/* ============================================================
   LATENT MINDS INSTITUTE — design system
   Evolved from the MO3 Research observatory system.
   Warm paper, near-black ink, copper instrument chrome,
   ultraviolet reserved for latent/hidden semantics,
   one accent colour per research programme.
   "An observatory for internal computation."
   ============================================================ */

:root {
  /* ground */
  --bg:        #FBFAF6;
  --panel:     #FFFFFF;
  --tint:      #F5F3EE;
  --ink:       #191813;
  --ink-2:     #45443C;
  --ink-3:     #706E63;
  --ink-4:     #A3A198;
  --hair:      #E7E4EC;
  --hair-2:    #D6D2DF;

  /* institute chrome */
  --copper:    #96481D;
  --copper-2:  #B05A28;
  --uv:        #4F46C8;      /* latent / hidden semantics only */
  --uv-soft:   rgba(79, 70, 200, 0.08);

  /* programmes */
  --p-rep:     #4F46C8;      /* 01 representations */
  --p-com:     #0E7263;      /* 02 computation */
  --p-cog:     #96481D;      /* 03 cognition & behaviour */
  --p-dep:     #8A1F2C;      /* 04 deployment & institutions */

  /* epistemic status */
  --st-finding:   #1B7A4A;   /* empirical result / replication */
  --st-hypoth:    #B4690E;   /* hypothesis */
  --st-proposal:  #3B5BA9;   /* proposed experiment / protocol */
  --st-concept:   #45443C;   /* conceptual framework */
  --st-open:      #4F46C8;   /* open question */
  --st-instr:     #96481D;   /* interactive instrument */
  --bad:          #B02020;
  --good:         #1B7A4A;
  --warn:         #B4690E;
  --viz-blue:     #3B5BA9;

  --sans:  'Inter', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
  --serif: 'Source Serif 4', 'Georgia', 'Times New Roman', serif;
  --mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --w-prose: 700px;
  --w-wide:  960px;
  --w-full:  1180px;
  --nav-h:   58px;
}

:root { color-scheme: only light; }
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { background: var(--bg); color: var(--ink); font-family: var(--serif); font-size: 18px; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--ink); color: var(--bg); }
img { max-width: 100%; height: auto; }
[hidden] { display: none !important; }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--bg); padding: 10px 18px; z-index: 999; font-family: var(--sans); font-size: 13px; }
.skip-link:focus { left: 12px; top: 12px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--uv); outline-offset: 2px; border-radius: 2px; }

/* ============ nav ============ */
.site-nav { position: sticky; top: 0; z-index: 100; background: rgba(251,250,246,0.93); border-bottom: 1px solid var(--hair); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.site-nav .nav-inner { max-width: var(--w-full); margin: 0 auto; padding: 0 24px; height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.nav-brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.nav-brand svg { width: 22px; height: 22px; flex: none; }
.nav-brand .wordmark { font-family: var(--sans); font-weight: 600; font-size: 13px; letter-spacing: 0.09em; text-transform: uppercase; white-space: nowrap; }
.nav-brand .wordmark small { display: block; font-family: var(--mono); font-weight: 500; font-size: 8.5px; letter-spacing: 0.34em; color: var(--copper); margin-top: 1px; }
.site-nav .nav-links { display: flex; gap: 24px; list-style: none; }
.site-nav .nav-links a { font-family: var(--sans); font-size: 13.5px; color: var(--ink-3); transition: color 160ms ease; padding: 4px 0; }
.site-nav .nav-links a:hover { color: var(--ink); }
.site-nav .nav-links a.active { color: var(--ink); box-shadow: 0 1px 0 var(--copper); }
.menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-btn span { display: block; width: 20px; height: 1.5px; background: var(--ink); margin: 5px 0; }

/* ============ masthead / sections ============ */
.mast { max-width: var(--w-full); margin: 0 auto; padding: 54px 24px 0; }
.kicker-row { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--copper); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.kicker-row .right { color: var(--ink-3); }
.mast-title { font-family: var(--serif); font-weight: 600; font-size: clamp(34px, 6vw, 60px); line-height: 1.08; letter-spacing: -0.018em; margin: 26px 0 18px; max-width: 820px; }
.mast-sub { font-family: var(--serif); font-size: clamp(17px, 2.4vw, 21px); font-style: italic; line-height: 1.55; color: var(--ink-2); max-width: 660px; }
.mast-byline { margin-top: 26px; font-family: var(--sans); font-size: 14px; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 6px 18px; align-items: baseline; }
.mast-byline b { font-weight: 600; color: var(--ink); }

.btn-row { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 10px; }
.btn-row a, .btn-row button { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.06em; padding: 8px 15px; border: 1px solid var(--hair-2); border-radius: 3px; color: var(--ink-2); background: none; cursor: pointer; transition: all 150ms ease; }
.btn-row a:hover, .btn-row a:focus-visible, .btn-row button:hover { border-color: var(--copper); color: var(--copper); }
.btn-row a.primary, .btn-row button.primary { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn-row a.primary:hover, .btn-row a.primary:focus-visible { background: var(--copper); border-color: var(--copper); color: #fff; }

.section { max-width: var(--w-full); margin: 0 auto; padding: 58px 24px 8px; }
.section-rule { max-width: var(--w-full); margin: 50px auto 0; padding: 0 24px; }
.section-rule hr { border: none; border-top: 1px solid var(--hair); }
.sec-label { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 20px; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.sec-label .no { color: var(--copper); }
.sec-h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(24px, 3.6vw, 32px); letter-spacing: -0.012em; margin-bottom: 16px; }
.lede { font-family: var(--serif); font-size: 17.5px; line-height: 1.7; color: var(--ink-2); max-width: 680px; }
.lede p { margin-bottom: 14px; }
.lede strong { color: var(--ink); font-weight: 600; }

.thesis { border-left: 2px solid var(--copper); padding: 6px 0 6px 26px; max-width: 720px; }
.thesis p { font-family: var(--serif); font-size: clamp(18px, 2.6vw, 22px); line-height: 1.55; color: var(--ink); }

/* ============ status labels (epistemic) ============ */
.status { display: inline-block; font-family: var(--mono); font-size: 10px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; border: 1px solid; border-radius: 2px; padding: 3px 8px; white-space: nowrap; }
.status.finding    { color: var(--st-finding);  border-color: var(--st-finding); }
.status.replication{ color: var(--st-finding);  border-color: var(--st-finding); border-style: double; }
.status.hypothesis { color: var(--st-hypoth);   border-color: var(--st-hypoth); }
.status.proposal   { color: var(--st-proposal); border-color: var(--st-proposal); border-style: dashed; }
.status.concept    { color: var(--st-concept);  border-color: var(--st-concept); border-style: dashed; }
.status.open       { color: var(--st-open);     border-color: var(--st-open); border-style: dotted; }
.status.instrument { color: var(--st-instr);    border-color: var(--st-instr); }
.status.dev        { color: var(--ink-3);       border-color: var(--hair-2); border-style: dashed; }

.pill { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; border: 1px solid var(--hair-2); border-radius: 20px; padding: 3px 10px; color: var(--ink-3); }
.pill.live { border-color: var(--copper); color: var(--copper); }

/* epistemic banner on papers */
.epistemic { display: flex; gap: 14px; align-items: flex-start; font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--ink-2); background: var(--tint); border: 1px solid var(--hair-2); border-left: 3px solid var(--st-concept); border-radius: 4px; padding: 14px 18px; margin: 26px 0; }
.epistemic.proposal { border-left-color: var(--st-proposal); }
.epistemic.finding  { border-left-color: var(--st-finding); }
.epistemic b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 4px; }

/* ============ programme accents ============ */
.prog-rep { --prog: var(--p-rep); }
.prog-com { --prog: var(--p-com); }
.prog-cog { --prog: var(--p-cog); }
.prog-dep { --prog: var(--p-dep); }
.prog-tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--prog, var(--copper)); }
.prog-tag::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--prog, var(--copper)); margin-right: 7px; vertical-align: baseline; }

/* ============ cards & entry lists ============ */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 16px; }
.card { display: flex; flex-direction: column; gap: 10px; border: 1px solid var(--hair-2); border-top: 2px solid var(--prog, var(--ink)); border-radius: 5px; background: var(--panel); padding: 20px 20px 18px; transition: box-shadow 160ms ease, transform 160ms ease; }
a.card:hover { box-shadow: 4px 4px 0 var(--hair); transform: translate(-1px, -1px); }
.card .c-no { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--prog, var(--copper)); }
.card h3 { font-family: var(--serif); font-weight: 600; font-size: 19.5px; line-height: 1.25; letter-spacing: -0.01em; }
.card p { font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--ink-3); }
.card .c-foot { margin-top: auto; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-4); display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; padding-top: 8px; }

.entry-list { border-top: 1px solid var(--hair); }
.entry { display: block; padding: 20px 12px; margin: 0 -12px; border-bottom: 1px solid var(--hair); border-radius: 4px; transition: background 160ms ease; }
.entry:hover { background: var(--tint); }
.entry .e-meta { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-4); margin-bottom: 6px; display: flex; gap: 8px 14px; flex-wrap: wrap; align-items: center; }
.entry .e-meta .e-type { color: var(--copper); }
.entry .e-title { font-family: var(--serif); font-weight: 600; font-size: 20px; line-height: 1.3; letter-spacing: -0.01em; margin-bottom: 5px; }
.entry .e-desc { font-family: var(--sans); font-size: 13.5px; color: var(--ink-3); line-height: 1.55; max-width: 640px; }

/* metadata block (research objects) */
.meta-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 18px 0 22px; max-width: 700px; font-family: var(--sans); }
.meta-grid .cell { border-top: 1px solid var(--hair); padding-top: 8px; }
.meta-grid .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.meta-grid .v { font-size: 13px; color: var(--ink); margin-top: 4px; line-height: 1.5; }

/* featured card */
.featured { border: 1px solid var(--ink); border-radius: 6px; background: var(--panel); overflow: hidden; box-shadow: 5px 5px 0 var(--hair); }
.featured-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 22px; border-bottom: 1px solid var(--hair); background: var(--bg); font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.featured-head .flag { color: var(--copper); }
.featured-body { padding: 26px 22px; }
.featured-body h3 { font-family: var(--serif); font-weight: 600; font-size: clamp(22px, 3.4vw, 30px); line-height: 1.2; letter-spacing: -0.012em; margin-bottom: 6px; }
.featured-body .fsub { font-family: var(--serif); font-style: italic; font-size: 16.5px; color: var(--ink-2); margin-bottom: 18px; max-width: 640px; }
.featured-q { font-family: var(--sans); font-size: 13px; color: var(--ink-2); border: 1px dashed var(--hair-2); border-radius: 4px; padding: 12px 16px; margin: 16px 0; max-width: 660px; }
.featured-q b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--uv); display: block; margin-bottom: 5px; }
.featured-body .fabs { font-family: var(--sans); font-size: 14.5px; line-height: 1.65; color: var(--ink-2); max-width: 660px; margin-bottom: 18px; }

/* question lists */
.q-list { list-style: none; counter-reset: q; max-width: 720px; }
.q-list li { counter-increment: q; display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--hair); font-family: var(--serif); font-size: 17.5px; line-height: 1.55; }
.q-list li::before { content: "Q" counter(q); font-family: var(--mono); font-size: 12px; color: var(--copper); padding-top: 5px; }

/* ============ figures (research instruments) ============ */
.figure { margin: 2.2em 0 2.6em; border: 1px solid var(--hair-2); border-radius: 6px; background: var(--panel); overflow: hidden; font-family: var(--sans); }
.figure-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 16px; border-bottom: 1px solid var(--hair); background: var(--bg); }
.figure-head .fig-no { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.figure-head .fig-no b { color: var(--copper); font-weight: 600; }
.figure-head .fig-tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--uv); }
.figure-head .fig-tag::before { content: "\25CF"; margin-right: 6px; animation: figpulse 2.2s infinite; }
@keyframes figpulse { 50% { opacity: 0.3; } }
@media (prefers-reduced-motion: reduce) { .figure-head .fig-tag::before { animation: none; } }
.figure-body { padding: 18px 16px; }
.figure-caption { font-family: var(--sans); font-size: 13px; line-height: 1.55; color: var(--ink-3); padding: 12px 16px; border-top: 1px solid var(--hair); }

.fig-detail { min-height: 66px; border-left: 2px solid var(--copper); padding: 4px 0 4px 16px; margin-top: 14px; font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--ink-2); }
.fig-detail b { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--copper); margin-bottom: 4px; }
.fig-detail.uv { border-left-color: var(--uv); }
.fig-detail.uv b { color: var(--uv); }
.fig-stagerow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.fig-stage { font-family: var(--mono); font-size: 11.5px; padding: 7px 12px; border: 1px solid var(--hair-2); border-radius: 3px; background: var(--panel); color: var(--ink-2); cursor: pointer; transition: all 130ms ease; }
.fig-stage:hover { border-color: var(--ink); color: var(--ink); }
.fig-stage.on { background: var(--ink); border-color: var(--ink); color: var(--bg); }
svg .qdot { cursor: pointer; }
svg .qdot:focus { outline: none; }
svg .qdot:focus circle, svg .qdot:hover circle { stroke: var(--uv); stroke-width: 2.5; }
.figure svg text { font-family: var(--mono); }

/* controls inside figures */
.figure .controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px 22px; margin-bottom: 16px; }
.figure .ctl label { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; font-family: var(--sans); }
.figure .ctl label output { font-family: var(--mono); font-weight: 600; color: var(--ink); }
.figure input[type=range] { width: 100%; accent-color: var(--copper); height: 22px; }
.figure .readout { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-top: 14px; }
.figure .stat { border: 1px solid var(--hair); border-radius: 4px; padding: 10px 12px; background: var(--bg); }
.figure .stat .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.figure .stat .v { font-family: var(--mono); font-size: 19px; font-weight: 600; margin-top: 3px; }
.figure .stat .v.pos { color: var(--good); } .figure .stat .v.neg { color: var(--bad); } .figure .stat .v.warn { color: var(--warn); }

/* ============ paper template ============ */
.paper-shell { max-width: 1080px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 56px; }
.paper-main { min-width: 0; max-width: 700px; }
.paper-toc { position: sticky; top: calc(var(--nav-h) + 28px); align-self: start; font-family: var(--sans); padding-top: 88px; max-height: calc(100vh - var(--nav-h) - 40px); overflow-y: auto; }
.paper-toc .toc-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 12px; }
.paper-toc ol { list-style: none; border-left: 1px solid var(--hair); }
.paper-toc a { display: block; font-size: 12.5px; line-height: 1.4; color: var(--ink-3); padding: 5px 0 5px 14px; margin-left: -1px; border-left: 2px solid transparent; transition: all 140ms ease; }
.paper-toc a:hover { color: var(--ink); }
.paper-toc a.active { color: var(--copper); border-left-color: var(--copper); }
#readProgress { position: fixed; top: 0; left: 0; height: 2px; width: 0; background: var(--copper); z-index: 300; }

.paper-head { padding: 56px 0 0; }
.paper-area { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--copper); margin-bottom: 18px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.paper-title { font-family: var(--serif); font-weight: 600; font-size: clamp(30px, 5.6vw, 46px); line-height: 1.12; letter-spacing: -0.016em; margin-bottom: 12px; }
.paper-subtitle { font-family: var(--serif); font-style: italic; font-size: clamp(17px, 2.6vw, 21px); line-height: 1.5; color: var(--ink-2); max-width: 620px; margin-bottom: 26px; }
.paper-byline { display: flex; flex-wrap: wrap; gap: 8px 22px; font-family: var(--sans); font-size: 13.5px; color: var(--ink-2); padding: 14px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--hair); }
.paper-byline .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 2px; }
.paper-byline .cell b { font-weight: 600; color: var(--ink); }

.paper-body { font-family: var(--serif); font-size: 18px; line-height: 1.72; color: var(--ink-2); }
.paper-body h2 { font-family: var(--serif); font-weight: 600; font-size: 25px; color: var(--ink); letter-spacing: -0.01em; margin: 2.4em 0 0.7em; padding-bottom: 8px; border-bottom: 1px solid var(--hair); display: flex; align-items: baseline; gap: 12px; }
.paper-body h2 .sno { font-family: var(--mono); font-size: 12px; color: var(--copper); letter-spacing: 0.08em; }
.paper-body h3 { font-family: var(--serif); font-weight: 600; font-size: 19px; color: var(--ink); margin: 1.7em 0 0.55em; }
.paper-body p { margin-bottom: 1.1em; }
.paper-body strong { color: var(--ink); font-weight: 600; }
.paper-body em { font-style: italic; }
.paper-body ul, .paper-body ol { margin: 0 0 1.1em 1.35em; }
.paper-body li { margin-bottom: 0.45em; }
.paper-body a { color: var(--copper); border-bottom: 1px solid rgba(150,72,29,0.3); transition: border-color 150ms; }
.paper-body a:hover { border-bottom-color: var(--copper); }
.paper-body code { font-family: var(--mono); font-size: 0.82em; background: var(--tint); border: 1px solid var(--hair); padding: 1px 6px; border-radius: 3px; }
.paper-body .abstract { font-family: var(--sans); font-size: 15px; line-height: 1.7; border-left: 2px solid var(--ink); padding: 4px 0 4px 22px; margin: 34px 0; color: var(--ink-2); }
.paper-body .abstract b { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); display: block; margin-bottom: 8px; }

/* definition pair */
.def-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--hair-2); border: 1px solid var(--hair-2); border-radius: 6px; overflow: hidden; margin: 26px 0; font-family: var(--sans); }
.def-pair .def { background: var(--panel); padding: 20px; }
.def-pair .def h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 10px; }
.def-pair .def:first-child h4 { color: var(--uv); }
.def-pair .def:last-child h4 { color: var(--copper); }
.def-pair .def p { font-size: 13.5px; line-height: 1.6; color: var(--ink-2); margin: 0; }

.callout { background: var(--uv-soft); border: 1px solid rgba(79, 70, 200, 0.25); border-radius: 6px; padding: 16px 20px; margin: 24px 0; font-family: var(--sans); font-size: 14px; line-height: 1.65; color: var(--ink); }
.callout b { font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--uv); display: block; margin-bottom: 6px; }

/* hypothesis / experiment blocks */
.hblock { border: 1px solid var(--hair-2); border-radius: 6px; margin: 18px 0; font-family: var(--sans); overflow: hidden; }
.hblock .hh { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 10px 16px; background: var(--bg); border-bottom: 1px solid var(--hair); font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; }
.hblock .hh .id { color: var(--copper); font-weight: 600; }
.hblock .hh .st { color: var(--ink-3); }
.hblock .hb { padding: 14px 16px; font-size: 14px; line-height: 1.65; color: var(--ink-2); }
.hblock .hb p { margin-bottom: 8px; }
.hblock .hb p:last-child { margin-bottom: 0; }
.hblock .hb .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }

/* glossary / marginal definitions */
.gloss { border-bottom: 1px dotted var(--uv); cursor: help; position: relative; }
.margin-note { font-family: var(--sans); font-size: 12.5px; line-height: 1.55; color: var(--ink-3); border-left: 1px solid var(--hair-2); padding-left: 12px; margin: 14px 0; }

/* references, citation, versions */
.refs { font-family: var(--sans); font-size: 13.5px; line-height: 1.6; color: var(--ink-2); }
.refs li { margin-bottom: 12px; padding-left: 6px; }
.refs a { color: var(--copper); border-bottom: 1px solid rgba(150, 72, 29, 0.3); }
.refs a:hover { border-bottom-color: var(--copper); }
.cite-block { font-family: var(--mono); font-size: 12px; line-height: 1.6; background: var(--panel); border: 1px solid var(--hair-2); border-radius: 6px; padding: 16px 18px; overflow-x: auto; white-space: pre; color: var(--ink-2); margin: 18px 0; }
.vh { font-family: var(--sans); font-size: 13.5px; }
.vh li { display: grid; grid-template-columns: 90px 1fr; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--hair); list-style: none; }
.vh .v { font-family: var(--mono); color: var(--copper); }

/* code blocks / protocols */
.codeblock { font-family: var(--mono); font-size: 12.5px; line-height: 1.65; background: #14130F; color: #E8E6DE; border-radius: 6px; padding: 18px 20px; overflow-x: auto; margin: 18px 0; }
.codeblock .c { color: #8B897D; } .codeblock .s { color: #C9A227; } .codeblock .k { color: #8FA8E8; }

/* archive page shells */
.archive { max-width: var(--w-wide); margin: 0 auto; padding: 60px 24px 96px; font-family: var(--sans); }
.archive-kicker { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--copper); margin-bottom: 16px; }
.archive-title { font-family: var(--serif); font-weight: 600; font-size: clamp(32px, 6vw, 48px); letter-spacing: -0.015em; margin-bottom: 12px; }
.archive-desc { font-size: 15px; color: var(--ink-3); line-height: 1.65; max-width: 620px; margin-bottom: 20px; font-family: var(--sans); }
.archive-section { margin-top: 52px; }
.archive-section > h2 { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); padding-bottom: 10px; border-bottom: 1px solid var(--ink); margin-bottom: 4px; }

/* filters */
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 6px; font-family: var(--mono); }
.filter-row button { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; padding: 6px 12px; border: 1px solid var(--hair-2); border-radius: 20px; background: none; color: var(--ink-2); cursor: pointer; transition: all 130ms ease; }
.filter-row button:hover { border-color: var(--ink); color: var(--ink); }
.filter-row button.on { background: var(--ink); border-color: var(--ink); color: var(--bg); }

/* ============ footer ============ */
.site-footer { border-top: 1px solid var(--hair); margin-top: 72px; }
.footer-grid { max-width: var(--w-full); margin: 0 auto; padding: 42px 24px 20px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 28px; font-family: var(--sans); font-size: 13px; color: var(--ink-3); }
.footer-grid h4 { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-4); margin-bottom: 10px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 7px; }
.footer-grid a { color: var(--ink-3); }
.footer-grid a:hover { color: var(--copper); }
.footer-brand .wordmark { font-family: var(--sans); font-weight: 600; font-size: 13px; letter-spacing: 0.09em; text-transform: uppercase; color: var(--ink); }
.footer-brand p { margin-top: 10px; max-width: 300px; line-height: 1.6; font-size: 12.5px; }
.footer-base { max-width: var(--w-full); margin: 0 auto; padding: 18px 24px 30px; border-top: 1px solid var(--hair); display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-4); }
.footer-base a { color: var(--ink-3); }
.footer-base a:hover { color: var(--copper); }

/* ============ responsive ============ */
@media (max-width: 880px) {
  .site-nav .nav-links { display: none; }
  .menu-btn { display: block; }
  .site-nav .nav-links.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--hair); padding: 14px 24px 20px; gap: 14px; }
  .paper-shell { grid-template-columns: 1fr; gap: 0; }
  .paper-toc { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .def-pair { grid-template-columns: 1fr; }
  .mast { padding-top: 36px; }
  .q-list li { grid-template-columns: 34px 1fr; font-size: 16.5px; }
  .paper-body { font-size: 17px; }
  .footer-grid { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: 1fr 1fr; }
}

/* ============ print ============ */
@media print {
  .site-nav, .site-footer, .paper-toc, #readProgress, .btn-row a.primary, .fig-stagerow, .fig-detail, .filter-row, .menu-btn { display: none !important; }
  body { background: #fff; color: #000; font-size: 11.5pt; }
  .paper-shell { display: block; max-width: none; padding: 0; }
  .paper-main { max-width: none; }
  .paper-body { color: #111; }
  .figure { box-shadow: none; break-inside: avoid; }
  .paper-head { padding-top: 0; }
  a { color: #000; border-bottom: none; }
  .refs a::after { content: " (" attr(href) ")"; font-size: 9pt; color: #444; }
}