/* Numadelic Labs LLP: shared design system
   Palette follows the brief: ivory, navy, stone-grey, restrained copper.
   Text-safe copper (--copper-deep) is used for small text; --copper is for rules and large marks. */
:root {
  --navy: #152B3A;
  --navy-dark: #0B1723;
  --ivory: #F5F3EE;
  --white: #FFFFFF;
  --copper: #A46B42;
  --copper-deep: #84512D;
  --slate: #42545E;
  --border: #DCE1E0;
  --stone: #E9E7E1;
  --stone-deep: #D9D6CD;
  --ok: #2F6B4F;
  --warn: #8A5A12;
  --bad: #9B2C2C;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --measure: 66ch;
  --wrap: 1180px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --radius: 3px;
  --space-section: clamp(3.5rem, 8vw, 6.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
body { margin: 0; background: var(--ivory); color: var(--slate); font: 1rem/1.65 var(--sans); text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; height: auto; }
img { display: block; }
a { color: var(--navy); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--copper-deep); }
:focus-visible { outline: 3px solid var(--copper); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--navy); color: var(--ivory); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ---------- typography ---------- */
h1, h2, h3, h4 { font-family: var(--serif); color: var(--navy); line-height: 1.16; font-weight: 600; margin: 0 0 0.6em; letter-spacing: -0.012em; }
h1 { font-size: clamp(2.2rem, 5.4vw, 3.9rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.45rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.45rem); }
h4 { font-size: 1.05rem; font-family: var(--sans); font-weight: 650; letter-spacing: 0; }
p { margin: 0 0 1.1em; max-width: var(--measure); }
.lead { font-size: clamp(1.1rem, 1.9vw, 1.28rem); line-height: 1.6; color: var(--navy); max-width: 60ch; }
.small { font-size: 0.9rem; }
.muted { color: var(--slate); opacity: .9; }
ul, ol { padding-left: 1.2em; margin: 0 0 1.2em; max-width: var(--measure); }
li { margin-bottom: 0.4em; }
strong { color: var(--navy); font-weight: 650; }
code, kbd { font-family: var(--mono); font-size: .9em; background: var(--stone); padding: .08em .35em; border-radius: 2px; }
hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 1rem; top: -4rem; background: var(--navy); color: var(--ivory); padding: .7rem 1rem; z-index: 100; border-radius: var(--radius); }
.skip-link:focus { top: 1rem; color: var(--ivory); }

/* ---------- layout ---------- */
.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }
.section { padding-block: var(--space-section); }
.section--tight { padding-block: clamp(2.2rem, 5vw, 3.5rem); }
.section--stone { background: var(--stone); }
.section--navy { background: var(--navy); color: #D4DCE0; }
.section--navy h2, .section--navy h3, .section--navy h4, .section--navy strong { color: var(--ivory); }
.section--navy a { color: #F0D9C6; }
.section--navy .lead { color: var(--ivory); }
.section-head { max-width: 46rem; margin-bottom: clamp(1.8rem, 4vw, 3rem); }
.section-head h2 { position: relative; padding-top: 1.1rem; }
.section-head h2::before { content: ""; position: absolute; top: 0; left: 0; width: 2.6rem; height: 3px; background: var(--copper); }
.split { display: grid; gap: clamp(1.6rem, 4vw, 3.5rem); align-items: center; }
@media (min-width: 880px) {
  .split { grid-template-columns: 1.05fr 1fr; }
  .split--wide-left { grid-template-columns: 1.4fr 1fr; }
  .split--wide-right { grid-template-columns: 1fr 1.4fr; }
  .split--top { align-items: start; }
  .split--rev > :first-child { order: 2; }
}
.grid { display: grid; gap: clamp(1rem, 2.4vw, 1.6rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 14.5rem), 1fr)); }

/* ---------- header / nav ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(245, 243, 238, .97); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.4rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; color: var(--navy); }
.brand img { width: 2.3rem; height: 2.3rem; }
.brand-name { font-family: var(--serif); font-weight: 650; font-size: 1.22rem; letter-spacing: -.01em; line-height: 1.1; }
.brand-name small { display: block; font: 500 .72rem/1.2 var(--sans); color: var(--slate); letter-spacing: .01em; margin-top: .12rem; }
.nav-toggle { display: inline-flex; align-items: center; gap: .5rem; background: transparent; border: 1px solid var(--navy); color: var(--navy); padding: .55rem .85rem; border-radius: var(--radius); font: 600 .92rem var(--sans); cursor: pointer; }
.nav-toggle-bars { width: 1.05rem; height: 2px; background: currentColor; position: relative; display: inline-block; }
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; width: 100%; height: 2px; background: currentColor; }
.nav-toggle-bars::before { top: -5px; } .nav-toggle-bars::after { top: 5px; }
.site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--ivory); border-bottom: 1px solid var(--border); padding: .5rem var(--gutter) 1.4rem; }
.site-nav.is-open { display: block; }
.site-nav ul { list-style: none; margin: 0; padding: 0; max-width: none; }
.site-nav li { margin: 0; }
.site-nav a { display: block; padding: .8rem 0; text-decoration: none; color: var(--navy); font-weight: 560; border-bottom: 1px solid var(--border); }
.site-nav a[aria-current="page"] { color: var(--copper-deep); box-shadow: inset 3px 0 0 var(--copper); padding-left: .8rem; }
.site-nav .nav-cta { margin-top: 1rem; }
.site-nav a.btn { display: inline-flex; padding: .85rem 1.35rem; border: 1.5px solid var(--navy); color: var(--ivory); font-weight: 620; font-size: .96rem; }
.site-nav a.btn:hover { color: var(--white); }
.site-nav a.btn[aria-current="page"] { box-shadow: none; padding-left: 1.35rem; color: var(--ivory); }
.site-nav a.btn[aria-current="page"]::after { display: none; }
@media (min-width: 1100px) {
  .nav-toggle { display: none; }
  .site-nav { display: block; position: static; background: transparent; border: 0; padding: 0; }
  .site-nav ul { display: flex; align-items: center; gap: clamp(.9rem, 1.8vw, 1.7rem); }
  .site-nav a { padding: .4rem 0; border: 0; font-size: .96rem; position: relative; }
  .site-nav a[aria-current="page"] { box-shadow: none; padding-left: 0; }
  .site-nav a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -.15rem; height: 2px; background: var(--copper); }
  .site-nav .nav-cta { margin: 0 0 0 .4rem; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; padding: .85rem 1.35rem; border-radius: var(--radius); font: 620 .98rem/1.2 var(--sans); text-decoration: none; border: 1.5px solid var(--navy); cursor: pointer; transition: background-color .15s, color .15s, border-color .15s; min-height: 2.9rem; }
.btn--primary { background: var(--navy); color: var(--ivory); }
.btn--primary:hover { background: var(--navy-dark); color: var(--white); }
.btn--ghost { background: transparent; color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: var(--ivory); }
.btn--copper { background: var(--copper-deep); border-color: var(--copper-deep); color: var(--white); }
.btn--copper:hover { background: #6E4224; border-color: #6E4224; color: var(--white); }
.section--navy .btn--ghost { color: var(--ivory); border-color: var(--ivory); }
.section--navy .btn--ghost:hover { background: var(--ivory); color: var(--navy); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.text-link { font-weight: 600; }

/* ---------- stage disclosure ---------- */
.stage-strip { background: var(--navy); color: #E8E4DB; font-size: .92rem; }
.stage-strip .wrap { display: flex; flex-wrap: wrap; gap: .3rem 1.2rem; align-items: baseline; padding-block: .62rem; }
.stage-strip strong { color: var(--ivory); }
.stage-strip a { color: #F0D9C6; }

/* ---------- hero ---------- */
.hero { padding-block: clamp(2.6rem, 6vw, 5rem) clamp(2.6rem, 6vw, 4.5rem); }
.hero-grid { display: grid; gap: clamp(1.6rem, 4vw, 3rem); align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.02fr 1fr; } }
.hero h1 { max-width: 15ch; }
.hero .lead { margin-bottom: 0; }
.figure-plate { margin: 0; position: relative; }
.figure-plate img { width: 100%; }
.concept-tag { display: inline-block; font: 600 .78rem/1.3 var(--sans); color: var(--navy); background: var(--white); border: 1px solid var(--border); border-left: 3px solid var(--copper); padding: .28rem .6rem; border-radius: 2px; }
.figure-plate .concept-tag { margin-top: .6rem; }
figure { margin: 0; }
figcaption { font-size: .88rem; color: var(--slate); margin-top: .6rem; max-width: 60ch; }

/* ---------- panels, cards, chips ---------- */
.panel { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: clamp(1.1rem, 2.4vw, 1.7rem); }
.panel--flat { background: transparent; border: 0; border-top: 2px solid var(--navy); border-radius: 0; padding: 1.1rem 0 0; }
.panel--stone { background: var(--stone); border-color: var(--stone-deep); }
.panel h3 { margin-bottom: .45em; }
.panel > :last-child { margin-bottom: 0; }
.chip { display: inline-block; font: 620 .78rem/1.25 var(--sans); padding: .22rem .6rem; border-radius: 99px; border: 1px solid currentColor; white-space: nowrap; }
.chip--history { color: #6B4A12; background: #F6EBD2; border-color: #E4D2A5; }
.chip--interp { color: #1F4B64; background: #DDEAF1; border-color: #B5CFDD; }
.chip--hyp { color: #5B2F6B; background: #EBDFF1; border-color: #D2BCDD; }
.chip--valid { color: #1E5238; background: #DCEDE3; border-color: #B3D4C1; }
.chip--now { color: #1E5238; background: #DCEDE3; border-color: #B3D4C1; }
.chip--plan { color: var(--slate); background: var(--stone); border-color: var(--stone-deep); }
.chip--concept { color: var(--copper-deep); background: #F4E6DA; border-color: #E2C7AF; }
.callout { border-left: 4px solid var(--copper); background: var(--white); padding: 1rem 1.2rem; border-radius: 0 var(--radius) var(--radius) 0; max-width: 62ch; }
.callout > :last-child { margin-bottom: 0; }
.callout--warn { border-left-color: var(--warn); background: #FBF4E4; }
.callout--navy { background: var(--navy); border-left-color: var(--copper); color: #D4DCE0; }
.callout--navy strong { color: var(--ivory); }
.defs { display: grid; gap: .2rem 1.4rem; grid-template-columns: 1fr; margin: 0; max-width: 62ch; }
.defs dt { font-weight: 650; color: var(--navy); margin-top: .8rem; }
.defs dd { margin: 0; }
@media (min-width: 640px) { .defs--wide { grid-template-columns: 13rem 1fr; } .defs--wide dt { margin-top: 0; } }
.tick-list { list-style: none; padding: 0; }
.tick-list li { padding-left: 1.5rem; position: relative; }
.tick-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: .72rem; height: 2px; background: var(--copper); }
.not-list li::before { background: var(--bad); }

/* ---------- process / architecture ---------- */
.stages { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; counter-reset: stage; max-width: none; }
@media (min-width: 760px) { .stages { grid-template-columns: repeat(5, 1fr); gap: 0; } }
.stage { counter-increment: stage; position: relative; padding: 1.2rem 1.1rem 1.3rem; background: var(--white); border: 1px solid var(--border); margin: 0; }
@media (min-width: 760px) { .stage + .stage { border-left: 0; } .stage:first-child { border-radius: var(--radius) 0 0 var(--radius); } .stage:last-child { border-radius: 0 var(--radius) var(--radius) 0; } }
.stage::before { content: counter(stage); font: 600 1.7rem/1 var(--serif); color: var(--copper); display: block; margin-bottom: .6rem; }
.stage h3 { font-size: 1.2rem; margin-bottom: .3rem; }
.stage p { font-size: .92rem; margin: 0; }
.progression { list-style: none; padding: 0; margin: 0; display: grid; gap: clamp(1rem, 2vw, 1.4rem); max-width: none; counter-reset: pstep; }
.progression-item { counter-increment: pstep; margin: 0; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.progression-item img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--ivory); }
.progression-item div { padding: .9rem 1.1rem 1.2rem; }
.progression-item h3 { font-size: 1.12rem; margin-bottom: .25rem; }
.progression-item h3::before { content: counter(pstep) ". "; color: var(--copper-deep); }
.progression-item p { font-size: .92rem; margin: 0; }
@media (min-width: 640px) { .progression { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .progression { grid-template-columns: repeat(3, 1fr); } }

/* ---------- roadmap ---------- */
.roadmap { list-style: none; padding: 0; margin: 0; max-width: 54rem; border-left: 2px solid var(--stone-deep); counter-reset: rm; }
.roadmap li { position: relative; padding: 0 0 1.5rem 1.7rem; margin: 0; counter-increment: rm; }
.roadmap li::before { content: ""; position: absolute; left: -7px; top: .35rem; width: 12px; height: 12px; border-radius: 50%; background: var(--ivory); border: 2px solid var(--stone-deep); }
.roadmap li.is-now::before { background: var(--copper); border-color: var(--copper); }
.roadmap h3 { font-size: 1.15rem; display: flex; flex-wrap: wrap; gap: .3rem .8rem; align-items: center; margin-bottom: .25rem; }
.roadmap p { margin: 0; font-size: .95rem; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--white); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--stone); color: var(--navy); font-weight: 650; }
tr:last-child td { border-bottom: 0; }

/* ---------- stone gallery / explorer ---------- */
.stone-picker { display: flex; flex-wrap: wrap; gap: .6rem; margin: 0 0 1.2rem; padding: 0; list-style: none; max-width: none; }
.stone-picker li { margin: 0; }
.stone-picker button { display: flex; align-items: center; gap: .55rem; background: var(--white); border: 1.5px solid var(--border); border-radius: var(--radius); padding: .4rem .75rem .4rem .45rem; cursor: pointer; font: 560 .9rem var(--sans); color: var(--navy); }
.stone-picker button[aria-pressed="true"] { border-color: var(--navy); box-shadow: inset 0 -3px 0 var(--copper); }
.stone-picker img { width: 2.7rem; height: 2rem; object-fit: contain; }
.explorer-grid { display: grid; gap: 1rem; }
@media (min-width: 700px) { .explorer-grid { grid-template-columns: 1fr 1fr; } }
.explorer-grid figure { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: .6rem .6rem 1rem; }
.explorer-grid figcaption { padding: 0 .5rem; }

/* ---------- demo (VIVO + prastara) ---------- */
.demo { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); }
.demo-banner { background: var(--navy); color: var(--ivory); padding: .75rem 1.1rem; font-weight: 620; font-size: .95rem; border-radius: var(--radius) var(--radius) 0 0; }
.demo-body { display: grid; gap: 1.6rem; padding: clamp(1rem, 2.5vw, 1.6rem); }
@media (min-width: 1000px) { .demo-body { grid-template-columns: minmax(18rem, 22rem) 1fr; } }
.field { margin-bottom: .95rem; }
.field label, .field legend { display: block; font-weight: 620; color: var(--navy); font-size: .92rem; margin-bottom: .25rem; padding: 0; }
.field .hint { font-size: .8rem; color: var(--slate); margin: .2rem 0 0; }
.pair { display: grid; grid-template-columns: 1fr 6.2rem; gap: .7rem; align-items: center; }
input[type="range"] { width: 100%; accent-color: var(--copper-deep); height: 2rem; }
input[type="number"], input[type="text"], input[type="email"], input[type="tel"], select, textarea { width: 100%; font: 400 1rem var(--sans); color: var(--navy); background: var(--white); border: 1.5px solid #AEB9BD; border-radius: var(--radius); padding: .6rem .7rem; min-height: 2.8rem; }
textarea { min-height: 9rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--copper); outline-offset: 1px; border-color: var(--navy); }
.unit { font-size: .8rem; color: var(--slate); }
.preset-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.1rem; }
.preset-row button { background: var(--stone); border: 1px solid var(--stone-deep); border-radius: 99px; padding: .4rem .85rem; font: 580 .85rem var(--sans); color: var(--navy); cursor: pointer; min-height: 2.4rem; }
.preset-row button:hover { background: var(--stone-deep); }
.verdict { border-radius: var(--radius); padding: .9rem 1.1rem; margin-bottom: 1rem; border-left: 5px solid; font-weight: 600; color: var(--navy); }
.verdict--ok { background: #E3F0E8; border-color: var(--ok); }
.verdict--no { background: #F7E4E2; border-color: var(--bad); }
.verdict--warn { background: #FBF4E4; border-color: var(--warn); }
.verdict small { display: block; font-weight: 450; color: var(--slate); margin-top: .2rem; font-size: .88rem; }
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: .7rem; margin: 0 0 1rem; }
.metric { border: 1px solid var(--border); border-radius: var(--radius); padding: .6rem .75rem; background: var(--ivory); margin: 0; }
.metric dt { font-size: .78rem; color: var(--slate); margin: 0; }
.metric dd { margin: .1rem 0 0; font: 600 1.25rem/1.2 var(--serif); color: var(--navy); }
.metric.is-bad dd { color: var(--bad); }
.metric.is-ok dd { color: var(--ok); }
.metric small { font: 400 .75rem var(--sans); color: var(--slate); display: block; }
.viz { display: grid; gap: .8rem; margin-bottom: 1rem; }
@media (min-width: 560px) { .viz { grid-template-columns: 1fr 1fr; } }
.viz figure { border: 1px solid var(--border); border-radius: var(--radius); padding: .4rem; background: var(--ivory); }
.viz svg { width: 100%; height: auto; display: block; }
.viz figcaption { font-size: .78rem; margin: .2rem .3rem .2rem; }
.reasons, .alts { margin: 0 0 1rem; padding-left: 1.2rem; }
.demo details { border-top: 1px solid var(--border); padding-top: .8rem; margin-top: .8rem; }
.demo summary { cursor: pointer; font-weight: 620; color: var(--navy); }
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border); }
.tabs [role="tab"] { background: transparent; border: 0; border-bottom: 3px solid transparent; padding: .6rem .9rem; font: 600 .95rem var(--sans); color: var(--slate); cursor: pointer; margin-bottom: -1px; }
.tabs [role="tab"][aria-selected="true"] { color: var(--navy); border-bottom-color: var(--copper); }
.patterns { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--cell, 7.2rem), 1fr)); gap: .45rem; list-style: none; padding: 0; margin: 0 0 1rem; max-width: none; }
.patterns li { margin: 0; display: flex; align-items: center; gap: .55rem; border: 1px solid var(--border); background: var(--ivory); padding: .35rem .5rem; border-radius: var(--radius); font: 500 .75rem var(--mono); color: var(--slate); min-height: 2rem; }
.patterns li.is-hit { background: #F4E6DA; border-color: var(--copper); }
.syl { display: inline-flex; align-items: center; gap: .22rem; }
.syl i { display: inline-block; background: var(--navy); }
.syl i.l { width: .5rem; height: .5rem; border-radius: 50%; }
.syl i.g { width: 1.05rem; height: .26rem; border-radius: 2px; }
.syl-letters { letter-spacing: .12em; font-weight: 600; color: var(--navy); }
.meru { text-align: center; overflow-x: auto; padding-bottom: .4rem; }
.meru-row { display: flex; justify-content: center; gap: .35rem; margin-bottom: .35rem; }
.meru-cell { min-width: 2.6rem; padding: .35rem .3rem; border: 1px solid var(--border); background: var(--ivory); border-radius: var(--radius); font: 600 .9rem var(--serif); color: var(--navy); cursor: pointer; }
.meru-cell:hover { border-color: var(--navy); }
.meru-cell[aria-pressed="true"] { background: #F4E6DA; border-color: var(--copper); }
.bar-list { list-style: none; padding: 0; margin: 0; max-width: none; }
.bar-list li { display: grid; grid-template-columns: 5rem 1fr 3.4rem; gap: .6rem; align-items: center; margin-bottom: .3rem; font-size: .88rem; }
.bar-list .bar { height: .8rem; background: var(--stone); border-radius: 2px; overflow: hidden; }
.bar-list .bar span { display: block; height: 100%; background: var(--copper); }

/* ---------- forms ---------- */
.form-grid { display: grid; gap: 0 1.2rem; }
@media (min-width: 700px) { .form-grid--2 { grid-template-columns: 1fr 1fr; } .form-grid .full { grid-column: 1 / -1; } }
.req { color: var(--bad); }
.field-error { color: var(--bad); font-size: .85rem; margin: .25rem 0 0; min-height: 0; }
input[aria-invalid="true"], select[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--bad); }
.check { display: flex; gap: .7rem; align-items: flex-start; }
.check input { margin-top: .35rem; width: 1.15rem; height: 1.15rem; accent-color: var(--navy); flex: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { margin-top: 1rem; padding: .9rem 1.1rem; border-radius: var(--radius); border-left: 5px solid; display: none; max-width: 62ch; }
.form-status.is-visible { display: block; }
.form-status--ok { background: #E3F0E8; border-color: var(--ok); color: var(--navy); }
.form-status--err { background: #F7E4E2; border-color: var(--bad); color: var(--navy); }
.form-status--info { background: #FBF4E4; border-color: var(--warn); color: var(--navy); }

/* ---------- placeholders awaiting verified details ---------- */
.todo { display: inline; background: repeating-linear-gradient(135deg, #FBF4E4, #FBF4E4 6px, #F6EBD2 6px, #F6EBD2 12px); border: 1px dashed var(--warn); color: #5E3E0A; padding: .05rem .4rem; border-radius: 2px; font-size: .92em; }

/* ---------- publications ---------- */
.pub-tools { display: grid; gap: .8rem 1rem; margin-bottom: 1.4rem; }
@media (min-width: 760px) { .pub-tools { grid-template-columns: 2fr 1fr 1fr; } }
.pub-list { list-style: none; padding: 0; margin: 0; max-width: none; display: grid; gap: 1rem; }
.pub-item { margin: 0; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.3rem; }
.pub-item h3 { margin-bottom: .3rem; }
.pub-item h3 a { text-decoration: none; }
.pub-item h3 a:hover { text-decoration: underline; }
.pub-meta { display: flex; flex-wrap: wrap; gap: .4rem .7rem; align-items: center; font-size: .88rem; margin-bottom: .5rem; }
.empty-state { background: var(--white); border: 1px dashed #AEB9BD; border-radius: var(--radius); padding: 1.6rem; max-width: 46rem; }
.article { max-width: 46rem; }
.article h2 { margin-top: 2.2rem; font-size: 1.6rem; }
.article-meta { margin: 0 0 2rem; padding: 1rem 1.2rem; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); max-width: none; }
.article .abstract { border-left: 4px solid var(--copper); padding-left: 1.1rem; }
.article table { font-size: .9rem; }
.article pre { overflow-x: auto; background: var(--navy-dark); color: #E7ECEE; padding: 1rem; border-radius: var(--radius); font-size: .85rem; }
.refs { padding-left: 1.4rem; }
.cite-box { background: var(--stone); border-radius: var(--radius); padding: .9rem 1.1rem; font-size: .9rem; overflow-x: auto; white-space: pre-wrap; max-width: none; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-dark); color: #B9C5CB; padding-block: 3.2rem 2rem; font-size: .93rem; }
.site-footer a { color: #E6D6C8; }
.site-footer h2 { font: 650 .95rem var(--sans); color: var(--ivory); margin-bottom: .7rem; letter-spacing: 0; }
.footer-grid { display: grid; gap: 2rem; margin-bottom: 2rem; }
@media (min-width: 800px) { .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; } }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: .45rem; }
.footer-brand { display: flex; align-items: center; gap: .7rem; font: 600 1.2rem var(--serif); color: var(--ivory); margin-bottom: .8rem; }
.footer-brand img { width: 2.2rem; height: 2.2rem; }
.footer-note { border-top: 1px solid #25394A; padding-top: 1.2rem; display: grid; gap: .5rem; font-size: .85rem; }
.footer-note p { margin: 0; max-width: 80ch; }

/* ---------- page header (inner pages) ---------- */
.page-head { padding-block: clamp(2.4rem, 6vw, 4.2rem) clamp(1.8rem, 4vw, 2.8rem); border-bottom: 1px solid var(--border); }
.page-head h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); max-width: 20ch; }
.breadcrumb { font-size: .85rem; margin-bottom: 1rem; }
.breadcrumb ol { list-style: none; display: flex; gap: .4rem; padding: 0; margin: 0; flex-wrap: wrap; max-width: none; }
.breadcrumb li { margin: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: .4rem; color: #8A979D; }

@media print { .site-header, .site-nav, .stage-strip, .site-footer, .btn-row { display: none !important; } body { background: #fff; } }

/* ---------- demo layout additions ---------- */
.hero h1 { max-width: 20ch; font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
.demo-controls { min-width: 0; }
.demo-results { min-width: 0; }
.demo-live { position: sticky; top: 4.5rem; z-index: 4; font: 650 .9rem var(--sans); padding: .55rem .8rem; margin-bottom: .9rem; border-radius: var(--radius); border-left: 5px solid var(--ok); background: #E3F0E8; color: var(--navy); }
.demo-live.is-bad { border-color: var(--bad); background: #F7E4E2; }
@media (min-width: 1000px) { .demo-live { display: none; } .demo-controls { position: sticky; top: 5.5rem; align-self: start; max-height: calc(100vh - 6.5rem); overflow-y: auto; padding-right: .4rem; } }
a.panel:hover { border-color: var(--navy); }
a.panel:focus-visible { outline-offset: 2px; }
.pub-tools .field { margin: 0; }