: scale(1); opacity: 1; }
.dcard:hover { box-shadow: 0 18px 30px -22px rgba(21,20,15,.45); transform: translateY(-3px); }
.steps li::before { transition: background .3s, color .3s, transform .3s; }
.steps li.in::before { background: var(--ink); color: var(--bone); }
.steps li::after { transform-origin: top; transform: scaleY(0); transition: transform .8s .2s; }
.steps li.in::after { transform: scaleY(1); }
.sidebar a { transition: background .2s, padding .2s, color .2s; }
.sidebar a:hover { padding-left: 16px; }

/* figures */
.fig { margin: 26px 0 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--bone); overflow: hidden; }
.fig.wide { margin-left: -14px; margin-right: -14px; }
.fig-stage { padding: 18px 16px 8px; }
.fig svg { display: block; width: 100%; height: auto; overflow: visible; }
.fig figcaption { padding: 12px 18px 14px; border-top: 1px dashed var(--line); font-size: 14px; color: var(--ink-mute); }
.fig-k { font: italic 600 14px var(--serif); color: var(--coral-deep); margin-right: 4px; }
.fig .paper { fill: #fbf7ea; stroke: var(--line); }
.fig .lbl { font: 700 10px var(--mono); letter-spacing: .1em; fill: var(--ink-faint); }
.fig text { font-family: var(--sans); }
/* verify */
.fig-verify .sl { fill: var(--paper-dark); }
.fig-verify .pill rect { fill: var(--ink); } .fig-verify .pill text { fill: var(--bone); font: 600 12px var(--sans); text-anchor: middle; }
.fig-verify .checker rect { fill: var(--olive); }
.fig-verify .ps { fill: var(--paper-dark); transform-box: fill-box; transform-origin: left; transform: scaleX(0); }
.fig-verify .ps.bad { fill: rgba(237,111,92,.55); }
.fig-verify .ln { fill: none; stroke: var(--coral); stroke-width: 1.5; stroke-dasharray: 400; stroke-dashoffset: 400; opacity: .8; }
.fig-verify .mk circle { fill: var(--olive); } .fig-verify .mk.bad circle { fill: var(--coral); }
.fig-verify .mk path { stroke: var(--bone); stroke-width: 2; fill: none; stroke-linecap: round; }
.fig-verify .mk { opacity: 0; transform-box: fill-box; transform-origin: center; transform: scale(.4); }
.fig-verify .why { font: 600 11px var(--mono); fill: var(--coral-deep); opacity: 0; }
.fig-verify.in .ps { animation: grow .5s cubic-bezier(.2,.7,.2,1) forwards; }
.fig-verify.in .ln { animation: draw .9s ease forwards; }
.fig-verify.in .mk { animation: pop .4s cubic-bezier(.3,1.6,.5,1) forwards; }
.fig-verify.in .ps.bad { animation: grow .5s forwards, strike 1s 2.6s forwards; }
.fig-verify.in .why { animation: fadein .5s 2.9s forwards; }
.fig-verify.in .ps0 { animation-delay: .3s; } .fig-verify.in .ps1 { animation-delay: .5s; } .fig-verify.in .ps2 { animation-delay: .7s; } .fig-verify.in .ps3 { animation-delay: .9s; } .fig-verify.in .ps4 { animation-delay: 1.1s; }
.fig-verify.in .ln0 { animation-delay: 1.2s; } .fig-verify.in .ln1 { animation-delay: 1.4s; } .fig-verify.in .ln3 { animation-delay: 1.6s; } .fig-verify.in .ln4 { animation-delay: 1.8s; }
.fig-verify.in .mk0 { animation-delay: 2.1s; } .fig-verify.in .mk1 { animation-delay: 2.2s; } .fig-verify.in .mk2 { animation-delay: 2.5s; } .fig-verify.in .mk3 { animation-delay: 2.3s; } .fig-verify.in .mk4 { animation-delay: 2.4s; }
@keyframes grow { to { transform: scaleX(1); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pop { to { opacity: 1; transform: scale(1); } }
@keyframes fadein { to { opacity: 1; } }
@keyframes strike { to { opacity: .3; } }
/* readings */
.fig-readings .bar { fill: var(--coral); transform-box: fill-box; transform-origin: bottom; transform: scaleY(0); }
.fig-readings .bar1 { fill: var(--mustard); } .fig-readings .bar3 { fill: var(--olive); }
.fig-readings .ax { font: 600 11px var(--mono); fill: var(--ink-mute); text-anchor: middle; }
.fig-readings .card { fill: #fff; stroke: var(--line); }
.fig-readings .rv { font: 600 13px var(--mono); fill: var(--ink); opacity: 0; }
.fig-readings .eq { stroke: var(--olive); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 24; stroke-dashoffset: 24; }
.fig-readings .agree rect { fill: var(--olive); } .fig-readings .agree text { fill: var(--bone); font: 700 12.5px var(--sans); text-anchor: middle; }
.fig-readings .agree { opacity: 0; transform: translateY(8px); }
.fig-readings.in .bar { animation: growy .7s cubic-bezier(.2,.7,.2,1) forwards; }
.fig-readings.in .bar1 { animation-delay: .1s; } .fig-readings.in .bar2 { animation-delay: .2s; } .fig-readings.in .bar3 { animation-delay: .3s; }
.fig-readings.in .rv { animation: fadein .4s forwards; }
.fig-readings.in .ra0 { animation-delay: .8s; } .fig-readings.in .ra1 { animation-delay: .95s; } .fig-readings.in .ra2 { animation-delay: 1.1s; } .fig-readings.in .ra3 { animation-delay: 1.25s; }
.fig-readings.in .rb0 { animation-delay: 1.3s; } .fig-readings.in .rb1 { animation-delay: 1.45s; } .fig-readings.in .rb2 { animation-delay: 1.6s; } .fig-readings.in .rb3 { animation-delay: 1.75s; }
.fig-readings.in .eq { animation: draw .35s forwards; } .fig-readings.in .eq0 { animation-delay: 2s; } .fig-readings.in .eq1 { animation-delay: 2.15s; } .fig-readings.in .eq2 { animation-delay: 2.3s; } .fig-readings.in .eq3 { animation-delay: 2.45s; }
.fig-readings.in .agree { animation: rise .5s 2.8s forwards; }
@keyframes growy { to { transform: scaleY(1); } }
@keyframes rise { to { opacity: 1; transform: none; } }
/* answer demo */
.demo { display: grid; grid-template-columns: 1.15fr .85fr; gap: 16px; font-size: 15px; }
.demo-q, .demo-a { display: flex; gap: 10px; align-items: flex-start; }
.demo-q { grid-column: 1 / -1; justify-content: flex-end; }
.demo-q p { background: var(--ink); color: var(--bone); padding: 10px 14px; border-radius: 16px 16px 4px 16px; max-width: 34ch; min-height: 44px; }
.demo-q p::after { content: ''; display: inline-block; width: 2px; height: 1em; background: var(--coral); margin-left: 2px; vertical-align: -2px; animation: blink 1s steps(1) infinite; }
.demo-q.done p::after { display: none; }
.demo-av { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 700 10px var(--sans); background: var(--paper-dark); color: var(--ink); order: 2; }
.demo-av.rk { background: var(--coral); order: 0; }
.demo-body { background: #fff; border: 1px solid var(--line); border-radius: 4px 16px 16px 16px; padding: 12px 14px; opacity: 0; transform: translateY(8px); transition: opacity .5s, transform .5s; }
.demo.answered .demo-body { opacity: 1; transform: none; }
.chip { display: inline-grid; place-items: center; min-width: 20px; height: 20px; margin: 0 2px 0 3px; padding: 0 5px; border-radius: 999px; border: 1px solid var(--coral); background: #fff2ee; color: var(--coral-deep); font: 700 11px var(--sans); cursor: pointer; vertical-align: 2px; transition: background .2s, color .2s, transform .2s; }
.chip:hover, .chip.on { background: var(--coral); color: #fff; transform: translateY(-1px); }
.demo-check { display: flex; align-items: center; gap: 8px; margin-top: 10px; padding: 7px 10px; border-radius: 10px; background: rgba(110,116,72,.12); color: var(--olive); font: 600 12.5px var(--sans); opacity: 0; transition: opacity .5s .6s; }
.demo.answered .demo-check { opacity: 1; }
.demo-check svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.demo-src { background: #fbf7ea; border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; font: 13px/1.6 var(--body); color: var(--ink-mute); opacity: 0; transition: opacity .5s .3s; }
.demo.answered .demo-src { opacity: 1; }
.demo-src-h { display: block; font: 700 10.5px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 6px; }
.demo-src-h i { color: var(--coral-deep); font-style: normal; }
.demo-src span { display: block; padding: 3px 6px; border-radius: 6px; transition: background .3s, color .3s; }
.demo-src span.hl { background: rgba(233,185,74,.45); color: var(--ink); }
@keyframes blink { 50% { opacity: 0; } }
/* orbit */
.orbit { position: relative; height: 340px; display: grid; place-items: center; overflow: hidden; }
.orbit-path { position: absolute; width: 280px; height: 280px; border-radius: 50%; border: 1px dashed var(--line); }
.orbit-path::before { content: ''; position: absolute; inset: 40px; border-radius: 50%; border: 1px solid var(--line-soft); }
.orbit-ring { position: absolute; width: 280px; height: 280px; animation: spin 48s linear infinite; z-index: 2; }
.orbit:hover .orbit-ring, .orbit:hover .orb-in { animation-play-state: paused; }
.orb { position: absolute; left: 50%; top: 50%; width: 46px; height: 46px; margin: -23px; transform: rotate(calc(360deg / var(--n) * var(--i))) translateY(-140px) rotate(calc(-360deg / var(--n) * var(--i))); }
.orb-in { display: grid; place-items: center; width: 100%; height: 100%; border-radius: 14px; background: #fff; border: 1px solid var(--line); box-shadow: 0 10px 20px -14px rgba(21,20,15,.5); animation: spin 48s linear infinite reverse; transition: transform .3s; }
.orb-in:hover { transform: scale(1.18); }
.orb svg { width: 24px; height: 24px; }
.orbit-core { position: relative; z-index: 3; width: 112px; height: 112px; border-radius: 50%; background: var(--ink); color: var(--bone); display: grid; place-items: center; align-content: center; box-shadow: 0 0 0 10px rgba(237,111,92,.12), 0 0 0 22px rgba(237,111,92,.06); animation: breathe 4s ease-in-out infinite; }
.orbit-core span { font: 800 26px var(--sans); } .orbit-core small { font: 500 10.5px var(--mono); color: var(--paper-dark); }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { box-shadow: 0 0 0 16px rgba(237,111,92,.10), 0 0 0 32px rgba(237,111,92,.04); } }
/* flow */
.fig-flow .box rect { fill: #fff; stroke: var(--line); } .fig-flow .ai rect { fill: #fbf7ea; }
.fig-flow .bt { font: italic 600 19px var(--serif); fill: var(--ink); } .fig-flow .bi { font: 500 13px var(--sans); fill: var(--ink-mute); }
.fig-flow .wire { fill: none; stroke: var(--ink-faint); stroke-width: 1.5; stroke-dasharray: 4 5; }
.fig-flow .pkt { fill: var(--coral); } .fig-flow .p2 { fill: var(--olive); }
.fig-flow .us rect { fill: var(--paper-dark); stroke: none; } .fig-flow .us text { font: 700 12px var(--sans); fill: var(--ink-mute); text-anchor: middle; }
.fig-flow .nogo { stroke: var(--coral); stroke-width: 2; fill: none; stroke-dasharray: 3 4; } .fig-flow .nogo.x { stroke-dasharray: none; stroke-linecap: round; }
/* roles */
.fig-roles .rung rect { fill: var(--paper-dark); transform-box: fill-box; transform-origin: bottom; transform: scaleY(0); }
.fig-roles .r2 rect { fill: var(--mustard); } .fig-roles .r3 rect { fill: var(--coral); }
.fig-roles .rung text { font: 700 12.5px var(--sans); fill: var(--ink); text-anchor: middle; opacity: 0; }
.fig-roles .note { font: 500 12px var(--sans); fill: var(--ink-mute); }
.fig-roles.in .rung rect { animation: growy .6s cubic-bezier(.2,.7,.2,1) forwards; } .fig-roles.in .rung text { animation: fadein .4s forwards; }
.fig-roles.in .r1 rect, .fig-roles.in .r1 text { animation-delay: .15s; } .fig-roles.in .r2 rect, .fig-roles.in .r2 text { animation-delay: .3s; } .fig-roles.in .r3 rect, .fig-roles.in .r3 text { animation-delay: .45s; }
.fig-roles.in .r0 text { animation-delay: .4s; } .fig-roles.in .r1 text { animation-delay: .55s; } .fig-roles.in .r2 text { animation-delay: .7s; } .fig-roles.in .r3 text { animation-delay: .85s; }
/* pipeline */
.fig-pipe .track { stroke: var(--line); stroke-width: 4; stroke-linecap: round; fill: none; }
.fig-pipe .track.fill { stroke: var(--coral); stroke-dasharray: 600; stroke-dashoffset: 600; }
.fig-pipe.in .track.fill { animation: draw 2.4s ease forwards; }
.fig-pipe .runner { fill: var(--ink); }
.fig-pipe .stop circle { fill: var(--bone); stroke: var(--ink); stroke-width: 1.5; }
.fig-pipe .sn { font: 700 12px var(--sans); text-anchor: middle; fill: var(--ink); }
.fig-pipe .st { font: 700 13px var(--sans); text-anchor: middle; fill: var(--ink); } .fig-pipe .ss { font: 500 11px var(--body); text-anchor: middle; fill: var(--ink-mute); }
.fig-pipe .s5 circle { fill: var(--olive); stroke: var(--olive); } .fig-pipe .s5 .sn { fill: var(--bone); }
/* pulse */
.fig-pulse .beat { fill: none; stroke: var(--coral); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; stroke-dasharray: 900; stroke-dashoffset: 900; }
.fig-pulse.in .beat { animation: draw 2.4s ease forwards, glow 3s 2.4s ease-in-out infinite; }
.fig-pulse .badge rect { fill: #fff; stroke: var(--line); } .fig-pulse .badge circle { fill: var(--olive); animation: blink 2s ease-in-out infinite; }
.fig-pulse .badge text { font: 700 12.5px var(--sans); fill: var(--ink); text-anchor: middle; }
@keyframes glow { 50% { opacity: .55; } }

/* changelog timeline */
.log { position: relative; }
.log .entry { position: relative; }
.log .entry::before { content: ''; position: absolute; left: -22px; top: 28px; width: 10px; height: 10px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 5px rgba(237,111,92,.15); }
.log::before { content: ''; position: absolute; left: -18px; top: 30px; bottom: 30px; width: 2px; background: linear-gradient(var(--coral), var(--line)); }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 20px; }
  .hero-art { justify-self: start; max-width: 100%; aspect-ratio: 16 / 9; border-radius: 120px 120px 14px 14px; }
  .demo { grid-template-columns: 1fr; }
  .fig.wide { margin-left: 0; margin-right: 0; }
  .orbit { height: 300px; } .orbit-ring, .orbit-path { width: 240px; height: 240px; }
  .orb { transform: rotate(calc(360deg / var(--n) * var(--i))) translateY(-120px) rotate(calc(-360deg / var(--n) * var(--i))); }
  .log::before, .log .entry::before { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
  .js [data-rv], .js .hero-copy > *, .js .hero-art { opacity: 1 !important; transform: none !important; }
  .fig * { animation: none !important; }
  .fig-verify .ps, .fig-readings .bar, .fig-roles .rung rect { transform: none; }
  .fig-verify .ln, .fig-readings .eq, .fig-pipe .track.fill, .fig-pulse .beat { stroke-dashoffset: 0; }
  .fig-verify .mk, .fig-verify .why, .fig-readings .rv, .fig-readings .agree, .fig-roles .rung text { opacity: 1; transform: none; }
  .orbit-ring, .orb-in, .orbit-core, .logo-plate span { animation: none; }
}
@media (max-width: 860px) {
  .fig-pipe .fig-stage, .fig-verify .fig-stage, .fig-readings .fig-stage, .fig-flow .fig-stage { overflow-x: auto; }
  .fig-pipe svg, .fig-flow svg { min-width: 600px; } .fig-verify svg, .fig-readings svg { min-width: 560px; }
}

/* 2026-10-15: header matches the landing page nav exactly (styles.css .nav / .brand / .nav-cta) */
.top-in { padding: 22px 32px; }
.brand { display: inline-flex; align-items: center; gap: 14px; font-family: var(--sans); font-weight: 700; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; font-size: 18px; }
.brand-mark { width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border: 1.5px solid var(--ink); border-radius: 50%;
  font-family: var(--serif); font-style: italic; font-weight: 400; font-size: 17px; letter-spacing: 0; color: var(--ink); background: transparent; }
.brand-meta { font-family: var(--sans); font-size: 10px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); line-height: 1.3; margin-left: 4px; border-left: 1px solid var(--line); padding-left: 14px; }
.brand-meta b { display: block; color: var(--ink); font-weight: 600; }
.top-side { gap: 18px; }
.top-link { color: var(--ink); font-family: var(--sans); font-size: 14px; font-weight: 500; transition: color .18s ease; }
.top-link:hover { color: var(--coral); }
.nav-cta { display: inline-flex; align-items: center; gap: 10px; padding: 9px 16px; border-radius: 999px; background: var(--coral); color: var(--paper);
  font-family: var(--sans); font-size: 13px; font-weight: 500; text-decoration: none; white-space: nowrap; flex-shrink: 0; }
.nav-cta::after { content: '\2192'; color: #fff; }
.status-dot { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line); display: inline-flex; align-items: center; justify-content: center; }
.status-dot::after { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--coral); }
.menu-btn { width: 44px; height: 44px; padding: 10px; }
.menu-btn span { width: 22px; margin: 5px 0; }
:root { --top: 136px; }
@media (max-width: 1180px) { .brand-meta { display: none; } }
@media (max-width: 860px) {
  :root { --top: 124px; }
  .top-in { padding: 16px 18px; }
  .brand-name { display: inline; font-size: 18px; }
  .nav-cta, .status-dot { display: none; }
}